Bear (Red Lion Rd) DE, US: 39.5511, -75.7308
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 27, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 42.0 ppb (39) | N/A | N/A | 4.4 μg/m3 (19) | 39.0 | |
| Feb. 27, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 43.0 ppb (40) | N/A | N/A | 4.1 μg/m3 (18) | 40.0 | |
| Feb. 27, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 41.0 ppb (38) | N/A | N/A | 4.2 μg/m3 (18) | 38.0 | |
| Feb. 27, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 41.0 ppb (38) | N/A | N/A | 4.2 μg/m3 (18) | 38.0 | |
| Feb. 26, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 42.0 ppb (39) | N/A | N/A | 3.8 μg/m3 (16) | 39.0 | |
| Feb. 26, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 43.0 ppb (40) | N/A | N/A | 3.8 μg/m3 (16) | 40.0 | |
| Feb. 26, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 3.5 μg/m3 (15) | 41.0 | |
| Feb. 26, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 45.0 ppb (42) | N/A | N/A | 4.2 μg/m3 (18) | 42.0 | |
| Feb. 26, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 5.0 μg/m3 (21) | 41.0 | |
| Feb. 26, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 5.1 μg/m3 (22) | 41.0 | |
| Feb. 26, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 5.3 μg/m3 (23) | 23.0 | |
| Feb. 26, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 42.0 ppb (39) | N/A | N/A | 5.5 μg/m3 (23) | 39.0 | |
| Feb. 26, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 5.3 μg/m3 (23) | 23.0 | |
| Feb. 26, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Feb. 26, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 7.2 μg/m3 (31) | 31.0 | |
| Feb. 26, 2021, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 7.9 μg/m3 (33) | 33.0 | |
| Feb. 26, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 7.8 μg/m3 (33) | 33.0 | |
| Feb. 26, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 6.5 μg/m3 (28) | 28.0 | |
| Feb. 26, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Feb. 26, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.6 μg/m3 (24) | 24.0 | |
| Feb. 26, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.6 μg/m3 (24) | 24.0 | |
| Feb. 26, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| Feb. 26, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.9 μg/m3 (21) | 21.0 | |
| Feb. 26, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.7 μg/m3 (24) | 24.0 | |
| Feb. 26, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.1 μg/m3 (22) | 22.0 | |
| Feb. 26, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| Feb. 26, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 26, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| Feb. 25, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| Feb. 25, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 25, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 4.6 μg/m3 (20) | 20.0 | |
| Feb. 25, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 4.9 μg/m3 (21) | 21.0 | |
| Feb. 25, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 25, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.8 μg/m3 (25) | 25.0 | |
| Feb. 25, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.3 μg/m3 (23) | 23.0 | |
| Feb. 25, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Feb. 25, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.1 μg/m3 (18) | 18.0 | |
| Feb. 25, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 3.5 μg/m3 (15) | 15.0 | |
| Feb. 25, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 3.3 μg/m3 (14) | 14.0 | |
| Feb. 25, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.9 μg/m3 (21) | 21.0 | |
| Feb. 25, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 7.8 μg/m3 (33) | 33.0 | |
| Feb. 25, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 8.6 μg/m3 (36) | 36.0 | |
| Feb. 25, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 7.5 μg/m3 (32) | 32.0 | |
| Feb. 25, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 5.5 μg/m3 (23) | 23.0 | |
| Feb. 25, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Feb. 25, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 5.1 μg/m3 (22) | 22.0 | |
| Feb. 25, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| Feb. 25, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Feb. 25, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Feb. 25, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 4.5 μg/m3 (19) | 19.0 | |
| Feb. 25, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 4.6 μg/m3 (20) | 20.0 | |
| Feb. 25, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 4.5 μg/m3 (19) | 19.0 | |
| Feb. 24, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 4.1 μg/m3 (18) | 18.0 | |
| Feb. 24, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 3.9 μg/m3 (17) | 17.0 | |
| Feb. 24, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 3.5 μg/m3 (15) | 15.0 | |
| Feb. 24, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 3.2 μg/m3 (14) | 14.0 | |
| Feb. 24, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 3.5 μg/m3 (15) | 15.0 | |
| Feb. 24, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | N/A | 2.0 | |
| Feb. 24, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | N/A | 2.0 | |
| Feb. 24, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 5.4 μg/m3 (23) | 23.0 | |
| Feb. 24, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 6.6 μg/m3 (28) | 28.0 | |
