Yellowstone National Park (82190) WY, US: 44.373056, -110.830833
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| July 15, 2020, 11 p.m. | 1.0 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.1 μg/m3 (0) | 1.0 | |
| July 15, 2020, 10 p.m. | 0.8 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.7 μg/m3 (3) | 3.0 | |
| July 15, 2020, 9 p.m. | 2.5 ppb (2) | 1.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.7 μg/m3 (7) | 7.0 | |
| July 15, 2020, 8 p.m. | 1.2 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.1 μg/m3 (9) | 9.0 | |
| July 15, 2020, 7 p.m. | 2.1 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.5 μg/m3 (10) | 10.0 | |
| July 15, 2020, 6 p.m. | 2.1 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.2 μg/m3 (9) | 9.0 | |
| July 15, 2020, 5 p.m. | 1.6 ppb (1) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.9 μg/m3 (12) | 12.0 | |
| July 15, 2020, 4 p.m. | 2.1 ppb (2) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.5 μg/m3 (6) | 6.0 | |
| July 15, 2020, 3 p.m. | 2.2 ppb (2) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.9 μg/m3 (8) | 8.0 | |
| July 15, 2020, 2 p.m. | 2.5 ppb (2) | 1.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.4 μg/m3 (14) | 14.0 | |
| July 15, 2020, 1 p.m. | 7.6 ppb (7) | 4.0 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 1.8 μg/m3 (8) | 8.0 | |
| July 15, 2020, noon | 2.2 ppb (2) | 1.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.9 μg/m3 (8) | 8.0 | |
| July 15, 2020, 11 a.m. | -0.2 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.7 μg/m3 (3) | 3.0 | |
| July 15, 2020, 10 a.m. | -0.2 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.5 μg/m3 (2) | 2.0 | |
| July 15, 2020, 9 a.m. | 1.9 ppb (2) | 1.7 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 3.4 μg/m3 (14) | 14.0 | |
| July 15, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.5 μg/m3 (15) | 15.0 | |
| July 15, 2020, 7 a.m. | -0.2 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 15, 2020, 6 a.m. | -0.2 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.4 μg/m3 (10) | 10.0 | |
| July 15, 2020, 5 a.m. | 0.3 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.5 μg/m3 (6) | 6.0 | |
| July 15, 2020, 4 a.m. | 0.7 ppb (1) | 0.3 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.5 μg/m3 (2) | 2.0 | |
| July 15, 2020, 3 a.m. | 1.9 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -0.4 μg/m3 (0) | 2.0 | |
| July 15, 2020, 2 a.m. | 3.0 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | -0.5 μg/m3 (0) | 3.0 | |
| July 15, 2020, 1 a.m. | 0.0 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.2 μg/m3 (1) | 1.0 | |
| July 15, 2020, midnight | 0.0 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.2 μg/m3 (5) | 5.0 | |
| July 14, 2020, 11 p.m. | 1.8 ppb (2) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.1 μg/m3 (9) | 9.0 | |
| July 14, 2020, 10 p.m. | 1.4 ppb (1) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.0 | |
| July 14, 2020, 9 p.m. | 0.8 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 1.0 | |
| July 14, 2020, 8 p.m. | 1.3 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.9 μg/m3 (8) | 8.0 | |
| July 14, 2020, 7 p.m. | 0.3 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 14, 2020, 6 p.m. | 1.0 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.5 μg/m3 (6) | 6.0 | |
| July 14, 2020, 5 p.m. | 1.1 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.7 μg/m3 (7) | 7.0 | |
| July 14, 2020, 4 p.m. | 0.5 ppb (0) | 0.2 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.9 μg/m3 (12) | 12.0 | |
| July 14, 2020, 3 p.m. | 0.2 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 5.4 μg/m3 (23) | 23.0 | |
| July 14, 2020, 2 p.m. | 46.4 ppb (43) | 36.6 ppb (34) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 43.0 | |
| July 14, 2020, 1 p.m. | 4.2 ppb (4) | 2.8 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -0.1 μg/m3 (0) | 4.0 | |
| July 14, 2020, noon | 2.0 ppb (2) | 1.9 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.4 μg/m3 (6) | 6.0 | |
| July 14, 2020, 11 a.m. | 0.3 ppb (0) | 0.4 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 4.4 μg/m3 (18) | 18.0 | |
| July 14, 2020, 10 a.m. | 0.0 ppb (0) | 0.2 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 3.7 μg/m3 (15) | 15.0 | |
| July 14, 2020, 9 a.m. | 0.0 ppb (0) | 0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.8 μg/m3 (8) | 8.0 | |
| July 14, 2020, 8 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.9 μg/m3 (8) | 8.0 | |
| July 14, 2020, 7 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 14, 2020, 6 a.m. | 0.1 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.5 μg/m3 (6) | 6.0 | |
