Birney (Tongue Riv Rd) MT, US: 45.366151, -106.48982
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 29, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 17.0 μg/m3 (15) | -2.7 μg/m3 (0) | 23.0 | |
| Sept. 29, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | 39.0 μg/m3 (35) | -1.9 μg/m3 (0) | 35.0 | |
| Sept. 29, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | 33.0 μg/m3 (30) | -0.4 μg/m3 (0) | 30.0 | |
| Sept. 29, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | 32.0 μg/m3 (29) | 4.2 μg/m3 (18) | 29.0 | |
| Sept. 29, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | 32.0 μg/m3 (29) | 4.8 μg/m3 (20) | 29.0 | |
| Sept. 29, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | 11.0 μg/m3 (10) | 3.1 μg/m3 (13) | 13.0 | |
| Sept. 29, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | 6.0 μg/m3 (5) | 2.5 μg/m3 (10) | 13.0 | |
| Sept. 29, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | 4.0 μg/m3 (4) | 2.6 μg/m3 (11) | 18.0 | |
| Sept. 29, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | 20.0 μg/m3 (18) | 0.6 μg/m3 (2) | 18.0 | |
| Sept. 29, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 14.0 μg/m3 (13) | 1.7 μg/m3 (7) | 19.0 | |
| Sept. 29, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | 3.0 μg/m3 (3) | 2.1 μg/m3 (9) | 22.0 | |
| Sept. 29, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | 9.0 μg/m3 (8) | 2.0 μg/m3 (8) | 21.0 | |
| Sept. 29, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | 14.0 μg/m3 (13) | 5.1 μg/m3 (21) | 21.0 | |
| Sept. 29, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | 43.0 μg/m3 (39) | 5.8 μg/m3 (24) | 39.0 | |
| Sept. 29, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | 68.0 μg/m3 (56) | 10.7 μg/m3 (45) | 56.0 | |
| Sept. 29, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 59.0 μg/m3 (52) | 7.8 μg/m3 (32) | 52.0 | |
| Sept. 29, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | 6.0 μg/m3 (5) | 2.2 μg/m3 (9) | 27.0 | |
| Sept. 28, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 0.0 μg/m3 (0) | 1.8 μg/m3 (8) | 29.0 | |
| Sept. 28, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 4.0 μg/m3 (4) | -2.4 μg/m3 (0) | 29.0 | |
| Sept. 28, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 8.0 μg/m3 (7) | 0.7 μg/m3 (3) | 29.0 | |
| Sept. 28, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 1.0 μg/m3 (1) | -1.1 μg/m3 (0) | 28.0 | |
| Sept. 28, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 5.0 μg/m3 (5) | -0.6 μg/m3 (0) | 28.0 | |
| Sept. 28, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 4.0 μg/m3 (4) | -4.5 μg/m3 (0) | 28.0 | |
| Sept. 28, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 12.0 μg/m3 (11) | 2.3 μg/m3 (10) | 28.0 | |
| Sept. 28, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 17.0 μg/m3 (15) | -0.2 μg/m3 (0) | 25.0 | |
| Sept. 28, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | 13.0 μg/m3 (12) | 0.2 μg/m3 (1) | 20.0 | |
| Sept. 28, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | 11.0 μg/m3 (10) | -0.7 μg/m3 (0) | 13.0 | |
| Sept. 28, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | 10.0 μg/m3 (9) | 4.6 μg/m3 (19) | 19.0 | |
| Sept. 28, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | 5.0 μg/m3 (5) | 1.1 μg/m3 (5) | 10.0 | |
| Sept. 28, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | 4.0 μg/m3 (4) | 2.1 μg/m3 (9) | 12.0 | |
| Sept. 28, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | 4.0 μg/m3 (4) | 1.4 μg/m3 (6) | 11.0 | |
| Sept. 28, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | 5.0 μg/m3 (5) | 3.5 μg/m3 (15) | 15.0 | |
| Sept. 28, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | 7.0 μg/m3 (6) | 4.4 μg/m3 (18) | 18.0 | |
