Concord (Chevron) CA, US: 37.9383, -122.025
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| July 25, 2021, 8 p.m. | 3.1 ppb (3) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 49.0 ppb (46) | 0.31 ppb (4) | N/A | 3.0 μg/m3 (13) | 46.0 | |
| July 25, 2021, 7 p.m. | 3.8 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 44.0 ppb (41) | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 41.0 | |
| July 25, 2021, 6 p.m. | 3.3 ppb (4) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 39.0 ppb (37) | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 37.0 | |
| July 25, 2021, 5 p.m. | 3.7 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 29.0 ppb (27) | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 27.0 | |
| July 25, 2021, 4 p.m. | 3.8 ppb (4) | 1.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 24.0 ppb (23) | 0.31 ppb (4) | N/A | 4.0 μg/m3 (17) | 23.0 | |
| July 25, 2021, 3 p.m. | 3.4 ppb (4) | 1.1 ppb (2) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 20.0 ppb (19) | 0.3 ppb (4) | N/A | 4.0 μg/m3 (17) | 19.0 | |
| July 25, 2021, 2 p.m. | 3.3 ppb (4) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 19.0 ppb (18) | 0.3 ppb (4) | N/A | 4.0 μg/m3 (17) | 18.0 | |
| July 25, 2021, 1 p.m. | 2.9 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 18.0 ppb (17) | 0.3 ppb (4) | N/A | 3.0 μg/m3 (13) | 17.0 | |
| July 25, 2021, noon | 2.6 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 19.0 ppb (18) | 0.3 ppb (4) | N/A | 4.0 μg/m3 (17) | 18.0 | |
| July 25, 2021, 11 a.m. | 2.4 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 19.0 ppb (18) | 0.3 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 25, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 25, 2021, 9 a.m. | 2.9 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 19.0 ppb (18) | 0.3 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 25, 2021, 8 a.m. | 3.1 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 22.0 ppb (21) | 0.31 ppb (4) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 25, 2021, 7 a.m. | 2.6 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 26.0 ppb (25) | 0.3 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 25, 2021, 6 a.m. | 2.4 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 35.0 ppb (33) | 0.3 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 25, 2021, 5 a.m. | 2.2 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 39.0 ppb (37) | 0.3 ppb (4) | N/A | 5.0 μg/m3 (21) | 37.0 | |
| July 25, 2021, 4 a.m. | 1.7 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 42.0 ppb (39) | 0.29 ppb (4) | N/A | 8.0 μg/m3 (34) | 39.0 | |
| July 25, 2021, 3 a.m. | 1.5 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 46.0 ppb (43) | 0.29 ppb (4) | N/A | 6.0 μg/m3 (25) | 43.0 | |
| July 25, 2021, 2 a.m. | 1.6 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 52.0 ppb (49) | 0.28 ppb (4) | N/A | 3.0 μg/m3 (13) | 49.0 | |
| July 25, 2021, 1 a.m. | 1.4 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 59.0 ppb (65) | 0.26 ppb (4) | N/A | 4.0 μg/m3 (17) | 65.0 | |
| July 25, 2021, midnight | 1.2 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 62.0 ppb (74) | 0.25 ppb (3) | N/A | 4.0 μg/m3 (17) | 74.0 | |
| July 24, 2021, 11 p.m. | 1.7 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 60.0 ppb (68) | 0.26 ppb (4) | N/A | 5.0 μg/m3 (21) | 68.0 | |
| July 24, 2021, 10 p.m. | 2.0 ppb (2) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 58.0 ppb (61) | 0.27 ppb (4) | N/A | 8.0 μg/m3 (34) | 61.0 | |
| July 24, 2021, 9 p.m. | 2.2 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 53.0 ppb (50) | 0.28 ppb (4) | N/A | 8.0 μg/m3 (34) | 50.0 | |
| July 24, 2021, 8 p.m. | 7.7 ppb (8) | 1.3 ppb (2) | N/A | 6.0 ppb (6) | N/A | 4.0 ppb (6) | 45.0 ppb (42) | 0.36 ppb (5) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 24, 2021, 7 p.m. | 9.7 ppb (10) | 2.1 ppb (2) | N/A | 8.0 ppb (8) | N/A | 4.0 ppb (6) | 35.0 ppb (33) | 0.39 ppb (5) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 24, 2021, 6 p.m. | 8.7 ppb (9) | 2.1 ppb (2) | N/A | 7.0 ppb (7) | N/A | 2.0 ppb (3) | 31.0 ppb (29) | 0.37 ppb (5) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 24, 2021, 5 p.m. | 3.3 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 36.0 ppb (34) | 0.32 ppb (4) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 24, 2021, 4 p.m. | 4.5 ppb (5) | 1.