| July 14, 2020, 5 a.m. | 0.5 ppb (0) | 0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -0.2 μg/m3 (0) | N/A | |
| July 14, 2020, 4 a.m. | 2.0 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.9 μg/m3 (12) | 12.0 | |
| July 14, 2020, 3 a.m. | 2.6 ppb (2) | 1.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.9 μg/m3 (16) | 16.0 | |
| July 14, 2020, 2 a.m. | 5.0 ppb (5) | 2.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 2.7 μg/m3 (11) | 11.0 | |
| July 14, 2020, 1 a.m. | 5.0 ppb (5) | 1.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 1.2 μg/m3 (5) | 5.0 | |
| July 14, 2020, midnight | 4.4 ppb (4) | 1.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 0.5 μg/m3 (2) | 4.0 | |
| July 13, 2020, 11 p.m. | 3.9 ppb (4) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 1.4 μg/m3 (6) | 6.0 | |
| July 13, 2020, 10 p.m. | 1.9 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.2 μg/m3 (5) | 5.0 | |
| July 13, 2020, 9 p.m. | 1.6 ppb (1) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.7 μg/m3 (7) | 7.0 | |
| July 13, 2020, 8 p.m. | 2.5 ppb (2) | 1.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.5 μg/m3 (6) | 6.0 | |
| July 13, 2020, 7 p.m. | 2.3 ppb (2) | 1.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.2 μg/m3 (5) | 5.0 | |
| July 13, 2020, 6 p.m. | 1.6 ppb (1) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 13, 2020, 5 p.m. | 2.4 ppb (2) | 1.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.1 μg/m3 (13) | 13.0 | |
| July 13, 2020, 4 p.m. | 1.2 ppb (1) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.4 μg/m3 (14) | 14.0 | |
| July 13, 2020, 3 p.m. | 2.1 ppb (2) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.3 μg/m3 (1) | 2.0 | |
| July 13, 2020, 2 p.m. | 6.5 ppb (6) | 3.4 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | -0.4 μg/m3 (0) | 6.0 | |
| July 13, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -0.5 μg/m3 (0) | N/A | |
| July 13, 2020, noon | 1.3 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.9 μg/m3 (4) | 4.0 | |
| July 13, 2020, 11 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -1.9 μg/m3 (0) | N/A | |
| July 13, 2020, 10 a.m. | -0.1 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -2.2 μg/m3 (0) | N/A | |
| July 13, 2020, 9 a.m. | -0.1 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 5.7 μg/m3 (24) | 24.0 | |
| July 13, 2020, 8 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 13, 2020, 7 a.m. | 0.2 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.1 μg/m3 (9) | 9.0 | |
| July 13, 2020, 6 a.m. | 0.0 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 13, 2020, 5 a.m. | 0.0 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.7 μg/m3 (3) | 3.0 | |
| July 13, 2020, 4 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.7 μg/m3 (3) | 3.0 | |
| July 13, 2020, 3 a.m. | 1.2 ppb (1) | 0.6 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.2 μg/m3 (5) | 5.0 | |
| July 13, 2020, 2 a.m. | 1.0 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.9 μg/m3 (12) | 12.0 | |
| July 13, 2020, 1 a.m. | 0.6 ppb (1) | 0.2 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.2 μg/m3 (9) | 9.0 | |
| July 13, 2020, midnight | 1.4 ppb (1) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 12, 2020, 11 p.m. | 1.6 ppb (1) | 1.3 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.5 μg/m3 (10) | 10.0 | |
| July 12, 2020, 10 p.m. | 0.9 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.4 μg/m3 (18) | 18.0 | |
| July 12, 2020, 9 p.m. | 1.7 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.3 μg/m3 (18) | 18.0 | |
| July 12, 2020, 8 p.m. | 1.6 ppb (1) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.1 μg/m3 (9) | 9.0 | |
| July 12, 2020, 7 p.m. | 2.3 ppb (2) | 1.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.1 μg/m3 (17) | 17.0 | |
| July 12, 2020, 6 p.m. | 2.2 ppb (2) | 1.1 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 | |
| July 12, 2020, 5 p.m. | 0.6 ppb (1) | 0.2 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 12, 2020, 4 p.m. | 1.4 ppb (1) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.5 μg/m3 (2) | 2.0 | |
| July 12, 2020, 3 p.m. | 0.2 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.7 μg/m3 (7) | 7.0 | |
| July 12, 2020, 2 p.m. | 4.3 ppb (4) | 1.5 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 3.4 μg/m3 (14) | 14.0 | |
| July 12, 2020, 1 p.m. | 4.1 ppb (4) | 1.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 12, 2020, noon | 2.9 ppb (3) | 1.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 2.5 μg/m3 (10) | 10.0 | |
