Yosemite National Park (Yosemite Theater) CA, US: 37.748707, -119.587094
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 14, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.4 μg/m3 (24) | 3.0 μg/m3 (13) | 24.0 | |
| May 14, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.3 μg/m3 (25) | 2.0 μg/m3 (9) | 25.0 | |
| May 14, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.3 μg/m3 (31) | 2.0 μg/m3 (9) | 31.0 | |
| May 14, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.3 μg/m3 (10) | 1.0 μg/m3 (5) | 10.0 | |
| May 14, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.4 μg/m3 (13) | 3.0 μg/m3 (13) | 13.0 | |
| May 14, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.5 μg/m3 (16) | 6.0 μg/m3 (25) | 25.0 | |
| May 14, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.3 μg/m3 (20) | 5.0 μg/m3 (21) | 21.0 | |
| May 14, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.8 μg/m3 (11) | 2.0 μg/m3 (9) | 11.0 | |
| May 14, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.7 μg/m3 (13) | 5.0 μg/m3 (21) | 21.0 | |
| May 14, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.9 μg/m3 (10) | 6.0 μg/m3 (25) | 25.0 | |
| May 14, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.9 μg/m3 (19) | 7.0 μg/m3 (30) | 30.0 | |
| May 14, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (23) | 7.0 μg/m3 (30) | 30.0 | |
| May 14, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.3 μg/m3 (29) | 8.0 μg/m3 (34) | 34.0 | |
| May 14, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 7.0 μg/m3 (30) | 30.0 | |
| May 14, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.7 μg/m3 (14) | 7.0 μg/m3 (30) | 30.0 | |
| May 14, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.8 μg/m3 (34) | 26.0 μg/m3 (81) | 81.0 | |
| May 14, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.6 μg/m3 (14) | 10.0 μg/m3 (42) | 42.0 | |
| May 14, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.1 μg/m3 (20) | 8.0 μg/m3 (34) | 34.0 | |
| May 14, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.7 μg/m3 (20) | 5.0 μg/m3 (21) | 21.0 | |
| May 14, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.6 μg/m3 (24) | 5.0 μg/m3 (21) | 24.0 | |
| May 14, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.9 μg/m3 (16) | 7.0 μg/m3 (30) | 30.0 | |
| May 13, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.2 μg/m3 (14) | 5.0 μg/m3 (21) | 21.0 | |
| May 13, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.9 μg/m3 (19) | 6.0 μg/m3 (25) | 25.0 | |
| May 13, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.6 μg/m3 (23) | 3.0 μg/m3 (13) | 23.0 | |
| May 13, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.9 μg/m3 (28) | 4.0 μg/m3 (17) | 28.0 | |
| May 13, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.1 μg/m3 (27) | 5.0 μg/m3 (21) | 27.0 | |
| May 13, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (13) | 7.0 μg/m3 (30) | 30.0 | |
| May 13, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.6 μg/m3 (16) | 6.0 μg/m3 (25) | 25.0 | |
| May 13, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.1 μg/m3 (15) | 7.0 μg/m3 (30) | 30.0 | |
| May 13, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.7 μg/m3 (14) | 6.0 μg/m3 (25) | 25.0 | |
| May 13, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.1 μg/m3 (12) | 8.0 μg/m3 (34) | 34.0 | |
| May 13, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (10) | 7.0 μg/m3 (30) | 30.0 | |
| May 13, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.4 μg/m3 (8) | 7.0 μg/m3 (30) | 30.0 | |
| May 13, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.7 μg/m3 (9) | 7.0 μg/m3 (30) | 30.0 | |
| May 13, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.8 μg/m3 (10) | 10.0 μg/m3 (42) | 42.0 | |
| May 13, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.5 μg/m3 (11) | 12.0 μg/m3 (50) | 50.0 | |
| May 13, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.1 μg/m3 (13) | 8.0 μg/m3 (34) | 34.0 | |
| May 13, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.9 μg/m3 (13) | 11.0 μg/m3 (46) | 46.0 | |
| May 13, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 51.1 μg/m3 (48) | 33.0 μg/m3 (95) | 95.0 | |
| May 13, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.8 μg/m3 (27) | 17.0 μg/m3 (62) | 62.0 | |
| May 13, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.8 μg/m3 (23) | 8.0 μg/m3 (34) | 34.0 | |
