Butte (S Park Place) MT, US: 46.002399, -112.500893
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 4, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (21) | N/A | 21.0 | |
| April 4, 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) | N/A | 27.0 | |
| April 4, 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) | N/A | 32.0 | |
| April 4, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (25) | N/A | 25.0 | |
| April 4, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 μg/m3 (28) | N/A | 28.0 | |
| April 4, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | N/A | 13.0 | |
| April 3, 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) | N/A | 13.0 | |
| April 3, 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) | N/A | 20.0 | |
| April 3, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | N/A | 13.0 | |
| April 3, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 μg/m3 (33) | N/A | 33.0 | |
| April 3, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 μg/m3 (27) | N/A | 27.0 | |
| April 3, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 μg/m3 (28) | N/A | 28.0 | |
| April 3, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 μg/m3 (42) | N/A | 42.0 | |
| April 3, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 75.0 μg/m3 (61) | N/A | 61.0 | |
| April 3, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 μg/m3 (53) | N/A | 53.0 | |
| April 3, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 μg/m3 (30) | N/A | 30.0 | |
| April 3, 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) | N/A | 15.0 | |
| April 3, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (17) | N/A | 17.0 | |
| April 3, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | N/A | 13.0 | |
| April 3, 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) | N/A | 19.0 | |
| April 3, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 μg/m3 (30) | N/A | 30.0 | |
| April 3, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 μg/m3 (49) | N/A | 49.0 | |
| April 3, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 μg/m3 (42) | N/A | 42.0 | |
| April 3, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 70.0 μg/m3 (59) | N/A | 59.0 | |
| April 3, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 75.0 μg/m3 (61) | N/A | 61.0 | |
| April 3, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 μg/m3 (41) | N/A | 41.0 | |
| April 3, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 μg/m3 (46) | N/A | 46.0 | |
| April 3, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 μg/m3 (42) | N/A | 42.0 | |
| April 3, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | N/A | 18.0 | |
| April 3, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | N/A | 18.0 | |
| April 2, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (20) | N/A | 20.0 | |
| April 2, 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) | N/A | 16.0 | |
| April 2, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| April 2, 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) | N/A | 21.0 | |
| April 2, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (13) | N/A | 13.0 | |
| April 2, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 μg/m3 (31) | N/A | 31.0 | |
| April 2, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 μg/m3 (42) | N/A | 42.0 | |
| April 2, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 μg/m3 (53) | N/A | 53.0 | |
| April 2, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 μg/m3 (27) | N/A | 27.0 | |
| April 2, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 μg/m3 (29) | N/A | 29.0 | |
| April 2, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (22) | N/A | 22.0 | |
| April 2, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | N/A | 11.0 | |
| April 2, 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) | N/A | 10.0 | |
| April 2, 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) | N/A | 18.0 | |
| April 2, 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) | N/A | 21.0 | |
| April 2, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m3 (32) | N/A | 32.0 | |
| April 2, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 μg/m3 (50) | N/A | 50.0 | |
| April 2, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 μg/m3 (39) | N/A | 39.0 | |
| April 2, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (24) | N/A | 24.0 | |
| April 2, 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) | N/A | 23.0 | |
| April 2, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | N/A | 14.0 | |
| April 2, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 μg/m3 (31) | N/A | 31.0 | |
| April 2, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 μg/m3 (37) | N/A | 37.0 | |
| April 2, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (23) | N/A | 23.0 | |
| April 1, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | N/A | 11.0 | |
| April 1, 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) | N/A | 10.0 | |
| April 1, 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) | N/A | 16.0 | |
| April 1, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 2.0 μg/m3 (9) | 13.0 | |