| July 12, 2020, 11 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.5 μg/m3 (2) | 2.0 | |
| July 12, 2020, 10 a.m. | -0.1 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.4 μg/m3 (6) | 6.0 | |
| July 12, 2020, 9 a.m. | -0.3 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.5 μg/m3 (6) | 6.0 | |
| July 12, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | N/A | |
| July 12, 2020, 7 a.m. | -0.1 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.2 μg/m3 (1) | 1.0 | |
| July 12, 2020, 6 a.m. | -0.1 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.7 μg/m3 (3) | 3.0 | |
| July 12, 2020, 5 a.m. | 0.9 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.7 μg/m3 (11) | 11.0 | |
| July 12, 2020, 4 a.m. | 2.0 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 2.5 μg/m3 (10) | 10.0 | |
| July 12, 2020, 3 a.m. | 6.2 ppb (6) | 3.9 ppb (4) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | -0.6 μg/m3 (0) | 6.0 | |
| July 12, 2020, 2 a.m. | 3.2 ppb (3) | 1.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 0.7 μg/m3 (3) | 3.0 | |
| July 12, 2020, 1 a.m. | 0.3 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.5 μg/m3 (2) | 2.0 | |
| July 12, 2020, midnight | 0.9 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.6 μg/m3 (2) | 2.0 | |
| July 11, 2020, 11 p.m. | 1.0 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.9 μg/m3 (4) | 4.0 | |
| July 11, 2020, 10 p.m. | 0.7 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -1.9 μg/m3 (0) | 1.0 | |
| July 11, 2020, 9 p.m. | 1.5 ppb (1) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -2.9 μg/m3 (0) | 1.0 | |
| July 11, 2020, 8 p.m. | 0.7 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -1.6 μg/m3 (0) | 1.0 | |
| July 11, 2020, 7 p.m. | 0.9 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.0 | |
| July 11, 2020, 6 p.m. | 1.3 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -0.4 μg/m3 (0) | 1.0 | |
| July 11, 2020, 5 p.m. | 0.6 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.2 μg/m3 (1) | 1.0 | |
| July 11, 2020, 4 p.m. | 0.7 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.7 μg/m3 (7) | 7.0 | |
| July 11, 2020, 3 p.m. | 2.0 ppb (2) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.2 μg/m3 (9) | 9.0 | |
| July 11, 2020, 2 p.m. | 1.4 ppb (1) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.5 μg/m3 (2) | 2.0 | |
| July 11, 2020, 1 p.m. | 2.6 ppb (2) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 0.2 μg/m3 (1) | 2.0 | |
| July 11, 2020, noon | 2.5 ppb (2) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.2 μg/m3 (1) | 2.0 | |
| July 11, 2020, 11 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -0.4 μg/m3 (0) | N/A | |
| July 11, 2020, 10 a.m. | 0.0 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | N/A | |
| July 11, 2020, 9 a.m. | 0.0 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 3.6 μg/m3 (15) | 15.0 | |
| July 11, 2020, 8 a.m. | 8.3 ppb (8) | 4.8 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 6.4 μg/m3 (27) | 27.0 | |
| July 11, 2020, 7 a.m. | 1.1 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.1 μg/m3 (9) | 9.0 | |
| July 11, 2020, 6 a.m. | 0.0 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.7 μg/m3 (3) | 3.0 | |
| July 11, 2020, 5 a.m. | 0.5 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.9 μg/m3 (12) | 12.0 | |
| July 11, 2020, 4 a.m. | 1.5 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.4 μg/m3 (14) | 14.0 | |
| July 11, 2020, 3 a.m. | 0.3 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.3 μg/m3 (1) | 1.0 | |
| July 11, 2020, 2 a.m. | 0.6 ppb (1) | 0.4 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.2 μg/m3 (5) | 5.0 | |
| July 11, 2020, 1 a.m. | 0.8 ppb (1) | 0.3 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.2 μg/m3 (9) | 9.0 | |
| July 11, 2020, midnight | 2.2 ppb (2) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.2 μg/m3 (5) | 5.0 | |
| July 10, 2020, 11 p.m. | 1.2 ppb (1) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.4 μg/m3 (10) | 10.0 | |
| July 10, 2020, 10 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 | 4.4 μg/m3 (18) | 18.0 | |
| July 10, 2020, 9 p.m. | 2.8 ppb (3) | 1.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.7 μg/m3 (15) | 15.0 | |
| July 10, 2020, 8 p.m. | 2.1 ppb (2) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.9 μg/m3 (16) | 16.0 | |
| July 10, 2020, 7 p.m. | 2.8 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 6.4 μg/m3 (27) | 27.0 | |
