Columbia Falls (Talbot Rd) MT, US: 48.363694, -114.189272
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 22, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 7.0 μg/m3 (30) | 30.0 | |
| Sept. 22, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 μg/m3 (28) | 7.4 μg/m3 (31) | 31.0 | |
| Sept. 22, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 4.1 μg/m3 (18) | 18.0 | |
| Sept. 22, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 4.6 μg/m3 (20) | 20.0 | |
| Sept. 22, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 3.4 μg/m3 (15) | 15.0 | |
| Sept. 22, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 5.2 μg/m3 (22) | 22.0 | |
| Sept. 22, 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) | 3.0 μg/m3 (13) | 13.0 | |
| Sept. 22, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 1.2 μg/m3 (5) | 6.0 | |
| Sept. 22, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 2.9 μg/m3 (13) | 13.0 | |
| Sept. 22, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 22, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 1.8 μg/m3 (8) | 8.0 | |
| Sept. 22, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 0.1 μg/m3 (1) | 9.0 | |
| Sept. 22, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 1.0 μg/m3 (5) | 11.0 | |
| Sept. 22, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (10) | 2.8 μg/m3 (12) | 12.0 | |
| Sept. 22, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 2.8 μg/m3 (12) | 12.0 | |
| Sept. 22, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 1.3 μg/m3 (6) | 6.0 | |
| Sept. 21, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 1.3 μg/m3 (6) | 9.0 | |
| Sept. 21, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | -1.1 μg/m3 (0) | 11.0 | |
| Sept. 21, 2021, 9 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 (0) | 16.0 | |
| Sept. 21, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | -0.4 μg/m3 (0) | 3.0 | |
| Sept. 21, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.8 μg/m3 (4) | 4.0 | |
| Sept. 21, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 4.5 μg/m3 (19) | 19.0 | |
| Sept. 21, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 15.0 μg/m3 (58) | 58.0 | |
| Sept. 21, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 10.6 μg/m3 (45) | 45.0 | |
| Sept. 21, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 6.7 μg/m3 (28) | 28.0 | |
| Sept. 21, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 5.6 μg/m3 (24) | 24.0 | |
| Sept. 21, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 4.9 μg/m3 (21) | 21.0 | |
| Sept. 21, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 0.7 μg/m3 (3) | 3.0 | |
| Sept. 21, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 2.6 μg/m3 (11) | 11.0 | |
| Sept. 21, 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) | 4.9 μg/m3 (21) | 21.0 | |
| Sept. 21, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 3.4 μg/m3 (15) | 15.0 | |
| Sept. 21, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 3.4 μg/m3 (15) | 15.0 | |
| Sept. 21, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 2.6 μg/m3 (11) | 11.0 | |
| Sept. 21, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.4 μg/m3 (10) | 10.0 | |
| Sept. 21, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 3.4 μg/m3 (15) | 15.0 | |
| Sept. 21, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 3.5 μg/m3 (15) | 15.0 | |
| Sept. 21, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 1.8 μg/m3 (8) | 8.0 | |
| Sept. 21, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | -0.1 μg/m3 (0) | 0.0 | |
| Sept. 21, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -2.0 μg/m3 (0) | 0.5 μg/m3 (3) | 3.0 | |
| Sept. 21, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 1.5 μg/m3 (7) | 7.0 | |
| Sept. 20, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 0.5 μg/m3 (3) | 3.0 | |
| Sept. 20, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 1.8 μg/m3 (8) | 8.0 | |
| Sept. 20, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 3.8 μg/m3 (16) | 16.0 | |
| Sept. 20, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 2.3 μg/m3 (10) | 10.0 | |
| Sept. 20, 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) | 1.8 μg/m3 (8) | 8.0 | |
| Sept. 20, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 2.0 μg/m3 (9) | 9.0 | |
| Sept. 20, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 0.3 μg/m3 (2) | 8.0 | |
| Sept. 20, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 0.9 μg/m3 (4) | 4.0 | |
| Sept. 20, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 1.9 μg/m3 (8) | 8.0 | |
| Sept. 20, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 1.9 μg/m3 (8) | 8.0 | |
| Sept. 20, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.2 μg/m3 (5) | 5.0 | |
| Sept. 20, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 0.2 μg/m3 (1) | 1.0 | |
| Sept. 20, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.5 μg/m3 (7) | 7.0 | |
| Sept. 20, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 1.9 μg/m3 (8) | 8.0 | |
| Sept. 20, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 1.9 μg/m3 (8) | 8.0 | |
| Sept. 20, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 1.5 μg/m3 (7) | 7.0 | |