| May 13, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.1 μg/m3 (21) | 10.0 μg/m3 (42) | 42.0 | |
| May 13, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.8 μg/m3 (23) | 7.0 μg/m3 (30) | 30.0 | |
| May 13, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.5 μg/m3 (21) | 4.0 μg/m3 (17) | 21.0 | |
| May 12, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.4 μg/m3 (16) | 3.0 μg/m3 (13) | 16.0 | |
| May 12, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.3 μg/m3 (10) | 1.0 μg/m3 (5) | 10.0 | |
| May 12, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.9 μg/m3 (15) | 4.0 μg/m3 (17) | 17.0 | |
| May 12, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.3 μg/m3 (15) | 7.0 μg/m3 (30) | 30.0 | |
| May 12, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.8 μg/m3 (26) | 5.0 μg/m3 (21) | 26.0 | |
| May 12, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.6 μg/m3 (14) | 3.0 μg/m3 (13) | 14.0 | |
| May 12, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.5 μg/m3 (13) | 3.0 μg/m3 (13) | 13.0 | |
| May 12, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.1 μg/m3 (20) | 7.0 μg/m3 (30) | 30.0 | |
| May 12, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.9 μg/m3 (14) | 8.0 μg/m3 (34) | 34.0 | |
| May 12, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.2 μg/m3 (16) | 4.0 μg/m3 (17) | 17.0 | |
| May 12, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.5 μg/m3 (12) | 6.0 μg/m3 (25) | 25.0 | |
| May 12, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.6 μg/m3 (10) | 6.0 μg/m3 (25) | 25.0 | |
| May 12, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.5 μg/m3 (12) | 5.0 μg/m3 (21) | 21.0 | |
| May 12, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.2 μg/m3 (11) | 5.0 μg/m3 (21) | 21.0 | |
| May 12, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.4 μg/m3 (9) | 5.0 μg/m3 (21) | 21.0 | |
| May 12, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.2 μg/m3 (8) | 4.0 μg/m3 (17) | 17.0 | |
| May 12, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.4 μg/m3 (13) | 6.0 μg/m3 (25) | 25.0 | |
| May 12, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.9 μg/m3 (19) | 10.0 μg/m3 (42) | 42.0 | |
| May 12, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 48.3 μg/m3 (45) | 36.0 μg/m3 (103) | 103.0 | |
| May 12, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (21) | 9.0 μg/m3 (38) | 38.0 | |
| May 12, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.7 μg/m3 (25) | 9.0 μg/m3 (38) | 38.0 | |
| May 12, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.3 μg/m3 (23) | 10.0 μg/m3 (42) | 42.0 | |
| May 12, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.1 μg/m3 (23) | 11.0 μg/m3 (46) | 46.0 | |
| May 12, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.7 μg/m3 (20) | 8.0 μg/m3 (34) | 34.0 | |
| May 11, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.7 μg/m3 (17) | 6.0 μg/m3 (25) | 25.0 | |
| May 11, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.8 μg/m3 (21) | 5.0 μg/m3 (21) | 21.0 | |
| May 11, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.2 μg/m3 (16) | 5.0 μg/m3 (21) | 21.0 | |
| May 11, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.4 μg/m3 (18) | 7.0 μg/m3 (30) | 30.0 | |
| May 11, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.3 μg/m3 (21) | 5.0 μg/m3 (21) | 21.0 | |
| May 11, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.3 μg/m3 (19) | 5.0 μg/m3 (21) | 21.0 | |
| May 11, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (13) | 5.0 μg/m3 (21) | 21.0 | |
| May 11, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 6.0 μg/m3 (25) | 25.0 | |
| May 11, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.9 μg/m3 (20) | 6.0 μg/m3 (25) | 25.0 | |
| May 11, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.2 μg/m3 (22) | 5.0 μg/m3 (21) | 22.0 | |
| May 11, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.5 μg/m3 (12) | 5.0 μg/m3 (21) | 21.0 | |
| May 11, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.7 μg/m3 (9) | 6.0 μg/m3 (25) | 25.0 | |
| May 11, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.7 μg/m3 (9) | 4.0 μg/m3 (17) | 17.0 | |
| May 11, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.8 μg/m3 (12) | 3.0 μg/m3 (13) | 13.0 | |
| May 11, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.4 μg/m3 (6) | 3.0 μg/m3 (13) | 13.0 | |
