Maryville (Look Rock Tower) TN, US: 35.6322, -83.9422
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 20, 2021, 8 a.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.4 ppb (3) | N/A | N/A | 0.13 ppb (2) | N/A | N/A | 3.0 | |
| April 20, 2021, 7 a.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.4 ppb (3) | N/A | 50.0 ppb (47) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 47.0 | |
| April 20, 2021, 6 a.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.3 ppb (3) | N/A | 49.0 ppb (46) | 0.13 ppb (2) | N/A | 4.0 μg/m3 (17) | 46.0 | |
| April 20, 2021, 5 a.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.3 ppb (3) | N/A | 50.0 ppb (47) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 47.0 | |
| April 20, 2021, 4 a.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.5 ppb (3) | N/A | 50.0 ppb (47) | 0.13 ppb (2) | N/A | 5.0 μg/m3 (21) | 47.0 | |
| April 20, 2021, 3 a.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.5 ppb (3) | N/A | 51.0 ppb (48) | 0.13 ppb (2) | N/A | 5.0 μg/m3 (21) | 48.0 | |
| April 20, 2021, 2 a.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.3 ppb (3) | N/A | 50.0 ppb (47) | 0.13 ppb (2) | N/A | 6.0 μg/m3 (25) | 47.0 | |
| April 20, 2021, 1 a.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.4 ppb (3) | N/A | 50.0 ppb (47) | 0.13 ppb (2) | N/A | 5.0 μg/m3 (21) | 47.0 | |
| April 20, 2021, midnight | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.4 ppb (3) | N/A | 50.0 ppb (47) | 0.13 ppb (2) | N/A | 7.0 μg/m3 (30) | 47.0 | |
| April 19, 2021, 11 p.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.4 ppb (3) | N/A | 50.0 ppb (47) | 0.13 ppb (2) | N/A | 5.0 μg/m3 (21) | 47.0 | |
| April 19, 2021, 10 p.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.3 ppb (3) | N/A | 51.0 ppb (48) | 0.12 ppb (2) | N/A | 5.0 μg/m3 (21) | 48.0 | |
| April 19, 2021, 9 p.m. | N/A | 0.0 ppb (0) | 2.6 ppb (3) | N/A | 2.5 ppb (3) | N/A | 50.0 ppb (47) | 0.13 ppb (2) | N/A | 6.0 μg/m3 (25) | 47.0 | |
| April 19, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 6.0 μg/m3 (25) | 48.0 | |
| April 19, 2021, 7 p.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 2.9 ppb (3) | N/A | 51.0 ppb (48) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 48.0 | |
| April 19, 2021, 6 p.m. | N/A | 0.0 ppb (0) | 2.9 ppb (3) | N/A | 2.8 ppb (3) | N/A | 51.0 ppb (48) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 48.0 | |
| April 19, 2021, 5 p.m. | N/A | 0.1 ppb (1) | 3.3 ppb (4) | N/A | 3.2 ppb (4) | N/A | 49.0 ppb (46) | 0.16 ppb (3) | N/A | 6.0 μg/m3 (25) | 46.0 | |
| April 19, 2021, 4 p.m. | N/A | 0.2 ppb (1) | 3.6 ppb (4) | N/A | 3.3 ppb (4) | N/A | 48.0 ppb (45) | 0.16 ppb (3) | N/A | 7.0 μg/m3 (30) | 45.0 | |
| April 19, 2021, 3 p.m. | N/A | 0.0 ppb (0) | 2.6 ppb (3) | N/A | 2.5 ppb (3) | N/A | 47.0 ppb (44) | 0.15 ppb (2) | N/A | 8.0 μg/m3 (34) | 44.0 | |
| April 19, 2021, 2 p.m. | N/A | 0.1 ppb (1) | 2.4 ppb (3) | N/A | 2.3 ppb (3) | N/A | 44.0 ppb (41) | 0.15 ppb (2) | N/A | 8.0 μg/m3 (34) | 41.0 | |
