Rivside (Poinsetta Place) CA, US: 33.996387, -117.4925
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 21, 2021, 6 p.m. | 2.7 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 43.0 ppb (40) | 0.13 ppb (2) | 30.0 μg/m3 (28) | 10.8 μg/m3 (46) | 46.0 | |
| April 21, 2021, 5 p.m. | 4.1 ppb (4) | 1.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 41.0 ppb (38) | 0.14 ppb (2) | 33.5 μg/m3 (32) | 8.8 μg/m3 (37) | 38.0 | |
| April 21, 2021, 4 p.m. | 7.9 ppb (8) | 2.3 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | 34.0 ppb (32) | 0.16 ppb (3) | 44.8 μg/m3 (42) | 17.8 μg/m3 (63) | 63.0 | |
| April 21, 2021, 3 p.m. | 7.7 ppb (8) | 1.6 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | 31.0 ppb (29) | 0.16 ppb (3) | 43.0 μg/m3 (40) | 18.6 μg/m3 (65) | 65.0 | |
| April 21, 2021, 2 p.m. | 10.1 ppb (10) | 1.0 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | 27.0 ppb (25) | 0.16 ppb (3) | 41.1 μg/m3 (39) | 14.4 μg/m3 (56) | 56.0 | |
| April 21, 2021, 1 p.m. | 10.7 ppb (11) | 0.5 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 26.0 ppb (25) | 0.17 ppb (3) | 33.0 μg/m3 (31) | 16.6 μg/m3 (61) | 61.0 | |
| April 21, 2021, noon | 11.7 ppb (12) | 0.6 ppb (1) | N/A | 11.0 ppb (11) | N/A | N/A | 25.0 ppb (24) | 0.16 ppb (3) | 27.8 μg/m3 (26) | 13.7 μg/m3 (55) | 55.0 | |
| April 21, 2021, 11 a.m. | 7.4 ppb (7) | 0.3 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 29.0 ppb (27) | 0.14 ppb (2) | 25.6 μg/m3 (24) | 12.2 μg/m3 (52) | 52.0 | |
| April 21, 2021, 10 a.m. | 6.5 ppb (7) | 0.3 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 30.0 ppb (28) | 0.13 ppb (2) | 33.3 μg/m3 (31) | 10.8 μg/m3 (46) | 46.0 | |
| April 21, 2021, 9 a.m. | 4.2 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 33.0 ppb (31) | 0.12 ppb (2) | 35.2 μg/m3 (33) | 19.6 μg/m3 (67) | 67.0 | |
| April 21, 2021, 8 a.m. | 2.5 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 35.0 ppb (33) | 0.1 ppb (2) | 30.5 μg/m3 (29) | 20.1 μg/m3 (68) | 68.0 | |
| April 21, 2021, 7 a.m. | 1.8 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 34.0 ppb (32) | 0.1 ppb (2) | 26.1 μg/m3 (25) | 13.4 μg/m3 (54) | 54.0 | |
| April 21, 2021, 6 a.m. | 2.4 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 33.0 ppb (31) | 0.11 ppb (2) | 23.3 μg/m3 (22) | 14.1 μg/m3 (56) | 56.0 | |
| April 21, 2021, 5 a.m. | 2.5 ppb (3) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 33.0 ppb (31) | 0.11 ppb (2) | 31.8 μg/m3 (30) | 14.1 μg/m3 (56) | 56.0 | |
| April 21, 2021, 4 a.m. | 3.2 ppb (4) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 33.0 ppb (31) | 0.13 ppb (2) | 27.1 μg/m3 (26) | 19.4 μg/m3 (67) | 67.0 | |
| April 21, 2021, 3 a.m. | 3.3 ppb (4) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 36.0 ppb (34) | 0.14 ppb (2) | 39.1 μg/m3 (37) | 14.9 μg/m3 (57) | 57.0 | |
| April 21, 2021, 2 a.m. | 4.6 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 40.0 ppb (38) | 0.16 ppb (3) | 44.3 μg/m3 (42) | 17.4 μg/m3 (63) | 63.0 | |
| April 21, 2021, 1 a.m. | 3.4 ppb (4) | 0.5 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 46.0 ppb (43) | 0.16 ppb (3) | 53.7 μg/m3 (50) | 14.1 μg/m3 (56) | 56.0 | |
| April 21, 2021, midnight | 3.3 ppb (4) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 50.0 ppb (47) | 0.14 ppb (2) | 62.7 μg/m3 (55) | 18.8 μg/m3 (66) | 66.0 | |
| April 20, 2021, 11 p.m. | 3.1 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 57.0 ppb (58) | 0.15 ppb (2) | 64.1 μg/m3 (56) | 15.4 μg/m3 (58) | 58.0 | |
