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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 21, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 4.0 μg/m3 (4) | -1.9 μg/m3 (0) | 37.0 | |
| Jan. 21, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 0.0 μg/m3 (0) | -2.9 μg/m3 (0) | 36.0 | |
| Jan. 21, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 1.0 μg/m3 (1) | -4.1 μg/m3 (0) | 36.0 | |
| Jan. 21, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 4.0 μg/m3 (4) | -3.0 μg/m3 (0) | 35.0 | |
| Jan. 21, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 3.0 μg/m3 (3) | 3.5 μg/m3 (15) | 27.0 | |
| Jan. 21, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 14.0 μg/m3 (13) | 6.5 μg/m3 (28) | 28.0 | |
| Jan. 21, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 17.0 μg/m3 (16) | 6.3 μg/m3 (27) | 27.0 | |
| Jan. 21, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 12.0 μg/m3 (12) | 16.7 μg/m3 (61) | 61.0 | |
| Jan. 21, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | 9.0 μg/m3 (9) | 12.8 μg/m3 (53) | 53.0 | |
| Jan. 21, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | 7.0 μg/m3 (7) | 6.8 μg/m3 (29) | 29.0 | |
| Jan. 21, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | 9.0 μg/m3 (9) | 7.5 μg/m3 (32) | 32.0 | |
| Jan. 21, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 8.0 μg/m3 (8) | 5.2 μg/m3 (22) | 22.0 | |
| Jan. 21, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 9.0 μg/m3 (9) | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 21, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 10.0 μg/m3 (10) | 15.1 μg/m3 (58) | 58.0 | |
| Jan. 21, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 21.0 μg/m3 (20) | 21.9 μg/m3 (72) | 72.0 | |
| Jan. 21, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 18.0 μg/m3 (17) | 14.4 μg/m3 (56) | 56.0 | |
| Jan. 21, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 9.0 μg/m3 (9) | 10.9 μg/m3 (46) | 46.0 | |
| Jan. 21, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 9.0 μg/m3 (9) | 7.7 μg/m3 (33) | 33.0 | |
| Jan. 21, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 3.0 μg/m3 (3) | 5.8 μg/m3 (25) | 26.0 | |
| Jan. 21, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 5.0 μg/m3 (5) | 3.6 μg/m3 (16) | 27.0 | |
| Jan. 21, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 12.0 μg/m3 (12) | 2.6 μg/m3 (11) | 30.0 | |
| Jan. 20, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 13.0 μg/m3 (13) | 1.7 μg/m3 (8) | 36.0 | |
| Jan. 20, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 2.0 μg/m3 (2) | 0.0 μg/m3 (0) | 38.0 | |
| Jan. 20, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 4.0 μg/m3 (4) | -4.2 μg/m3 (0) | 38.0 | |
| Jan. 20, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 3.0 μg/m3 (3) | 0.6 μg/m3 (3) | 38.0 | |
| Jan. 20, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 5.0 μg/m3 (5) | -3.1 μg/m3 (0) | 37.0 | |
| Jan. 20, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 1.0 μg/m3 (1) | -4.0 μg/m3 (0) | 36.0 | |
| Jan. 20, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 14.0 μg/m3 (13) | 3.8 μg/m3 (16) | 35.0 | |
| Jan. 20, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 27.0 μg/m3 (25) | 13.1 μg/m3 (54) | 54.0 | |
| Jan. 20, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 25.0 μg/m3 (24) | 9.4 μg/m3 (40) | 40.0 | |
| Jan. 20, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 18.0 μg/m3 (17) | 12.1 μg/m3 (51) | 51.0 | |
| Jan. 20, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 9.0 μg/m3 (9) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 20, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 4.0 μg/m3 (4) | 0.7 μg/m3 (3) | 21.0 | |