| April 19, 2021, 1 p.m. | N/A | 0.2 ppb (1) | 2.7 ppb (3) | N/A | 2.4 ppb (3) | N/A | 35.0 ppb (33) | 0.16 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| April 19, 2021, noon | N/A | 0.1 ppb (1) | 2.6 ppb (3) | N/A | 2.4 ppb (3) | N/A | 37.0 ppb (35) | 0.15 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| April 19, 2021, 11 a.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.5 ppb (3) | N/A | 39.0 ppb (37) | 0.15 ppb (2) | N/A | 8.0 μg/m3 (34) | 37.0 | |
| April 19, 2021, 10 a.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.3 ppb (3) | N/A | 35.0 ppb (33) | 0.14 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| April 19, 2021, 9 a.m. | N/A | 0.0 ppb (0) | 2.7 ppb (3) | N/A | 2.7 ppb (3) | N/A | 39.0 ppb (37) | 0.18 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| April 19, 2021, 8 a.m. | N/A | 0.0 ppb (0) | 2.7 ppb (3) | N/A | 2.7 ppb (3) | N/A | 45.0 ppb (42) | 0.16 ppb (3) | N/A | 7.0 μg/m3 (30) | 42.0 | |
| April 19, 2021, 7 a.m. | N/A | 0.0 ppb (0) | 3.3 ppb (4) | N/A | 3.3 ppb (4) | N/A | 42.0 ppb (39) | 0.18 ppb (3) | N/A | 8.0 μg/m3 (34) | 39.0 | |
| April 19, 2021, 6 a.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 41.0 ppb (38) | 0.17 ppb (3) | N/A | 8.0 μg/m3 (34) | 38.0 | |
| April 19, 2021, 5 a.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.5 ppb (3) | N/A | 47.0 ppb (44) | 0.14 ppb (2) | N/A | 8.0 μg/m3 (34) | 44.0 | |
| April 19, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 6.0 μg/m3 (25) | 49.0 | |
| April 19, 2021, 3 a.m. | N/A | 0.0 ppb (0) | 2.8 ppb (3) | N/A | 2.8 ppb (3) | N/A | 51.0 ppb (48) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 48.0 | |
| April 19, 2021, 2 a.m. | N/A | 0.0 ppb (0) | 2.7 ppb (3) | N/A | 2.8 ppb (3) | N/A | 52.0 ppb (49) | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 49.0 | |
| April 19, 2021, 1 a.m. | N/A | 0.0 ppb (0) | 2.9 ppb (3) | N/A | 2.9 ppb (3) | N/A | 51.0 ppb (48) | 0.13 ppb (2) | N/A | 7.0 μg/m3 (30) | 48.0 | |
| April 19, 2021, midnight | N/A | 0.0 ppb (0) | 2.6 ppb (3) | N/A | 2.6 ppb (3) | N/A | 51.0 ppb (48) | 0.13 ppb (2) | N/A | 6.0 μg/m3 (25) | 48.0 | |
| April 18, 2021, 11 p.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.5 ppb (3) | N/A | 51.0 ppb (48) | 0.12 ppb (2) | N/A | 5.0 μg/m3 (21) | 48.0 | |
| April 18, 2021, 10 p.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.4 ppb (3) | N/A | 51.0 ppb (48) | 0.12 ppb (2) | N/A | 5.0 μg/m3 (21) | 48.0 | |
| April 18, 2021, 9 p.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.5 ppb (3) | N/A | 50.0 ppb (47) | 0.14 ppb (2) | N/A | 5.0 μg/m3 (21) | 47.0 | |
| April 18, 2021, 8 p.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.4 ppb (3) | N/A | 49.0 ppb (46) | 0.13 ppb (2) | N/A | 3.0 μg/m3 (13) | 46.0 | |
| April 18, 2021, 7 p.m. | N/A | 0.0 ppb (0) | 2.7 ppb (3) | N/A | 2.6 ppb (3) | N/A | 50.0 ppb (47) | 0.13 ppb (2) | N/A | 4.0 μg/m3 (17) | 47.0 | |
| April 18, 2021, 6 p.m. | N/A | 0.0 ppb (0) | 2.8 ppb (3) | N/A | 2.7 ppb (3) | N/A | 50.0 ppb (47) | 0.13 ppb (2) | N/A | 2.0 μg/m3 (9) | 47.0 | |
| April 18, 2021, 5 p.m. | N/A | 0.0 ppb (0) | 3.2 ppb (4) | N/A | 3.1 ppb (3) | N/A | 47.0 ppb (44) | 0.15 ppb (2) | N/A | 5.0 μg/m3 (21) | 44.0 | |
| April 18, 2021, 4 p.m. | N/A | 0.0 ppb (0) | 3.3 ppb (4) | N/A | 3.2 ppb (4) | N/A | 46.0 ppb (43) | 0.16 ppb (3) | N/A | 6.0 μg/m3 (25) | 43.0 | |
| April 18, 2021, 3 p.m. | N/A | 0.0 ppb (0) | 3.5 ppb (4) | N/A | 3.4 ppb (4) | N/A | 45.0 ppb (42) | 0.15 ppb (2) | N/A | 8.0 μg/m3 (34) | 42.0 | |
