Castle Hayne (Holly Shelter Rd) NC, US: 34.364167, -77.838611
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 21, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.2 μg/m3 (10) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 21, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.6 μg/m3 (9) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 21, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.9 μg/m3 (10) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 21, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.5 μg/m3 (10) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 21, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.4 μg/m3 (10) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 21, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.5 μg/m3 (10) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 21, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.5 μg/m3 (11) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 21, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.4 μg/m3 (11) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 21, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.9 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 21, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.6 μg/m3 (10) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 20, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.4 μg/m3 (12) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 20, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.9 μg/m3 (15) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 20, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.7 μg/m3 (22) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 20, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.8 μg/m3 (29) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 20, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.8 μg/m3 (19) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 20, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.6 μg/m3 (29) | 6.0 μg/m3 (25) | 29.0 | |
| Jan. 20, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (24) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 20, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.9 μg/m3 (22) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 20, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.8 μg/m3 (26) | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 20, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.1 μg/m3 (24) | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 20, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.1 μg/m3 (21) | 16.0 μg/m3 (60) | 60.0 | |
| Jan. 20, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.7 μg/m3 (19) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 20, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.1 μg/m3 (16) | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 20, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.7 μg/m3 (16) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 20, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.3 μg/m3 (16) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 20, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.7 μg/m3 (16) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 20, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.3 μg/m3 (14) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 20, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.3 μg/m3 (11) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 20, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.4 μg/m3 (10) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 20, 2021, 4 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 | |
| Jan. 20, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.4 μg/m3 (10) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 20, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 20, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 20, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.5 μg/m3 (8) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 19, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.4 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 19, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.3 μg/m3 (8) | 2.0 μg/m3 (9) | 9.0 | |
| Jan. 19, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.7 μg/m3 (8) | 3.0 μg/m3 (13) | 13.0 | |
| Jan. 19, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.6 μg/m3 (8) | 2.0 μg/m3 (9) | 9.0 | |
| Jan. 19, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.4 μg/m3 (5) | 0.0 μg/m3 (0) | 5.0 | |
| Jan. 19, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 0.0 | |
| Jan. 19, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.6 μg/m3 (8) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 19, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.5 μg/m3 (10) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 19, 2021, 2 p.m. | 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 | |
| Jan. 19, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.1 μg/m3 (9) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 19, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.5 μg/m3 (8) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 19, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.9 μg/m3 (8) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 19, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.2 μg/m3 (8) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 19, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.3 μg/m3 (9) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 19, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.4 μg/m3 (8) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 19, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.4 μg/m3 (9) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 19, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.3 μg/m3 (10) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 19, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.7 μg/m3 (10) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 19, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.5 μg/m3 (11) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 19, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (10) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 19, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.9 μg/m3 (9) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 19, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.3 μg/m3 (8) | 3.0 μg/m3 (13) | 13.0 | |
| Jan. 19, 2021, midnight | 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 | |
| Jan. 18, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.3 μg/m3 (7) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 18, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.5 μg/m3 (10) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 18, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.7 μg/m3 (10) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 18, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.1 μg/m3 (16) | 2.0 μg/m3 (9) | 16.0 | |
| Jan. 18, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.3 μg/m3 (10) | 2.0 μg/m3 (9) | 10.0 | |
| Jan. 18, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.1 μg/m3 (10) | 3.0 μg/m3 (13) | 13.0 | |
| Jan. 18, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 18, 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 | |
| Jan. 18, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.2 μg/m3 (15) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 18, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.2 μg/m3 (13) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 18, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.9 μg/m3 (12) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 18, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.6 μg/m3 (12) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 18, 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) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 18, 2021, 10 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 | |
| Jan. 18, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.8 μg/m3 (8) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 18, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.3 μg/m3 (8) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 18, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 18, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.7 μg/m3 (8) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 18, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.2 μg/m3 (8) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 18, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.1 μg/m3 (8) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 18, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.4 μg/m3 (9) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 18, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.1 μg/m3 (10) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 18, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.5 μg/m3 (9) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 18, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.3 μg/m3 (8) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 17, 2021, 11 p.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 | |