| April 20, 2021, 10 p.m. | 3.3 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 63.0 ppb (78) | 0.16 ppb (3) | 74.7 μg/m3 (61) | 20.8 μg/m3 (70) | 78.0 | |
| April 20, 2021, 9 p.m. | 4.4 ppb (5) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 69.0 ppb (97) | 0.19 ppb (3) | 78.6 μg/m3 (63) | 20.5 μg/m3 (69) | 97.0 | |
| April 20, 2021, 8 p.m. | 4.0 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 67.0 ppb (91) | 0.18 ppb (3) | 58.4 μg/m3 (53) | 15.9 μg/m3 (59) | 91.0 | |
| April 20, 2021, 7 p.m. | 9.5 ppb (9) | 1.8 ppb (2) | N/A | 8.0 ppb (8) | N/A | N/A | 62.0 ppb (74) | 0.22 ppb (3) | 78.1 μg/m3 (63) | 19.1 μg/m3 (66) | 74.0 | |
| April 20, 2021, 6 p.m. | 11.7 ppb (12) | 2.8 ppb (3) | N/A | 9.0 ppb (9) | N/A | N/A | 52.0 ppb (49) | 0.25 ppb (3) | 66.5 μg/m3 (57) | 21.3 μg/m3 (71) | 71.0 | |
| April 20, 2021, 5 p.m. | 20.2 ppb (20) | 6.5 ppb (7) | N/A | 14.0 ppb (14) | N/A | N/A | 36.0 ppb (34) | 0.3 ppb (4) | 75.9 μg/m3 (62) | 24.0 μg/m3 (77) | 77.0 | |
| April 20, 2021, 4 p.m. | 26.1 ppb (25) | 9.9 ppb (10) | N/A | 16.0 ppb (16) | N/A | N/A | 25.0 ppb (24) | 0.34 ppb (4) | 66.3 μg/m3 (57) | 19.3 μg/m3 (67) | 67.0 | |
| April 20, 2021, 3 p.m. | 33.4 ppb (32) | 14.8 ppb (14) | N/A | 19.0 ppb (18) | N/A | N/A | 16.0 ppb (15) | 0.36 ppb (5) | 66.5 μg/m3 (57) | 24.4 μg/m3 (77) | 77.0 | |
| April 20, 2021, 2 p.m. | 27.6 ppb (27) | 10.2 ppb (10) | N/A | 17.0 ppb (17) | N/A | N/A | 11.0 ppb (11) | 0.34 ppb (4) | 79.6 μg/m3 (64) | 22.5 μg/m3 (73) | 73.0 | |
| April 20, 2021, 1 p.m. | 34.2 ppb (33) | 15.1 ppb (15) | N/A | 19.0 ppb (18) | N/A | N/A | 3.0 ppb (3) | 0.43 ppb (5) | 85.7 μg/m3 (67) | 20.3 μg/m3 (69) | 69.0 | |
| April 20, 2021, noon | 30.2 ppb (29) | 9.3 ppb (9) | N/A | 21.0 ppb (20) | N/A | N/A | 2.0 ppb (2) | 0.43 ppb (5) | 62.0 μg/m3 (55) | 27.1 μg/m3 (83) | 83.0 | |
| April 20, 2021, 11 a.m. | 26.0 ppb (25) | 4.4 ppb (5) | N/A | 22.0 ppb (21) | N/A | N/A | 4.0 ppb (4) | 0.38 ppb (5) | 56.2 μg/m3 (52) | 20.5 μg/m3 (69) | 69.0 | |
| April 20, 2021, 10 a.m. | 24.3 ppb (23) | 2.8 ppb (3) | N/A | 22.0 ppb (21) | N/A | N/A | 4.0 ppb (4) | 0.35 ppb (4) | 56.7 μg/m3 (52) | 14.9 μg/m3 (57) | 57.0 | |
| April 20, 2021, 9 a.m. | 15.2 ppb (15) | 0.9 ppb (1) | N/A | 14.0 ppb (14) | N/A | N/A | 15.0 ppb (14) | 0.36 ppb (5) | 50.8 μg/m3 (48) | 16.3 μg/m3 (60) | 60.0 | |
| April 20, 2021, 8 a.m. | 13.5 ppb (13) | 0.5 ppb (1) | N/A | 13.0 ppb (13) | N/A | N/A | 18.0 ppb (17) | 0.29 ppb (4) | 57.1 μg/m3 (53) | 20.6 μg/m3 (69) | 69.0 | |
| April 20, 2021, 7 a.m. | 13.8 ppb (14) | 0.5 ppb (1) | N/A | 13.0 ppb (13) | N/A | N/A | 22.0 ppb (21) | 0.29 ppb (4) | 76.3 μg/m3 (62) | 16.3 μg/m3 (60) | 62.0 | |
| April 20, 2021, 6 a.m. | 12.1 ppb (12) | 0.7 ppb (1) | N/A | 11.0 ppb (11) | N/A | N/A | 29.0 ppb (27) | 0.26 ppb (4) | 45.0 μg/m3 (42) | 13.4 μg/m3 (54) | 54.0 | |
| April 20, 2021, 5 a.m. | 13.7 ppb (13) | 0.5 ppb (1) | N/A | 13.0 ppb (13) | N/A | N/A | 34.0 ppb (32) | 0.29 ppb (4) | 48.4 μg/m3 (45) | 14.6 μg/m3 (57) | 57.0 | |
| April 20, 2021, 4 a.m. | 10.6 ppb (10) | 0.3 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 41.0 ppb (38) | 0.26 ppb (4) | 40.1 μg/m3 (38) | 13.4 μg/m3 (54) | 54.0 | |
| April 20, 2021, 3 a.m. | 8.4 ppb (8) | 0.4 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 47.0 ppb (44) | 0.22 ppb (3) | 42.8 μg/m3 (40) | 11.3 μg/m3 (48) | 48.0 | |
| April 20, 2021, 2 a.m. | 8.6 ppb (9) | 0.4 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 53.0 ppb (50) | 0.22 ppb (3) | 52.5 μg/m3 (49) | 11.9 μg/m3 (50) | 50.0 | |
