Los Angeles (Central City E) CA, US: 34.066429, -118.226755
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| July 25, 2021, 6 a.m. | 5.5 ppb (6) | 0.2 ppb (1) | 4.2 ppb (4) | 5.0 ppb (5) | 4.2 ppb (4) | 0.0 ppb (0) | 32.0 ppb (30) | 0.2 ppb (3) | 29.0 μg/m3 (27) | 20.0 μg/m3 (68) | 68.0 | |
| July 25, 2021, 5 a.m. | 5.3 ppb (5) | 0.2 ppb (1) | 4.1 ppb (4) | 5.0 ppb (5) | 4.1 ppb (4) | 0.0 ppb (0) | 33.0 ppb (31) | 0.21 ppb (3) | 24.0 μg/m3 (23) | 17.0 μg/m3 (62) | 62.0 | |
| July 25, 2021, 4 a.m. | 5.3 ppb (5) | 0.2 ppb (1) | 4.0 ppb (4) | 5.0 ppb (5) | 3.9 ppb (4) | 0.0 ppb (0) | 33.0 ppb (31) | 0.24 ppb (3) | 28.0 μg/m3 (26) | 13.0 μg/m3 (53) | 53.0 | |
| July 25, 2021, 3 a.m. | 5.9 ppb (6) | 0.2 ppb (1) | 4.7 ppb (5) | 6.0 ppb (6) | 4.6 ppb (5) | 0.0 ppb (0) | 34.0 ppb (32) | 0.21 ppb (3) | 29.0 μg/m3 (27) | 24.0 μg/m3 (77) | 77.0 | |
| July 25, 2021, 2 a.m. | 6.7 ppb (7) | 0.3 ppb (1) | 5.4 ppb (6) | 6.0 ppb (6) | 5.2 ppb (5) | 1.0 ppb (2) | 37.0 ppb (35) | 0.21 ppb (3) | 28.0 μg/m3 (26) | 18.0 μg/m3 (64) | 64.0 | |
| July 25, 2021, 1 a.m. | 6.0 ppb (6) | 0.7 ppb (1) | 5.3 ppb (5) | 5.0 ppb (5) | 4.7 ppb (5) | 1.0 ppb (2) | 41.0 ppb (38) | 0.2 ppb (3) | 30.0 μg/m3 (28) | 18.0 μg/m3 (64) | 64.0 | |
| July 25, 2021, midnight | 6.2 ppb (6) | 0.5 ppb (1) | 5.7 ppb (6) | 6.0 ppb (6) | 5.2 ppb (5) | 1.0 ppb (2) | 45.0 ppb (42) | 0.21 ppb (3) | 30.0 μg/m3 (28) | 23.0 μg/m3 (74) | 74.0 | |
| July 24, 2021, 11 p.m. | 7.0 ppb (7) | 0.9 ppb (1) | 7.0 ppb (7) | 6.0 ppb (6) | 6.1 ppb (6) | 1.0 ppb (2) | 49.0 ppb (46) | 0.22 ppb (3) | 38.0 μg/m3 (36) | 21.0 μg/m3 (70) | 70.0 | |
| July 24, 2021, 10 p.m. | 7.3 ppb (7) | 0.9 ppb (1) | 7.2 ppb (7) | 6.0 ppb (6) | 6.2 ppb (6) | 1.0 ppb (2) | 49.0 ppb (46) | 0.2 ppb (3) | 34.0 μg/m3 (32) | 21.0 μg/m3 (70) | 70.0 | |
| July 24, 2021, 9 p.m. | 9.6 ppb (10) | 1.2 ppb (2) | 10.0 ppb (10) | 8.0 ppb (8) | 8.9 ppb (9) | 1.0 ppb (2) | 55.0 ppb (51) | 0.25 ppb (3) | 41.0 μg/m3 (38) | 24.0 μg/m3 (77) | 77.0 | |
| July 24, 2021, 8 p.m. | 9.8 ppb (10) | 1.3 ppb (2) | 10.6 ppb (10) | 9.0 ppb (9) | 9.2 ppb (9) | 1.0 ppb (2) | 55.0 ppb (51) | 0.27 ppb (4) | 45.0 μg/m3 (42) | 27.0 μg/m3 (83) | 83.0 | |
| July 24, 2021, 7 p.m. | 11.3 ppb (11) | 1.4 ppb (2) | 11.8 ppb (12) | 10.0 ppb (10) | 10.3 ppb (10) | 1.0 ppb (2) | 53.0 ppb (50) | 0.29 ppb (4) | 45.0 μg/m3 (42) | 28.0 μg/m3 (85) | 85.0 | |
| July 24, 2021, 6 p.m. | 13.5 ppb (13) | 2.2 ppb (3) | 14.0 ppb (14) | 11.0 ppb (11) | 11.8 ppb (12) | 1.0 ppb (2) | 46.0 ppb (43) | 0.3 ppb (4) | 51.0 μg/m3 (48) | 30.0 μg/m3 (89) | 89.0 | |
| July 24, 2021, 5 p.m. | 17.8 ppb (17) | 4.3 ppb (5) | 18.3 ppb (18) | 14.0 ppb (14) | 14.0 ppb (14) | 1.0 ppb (2) | 34.0 ppb (32) | 0.32 ppb (4) | 49.0 μg/m3 (46) | 26.0 μg/m3 (81) | 81.0 | |
| July 24, 2021, 4 p.m. | 20.8 ppb (20) | 6.1 ppb (6) | 21.2 ppb (20) | 15.0 ppb (15) | 15.1 ppb (15) | 1.0 ppb (2) | 23.0 ppb (22) | 0.33 ppb (4) | 57.0 μg/m3 (52) | 28.0 μg/m3 (85) | 85.0 | |
| July 24, 2021, 3 p.m. | 22.2 ppb (21) | 6.2 ppb (6) | 21.8 ppb (21) | 16.0 ppb (16) | 15.8 ppb (15) | 1.0 ppb (2) | 16.0 ppb (15) | 0.33 ppb (4) | 48.0 μg/m3 (45) | 28.0 μg/m3 (85) | 85.0 | |
| July 24, 2021, 2 p.m. | 25.9 ppb (25) | 6.2 ppb (6) | 23.8 ppb (23) | 20.0 ppb (19) | 18.5 ppb (18) | 1.0 ppb (2) | 11.0 ppb (11) | 0.36 ppb (5) | 51.0 μg/m3 (48) | 32.0 μg/m3 (93) | 93.0 | |
| July 24, 2021, 1 p.m. | 20.1 ppb (19) | 1.7 ppb (2) | 19.5 ppb (19) | 18.0 ppb (17) | 16.7 ppb (16) | 0.0 ppb (0) | 10.0 ppb (10) | 0.34 ppb (4) | 51.0 μg/m3 (48) | 28.0 μg/m3 (85) | 85.0 | |
| July 24, 2021, noon | 21.6 ppb (21) | 2.4 ppb (3) | 19.6 ppb (19) | 19.0 ppb (18) | 17.9 ppb (17) | 0.0 ppb (0) | 7.0 ppb (7) | 0.37 ppb (5) | 39.0 μg/m3 (37) | 27.0 μg/m3 (83) | 83.0 | |
| July 24, 2021, 11 a.m. | 13.6 ppb (13) | 0.6 ppb (1) | 12.4 ppb (12) | 13.0 ppb (13) | 11.7 ppb (12) | 0.0 ppb (0) | 15.0 ppb (14) | 0.3 ppb (4) | 41.0 μg/m3 (38) | 25.0 μg/m3 (79) | 79.0 | |