| Sept. 28, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | 2.0 μg/m3 (2) | -0.5 μg/m3 (0) | 15.0 | |
| Sept. 28, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | 1.0 μg/m3 (1) | 1.4 μg/m3 (6) | 15.0 | |
| Sept. 28, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | 6.0 μg/m3 (5) | -0.3 μg/m3 (0) | 13.0 | |
| Sept. 28, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | 8.0 μg/m3 (7) | 4.7 μg/m3 (20) | 20.0 | |
| Sept. 28, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | 15.0 μg/m3 (14) | 2.2 μg/m3 (9) | 15.0 | |
| Sept. 28, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 10.0 μg/m3 (9) | 6.6 μg/m3 (28) | 28.0 | |
| Sept. 28, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 6.0 μg/m3 (5) | 5.8 μg/m3 (24) | 25.0 | |
| Sept. 28, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 1.0 μg/m3 (1) | 1.4 μg/m3 (6) | 28.0 | |
| Sept. 27, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 0.0 μg/m3 (0) | 1.8 μg/m3 (8) | 29.0 | |
| Sept. 27, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 3.0 μg/m3 (3) | 4.6 μg/m3 (19) | 30.0 | |
| Sept. 27, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 8.0 μg/m3 (7) | 3.3 μg/m3 (14) | 28.0 | |
| Sept. 27, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 8.0 μg/m3 (7) | 0.5 μg/m3 (2) | 29.0 | |
| Sept. 27, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 8.0 μg/m3 (7) | 1.9 μg/m3 (8) | 28.0 | |
| Sept. 27, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 7.0 μg/m3 (6) | 2.6 μg/m3 (11) | 28.0 | |
| Sept. 27, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 9.0 μg/m3 (8) | 0.5 μg/m3 (2) | 28.0 | |
| Sept. 27, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 4.0 μg/m3 (4) | 2.2 μg/m3 (9) | 28.0 | |
| Sept. 27, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 2.0 μg/m3 (2) | 2.4 μg/m3 (10) | 28.0 | |
| Sept. 27, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 9.0 μg/m3 (8) | -0.2 μg/m3 (0) | 28.0 | |
| Sept. 27, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 7.0 μg/m3 (6) | 3.9 μg/m3 (16) | 26.0 | |
| Sept. 27, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 5.0 μg/m3 (5) | 4.0 μg/m3 (17) | 26.0 | |
| Sept. 27, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 4.0 μg/m3 (4) | 2.3 μg/m3 (10) | 24.0 | |
| Sept. 27, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 6.0 μg/m3 (5) | 2.4 μg/m3 (10) | 24.0 | |
| Sept. 27, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 8.0 μg/m3 (7) | 2.8 μg/m3 (12) | 22.0 | |
| Sept. 27, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 11.0 μg/m3 (10) | 2.1 μg/m3 (9) | 25.0 | |
| Sept. 27, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 20.0 μg/m3 (18) | 1.3 μg/m3 (5) | 31.0 | |
| Sept. 27, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 5.0 μg/m3 (5) | 3.6 μg/m3 (15) | 28.0 | |
| Sept. 27, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | 7.0 μg/m3 (6) | 4.5 μg/m3 (19) | 19.0 | |
| Sept. 27, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | 8.0 μg/m3 (7) | 2.9 μg/m3 (12) | 12.0 | |
| Sept. 27, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | 14.0 μg/m3 (13) | 2.0 μg/m3 (8) | 14.0 | |
| Sept. 27, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | 15.0 μg/m3 (14) | 1.1 μg/m3 (5) | 18.0 | |
| Sept. 27, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 12.0 μg/m3 (11) | 8.0 μg/m3 (33) | 33.0 | |
| Sept. 27, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 11.0 μg/m3 (10) | 5.3 μg/m3 (22) | 28.0 | |
| Sept. 26, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 20.0 μg/m3 (18) | 1.9 μg/m3 (8) | 33.0 | |
| Sept. 26, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 22.0 μg/m3 (20) | -0.4 μg/m3 (0) | 35.0 | |