| April 18, 2021, 2 p.m. | N/A | 0.0 ppb (0) | 3.4 ppb (4) | N/A | 3.3 ppb (4) | N/A | 44.0 ppb (41) | 0.15 ppb (2) | N/A | 9.0 μg/m3 (38) | 41.0 | |
| April 18, 2021, 1 p.m. | N/A | 0.0 ppb (0) | 3.5 ppb (4) | N/A | 3.4 ppb (4) | N/A | 43.0 ppb (40) | 0.16 ppb (3) | N/A | 8.0 μg/m3 (34) | 40.0 | |
| April 18, 2021, noon | N/A | 0.0 ppb (0) | 3.3 ppb (4) | N/A | 3.3 ppb (4) | N/A | 45.0 ppb (42) | 0.14 ppb (2) | N/A | 8.0 μg/m3 (34) | 42.0 | |
| April 18, 2021, 11 a.m. | N/A | 0.0 ppb (0) | 3.8 ppb (4) | N/A | 3.8 ppb (4) | N/A | 44.0 ppb (41) | 0.15 ppb (2) | N/A | 8.0 μg/m3 (34) | 41.0 | |
| April 18, 2021, 10 a.m. | N/A | 0.0 ppb (0) | 3.1 ppb (3) | N/A | 3.1 ppb (3) | N/A | 45.0 ppb (42) | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 42.0 | |
| April 18, 2021, 9 a.m. | N/A | 0.0 ppb (0) | 3.5 ppb (4) | N/A | 3.5 ppb (4) | N/A | 43.0 ppb (40) | 0.15 ppb (2) | N/A | 7.0 μg/m3 (30) | 40.0 | |
| April 18, 2021, 8 a.m. | N/A | 0.0 ppb (0) | 3.2 ppb (4) | N/A | 3.2 ppb (4) | N/A | 43.0 ppb (40) | 0.14 ppb (2) | N/A | 8.0 μg/m3 (34) | 40.0 | |
| April 18, 2021, 7 a.m. | N/A | 0.0 ppb (0) | 3.5 ppb (4) | N/A | 3.5 ppb (4) | N/A | 45.0 ppb (42) | 0.14 ppb (2) | N/A | 8.0 μg/m3 (34) | 42.0 | |
| April 18, 2021, 6 a.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 44.0 ppb (41) | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 41.0 | |
| April 18, 2021, 5 a.m. | N/A | 0.0 ppb (0) | 2.8 ppb (3) | N/A | 2.8 ppb (3) | N/A | 43.0 ppb (40) | 0.15 ppb (2) | N/A | 7.0 μg/m3 (30) | 40.0 | |
| April 18, 2021, 4 a.m. | N/A | 0.0 ppb (0) | 2.9 ppb (3) | N/A | 2.9 ppb (3) | N/A | 42.0 ppb (39) | 0.16 ppb (3) | N/A | 8.0 μg/m3 (34) | 39.0 | |
| April 18, 2021, 3 a.m. | N/A | 0.0 ppb (0) | 2.7 ppb (3) | N/A | 2.7 ppb (3) | N/A | 42.0 ppb (39) | 0.16 ppb (3) | N/A | 8.0 μg/m3 (34) | 39.0 | |
| April 18, 2021, 2 a.m. | N/A | 0.0 ppb (0) | 2.6 ppb (3) | N/A | 2.6 ppb (3) | N/A | 43.0 ppb (40) | 0.15 ppb (2) | N/A | 7.0 μg/m3 (30) | 40.0 | |
| April 18, 2021, 1 a.m. | N/A | 0.0 ppb (0) | 2.7 ppb (3) | N/A | 2.7 ppb (3) | N/A | 43.0 ppb (40) | 0.15 ppb (2) | N/A | 9.0 μg/m3 (38) | 40.0 | |
| April 18, 2021, midnight | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.5 ppb (3) | N/A | 47.0 ppb (44) | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 44.0 | |
| April 17, 2021, 11 p.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.3 ppb (3) | N/A | 47.0 ppb (44) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 44.0 | |
| April 17, 2021, 10 p.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.3 ppb (3) | N/A | 49.0 ppb (46) | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 46.0 | |
| April 17, 2021, 9 p.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 2.9 ppb (3) | N/A | 50.0 ppb (47) | 0.15 ppb (2) | N/A | 8.0 μg/m3 (34) | 47.0 | |
| April 17, 2021, 8 p.m. | N/A | 0.0 ppb (0) | 3.1 ppb (3) | N/A | 3.1 ppb (3) | N/A | 51.0 ppb (48) | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 48.0 | |
| April 17, 2021, 7 p.m. | N/A | 0.0 ppb (0) | 3.1 ppb (3) | N/A | 3.0 ppb (3) | N/A | 50.0 ppb (47) | 0.15 ppb (2) | N/A | 5.0 μg/m3 (21) | 47.0 | |