| July 24, 2021, 10 a.m. | 14.9 ppb (15) | 0.5 ppb (1) | 13.6 ppb (13) | 14.0 ppb (14) | 13.5 ppb (13) | 1.0 ppb (2) | 16.0 ppb (15) | 0.26 ppb (4) | 42.0 μg/m3 (39) | 23.0 μg/m3 (74) | 74.0 | |
| July 24, 2021, 9 a.m. | 12.2 ppb (12) | 0.3 ppb (1) | 10.3 ppb (10) | 12.0 ppb (12) | 10.2 ppb (10) | 0.0 ppb (0) | 20.0 ppb (19) | 0.27 ppb (4) | 39.0 μg/m3 (37) | 23.0 μg/m3 (74) | 74.0 | |
| July 24, 2021, 8 a.m. | 10.1 ppb (10) | 0.3 ppb (1) | 9.0 ppb (9) | 10.0 ppb (10) | 8.9 ppb (9) | 1.0 ppb (2) | 23.0 ppb (22) | 0.24 ppb (3) | 36.0 μg/m3 (34) | 21.0 μg/m3 (70) | 70.0 | |
| July 24, 2021, 7 a.m. | 8.9 ppb (9) | 0.2 ppb (1) | 7.6 ppb (8) | 9.0 ppb (9) | 7.5 ppb (8) | 0.0 ppb (0) | 25.0 ppb (24) | 0.28 ppb (4) | 28.0 μg/m3 (26) | 18.0 μg/m3 (64) | 64.0 | |
| July 24, 2021, 6 a.m. | 8.3 ppb (8) | 0.3 ppb (1) | 6.8 ppb (7) | 8.0 ppb (8) | 6.7 ppb (7) | 1.0 ppb (2) | 26.0 ppb (25) | 0.24 ppb (3) | 26.0 μg/m3 (25) | 21.0 μg/m3 (70) | 70.0 | |
| July 24, 2021, 5 a.m. | 7.4 ppb (7) | 0.2 ppb (1) | 6.1 ppb (6) | 7.0 ppb (7) | 6.1 ppb (6) | 0.0 ppb (0) | 28.0 ppb (26) | 0.24 ppb (3) | 28.0 μg/m3 (26) | 16.0 μg/m3 (60) | 60.0 | |
| July 24, 2021, 4 a.m. | 6.6 ppb (7) | 0.2 ppb (1) | 5.5 ppb (6) | 6.0 ppb (6) | 5.4 ppb (6) | 0.0 ppb (0) | 31.0 ppb (29) | 0.26 ppb (4) | 23.0 μg/m3 (22) | 18.0 μg/m3 (64) | 64.0 | |
| July 24, 2021, 3 a.m. | 5.7 ppb (6) | 0.2 ppb (1) | 4.7 ppb (5) | 6.0 ppb (6) | 4.6 ppb (5) | 0.0 ppb (0) | 34.0 ppb (32) | 0.2 ppb (3) | 26.0 μg/m3 (25) | 25.0 μg/m3 (79) | 79.0 | |
| July 24, 2021, 2 a.m. | 6.3 ppb (6) | 0.4 ppb (1) | 5.2 ppb (5) | 6.0 ppb (6) | 4.9 ppb (5) | 0.0 ppb (0) | 36.0 ppb (34) | 0.21 ppb (3) | 35.0 μg/m3 (33) | 22.0 μg/m3 (72) | 72.0 | |
| July 24, 2021, 1 a.m. | 7.0 ppb (7) | 0.8 ppb (1) | 6.0 ppb (6) | 6.0 ppb (6) | 5.3 ppb (5) | 1.0 ppb (2) | 40.0 ppb (38) | 0.22 ppb (3) | 37.0 μg/m3 (35) | 25.0 μg/m3 (79) | 79.0 | |
| July 24, 2021, midnight | 9.5 ppb (9) | 1.3 ppb (2) | 9.1 ppb (9) | 8.0 ppb (8) | 7.6 ppb (8) | 1.0 ppb (2) | 46.0 ppb (43) | 0.23 ppb (3) | 38.0 μg/m3 (36) | 20.0 μg/m3 (68) | 68.0 | |
| July 23, 2021, 11 p.m. | 7.0 ppb (7) | 0.8 ppb (1) | 7.0 ppb (7) | 6.0 ppb (6) | 6.1 ppb (6) | 1.0 ppb (2) | 54.0 ppb (50) | 0.24 ppb (3) | 47.0 μg/m3 (44) | 22.0 μg/m3 (72) | 72.0 | |
| July 23, 2021, 10 p.m. | 8.0 ppb (8) | 1.1 ppb (2) | 8.3 ppb (8) | 7.0 ppb (7) | 7.2 ppb (7) | 1.0 ppb (2) | 55.0 ppb (51) | 0.23 ppb (3) | 47.0 μg/m3 (44) | 27.0 μg/m3 (83) | 83.0 | |
| July 23, 2021, 9 p.m. | 10.3 ppb (10) | 1.5 ppb (2) | 10.5 ppb (10) | 9.0 ppb (9) | 9.1 ppb (9) | 1.0 ppb (2) | 53.0 ppb (50) | 0.27 ppb (4) | 52.0 μg/m3 (49) | 31.0 μg/m3 (91) | 91.0 | |
| July 23, 2021, 8 p.m. | 19.0 ppb (18) | 3.8 ppb (4) | 18.7 ppb (18) | 15.0 ppb (15) | 15.0 ppb (15) | 1.0 ppb (2) | 45.0 ppb (42) | 0.3 ppb (4) | 62.0 μg/m3 (55) | 32.0 μg/m3 (93) | 93.0 | |
| July 23, 2021, 7 p.m. | 24.5 ppb (24) | 6.0 ppb (6) | 24.4 ppb (24) | 19.0 ppb (18) | 18.3 ppb (18) | 2.0 ppb (3) | 37.0 ppb (35) | 0.32 ppb (4) | 59.0 μg/m3 (53) | 30.0 μg/m3 (89) | 89.0 | |
| July 23, 2021, 6 p.m. | 28.7 ppb (28) | 8.8 ppb (9) | 28.4 ppb (27) | 20.0 ppb (19) | 16.8 ppb (16) | 1.0 ppb (2) | 32.0 ppb (30) | 0.34 ppb (4) | 55.0 μg/m3 (51) | 29.0 μg/m3 (87) | 87.0 | |
| July 23, 2021, 5 p.m. | 27.0 ppb (26) | 9.1 ppb (9) | 26.4 ppb (25) | 18.0 ppb (17) | 17.4 ppb (17) | 1.0 ppb (2) | 23.0 ppb (22) | 0.36 ppb (5) | 53.0 μg/m3 (50) | 28.0 μg/m3 (85) | 85.0 | |
| July 23, 2021, 4 p.m. | 24.1 ppb (23) | 8.8 ppb (9) | 23.3 ppb (22) | 15.0 ppb (15) | 14.3 ppb (14) | 1.0 ppb (2) | 20.0 ppb (19) | 0.34 ppb (4) | 41.0 μg/m3 (38) | 26.0 μg/m3 (81) | 81.0 | |
| July 23, 2021, 3 p.m. | 26.6 ppb (26) | 10.5 ppb (10) | 24.4 ppb (24) | 16.0 ppb (16) | 14.4 ppb (14) | 1.0 ppb (2) | 14.0 ppb (13) | 0.35 ppb (4) | 54.0 μg/m3 (50) | 27.0 μg/m3 (83) | 83.0 | |
| July 23, 2021, 2 p.m. | 27.3 ppb (26) | 9.4 ppb (9) | 24.2 ppb (23) | 18.0 ppb (17) | 14.8 ppb (14) | 1.0 ppb (2) | 10.0 ppb (10) | 0.3 ppb (4) | 40.0 μg/m3 (38) | 25.0 μg/m3 (79) | 79.0 | |
