Aberdeen (Melrose Addition) SD, US: 45.468596, -98.494061
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 6, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 8.8 μg/m3 (37) | 37.0 | |
| March 6, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.8 μg/m3 (15) | 10.8 μg/m3 (46) | 46.0 | |
| March 6, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.8 μg/m3 (17) | 13.0 μg/m3 (53) | 53.0 | |
| March 6, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.8 μg/m3 (13) | 13.5 μg/m3 (54) | 54.0 | |
| March 6, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.4 μg/m3 (20) | 9.5 μg/m3 (40) | 40.0 | |
| March 6, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 14.7 μg/m3 (57) | 57.0 | |
| March 6, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.3 μg/m3 (23) | 11.2 μg/m3 (47) | 47.0 | |
| March 6, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.4 μg/m3 (28) | 16.1 μg/m3 (60) | 60.0 | |
| March 6, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.9 μg/m3 (28) | 14.4 μg/m3 (56) | 56.0 | |
| March 6, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.9 μg/m3 (28) | 15.4 μg/m3 (58) | 58.0 | |
| March 5, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.2 μg/m3 (27) | 11.0 μg/m3 (46) | 46.0 | |
| March 5, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.7 μg/m3 (29) | 14.2 μg/m3 (56) | 56.0 | |
| March 5, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.5 μg/m3 (26) | 15.9 μg/m3 (59) | 59.0 | |
| March 5, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.5 μg/m3 (27) | 15.9 μg/m3 (59) | 59.0 | |
| March 5, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.3 μg/m3 (33) | 20.3 μg/m3 (69) | 69.0 | |
| March 5, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.9 μg/m3 (29) | 24.2 μg/m3 (77) | 77.0 | |
| March 5, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.7 μg/m3 (26) | 24.9 μg/m3 (78) | 78.0 | |
| March 5, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.5 μg/m3 (25) | 17.9 μg/m3 (64) | 64.0 | |
| March 5, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.6 μg/m3 (23) | 15.2 μg/m3 (58) | 58.0 | |
| March 5, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.6 μg/m3 (12) | 9.1 μg/m3 (38) | 38.0 | |
| March 5, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.6 μg/m3 (13) | 8.1 μg/m3 (34) | 34.0 | |
| March 5, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.8 μg/m3 (12) | 8.8 μg/m3 (37) | 37.0 | |
| March 5, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.8 μg/m3 (13) | 8.8 μg/m3 (37) | 37.0 | |
| March 5, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 11.3 μg/m3 (48) | 48.0 | |
| March 5, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.8 μg/m3 (16) | 10.3 μg/m3 (43) | 43.0 | |
| March 5, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.6 μg/m3 (13) | 11.5 μg/m3 (48) | 48.0 | |
| March 5, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.5 μg/m3 (25) | 12.5 μg/m3 (52) | 52.0 | |
| March 5, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.4 μg/m3 (19) | 10.3 μg/m3 (43) | 43.0 | |
| March 5, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.5 μg/m3 (25) | 13.5 μg/m3 (54) | 54.0 | |
| March 5, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.2 μg/m3 (27) | 10.7 μg/m3 (45) | 45.0 | |
| March 5, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.9 μg/m3 (27) | 10.3 μg/m3 (43) | 43.0 | |
| March 5, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m3 (32) | 11.2 μg/m3 (47) | 47.0 | |
| March 5, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 52.1 μg/m3 (49) | 11.7 μg/m3 (49) | 49.0 | |
| March 5, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 μg/m3 (36) | 8.5 μg/m3 (36) | 36.0 | |
| March 4, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 40.7 μg/m3 (38) | 7.5 μg/m3 (32) | 38.0 | |
| March 4, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.6 μg/m3 (24) | 5.5 μg/m3 (23) | 24.0 | |
| March 4, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.6 μg/m3 (24) | 3.9 μg/m3 (17) | 24.0 | |
| March 4, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.7 μg/m3 (28) | 6.3 μg/m3 (27) | 28.0 | |
| March 4, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.5 μg/m3 (28) | 7.3 μg/m3 (31) | 31.0 | |
| March 4, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.7 μg/m3 (25) | 7.5 μg/m3 (32) | 32.0 | |
| March 4, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.9 μg/m3 (30) | 8.8 μg/m3 (37) | 37.0 | |