| Feb. 24, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Feb. 24, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 7.1 μg/m3 (30) | 30.0 | |
| Feb. 24, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.6 μg/m3 (24) | 24.0 | |
| Feb. 24, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 24, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.8 μg/m3 (20) | 20.0 | |
| Feb. 24, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Feb. 24, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Feb. 24, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.5 μg/m3 (19) | 19.0 | |
| Feb. 24, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.5 μg/m3 (19) | 19.0 | |
| Feb. 24, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Feb. 24, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.8 μg/m3 (20) | 20.0 | |
| Feb. 24, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Feb. 24, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Feb. 24, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 9.7 μg/m3 (41) | 41.0 | |
| Feb. 24, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 11.8 μg/m3 (50) | 50.0 | |
| Feb. 23, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 6.7 μg/m3 (28) | 28.0 | |
| Feb. 23, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 5.8 μg/m3 (25) | 25.0 | |
| Feb. 23, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.3 μg/m3 (23) | 23.0 | |
| Feb. 23, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 5.6 μg/m3 (24) | 24.0 | |
| Feb. 23, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 6.3 μg/m3 (27) | 27.0 | |
| Feb. 23, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.3 μg/m3 (27) | 27.0 | |
| Feb. 23, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.9 μg/m3 (29) | 29.0 | |
| Feb. 23, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 7.5 μg/m3 (32) | 32.0 | |
| Feb. 23, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Feb. 23, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 9.7 μg/m3 (41) | 41.0 | |
| Feb. 23, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 11.1 μg/m3 (47) | 47.0 | |
| Feb. 23, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 11.6 μg/m3 (49) | 49.0 | |
| Feb. 23, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 10.5 μg/m3 (44) | 44.0 | |
| Feb. 23, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 10.6 μg/m3 (45) | 45.0 | |
| Feb. 23, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Feb. 23, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 10.9 μg/m3 (46) | 46.0 | |
| Feb. 23, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 12.5 μg/m3 (52) | 52.0 | |
| Feb. 23, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 14.1 μg/m3 (56) | 56.0 | |
| Feb. 23, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 14.4 μg/m3 (56) | 56.0 | |
| Feb. 23, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 14.5 μg/m3 (57) | 57.0 | |
| Feb. 23, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 14.3 μg/m3 (56) | 56.0 | |
| Feb. 23, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 14.7 μg/m3 (57) | 57.0 | |
| Feb. 23, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 13.9 μg/m3 (55) | 55.0 | |
| Feb. 23, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 12.6 μg/m3 (53) | 53.0 | |
| Feb. 22, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 9.8 μg/m3 (41) | 41.0 | |
| Feb. 22, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 7.6 μg/m3 (32) | 32.0 | |
| Feb. 22, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 7.1 μg/m3 (30) | 30.0 | |
| Feb. 22, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 7.1 μg/m3 (30) | 30.0 | |
| Feb. 22, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 7.5 μg/m3 (32) | 32.0 | |
| Feb. 22, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 8.4 μg/m3 (36) | 36.0 | |
| Feb. 22, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 9.6 μg/m3 (40) | 40.0 | |
| Feb. 22, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Feb. 22, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 8.9 μg/m3 (38) | 38.0 | |
| Feb. 22, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 10.7 μg/m3 (45) | 45.0 | |
| Feb. 22, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| Feb. 22, 2021, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 12.8 μg/m3 (53) | 53.0 | |
| Feb. 22, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 11.3 μg/m3 (48) | 48.0 | |
| Feb. 22, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 11.3 μg/m3 (48) | 48.0 | |
| Feb. 22, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 12.2 μg/m3 (52) | 52.0 | |
| Feb. 22, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 12.1 μg/m3 (51) | 51.0 | |
| Feb. 22, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 11.9 μg/m3 (50) | 50.0 | |
| Feb. 22, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 12.5 μg/m3 (52) | 52.0 | |
| Feb. 22, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | N/A | 12.3 μg/m3 (52) | 52.0 | |
| Feb. 22, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 39.0 ppb (37) | N/A | N/A | 12.9 μg/m3 (53) | 53.0 | |
| Feb. 22, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 36.0 ppb (34) | N/A | N/A | 14.4 μg/m3 (56) | 56.0 | |
| Feb. 22, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 34.0 ppb (32) | N/A | N/A | 14.3 μg/m3 (56) | 56.0 | |
| Feb. 22, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 31.0 ppb (29) | N/A | N/A | 13.8 μg/m3 (55) | 55.0 | |