| July 23, 2021, 1 p.m. | 22.0 ppb (21) | 3.7 ppb (4) | 17.2 ppb (17) | 18.0 ppb (17) | 13.1 ppb (13) | 1.0 ppb (2) | 9.0 ppb (9) | 0.26 ppb (4) | 34.0 μg/m3 (32) | 23.0 μg/m3 (74) | 74.0 | |
| July 23, 2021, noon | 18.9 ppb (18) | 1.3 ppb (2) | 15.3 ppb (15) | 18.0 ppb (17) | 14.4 ppb (14) | 1.0 ppb (2) | 8.0 ppb (8) | 0.26 ppb (4) | 31.0 μg/m3 (29) | 25.0 μg/m3 (79) | 79.0 | |
| July 23, 2021, 11 a.m. | 16.5 ppb (16) | 0.7 ppb (1) | 14.2 ppb (14) | 16.0 ppb (16) | 13.0 ppb (13) | 1.0 ppb (2) | 10.0 ppb (10) | 0.24 ppb (3) | 34.0 μg/m3 (32) | 20.0 μg/m3 (68) | 68.0 | |
| July 23, 2021, 10 a.m. | 16.7 ppb (16) | 0.4 ppb (1) | 14.8 ppb (14) | 16.0 ppb (16) | 14.7 ppb (14) | 1.0 ppb (2) | 10.0 ppb (10) | 0.22 ppb (3) | 36.0 μg/m3 (34) | 19.0 μg/m3 (66) | 66.0 | |
| July 23, 2021, 9 a.m. | 18.2 ppb (18) | 1.0 ppb (1) | 16.9 ppb (16) | 17.0 ppb (17) | 15.2 ppb (15) | 1.0 ppb (2) | 8.0 ppb (8) | 0.3 ppb (4) | 37.0 μg/m3 (35) | 24.0 μg/m3 (77) | 77.0 | |
| July 23, 2021, 8 a.m. | 21.6 ppb (21) | 0.7 ppb (1) | 19.5 ppb (19) | 21.0 ppb (20) | 19.3 ppb (19) | 1.0 ppb (2) | 7.0 ppb (7) | 0.24 ppb (3) | 36.0 μg/m3 (34) | 17.0 μg/m3 (62) | 62.0 | |
| July 23, 2021, 7 a.m. | 15.5 ppb (15) | 1.5 ppb (2) | 15.0 ppb (15) | 14.0 ppb (14) | 13.7 ppb (13) | 1.0 ppb (2) | 12.0 ppb (12) | 0.25 ppb (3) | 35.0 μg/m3 (33) | 17.0 μg/m3 (62) | 62.0 | |
| July 23, 2021, 6 a.m. | 14.1 ppb (14) | 0.5 ppb (1) | 12.0 ppb (12) | 14.0 ppb (14) | 11.7 ppb (12) | 1.0 ppb (2) | 13.0 ppb (13) | 0.21 ppb (3) | 32.0 μg/m3 (30) | 17.0 μg/m3 (62) | 62.0 | |
| July 23, 2021, 5 a.m. | 12.1 ppb (12) | 0.3 ppb (1) | 11.1 ppb (11) | 12.0 ppb (12) | 10.9 ppb (11) | 1.0 ppb (2) | 16.0 ppb (15) | 0.21 ppb (3) | 30.0 μg/m3 (28) | 23.0 μg/m3 (74) | 74.0 | |
| July 23, 2021, 4 a.m. | 14.2 ppb (14) | 0.7 ppb (1) | 12.8 ppb (13) | 14.0 ppb (14) | 12.2 ppb (12) | 1.0 ppb (2) | 16.0 ppb (15) | 0.25 ppb (3) | 29.0 μg/m3 (27) | 13.0 μg/m3 (53) | 53.0 | |
| July 23, 2021, 3 a.m. | 13.5 ppb (13) | 0.3 ppb (1) | 12.3 ppb (12) | 13.0 ppb (13) | 12.2 ppb (12) | 1.0 ppb (2) | 24.0 ppb (23) | 0.25 ppb (3) | 39.0 μg/m3 (37) | 26.0 μg/m3 (81) | 81.0 | |
| July 23, 2021, 2 a.m. | 14.7 ppb (14) | 0.8 ppb (1) | 13.3 ppb (13) | 14.0 ppb (14) | 12.5 ppb (12) | 1.0 ppb (2) | 23.0 ppb (22) | 0.25 ppb (3) | 39.0 μg/m3 (37) | 29.0 μg/m3 (87) | 87.0 | |
| July 23, 2021, 1 a.m. | 14.0 ppb (14) | 2.1 ppb (2) | 12.9 ppb (13) | 12.0 ppb (12) | 10.8 ppb (11) | 1.0 ppb (2) | 29.0 ppb (27) | 0.25 ppb (3) | 43.0 μg/m3 (40) | 23.0 μg/m3 (74) | 74.0 | |
| July 23, 2021, midnight | 14.6 ppb (14) | 2.9 ppb (3) | 13.7 ppb (13) | 12.0 ppb (12) | 10.7 ppb (11) | 1.0 ppb (2) | 33.0 ppb (31) | 0.24 ppb (3) | 38.0 μg/m3 (36) | 28.0 μg/m3 (85) | 85.0 | |
| July 22, 2021, 11 p.m. | 11.3 ppb (11) | 2.2 ppb (3) | 10.6 ppb (10) | 9.0 ppb (9) | 8.3 ppb (8) | 1.0 ppb (2) | 40.0 ppb (38) | 0.23 ppb (3) | 35.0 μg/m3 (33) | 26.0 μg/m3 (81) | 81.0 | |
| July 22, 2021, 10 p.m. | 14.1 ppb (14) | 2.7 ppb (3) | 13.5 ppb (13) | 11.0 ppb (11) | 10.8 ppb (11) | 1.0 ppb (2) | 41.0 ppb (38) | 0.22 ppb (3) | 41.0 μg/m3 (38) | 23.0 μg/m3 (74) | 74.0 | |
| July 22, 2021, 9 p.m. | 13.4 ppb (13) | 2.8 ppb (3) | 12.9 ppb (13) | 11.0 ppb (11) | 10.1 ppb (10) | 2.0 ppb (3) | 42.0 ppb (39) | 0.23 ppb (3) | 45.0 μg/m3 (42) | 28.0 μg/m3 (85) | 85.0 | |
| July 22, 2021, 8 p.m. | 10.6 ppb (10) | 1.8 ppb (2) | 10.5 ppb (10) | 9.0 ppb (9) | 8.6 ppb (9) | 1.0 ppb (2) | 49.0 ppb (46) | 0.21 ppb (3) | 38.0 μg/m3 (36) | 21.0 μg/m3 (70) | 70.0 | |
| July 22, 2021, 7 p.m. | 13.0 ppb (13) | 2.6 ppb (3) | 12.7 ppb (12) | 11.0 ppb (11) | 10.0 ppb (10) | 1.0 ppb (2) | 44.0 ppb (41) | 0.23 ppb (3) | 43.0 μg/m3 (40) | 18.0 μg/m3 (64) | 64.0 | |
| July 22, 2021, 6 p.m. | 15.2 ppb (15) | 3.9 ppb (4) | 13.8 ppb (14) | 11.0 ppb (11) | 10.3 ppb (10) | 1.0 ppb (2) | 37.0 ppb (35) | 0.25 ppb (3) | 45.0 μg/m3 (42) | 22.0 μg/m3 (72) | 72.0 | |