| May 11, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.8 μg/m3 (9) | 4.0 μg/m3 (17) | 17.0 | |
| May 11, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (20) | 7.0 μg/m3 (30) | 30.0 | |
| May 11, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 37.9 μg/m3 (36) | 26.0 μg/m3 (81) | 81.0 | |
| May 11, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 53.2 μg/m3 (50) | 42.0 μg/m3 (118) | 118.0 | |
| May 11, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.2 μg/m3 (19) | 7.0 μg/m3 (30) | 30.0 | |
| May 11, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.9 μg/m3 (16) | 5.0 μg/m3 (21) | 21.0 | |
| May 11, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.5 μg/m3 (19) | 4.0 μg/m3 (17) | 19.0 | |
| May 11, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.3 μg/m3 (21) | 3.0 μg/m3 (13) | 21.0 | |
| May 11, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.4 μg/m3 (20) | 4.0 μg/m3 (17) | 20.0 | |
| May 10, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.8 μg/m3 (13) | 3.0 μg/m3 (13) | 13.0 | |
| May 10, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.8 μg/m3 (17) | 3.0 μg/m3 (13) | 17.0 | |
| May 10, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.5 μg/m3 (18) | 4.0 μg/m3 (17) | 18.0 | |
| May 10, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.6 μg/m3 (24) | 2.0 μg/m3 (9) | 24.0 | |
| May 10, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.1 μg/m3 (20) | 6.0 μg/m3 (25) | 25.0 | |
| May 10, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.4 μg/m3 (15) | 9.0 μg/m3 (38) | 38.0 | |
| May 10, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 7.0 μg/m3 (30) | 30.0 | |
| May 10, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.3 μg/m3 (17) | 8.0 μg/m3 (34) | 34.0 | |
| May 10, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.9 μg/m3 (24) | 9.0 μg/m3 (38) | 38.0 | |
| May 10, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 57.6 μg/m3 (53) | 7.0 μg/m3 (30) | 53.0 | |
| May 10, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 49.5 μg/m3 (46) | 4.0 μg/m3 (17) | 46.0 | |
| May 10, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.6 μg/m3 (20) | 4.0 μg/m3 (17) | 20.0 | |
| May 10, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.8 μg/m3 (12) | 6.0 μg/m3 (25) | 25.0 | |
| May 10, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.5 μg/m3 (11) | 4.0 μg/m3 (17) | 17.0 | |
| May 10, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.6 μg/m3 (12) | 4.0 μg/m3 (17) | 17.0 | |
| May 10, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.5 μg/m3 (25) | 5.0 μg/m3 (21) | 25.0 | |
| May 10, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.7 μg/m3 (14) | 7.0 μg/m3 (30) | 30.0 | |
| May 10, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.7 μg/m3 (31) | 19.0 μg/m3 (66) | 66.0 | |
| May 10, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 36.6 μg/m3 (34) | 26.0 μg/m3 (81) | 81.0 | |
| May 10, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.6 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| May 10, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 5.0 μg/m3 (21) | 21.0 | |
| May 10, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.5 μg/m3 (19) | 7.0 μg/m3 (30) | 30.0 | |
| May 10, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 μg/m3 (25) | 10.0 μg/m3 (42) | 42.0 | |
| May 10, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.3 μg/m3 (26) | 5.0 μg/m3 (21) | 26.0 | |
| May 9, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.8 μg/m3 (26) | 6.0 μg/m3 (25) | 26.0 | |
| May 9, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.1 μg/m3 (27) | 6.0 μg/m3 (25) | 27.0 | |
| May 9, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.3 μg/m3 (27) | 6.0 μg/m3 (25) | 27.0 | |
| May 9, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.6 μg/m3 (26) | 4.0 μg/m3 (17) | 26.0 | |
| May 9, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.7 μg/m3 (19) | 3.0 μg/m3 (13) | 19.0 | |
| May 9, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.6 μg/m3 (20) | 3.0 μg/m3 (13) | 20.0 | |
| May 9, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.4 μg/m3 (11) | 2.0 μg/m3 (9) | 11.0 | |
| May 9, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.5 μg/m3 (18) | 1.0 μg/m3 (5) | 18.0 | |
| May 9, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.3 μg/m3 (18) | 3.0 μg/m3 (13) | 18.0 | |