| April 20, 2021, 1 a.m. | 7.6 ppb (8) | 0.7 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 58.0 ppb (61) | 0.21 ppb (3) | 60.3 μg/m3 (54) | 11.4 μg/m3 (48) | 61.0 | |
| April 20, 2021, midnight | 5.2 ppb (5) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 65.0 ppb (84) | 0.19 ppb (3) | 54.2 μg/m3 (51) | 7.9 μg/m3 (33) | 84.0 | |
| April 19, 2021, 11 p.m. | 2.3 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 67.0 ppb (91) | 0.16 ppb (3) | 43.8 μg/m3 (41) | 7.4 μg/m3 (31) | 91.0 | |
| April 19, 2021, 10 p.m. | 2.5 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 69.0 ppb (97) | 0.17 ppb (3) | 49.4 μg/m3 (46) | 9.6 μg/m3 (40) | 97.0 | |
| April 19, 2021, 9 p.m. | 2.4 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 70.0 ppb (100) | 0.16 ppb (3) | 43.3 μg/m3 (41) | 11.0 μg/m3 (46) | 100.0 | |
| April 19, 2021, 8 p.m. | 3.3 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 68.0 ppb (94) | 0.18 ppb (3) | 34.7 μg/m3 (33) | 9.3 μg/m3 (39) | 94.0 | |
| April 19, 2021, 7 p.m. | 2.9 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 64.0 ppb (81) | 0.16 ppb (3) | 33.7 μg/m3 (32) | 8.8 μg/m3 (37) | 81.0 | |
| April 19, 2021, 6 p.m. | 10.0 ppb (10) | 2.4 ppb (3) | N/A | 8.0 ppb (8) | N/A | N/A | 58.0 ppb (61) | 0.18 ppb (3) | 54.7 μg/m3 (51) | 10.8 μg/m3 (46) | 61.0 | |
| April 19, 2021, 5 p.m. | 20.5 ppb (20) | 5.5 ppb (6) | N/A | 15.0 ppb (15) | N/A | N/A | 43.0 ppb (40) | 0.25 ppb (3) | 47.9 μg/m3 (45) | 16.1 μg/m3 (60) | 60.0 | |
| April 19, 2021, 4 p.m. | 39.7 ppb (38) | 14.6 ppb (14) | N/A | 24.0 ppb (23) | N/A | N/A | 27.0 ppb (25) | 0.38 ppb (5) | 49.4 μg/m3 (46) | 8.6 μg/m3 (36) | 46.0 | |
| April 19, 2021, 3 p.m. | 95.5 ppb (96) | 58.5 ppb (56) | N/A | 37.0 ppb (35) | N/A | N/A | 8.0 ppb (8) | 0.71 ppb (8) | 92.8 μg/m3 (70) | 20.5 μg/m3 (69) | 96.0 | |
| April 19, 2021, 2 p.m. | 83.0 ppb (82) | 54.9 ppb (52) | N/A | 28.0 ppb (27) | N/A | N/A | 4.0 ppb (4) | 0.82 ppb (10) | 105.8 μg/m3 (77) | 20.3 μg/m3 (69) | 82.0 | |
| April 19, 2021, 1 p.m. | 78.1 ppb (77) | 53.3 ppb (51) | N/A | 25.0 ppb (24) | N/A | N/A | 2.0 ppb (2) | 0.92 ppb (11) | 114.8 μg/m3 (81) | 17.9 μg/m3 (64) | 81.0 | |
| April 19, 2021, noon | 60.7 ppb (59) | 36.8 ppb (35) | N/A | 24.0 ppb (23) | N/A | N/A | 1.0 ppb (1) | 0.6 ppb (7) | 55.9 μg/m3 (52) | 17.1 μg/m3 (62) | 62.0 | |
| April 19, 2021, 11 a.m. | 39.1 ppb (37) | 12.5 ppb (12) | N/A | 27.0 ppb (26) | N/A | N/A | 1.0 ppb (1) | 0.49 ppb (6) | 55.7 μg/m3 (52) | 16.6 μg/m3 (61) | 61.0 | |
| April 19, 2021, 10 a.m. | 37.5 ppb (36) | 10.5 ppb (10) | N/A | 27.0 ppb (26) | N/A | N/A | 1.0 ppb (1) | 0.46 ppb (6) | 62.7 μg/m3 (55) | 16.6 μg/m3 (61) | 61.0 | |
| April 19, 2021, 9 a.m. | 29.8 ppb (29) | 5.1 ppb (5) | N/A | 25.0 ppb (24) | N/A | N/A | 2.0 ppb (2) | 0.5 ppb (6) | 58.6 μg/m3 (53) | 16.3 μg/m3 (60) | 60.0 | |
| April 19, 2021, 8 a.m. | 19.2 ppb (19) | 2.0 ppb (2) | N/A | 17.0 ppb (17) | N/A | N/A | 9.0 ppb (9) | 0.42 ppb (5) | 62.0 μg/m3 (55) | 14.6 μg/m3 (57) | 57.0 | |
| April 19, 2021, 7 a.m. | 22.5 ppb (22) | 1.2 ppb (2) | N/A | 21.0 ppb (20) | N/A | N/A | 9.0 ppb (9) | 0.47 ppb (6) | 59.8 μg/m3 (54) | 20.3 μg/m3 (69) | 69.0 | |
| April 19, 2021, 6 a.m. | 29.7 ppb (29) | 3.5 ppb (4) | N/A | 26.0 ppb (25) | N/A | N/A | 6.0 ppb (6) | 0.6 ppb (7) | 72.7 μg/m3 (60) | 12.9 μg/m3 (53) | 60.0 | |
| April 19, 2021, 5 a.m. | 29.6 ppb (28) | 3.2 ppb (4) | N/A | 27.0 ppb (26) | N/A | N/A | 10.0 ppb (10) | 0.44 ppb (5) | 69.2 μg/m3 (59) | 16.1 μg/m3 (60) | 60.0 | |
| April 19, 2021, 4 a.m. | 14.2 ppb (14) | 1.3 ppb (2) | N/A | 13.0 ppb (13) | N/A | N/A | 29.0 ppb (27) | 0.33 ppb (4) | 51.0 μg/m3 (48) | 10.1 μg/m3 (43) | 48.0 | |