| Jan. 17, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.4 μg/m3 (6) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 17, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.5 μg/m3 (7) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 17, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.3 μg/m3 (6) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 17, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.8 μg/m3 (6) | 3.0 μg/m3 (13) | 13.0 | |
| Jan. 17, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.3 μg/m3 (6) | 2.0 μg/m3 (9) | 9.0 | |
| Jan. 17, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.1 μg/m3 (6) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 17, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.6 μg/m3 (6) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 17, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.9 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 17, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.5 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 17, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.5 μg/m3 (7) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 17, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.7 μg/m3 (8) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 17, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.9 μg/m3 (7) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 17, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 2.0 μg/m3 (9) | 9.0 | |
| Jan. 17, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.7 μg/m3 (7) | 3.0 μg/m3 (13) | 13.0 | |
| Jan. 17, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.6 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 17, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.2 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 17, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.7 μg/m3 (8) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 17, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.6 μg/m3 (7) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 17, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.9 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 17, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 17, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.2 μg/m3 (9) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 17, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.5 μg/m3 (9) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 17, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.4 μg/m3 (10) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 16, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (13) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 16, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.9 μg/m3 (15) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 16, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.8 μg/m3 (18) | 4.0 μg/m3 (17) | 18.0 | |
| Jan. 16, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.4 μg/m3 (17) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 16, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.8 μg/m3 (18) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 16, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.6 μg/m3 (20) | 4.0 μg/m3 (17) | 20.0 | |
| Jan. 16, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.1 μg/m3 (18) | 3.0 μg/m3 (13) | 18.0 | |
| Jan. 16, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.5 μg/m3 (17) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 16, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.2 μg/m3 (15) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 16, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.9 μg/m3 (15) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 16, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.3 μg/m3 (11) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 16, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.1 μg/m3 (10) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 16, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.9 μg/m3 (9) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 16, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.9 μg/m3 (8) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 16, 2021, 9 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 | |
| Jan. 16, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.1 μg/m3 (7) | 3.0 μg/m3 (13) | 13.0 | |
| Jan. 16, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.5 μg/m3 (6) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 16, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.8 μg/m3 (7) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 16, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.7 μg/m3 (7) | 2.0 μg/m3 (9) | 9.0 | |
| Jan. 16, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.1 μg/m3 (6) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 16, 2021, 3 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 | |
| Jan. 16, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.6 μg/m3 (8) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 16, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.7 μg/m3 (9) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 16, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.4 μg/m3 (11) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 15, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.9 μg/m3 (11) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 15, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.2 μg/m3 (11) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 15, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.6 μg/m3 (9) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 15, 2021, 8 p.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 | |
| Jan. 15, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.7 μg/m3 (11) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 15, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.9 μg/m3 (12) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 15, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.5 μg/m3 (11) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 15, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.8 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 15, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.4 μg/m3 (13) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 15, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.9 μg/m3 (15) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 15, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.1 μg/m3 (10) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 15, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.3 μg/m3 (10) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 15, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.1 μg/m3 (10) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 15, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.8 μg/m3 (10) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 15, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.6 μg/m3 (10) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 15, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.9 μg/m3 (12) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 15, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.3 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 15, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.5 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 15, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.2 μg/m3 (11) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 15, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.2 μg/m3 (12) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 15, 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) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 15, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.4 μg/m3 (14) | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 15, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.4 μg/m3 (14) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 15, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.8 μg/m3 (12) | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 14, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (13) | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 14, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.2 μg/m3 (12) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 14, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.8 μg/m3 (11) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 14, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.1 μg/m3 (14) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 14, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.1 μg/m3 (14) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 14, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| Jan. 14, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 14, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 14, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 14, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 14, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Jan. 14, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 14, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 14, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 14, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 |