| July 22, 2021, 5 p.m. | 20.7 ppb (20) | 6.6 ppb (7) | 19.0 ppb (18) | 14.0 ppb (14) | 13.0 ppb (13) | 1.0 ppb (2) | 28.0 ppb (26) | 0.28 ppb (4) | 47.0 μg/m3 (44) | 26.0 μg/m3 (81) | 81.0 | |
| July 22, 2021, 4 p.m. | 25.0 ppb (24) | 9.1 ppb (9) | 23.0 ppb (22) | 16.0 ppb (16) | 14.5 ppb (14) | 1.0 ppb (2) | 20.0 ppb (19) | 0.31 ppb (4) | 41.0 μg/m3 (38) | 27.0 μg/m3 (83) | 83.0 | |
| July 22, 2021, 3 p.m. | 37.6 ppb (36) | 16.0 ppb (16) | 35.4 ppb (34) | 22.0 ppb (21) | 20.1 ppb (19) | 1.0 ppb (2) | 13.0 ppb (13) | 0.38 ppb (5) | 51.0 μg/m3 (48) | 30.0 μg/m3 (89) | 89.0 | |
| July 22, 2021, 2 p.m. | 45.4 ppb (43) | 19.9 ppb (19) | 43.0 ppb (41) | 26.0 ppb (25) | 23.8 ppb (23) | 1.0 ppb (2) | 7.0 ppb (7) | 0.44 ppb (5) | 50.0 μg/m3 (47) | 26.0 μg/m3 (81) | 81.0 | |
| July 22, 2021, 1 p.m. | 35.0 ppb (34) | 8.1 ppb (8) | 35.4 ppb (34) | 27.0 ppb (26) | 25.8 ppb (25) | 1.0 ppb (2) | 5.0 ppb (5) | 0.41 ppb (5) | 36.0 μg/m3 (34) | 24.0 μg/m3 (77) | 77.0 | |
| July 22, 2021, noon | 26.9 ppb (26) | 1.6 ppb (2) | 23.3 ppb (22) | 25.0 ppb (24) | 22.5 ppb (22) | 1.0 ppb (2) | 6.0 ppb (6) | 0.29 ppb (4) | 35.0 μg/m3 (33) | 21.0 μg/m3 (70) | 70.0 | |
| July 22, 2021, 11 a.m. | 22.7 ppb (22) | 0.6 ppb (1) | 19.2 ppb (19) | 22.0 ppb (21) | 19.0 ppb (18) | 1.0 ppb (2) | 10.0 ppb (10) | 0.24 ppb (3) | 32.0 μg/m3 (30) | 24.0 μg/m3 (77) | 77.0 | |
| July 22, 2021, 10 a.m. | 26.1 ppb (25) | 1.7 ppb (2) | 20.3 ppb (20) | 24.0 ppb (23) | 19.1 ppb (19) | 1.0 ppb (2) | 8.0 ppb (8) | 0.22 ppb (3) | 29.0 μg/m3 (27) | 25.0 μg/m3 (79) | 79.0 | |
| July 22, 2021, 9 a.m. | 28.5 ppb (27) | 0.9 ppb (1) | 22.8 ppb (22) | 28.0 ppb (27) | 22.3 ppb (22) | 1.0 ppb (2) | 6.0 ppb (6) | 0.32 ppb (4) | 42.0 μg/m3 (39) | 25.0 μg/m3 (79) | 79.0 | |
| July 22, 2021, 8 a.m. | 34.9 ppb (33) | 1.3 ppb (2) | 32.6 ppb (31) | 34.0 ppb (33) | 31.9 ppb (31) | 1.0 ppb (2) | 5.0 ppb (5) | 0.37 ppb (5) | 33.0 μg/m3 (31) | 21.0 μg/m3 (70) | 70.0 | |
| July 22, 2021, 7 a.m. | 18.3 ppb (18) | 0.2 ppb (1) | 19.8 ppb (19) | 18.0 ppb (17) | 19.4 ppb (19) | 1.0 ppb (2) | 20.0 ppb (19) | 0.3 ppb (4) | 35.0 μg/m3 (33) | 22.0 μg/m3 (72) | 72.0 | |
| July 22, 2021, 6 a.m. | 20.1 ppb (19) | 0.8 ppb (1) | 18.3 ppb (18) | 19.0 ppb (18) | 17.8 ppb (17) | 1.0 ppb (2) | 21.0 ppb (20) | 0.32 ppb (4) | 35.0 μg/m3 (33) | 26.0 μg/m3 (81) | 81.0 | |
| July 22, 2021, 5 a.m. | 11.5 ppb (11) | 0.2 ppb (1) | 11.2 ppb (11) | 11.0 ppb (11) | 11.1 ppb (11) | 1.0 ppb (2) | 25.0 ppb (24) | 0.31 ppb (4) | 34.0 μg/m3 (32) | 26.0 μg/m3 (81) | 81.0 | |
| July 22, 2021, 4 a.m. | 10.6 ppb (10) | 0.2 ppb (1) | 9.0 ppb (9) | 10.0 ppb (10) | 9.0 ppb (9) | 1.0 ppb (2) | 31.0 ppb (29) | 0.29 ppb (4) | 32.0 μg/m3 (30) | 18.0 μg/m3 (64) | 64.0 | |
| July 22, 2021, 3 a.m. | 8.1 ppb (8) | 0.1 ppb (1) | 6.8 ppb (7) | 8.0 ppb (8) | 6.7 ppb (7) | 1.0 ppb (2) | 36.0 ppb (34) | 0.23 ppb (3) | 26.0 μg/m3 (25) | 20.0 μg/m3 (68) | 68.0 | |
| July 22, 2021, 2 a.m. | 6.5 ppb (7) | 0.3 ppb (1) | 5.2 ppb (5) | 6.0 ppb (6) | 4.9 ppb (5) | 1.0 ppb (2) | 38.0 ppb (36) | 0.19 ppb (3) | 21.0 μg/m3 (20) | 16.0 μg/m3 (60) | 60.0 | |
| July 22, 2021, 1 a.m. | 5.9 ppb (6) | 0.7 ppb (1) | 5.0 ppb (5) | 5.0 ppb (5) | 4.3 ppb (5) | 1.0 ppb (2) | 41.0 ppb (38) | 0.19 ppb (3) | 25.0 μg/m3 (24) | 17.0 μg/m3 (62) | 62.0 | |
| July 22, 2021, midnight | 6.2 ppb (6) | 0.9 ppb (1) | 5.4 ppb (6) | 5.0 ppb (5) | 4.5 ppb (5) | 1.0 ppb (2) | 43.0 ppb (40) | 0.2 ppb (3) | 28.0 μg/m3 (26) | 20.0 μg/m3 (68) | 68.0 | |
| July 21, 2021, 11 p.m. | 7.2 ppb (7) | 1.1 ppb (2) | 6.9 ppb (7) | 6.0 ppb (6) | 5.8 ppb (6) | 1.0 ppb (2) | 49.0 ppb (46) | 0.22 ppb (3) | 36.0 μg/m3 (34) | 23.0 μg/m3 (74) | 74.0 | |
| July 21, 2021, 10 p.m. | 9.1 ppb (9) | 1.4 ppb (2) | 9.0 ppb (9) | 8.0 ppb (8) | 7.6 ppb (8) | 1.0 ppb (2) | 52.0 ppb (49) | 0.23 ppb (3) | 47.0 μg/m3 (44) | 25.0 μg/m3 (79) | 79.0 | |