| April 19, 2021, 3 a.m. | 6.9 ppb (7) | 0.7 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 45.0 ppb (42) | 0.25 ppb (3) | 50.0 μg/m3 (47) | 8.1 μg/m3 (34) | 47.0 | |
| April 19, 2021, 2 a.m. | 4.4 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 51.0 ppb (48) | 0.2 ppb (3) | 53.9 μg/m3 (50) | 3.7 μg/m3 (16) | 50.0 | |
| April 19, 2021, 1 a.m. | 0.9 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 57.0 ppb (58) | 0.13 ppb (2) | 30.3 μg/m3 (29) | 1.5 μg/m3 (7) | 58.0 | |
| April 19, 2021, midnight | 0.5 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 59.0 ppb (65) | 0.12 ppb (2) | 22.1 μg/m3 (21) | 4.5 μg/m3 (19) | 65.0 | |
| April 18, 2021, 11 p.m. | 0.7 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 59.0 ppb (65) | 0.13 ppb (2) | 26.4 μg/m3 (25) | 4.2 μg/m3 (18) | 65.0 | |
| April 18, 2021, 10 p.m. | 0.5 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 58.0 ppb (61) | 0.12 ppb (2) | 39.4 μg/m3 (37) | 5.2 μg/m3 (22) | 61.0 | |
| April 18, 2021, 9 p.m. | 0.9 ppb (1) | 0.5 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 56.0 ppb (55) | 0.12 ppb (2) | 57.1 μg/m3 (53) | 8.8 μg/m3 (37) | 55.0 | |
| April 18, 2021, 8 p.m. | 0.8 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 55.0 ppb (51) | 0.12 ppb (2) | 106.5 μg/m3 (77) | 6.9 μg/m3 (29) | 77.0 | |
| April 18, 2021, 7 p.m. | 0.8 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 52.0 ppb (49) | 0.12 ppb (2) | 54.2 μg/m3 (51) | 5.2 μg/m3 (22) | 51.0 | |
| April 18, 2021, 6 p.m. | 0.7 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 50.0 ppb (47) | 0.12 ppb (2) | 64.8 μg/m3 (56) | 5.4 μg/m3 (23) | 56.0 | |
| April 18, 2021, 5 p.m. | 0.7 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 48.0 ppb (45) | 0.12 ppb (2) | 60.0 μg/m3 (54) | 4.7 μg/m3 (20) | 54.0 | |
| April 18, 2021, 4 p.m. | 1.3 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | 0.12 ppb (2) | 65.8 μg/m3 (57) | 4.2 μg/m3 (18) | 57.0 | |
| April 18, 2021, 3 p.m. | 1.7 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | 0.11 ppb (2) | 73.6 μg/m3 (61) | 7.4 μg/m3 (31) | 61.0 | |
| April 18, 2021, 2 p.m. | 2.8 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 42.0 ppb (39) | 0.12 ppb (2) | 43.1 μg/m3 (40) | 9.3 μg/m3 (39) | 40.0 | |
| April 18, 2021, 1 p.m. | 28.5 ppb (27) | 5.1 ppb (5) | N/A | 23.0 ppb (22) | N/A | N/A | 7.0 ppb (7) | 0.47 ppb (6) | 66.1 μg/m3 (57) | 23.0 μg/m3 (74) | 74.0 | |
| April 18, 2021, noon | 29.7 ppb (29) | 8.3 ppb (8) | N/A | 22.0 ppb (21) | N/A | N/A | 3.0 ppb (3) | 0.55 ppb (7) | 51.5 μg/m3 (48) | 27.1 μg/m3 (83) | 83.0 | |
| April 18, 2021, 11 a.m. | 33.0 ppb (32) | 11.0 ppb (11) | N/A | 22.0 ppb (21) | N/A | N/A | 1.0 ppb (1) | 0.53 ppb (6) | 59.6 μg/m3 (54) | 22.8 μg/m3 (74) | 74.0 | |
| April 18, 2021, 10 a.m. | 29.7 ppb (29) | 8.6 ppb (9) | N/A | 21.0 ppb (20) | N/A | N/A | 3.0 ppb (3) | 0.52 ppb (6) | 65.6 μg/m3 (57) | 28.3 μg/m3 (86) | 86.0 | |
| April 18, 2021, 9 a.m. | 26.1 ppb (25) | 2.6 ppb (3) | N/A | 24.0 ppb (23) | N/A | N/A | 6.0 ppb (6) | 0.54 ppb (6) | 57.1 μg/m3 (53) | 26.3 μg/m3 (81) | 81.0 | |
| April 18, 2021, 8 a.m. | 28.9 ppb (28) | 4.1 ppb (4) | N/A | 25.0 ppb (24) | N/A | N/A | 3.0 ppb (3) | 0.61 ppb (7) | 68.1 μg/m3 (58) | 30.5 μg/m3 (90) | 90.0 | |
| April 18, 2021, 7 a.m. | 26.2 ppb (25) | 1.9 ppb (2) | N/A | 24.0 ppb (23) | N/A | N/A | 9.0 ppb (9) | 0.56 ppb (7) | 67.3 μg/m3 (58) | 15.9 μg/m3 (59) | 59.0 | |
