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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 18, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 μg/m3 (48) | 4.9 μg/m3 (21) | 48.0 | |
| Sept. 18, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 μg/m3 (46) | 4.1 μg/m3 (18) | 46.0 | |
| Sept. 18, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 μg/m3 (51) | 2.4 μg/m3 (10) | 51.0 | |
| Sept. 18, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 μg/m3 (30) | 2.4 μg/m3 (10) | 30.0 | |
| Sept. 18, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (24) | 4.6 μg/m3 (20) | 24.0 | |
| Sept. 18, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (21) | 5.4 μg/m3 (23) | 23.0 | |
| Sept. 18, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | 4.6 μg/m3 (20) | 20.0 | |
| Sept. 18, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 3.1 μg/m3 (13) | 13.0 | |
| Sept. 18, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | 1.7 μg/m3 (8) | 12.0 | |
| Sept. 18, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 0.9 μg/m3 (4) | 6.0 | |
| Sept. 18, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 0.9 μg/m3 (4) | 9.0 | |
| Sept. 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) | 1.4 μg/m3 (6) | 7.0 | |
| Sept. 18, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 1.2 μg/m3 (5) | 15.0 | |
| Sept. 18, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 0.7 μg/m3 (3) | 19.0 | |
| Sept. 18, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 μg/m3 (27) | 1.9 μg/m3 (8) | 27.0 | |
| Sept. 18, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 μg/m3 (35) | 4.4 μg/m3 (19) | 35.0 | |
| Sept. 18, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 μg/m3 (33) | 5.4 μg/m3 (23) | 33.0 | |
| Sept. 18, 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) | 4.1 μg/m3 (18) | 25.0 | |
| Sept. 18, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (20) | 0.7 μg/m3 (3) | 20.0 | |
| Sept. 17, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 μg/m3 (45) | 1.9 μg/m3 (8) | 45.0 | |
| Sept. 17, 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) | -0.4 μg/m3 (0) | 10.0 | |
| Sept. 17, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | -2.4 μg/m3 (0) | 9.0 | |
| Sept. 17, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (10) | -1.7 μg/m3 (0) | 10.0 | |
| Sept. 17, 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) | -1.9 μg/m3 (0) | 8.0 | |
| Sept. 17, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 1.4 μg/m3 (6) | 16.0 | |
| Sept. 17, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (20) | 2.6 μg/m3 (11) | 20.0 | |
| Sept. 17, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (24) | 0.7 μg/m3 (3) | 24.0 | |
| Sept. 17, 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) | 0.9 μg/m3 (4) | 18.0 | |
| Sept. 17, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 0.2 μg/m3 (1) | 15.0 | |
| Sept. 17, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 2.4 μg/m3 (10) | 16.0 | |
| Sept. 17, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | 4.1 μg/m3 (18) | 18.0 | |
| Sept. 17, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 2.7 μg/m3 (12) | 12.0 | |
| Sept. 17, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | -1.4 μg/m3 (0) | 3.0 | |
| Sept. 17, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | -0.2 μg/m3 (0) | 8.0 | |
| Sept. 17, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 1.4 μg/m3 (6) | 9.0 | |
| Sept. 17, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | -0.7 μg/m3 (0) | 6.0 | |
| Sept. 17, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | -0.9 μg/m3 (0) | 14.0 | |
| Sept. 17, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 0.0 μg/m3 (0) | 11.0 | |
| Sept. 17, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 2.9 μg/m3 (13) | 18.0 | |
| Sept. 17, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 5.1 μg/m3 (22) | 22.0 | |
| Sept. 17, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 μg/m3 (44) | 5.6 μg/m3 (24) | 44.0 | |
| Sept. 17, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 μg/m3 (26) | 7.1 μg/m3 (30) | 30.0 | |
| Sept. 17, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (25) | 6.9 μg/m3 (29) | 29.0 | |
| Sept. 16, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 μg/m3 (25) | 6.1 μg/m3 (26) | 26.0 | |
| Sept. 16, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 μg/m3 (30) | 5.6 μg/m3 (24) | 30.0 | |
| Sept. 16, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (20) | 5.1 μg/m3 (22) | 22.0 | |
| Sept. 16, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (21) | 5.1 μg/m3 (22) | 22.0 | |
| Sept. 16, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 μg/m3 (31) | 2.7 μg/m3 (12) | 31.0 | |
| Sept. 16, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 μg/m3 (29) | 2.9 μg/m3 (13) | 29.0 | |
| Sept. 16, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 μg/m3 (37) | 2.4 μg/m3 (10) | 37.0 | |
| Sept. 16, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 μg/m3 (34) | 2.6 μg/m3 (11) | 34.0 | |
| Sept. 16, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 4.1 μg/m3 (18) | 18.0 | |
| Sept. 16, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 1.6 μg/m3 (7) | 18.0 | |
| Sept. 16, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 1.1 μg/m3 (5) | 16.0 | |
| Sept. 16, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (22) | 3.1 μg/m3 (13) | 22.0 | |