| July 21, 2021, 9 p.m. | 11.9 ppb (12) | 2.0 ppb (2) | 12.2 ppb (12) | 10.0 ppb (10) | 10.4 ppb (10) | 1.0 ppb (2) | 53.0 ppb (50) | 0.27 ppb (4) | 50.0 μg/m3 (47) | 24.0 μg/m3 (77) | 77.0 | |
| July 21, 2021, 8 p.m. | N/A | N/A | 15.8 ppb (15) | N/A | 13.4 ppb (13) | 1.0 ppb (2) | N/A | 0.33 ppb (4) | 49.0 μg/m3 (46) | 24.0 μg/m3 (77) | 77.0 | |
| July 21, 2021, 7 p.m. | 20.8 ppb (20) | 3.3 ppb (4) | 21.2 ppb (20) | 18.0 ppb (17) | 18.1 ppb (18) | 1.0 ppb (2) | N/A | 0.43 ppb (5) | 49.0 μg/m3 (46) | 22.0 μg/m3 (72) | 72.0 | |
| July 21, 2021, 6 p.m. | 26.4 ppb (25) | 5.5 ppb (6) | 28.0 ppb (27) | 21.0 ppb (20) | 22.6 ppb (22) | 1.0 ppb (2) | N/A | 0.44 ppb (5) | 54.0 μg/m3 (50) | 20.0 μg/m3 (68) | 68.0 | |
| July 21, 2021, 5 p.m. | 40.5 ppb (39) | 13.6 ppb (13) | 39.4 ppb (38) | 27.0 ppb (26) | 25.6 ppb (25) | 2.0 ppb (3) | N/A | 0.45 ppb (6) | 52.0 μg/m3 (49) | 25.0 μg/m3 (79) | 79.0 | |
| July 21, 2021, 4 p.m. | 53.2 ppb (51) | 24.1 ppb (23) | 52.7 ppb (50) | 29.0 ppb (28) | 27.9 ppb (27) | 2.0 ppb (3) | N/A | 0.48 ppb (6) | 51.0 μg/m3 (48) | 26.0 μg/m3 (81) | 81.0 | |
| July 21, 2021, 3 p.m. | 50.6 ppb (48) | 25.7 ppb (25) | 47.8 ppb (46) | 25.0 ppb (24) | 23.2 ppb (22) | 2.0 ppb (3) | N/A | 0.48 ppb (6) | 49.0 μg/m3 (46) | 24.0 μg/m3 (77) | 77.0 | |
| July 21, 2021, 2 p.m. | 52.8 ppb (50) | 30.4 ppb (29) | 50.5 ppb (48) | 22.0 ppb (21) | 21.0 ppb (20) | 1.0 ppb (2) | N/A | 0.5 ppb (6) | 39.0 μg/m3 (37) | 21.0 μg/m3 (70) | 70.0 | |
| July 21, 2021, 1 p.m. | 23.4 ppb (23) | 6.7 ppb (7) | 23.3 ppb (22) | 17.0 ppb (17) | 15.7 ppb (15) | 1.0 ppb (2) | N/A | 0.35 ppb (4) | 27.0 μg/m3 (25) | 20.0 μg/m3 (68) | 68.0 | |
| July 21, 2021, noon | 16.5 ppb (16) | 1.8 ppb (2) | 15.3 ppb (15) | 15.0 ppb (15) | 13.9 ppb (14) | 1.0 ppb (2) | N/A | 0.27 ppb (4) | 30.0 μg/m3 (28) | 16.0 μg/m3 (60) | 60.0 | |
| July 21, 2021, 11 a.m. | 29.3 ppb (28) | 9.4 ppb (9) | 32.7 ppb (31) | 20.0 ppb (19) | 21.4 ppb (21) | 1.0 ppb (2) | N/A | 0.31 ppb (4) | 26.0 μg/m3 (25) | 21.0 μg/m3 (70) | 70.0 | |
| July 21, 2021, 10 a.m. | 13.2 ppb (13) | 0.8 ppb (1) | 10.7 ppb (11) | 12.0 ppb (12) | 10.4 ppb (10) | 1.0 ppb (2) | N/A | 0.24 ppb (3) | 24.0 μg/m3 (23) | 19.0 μg/m3 (66) | 66.0 | |
| July 21, 2021, 9 a.m. | 13.6 ppb (13) | 0.5 ppb (1) | 11.2 ppb (11) | 13.0 ppb (13) | 11.0 ppb (11) | 1.0 ppb (2) | N/A | 0.27 ppb (4) | 26.0 μg/m3 (25) | 19.0 μg/m3 (66) | 66.0 | |
| July 21, 2021, 8 a.m. | 14.2 ppb (14) | 0.7 ppb (1) | 12.7 ppb (12) | 14.0 ppb (14) | 12.3 ppb (12) | 1.0 ppb (2) | N/A | 0.3 ppb (4) | 30.0 μg/m3 (28) | 15.0 μg/m3 (58) | 58.0 | |
| July 21, 2021, 7 a.m. | 14.8 ppb (14) | 0.4 ppb (1) | 13.0 ppb (13) | 14.0 ppb (14) | 12.8 ppb (13) | 1.0 ppb (2) | N/A | 0.31 ppb (4) | 31.0 μg/m3 (29) | 17.0 μg/m3 (62) | 62.0 | |
| July 21, 2021, 6 a.m. | 12.6 ppb (12) | 0.4 ppb (1) | 10.7 ppb (11) | 12.0 ppb (12) | 10.6 ppb (10) | 1.0 ppb (2) | N/A | 0.25 ppb (3) | 28.0 μg/m3 (26) | 21.0 μg/m3 (70) | 70.0 | |
| July 21, 2021, 5 a.m. | 10.1 ppb (10) | 1.4 ppb (2) | 7.5 ppb (8) | 9.0 ppb (9) | 6.7 ppb (7) | 1.0 ppb (2) | N/A | 0.21 ppb (3) | 26.0 μg/m3 (25) | 18.0 μg/m3 (64) | 64.0 | |
| July 21, 2021, 4 a.m. | 6.7 ppb (7) | 0.2 ppb (1) | 4.9 ppb (5) | 7.0 ppb (7) | 4.8 ppb (5) | 1.0 ppb (2) | N/A | 0.25 ppb (3) | 26.0 μg/m3 (25) | 19.0 μg/m3 (66) | 66.0 | |
| July 21, 2021, 3 a.m. | 7.1 ppb (7) | 0.3 ppb (1) | 5.6 ppb (6) | 7.0 ppb (7) | 5.4 ppb (6) | 1.0 ppb (2) | N/A | 0.22 ppb (3) | 27.0 μg/m3 (25) | 15.0 μg/m3 (58) | 58.0 | |
| July 21, 2021, 2 a.m. | 6.2 ppb (6) | 0.4 ppb (1) | 5.0 ppb (5) | 6.0 ppb (6) | 4.6 ppb (5) | 1.0 ppb (2) | N/A | 0.2 ppb (3) | 24.0 μg/m3 (23) | 17.0 μg/m3 (62) | 62.0 | |
| July 21, 2021, 1 a.m. | 5.5 ppb (6) | 0.6 ppb (1) | 4.4 ppb (5) | 5.0 ppb (5) | 3.7 ppb (4) | 1.0 ppb (2) | N/A | 0.18 ppb (3) | 23.0 μg/m3 (22) | 13.0 μg/m3 (53) | 53.0 | |
| July 21, 2021, midnight | 5.3 ppb (5) | 0.8 ppb (1) | 4.5 ppb (5) | 5.0 ppb (5) | 3.6 ppb (4) | 1.0 ppb (2) | N/A | 0.19 ppb (3) | 22.0 μg/m3 (21) | 15.0 μg/m3 (58) | 58.0 | |