| Feb. 22, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 30.0 ppb (28) | N/A | N/A | 13.5 μg/m3 (54) | 54.0 | |
| Feb. 21, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 40.0 ppb (38) | N/A | N/A | 12.7 μg/m3 (53) | 53.0 | |
| Feb. 21, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 47.0 ppb (44) | N/A | N/A | 11.2 μg/m3 (47) | 47.0 | |
| Feb. 21, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 51.0 ppb (48) | N/A | N/A | 10.2 μg/m3 (43) | 48.0 | |
| Feb. 21, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 51.0 ppb (48) | N/A | N/A | 10.4 μg/m3 (44) | 48.0 | |
| Feb. 21, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 51.0 ppb (48) | N/A | N/A | 11.7 μg/m3 (49) | 49.0 | |
| Feb. 21, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 51.0 ppb (48) | N/A | N/A | 13.3 μg/m3 (54) | 54.0 | |
| Feb. 21, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 49.0 ppb (46) | N/A | N/A | 13.5 μg/m3 (54) | 54.0 | |
| Feb. 21, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 47.0 ppb (44) | N/A | N/A | 12.3 μg/m3 (52) | 52.0 | |
| Feb. 21, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 46.0 ppb (43) | N/A | N/A | 13.3 μg/m3 (54) | 54.0 | |
| Feb. 21, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 44.0 ppb (41) | N/A | N/A | 17.8 μg/m3 (63) | 63.0 | |
| Feb. 21, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 41.0 ppb (38) | N/A | N/A | 21.5 μg/m3 (71) | 71.0 | |
| Feb. 21, 2021, noon | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 40.0 ppb (38) | N/A | N/A | 22.9 μg/m3 (74) | 74.0 | |
| Feb. 21, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 40.0 ppb (38) | N/A | N/A | 23.4 μg/m3 (75) | 75.0 | |
| Feb. 21, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 40.0 ppb (38) | N/A | N/A | 23.4 μg/m3 (75) | 75.0 | |
| Feb. 21, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 41.0 ppb (38) | N/A | N/A | 23.6 μg/m3 (76) | 76.0 | |
| Feb. 21, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 42.0 ppb (39) | N/A | N/A | 23.3 μg/m3 (75) | 75.0 | |
| Feb. 21, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 42.0 ppb (39) | N/A | N/A | 22.8 μg/m3 (74) | 74.0 | |
| Feb. 21, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 42.0 ppb (39) | N/A | N/A | 22.9 μg/m3 (74) | 74.0 | |
| Feb. 21, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 42.0 ppb (39) | N/A | N/A | 22.4 μg/m3 (73) | 73.0 | |
| Feb. 21, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 43.0 ppb (40) | N/A | N/A | 19.8 μg/m3 (68) | 68.0 | |
| Feb. 21, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 19.3 μg/m3 (67) | 67.0 | |
| Feb. 21, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 17.6 μg/m3 (63) | 63.0 | |
| Feb. 21, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 17.9 μg/m3 (64) | 64.0 | |
| Feb. 21, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 17.5 μg/m3 (63) | 63.0 | |
| Feb. 20, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 45.0 ppb (42) | N/A | N/A | 17.8 μg/m3 (63) | 63.0 | |
| Feb. 20, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 47.0 ppb (44) | N/A | N/A | 18.7 μg/m3 (65) | 65.0 | |
| Feb. 20, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 50.0 ppb (47) | N/A | N/A | 19.3 μg/m3 (67) | 67.0 | |
| Feb. 20, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 51.0 ppb (48) | N/A | N/A | 16.4 μg/m3 (61) | 61.0 | |
| Feb. 20, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 52.0 ppb (49) | N/A | N/A | 14.3 μg/m3 (56) | 56.0 | |
| Feb. 20, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 51.0 ppb (48) | N/A | N/A | 14.1 μg/m3 (56) | 56.0 | |
| Feb. 20, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 50.0 ppb (47) | N/A | N/A | 17.1 μg/m3 (62) | 62.0 | |
| Feb. 20, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 48.0 ppb (45) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| Feb. 20, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 48.0 ppb (45) | N/A | N/A | 15.4 μg/m3 (58) | 58.0 | |
| Feb. 20, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (5) | 47.0 ppb (44) | N/A | N/A | 15.6 μg/m3 (59) | 59.0 | |
| Feb. 20, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (5) | 42.0 ppb (39) | N/A | N/A | 14.9 μg/m3 (57) | 57.0 | |
| Feb. 20, 2021, noon | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 37.0 ppb (35) | N/A | N/A | 16.1 μg/m3 (60) | 60.0 | |
| Feb. 20, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (5) | 35.0 ppb (33) | N/A | N/A | 15.8 μg/m3 (59) | 59.0 | |
| Feb. 20, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (6) | 34.0 ppb (32) | N/A | N/A | 14.5 μg/m3 (57) | 57.0 | |
| Feb. 20, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (5) | 36.0 ppb (34) | N/A | N/A | 13.4 μg/m3 (54) | 54.0 | |
| Feb. 20, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 39.0 ppb (37) | N/A | N/A | 12.5 μg/m3 (52) | 52.0 | |
| Feb. 20, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 40.0 ppb (38) | N/A | N/A | 11.9 μg/m3 (50) | 50.0 | |
| Feb. 20, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 38.0 ppb (36) | N/A | N/A | 10.8 μg/m3 (46) | 46.0 | |
| Feb. 20, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 32.0 ppb (30) | N/A | N/A | 13.3 μg/m3 (54) | 54.0 | |
| Feb. 20, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (29) | N/A | N/A | 16.7 μg/m3 (61) | 61.0 |