Gaston (Hurricane Dr) NC, US: 36.511708, -77.655389
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 2, 2021, 6 p.m. | 1.3 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| March 2, 2021, 5 p.m. | 1.4 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| March 2, 2021, 4 p.m. | 1.3 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 2, 2021, 3 p.m. | 1.4 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| March 2, 2021, 2 p.m. | 1.4 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| March 2, 2021, 1 p.m. | 2.2 ppb (3) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -2.0 μg/m3 (0) | 3.0 | |
| March 2, 2021, noon | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| March 2, 2021, 11 a.m. | 0.7 ppb (1) | 0.2 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -3.0 μg/m3 (0) | 1.0 | |
| March 2, 2021, 10 a.m. | 0.6 ppb (1) | 0.2 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 1.0 | |
| March 2, 2021, 9 a.m. | 0.5 ppb (1) | 0.2 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 1.0 | |
| March 2, 2021, 8 a.m. | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 | |
| March 2, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 | |
| March 2, 2021, 6 a.m. | 0.6 ppb (1) | 0.2 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 | |
| March 2, 2021, 5 a.m. | 0.6 ppb (1) | 0.2 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| March 2, 2021, 4 a.m. | 0.6 ppb (1) | 0.2 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| March 2, 2021, 3 a.m. | 0.7 ppb (1) | 0.2 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 2, 2021, 2 a.m. | 0.7 ppb (1) | 0.2 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| March 2, 2021, 1 a.m. | 0.8 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 2, 2021, midnight | 0.7 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.0 | |
| March 1, 2021, 11 p.m. | 0.7 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| March 1, 2021, 10 p.m. | 0.6 ppb (1) | 0.2 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.0 | |
| March 1, 2021, 9 p.m. | 0.5 ppb (1) | 0.2 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 1, 2021, 8 p.m. | 0.7 ppb (1) | 0.2 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| March 1, 2021, 7 p.m. | 0.8 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 | |
| March 1, 2021, 6 p.m. | 0.7 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.0 | |
| March 1, 2021, 5 p.m. | 1.0 ppb (1) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 1, 2021, 4 p.m. | 1.1 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 2.0 | |
| March 1, 2021, 3 p.m. | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -3.0 μg/m3 (0) | 2.0 | |
| March 1, 2021, 2 p.m. | 0.7 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -4.0 μg/m3 (0) | 1.0 | |
| March 1, 2021, 1 p.m. | 0.6 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 1, 2021, noon | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 1, 2021, 11 a.m. | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 1, 2021, 10 a.m. | 0.9 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 1, 2021, 9 a.m. | 0.8 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| March 1, 2021, 8 a.m. | 0.8 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| March 1, 2021, 7 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 | |
| March 1, 2021, 6 a.m. | 0.9 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| March 1, 2021, 5 a.m. | 2.8 ppb (3) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 1, 2021, 4 a.m. | 5.1 ppb (5) | 0.4 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| March 1, 2021, 3 a.m. | 2.0 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 1, 2021, 2 a.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| March 1, 2021, 1 a.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| March 1, 2021, midnight | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 28, 2021, 11 p.m. | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Feb. 28, 2021, 10 p.m. | 0.9 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| Feb. 28, 2021, 9 p.m. | 0.9 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Feb. 28, 2021, 8 p.m. | 1.3 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Feb. 28, 2021, 7 p.m. | 1.5 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Feb. 28, 2021, 6 p.m. | 1.5 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Feb. 28, 2021, 5 p.m. | 5.5 ppb (6) | 1.7 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| Feb. 28, 2021, 4 p.m. | 4.0 ppb (4) | 1.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 28, 2021, 3 p.m. | 1.3 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Feb. 28, 2021, 2 p.m. | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Feb. 28, 2021, 1 p.m. | 1.3 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Feb. 28, 2021, noon | 1.8 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Feb. 28, 2021, 11 a.m. | 2.4 ppb (3) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Feb. 28, 2021, 10 a.m. | 2.4 ppb (3) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Feb. 28, 2021, 9 a.m. | 3.1 ppb (3) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Feb. 28, 2021, 8 a.m. | 3.8 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Feb. 28, 2021, 7 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 | |
| Feb. 28, 2021, 6 a.m. | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 28, 2021, 5 a.m. | 0.8 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 28, 2021, 4 a.m. | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Feb. 28, 2021, 3 a.m. | 1.6 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 28, 2021, 2 a.m. | 0.9 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 28, 2021, 1 a.m. | 0.9 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 28, 2021, midnight | 0.8 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Feb. 27, 2021, 11 p.m. | 0.9 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Feb. 27, 2021, 10 p.m. | 0.9 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 27, 2021, 9 p.m. | 0.7 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Feb. 27, 2021, 8 p.m. | 0.6 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Feb. 27, 2021, 7 p.m. | 0.8 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 27, 2021, 6 p.m. | 0.8 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 27, 2021, 5 p.m. | 0.7 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| Feb. 27, 2021, 4 p.m. | 0.8 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 | |
| Feb. 27, 2021, 3 p.m. | 0.9 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 27, 2021, 2 p.m. | 1.1 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 27, 2021, 1 p.m. | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 2.0 | |
| Feb. 27, 2021, noon | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 27, 2021, 11 a.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| Feb. 27, 2021, 10 a.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| Feb. 27, 2021, 9 a.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| Feb. 27, 2021, 8 a.m. | 0.7 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| Feb. 27, 2021, 7 a.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 | |