| July 20, 2021, 11 p.m. | 5.5 ppb (6) | 0.9 ppb (1) | 4.6 ppb (5) | 5.0 ppb (5) | 3.5 ppb (4) | 1.0 ppb (2) | N/A | 0.18 ppb (3) | 22.0 μg/m3 (21) | 14.0 μg/m3 (55) | 55.0 | |
| July 20, 2021, 10 p.m. | 5.5 ppb (6) | 0.8 ppb (1) | 4.7 ppb (5) | 5.0 ppb (5) | 3.8 ppb (4) | 1.0 ppb (2) | N/A | 0.17 ppb (3) | 20.0 μg/m3 (19) | 14.0 μg/m3 (55) | 55.0 | |
| July 20, 2021, 9 p.m. | 6.5 ppb (7) | 0.9 ppb (1) | 6.4 ppb (7) | 6.0 ppb (6) | 5.3 ppb (5) | 1.0 ppb (2) | N/A | 0.21 ppb (3) | 30.0 μg/m3 (28) | 16.0 μg/m3 (60) | 60.0 | |
| July 20, 2021, 8 p.m. | 9.0 ppb (9) | 1.4 ppb (2) | 8.8 ppb (9) | 8.0 ppb (8) | 7.3 ppb (7) | 1.0 ppb (2) | N/A | 0.24 ppb (3) | 36.0 μg/m3 (34) | 19.0 μg/m3 (66) | 66.0 | |
| July 20, 2021, 7 p.m. | 18.4 ppb (18) | 3.5 ppb (4) | 17.9 ppb (17) | 15.0 ppb (15) | 14.1 ppb (14) | 1.0 ppb (2) | N/A | 0.31 ppb (4) | 38.0 μg/m3 (36) | 22.0 μg/m3 (72) | 72.0 | |
| July 20, 2021, 6 p.m. | 17.5 ppb (17) | 2.9 ppb (3) | 17.6 ppb (17) | 15.0 ppb (15) | 14.3 ppb (14) | 1.0 ppb (2) | N/A | 0.33 ppb (4) | 33.0 μg/m3 (31) | 25.0 μg/m3 (79) | 79.0 | |
| July 20, 2021, 5 p.m. | 25.8 ppb (25) | 7.0 ppb (7) | 26.5 ppb (25) | 19.0 ppb (18) | 18.1 ppb (18) | 1.0 ppb (2) | N/A | 0.4 ppb (5) | 34.0 μg/m3 (32) | 14.0 μg/m3 (55) | 55.0 | |
| July 20, 2021, 4 p.m. | 36.4 ppb (35) | 13.7 ppb (13) | 35.4 ppb (34) | 23.0 ppb (22) | 21.6 ppb (21) | 1.0 ppb (2) | N/A | 0.5 ppb (6) | 39.0 μg/m3 (37) | 20.0 μg/m3 (68) | 68.0 | |
| July 20, 2021, 3 p.m. | 28.8 ppb (28) | 10.9 ppb (11) | 27.9 ppb (27) | 18.0 ppb (17) | 16.6 ppb (16) | 1.0 ppb (2) | N/A | 0.37 ppb (5) | 28.0 μg/m3 (26) | 16.0 μg/m3 (60) | 60.0 | |
| July 20, 2021, 2 p.m. | 19.2 ppb (19) | 6.1 ppb (6) | 17.1 ppb (17) | 13.0 ppb (13) | 11.2 ppb (11) | 1.0 ppb (2) | N/A | 0.33 ppb (4) | 26.0 μg/m3 (25) | 18.0 μg/m3 (64) | 64.0 | |
| July 20, 2021, 1 p.m. | 14.2 ppb (14) | 2.2 ppb (3) | 10.8 ppb (11) | 12.0 ppb (12) | 8.7 ppb (9) | 0.0 ppb (0) | N/A | 0.32 ppb (4) | 21.0 μg/m3 (20) | 15.0 μg/m3 (58) | 58.0 | |
| July 20, 2021, noon | 8.5 ppb (9) | 0.4 ppb (1) | 6.1 ppb (6) | 8.0 ppb (8) | 5.9 ppb (6) | 0.0 ppb (0) | N/A | 0.2 ppb (3) | 24.0 μg/m3 (23) | 14.0 μg/m3 (55) | 55.0 | |
| July 20, 2021, 11 a.m. | 14.9 ppb (15) | 0.5 ppb (1) | 8.7 ppb (9) | 14.0 ppb (14) | 8.6 ppb (9) | 1.0 ppb (2) | N/A | 0.23 ppb (3) | 23.0 μg/m3 (22) | 21.0 μg/m3 (70) | 70.0 | |
| July 20, 2021, 10 a.m. | 14.1 ppb (14) | 0.5 ppb (1) | 11.2 ppb (11) | 14.0 ppb (14) | 11.0 ppb (11) | 1.0 ppb (2) | N/A | 0.22 ppb (3) | 23.0 μg/m3 (22) | 16.0 μg/m3 (60) | 60.0 | |
| July 20, 2021, 9 a.m. | 11.6 ppb (11) | 0.4 ppb (1) | 9.3 ppb (9) | 11.0 ppb (11) | 9.1 ppb (9) | 1.0 ppb (2) | N/A | 0.27 ppb (4) | 18.0 μg/m3 (17) | 15.0 μg/m3 (58) | 58.0 | |
| July 20, 2021, 8 a.m. | 16.6 ppb (16) | 0.7 ppb (1) | 20.4 ppb (20) | 16.0 ppb (16) | 19.7 ppb (19) | 1.0 ppb (2) | N/A | 0.29 ppb (4) | 25.0 μg/m3 (24) | 13.0 μg/m3 (53) | 53.0 | |
| July 20, 2021, 7 a.m. | 26.9 ppb (26) | 1.3 ppb (2) | 27.0 ppb (26) | 26.0 ppb (25) | 25.8 ppb (25) | 1.0 ppb (2) | N/A | 0.3 ppb (4) | 27.0 μg/m3 (25) | 14.0 μg/m3 (55) | 55.0 | |
| July 20, 2021, 6 a.m. | 20.5 ppb (20) | 0.5 ppb (1) | 19.5 ppb (19) | 20.0 ppb (19) | 19.0 ppb (18) | 1.0 ppb (2) | N/A | 0.29 ppb (4) | 24.0 μg/m3 (23) | 18.0 μg/m3 (64) | 64.0 | |
| July 20, 2021, 5 a.m. | 15.5 ppb (15) | 0.5 ppb (1) | 12.9 ppb (13) | 15.0 ppb (15) | 12.8 ppb (13) | 0.0 ppb (0) | N/A | 0.3 ppb (4) | 22.0 μg/m3 (21) | 21.0 μg/m3 (70) | 70.0 | |
| July 20, 2021, 4 a.m. | 14.6 ppb (14) | 1.9 ppb (2) | 13.5 ppb (13) | 13.0 ppb (13) | 11.6 ppb (11) | 1.0 ppb (2) | N/A | 0.26 ppb (4) | 31.0 μg/m3 (29) | 14.0 μg/m3 (55) | 55.0 | |
| July 20, 2021, 3 a.m. | 10.5 ppb (10) | 0.3 ppb (1) | 9.4 ppb (9) | 10.0 ppb (10) | 9.2 ppb (9) | 1.0 ppb (2) | N/A | 0.2 ppb (3) | 19.0 μg/m3 (18) | 13.0 μg/m3 (53) | 53.0 | |