| Sept. 26, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 42.0 μg/m3 (38) | 3.0 μg/m3 (12) | 38.0 | |
| Sept. 26, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 36.0 μg/m3 (33) | 0.2 μg/m3 (1) | 33.0 | |
| Sept. 26, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 16.0 μg/m3 (15) | -0.2 μg/m3 (0) | 33.0 | |
| Sept. 26, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 6.0 μg/m3 (5) | -1.2 μg/m3 (0) | 32.0 | |
| Sept. 26, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 4.0 μg/m3 (4) | -0.7 μg/m3 (0) | 29.0 | |
| Sept. 26, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 5.0 μg/m3 (5) | -1.4 μg/m3 (0) | 26.0 | |
| Sept. 26, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 23.0 μg/m3 (21) | 8.7 μg/m3 (36) | 36.0 | |
| Sept. 26, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | 8.0 μg/m3 (7) | 8.3 μg/m3 (35) | 35.0 | |
| Sept. 26, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | 11.0 μg/m3 (10) | 12.0 μg/m3 (50) | 50.0 | |
| Sept. 26, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | 18.0 μg/m3 (16) | 10.0 μg/m3 (42) | 42.0 | |
| Sept. 26, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | 20.0 μg/m3 (18) | 10.3 μg/m3 (43) | 43.0 | |
| Sept. 26, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | 22.0 μg/m3 (20) | 9.7 μg/m3 (40) | 40.0 | |
| Sept. 26, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | 25.0 μg/m3 (23) | 7.7 μg/m3 (32) | 32.0 | |
| Sept. 26, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | 38.0 μg/m3 (35) | 9.2 μg/m3 (38) | 38.0 | |
| Sept. 26, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | 79.0 μg/m3 (62) | 13.7 μg/m3 (54) | 62.0 | |
| Sept. 26, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | 48.0 μg/m3 (44) | 11.9 μg/m3 (50) | 50.0 | |
| Sept. 26, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | 24.0 μg/m3 (22) | 8.3 μg/m3 (35) | 35.0 | |
| Sept. 26, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 76.0 μg/m3 (60) | 14.1 μg/m3 (54) | 60.0 | |
| Sept. 26, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 154.0 μg/m3 (100) | 31.7 μg/m3 (92) | 100.0 | |
| Sept. 26, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 112.0 μg/m3 (78) | 20.7 μg/m3 (69) | 78.0 | |
| Sept. 26, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 46.0 μg/m3 (42) | 12.5 μg/m3 (51) | 51.0 | |
| Sept. 26, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 24.0 μg/m3 (22) | -1.7 μg/m3 (0) | 24.0 | |
| Sept. 25, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 37.0 μg/m3 (34) | 10.2 μg/m3 (42) | 42.0 | |
| Sept. 25, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 50.0 μg/m3 (45) | 10.6 μg/m3 (44) | 45.0 | |
| Sept. 25, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 50.0 μg/m3 (45) | 5.2 μg/m3 (22) | 45.0 | |
| Sept. 25, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | 89.0 μg/m3 (67) | 19.4 μg/m3 (66) | 67.0 | |
| Sept. 25, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 74.0 μg/m3 (60) | 11.4 μg/m3 (48) | 60.0 | |
| Sept. 25, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 65.0 μg/m3 (55) | 11.4 μg/m3 (48) | 55.0 | |
| Sept. 25, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 39.0 μg/m3 (35) | 4.9 μg/m3 (20) | 35.0 | |
| Sept. 25, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 44.0 μg/m3 (40) | 6.2 μg/m3 (26) | 40.0 | |
| Sept. 25, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 49.0 μg/m3 (45) | 5.6 μg/m3 (23) | 45.0 | |
| Sept. 25, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 184.0 μg/m3 (114) | 26.2 μg/m3 (80) | 114.0 | |
| Sept. 25, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | 64.0 μg/m3 (54) | 14.9 μg/m3 (56) | 56.0 | |
| Sept. 25, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | 35.0 μg/m3 (32) | 7.6 μg/m3 (32) | 32.0 | |