| April 1, 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) | 2.2 μg/m3 (10) | 15.0 | |
| April 1, 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) | 2.7 μg/m3 (12) | 25.0 | |
| April 1, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 μg/m3 (30) | 2.5 μg/m3 (11) | 30.0 | |
| April 1, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 μg/m3 (45) | 22.7 μg/m3 (74) | 74.0 | |
| April 1, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 μg/m3 (49) | 18.6 μg/m3 (65) | 65.0 | |
| April 1, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 μg/m3 (34) | 16.2 μg/m3 (60) | 60.0 | |
| April 1, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 μg/m3 (29) | 14.9 μg/m3 (57) | 57.0 | |
| April 1, 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 | |
| April 1, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | 5.8 μg/m3 (25) | 25.0 | |
| April 1, 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) | 6.8 μg/m3 (29) | 29.0 | |
| April 1, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 10.2 μg/m3 (43) | 43.0 | |
| April 1, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 μg/m3 (29) | 10.8 μg/m3 (46) | 46.0 | |
| April 1, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 9.7 μg/m3 (41) | 41.0 | |
| April 1, 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) | 9.7 μg/m3 (41) | 41.0 | |
| April 1, 2021, 5 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 | |
| April 1, 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) | 3.4 μg/m3 (15) | 15.0 | |
| April 1, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (22) | 2.5 μg/m3 (11) | 22.0 | |
| April 1, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 μg/m3 (31) | -3.0 μg/m3 (0) | 31.0 | |
| April 1, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | N/A | 11.0 | |
| April 1, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 15.2 μg/m3 (58) | 58.0 | |
| March 31, 2021, 11 p.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 (3) | 12.0 | |
| March 31, 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) | 8.2 μg/m3 (35) | 35.0 | |
| March 31, 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) | 6.1 μg/m3 (26) | 26.0 | |
| March 31, 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) | 6.8 μg/m3 (29) | 29.0 | |
| March 31, 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) | 5.6 μg/m3 (24) | 24.0 | |
| March 31, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 6.6 μg/m3 (28) | 28.0 | |
| March 31, 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) | 8.2 μg/m3 (35) | 35.0 | |
| March 31, 2021, 4 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 | |
| March 31, 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) | 4.9 μg/m3 (21) | 21.0 | |
| March 31, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (20) | 5.8 μg/m3 (25) | 25.0 | |
| March 31, 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) | 5.8 μg/m3 (25) | 25.0 | |
| March 31, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 3.2 μg/m3 (14) | 14.0 | |
| March 31, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 4.4 μg/m3 (19) | 19.0 | |
| March 31, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 4.9 μg/m3 (21) | 21.0 | |
| March 31, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 3.9 μg/m3 (17) | 17.0 | |
| March 31, 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) | 5.6 μg/m3 (24) | 24.0 | |
| March 31, 2021, 7 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 | |
| March 31, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | 5.6 μg/m3 (24) | 24.0 | |
| March 31, 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) | 8.5 μg/m3 (36) | 36.0 | |
| March 31, 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) | 3.4 μg/m3 (15) | 15.0 | |
| March 31, 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) | 2.4 μg/m3 (10) | 10.0 | |
| March 31, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | 1.9 μg/m3 (8) | 8.0 | |
| March 31, 2021, 1 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 | |
| March 31, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | -0.4 μg/m3 (0) | 19.0 | |
| March 30, 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) | -1.6 μg/m3 (0) | 22.0 | |
| March 30, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 μg/m3 (27) | -1.6 μg/m3 (0) | 27.0 | |
| March 30, 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) | 1.7 μg/m3 (8) | 12.0 | |
| March 30, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 3.2 μg/m3 (14) | 14.0 | |
| March 30, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (9) | -1.1 μg/m3 (0) | 9.0 | |
| March 30, 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) | 5.3 μg/m3 (23) | 23.0 | |
| March 30, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 8.5 μg/m3 (36) | 36.0 | |
| March 30, 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) | 0.2 μg/m3 (1) | 6.0 | |
| March 30, 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) | 0.5 μg/m3 (3) | 8.0 | |
| March 30, 2021, 2 p.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 | |
| March 30, 2021, 1 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 (8) | 10.0 | |
| March 30, 2021, noon | 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 | |