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 28.0 ppb (26) | 0.32 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 24, 2021, 3 p.m. | 5.2 ppb (5) | 1.5 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 22.0 ppb (21) | 0.32 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 24, 2021, 2 p.m. | 3.8 ppb (4) | 0.9 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 20.0 ppb (19) | 0.31 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 24, 2021, 1 p.m. | 3.9 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.32 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 24, 2021, noon | 3.8 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.31 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 24, 2021, 11 a.m. | 3.8 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.3 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 24, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 24, 2021, 9 a.m. | 5.5 ppb (6) | 0.4 ppb (1) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.32 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 24, 2021, 8 a.m. | 3.7 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 21.0 ppb (20) | 0.31 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 24, 2021, 7 a.m. | 3.2 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 24.0 ppb (23) | 0.3 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 24, 2021, 6 a.m. | 2.5 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 30.0 ppb (28) | 0.29 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 24, 2021, 5 a.m. | 2.1 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | 0.29 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 24, 2021, 4 a.m. | 2.3 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | 0.3 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 24, 2021, 3 a.m. | 2.1 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 36.0 ppb (34) | 0.3 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 24, 2021, 2 a.m. | 2.0 ppb (2) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 41.0 ppb (38) | 0.29 ppb (4) | N/A | 6.0 μg/m3 (25) | 38.0 | |
| July 24, 2021, 1 a.m. | 1.9 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 44.0 ppb (41) | 0.27 ppb (4) | N/A | 9.0 μg/m3 (38) | 41.0 | |
| July 24, 2021, midnight | 2.3 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 51.0 ppb (48) | 0.27 ppb (4) | N/A | 6.0 μg/m3 (25) | 48.0 | |
| July 23, 2021, 11 p.m. | 2.7 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 55.0 ppb (51) | 0.29 ppb (4) | N/A | 8.0 μg/m3 (34) | 51.0 | |
| July 23, 2021, 10 p.m. | 4.0 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 56.0 ppb (55) | 0.33 ppb (4) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 23, 2021, 9 p.m. | 5.7 ppb (6) | 0.8 ppb (1) | N/A | 5.0 ppb (5) | N/A | 2.0 ppb (3) | 57.0 ppb (58) | 0.34 ppb (4) | N/A | 11.0 μg/m3 (46) | 58.0 | |
| July 23, 2021, 8 p.m. | 6.9 ppb (7) | 1.0 ppb (1) | N/A | 6.0 ppb (6) | N/A | 2.0 ppb (3) | 53.0 ppb (50) | 0.36 ppb (5) | N/A | 10.0 μg/m3 (42) | 50.0 | |
| July 23, 2021, 7 p.m. | 13.9 ppb (14) | 3.1 ppb (3) | N/A | 11.0 ppb (11) | N/A | 5.0 ppb (8) | 34.0 ppb (32) | 0.39 ppb (5) | N/A | 17.0 μg/m3 (62) | 62.0 | |
| July 23, 2021, 6 p.m. | 10.9 ppb (11) | 2.6 ppb (3) | N/A | 8.0 ppb (8) | N/A | 2.0 ppb (3) | 31.0 ppb (29) | 0.41 ppb (5) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 23, 2021, 5 p.m. | 4.1 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 31.0 ppb (29) | 0.33 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 23, 2021, 4 p.m. | 4.7 ppb (5) | 1.3 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 25.0 ppb (24) | 0.33 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 23, 2021, 3 p.m. | 6.1 ppb (6) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 18.0 ppb (17) | 0.34 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 23, 2021, 2 p.m. | 7.1 ppb (7) | 2.0 ppb (2) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 13.0 ppb (13) | 0.35 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 23, 2021, 1 p.m. | 7.2 ppb (7) | 1.0 ppb (1) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 10.0 ppb (10) | 0.34 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 23, 2021, noon | 4.8 ppb (5) | 0.4 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 12.0 ppb (12) | 0.31 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 23, 2021, 11 a.m. | 3.7 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 15.0 ppb (14) | 0.3 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 23, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 23, 2021, 9 a.m. | 2.8 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 18.0 ppb (17) | 0.28 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 23, 2021, 8 a.m. | 2.6 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 19.0 ppb (18) | 0.28 ppb (4) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 23, 2021, 7 a.m. | 2.6 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 19.0 ppb (18) | 0.27 ppb (4) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 23, 2021, 6 a.m. | 2.6 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 21.0 ppb (20) | 0.27 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 23, 2021, 5 a.m. | 2.8 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 21.0 ppb (20) | 0.27 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 23, 2021, 4 a.m. | 3.1 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 21.0 ppb (20) | 0.28 ppb (4) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 23, 2021, 3 a.m. | 3.4 ppb (4) | 0.5 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 22.0 ppb (21) | 0.28 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 