| April 18, 2021, 6 a.m. | 23.6 ppb (23) | 1.3 ppb (2) | N/A | 22.0 ppb (21) | N/A | N/A | 12.0 ppb (12) | 0.52 ppb (6) | 71.7 μg/m3 (60) | 26.6 μg/m3 (82) | 82.0 | |
| April 18, 2021, 5 a.m. | 16.4 ppb (16) | 0.6 ppb (1) | N/A | 16.0 ppb (16) | N/A | N/A | 24.0 ppb (23) | 0.44 ppb (5) | 71.4 μg/m3 (60) | 26.8 μg/m3 (82) | 82.0 | |
| April 18, 2021, 4 a.m. | 12.5 ppb (12) | 0.7 ppb (1) | N/A | 12.0 ppb (12) | N/A | N/A | 38.0 ppb (36) | 0.33 ppb (4) | 58.6 μg/m3 (53) | 22.8 μg/m3 (74) | 74.0 | |
| April 18, 2021, 3 a.m. | 10.2 ppb (10) | 0.7 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 47.0 ppb (44) | 0.29 ppb (4) | 66.3 μg/m3 (57) | 22.3 μg/m3 (73) | 73.0 | |
| April 18, 2021, 2 a.m. | 7.1 ppb (7) | 0.5 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 57.0 ppb (58) | 0.26 ppb (4) | 71.4 μg/m3 (60) | 22.0 μg/m3 (72) | 72.0 | |
| April 18, 2021, 1 a.m. | 6.0 ppb (6) | 0.5 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 64.0 ppb (81) | 0.23 ppb (3) | 66.8 μg/m3 (57) | 21.8 μg/m3 (72) | 81.0 | |
| April 18, 2021, midnight | 5.7 ppb (6) | 0.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 68.0 ppb (94) | 0.21 ppb (3) | 66.3 μg/m3 (57) | 18.9 μg/m3 (66) | 94.0 | |
| April 17, 2021, 11 p.m. | 5.9 ppb (6) | 0.8 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 70.0 ppb (100) | 0.23 ppb (3) | 78.8 μg/m3 (63) | 19.1 μg/m3 (66) | 100.0 | |
| April 17, 2021, 10 p.m. | 4.5 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 73.0 ppb (103) | 0.22 ppb (3) | 73.4 μg/m3 (61) | 19.6 μg/m3 (67) | 103.0 | |
| April 17, 2021, 9 p.m. | 4.0 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 70.0 ppb (100) | 0.21 ppb (3) | 66.1 μg/m3 (57) | 18.1 μg/m3 (64) | 100.0 | |
| April 17, 2021, 8 p.m. | 3.6 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 61.0 ppb (71) | 0.2 ppb (3) | 69.3 μg/m3 (59) | 17.4 μg/m3 (63) | 71.0 | |
| April 17, 2021, 7 p.m. | 4.5 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 55.0 ppb (51) | 0.2 ppb (3) | 53.9 μg/m3 (50) | 20.5 μg/m3 (69) | 69.0 | |
| April 17, 2021, 6 p.m. | 5.8 ppb (6) | 1.7 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 47.0 ppb (44) | 0.21 ppb (3) | 60.0 μg/m3 (54) | 23.0 μg/m3 (74) | 74.0 | |
| April 17, 2021, 5 p.m. | 5.5 ppb (6) | 1.7 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 41.0 ppb (38) | 0.2 ppb (3) | 48.6 μg/m3 (45) | 18.1 μg/m3 (64) | 64.0 | |
| April 17, 2021, 4 p.m. | 6.8 ppb (7) | 2.1 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | 36.0 ppb (34) | 0.2 ppb (3) | 38.4 μg/m3 (36) | 21.5 μg/m3 (71) | 71.0 | |
| April 17, 2021, 3 p.m. | 5.3 ppb (5) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 33.0 ppb (31) | 0.18 ppb (3) | 34.8 μg/m3 (33) | 14.2 μg/m3 (56) | 56.0 | |
| April 17, 2021, 2 p.m. | 9.2 ppb (9) | 1.6 ppb (2) | N/A | 8.0 ppb (8) | N/A | N/A | 27.0 ppb (25) | 0.21 ppb (3) | 40.8 μg/m3 (38) | 13.4 μg/m3 (54) | 54.0 | |
| April 17, 2021, 1 p.m. | 14.8 ppb (14) | 1.5 ppb (2) | N/A | 13.0 ppb (13) | N/A | N/A | 11.0 ppb (11) | 0.26 ppb (4) | 56.9 μg/m3 (52) | 13.9 μg/m3 (55) | 55.0 | |
| April 17, 2021, noon | 12.5 ppb (12) | 0.9 ppb (1) | N/A | 12.0 ppb (12) | N/A | N/A | 12.0 ppb (12) | 0.26 ppb (4) | 35.8 μg/m3 (34) | 14.6 μg/m3 (57) | 57.0 | |
| April 17, 2021, 11 a.m. | 8.9 ppb (9) | 0.5 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 16.0 ppb (15) | 0.24 ppb (3) | 39.1 μg/m3 (37) | 13.4 μg/m3 (54) | 54.0 | |
| April 17, 2021, 10 a.m. | 9.1 ppb (9) | 1.4 ppb (2) | N/A | 8.0 ppb (8) | N/A | N/A | 18.0 ppb (17) | 0.25 ppb (3) | 42.1 μg/m3 (39) | 11.5 μg/m3 (48) | 48.0 | |