| Jan. 20, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 2.0 μg/m3 (2) | 3.8 μg/m3 (16) | 22.0 | |
| Jan. 20, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 7.0 μg/m3 (7) | 4.2 μg/m3 (18) | 23.0 | |
| Jan. 20, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 3.0 μg/m3 (3) | 2.1 μg/m3 (9) | 24.0 | |
| Jan. 20, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | -2.0 μg/m3 (0) | -1.3 μg/m3 (0) | 23.0 | |
| Jan. 20, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | -1.0 μg/m3 (0) | 0.2 μg/m3 (1) | 23.0 | |
| Jan. 20, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 3.0 μg/m3 (3) | 4.8 μg/m3 (20) | 23.0 | |
| Jan. 20, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 4.0 μg/m3 (4) | 8.2 μg/m3 (35) | 35.0 | |
| Jan. 20, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 2.0 μg/m3 (2) | 2.3 μg/m3 (10) | 25.0 | |
| Jan. 20, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 4.0 μg/m3 (4) | 5.4 μg/m3 (23) | 26.0 | |
| Jan. 20, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 0.0 μg/m3 (0) | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 20, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 2.0 μg/m3 (2) | 4.4 μg/m3 (19) | 31.0 | |
| Jan. 20, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 7.0 μg/m3 (7) | 8.5 μg/m3 (36) | 36.0 | |
| Jan. 19, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 3.0 μg/m3 (3) | 4.0 μg/m3 (17) | 34.0 | |
| Jan. 19, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 2.0 μg/m3 (2) | 1.3 μg/m3 (6) | 36.0 | |
| Jan. 19, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 1.0 μg/m3 (1) | -3.9 μg/m3 (0) | 37.0 | |
| Jan. 19, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | -3.0 μg/m3 (0) | -1.8 μg/m3 (0) | 37.0 | |
| Jan. 19, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 0.0 μg/m3 (0) | N/A | 36.0 | |
| Jan. 19, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 0.0 μg/m3 (0) | -0.1 μg/m3 (0) | 33.0 | |
| Jan. 19, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 1.0 μg/m3 (1) | -0.8 μg/m3 (0) | 32.0 | |
| Jan. 19, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | -2.0 μg/m3 (0) | -1.9 μg/m3 (0) | 32.0 | |
| Jan. 19, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 2.0 μg/m3 (2) | 2.8 μg/m3 (12) | 30.0 | |
| Jan. 19, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 2.0 μg/m3 (2) | 0.4 μg/m3 (2) | 33.0 | |
| Jan. 19, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 3.0 μg/m3 (3) | 0.1 μg/m3 (1) | 33.0 | |
| Jan. 19, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | -2.0 μg/m3 (0) | 1.8 μg/m3 (8) | 33.0 | |
| Jan. 19, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 2.0 μg/m3 (2) | 4.4 μg/m3 (19) | 33.0 | |
| Jan. 19, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 2.0 μg/m3 (2) | -1.0 μg/m3 (0) | 33.0 | |
| Jan. 19, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 5.0 μg/m3 (5) | 1.5 μg/m3 (7) | 33.0 | |
| Jan. 19, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 6.0 μg/m3 (6) | -1.7 μg/m3 (0) | 32.0 | |
| Jan. 19, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 10.0 μg/m3 (10) | 1.9 μg/m3 (8) | 28.0 | |
| Jan. 19, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 2.0 μg/m3 (2) | 3.7 μg/m3 (16) | 29.0 | |
| Jan. 19, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 3.0 μg/m3 (3) | 1.5 μg/m3 (7) | 30.0 | |
| Jan. 19, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 1.0 μg/m3 (1) | 1.5 μg/m3 (7) | 30.0 | |
| Jan. 19, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | -2.0 μg/m3 (0) | 0.9 μg/m3 (4) | 30.0 | |