| July 10, 2020, 6 p.m. | 3.1 ppb (3) | 1.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| July 10, 2020, 5 p.m. | 1.3 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.7 μg/m3 (15) | 15.0 | |
| July 10, 2020, 4 p.m. | 1.3 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.5 μg/m3 (15) | 15.0 | |
| July 10, 2020, 3 p.m. | 0.7 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.2 μg/m3 (18) | 18.0 | |
| July 10, 2020, 2 p.m. | 0.7 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.9 μg/m3 (16) | 16.0 | |
| July 10, 2020, 1 p.m. | 1.2 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.3 μg/m3 (1) | 1.0 | |
| July 10, 2020, noon | 1.4 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.0 | |
| July 10, 2020, 11 a.m. | 0.5 ppb (0) | 0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.9 μg/m3 (8) | 8.0 | |
| July 10, 2020, 10 a.m. | -0.2 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 3.4 μg/m3 (14) | 14.0 | |
| July 10, 2020, 9 a.m. | -0.2 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 3.7 μg/m3 (15) | 15.0 | |
| July 10, 2020, 8 a.m. | -0.1 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.5 μg/m3 (10) | 10.0 | |
| July 10, 2020, 7 a.m. | -0.2 ppb (0) | -0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 2.7 μg/m3 (11) | 11.0 | |
| July 10, 2020, 6 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 3.2 μg/m3 (13) | 13.0 | |
| July 10, 2020, 5 a.m. | 0.7 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 10, 2020, 4 a.m. | 0.4 ppb (0) | 0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -1.9 μg/m3 (0) | N/A | |
| July 10, 2020, 3 a.m. | 3.1 ppb (3) | 1.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 1.6 μg/m3 (7) | 7.0 | |
| July 10, 2020, 2 a.m. | 1.3 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 4.9 μg/m3 (20) | 20.0 | |
| July 10, 2020, 1 a.m. | 1.1 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.5 μg/m3 (6) | 6.0 | |
| July 10, 2020, midnight | 1.2 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.7 μg/m3 (3) | 3.0 | |
| July 9, 2020, 11 p.m. | 0.5 ppb (0) | 0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.3 μg/m3 (1) | 1.0 | |
| July 9, 2020, 10 p.m. | 2.1 ppb (2) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.9 μg/m3 (4) | 4.0 | |
| July 9, 2020, 9 p.m. | 2.5 ppb (2) | 1.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.2 μg/m3 (5) | 5.0 | |
| July 9, 2020, 8 p.m. | 2.1 ppb (2) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.4 μg/m3 (6) | 6.0 | |
| July 9, 2020, 7 p.m. | 2.8 ppb (3) | 1.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | -2.3 μg/m3 (0) | 3.0 | |
| July 9, 2020, 6 p.m. | 2.5 ppb (2) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | -0.5 μg/m3 (0) | 2.0 | |
| July 9, 2020, 5 p.m. | 1.3 ppb (1) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.4 μg/m3 (10) | 10.0 | |
| July 9, 2020, 4 p.m. | 1.3 ppb (1) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -0.4 μg/m3 (0) | 1.0 | |
| July 9, 2020, 3 p.m. | 1.5 ppb (1) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.4 μg/m3 (6) | 6.0 | |
| July 9, 2020, 2 p.m. | 1.9 ppb (2) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.4 μg/m3 (6) | 6.0 | |
| July 9, 2020, 1 p.m. | 3.1 ppb (3) | 1.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 0.5 μg/m3 (2) | 3.0 | |
| July 9, 2020, noon | 2.9 ppb (3) | 1.8 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -0.2 μg/m3 (0) | 3.0 | |
| July 9, 2020, 11 a.m. | 0.4 ppb (0) | 0.2 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -0.5 μg/m3 (0) | N/A | |
| July 9, 2020, 10 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 0.9 μg/m3 (4) | 4.0 | |
| July 9, 2020, 9 a.m. | 0.1 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 9, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.5 μg/m3 (2) | 2.0 | |
| July 9, 2020, 7 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -1.2 μg/m3 (0) | N/A | |
| July 9, 2020, 6 a.m. | 0.2 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | -1.2 μg/m3 (0) | N/A | |
| July 9, 2020, 5 a.m. | 0.8 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.9 μg/m3 (8) | 8.0 | |
| July 9, 2020, 4 a.m. | 1.0 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 2.2 μg/m3 (9) | 9.0 | |
| July 9, 2020, 3 a.m. | 0.9 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | -1.1 μg/m3 (0) | 1.0 | |
| July 9, 2020, 2 a.m. | 2.7 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | -0.5 μg/m3 (0) | 3.0 | |
| July 9, 2020, 1 a.m. | 0.8 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.1 μg/m3 (13) | 13.0 | |
| July 9, 2020, midnight | 2.0 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 3.4 μg/m3 (14) | 14.0 |