| April 17, 2021, 9 a.m. | 9.6 ppb (10) | 0.5 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | 18.0 ppb (17) | 0.25 ppb (3) | 44.1 μg/m3 (41) | 17.9 μg/m3 (64) | 64.0 | |
| April 17, 2021, 8 a.m. | 10.5 ppb (10) | 0.8 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 20.0 ppb (19) | 0.25 ppb (3) | 52.0 μg/m3 (49) | 20.3 μg/m3 (69) | 69.0 | |
| April 17, 2021, 7 a.m. | 10.2 ppb (10) | 0.5 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 25.0 ppb (24) | 0.25 ppb (3) | 46.5 μg/m3 (44) | 18.3 μg/m3 (65) | 65.0 | |
| April 17, 2021, 6 a.m. | 10.5 ppb (10) | 0.5 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 27.0 ppb (25) | 0.24 ppb (3) | 52.5 μg/m3 (49) | 23.7 μg/m3 (76) | 76.0 | |
| April 17, 2021, 5 a.m. | 10.2 ppb (10) | 0.5 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 32.0 ppb (30) | 0.23 ppb (3) | 51.8 μg/m3 (48) | 17.1 μg/m3 (62) | 62.0 | |
| April 17, 2021, 4 a.m. | 9.6 ppb (10) | 0.5 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | 35.0 ppb (33) | 0.22 ppb (3) | 54.7 μg/m3 (51) | 15.6 μg/m3 (59) | 59.0 | |
| April 17, 2021, 3 a.m. | 10.0 ppb (10) | 0.7 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | 39.0 ppb (37) | 0.21 ppb (3) | 48.2 μg/m3 (45) | 16.4 μg/m3 (61) | 61.0 | |
| April 17, 2021, 2 a.m. | 8.2 ppb (8) | 0.4 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 47.0 ppb (44) | 0.22 ppb (3) | 66.5 μg/m3 (57) | 15.6 μg/m3 (59) | 59.0 | |
| April 17, 2021, 1 a.m. | 7.0 ppb (7) | 0.7 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 55.0 ppb (51) | 0.21 ppb (3) | 63.9 μg/m3 (56) | 18.4 μg/m3 (65) | 65.0 | |
| April 17, 2021, midnight | 7.1 ppb (7) | 1.1 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | 58.0 ppb (61) | 0.2 ppb (3) | 64.1 μg/m3 (56) | 18.9 μg/m3 (66) | 66.0 | |
| April 16, 2021, 11 p.m. | 3.6 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 64.0 ppb (81) | 0.18 ppb (3) | 54.0 μg/m3 (50) | 14.6 μg/m3 (57) | 81.0 | |
| April 16, 2021, 10 p.m. | 3.7 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 66.0 ppb (87) | 0.18 ppb (3) | 69.7 μg/m3 (59) | 15.1 μg/m3 (58) | 87.0 | |
| April 16, 2021, 9 p.m. | 5.6 ppb (6) | 0.7 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 72.0 ppb (102) | 0.23 ppb (3) | 73.4 μg/m3 (61) | 19.8 μg/m3 (68) | 102.0 | |
| April 16, 2021, 8 p.m. | 5.8 ppb (6) | 0.9 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 67.0 ppb (91) | 0.22 ppb (3) | 57.6 μg/m3 (53) | 20.8 μg/m3 (70) | 91.0 | |
| April 16, 2021, 7 p.m. | 5.8 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 61.0 ppb (71) | 0.2 ppb (3) | 56.9 μg/m3 (52) | 16.1 μg/m3 (60) | 71.0 | |
| April 16, 2021, 6 p.m. | 9.2 ppb (9) | 2.0 ppb (2) | N/A | 7.0 ppb (7) | N/A | N/A | 55.0 ppb (51) | 0.21 ppb (3) | 64.6 μg/m3 (56) | 24.4 μg/m3 (77) | 77.0 | |
| April 16, 2021, 5 p.m. | 14.1 ppb (14) | 3.6 ppb (4) | N/A | 11.0 ppb (11) | N/A | N/A | 44.0 ppb (41) | 0.24 ppb (3) | 62.5 μg/m3 (55) | 26.3 μg/m3 (81) | 81.0 | |
| April 16, 2021, 4 p.m. | 20.7 ppb (20) | 6.8 ppb (7) | N/A | 14.0 ppb (14) | N/A | N/A | 32.0 ppb (30) | 0.29 ppb (4) | 62.7 μg/m3 (55) | 34.2 μg/m3 (98) | 98.0 | |
| April 16, 2021, 3 p.m. | 27.6 ppb (27) | 10.3 ppb (10) | N/A | 17.0 ppb (17) | N/A | N/A | 20.0 ppb (19) | 0.33 ppb (4) | 66.1 μg/m3 (57) | 28.0 μg/m3 (85) | 85.0 | |
| April 16, 2021, 2 p.m. | 58.8 ppb (57) | 36.3 ppb (35) | N/A | 23.0 ppb (22) | N/A | N/A | 7.0 ppb (7) | 0.52 ppb (6) | 70.2 μg/m3 (59) | 20.8 μg/m3 (70) | 70.0 | |
| April 16, 2021, 1 p.m. | 51.0 ppb (49) | 34.4 ppb (33) | N/A | 17.0 ppb (17) | N/A | N/A | 1.0 ppb (1) | 0.61 ppb (7) | 77.6 μg/m3 (63) | 22.3 μg/m3 (73) | 73.0 | |