| April 17, 2021, 6 p.m. | N/A | 0.1 ppb (1) | 3.0 ppb (3) | N/A | 2.9 ppb (3) | N/A | 46.0 ppb (43) | 0.15 ppb (2) | N/A | 7.0 μg/m3 (30) | 43.0 | |
| April 17, 2021, 5 p.m. | N/A | 0.3 ppb (1) | 3.7 ppb (4) | N/A | 3.4 ppb (4) | N/A | 44.0 ppb (41) | 0.18 ppb (3) | N/A | 8.0 μg/m3 (34) | 41.0 | |
| April 17, 2021, 4 p.m. | N/A | 0.2 ppb (1) | 2.6 ppb (3) | N/A | 2.4 ppb (3) | N/A | 37.0 ppb (35) | 0.18 ppb (3) | N/A | 8.0 μg/m3 (34) | 35.0 | |
| April 17, 2021, 3 p.m. | N/A | 0.1 ppb (1) | 1.9 ppb (2) | N/A | 1.8 ppb (2) | N/A | 31.0 ppb (29) | 0.17 ppb (3) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| April 17, 2021, 2 p.m. | N/A | 0.0 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | N/A | 40.0 ppb (38) | 0.14 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| April 17, 2021, 1 p.m. | N/A | 0.0 ppb (0) | 2.6 ppb (3) | N/A | 2.5 ppb (3) | N/A | 46.0 ppb (43) | 0.15 ppb (2) | N/A | 6.0 μg/m3 (25) | 43.0 | |
| April 17, 2021, noon | N/A | 0.0 ppb (0) | 2.2 ppb (3) | N/A | 2.2 ppb (3) | N/A | 45.0 ppb (42) | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 42.0 | |
| April 17, 2021, 11 a.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.4 ppb (3) | N/A | 45.0 ppb (42) | 0.15 ppb (2) | N/A | 7.0 μg/m3 (30) | 42.0 | |
| April 17, 2021, 10 a.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.3 ppb (3) | N/A | 45.0 ppb (42) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 42.0 | |
| April 17, 2021, 9 a.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.5 ppb (3) | N/A | 46.0 ppb (43) | 0.14 ppb (2) | N/A | 5.0 μg/m3 (21) | 43.0 | |
| April 17, 2021, 8 a.m. | N/A | 0.0 ppb (0) | 2.7 ppb (3) | N/A | 2.7 ppb (3) | N/A | 46.0 ppb (43) | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 43.0 | |
| April 17, 2021, 7 a.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 47.0 ppb (44) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 44.0 | |
| April 17, 2021, 6 a.m. | N/A | 0.0 ppb (0) | 3.5 ppb (4) | N/A | 3.5 ppb (4) | N/A | 47.0 ppb (44) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 44.0 | |
| April 17, 2021, 5 a.m. | N/A | 0.0 ppb (0) | 4.3 ppb (5) | N/A | 4.3 ppb (5) | N/A | 47.0 ppb (44) | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 44.0 | |
| April 17, 2021, 4 a.m. | N/A | 0.0 ppb (0) | 4.6 ppb (5) | N/A | 4.7 ppb (5) | N/A | 49.0 ppb (46) | 0.16 ppb (3) | N/A | 7.0 μg/m3 (30) | 46.0 | |
| April 17, 2021, 3 a.m. | N/A | 0.0 ppb (0) | 3.8 ppb (4) | N/A | 3.8 ppb (4) | N/A | 51.0 ppb (48) | 0.15 ppb (2) | N/A | 7.0 μg/m3 (30) | 48.0 | |
| April 17, 2021, 2 a.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 50.0 ppb (47) | 0.13 ppb (2) | N/A | 6.0 μg/m3 (25) | 47.0 | |
| April 17, 2021, 1 a.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 50.0 ppb (47) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 47.0 | |
| April 17, 2021, midnight | N/A | 0.0 ppb (0) | 3.8 ppb (4) | N/A | 3.8 ppb (4) | N/A | 51.0 ppb (48) | 0.15 ppb (2) | N/A | 7.0 μg/m3 (30) | 48.0 | |
| April 16, 2021, 11 p.m. | N/A | 0.0 ppb (0) | 4.2 ppb (4) | N/A | 4.2 ppb (4) | N/A | 51.0 ppb (48) | 0.15 ppb (2) | N/A | 6.0 μg/m3 (25) | 48.0 | |
| April 16, 2021, 10 p.m. | N/A | 0.0 ppb (0) | 4.0 ppb (4) | N/A | 3.9 ppb (4) | N/A | 51.0 ppb (48) | 0.14 ppb (2) | N/A | 9.0 μg/m3 (38) | 48.0 | |