23, 2021, 2 a.m. | 4.9 ppb (5) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 21.0 ppb (20) | 0.3 ppb (4) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 23, 2021, 1 a.m. | 4.6 ppb (5) | 1.1 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 25.0 ppb (24) | 0.3 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 23, 2021, midnight | 4.5 ppb (5) | 1.1 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 28.0 ppb (26) | 0.3 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 22, 2021, 11 p.m. | 4.9 ppb (5) | 1.2 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | 0.3 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 22, 2021, 10 p.m. | 4.3 ppb (5) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 38.0 ppb (36) | 0.3 ppb (4) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 22, 2021, 9 p.m. | 4.0 ppb (4) | 0.9 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 39.0 ppb (37) | 0.31 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 22, 2021, 8 p.m. | 4.4 ppb (5) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 39.0 ppb (37) | 0.31 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 22, 2021, 7 p.m. | 4.2 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 35.0 ppb (33) | 0.3 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 22, 2021, 6 p.m. | 6.2 ppb (6) | 1.8 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 28.0 ppb (26) | 0.33 ppb (4) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 22, 2021, 5 p.m. | 6.7 ppb (7) | 2.2 ppb (3) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 23.0 ppb (22) | 0.33 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 22, 2021, 4 p.m. | 4.9 ppb (5) | 1.5 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 22.0 ppb (21) | 0.33 ppb (4) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 22, 2021, 3 p.m. | 4.7 ppb (5) | 1.6 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.33 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 22, 2021, 2 p.m. | 5.1 ppb (5) | 1.4 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 15.0 ppb (14) | 0.32 ppb (4) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 22, 2021, 1 p.m. | 4.0 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 15.0 ppb (14) | 0.3 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 22, 2021, noon | 3.1 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 16.0 ppb (15) | 0.28 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 22, 2021, 11 a.m. | 2.1 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 18.0 ppb (17) | 0.27 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 22, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 22, 2021, 9 a.m. | 2.3 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.26 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 22, 2021, 8 a.m. | 2.5 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.27 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 22, 2021, 7 a.m. | 3.0 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 16.0 ppb (15) | 0.27 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 22, 2021, 6 a.m. | 3.4 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.27 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 22, 2021, 5 a.m. | 3.2 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 18.0 ppb (17) | 0.27 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 22, 2021, 4 a.m. | 2.9 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 20.0 ppb (19) | 0.26 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 22, 2021, 3 a.m. | 3.7 ppb (4) | 0.5 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 22.0 ppb (21) | 0.27 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 22, 2021, 2 a.m. | 4.5 ppb (5) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 25.0 ppb (24) | 0.27 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 22, 2021, 1 a.m. | 4.5 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 29.0 ppb (27) | 0.27 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 22, 2021, midnight | 5.2 ppb (5) | 1.2 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 33.0 ppb (31) | 0.28 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 21, 2021, 11 p.m. | 5.2 ppb (5) | 1.1 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 38.0 ppb (36) | 0.28 ppb (4) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 21, 2021, 10 p.m. | 4.9 ppb (5) | 1.1 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 39.0 ppb (37) | 0.29 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 21, 2021, 9 p.m. | 2.9 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 38.0 ppb (36) | 0.28 ppb (4) | N/A | 7.0 μg/m3 (30) | 36.0 | |
| July 21, 2021, 8 p.m. | 3.1 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 36.0 ppb (34) | 0.28 ppb (4) | N/A | 7.0 μg/m3 (30) | 34.0 | |