| Sept. 25, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | 31.0 μg/m3 (28) | 4.7 μg/m3 (20) | 28.0 | |
| Sept. 25, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 4.0 μg/m3 (4) | 2.3 μg/m3 (10) | 19.0 | |
| Sept. 25, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | 2.0 μg/m3 (2) | 4.1 μg/m3 (17) | 20.0 | |
| Sept. 25, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 3.0 μg/m3 (3) | 1.4 μg/m3 (6) | 22.0 | |
| Sept. 25, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 8.0 μg/m3 (7) | 3.7 μg/m3 (15) | 23.0 | |
| Sept. 25, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 6.0 μg/m3 (5) | 1.6 μg/m3 (7) | 29.0 | |
| Sept. 25, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | 16.0 μg/m3 (15) | 6.1 μg/m3 (25) | 32.0 | |
| Sept. 25, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 20.0 μg/m3 (18) | 9.6 μg/m3 (40) | 40.0 | |
| Sept. 25, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 25.0 μg/m3 (23) | 9.8 μg/m3 (41) | 41.0 | |
| Sept. 25, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 32.0 μg/m3 (29) | 14.8 μg/m3 (56) | 56.0 | |
| Sept. 25, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 52.0 μg/m3 (47) | 16.4 μg/m3 (59) | 59.0 | |
| Sept. 25, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 77.0 μg/m3 (61) | 19.0 μg/m3 (65) | 65.0 | |
| Sept. 24, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 114.0 μg/m3 (80) | 22.5 μg/m3 (72) | 80.0 | |
| Sept. 24, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | 173.0 μg/m3 (109) | 33.9 μg/m3 (97) | 109.0 | |
| Sept. 24, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | 152.0 μg/m3 (98) | 30.0 μg/m3 (88) | 98.0 | |
| Sept. 24, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 82.0 μg/m3 (64) | 17.8 μg/m3 (62) | 64.0 | |
| Sept. 24, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 36.0 μg/m3 (33) | 10.7 μg/m3 (45) | 45.0 | |
| Sept. 24, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 49.0 μg/m3 (45) | 15.3 μg/m3 (57) | 57.0 | |
| Sept. 24, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 46.0 μg/m3 (42) | 18.3 μg/m3 (63) | 63.0 | |
| Sept. 24, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 73.0 μg/m3 (59) | 20.2 μg/m3 (67) | 67.0 | |
| Sept. 24, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | 43.0 μg/m3 (39) | 17.6 μg/m3 (62) | 62.0 | |
| Sept. 24, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | 51.0 μg/m3 (46) | 18.2 μg/m3 (63) | 63.0 | |
| Sept. 24, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | 51.0 μg/m3 (46) | 15.3 μg/m3 (57) | 57.0 | |
| Sept. 24, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | 32.0 μg/m3 (29) | 16.1 μg/m3 (59) | 59.0 | |
| Sept. 24, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | 29.0 μg/m3 (26) | 18.9 μg/m3 (65) | 65.0 | |
| Sept. 24, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | 23.0 μg/m3 (21) | 16.9 μg/m3 (60) | 60.0 | |
| Sept. 24, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | 26.0 μg/m3 (24) | 16.2 μg/m3 (59) | 59.0 | |
| Sept. 24, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | 28.0 μg/m3 (25) | 14.4 μg/m3 (55) | 55.0 | |
| Sept. 24, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | 28.0 μg/m3 (25) | 18.6 μg/m3 (64) | 64.0 | |
| Sept. 24, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | 51.0 μg/m3 (46) | 22.5 μg/m3 (72) | 72.0 | |
| Sept. 24, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | 103.0 μg/m3 (74) | 30.0 μg/m3 (88) | 88.0 | |
| Sept. 24, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | 64.0 μg/m3 (54) | 28.3 μg/m3 (85) | 85.0 | |
| Sept. 24, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 78.0 μg/m3 (62) | 28.4 μg/m3 (85) | 85.0 | |
| Sept. 24, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 99.0 μg/m3 (72) | 36.9 μg/m3 (104) | 104.0 | |
