Boulder City (Industrial Rd) NV, US: 35.978149, -114.846313
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 1, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 8.3 μg/m3 (8) | N/A | 32.0 | |
| March 1, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 6.9 μg/m3 (7) | N/A | 32.0 | |
| March 1, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 4.6 μg/m3 (5) | N/A | 35.0 | |
| March 1, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 6.0 μg/m3 (6) | N/A | 37.0 | |
| March 1, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 6.6 μg/m3 (7) | N/A | 35.0 | |
| March 1, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 5.6 μg/m3 (6) | N/A | 37.0 | |
| March 1, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 5.8 μg/m3 (6) | N/A | 37.0 | |
| March 1, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 7.8 μg/m3 (8) | N/A | 37.0 | |
| March 1, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 6.5 μg/m3 (7) | N/A | 37.0 | |
| March 1, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 10.0 μg/m3 (10) | N/A | 38.0 | |
| March 1, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 5.1 μg/m3 (5) | N/A | 38.0 | |
| March 1, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 3.1 μg/m3 (3) | N/A | 39.0 | |
| March 1, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 3.7 μg/m3 (4) | N/A | 39.0 | |
| March 1, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 5.6 μg/m3 (6) | N/A | 38.0 | |
| March 1, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 5.8 μg/m3 (6) | N/A | 40.0 | |
| March 1, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 3.4 μg/m3 (4) | N/A | 40.0 | |
| Feb. 28, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 3.8 μg/m3 (4) | N/A | 40.0 | |
| Feb. 28, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 3.6 μg/m3 (4) | N/A | 40.0 | |
| Feb. 28, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 5.5 μg/m3 (6) | N/A | 40.0 | |
| Feb. 28, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 3.8 μg/m3 (4) | N/A | 40.0 | |
| Feb. 28, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 3.6 μg/m3 (4) | N/A | 39.0 | |
| Feb. 28, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 5.4 μg/m3 (5) | N/A | 39.0 | |
| Feb. 28, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 4.1 μg/m3 (4) | N/A | 39.0 | |
| Feb. 28, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 5.5 μg/m3 (6) | N/A | 39.0 | |
| Feb. 28, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 5.3 μg/m3 (5) | N/A | 39.0 | |
| Feb. 28, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 4.6 μg/m3 (5) | N/A | 39.0 | |
| Feb. 28, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 4.3 μg/m3 (4) | N/A | 38.0 | |
| Feb. 28, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 3.7 μg/m3 (4) | N/A | 39.0 | |
| Feb. 28, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 4.2 μg/m3 (4) | N/A | 39.0 | |
| Feb. 28, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 4.3 μg/m3 (4) | N/A | 40.0 | |
| Feb. 28, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 8.4 μg/m3 (8) | N/A | 41.0 | |
| Feb. 28, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 7.6 μg/m3 (8) | N/A | 41.0 | |
| Feb. 28, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 10.0 μg/m3 (10) | N/A | 42.0 | |
| Feb. 28, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 9.9 μg/m3 (10) | N/A | 41.0 | |
| Feb. 28, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 11.3 μg/m3 (11) | N/A | 41.0 | |
| Feb. 28, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 7.0 μg/m3 (7) | N/A | 42.0 | |
| Feb. 28, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | 5.6 μg/m3 (6) | N/A | 43.0 | |
| Feb. 28, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | 8.3 μg/m3 (8) | N/A | 43.0 | |
| Feb. 28, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 9.8 μg/m3 (10) | N/A | 41.0 | |
| Feb. 28, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 8.4 μg/m3 (8) | N/A | 42.0 | |
| Feb. 27, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 7.3 μg/m3 (7) | N/A | 42.0 | |
| Feb. 27, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | 6.6 μg/m3 (7) | N/A | 43.0 | |
| Feb. 27, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | 11.0 μg/m3 (11) | N/A | 43.0 | |
| Feb. 27, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | 8.3 μg/m3 (8) | N/A | 43.0 | |
| Feb. 27, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 10.8 μg/m3 (10) | N/A | 42.0 | |
| Feb. 27, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 10.6 μg/m3 (10) | N/A | 42.0 | |
| Feb. 27, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 12.0 μg/m3 (12) | N/A | 41.0 | |
| Feb. 27, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 17.7 μg/m3 (17) | N/A | 41.0 | |
| Feb. 27, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 24.7 μg/m3 (23) | N/A | 40.0 | |
| Feb. 27, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 34.0 μg/m3 (32) | N/A | 41.0 | |
| Feb. 27, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 67.4 μg/m3 (58) | N/A | 58.0 | |
| Feb. 27, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 123.5 μg/m3 (85) | N/A | 85.0 | |
| Feb. 27, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 127.0 μg/m3 (87) | N/A | 87.0 | |
| Feb. 27, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 55.1 μg/m3 (52) | N/A | 52.0 | |
| Feb. 27, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 31.8 μg/m3 (30) | N/A | 39.0 | |