| March 4, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.8 μg/m3 (29) | 29.0 | |
| March 4, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.9 μg/m3 (12) | N/A | 12.0 | |
| March 4, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 8.5 μg/m3 (36) | 36.0 | |
| March 4, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.4 μg/m3 (10) | 5.1 μg/m3 (22) | 22.0 | |
| March 4, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.2 μg/m3 (8) | 5.1 μg/m3 (22) | 22.0 | |
| March 4, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.6 μg/m3 (10) | 5.1 μg/m3 (22) | 22.0 | |
| March 4, 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) | 6.6 μg/m3 (28) | 28.0 | |
| March 4, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.5 μg/m3 (17) | 5.1 μg/m3 (22) | 22.0 | |
| March 4, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.3 μg/m3 (16) | 6.3 μg/m3 (27) | 27.0 | |
| March 4, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.9 μg/m3 (12) | 7.8 μg/m3 (33) | 33.0 | |
| March 4, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.3 μg/m3 (24) | 3.6 μg/m3 (16) | 24.0 | |
| March 4, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.6 μg/m3 (20) | 1.6 μg/m3 (7) | 20.0 | |
| March 4, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.9 μg/m3 (27) | 4.1 μg/m3 (18) | 27.0 | |
| March 4, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.6 μg/m3 (22) | 6.4 μg/m3 (27) | 27.0 | |
| March 4, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.8 μg/m3 (33) | 7.3 μg/m3 (31) | 33.0 | |
| March 4, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.6 μg/m3 (23) | 5.3 μg/m3 (23) | 23.0 | |
| March 3, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.9 μg/m3 (23) | 3.1 μg/m3 (13) | 23.0 | |
| March 3, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.3 μg/m3 (18) | 1.2 μg/m3 (5) | 18.0 | |
| March 3, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.7 μg/m3 (18) | 1.9 μg/m3 (8) | 18.0 | |
| March 3, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.5 μg/m3 (26) | 3.1 μg/m3 (13) | 26.0 | |
| March 3, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.9 μg/m3 (22) | 4.1 μg/m3 (18) | 22.0 | |
| March 3, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.1 μg/m3 (11) | 3.4 μg/m3 (15) | 15.0 | |
| March 3, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.1 μg/m3 (19) | 4.6 μg/m3 (20) | 20.0 | |
| March 3, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.8 μg/m3 (14) | 6.5 μg/m3 (28) | 28.0 | |
| March 3, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 6.1 μg/m3 (26) | 26.0 | |
| March 3, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.4 μg/m3 (6) | 8.5 μg/m3 (36) | 36.0 | |
| March 3, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.1 μg/m3 (11) | 7.3 μg/m3 (31) | 31.0 | |
| March 3, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.6 μg/m3 (12) | 4.1 μg/m3 (18) | 18.0 | |
| March 3, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.2 μg/m3 (9) | 5.1 μg/m3 (22) | 22.0 | |
| March 3, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.2 μg/m3 (9) | 5.1 μg/m3 (22) | 22.0 | |
| March 3, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.5 μg/m3 (7) | 5.1 μg/m3 (22) | 22.0 | |
| March 3, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.4 μg/m3 (10) | 1.4 μg/m3 (6) | 10.0 | |
| March 3, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.2 μg/m3 (9) | 3.9 μg/m3 (17) | 17.0 | |
| March 3, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.2 μg/m3 (15) | 6.3 μg/m3 (27) | 27.0 | |
| March 3, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.7 μg/m3 (32) | 4.8 μg/m3 (20) | 32.0 | |
| March 3, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.5 μg/m3 (33) | 6.6 μg/m3 (28) | 33.0 | |
| March 3, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.1 μg/m3 (29) | 7.0 μg/m3 (30) | 30.0 | |
| March 3, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 μg/m3 (35) | 7.5 μg/m3 (32) | 35.0 | |
| March 3, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.8 μg/m3 (32) | 5.3 μg/m3 (23) | 32.0 | |
| March 3, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.5 μg/m3 (17) | 3.4 μg/m3 (15) | 17.0 | |
| March 2, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.4 μg/m3 (10) | 2.6 μg/m3 (11) | 11.0 | |
| March 2, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (10) | 3.9 μg/m3 (17) | 17.0 | |