| Jan. 19, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | -3.0 μg/m3 (0) | 1.8 μg/m3 (8) | 32.0 | |
| Jan. 19, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 5.0 μg/m3 (5) | 2.1 μg/m3 (9) | 31.0 | |
| Jan. 19, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 5.0 μg/m3 (5) | 3.4 μg/m3 (15) | 32.0 | |
| Jan. 18, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 10.0 μg/m3 (10) | 3.0 μg/m3 (13) | 35.0 | |
| Jan. 18, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 9.0 μg/m3 (9) | 1.1 μg/m3 (5) | 36.0 | |
| Jan. 18, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 3.0 μg/m3 (3) | -0.2 μg/m3 (0) | 35.0 | |
| Jan. 18, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 4.0 μg/m3 (4) | 1.5 μg/m3 (7) | 35.0 | |
| Jan. 18, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 7.0 μg/m3 (7) | 2.2 μg/m3 (10) | 36.0 | |
| Jan. 18, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 4.0 μg/m3 (4) | 0.2 μg/m3 (1) | 34.0 | |
| Jan. 18, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 3.0 μg/m3 (3) | 3.3 μg/m3 (14) | 33.0 | |
| Jan. 18, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 3.0 μg/m3 (3) | 3.1 μg/m3 (13) | 34.0 | |
| Jan. 18, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | -3.0 μg/m3 (0) | 2.6 μg/m3 (11) | 34.0 | |
| Jan. 18, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 6.0 μg/m3 (6) | -0.9 μg/m3 (0) | 32.0 | |
| Jan. 18, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 3.0 μg/m3 (3) | 0.7 μg/m3 (3) | 32.0 | |
| Jan. 18, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 2.0 μg/m3 (2) | 2.0 μg/m3 (9) | 31.0 | |
| Jan. 18, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 1.0 μg/m3 (1) | 2.4 μg/m3 (10) | 32.0 | |
| Jan. 18, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 3.0 μg/m3 (3) | 3.0 μg/m3 (13) | 30.0 | |
| Jan. 18, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 3.0 μg/m3 (3) | 2.3 μg/m3 (10) | 30.0 | |
| Jan. 18, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 11.0 μg/m3 (11) | -0.3 μg/m3 (0) | 33.0 | |
| Jan. 18, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 12.0 μg/m3 (12) | 3.3 μg/m3 (14) | 35.0 | |
| Jan. 18, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | -3.0 μg/m3 (0) | 0.5 μg/m3 (3) | 36.0 | |
| Jan. 18, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 0.0 μg/m3 (0) | 3.9 μg/m3 (17) | 36.0 | |
| Jan. 18, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 3.0 μg/m3 (3) | 3.7 μg/m3 (16) | 34.0 | |
| Jan. 18, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 5.0 μg/m3 (5) | 3.5 μg/m3 (15) | 35.0 | |
| Jan. 18, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 0.0 μg/m3 (0) | 2.5 μg/m3 (11) | 35.0 | |
| Jan. 18, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 7.0 μg/m3 (7) | N/A | 31.0 | |
| Jan. 18, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 5.0 μg/m3 (5) | N/A | 32.0 | |
| Jan. 17, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 8.0 μg/m3 (8) | 4.1 μg/m3 (18) | 32.0 | |
| Jan. 17, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 6.0 μg/m3 (6) | 2.4 μg/m3 (10) | 33.0 | |
| Jan. 17, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 2.0 μg/m3 (2) | -1.7 μg/m3 (0) | 22.0 | |
| Jan. 17, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | -1.0 μg/m3 (0) | -4.0 μg/m3 (0) | 23.0 | |
| Jan. 17, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 0.0 μg/m3 (0) | -3.7 μg/m3 (0) | 23.0 | |
| Jan. 17, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 0.0 μg/m3 (0) | -3.2 μg/m3 (0) | 25.0 | |
| Jan. 17, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 4.0 μg/m3 (4) | -0.2 μg/m3 (0) | 23.0 | |