| Feb. 27, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 15.7 μg/m3 (15) | N/A | 34.0 | |
| Feb. 27, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 18.9 μg/m3 (18) | N/A | 34.0 | |
| Feb. 27, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 10.4 μg/m3 (10) | N/A | 39.0 | |
| Feb. 27, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 11.2 μg/m3 (11) | N/A | 38.0 | |
| Feb. 27, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 10.8 μg/m3 (10) | N/A | 36.0 | |
| Feb. 27, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 11.5 μg/m3 (11) | N/A | 40.0 | |
| Feb. 27, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 9.5 μg/m3 (9) | N/A | 38.0 | |
| Feb. 27, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 12.5 μg/m3 (12) | N/A | 41.0 | |
| Feb. 27, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 8.1 μg/m3 (8) | N/A | 42.0 | |
| Feb. 26, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 12.0 μg/m3 (12) | N/A | 42.0 | |
| Feb. 26, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 11.4 μg/m3 (11) | N/A | 42.0 | |
| Feb. 26, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 10.8 μg/m3 (10) | N/A | 40.0 | |
| Feb. 26, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 12.2 μg/m3 (12) | N/A | 35.0 | |
| Feb. 26, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 13.0 μg/m3 (13) | N/A | 32.0 | |
| Feb. 26, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 14.3 μg/m3 (14) | N/A | 29.0 | |
| Feb. 26, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 13.4 μg/m3 (13) | N/A | 27.0 | |
| Feb. 26, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 17.2 μg/m3 (16) | N/A | 23.0 | |
| Feb. 26, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 11.2 μg/m3 (11) | N/A | 28.0 | |
| Feb. 26, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 22.0 μg/m3 (21) | N/A | 30.0 | |
| Feb. 26, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 9.3 μg/m3 (9) | N/A | 31.0 | |
| Feb. 26, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 4.7 μg/m3 (5) | N/A | 36.0 | |
| Feb. 26, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 4.4 μg/m3 (5) | N/A | 37.0 | |
| Feb. 26, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 6.1 μg/m3 (6) | N/A | 37.0 | |
| Feb. 26, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 4.2 μg/m3 (4) | N/A | 37.0 | |
| Feb. 26, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 4.9 μg/m3 (5) | N/A | 38.0 | |
| Feb. 26, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 5.9 μg/m3 (6) | N/A | 38.0 | |
| Feb. 26, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 8.6 μg/m3 (8) | N/A | 37.0 | |
| Feb. 26, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 4.4 μg/m3 (5) | N/A | 38.0 | |
| Feb. 26, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 5.3 μg/m3 (5) | N/A | 39.0 | |
| Feb. 26, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 5.5 μg/m3 (6) | N/A | 38.0 | |
| Feb. 26, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 11.0 μg/m3 (11) | N/A | 38.0 | |
| Feb. 26, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 7.5 μg/m3 (7) | N/A | 40.0 | |
| Feb. 26, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | 6.1 μg/m3 (6) | N/A | 44.0 | |
| Feb. 25, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | 5.7 μg/m3 (6) | N/A | 44.0 | |
| Feb. 25, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | 5.3 μg/m3 (5) | N/A | 44.0 | |
| Feb. 25, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | 7.8 μg/m3 (8) | N/A | 43.0 | |
| Feb. 25, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 9.8 μg/m3 (10) | N/A | 42.0 | |
| Feb. 25, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 8.5 μg/m3 (8) | N/A | 42.0 | |
| Feb. 25, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 8.2 μg/m3 (8) | N/A | 41.0 | |
| Feb. 25, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| Feb. 25, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| Feb. 25, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | N/A | 39.0 | |
| Feb. 25, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 7.7 μg/m3 (8) | N/A | 39.0 | |
| Feb. 25, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 7.4 μg/m3 (7) | N/A | 39.0 | |
| Feb. 25, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 8.3 μg/m3 (8) | N/A | 39.0 | |
| Feb. 25, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 13.5 μg/m3 (13) | N/A | 39.0 | |
| Feb. 25, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 12.6 μg/m3 (12) | N/A | 39.0 | |
| Feb. 25, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 22.9 μg/m3 (22) | N/A | 39.0 | |
| Feb. 25, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 28.8 μg/m3 (27) | N/A | 39.0 | |
| Feb. 25, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 22.0 μg/m3 (21) | N/A | 41.0 | |
| Feb. 25, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | 26.6 μg/m3 (25) | N/A | 45.0 | |
| Feb. 25, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | 60.6 μg/m3 (54) | N/A | 54.0 | |
| Feb. 25, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 79.9 μg/m3 (64) | N/A | 64.0 | |
| Feb. 25, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 129.7 μg/m3 (88) | N/A | 88.0 | |
| Feb. 25, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | 62.5 μg/m3 (55) | N/A | 55.0 | |
| Feb. 25, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 56.7 μg/m3 (52) | N/A | 52.0 | |