| April 16, 2021, noon | 29.8 ppb (29) | 12.1 ppb (12) | N/A | 18.0 ppb (17) | N/A | N/A | 1.0 ppb (1) | 0.48 ppb (6) | 43.1 μg/m3 (40) | 14.4 μg/m3 (56) | 56.0 | |
| April 16, 2021, 11 a.m. | 21.1 ppb (20) | 5.1 ppb (5) | N/A | 16.0 ppb (16) | N/A | N/A | 5.0 ppb (5) | 0.34 ppb (4) | 44.3 μg/m3 (42) | 14.4 μg/m3 (56) | 56.0 | |
| April 16, 2021, 10 a.m. | 15.7 ppb (15) | 1.7 ppb (2) | N/A | 14.0 ppb (14) | N/A | N/A | 8.0 ppb (8) | 0.28 ppb (4) | 44.8 μg/m3 (42) | 13.4 μg/m3 (54) | 54.0 | |
| April 16, 2021, 9 a.m. | 12.2 ppb (12) | 0.9 ppb (1) | N/A | 11.0 ppb (11) | N/A | N/A | 11.0 ppb (11) | 0.29 ppb (4) | 45.1 μg/m3 (42) | 18.6 μg/m3 (65) | 65.0 | |
| April 16, 2021, 8 a.m. | 9.1 ppb (9) | 0.4 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | 19.0 ppb (18) | 0.26 ppb (4) | 45.3 μg/m3 (42) | 10.6 μg/m3 (45) | 45.0 | |
| April 16, 2021, 7 a.m. | 11.2 ppb (11) | 0.8 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 21.0 ppb (20) | 0.25 ppb (3) | 50.3 μg/m3 (47) | 9.4 μg/m3 (40) | 47.0 | |
| April 16, 2021, 6 a.m. | 14.7 ppb (14) | 0.8 ppb (1) | N/A | 14.0 ppb (14) | N/A | N/A | 19.0 ppb (18) | 0.28 ppb (4) | 57.4 μg/m3 (53) | 17.9 μg/m3 (64) | 64.0 | |
| April 16, 2021, 5 a.m. | 7.9 ppb (8) | 0.5 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 34.0 ppb (32) | 0.2 ppb (3) | 45.0 μg/m3 (42) | 14.4 μg/m3 (56) | 56.0 | |
| April 16, 2021, 4 a.m. | 8.0 ppb (8) | 0.4 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 37.0 ppb (35) | 0.21 ppb (3) | 46.2 μg/m3 (43) | 16.6 μg/m3 (61) | 61.0 | |
| April 16, 2021, 3 a.m. | 8.2 ppb (8) | 0.6 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 41.0 ppb (38) | 0.21 ppb (3) | 50.5 μg/m3 (47) | 14.6 μg/m3 (57) | 57.0 | |
| April 16, 2021, 2 a.m. | 7.7 ppb (8) | 0.5 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 45.0 ppb (42) | 0.2 ppb (3) | 57.1 μg/m3 (53) | 14.6 μg/m3 (57) | 57.0 | |
| April 16, 2021, 1 a.m. | 7.2 ppb (7) | 0.8 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 50.0 ppb (47) | 0.2 ppb (3) | 73.6 μg/m3 (61) | 16.3 μg/m3 (60) | 61.0 | |
| April 16, 2021, midnight | 6.1 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 56.0 ppb (55) | 0.19 ppb (3) | 74.6 μg/m3 (61) | 16.8 μg/m3 (61) | 61.0 | |
| April 15, 2021, 11 p.m. | 5.2 ppb (5) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 61.0 ppb (71) | 0.19 ppb (3) | 72.4 μg/m3 (60) | 18.8 μg/m3 (66) | 71.0 | |
| April 15, 2021, 10 p.m. | 4.2 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 66.0 ppb (87) | 0.2 ppb (3) | 75.8 μg/m3 (62) | 12.9 μg/m3 (53) | 87.0 | |
| April 15, 2021, 9 p.m. | 4.3 ppb (5) | 0.7 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 66.0 ppb (87) | 0.2 ppb (3) | 88.0 μg/m3 (68) | 20.8 μg/m3 (70) | 87.0 | |
| April 15, 2021, 8 p.m. | 3.3 ppb (4) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 62.0 ppb (74) | 0.17 ppb (3) | 48.7 μg/m3 (46) | 17.4 μg/m3 (63) | 74.0 | |
| April 15, 2021, 7 p.m. | 3.7 ppb (4) | 1.1 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 56.0 ppb (55) | 0.18 ppb (3) | 47.4 μg/m3 (44) | 17.1 μg/m3 (62) | 62.0 | |
| April 15, 2021, 6 p.m. | 4.8 ppb (5) | 1.4 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 51.0 ppb (48) | 0.16 ppb (3) | 45.3 μg/m3 (42) | 9.3 μg/m3 (39) | 48.0 | |
| April 15, 2021, 5 p.m. | 4.4 ppb (5) | 1.3 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 48.0 ppb (45) | 0.16 ppb (3) | N/A | N/A | 45.0 | |
| April 15, 2021, 4 p.m. | 5.0 ppb (5) | 1.4 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 44.0 ppb (41) | 0.14 ppb (2) | N/A | N/A | 41.0 | |