| Jan. 17, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 9.0 μg/m3 (9) | 0.7 μg/m3 (3) | 24.0 | |
| Jan. 17, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 0.0 μg/m3 (0) | -1.5 μg/m3 (0) | 23.0 | |
| Jan. 17, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 2.0 μg/m3 (2) | -1.8 μg/m3 (0) | 24.0 | |
| Jan. 17, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | -1.0 μg/m3 (0) | 1.0 μg/m3 (5) | 23.0 | |
| Jan. 17, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 11.0 μg/m3 (11) | -0.5 μg/m3 (0) | 25.0 | |
| Jan. 17, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 6.0 μg/m3 (6) | -0.3 μg/m3 (0) | 24.0 | |
| Jan. 17, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | -1.0 μg/m3 (0) | -0.9 μg/m3 (0) | 19.0 | |
| Jan. 17, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 1.0 μg/m3 (1) | 2.1 μg/m3 (9) | 20.0 | |
| Jan. 17, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | -1.0 μg/m3 (0) | 3.2 μg/m3 (14) | 23.0 | |
| Jan. 17, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | -1.0 μg/m3 (0) | 1.1 μg/m3 (5) | 24.0 | |
| Jan. 17, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | -1.0 μg/m3 (0) | 2.9 μg/m3 (13) | 21.0 | |
| Jan. 17, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 3.0 μg/m3 (3) | 4.4 μg/m3 (19) | 23.0 | |
| Jan. 17, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 3.0 μg/m3 (3) | 5.6 μg/m3 (24) | 25.0 | |
| Jan. 17, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 4.0 μg/m3 (4) | 6.4 μg/m3 (27) | 29.0 | |
| Jan. 17, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 1.0 μg/m3 (1) | -1.6 μg/m3 (0) | 29.0 | |
| Jan. 17, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | -2.0 μg/m3 (0) | N/A | 30.0 | |
| Jan. 17, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 1.0 μg/m3 (1) | -4.1 μg/m3 (0) | 35.0 | |
| Jan. 16, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 2.5 μg/m3 (11) | 38.0 | |
| Jan. 16, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 5.0 μg/m3 (5) | 2.4 μg/m3 (10) | 38.0 | |
| Jan. 16, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 1.0 μg/m3 (1) | 1.0 μg/m3 (5) | 39.0 | |
| Jan. 16, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 1.0 μg/m3 (1) | -1.1 μg/m3 (0) | 38.0 | |
| Jan. 16, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 0.0 μg/m3 (0) | -2.7 μg/m3 (0) | 38.0 | |
| Jan. 16, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 4.0 μg/m3 (4) | 1.2 μg/m3 (5) | 38.0 | |
| Jan. 16, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 0.0 μg/m3 (0) | -2.6 μg/m3 (0) | 38.0 | |
| Jan. 16, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 3.0 μg/m3 (3) | 0.2 μg/m3 (1) | 34.0 | |
| Jan. 16, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 4.0 μg/m3 (4) | -0.1 μg/m3 (0) | 33.0 | |
| Jan. 16, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 1.0 μg/m3 (1) | 1.4 μg/m3 (6) | 33.0 | |
| Jan. 16, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 1.0 μg/m3 (1) | 3.0 μg/m3 (13) | 34.0 | |
| Jan. 16, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 3.0 μg/m3 (3) | 4.3 μg/m3 (18) | 36.0 | |
| Jan. 16, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 1.0 μg/m3 (1) | 0.9 μg/m3 (4) | 36.0 | |
| Jan. 16, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 5.0 μg/m3 (5) | 2.2 μg/m3 (10) | 33.0 | |
| Jan. 16, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 3.0 μg/m3 (3) | 0.6 μg/m3 (3) | 32.0 | |
| Jan. 16, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 7.0 μg/m3 (7) | 3.9 μg/m3 (17) | 33.0 | |
| Jan. 16, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 2.0 μg/m3 (2) | 0.9 μg/m3 (4) | 33.0 | |