| July 20, 2021, 2 a.m. | 7.5 ppb (8) | 0.4 ppb (1) | 6.1 ppb (6) | 7.0 ppb (7) | 5.7 ppb (6) | 0.0 ppb (0) | N/A | 0.18 ppb (3) | 18.0 μg/m3 (17) | 15.0 μg/m3 (58) | 58.0 | |
| July 20, 2021, 1 a.m. | 6.5 ppb (7) | 0.7 ppb (1) | 4.9 ppb (5) | 6.0 ppb (6) | 4.1 ppb (4) | 0.0 ppb (0) | N/A | 0.17 ppb (3) | 18.0 μg/m3 (17) | 13.0 μg/m3 (53) | 53.0 | |
| July 20, 2021, midnight | 5.6 ppb (6) | 0.8 ppb (1) | 3.9 ppb (4) | 5.0 ppb (5) | 3.1 ppb (3) | 0.0 ppb (0) | N/A | 0.15 ppb (2) | 15.0 μg/m3 (14) | 9.0 μg/m3 (38) | 38.0 | |
| July 19, 2021, 11 p.m. | 6.1 ppb (6) | 0.9 ppb (1) | 5.1 ppb (5) | 5.0 ppb (5) | 4.1 ppb (4) | 1.0 ppb (2) | N/A | 0.18 ppb (3) | 18.0 μg/m3 (17) | 18.0 μg/m3 (64) | 64.0 | |
| July 19, 2021, 10 p.m. | 6.7 ppb (7) | 0.9 ppb (1) | 6.4 ppb (7) | 6.0 ppb (6) | 5.3 ppb (5) | 1.0 ppb (2) | N/A | 0.19 ppb (3) | 32.0 μg/m3 (30) | 16.0 μg/m3 (60) | 60.0 | |
| July 19, 2021, 9 p.m. | 7.5 ppb (8) | 1.0 ppb (1) | 7.9 ppb (8) | 7.0 ppb (7) | 6.7 ppb (7) | 1.0 ppb (2) | N/A | 0.22 ppb (3) | 36.0 μg/m3 (34) | 14.0 μg/m3 (55) | 55.0 | |
| July 19, 2021, 8 p.m. | 10.2 ppb (10) | 1.5 ppb (2) | 10.4 ppb (10) | 9.0 ppb (9) | 8.8 ppb (9) | 1.0 ppb (2) | N/A | 0.24 ppb (3) | 33.0 μg/m3 (31) | 17.0 μg/m3 (62) | 62.0 | |
| July 19, 2021, 7 p.m. | 18.5 ppb (18) | 3.3 ppb (4) | 18.7 ppb (18) | 15.0 ppb (15) | 15.1 ppb (15) | 1.0 ppb (2) | N/A | 0.31 ppb (4) | 34.0 μg/m3 (32) | 20.0 μg/m3 (68) | 68.0 | |
| July 19, 2021, 6 p.m. | 19.0 ppb (18) | 3.2 ppb (4) | 18.5 ppb (18) | 16.0 ppb (16) | 15.1 ppb (15) | 1.0 ppb (2) | N/A | 0.36 ppb (5) | 34.0 μg/m3 (32) | 18.0 μg/m3 (64) | 64.0 | |
| July 19, 2021, 5 p.m. | 40.4 ppb (39) | 12.5 ppb (12) | 39.6 ppb (38) | 28.0 ppb (27) | 27.1 ppb (26) | 2.0 ppb (3) | N/A | 0.43 ppb (5) | 46.0 μg/m3 (43) | 17.0 μg/m3 (62) | 62.0 | |
| July 19, 2021, 4 p.m. | 51.8 ppb (49) | 21.6 ppb (21) | 50.3 ppb (48) | 30.0 ppb (29) | 28.6 ppb (27) | 1.0 ppb (2) | N/A | 0.47 ppb (6) | 43.0 μg/m3 (40) | 18.0 μg/m3 (64) | 64.0 | |
| July 19, 2021, 3 p.m. | 50.5 ppb (48) | 24.3 ppb (23) | 48.6 ppb (46) | 26.0 ppb (25) | 24.0 ppb (23) | 1.0 ppb (2) | N/A | 0.48 ppb (6) | 38.0 μg/m3 (36) | 18.0 μg/m3 (64) | 64.0 | |
| July 19, 2021, 2 p.m. | 32.7 ppb (31) | 12.8 ppb (13) | 30.5 ppb (29) | 20.0 ppb (19) | 17.5 ppb (17) | 1.0 ppb (2) | N/A | 0.41 ppb (5) | 33.0 μg/m3 (31) | 19.0 μg/m3 (66) | 66.0 | |
| July 19, 2021, 1 p.m. | 23.8 ppb (23) | 5.8 ppb (6) | 21.0 ppb (20) | 18.0 ppb (17) | 13.7 ppb (13) | 1.0 ppb (2) | N/A | 0.41 ppb (5) | 21.0 μg/m3 (20) | 17.0 μg/m3 (62) | 62.0 | |
| July 19, 2021, noon | 16.3 ppb (16) | 1.6 ppb (2) | 12.5 ppb (12) | 15.0 ppb (15) | 11.6 ppb (11) | 1.0 ppb (2) | N/A | 0.27 ppb (4) | 17.0 μg/m3 (16) | 13.0 μg/m3 (53) | 53.0 | |
| July 19, 2021, 11 a.m. | 14.0 ppb (14) | 0.6 ppb (1) | 9.3 ppb (9) | 13.0 ppb (13) | 9.1 ppb (9) | 1.0 ppb (2) | N/A | 0.24 ppb (3) | 21.0 μg/m3 (20) | 20.0 μg/m3 (68) | 68.0 | |
| July 19, 2021, 10 a.m. | 17.8 ppb (17) | 1.0 ppb (1) | 15.2 ppb (15) | 17.0 ppb (17) | 14.7 ppb (14) | 1.0 ppb (2) | N/A | 0.25 ppb (3) | 18.0 μg/m3 (17) | N/A | 17.0 | |
| July 19, 2021, 9 a.m. | 16.3 ppb (16) | 0.7 ppb (1) | 13.7 ppb (13) | 16.0 ppb (16) | 13.1 ppb (13) | 1.0 ppb (2) | N/A | 0.31 ppb (4) | 21.0 μg/m3 (20) | 19.0 μg/m3 (66) | 66.0 | |
| July 19, 2021, 8 a.m. | 15.5 ppb (15) | 0.5 ppb (1) | 14.9 ppb (15) | 15.0 ppb (15) | 14.6 ppb (14) | 1.0 ppb (2) | N/A | 0.32 ppb (4) | 23.0 μg/m3 (22) | 18.0 μg/m3 (64) | 64.0 | |
| July 19, 2021, 7 a.m. | 16.9 ppb (16) | 0.4 ppb (1) | 15.6 ppb (15) | 17.0 ppb (17) | 15.4 ppb (15) | 1.0 ppb (2) | N/A | 0.32 ppb (4) | 29.0 μg/m3 (27) | 20.0 μg/m3 (68) | 68.0 | |
| July 19, 2021, 6 a.m. | 15.9 ppb (15) | 0.4 ppb (1) | 14.8 ppb (14) | 16.0 ppb (16) | 14.6 ppb (14) | 1.0 ppb (2) | N/A | 0.28 ppb (4) | 23.0 μg/m3 (22) | 19.0 μg/m3 (66) | 66.0 | |
| July 19, 2021, 5 a.m. | 15.5 ppb (15) | 0.4 ppb (1) | 14.3 ppb (14) | 15.0 ppb (15) | 14.0 ppb (14) | 1.0 ppb (2) | N/A | 0.27 ppb (4) | 23.0 μg/m3 (22) | 21.0 μg/m3 (70) | 70.0 | |