| July 21, 2021, 7 p.m. | 4.3 ppb (5) | 1.1 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 33.0 ppb (31) | 0.29 ppb (4) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 21, 2021, 6 p.m. | 4.4 ppb (5) | 1.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 31.0 ppb (29) | 0.29 ppb (4) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 21, 2021, 5 p.m. | 5.4 ppb (6) | 1.8 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 25.0 ppb (24) | 0.3 ppb (4) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 21, 2021, 4 p.m. | 6.2 ppb (6) | 2.2 ppb (3) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 21.0 ppb (20) | 0.3 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 21, 2021, 3 p.m. | 4.3 ppb (5) | 1.5 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 20.0 ppb (19) | 0.29 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 21, 2021, 2 p.m. | 4.1 ppb (4) | 1.1 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 19.0 ppb (18) | 0.28 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 21, 2021, 1 p.m. | 3.6 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 18.0 ppb (17) | 0.28 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 21, 2021, noon | 3.0 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.27 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 21, 2021, 11 a.m. | 2.4 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 18.0 ppb (17) | 0.26 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 21, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 21, 2021, 9 a.m. | 2.4 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.25 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 21, 2021, 8 a.m. | 2.6 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 16.0 ppb (15) | 0.26 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 21, 2021, 7 a.m. | 3.1 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 16.0 ppb (15) | 0.26 ppb (4) | N/A | 1.0 μg/m3 (5) | 15.0 | |
| July 21, 2021, 6 a.m. | 3.1 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 16.0 ppb (15) | 0.26 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 21, 2021, 5 a.m. | 3.5 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 16.0 ppb (15) | 0.26 ppb (4) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 21, 2021, 4 a.m. | 4.0 ppb (4) | 0.4 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.26 ppb (4) | N/A | 3.0 μg/m3 (13) | 16.0 | |
| July 21, 2021, 3 a.m. | 4.7 ppb (5) | 0.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.26 ppb (4) | N/A | 2.0 μg/m3 (9) | 16.0 | |
| July 21, 2021, 2 a.m. | 4.5 ppb (5) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 19.0 ppb (18) | 0.26 ppb (4) | N/A | 3.0 μg/m3 (13) | 18.0 | |
| July 21, 2021, 1 a.m. | 4.5 ppb (5) | 1.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 23.0 ppb (22) | 0.26 ppb (4) | N/A | 3.0 μg/m3 (13) | 22.0 | |
| July 21, 2021, midnight | 4.5 ppb (5) | 1.1 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 26.0 ppb (25) | 0.27 ppb (4) | N/A | 4.0 μg/m3 (17) | 25.0 | |
| July 20, 2021, 11 p.m. | 4.2 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 29.0 ppb (27) | 0.27 ppb (4) | N/A | 6.0 μg/m3 (25) | 27.0 | |
| July 20, 2021, 10 p.m. | 4.3 ppb (5) | 1.1 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 29.0 ppb (27) | 0.27 ppb (4) | N/A | 4.0 μg/m3 (17) | 27.0 | |
| July 20, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| July 20, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| July 20, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| July 20, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 20, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 20, 2021, 3 p.m. | 4.3 ppb (5) | 1.6 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 16.0 ppb (15) | 0.27 ppb (4) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 20, 2021, 2 p.m. | 4.0 ppb (4) | 1.3 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 15.0 ppb (14) | 0.27 ppb (4) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 20, 2021, 1 p.m. | 4.6 ppb (5) | 0.7 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 13.0 ppb (13) | 0.27 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 20, 2021, noon | 3.8 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 14.0 ppb (13) | 0.27 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 20, 2021, 11 a.m. | 2.9 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 15.0 ppb (14) | 0.26 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 20, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 20, 2021, 9 a.m. | 2.7 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.25 ppb (3) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 20, 2021, 8 a.m. | 2.6 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.25 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 20, 2021, 7 a.m. | 2.9 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.26 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 20, 2021, 6 a.m. | 3.0 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 17.0 ppb (16) | 0.26 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 20, 2021, 5 a.m. | 3.5 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 18.0 ppb (17) | 0.26 ppb (4) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 20, 2021, 4 a.m. | 4.2 ppb (4) | 0.4 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 18.0 ppb (17) | 0.26 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 20, 2021, 3 a.m. | 4.7 ppb (5) | 0.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 21.0 ppb (20) | 0.28 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 20, 2021, 2 a.m. | 4.6 ppb (5) | 0.7 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 24.0 ppb (23) | 0.28 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 20, 2021, 1 a.m. | 3.2 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | 0.26 ppb (4) | N/A | 6.0 μg/m3 (25) | 30.0 | |