| Jan. 16, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 6.0 μg/m3 (6) | 2.6 μg/m3 (11) | 33.0 | |
| Jan. 16, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 2.0 μg/m3 (2) | -0.4 μg/m3 (0) | 32.0 | |
| Jan. 16, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 5.0 μg/m3 (5) | 3.0 μg/m3 (13) | 23.0 | |
| Jan. 16, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 1.0 μg/m3 (1) | -0.1 μg/m3 (0) | 25.0 | |
| Jan. 16, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 1.0 μg/m3 (1) | 5.8 μg/m3 (25) | 27.0 | |
| Jan. 16, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 3.0 μg/m3 (3) | 4.1 μg/m3 (18) | 29.0 | |
| Jan. 16, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 3.0 μg/m3 (3) | 1.0 μg/m3 (5) | 33.0 | |
| Jan. 15, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | -4.0 μg/m3 (0) | 0.7 μg/m3 (3) | 33.0 | |
| Jan. 15, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 3.0 μg/m3 (3) | 0.5 μg/m3 (3) | 35.0 | |
| Jan. 15, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 2.0 μg/m3 (2) | -2.0 μg/m3 (0) | 36.0 | |
| Jan. 15, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 0.0 μg/m3 (0) | -2.6 μg/m3 (0) | 36.0 | |
| Jan. 15, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 5.0 μg/m3 (5) | -4.8 μg/m3 (0) | 36.0 | |
| Jan. 15, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 2.0 μg/m3 (2) | N/A | 34.0 | |
| Jan. 15, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 4.0 μg/m3 (4) | N/A | 32.0 | |
| Jan. 15, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 7.0 μg/m3 (7) | 0.2 μg/m3 (1) | 25.0 | |
| Jan. 15, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | -3.0 μg/m3 (0) | 1.4 μg/m3 (6) | 24.0 | |
| Jan. 15, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 1.0 μg/m3 (1) | -0.2 μg/m3 (0) | 27.0 | |
| Jan. 15, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 2.0 μg/m3 (2) | 2.5 μg/m3 (11) | 26.0 | |
| Jan. 15, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 0.0 μg/m3 (0) | 0.2 μg/m3 (1) | 26.0 | |
| Jan. 15, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 2.0 μg/m3 (2) | 0.0 μg/m3 (0) | 30.0 | |
| Jan. 15, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 0.0 μg/m3 (0) | 0.3 μg/m3 (2) | 33.0 | |
| Jan. 15, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 3.0 μg/m3 (3) | 2.2 μg/m3 (10) | 35.0 | |
| Jan. 15, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 5.0 μg/m3 (5) | -1.4 μg/m3 (0) | 35.0 | |
| Jan. 15, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 2.0 μg/m3 (2) | 2.6 μg/m3 (11) | 36.0 | |
| Jan. 15, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 3.0 μg/m3 (3) | 2.4 μg/m3 (10) | 37.0 | |
| Jan. 15, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 3.0 μg/m3 (3) | 1.8 μg/m3 (8) | 38.0 | |
| Jan. 15, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 6.0 μg/m3 (6) | 4.7 μg/m3 (20) | 38.0 | |
| Jan. 15, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 5.0 μg/m3 (5) | 2.7 μg/m3 (12) | 37.0 | |
| Jan. 15, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 5.0 μg/m3 (5) | 6.4 μg/m3 (27) | 38.0 | |
| Jan. 15, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 12.0 μg/m3 (12) | -0.3 μg/m3 (0) | 37.0 | |
| Jan. 15, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 18.0 μg/m3 (17) | 3.2 μg/m3 (14) | 38.0 | |
| Jan. 14, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 13.0 μg/m3 (13) | 3.0 μg/m3 (13) | 38.0 | |
| Jan. 14, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 10.0 μg/m3 (10) | 2.5 μg/m3 (11) | 38.0 | |
| Jan. 14, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 7.0 μg/m3 (7) | -0.9 μg/m3 (0) | 38.0 |