| Sept. 20, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.4 μg/m3 (6) | 6.0 | |
| Sept. 20, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 0.7 μg/m3 (3) | 3.0 | |
| Sept. 20, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 1.2 μg/m3 (5) | 5.0 | |
| Sept. 20, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.5 μg/m3 (11) | 11.0 | |
| Sept. 20, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.5 μg/m3 (7) | 7.0 | |
| Sept. 20, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | -1.9 μg/m3 (0) | 0.0 | |
| Sept. 20, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | -1.9 μg/m3 (0) | 0.0 | |
| Sept. 20, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 3.5 μg/m3 (15) | 15.0 | |
| Sept. 19, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | -1.1 μg/m3 (0) | 2.0 | |
| Sept. 19, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -2.0 μg/m3 (0) | -2.1 μg/m3 (0) | 0.0 | |
| Sept. 19, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 6.2 μg/m3 (26) | 26.0 | |
| Sept. 19, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -1.0 μg/m3 (0) | 8.2 μg/m3 (35) | 35.0 | |
| Sept. 19, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (21) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 19, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 2.0 μg/m3 (9) | 9.0 | |
| Sept. 19, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 2.0 μg/m3 (9) | 9.0 | |
| Sept. 19, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 4.2 μg/m3 (18) | 18.0 | |
| Sept. 19, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 19, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 0.9 μg/m3 (4) | 4.0 | |
| Sept. 19, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 0.4 μg/m3 (2) | 2.0 | |
| Sept. 19, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 1.4 μg/m3 (6) | 6.0 | |
| Sept. 19, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.7 μg/m3 (8) | 8.0 | |
| Sept. 19, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 0.2 μg/m3 (1) | 1.0 | |
| Sept. 19, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | -3.3 μg/m3 (0) | 0.0 | |
| Sept. 19, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | N/A | 2.0 | |
| Sept. 19, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | N/A | 2.0 | |
| Sept. 19, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | -3.0 μg/m3 (0) | 5.0 | |
| Sept. 19, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | -0.1 μg/m3 (0) | 0.0 | |
| Sept. 19, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -2.0 μg/m3 (0) | 0.8 μg/m3 (4) | 4.0 | |
| Sept. 19, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 1.3 μg/m3 (6) | 6.0 | |
| Sept. 19, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (10) | 2.5 μg/m3 (11) | 11.0 | |
| Sept. 19, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 0.5 μg/m3 (3) | 7.0 | |
| Sept. 19, 2021, midnight | 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 (0) | 5.0 | |
| Sept. 18, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 0.3 μg/m3 (2) | 3.0 | |
| Sept. 18, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 5.5 μg/m3 (23) | 23.0 | |
| Sept. 18, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 10.1 μg/m3 (43) | 43.0 | |
| Sept. 18, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 μg/m3 (26) | 17.3 μg/m3 (62) | 62.0 | |
| Sept. 18, 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) | 23.6 μg/m3 (76) | 76.0 | |
| Sept. 18, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 μg/m3 (50) | 29.0 μg/m3 (87) | 87.0 | |
| Sept. 18, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 14.5 μg/m3 (57) | 57.0 | |
| Sept. 18, 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) | 12.3 μg/m3 (52) | 52.0 | |
| Sept. 18, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 10.2 μg/m3 (43) | 43.0 | |
| Sept. 18, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | 7.4 μg/m3 (31) | 31.0 | |
| Sept. 18, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 7.7 μg/m3 (33) | 33.0 | |
| Sept. 18, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 9.9 μg/m3 (42) | 42.0 | |
| Sept. 18, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 10.1 μg/m3 (43) | 43.0 | |
| Sept. 18, 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) | 8.2 μg/m3 (35) | 35.0 | |
| Sept. 18, 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) | 8.5 μg/m3 (36) | 36.0 | |
| Sept. 18, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | 9.4 μg/m3 (40) | 40.0 | |
| Sept. 18, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (13) | 9.4 μg/m3 (40) | 40.0 | |
| 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) | 10.8 μg/m3 (46) | 46.0 | |
| Sept. 18, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 13.0 μg/m3 (53) | 53.0 | |
| Sept. 18, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 μg/m3 (25) | 13.3 μg/m3 (54) | 54.0 | |
| Sept. 18, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m3 (32) | 11.8 μg/m3 (50) | 50.0 | |
| Sept. 18, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (22) | 11.1 μg/m3 (47) | 47.0 | |
| Sept. 18, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (23) | 9.4 μg/m3 (40) | 40.0 | |