| July 20, 2021, midnight | 2.2 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 38.0 ppb (36) | 0.24 ppb (3) | N/A | 7.0 μg/m3 (30) | 36.0 | |
| July 19, 2021, 11 p.m. | 2.2 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 41.0 ppb (38) | 0.25 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 19, 2021, 10 p.m. | 1.8 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 48.0 ppb (45) | 0.24 ppb (3) | N/A | 7.0 μg/m3 (30) | 45.0 | |
| July 19, 2021, 9 p.m. | 2.1 ppb (2) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (47) | 0.25 ppb (3) | N/A | 7.0 μg/m3 (30) | 47.0 | |
| July 19, 2021, 8 p.m. | 3.4 ppb (4) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 48.0 ppb (45) | 0.26 ppb (4) | N/A | 9.0 μg/m3 (38) | 45.0 | |
| July 19, 2021, 7 p.m. | 12.6 ppb (12) | 3.2 ppb (4) | N/A | 9.0 ppb (9) | N/A | 5.0 ppb (8) | 30.0 ppb (28) | 0.34 ppb (4) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 19, 2021, 6 p.m. | 13.9 ppb (14) | 4.1 ppb (4) | N/A | 10.0 ppb (10) | N/A | 5.0 ppb (8) | 23.0 ppb (22) | 0.34 ppb (4) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 19, 2021, 5 p.m. | 9.7 ppb (10) | 2.6 ppb (3) | N/A | 7.0 ppb (7) | N/A | 2.0 ppb (3) | 28.0 ppb (26) | 0.33 ppb (4) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 19, 2021, 4 p.m. | 6.1 ppb (6) | 1.5 ppb (2) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 26.0 ppb (25) | 0.31 ppb (4) | N/A | N/A | 25.0 | |
| July 19, 2021, 3 p.m. | 5.7 ppb (6) | 1.5 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 21.0 ppb (20) | 0.31 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 19, 2021, 2 p.m. | 6.9 ppb (7) | 1.6 ppb (2) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (2) | 15.0 ppb (14) | 0.31 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 19, 2021, 1 p.m. | 8.2 ppb (8) | 0.9 ppb (1) | N/A | 7.0 ppb (7) | N/A | 1.0 ppb (2) | 10.0 ppb (10) | 0.3 ppb (4) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 19, 2021, noon | 7.4 ppb (7) | 0.6 ppb (1) | N/A | 7.0 ppb (7) | N/A | 1.0 ppb (2) | 11.0 ppb (11) | 0.28 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 19, 2021, 11 a.m. | 5.3 ppb (5) | 0.5 ppb (1) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 15.0 ppb (14) | 0.29 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 19, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 19, 2021, 9 a.m. | 2.7 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 22.0 ppb (21) | 0.26 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 19, 2021, 8 a.m. | 2.0 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 24.0 ppb (23) | 0.24 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 19, 2021, 7 a.m. | 1.8 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 25.0 ppb (24) | 0.24 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 19, 2021, 6 a.m. | 1.9 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 27.0 ppb (25) | 0.25 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 19, 2021, 5 a.m. | 1.8 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 29.0 ppb (27) | 0.24 ppb (3) | N/A | 6.0 μg/m3 (25) | 27.0 | |
| July 19, 2021, 4 a.m. | 1.9 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 31.0 ppb (29) | 0.24 ppb (3) | N/A | 5.0 μg/m3 (21) | 29.0 | |
| July 19, 2021, 3 a.m. | 1.4 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 36.0 ppb (34) | 0.23 ppb (3) | N/A | 3.0 μg/m3 (13) | 34.0 | |
| July 19, 2021, 2 a.m. | 1.3 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 38.0 ppb (36) | 0.23 ppb (3) | N/A | 4.0 μg/m3 (17) | 36.0 | |
| July 19, 2021, 1 a.m. | 1.6 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 39.0 ppb (37) | 0.23 ppb (3) | N/A | 0.0 μg/m3 (0) | 37.0 | |
| July 19, 2021, midnight | 1.4 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 39.0 ppb (37) | 0.22 ppb (3) | N/A | 5.0 μg/m3 (21) | 37.0 | |
| July 18, 2021, 11 p.m. | 1.6 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 44.0 ppb (41) | 0.22 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 18, 2021, 10 p.m. | 1.4 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 49.0 ppb (46) | 0.23 ppb (3) | N/A | 4.0 μg/m3 (17) | 46.0 | |
| July 18, 2021, 9 p.m. | 3.1 ppb (3) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 49.0 ppb (46) | 0.25 ppb (3) | N/A | 7.0 μg/m3 (30) | 46.0 | |
| July 18, 2021, 8 p.m. | 10.6 ppb (10) | 2.0 ppb (2) | N/A | 9.0 ppb (9) | N/A | 6.0 ppb (9) | 38.0 ppb (36) | 0.33 ppb (4) | N/A | 14.0 μg/m3 (55) | 55.0 |