| March 2, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.8 μg/m3 (9) | 1.4 μg/m3 (6) | 9.0 | |
| March 2, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.6 μg/m3 (11) | 0.0 μg/m3 (0) | 11.0 | |
| March 2, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.2 μg/m3 (11) | -2.2 μg/m3 (0) | 11.0 | |
| March 2, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.5 μg/m3 (18) | -0.5 μg/m3 (0) | 18.0 | |
| March 2, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 51.4 μg/m3 (48) | 2.1 μg/m3 (9) | 48.0 | |
| March 2, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.3 μg/m3 (18) | 2.6 μg/m3 (11) | 18.0 | |
| March 2, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.1 μg/m3 (13) | 3.1 μg/m3 (13) | 13.0 | |
| March 2, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.7 μg/m3 (8) | 3.4 μg/m3 (15) | 15.0 | |
| March 2, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.7 μg/m3 (8) | 3.1 μg/m3 (13) | 13.0 | |
| March 2, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.3 μg/m3 (7) | 2.6 μg/m3 (11) | 11.0 | |
| March 2, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.5 μg/m3 (8) | 2.9 μg/m3 (13) | 13.0 | |
| March 2, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.3 μg/m3 (11) | 6.4 μg/m3 (27) | 27.0 | |
| March 2, 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) | 8.5 μg/m3 (36) | 36.0 | |
| March 2, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.6 μg/m3 (11) | 5.1 μg/m3 (22) | 22.0 | |
| March 2, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.6 μg/m3 (20) | 2.2 μg/m3 (10) | 20.0 | |
| March 2, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.6 μg/m3 (12) | 3.4 μg/m3 (15) | 15.0 | |
| March 2, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.1 μg/m3 (11) | 6.1 μg/m3 (26) | 26.0 | |
| March 2, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.9 μg/m3 (10) | 7.5 μg/m3 (32) | 32.0 | |
| March 2, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.5 μg/m3 (13) | 6.6 μg/m3 (28) | 28.0 | |
| March 2, 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) | 7.4 μg/m3 (31) | 31.0 | |
| March 2, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.2 μg/m3 (16) | 6.9 μg/m3 (29) | 29.0 | |
| March 2, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m3 (32) | 6.1 μg/m3 (26) | 32.0 | |
| March 1, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 43.7 μg/m3 (41) | 3.4 μg/m3 (15) | 41.0 | |
| March 1, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.1 μg/m3 (31) | 1.1 μg/m3 (5) | 31.0 | |
| March 1, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.7 μg/m3 (25) | 0.1 μg/m3 (1) | 25.0 | |
| March 1, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.1 μg/m3 (22) | -0.2 μg/m3 (0) | 22.0 | |
| March 1, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.7 μg/m3 (18) | 2.6 μg/m3 (11) | 18.0 | |
| March 1, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.5 μg/m3 (16) | 4.9 μg/m3 (21) | 21.0 | |
| March 1, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.3 μg/m3 (14) | 3.1 μg/m3 (13) | 14.0 | |
| March 1, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.1 μg/m3 (11) | 2.9 μg/m3 (13) | 13.0 | |
| March 1, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.4 μg/m3 (14) | 4.4 μg/m3 (19) | 19.0 | |
| March 1, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.6 μg/m3 (9) | 5.1 μg/m3 (22) | 22.0 | |
| March 1, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.8 μg/m3 (8) | 6.1 μg/m3 (26) | 26.0 | |
| March 1, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.3 μg/m3 (10) | 5.6 μg/m3 (24) | 24.0 | |
| March 1, 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) | 3.4 μg/m3 (15) | 15.0 | |
| March 1, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.5 μg/m3 (7) | 5.1 μg/m3 (22) | 22.0 | |
| March 1, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.9 μg/m3 (9) | 7.4 μg/m3 (31) | 31.0 | |
| March 1, 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) | 7.7 μg/m3 (33) | 33.0 | |
| March 1, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.5 μg/m3 (12) | 8.3 μg/m3 (35) | 35.0 | |
| March 1, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.9 μg/m3 (11) | 7.8 μg/m3 (33) | 33.0 | |
| March 1, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.5 μg/m3 (13) | 2.4 μg/m3 (10) | 13.0 | |
| March 1, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.6 μg/m3 (8) | 4.1 μg/m3 (18) | 18.0 | |