| April 16, 2021, 9 p.m. | N/A | 0.1 ppb (1) | 3.7 ppb (4) | N/A | 3.5 ppb (4) | N/A | 50.0 ppb (47) | 0.13 ppb (2) | N/A | 7.0 μg/m3 (30) | 47.0 | |
| April 16, 2021, 8 p.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.3 ppb (3) | N/A | 47.0 ppb (44) | 0.12 ppb (2) | N/A | 4.0 μg/m3 (17) | 44.0 | |
| April 16, 2021, 7 p.m. | N/A | 0.0 ppb (0) | 2.1 ppb (2) | N/A | 2.0 ppb (2) | N/A | 45.0 ppb (42) | 0.12 ppb (2) | N/A | 2.0 μg/m3 (9) | 42.0 | |
| April 16, 2021, 6 p.m. | N/A | 0.0 ppb (0) | 2.1 ppb (2) | N/A | 2.0 ppb (2) | N/A | 43.0 ppb (40) | 0.12 ppb (2) | N/A | 2.0 μg/m3 (9) | 40.0 | |
| April 16, 2021, 5 p.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.4 ppb (3) | N/A | 42.0 ppb (39) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 39.0 | |
| April 16, 2021, 4 p.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.3 ppb (3) | N/A | 40.0 ppb (38) | 0.13 ppb (2) | N/A | 4.0 μg/m3 (17) | 38.0 | |
| April 16, 2021, 3 p.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.3 ppb (3) | N/A | 39.0 ppb (37) | 0.13 ppb (2) | N/A | 4.0 μg/m3 (17) | 37.0 | |
| April 16, 2021, 2 p.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.4 ppb (3) | N/A | 38.0 ppb (36) | 0.12 ppb (2) | N/A | 5.0 μg/m3 (21) | 36.0 | |
| April 16, 2021, 1 p.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.3 ppb (3) | N/A | 37.0 ppb (35) | 0.12 ppb (2) | N/A | 6.0 μg/m3 (25) | 35.0 | |
| April 16, 2021, noon | N/A | 0.0 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | N/A | 36.0 ppb (34) | 0.11 ppb (2) | N/A | 4.0 μg/m3 (17) | 34.0 | |
| April 16, 2021, 11 a.m. | N/A | 0.0 ppb (0) | 1.7 ppb (2) | N/A | 1.7 ppb (2) | N/A | 36.0 ppb (34) | 0.12 ppb (2) | N/A | 4.0 μg/m3 (17) | 34.0 | |
| April 16, 2021, 10 a.m. | N/A | 0.0 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | N/A | 36.0 ppb (34) | 0.12 ppb (2) | N/A | 5.0 μg/m3 (21) | 34.0 | |
| April 16, 2021, 9 a.m. | N/A | 0.0 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | N/A | 36.0 ppb (34) | 0.12 ppb (2) | N/A | 4.0 μg/m3 (17) | 34.0 | |
| April 16, 2021, 8 a.m. | N/A | 0.0 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | N/A | 37.0 ppb (35) | 0.11 ppb (2) | N/A | 3.0 μg/m3 (13) | 35.0 | |
| April 16, 2021, 7 a.m. | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | 36.0 ppb (34) | 0.12 ppb (2) | N/A | 4.0 μg/m3 (17) | 34.0 | |
| April 16, 2021, 6 a.m. | N/A | 0.0 ppb (0) | 1.9 ppb (2) | N/A | 1.9 ppb (2) | N/A | 37.0 ppb (35) | 0.12 ppb (2) | N/A | 4.0 μg/m3 (17) | 35.0 | |
| April 16, 2021, 5 a.m. | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | 38.0 ppb (36) | 0.11 ppb (2) | N/A | 4.0 μg/m3 (17) | 36.0 | |
| April 16, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 5.0 μg/m3 (21) | 36.0 | |
| April 16, 2021, 3 a.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.3 ppb (3) | N/A | 38.0 ppb (36) | 0.12 ppb (2) | N/A | 3.0 μg/m3 (13) | 36.0 | |
| April 16, 2021, 2 a.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.4 ppb (3) | N/A | 37.0 ppb (35) | 0.12 ppb (2) | N/A | 3.0 μg/m3 (13) | 35.0 | |
| April 16, 2021, 1 a.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.6 ppb (3) | N/A | 38.0 ppb (36) | 0.12 ppb (2) | N/A | 4.0 μg/m3 (17) | 36.0 | |