| March 30, 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) | 2.2 μg/m3 (10) | 10.0 | |
| March 30, 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) | 0.5 μg/m3 (3) | 6.0 | |
| March 30, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (18) | 0.5 μg/m3 (3) | 18.0 | |
| March 30, 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) | 0.0 μg/m3 (0) | 17.0 | |
| March 30, 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) | -1.1 μg/m3 (0) | 13.0 | |
| March 30, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (25) | 0.0 μg/m3 (0) | 25.0 | |
| March 30, 2021, 5 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 | |
| March 30, 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) | 2.0 μg/m3 (9) | 9.0 | |
| March 30, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (12) | N/A | 12.0 | |
| March 30, 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) | N/A | 10.0 | |
| March 30, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (10) | 6.1 μg/m3 (26) | 26.0 | |
| March 30, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (10) | 5.3 μg/m3 (23) | 23.0 | |
| March 29, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 μg/m3 (26) | -0.6 μg/m3 (0) | 26.0 | |
| March 29, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 1.2 μg/m3 (5) | 19.0 | |
| March 29, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (10) | -4.5 μg/m3 (0) | 10.0 | |
| March 29, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | -0.3 μg/m3 (0) | 11.0 | |
| March 29, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 6.6 μg/m3 (28) | 28.0 | |
| March 29, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 2.9 μg/m3 (13) | 13.0 | |
| March 29, 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) | N/A | 15.0 | |
| March 29, 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) | 3.2 μg/m3 (14) | 14.0 | |
| March 29, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | -2.1 μg/m3 (0) | 0.0 | |
| March 29, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 0.2 μg/m3 (1) | 1.0 | |
| March 29, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | -0.2 μg/m3 (0) | 3.0 | |
| March 29, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | -0.4 μg/m3 (0) | 5.0 | |
| March 29, 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) | 1.2 μg/m3 (5) | 5.0 | |
| March 29, 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) | -0.8 μg/m3 (0) | 5.0 | |
| March 29, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (16) | -0.3 μg/m3 (0) | 16.0 | |
| March 29, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 1.2 μg/m3 (5) | 13.0 | |
| March 29, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 210.0 μg/m3 (129) | 5.4 μg/m3 (23) | 129.0 | |
| March 29, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 220.0 μg/m3 (134) | 6.1 μg/m3 (26) | 134.0 | |
| March 29, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 60.0 μg/m3 (54) | 1.7 μg/m3 (8) | 54.0 | |
| March 29, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 μg/m3 (53) | 1.7 μg/m3 (8) | 53.0 | |
| March 29, 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) | 14.5 μg/m3 (57) | 57.0 | |
| March 29, 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) | -1.8 μg/m3 (0) | 17.0 | |
| March 29, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 1.3 μg/m3 (6) | 11.0 | |
| March 29, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 μg/m3 (38) | 2.5 μg/m3 (11) | 38.0 | |
| March 28, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 μg/m3 (35) | 3.0 μg/m3 (13) | 35.0 | |
| March 28, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 μg/m3 (41) | 1.5 μg/m3 (7) | 41.0 | |
| March 28, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (25) | 1.0 μg/m3 (5) | 25.0 | |
| March 28, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 μg/m3 (30) | 1.5 μg/m3 (7) | 30.0 | |
| March 28, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 μg/m3 (44) | 3.4 μg/m3 (15) | 44.0 | |
| March 28, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 μg/m3 (30) | 3.2 μg/m3 (14) | 30.0 | |
| March 28, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (19) | 0.0 μg/m3 (0) | 19.0 | |
| March 28, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 2.2 μg/m3 (10) | 11.0 | |
| March 28, 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) | 3.9 μg/m3 (17) | 17.0 | |
| March 28, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (6) | 6.6 μg/m3 (28) | 28.0 | |
| March 28, 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) | 5.6 μg/m3 (24) | 24.0 | |
| March 28, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (7) | -0.4 μg/m3 (0) | 7.0 | |
| March 28, 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) | 7.1 μg/m3 (30) | 30.0 | |
| March 28, 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) | 9.0 μg/m3 (38) | 38.0 | |
| March 28, 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) | 4.1 μg/m3 (18) | 18.0 | |
| March 28, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 μg/m3 (29) | 4.1 μg/m3 (18) | 29.0 | |
| March 28, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 μg/m3 (31) | 17.9 μg/m3 (64) | 64.0 | |
| March 28, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 μg/m3 (36) | 3.9 μg/m3 (17) | 36.0 |