| May 9, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.2 μg/m3 (11) | 5.0 μg/m3 (21) | 21.0 | |
| May 9, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.9 μg/m3 (5) | 3.0 μg/m3 (13) | 13.0 | |
| May 9, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.3 μg/m3 (7) | 4.0 μg/m3 (17) | 17.0 | |
| May 9, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.8 μg/m3 (10) | 4.0 μg/m3 (17) | 17.0 | |
| May 9, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.4 μg/m3 (8) | 4.0 μg/m3 (17) | 17.0 | |
| May 9, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.7 μg/m3 (9) | 5.0 μg/m3 (21) | 21.0 | |
| May 9, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.7 μg/m3 (10) | 7.0 μg/m3 (30) | 30.0 | |
| May 9, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.7 μg/m3 (19) | 6.0 μg/m3 (25) | 25.0 | |
| May 9, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.5 μg/m3 (24) | 17.0 μg/m3 (62) | 62.0 | |
| May 9, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 40.8 μg/m3 (38) | 24.0 μg/m3 (77) | 77.0 | |
| May 9, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 5.0 μg/m3 (21) | 21.0 | |
| May 9, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.6 μg/m3 (15) | 5.0 μg/m3 (21) | 21.0 | |
| May 9, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.7 μg/m3 (28) | 4.0 μg/m3 (17) | 28.0 | |
| May 9, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.8 μg/m3 (23) | 6.0 μg/m3 (25) | 25.0 | |
| May 9, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.1 μg/m3 (14) | 9.0 μg/m3 (38) | 38.0 | |
| May 8, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.4 μg/m3 (16) | 7.0 μg/m3 (30) | 30.0 | |
| May 8, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 4.0 μg/m3 (17) | 17.0 | |
| May 8, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.9 μg/m3 (12) | 0.0 μg/m3 (0) | 12.0 | |
| May 8, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.2 μg/m3 (9) | 1.0 μg/m3 (5) | 9.0 | |
| May 8, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.1 μg/m3 (8) | 2.0 μg/m3 (9) | 9.0 | |
| May 8, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.7 μg/m3 (7) | 4.0 μg/m3 (17) | 17.0 | |
| May 8, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.7 μg/m3 (6) | 4.0 μg/m3 (17) | 17.0 | |
| May 8, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.3 μg/m3 (10) | 1.0 μg/m3 (5) | 10.0 | |
| May 8, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.6 μg/m3 (12) | 5.0 μg/m3 (21) | 21.0 | |
| May 8, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 45.8 μg/m3 (43) | 8.0 μg/m3 (34) | 43.0 | |
| May 8, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.1 μg/m3 (4) | 0.0 μg/m3 (0) | 4.0 | |
| May 8, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.5 μg/m3 (3) | 2.0 μg/m3 (9) | 9.0 | |
| May 8, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.1 μg/m3 (4) | 6.0 μg/m3 (25) | 25.0 | |
| May 8, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.4 μg/m3 (5) | 6.0 μg/m3 (25) | 25.0 | |
| May 8, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.1 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| May 8, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 4.0 μg/m3 (17) | 17.0 | |
| May 8, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.8 μg/m3 (9) | 5.0 μg/m3 (21) | 21.0 | |
| May 8, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.5 μg/m3 (15) | 9.0 μg/m3 (38) | 38.0 | |
| May 8, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.5 μg/m3 (16) | 5.0 μg/m3 (21) | 21.0 | |
| May 8, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.7 μg/m3 (9) | -1.0 μg/m3 (0) | 9.0 | |
| May 8, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.3 μg/m3 (13) | -1.0 μg/m3 (0) | 13.0 | |
| May 8, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.6 μg/m3 (15) | -1.0 μg/m3 (0) | 15.0 | |
| May 7, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.8 μg/m3 (13) | 5.0 μg/m3 (21) | 21.0 | |
| May 7, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.9 μg/m3 (18) | 6.0 μg/m3 (25) | 25.0 | |
| May 7, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.8 μg/m3 (10) | 3.0 μg/m3 (13) | 13.0 | |
| May 7, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.3 μg/m3 (21) | 7.0 μg/m3 (30) | 30.0 | |
| May 7, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.1 μg/m3 (18) | 4.0 μg/m3 (17) | 18.0 | |
| May 7, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 3.0 μg/m3 (13) | 15.0 |