| Sept. 24, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 81.0 μg/m3 (63) | 35.3 μg/m3 (100) | 100.0 | |
| Sept. 24, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | 50.0 μg/m3 (45) | 22.5 μg/m3 (72) | 72.0 | |
| Sept. 23, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | 13.0 μg/m3 (12) | 19.4 μg/m3 (66) | 66.0 | |
| Sept. 23, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | 41.0 μg/m3 (37) | 17.6 μg/m3 (62) | 62.0 | |
| Sept. 23, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | 101.0 μg/m3 (73) | 28.1 μg/m3 (84) | 84.0 | |
| Sept. 23, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | 29.0 μg/m3 (26) | 15.0 μg/m3 (56) | 56.0 | |
| Sept. 23, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 24.0 μg/m3 (22) | 12.2 μg/m3 (50) | 50.0 | |
| Sept. 23, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | 27.0 μg/m3 (25) | 8.2 μg/m3 (34) | 35.0 | |
| Sept. 23, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 μg/m3 (30) | 11.3 μg/m3 (47) | 47.0 | |
| Sept. 23, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 μg/m3 (38) | 11.8 μg/m3 (49) | 49.0 | |
| Sept. 23, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 85.0 μg/m3 (65) | 19.6 μg/m3 (66) | 66.0 | |
| Sept. 23, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 38.4 μg/m3 (107) | 107.0 | |
| Sept. 23, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 131.0 μg/m3 (88) | 26.5 μg/m3 (81) | 88.0 | |
| Sept. 23, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | 84.0 μg/m3 (64) | 23.7 μg/m3 (75) | 75.0 | |
| Sept. 23, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 25.4 μg/m3 (79) | 79.0 | |
| Sept. 23, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 20.0 μg/m3 (18) | 16.4 μg/m3 (59) | 59.0 | |
| Sept. 23, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 26.0 μg/m3 (24) | 15.8 μg/m3 (58) | 58.0 | |
| Sept. 23, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 25.0 μg/m3 (23) | 13.0 μg/m3 (52) | 52.0 | |
| Sept. 23, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | 37.0 μg/m3 (34) | 13.9 μg/m3 (54) | 54.0 | |
| Sept. 23, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | 24.0 μg/m3 (22) | 13.4 μg/m3 (53) | 53.0 | |
| Sept. 23, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 36.0 μg/m3 (33) | 14.6 μg/m3 (56) | 56.0 | |
| Sept. 23, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 55.0 μg/m3 (50) | 19.0 μg/m3 (65) | 65.0 | |
| Sept. 23, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 96.0 μg/m3 (70) | 27.9 μg/m3 (84) | 84.0 | |
| Sept. 23, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 73.0 μg/m3 (59) | 21.7 μg/m3 (71) | 71.0 | |
| Sept. 23, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | 52.0 μg/m3 (47) | 17.8 μg/m3 (62) | 62.0 | |
| Sept. 23, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | 31.0 μg/m3 (28) | 9.4 μg/m3 (39) | 42.0 | |
| Sept. 22, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (44) | N/A | 8.0 μg/m3 (7) | 14.5 μg/m3 (55) | 55.0 | |
| Sept. 22, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 ppb (45) | N/A | 21.0 μg/m3 (19) | 10.8 μg/m3 (45) | 45.0 | |
| Sept. 22, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 ppb (45) | N/A | 22.0 μg/m3 (20) | 12.9 μg/m3 (52) | 52.0 | |
| Sept. 22, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | 15.0 μg/m3 (14) | 5.3 μg/m3 (22) | 42.0 | |
| Sept. 22, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 10.0 μg/m3 (9) | 1.0 μg/m3 (4) | 35.0 | |
| Sept. 22, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 12.0 μg/m3 (11) | 0.8 μg/m3 (3) | 33.0 | |
| Sept. 22, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 25.0 μg/m3 (23) | 4.8 μg/m3 (20) | 30.0 |