| Feb. 27, 2021, 6 a.m. | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.0 | |
| Feb. 27, 2021, 5 a.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 27, 2021, 4 a.m. | 1.8 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 2.0 | |
| Feb. 27, 2021, 3 a.m. | 2.7 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 27, 2021, 2 a.m. | 2.3 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| Feb. 27, 2021, 1 a.m. | 2.6 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Feb. 27, 2021, midnight | 3.4 ppb (4) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| Feb. 26, 2021, 11 p.m. | 3.7 ppb (4) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 26, 2021, 10 p.m. | 2.4 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 | |
| Feb. 26, 2021, 9 p.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| Feb. 26, 2021, 8 p.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| Feb. 26, 2021, 7 p.m. | 1.8 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 | |
| Feb. 26, 2021, 6 p.m. | 2.9 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 26, 2021, 5 p.m. | 2.9 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 | |
| Feb. 26, 2021, 4 p.m. | 2.4 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 26, 2021, 3 p.m. | 2.9 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| Feb. 26, 2021, 2 p.m. | 3.6 ppb (4) | 0.5 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 26, 2021, 1 p.m. | 4.2 ppb (4) | 0.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Feb. 26, 2021, noon | 5.3 ppb (5) | 0.4 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Feb. 26, 2021, 11 a.m. | 5.9 ppb (6) | 0.3 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Feb. 26, 2021, 10 a.m. | 5.6 ppb (6) | 0.3 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 26, 2021, 9 a.m. | 5.7 ppb (6) | 0.2 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 26, 2021, 8 a.m. | 2.7 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 26, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 26, 2021, 6 a.m. | 2.5 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 26, 2021, 5 a.m. | 2.6 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 26, 2021, 4 a.m. | 2.2 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 26, 2021, 3 a.m. | 1.7 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| Feb. 26, 2021, 2 a.m. | 2.0 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 26, 2021, 1 a.m. | 3.7 ppb (4) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| Feb. 26, 2021, midnight | 3.5 ppb (4) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| Feb. 25, 2021, 11 p.m. | 1.9 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 25, 2021, 10 p.m. | 0.9 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 25, 2021, 9 p.m. | 0.6 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| Feb. 25, 2021, 8 p.m. | 0.5 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 25, 2021, 7 p.m. | 0.6 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 25, 2021, 6 p.m. | 0.7 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 25, 2021, 5 p.m. | 1.0 ppb (1) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 25, 2021, 4 p.m. | 1.7 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Feb. 25, 2021, 3 p.m. | 2.4 ppb (3) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 25, 2021, 2 p.m. | 1.2 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Feb. 25, 2021, 1 p.m. | 1.2 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| Feb. 25, 2021, noon | 1.6 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Feb. 25, 2021, 11 a.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Feb. 25, 2021, 10 a.m. | 1.5 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 25, 2021, 9 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 25, 2021, 8 a.m. | 1.3 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Feb. 25, 2021, 7 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 | |
| Feb. 25, 2021, 6 a.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Feb. 25, 2021, 5 a.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 25, 2021, 4 a.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 25, 2021, 3 a.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| Feb. 25, 2021, 2 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| Feb. 25, 2021, 1 a.m. | 1.7 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 2.0 | |
| Feb. 25, 2021, midnight | 2.0 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| Feb. 24, 2021, 11 p.m. | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| Feb. 24, 2021, 10 p.m. | 0.8 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 24, 2021, 9 p.m. | 0.8 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Feb. 24, 2021, 8 p.m. | 0.7 ppb (1) | 0.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| Feb. 24, 2021, 7 p.m. | 0.7 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| Feb. 24, 2021, 6 p.m. | 0.8 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| Feb. 24, 2021, 5 p.m. | 0.8 ppb (1) | 0.4 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 24, 2021, 4 p.m. | 1.1 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Feb. 24, 2021, 3 p.m. | 8.8 ppb (9) | 2.8 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (70) | 70.0 | |
| Feb. 24, 2021, 2 p.m. | 10.8 ppb (11) | 3.2 ppb (4) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (74) | 74.0 | |
| Feb. 24, 2021, 1 p.m. | 14.5 ppb (14) | 6.0 ppb (6) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | -2.0 μg/m3 (0) | 14.0 | |
| Feb. 24, 2021, noon | 3.2 ppb (4) | 1.8 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 24, 2021, 11 a.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 24, 2021, 10 a.m. | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 24, 2021, 9 a.m. | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| Feb. 24, 2021, 8 a.m. | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Feb. 24, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 24, 2021, 6 a.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| Feb. 24, 2021, 5 a.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| Feb. 24, 2021, 4 a.m. | 1.6 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| Feb. 24, 2021, 3 a.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 | |
| Feb. 24, 2021, 2 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Feb. 24, 2021, 1 a.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -2.0 μg/m3 (0) | 2.0 | |
| Feb. 24, 2021, midnight | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -4.0 μg/m3 (0) | 2.0 | |
| Feb. 23, 2021, 11 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 23, 2021, 10 p.m. | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 1.0 | |
| Feb. 23, 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 | |
| Feb. 23, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Feb. 23, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 |