| July 19, 2021, 4 a.m. | 12.5 ppb (12) | 0.4 ppb (1) | 11.1 ppb (11) | 12.0 ppb (12) | 11.0 ppb (11) | 1.0 ppb (2) | N/A | 0.27 ppb (4) | 20.0 μg/m3 (19) | 19.0 μg/m3 (66) | 66.0 | |
| July 19, 2021, 3 a.m. | 7.8 ppb (8) | 0.3 ppb (1) | 6.5 ppb (7) | 8.0 ppb (8) | 6.1 ppb (6) | 0.0 ppb (0) | N/A | 0.2 ppb (3) | 22.0 μg/m3 (21) | 15.0 μg/m3 (58) | 58.0 | |
| July 19, 2021, 2 a.m. | 7.6 ppb (8) | 0.3 ppb (1) | 5.2 ppb (5) | 7.0 ppb (7) | 4.9 ppb (5) | 0.0 ppb (0) | N/A | 0.2 ppb (3) | 20.0 μg/m3 (19) | 15.0 μg/m3 (58) | 58.0 | |
| July 19, 2021, 1 a.m. | 4.2 ppb (4) | 0.2 ppb (1) | 2.8 ppb (3) | 4.0 ppb (4) | 2.4 ppb (3) | 0.0 ppb (0) | N/A | 0.17 ppb (3) | 12.0 μg/m3 (12) | 11.0 μg/m3 (46) | 46.0 | |
| July 19, 2021, midnight | 4.0 ppb (4) | 0.4 ppb (1) | 2.5 ppb (3) | 4.0 ppb (4) | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 0.18 ppb (3) | 14.0 μg/m3 (13) | 12.0 μg/m3 (50) | 50.0 | |
| July 18, 2021, 11 p.m. | 3.7 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | N/A | 0.18 ppb (3) | 16.0 μg/m3 (15) | 14.0 μg/m3 (55) | 55.0 | |
| July 18, 2021, 10 p.m. | 4.5 ppb (5) | 0.5 ppb (1) | 4.6 ppb (5) | 4.0 ppb (4) | 3.9 ppb (4) | 1.0 ppb (2) | N/A | 0.18 ppb (3) | 18.0 μg/m3 (17) | 16.0 μg/m3 (60) | 60.0 | |
| July 18, 2021, 9 p.m. | 5.2 ppb (5) | 0.6 ppb (1) | 6.0 ppb (6) | 5.0 ppb (5) | 5.2 ppb (5) | 1.0 ppb (2) | N/A | 0.2 ppb (3) | 14.0 μg/m3 (13) | N/A | 13.0 | |
| July 18, 2021, 8 p.m. | 8.3 ppb (8) | 1.3 ppb (2) | 8.4 ppb (8) | 7.0 ppb (7) | 7.1 ppb (7) | 1.0 ppb (2) | N/A | 0.23 ppb (3) | 28.0 μg/m3 (26) | 20.0 μg/m3 (68) | 68.0 | |
| July 18, 2021, 7 p.m. | 7.7 ppb (8) | 0.8 ppb (1) | 8.0 ppb (8) | 7.0 ppb (7) | 7.1 ppb (7) | 1.0 ppb (2) | N/A | 0.28 ppb (4) | 23.0 μg/m3 (22) | 17.0 μg/m3 (62) | 62.0 | |
| July 18, 2021, 6 p.m. | 12.0 ppb (12) | 1.5 ppb (2) | 12.3 ppb (12) | 11.0 ppb (11) | 10.6 ppb (10) | 1.0 ppb (2) | N/A | 0.37 ppb (5) | 27.0 μg/m3 (25) | 17.0 μg/m3 (62) | 62.0 | |
| July 18, 2021, 5 p.m. | 14.8 ppb (14) | 3.1 ppb (3) | 15.1 ppb (15) | 12.0 ppb (12) | 11.8 ppb (12) | 1.0 ppb (2) | N/A | 0.37 ppb (5) | 28.0 μg/m3 (26) | 17.0 μg/m3 (62) | 62.0 | |
| July 18, 2021, 4 p.m. | 23.7 ppb (23) | 6.8 ppb (7) | 22.9 ppb (22) | 17.0 ppb (17) | 16.2 ppb (16) | 1.0 ppb (2) | N/A | 0.39 ppb (5) | 28.0 μg/m3 (26) | 20.0 μg/m3 (68) | 68.0 | |
| July 18, 2021, 3 p.m. | 31.2 ppb (30) | 9.9 ppb (10) | 30.0 ppb (29) | 21.0 ppb (20) | 20.2 ppb (20) | 1.0 ppb (2) | N/A | 0.37 ppb (5) | 24.0 μg/m3 (23) | 18.0 μg/m3 (64) | 64.0 | |
| July 18, 2021, 2 p.m. | 21.9 ppb (21) | 4.9 ppb (5) | 19.6 ppb (19) | 17.0 ppb (17) | 15.1 ppb (15) | 1.0 ppb (2) | N/A | 0.32 ppb (4) | 24.0 μg/m3 (23) | 17.0 μg/m3 (62) | 62.0 | |
| July 18, 2021, 1 p.m. | 17.0 ppb (17) | 1.9 ppb (2) | 14.7 ppb (14) | 15.0 ppb (15) | 12.7 ppb (12) | 0.0 ppb (0) | N/A | 0.29 ppb (4) | 19.0 μg/m3 (18) | 16.0 μg/m3 (60) | 60.0 | |
| July 18, 2021, noon | 10.5 ppb (10) | 1.2 ppb (2) | 7.1 ppb (7) | 9.0 ppb (9) | 6.4 ppb (7) | 0.0 ppb (0) | N/A | 0.25 ppb (3) | 11.0 μg/m3 (11) | 11.0 μg/m3 (46) | 46.0 | |
| July 18, 2021, 11 a.m. | 4.5 ppb (5) | 0.2 ppb (1) | 2.3 ppb (3) | 4.0 ppb (4) | 2.3 ppb (3) | 0.0 ppb (0) | N/A | 0.18 ppb (3) | 18.0 μg/m3 (17) | 16.0 μg/m3 (60) | 60.0 | |
| July 18, 2021, 10 a.m. | 6.4 ppb (7) | 0.3 ppb (1) | 5.6 ppb (6) | 6.0 ppb (6) | 5.5 ppb (6) | 0.0 ppb (0) | N/A | 0.21 ppb (3) | 14.0 μg/m3 (13) | 13.0 μg/m3 (53) | 53.0 | |
| July 18, 2021, 9 a.m. | 9.6 ppb (10) | 0.3 ppb (1) | 7.0 ppb (7) | 9.0 ppb (9) | 6.9 ppb (7) | 0.0 ppb (0) | N/A | 0.32 ppb (4) | 21.0 μg/m3 (20) | 17.0 μg/m3 (62) | 62.0 | |
| July 18, 2021, 8 a.m. | 9.9 ppb (10) | 0.3 ppb (1) | 9.2 ppb (9) | 10.0 ppb (10) | 9.1 ppb (9) | 0.0 ppb (0) | N/A | 0.32 ppb (4) | 22.0 μg/m3 (21) | 17.0 μg/m3 (62) | 62.0 | |
| July 18, 2021, 7 a.m. | 10.8 ppb (11) | 0.3 ppb (1) | 9.5 ppb (9) | 11.0 ppb (11) | 9.4 ppb (9) | 0.0 ppb (0) | N/A | 0.33 ppb (4) | 24.0 μg/m3 (23) | 21.0 μg/m3 (70) | 70.0 |