| Sept. 16, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (22) | 5.9 μg/m3 (25) | 25.0 | |
| Sept. 16, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (22) | 8.3 μg/m3 (35) | 35.0 | |
| Sept. 16, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (21) | 3.6 μg/m3 (16) | 21.0 | |
| Sept. 16, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (21) | 5.4 μg/m3 (23) | 23.0 | |
| Sept. 16, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (22) | 6.6 μg/m3 (28) | 28.0 | |
| Sept. 16, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 4.4 μg/m3 (19) | 19.0 | |
| Sept. 16, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 3.8 μg/m3 (16) | 16.0 | |
| Sept. 16, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (23) | 3.1 μg/m3 (13) | 23.0 | |
| Sept. 16, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 μg/m3 (33) | 5.3 μg/m3 (23) | 33.0 | |
| Sept. 16, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 μg/m3 (49) | 5.8 μg/m3 (25) | 49.0 | |
| Sept. 16, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 μg/m3 (33) | 2.9 μg/m3 (13) | 33.0 | |
| Sept. 16, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 μg/m3 (38) | 4.8 μg/m3 (20) | 38.0 | |
| Sept. 15, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 μg/m3 (52) | 6.1 μg/m3 (26) | 52.0 | |
| Sept. 15, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 67.0 μg/m3 (57) | 7.3 μg/m3 (31) | 57.0 | |
| Sept. 15, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 68.0 μg/m3 (58) | 6.4 μg/m3 (27) | 58.0 | |
| Sept. 15, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 88.0 μg/m3 (68) | 7.4 μg/m3 (31) | 68.0 | |
| Sept. 15, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 62.0 μg/m3 (55) | 3.9 μg/m3 (17) | 55.0 | |
| Sept. 15, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 μg/m3 (49) | 5.1 μg/m3 (22) | 49.0 | |
| Sept. 15, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 μg/m3 (35) | 5.4 μg/m3 (23) | 35.0 | |
| Sept. 15, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 μg/m3 (25) | 5.6 μg/m3 (24) | 25.0 | |
| Sept. 15, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 μg/m3 (26) | 0.9 μg/m3 (4) | 26.0 | |
| Sept. 15, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 3.6 μg/m3 (16) | 18.0 | |
| Sept. 15, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 6.1 μg/m3 (26) | 26.0 | |
| Sept. 15, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 3.6 μg/m3 (16) | 16.0 | |
| Sept. 15, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (10) | 2.9 μg/m3 (13) | 13.0 | |
| Sept. 15, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 5.6 μg/m3 (24) | 24.0 | |
| Sept. 15, 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) | 7.8 μg/m3 (33) | 33.0 | |
| Sept. 15, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | -1.0 μg/m3 (0) | 9.0 | |
| Sept. 15, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 0.9 μg/m3 (4) | 5.0 | |
| Sept. 15, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 3.9 μg/m3 (17) | 17.0 | |
| Sept. 15, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 7.3 μg/m3 (31) | 31.0 | |
| Sept. 15, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 μg/m3 (37) | 12.2 μg/m3 (52) | 52.0 | |
| Sept. 15, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 88.0 μg/m3 (68) | 13.0 μg/m3 (53) | 68.0 | |
| Sept. 15, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 μg/m3 (33) | 25.1 μg/m3 (79) | 79.0 | |
| Sept. 15, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (21) | 10.5 μg/m3 (44) | 44.0 | |
| Sept. 15, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 2.4 μg/m3 (10) | 17.0 | |
| Sept. 14, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (22) | 3.1 μg/m3 (13) | 22.0 | |
| Sept. 14, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (20) | 2.4 μg/m3 (10) | 20.0 | |
| Sept. 14, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | -1.0 μg/m3 (0) | 12.0 | |
| Sept. 14, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 0.0 μg/m3 (0) | 14.0 | |
| Sept. 14, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 1.1 μg/m3 (5) | 13.0 | |
| Sept. 14, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (25) | 3.4 μg/m3 (15) | 25.0 | |
| Sept. 14, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 4.1 μg/m3 (18) | 18.0 | |
| Sept. 14, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 2.9 μg/m3 (13) | 16.0 | |
| Sept. 14, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 3.9 μg/m3 (17) | 17.0 | |
| Sept. 14, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 2.6 μg/m3 (11) | 11.0 | |
| Sept. 14, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 1.1 μg/m3 (5) | 13.0 | |
| Sept. 14, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 1.1 μg/m3 (5) | 5.0 | |
| Sept. 14, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 2.6 μg/m3 (11) | 11.0 | |
| Sept. 14, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 1.9 μg/m3 (8) | 8.0 | |
| Sept. 14, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 3.1 μg/m3 (13) | 13.0 | |
| Sept. 14, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 3.9 μg/m3 (17) | 17.0 | |
| Sept. 14, 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) | 2.1 μg/m3 (9) | 12.0 | |
| Sept. 14, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 2.9 μg/m3 (13) | 13.0 | |
| Sept. 14, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 6.3 μg/m3 (27) | 27.0 | |
| Sept. 14, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 5.1 μg/m3 (22) | 22.0 | |