| April 15, 2021, 3 p.m. | 14.4 ppb (14) | 4.3 ppb (5) | N/A | 10.0 ppb (10) | N/A | N/A | 32.0 ppb (30) | 0.19 ppb (3) | 42.6 μg/m3 (40) | 16.3 μg/m3 (60) | 60.0 | |
| April 15, 2021, 2 p.m. | 33.8 ppb (32) | 13.7 ppb (13) | N/A | 20.0 ppb (19) | N/A | N/A | 13.0 ppb (13) | 0.36 ppb (5) | 60.5 μg/m3 (54) | 19.1 μg/m3 (66) | 66.0 | |
| April 15, 2021, 1 p.m. | 42.6 ppb (41) | 18.8 ppb (18) | N/A | 24.0 ppb (23) | N/A | N/A | 3.0 ppb (3) | 0.57 ppb (7) | 47.2 μg/m3 (44) | 8.1 μg/m3 (34) | 44.0 | |
| April 15, 2021, noon | 15.8 ppb (15) | 1.6 ppb (2) | N/A | 14.0 ppb (14) | N/A | N/A | 15.0 ppb (14) | 0.27 ppb (4) | 27.8 μg/m3 (26) | 9.8 μg/m3 (41) | 41.0 | |
| April 15, 2021, 11 a.m. | 7.0 ppb (7) | 0.6 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 25.0 ppb (24) | 0.17 ppb (3) | 32.0 μg/m3 (30) | 10.8 μg/m3 (46) | 46.0 | |
| April 15, 2021, 10 a.m. | 6.4 ppb (7) | 0.7 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 28.0 ppb (26) | 0.15 ppb (2) | 35.3 μg/m3 (33) | 11.5 μg/m3 (48) | 48.0 | |
| April 15, 2021, 9 a.m. | 3.2 ppb (4) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 36.0 ppb (34) | 0.15 ppb (2) | 26.6 μg/m3 (25) | 11.0 μg/m3 (46) | 46.0 | |
| April 15, 2021, 8 a.m. | 2.3 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 41.0 ppb (38) | 0.13 ppb (2) | 33.8 μg/m3 (32) | 16.1 μg/m3 (60) | 60.0 | |
| April 15, 2021, 7 a.m. | 3.3 ppb (4) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 41.0 ppb (38) | 0.13 ppb (2) | 32.0 μg/m3 (30) | 21.8 μg/m3 (72) | 72.0 | |
| April 15, 2021, 6 a.m. | 3.3 ppb (4) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 41.0 ppb (38) | 0.12 ppb (2) | 27.4 μg/m3 (26) | 6.9 μg/m3 (29) | 38.0 | |
| April 15, 2021, 5 a.m. | 4.1 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 42.0 ppb (39) | 0.13 ppb (2) | 36.5 μg/m3 (34) | 9.1 μg/m3 (38) | 39.0 | |
| April 15, 2021, 4 a.m. | 3.4 ppb (4) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 43.0 ppb (40) | 0.13 ppb (2) | 34.8 μg/m3 (33) | 19.1 μg/m3 (66) | 66.0 | |
| April 15, 2021, 3 a.m. | 2.7 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 45.0 ppb (42) | 0.12 ppb (2) | 30.0 μg/m3 (28) | 11.5 μg/m3 (48) | 48.0 | |
| April 15, 2021, 2 a.m. | 2.2 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 48.0 ppb (45) | 0.13 ppb (2) | 42.6 μg/m3 (40) | 11.0 μg/m3 (46) | 46.0 | |
| April 15, 2021, 1 a.m. | 2.6 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 49.0 ppb (46) | 0.12 ppb (2) | 49.6 μg/m3 (46) | 9.8 μg/m3 (41) | 46.0 | |
| April 15, 2021, midnight | 2.0 ppb (2) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 52.0 ppb (49) | 0.13 ppb (2) | 41.3 μg/m3 (39) | 10.3 μg/m3 (43) | 49.0 | |
| April 14, 2021, 11 p.m. | 1.9 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 56.0 ppb (55) | 0.13 ppb (2) | 45.0 μg/m3 (42) | 12.7 μg/m3 (53) | 55.0 | |
| April 14, 2021, 10 p.m. | 1.9 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 60.0 ppb (68) | 0.13 ppb (2) | 34.3 μg/m3 (32) | 12.4 μg/m3 (52) | 68.0 | |
| April 14, 2021, 9 p.m. | 1.7 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 60.0 ppb (68) | 0.14 ppb (2) | 37.6 μg/m3 (35) | 11.3 μg/m3 (48) | 68.0 | |
| April 14, 2021, 8 p.m. | 2.4 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 58.0 ppb (61) | 0.13 ppb (2) | 30.5 μg/m3 (29) | 12.7 μg/m3 (53) | 61.0 | |
| April 14, 2021, 7 p.m. | 2.6 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 53.0 ppb (50) | 0.1 ppb (2) | 30.3 μg/m3 (29) | 13.7 μg/m3 (55) | 55.0 |