| Feb. 25, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | 13.3 μg/m3 (13) | N/A | 43.0 | |
| Feb. 24, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | 17.7 μg/m3 (17) | N/A | 44.0 | |
| Feb. 24, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | 13.6 μg/m3 (13) | N/A | 43.0 | |
| Feb. 24, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | 11.7 μg/m3 (11) | N/A | 43.0 | |
| Feb. 24, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 10.8 μg/m3 (10) | N/A | 40.0 | |
| Feb. 24, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | N/A | 37.0 | |
| Feb. 24, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 13.4 μg/m3 (13) | N/A | 34.0 | |
| Feb. 24, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 14.0 μg/m3 (13) | N/A | 29.0 | |
| Feb. 24, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 27.0 | |
| Feb. 24, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | N/A | 34.0 | |
| Feb. 24, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 7.8 μg/m3 (8) | N/A | 37.0 | |
| Feb. 24, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 4.9 μg/m3 (5) | N/A | 38.0 | |
| Feb. 24, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 5.8 μg/m3 (6) | N/A | 38.0 | |
| Feb. 24, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 5.8 μg/m3 (6) | N/A | 40.0 | |
| Feb. 24, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 7.5 μg/m3 (7) | N/A | 38.0 | |
| Feb. 24, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 7.4 μg/m3 (7) | N/A | 37.0 | |
| Feb. 24, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 5.0 μg/m3 (5) | N/A | 41.0 | |
| Feb. 24, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 6.3 μg/m3 (6) | N/A | 41.0 | |
| Feb. 24, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 9.7 μg/m3 (9) | N/A | 41.0 | |
| Feb. 24, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 12.3 μg/m3 (12) | N/A | 33.0 | |
| Feb. 24, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 10.9 μg/m3 (11) | N/A | 36.0 | |
| Feb. 24, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 9.0 μg/m3 (9) | N/A | 38.0 | |
| Feb. 24, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 13.0 μg/m3 (13) | N/A | 36.0 | |
| Feb. 24, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 11.9 μg/m3 (12) | N/A | 33.0 | |
| Feb. 24, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 9.7 μg/m3 (9) | N/A | 39.0 | |
| Feb. 23, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 9.8 μg/m3 (10) | N/A | 39.0 | |
| Feb. 23, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 11.4 μg/m3 (11) | N/A | 39.0 | |
| Feb. 23, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 9.7 μg/m3 (9) | N/A | 37.0 | |
| Feb. 23, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 11.1 μg/m3 (11) | N/A | 34.0 | |
| Feb. 23, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 10.4 μg/m3 (10) | N/A | 31.0 | |
| Feb. 23, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 14.1 μg/m3 (14) | N/A | 26.0 | |
| Feb. 23, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 19.0 μg/m3 (18) | N/A | 25.0 | |
| Feb. 23, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 12.4 μg/m3 (12) | N/A | 25.0 | |
| Feb. 23, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 8.8 μg/m3 (9) | N/A | 27.0 | |
| Feb. 23, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 10.1 μg/m3 (10) | N/A | 30.0 | |
| Feb. 23, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 9.3 μg/m3 (9) | N/A | 28.0 | |
| Feb. 23, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 8.4 μg/m3 (8) | N/A | 31.0 | |
| Feb. 23, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 8.0 μg/m3 (8) | N/A | 29.0 | |
| Feb. 23, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 6.8 μg/m3 (7) | N/A | 31.0 | |
| Feb. 23, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 8.9 μg/m3 (9) | N/A | 31.0 | |
| Feb. 23, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.8 μg/m3 (10) | N/A | 10.0 | |
| Feb. 23, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 10.7 μg/m3 (10) | N/A | 30.0 | |
| Feb. 23, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 8.6 μg/m3 (8) | N/A | 32.0 | |
| Feb. 23, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 11.9 μg/m3 (12) | N/A | 31.0 | |
| Feb. 23, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 8.9 μg/m3 (9) | N/A | 34.0 | |
| Feb. 23, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 5.2 μg/m3 (5) | N/A | 34.0 | |
| Feb. 23, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 5.8 μg/m3 (6) | N/A | 33.0 | |
| Feb. 23, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 9.1 μg/m3 (9) | N/A | 37.0 | |
| Feb. 23, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 3.7 μg/m3 (4) | N/A | 38.0 | |
| Feb. 22, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 6.0 μg/m3 (6) | N/A | 38.0 | |
| Feb. 22, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 7.0 μg/m3 (7) | N/A | 38.0 | |
| Feb. 22, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 4.7 μg/m3 (5) | N/A | 38.0 | |
| Feb. 22, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 5.0 μg/m3 (5) | N/A | 38.0 | |
| Feb. 22, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 7.1 μg/m3 (7) | N/A | 37.0 | |
| Feb. 22, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 7.3 μg/m3 (7) | N/A | 37.0 | |
| Feb. 22, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 3.9 μg/m3 (4) | N/A | 37.0 | |
| Feb. 22, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 9.1 μg/m3 (9) | N/A | 36.0 |