| Sept. 14, 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) | 4.4 μg/m3 (19) | 19.0 | |
| Sept. 14, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | 4.1 μg/m3 (18) | 18.0 | |
| Sept. 14, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | -0.5 μg/m3 (0) | 12.0 | |
| Sept. 14, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 0.7 μg/m3 (3) | 9.0 | |
| Sept. 13, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 0.9 μg/m3 (4) | 5.0 | |
| Sept. 13, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | -0.7 μg/m3 (0) | 7.0 | |
| Sept. 13, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 0.4 μg/m3 (2) | 11.0 | |
| Sept. 13, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 0.9 μg/m3 (4) | 16.0 | |
| Sept. 13, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (22) | 1.4 μg/m3 (6) | 22.0 | |
| Sept. 13, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 μg/m3 (43) | 3.6 μg/m3 (16) | 43.0 | |
| Sept. 13, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 μg/m3 (40) | 5.4 μg/m3 (23) | 40.0 | |
| Sept. 13, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 62.0 μg/m3 (55) | 4.1 μg/m3 (18) | 55.0 | |
| Sept. 13, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 μg/m3 (45) | 5.9 μg/m3 (25) | 45.0 | |
| Sept. 13, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m3 (32) | 2.6 μg/m3 (11) | 32.0 | |
| Sept. 13, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (25) | 1.2 μg/m3 (5) | 25.0 | |
| Sept. 13, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 3.1 μg/m3 (13) | 17.0 | |
| Sept. 13, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | 2.1 μg/m3 (9) | 12.0 | |
| Sept. 13, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (13) | 0.0 μg/m3 (0) | 13.0 | |
| Sept. 13, 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) | 3.1 μg/m3 (13) | 13.0 | |
| Sept. 13, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 4.9 μg/m3 (21) | 21.0 | |
| Sept. 13, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (21) | 4.9 μg/m3 (21) | 21.0 | |
| Sept. 13, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (22) | 5.1 μg/m3 (22) | 22.0 | |
| Sept. 13, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (25) | 4.4 μg/m3 (19) | 25.0 | |
| Sept. 13, 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) | 4.1 μg/m3 (18) | 21.0 | |
| Sept. 13, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 3.6 μg/m3 (16) | 17.0 | |
| Sept. 13, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (21) | 4.1 μg/m3 (18) | 21.0 | |
| Sept. 13, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m3 (32) | 3.4 μg/m3 (15) | 32.0 | |
| Sept. 13, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (13) | 2.9 μg/m3 (13) | 13.0 | |
| Sept. 12, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 0.0 μg/m3 (0) | 18.0 | |
| Sept. 12, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | -0.2 μg/m3 (0) | 18.0 | |
| Sept. 12, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 2.4 μg/m3 (10) | 15.0 | |
| Sept. 12, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 2.4 μg/m3 (10) | 15.0 | |
| Sept. 12, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | 0.9 μg/m3 (4) | 12.0 | |
| Sept. 12, 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) | 4.4 μg/m3 (19) | 19.0 | |
| Sept. 12, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 6.4 μg/m3 (27) | 27.0 | |
| Sept. 12, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 0.7 μg/m3 (3) | 19.0 | |
| Sept. 12, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 1.9 μg/m3 (8) | 13.0 | |
| Sept. 12, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 3.9 μg/m3 (17) | 17.0 | |
| Sept. 12, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | 2.9 μg/m3 (13) | 13.0 | |
| Sept. 12, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 3.6 μg/m3 (16) | 19.0 | |
| Sept. 12, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 3.1 μg/m3 (13) | 13.0 | |
| Sept. 12, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 3.9 μg/m3 (17) | 19.0 | |
| Sept. 12, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 7.1 μg/m3 (30) | 30.0 | |
| Sept. 12, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 8.1 μg/m3 (34) | 34.0 | |
| Sept. 12, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (22) | 7.6 μg/m3 (32) | 32.0 | |
| Sept. 12, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 6.6 μg/m3 (28) | 28.0 | |
| Sept. 12, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 2.9 μg/m3 (13) | 18.0 | |
| Sept. 12, 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) | 1.2 μg/m3 (5) | 17.0 | |
| Sept. 12, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (25) | 4.1 μg/m3 (18) | 25.0 | |
| Sept. 12, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 6.1 μg/m3 (26) | 26.0 | |
| Sept. 12, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 2.4 μg/m3 (10) | 17.0 | |
| Sept. 12, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 4.4 μg/m3 (19) | 19.0 | |
| Sept. 11, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | 6.4 μg/m3 (27) | 27.0 | |
| Sept. 11, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (23) | 5.9 μg/m3 (25) | 25.0 | |
| Sept. 11, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (20) | 4.4 μg/m3 (19) | 20.0 | |
| Sept. 11, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (23) | 2.4 μg/m3 (10) | 23.0 | |
| Sept. 11, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 3.1 μg/m3 (13) | 15.0 |