| April 16, 2021, midnight | N/A | 0.0 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | N/A | 40.0 ppb (38) | 0.12 ppb (2) | N/A | 3.0 μg/m3 (13) | 38.0 | |
| April 15, 2021, 11 p.m. | N/A | 0.0 ppb (0) | 1.7 ppb (2) | N/A | 1.7 ppb (2) | N/A | 43.0 ppb (40) | 0.11 ppb (2) | N/A | 2.0 μg/m3 (9) | 40.0 | |
| April 15, 2021, 10 p.m. | N/A | 0.0 ppb (0) | 1.7 ppb (2) | N/A | 1.6 ppb (2) | N/A | 44.0 ppb (41) | 0.11 ppb (2) | N/A | 2.0 μg/m3 (9) | 41.0 | |
| April 15, 2021, 9 p.m. | N/A | 0.0 ppb (0) | 2.1 ppb (2) | N/A | 2.0 ppb (2) | N/A | 45.0 ppb (42) | 0.12 ppb (2) | N/A | 2.0 μg/m3 (9) | 42.0 | |
| April 15, 2021, 8 p.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.3 ppb (3) | N/A | 47.0 ppb (44) | 0.13 ppb (2) | N/A | 5.0 μg/m3 (21) | 44.0 | |
| April 15, 2021, 7 p.m. | N/A | 0.0 ppb (0) | 2.3 ppb (3) | N/A | 2.2 ppb (3) | N/A | 46.0 ppb (43) | 0.12 ppb (2) | N/A | 3.0 μg/m3 (13) | 43.0 | |
| April 15, 2021, 6 p.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.4 ppb (3) | N/A | 45.0 ppb (42) | 0.12 ppb (2) | N/A | 5.0 μg/m3 (21) | 42.0 | |
| April 15, 2021, 5 p.m. | N/A | 0.4 ppb (1) | 4.5 ppb (5) | N/A | 4.0 ppb (4) | N/A | 46.0 ppb (43) | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 43.0 | |
| April 15, 2021, 4 p.m. | N/A | 0.3 ppb (1) | 4.5 ppb (5) | N/A | 4.2 ppb (4) | N/A | 44.0 ppb (41) | 0.14 ppb (2) | N/A | 4.0 μg/m3 (17) | 41.0 | |
| April 15, 2021, 3 p.m. | N/A | 0.3 ppb (1) | 3.8 ppb (4) | N/A | 3.5 ppb (4) | N/A | 40.0 ppb (38) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 38.0 | |
| April 15, 2021, 2 p.m. | N/A | 0.2 ppb (1) | 2.9 ppb (3) | N/A | 2.7 ppb (3) | N/A | 38.0 ppb (36) | 0.13 ppb (2) | N/A | 6.0 μg/m3 (25) | 36.0 | |
| April 15, 2021, 1 p.m. | N/A | 0.1 ppb (1) | 2.7 ppb (3) | N/A | 2.6 ppb (3) | N/A | 38.0 ppb (36) | 0.16 ppb (3) | N/A | 7.0 μg/m3 (30) | 36.0 | |
| April 15, 2021, noon | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.4 ppb (3) | N/A | 39.0 ppb (37) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| April 15, 2021, 11 a.m. | N/A | 0.0 ppb (0) | 3.3 ppb (4) | N/A | 3.3 ppb (4) | N/A | 41.0 ppb (38) | 0.15 ppb (2) | N/A | 4.0 μg/m3 (17) | 38.0 | |
| April 15, 2021, 10 a.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 42.0 ppb (39) | 0.14 ppb (2) | N/A | 2.0 μg/m3 (9) | 39.0 | |
| April 15, 2021, 9 a.m. | N/A | 0.0 ppb (0) | 2.1 ppb (2) | N/A | 2.1 ppb (2) | N/A | 40.0 ppb (38) | 0.14 ppb (2) | N/A | 4.0 μg/m3 (17) | 38.0 | |
| April 15, 2021, 8 a.m. | N/A | 0.0 ppb (0) | 2.2 ppb (3) | N/A | 2.2 ppb (3) | N/A | 40.0 ppb (38) | 0.13 ppb (2) | N/A | 4.0 μg/m3 (17) | 38.0 | |
| April 15, 2021, 7 a.m. | N/A | 0.0 ppb (0) | 1.5 ppb (2) | N/A | 1.5 ppb (2) | N/A | 35.0 ppb (33) | 0.16 ppb (3) | N/A | 3.0 μg/m3 (13) | 33.0 | |
| April 15, 2021, 6 a.m. | N/A | 0.0 ppb (0) | 1.5 ppb (2) | N/A | 1.5 ppb (2) | N/A | 36.0 ppb (34) | 0.15 ppb (2) | N/A | 2.0 μg/m3 (9) | 34.0 | |
| April 15, 2021, 5 a.m. | N/A | 0.0 ppb (0) | 1.5 ppb (2) | N/A | 1.5 ppb (2) | N/A | 38.0 ppb (36) | 0.15 ppb (2) | N/A | 1.0 μg/m3 (5) | 36.0 | |
| April 15, 2021, 4 a.m. | N/A | 0.0 ppb (0) | 1.6 ppb (2) | N/A | 1.7 ppb (2) | N/A | 40.0 ppb (38) | 0.16 ppb (3) | N/A | 3.0 μg/m3 (13) | 38.0 | |