| 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) | 5.5 μg/m3 (23) | 23.0 | |
| Sept. 17, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 5.2 μg/m3 (22) | 22.0 | |
| Sept. 17, 2021, 10 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 | |
| Sept. 17, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 8.2 μg/m3 (35) | 35.0 | |
| Sept. 17, 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) | 21.5 μg/m3 (71) | 71.0 | |
| Sept. 17, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 μg/m3 (36) | 31.7 μg/m3 (93) | 93.0 | |
| Sept. 17, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 μg/m3 (44) | 15.0 μg/m3 (58) | 58.0 | |
| Sept. 17, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Sept. 17, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 1.5 μg/m3 (7) | 7.0 | |
| Sept. 17, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 3.6 μg/m3 (16) | 16.0 | |
| Sept. 17, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 4.4 μg/m3 (19) | 19.0 | |
| Sept. 17, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 4.6 μg/m3 (20) | 20.0 | |
| Sept. 17, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 4.9 μg/m3 (21) | 21.0 | |
| 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) | 1.9 μg/m3 (8) | 9.0 | |
| Sept. 17, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 2.4 μg/m3 (10) | 10.0 | |
| Sept. 17, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 4.6 μg/m3 (20) | 20.0 | |
| Sept. 17, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 5.1 μg/m3 (22) | 22.0 | |
| Sept. 17, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 4.9 μg/m3 (21) | 21.0 | |
| Sept. 17, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 3.1 μg/m3 (13) | 13.0 | |
| Sept. 17, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -3.0 μg/m3 (0) | 1.9 μg/m3 (8) | 8.0 | |
| Sept. 17, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 2.6 μg/m3 (11) | 11.0 | |
| Sept. 17, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 2.7 μg/m3 (12) | 12.0 | |
| Sept. 17, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 1.5 μg/m3 (7) | 7.0 | |
| Sept. 17, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 2.0 μg/m3 (9) | 9.0 | |
| Sept. 17, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 μg/m3 (28) | 3.0 μg/m3 (13) | 28.0 | |
| Sept. 16, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 0.5 μg/m3 (3) | 3.0 | |
| Sept. 16, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 2.0 μg/m3 (9) | 9.0 | |
| Sept. 16, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 3.2 μg/m3 (14) | 14.0 | |
| Sept. 16, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 1.3 μg/m3 (6) | 6.0 | |
| Sept. 16, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | -0.3 μg/m3 (0) | 4.0 | |
| Sept. 16, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | -0.8 μg/m3 (0) | 4.0 | |
| Sept. 16, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 0.3 μg/m3 (2) | 4.0 | |
| Sept. 16, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 2.3 μg/m3 (10) | 18.0 | |
| Sept. 16, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 2.5 μg/m3 (11) | 11.0 | |
| Sept. 16, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 1.4 μg/m3 (6) | 6.0 | |
| Sept. 16, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 1.9 μg/m3 (8) | 8.0 | |
| Sept. 16, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.9 μg/m3 (4) | 4.0 | |
| Sept. 16, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -4.0 μg/m3 (0) | 3.1 μg/m3 (13) | 13.0 | |
| Sept. 16, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 0.0 μg/m3 (0) | 2.0 | |
| Sept. 16, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | -4.5 μg/m3 (0) | 2.0 | |
| Sept. 16, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | -3.3 μg/m3 (0) | 3.0 | |
| Sept. 16, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | -2.6 μg/m3 (0) | 1.0 | |
| Sept. 16, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | -0.6 μg/m3 (0) | 4.0 | |
| Sept. 16, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | -0.3 μg/m3 (0) | 6.0 | |
| Sept. 16, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 1.3 μg/m3 (6) | 7.0 | |
| Sept. 16, 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) | 3.0 μg/m3 (13) | 13.0 | |
| Sept. 16, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (13) | 3.0 μg/m3 (13) | 13.0 | |
| Sept. 16, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 3.0 μg/m3 (13) | 16.0 | |
| Sept. 16, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 0.5 μg/m3 (3) | 8.0 | |
| Sept. 15, 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) | -1.6 μg/m3 (0) | 5.0 | |
| Sept. 15, 2021, 10 p.m. | 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 (0) | 4.0 | |
| Sept. 15, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | -2.1 μg/m3 (0) | 5.0 | |
| Sept. 15, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (8) | 0.3 μg/m3 (2) | 8.0 | |
| Sept. 15, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 0.0 μg/m3 (0) | 7.0 | |
| Sept. 15, 2021, 6 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. 15, 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) | 2.7 μg/m3 (12) | 13.0 | |
| Sept. 15, 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) | 5.9 μg/m3 (25) | 25.0 |