| March 1, 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) | 5.4 μg/m3 (23) | 23.0 | |
| March 1, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.4 μg/m3 (10) | 6.4 μg/m3 (27) | 27.0 | |
| March 1, 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) | 7.3 μg/m3 (31) | 31.0 | |
| March 1, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.6 μg/m3 (11) | 4.6 μg/m3 (20) | 20.0 | |
| Feb. 28, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.8 μg/m3 (11) | 3.6 μg/m3 (16) | 16.0 | |
| Feb. 28, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 5.6 μg/m3 (24) | 24.0 | |
| Feb. 28, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.7 μg/m3 (4) | 4.4 μg/m3 (19) | 19.0 | |
| Feb. 28, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.9 μg/m3 (5) | 3.9 μg/m3 (17) | 17.0 | |
| Feb. 28, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.2 μg/m3 (8) | 2.4 μg/m3 (10) | 10.0 | |
| Feb. 28, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.2 μg/m3 (9) | 4.6 μg/m3 (20) | 20.0 | |
| Feb. 28, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.9 μg/m3 (11) | 3.4 μg/m3 (15) | 15.0 | |
| Feb. 28, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.7 μg/m3 (9) | 3.4 μg/m3 (15) | 15.0 | |
| Feb. 28, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.5 μg/m3 (11) | 3.1 μg/m3 (13) | 13.0 | |
| Feb. 28, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.6 μg/m3 (7) | 4.4 μg/m3 (19) | 19.0 | |
| Feb. 28, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.8 μg/m3 (7) | 5.9 μg/m3 (25) | 25.0 | |
| Feb. 28, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.1 μg/m3 (4) | 3.9 μg/m3 (17) | 17.0 | |
| Feb. 28, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.7 μg/m3 (8) | 5.1 μg/m3 (22) | 22.0 | |
| Feb. 28, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.4 μg/m3 (10) | 7.8 μg/m3 (33) | 33.0 | |
| Feb. 28, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | 4.9 μg/m3 (21) | 21.0 | |
| Feb. 28, 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) | 5.4 μg/m3 (23) | 23.0 | |
| Feb. 28, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | 6.1 μg/m3 (26) | 26.0 | |
| Feb. 28, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.9 μg/m3 (6) | 3.1 μg/m3 (13) | 13.0 | |
| Feb. 28, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.8 μg/m3 (8) | 6.9 μg/m3 (29) | 29.0 | |
| Feb. 28, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 5.6 μg/m3 (24) | 24.0 | |
| Feb. 28, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.7 μg/m3 (9) | 6.4 μg/m3 (27) | 27.0 | |
| Feb. 28, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.6 μg/m3 (7) | 3.4 μg/m3 (15) | 15.0 | |
| Feb. 28, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.6 μg/m3 (6) | 4.1 μg/m3 (18) | 18.0 | |
| Feb. 28, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 5.9 μg/m3 (25) | 25.0 | |
| Feb. 27, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.5 μg/m3 (8) | 6.3 μg/m3 (27) | 27.0 | |
| Feb. 27, 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) | 2.4 μg/m3 (10) | 10.0 | |
| Feb. 27, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.9 μg/m3 (10) | 4.6 μg/m3 (20) | 20.0 | |
| Feb. 27, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.4 μg/m3 (9) | 6.4 μg/m3 (27) | 27.0 | |
| Feb. 27, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 5.1 μg/m3 (22) | 22.0 | |
| Feb. 27, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 1.9 μg/m3 (8) | 9.0 | |
| Feb. 27, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.7 μg/m3 (9) | 0.4 μg/m3 (2) | 9.0 | |
| Feb. 27, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.9 μg/m3 (6) | 3.1 μg/m3 (13) | 13.0 | |
| Feb. 27, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.4 μg/m3 (5) | 5.4 μg/m3 (23) | 23.0 | |
| Feb. 27, 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) | 4.1 μg/m3 (18) | 18.0 | |
| Feb. 27, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.6 μg/m3 (6) | 3.4 μg/m3 (15) | 15.0 | |
| Feb. 27, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 2.1 μg/m3 (9) | 9.0 | |
| Feb. 27, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.5 μg/m3 (7) | 1.2 μg/m3 (5) | 7.0 | |
| Feb. 27, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.4 μg/m3 (7) | 0.4 μg/m3 (2) | 7.0 | |
| Feb. 27, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.8 μg/m3 (12) | 1.1 μg/m3 (5) | 12.0 |