| April 15, 2021, 3 a.m. | N/A | 0.0 ppb (0) | 1.6 ppb (2) | N/A | 1.7 ppb (2) | N/A | 45.0 ppb (42) | 0.15 ppb (2) | N/A | 2.0 μg/m3 (9) | 42.0 | |
| April 15, 2021, 2 a.m. | N/A | 0.0 ppb (0) | 1.2 ppb (2) | N/A | 1.2 ppb (2) | N/A | 47.0 ppb (44) | 0.14 ppb (2) | N/A | 3.0 μg/m3 (13) | 44.0 | |
| April 15, 2021, 1 a.m. | N/A | 0.0 ppb (0) | 1.3 ppb (2) | N/A | 1.3 ppb (2) | N/A | 48.0 ppb (45) | 0.16 ppb (3) | N/A | 3.0 μg/m3 (13) | 45.0 | |
| April 15, 2021, midnight | N/A | 0.0 ppb (0) | 1.6 ppb (2) | N/A | 1.6 ppb (2) | N/A | 45.0 ppb (42) | 0.16 ppb (3) | N/A | 1.0 μg/m3 (5) | 42.0 | |
| April 14, 2021, 11 p.m. | N/A | 0.0 ppb (0) | 1.9 ppb (2) | N/A | 1.9 ppb (2) | N/A | 45.0 ppb (42) | 0.16 ppb (3) | N/A | 7.0 μg/m3 (30) | 42.0 | |
| April 14, 2021, 10 p.m. | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | 52.0 ppb (49) | 0.14 ppb (2) | N/A | 9.0 μg/m3 (38) | 49.0 | |
| April 14, 2021, 9 p.m. | N/A | 0.0 ppb (0) | 2.6 ppb (3) | N/A | 2.6 ppb (3) | N/A | 56.0 ppb (55) | 0.17 ppb (3) | N/A | 13.0 μg/m3 (53) | 55.0 | |
| April 14, 2021, 8 p.m. | N/A | 0.0 ppb (0) | 2.2 ppb (3) | N/A | 2.2 ppb (3) | N/A | 54.0 ppb (50) | 0.16 ppb (3) | N/A | 11.0 μg/m3 (46) | 50.0 | |
| April 14, 2021, 7 p.m. | N/A | 0.0 ppb (0) | 2.2 ppb (3) | N/A | 2.2 ppb (3) | N/A | 55.0 ppb (51) | 0.16 ppb (3) | N/A | 7.0 μg/m3 (30) | 51.0 | |
| April 14, 2021, 6 p.m. | N/A | 0.0 ppb (0) | 1.9 ppb (2) | N/A | 1.9 ppb (2) | N/A | 56.0 ppb (55) | 0.16 ppb (3) | N/A | 8.0 μg/m3 (34) | 55.0 | |
| April 14, 2021, 5 p.m. | N/A | 0.0 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | N/A | 53.0 ppb (50) | 0.18 ppb (3) | N/A | 9.0 μg/m3 (38) | 50.0 | |
| April 14, 2021, 4 p.m. | N/A | 0.0 ppb (0) | 1.9 ppb (2) | N/A | 1.8 ppb (2) | N/A | 49.0 ppb (46) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| April 14, 2021, 3 p.m. | N/A | 20.1 ppb (19) | 22.0 ppb (21) | N/A | 1.8 ppb (2) | N/A | 44.0 ppb (41) | 0.36 ppb (5) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| April 14, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| April 14, 2021, 1 p.m. | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | 48.0 ppb (45) | 0.16 ppb (3) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| April 14, 2021, noon | N/A | 0.0 ppb (0) | 1.9 ppb (2) | N/A | 1.9 ppb (2) | N/A | 51.0 ppb (48) | 0.15 ppb (2) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| April 14, 2021, 11 a.m. | N/A | 0.0 ppb (0) | 1.9 ppb (2) | N/A | 1.9 ppb (2) | N/A | 51.0 ppb (48) | 0.16 ppb (3) | N/A | 11.0 μg/m3 (46) | 48.0 | |
| April 14, 2021, 10 a.m. | N/A | 0.0 ppb (0) | 1.9 ppb (2) | N/A | 1.9 ppb (2) | N/A | 52.0 ppb (49) | 0.15 ppb (2) | N/A | 11.0 μg/m3 (46) | 49.0 | |
| April 14, 2021, 9 a.m. | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | 52.0 ppb (49) | 0.16 ppb (3) | N/A | 11.0 μg/m3 (46) | 49.0 | |
| April 14, 2021, 8 a.m. | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | 54.0 ppb (50) | 0.14 ppb (2) | N/A | 10.0 μg/m3 (42) | 50.0 | |
| April 14, 2021, 7 a.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.5 ppb (3) | N/A | 58.0 ppb (61) | 0.16 ppb (3) | N/A | 11.0 μg/m3 (46) | 61.0 | |
| April 14, 2021, 6 a.m. | N/A | 0.0 ppb (0) | 2.5 ppb (3) | N/A | 2.6 ppb (3) | N/A | 59.0 ppb (65) | 0.15 ppb (2) | N/A | 10.0 μg/m3 (42) | 65.0 | |
| April 14, 2021, 5 a.m. | N/A | 0.0 ppb (0) | 2.7 ppb (3) | N/A | 2.7 ppb (3) | N/A | 61.0 ppb (71) | 0.16 ppb (3) | N/A | 7.0 μg/m3 (30) | 71.0 | |
| April 14, 2021, 4 a.m. | N/A | 0.0 ppb (0) | 2.6 ppb (3) | N/A | 2.6 ppb (3) | N/A | 59.0 ppb (65) | 0.16 ppb (3) | N/A | 8.0 μg/m3 (34) | 65.0 | |
| April 14, 2021, 3 a.m. | N/A | 0.0 ppb (0) | 2.6 ppb (3) | N/A | 2.6 ppb (3) | N/A | 59.0 ppb (65) | 0.15 ppb (2) | N/A | 8.0 μg/m3 (34) | 65.0 | |
| April 14, 2021, 2 a.m. | N/A | 0.0 ppb (0) | 2.4 ppb (3) | N/A | 2.4 ppb (3) | N/A | 56.0 ppb (55) | 0.16 ppb (3) | N/A | 9.0 μg/m3 (38) | 55.0 | |
| April 14, 2021, 1 a.m. | N/A | 0.0 ppb (0) | 2.9 ppb (3) | N/A | 2.9 ppb (3) | N/A | 58.0 ppb (61) | 0.18 ppb (3) | N/A | 9.0 μg/m3 (38) | 61.0 | |
| April 14, 2021, midnight | N/A | 0.0 ppb (0) | 2.9 ppb (3) | N/A | 2.9 ppb (3) | N/A | 58.0 ppb (61) | 0.2 ppb (3) | N/A | 11.0 μg/m3 (46) | 61.0 | |
| April 13, 2021, 11 p.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 57.0 ppb (58) | 0.18 ppb (3) | N/A | 8.0 μg/m3 (34) | 58.0 | |
| April 13, 2021, 10 p.m. | N/A | 0.0 ppb (0) | 3.4 ppb (4) | N/A | 3.4 ppb (4) | N/A | 55.0 ppb (51) | 0.18 ppb (3) | N/A | 8.0 μg/m3 (34) | 51.0 | |
| April 13, 2021, 9 p.m. | N/A | 0.0 ppb (0) | 3.6 ppb (4) | N/A | 3.6 ppb (4) | N/A | 55.0 ppb (51) | 0.19 ppb (3) | N/A | 11.0 μg/m3 (46) | 51.0 | |
| April 13, 2021, 8 p.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 2.9 ppb (3) | N/A | 58.0 ppb (61) | 0.16 ppb (3) | N/A | 9.0 μg/m3 (38) | 61.0 | |
| April 13, 2021, 7 p.m. | N/A | 0.0 ppb (0) | 2.8 ppb (3) | N/A | 2.7 ppb (3) | N/A | 57.0 ppb (58) | 0.16 ppb (3) | N/A | 6.0 μg/m3 (25) | 58.0 | |
| April 13, 2021, 6 p.m. | N/A | 0.0 ppb (0) | 2.8 ppb (3) | N/A | 2.7 ppb (3) | N/A | 53.0 ppb (50) | 0.16 ppb (3) | N/A | 6.0 μg/m3 (25) | 50.0 | |
| April 13, 2021, 5 p.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 2.9 ppb (3) | N/A | 52.0 ppb (49) | 0.17 ppb (3) | N/A | 10.0 μg/m3 (42) | 49.0 | |
| April 13, 2021, 4 p.m. | N/A | 0.0 ppb (0) | 2.9 ppb (3) | N/A | 2.8 ppb (3) | N/A | 52.0 ppb (49) | 0.16 ppb (3) | N/A | 7.0 μg/m3 (30) | 49.0 | |
| April 13, 2021, 3 p.m. | N/A | 0.0 ppb (0) | 2.2 ppb (3) | N/A | 2.1 ppb (2) | N/A | N/A | 0.15 ppb (2) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| April 13, 2021, 2 p.m. | N/A | 0.0 ppb (0) | 2.2 ppb (3) | N/A | 2.1 ppb (2) | N/A | 47.0 ppb (44) | 0.14 ppb (2) | N/A | 10.0 μg/m3 (42) | 44.0 | |
| April 13, 2021, 1 p.m. | N/A | 0.0 ppb (0) | 3.1 ppb (3) | N/A | 3.0 ppb (3) | N/A | 54.0 ppb (50) | 0.14 ppb (2) | N/A | 10.0 μg/m3 (42) | 50.0 | |
| April 13, 2021, noon | N/A | 0.0 ppb (0) | 3.2 ppb (4) | N/A | 3.2 ppb (4) | N/A | 57.0 ppb (58) | 0.14 ppb (2) | N/A | 9.0 μg/m3 (38) | 58.0 | |
| April 13, 2021, 11 a.m. | N/A | 0.0 ppb (0) | 3.1 ppb (3) | N/A | 3.1 ppb (3) | N/A | 58.0 ppb (61) | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 61.0 | |
| April 13, 2021, 10 a.m. | N/A | 0.0 ppb (0) | 2.8 ppb (3) | N/A | 2.9 ppb (3) | N/A | 57.0 ppb (58) | 0.13 ppb (2) | N/A | 6.0 μg/m3 (25) | 58.0 | |
| April 13, 2021, 9 a.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 57.0 ppb (58) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 58.0 |