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. 28, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (24) | 11.3 μg/m3 (48) | 48.0 | |
| Sept. 28, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (20) | 8.3 μg/m3 (35) | 35.0 | |
| Sept. 28, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (23) | 6.6 μg/m3 (28) | 28.0 | |
| Sept. 28, 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) | 2.8 μg/m3 (12) | 18.0 | |
| Sept. 28, 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) | 2.6 μg/m3 (11) | 26.0 | |
| Sept. 28, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 28.0 μg/m3 (26) | 7.0 μg/m3 (30) | 30.0 | |
| Sept. 28, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 13.0 μg/m3 (13) | 8.7 μg/m3 (37) | 37.0 | |
| Sept. 28, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 14.0 μg/m3 (13) | 9.4 μg/m3 (40) | 40.0 | |
| Sept. 28, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 13.0 μg/m3 (13) | 6.6 μg/m3 (28) | 28.0 | |
| Sept. 28, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 16.0 μg/m3 (15) | 10.7 μg/m3 (45) | 45.0 | |
| Sept. 28, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 15.0 μg/m3 (14) | 8.3 μg/m3 (35) | 35.0 | |
| Sept. 28, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 16.0 μg/m3 (15) | 9.3 μg/m3 (39) | 39.0 | |
| Sept. 28, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 12.0 μg/m3 (12) | 7.6 μg/m3 (32) | 32.0 | |
| Sept. 28, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 25.0 μg/m3 (24) | 9.3 μg/m3 (39) | 39.0 | |
| Sept. 28, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 24.0 μg/m3 (23) | 14.0 μg/m3 (55) | 55.0 | |
| Sept. 28, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 31.0 μg/m3 (29) | 11.1 μg/m3 (47) | 47.0 | |
| Sept. 28, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 75.0 μg/m3 (61) | 23.8 μg/m3 (76) | 76.0 | |
| Sept. 28, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 132.0 μg/m3 (90) | 33.7 μg/m3 (97) | 97.0 | |
| Sept. 28, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 45.0 μg/m3 (125) | 125.0 | |
| Sept. 28, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 33.5 μg/m3 (97) | 97.0 | |
| Sept. 27, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | 16.0 μg/m3 (15) | 16.4 μg/m3 (61) | 61.0 | |
| Sept. 27, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | 16.0 μg/m3 (15) | 7.9 μg/m3 (33) | 50.0 | |
| Sept. 27, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | 19.0 μg/m3 (18) | 11.1 μg/m3 (47) | 50.0 | |
| Sept. 27, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | 18.0 μg/m3 (17) | 12.1 μg/m3 (51) | 51.0 | |
| Sept. 27, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | 16.0 μg/m3 (15) | 9.6 μg/m3 (40) | 49.0 | |
| Sept. 27, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | 12.0 μg/m3 (12) | 4.5 μg/m3 (19) | 47.0 | |
| Sept. 27, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 17.0 μg/m3 (16) | 5.5 μg/m3 (23) | 36.0 | |
| Sept. 27, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 22.0 μg/m3 (21) | 6.3 μg/m3 (27) | 28.0 | |
| Sept. 27, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 23.0 μg/m3 (22) | 4.9 μg/m3 (21) | 23.0 | |
| Sept. 27, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 19.0 μg/m3 (18) | 7.4 μg/m3 (31) | 31.0 | |
| Sept. 27, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 14.0 μg/m3 (13) | 8.7 μg/m3 (37) | 37.0 | |
| Sept. 27, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 20.0 μg/m3 (19) | 6.9 μg/m3 (29) | 29.0 | |
| Sept. 27, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 40.0 μg/m3 (38) | 9.4 μg/m3 (40) | 40.0 | |
| Sept. 27, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 11.0 μg/m3 (11) | 3.7 μg/m3 (16) | 17.0 | |
| Sept. 27, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 9.0 μg/m3 (9) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 27, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 20.0 μg/m3 (19) | 6.5 μg/m3 (28) | 28.0 | |
| Sept. 27, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 20.0 μg/m3 (19) | 2.9 μg/m3 (13) | 20.0 | |
| Sept. 27, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 10.0 μg/m3 (10) | 2.3 μg/m3 (10) | 24.0 | |
| Sept. 27, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 15.0 μg/m3 (14) | 5.3 μg/m3 (23) | 23.0 | |
| Sept. 27, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 16.0 μg/m3 (15) | 4.6 μg/m3 (20) | 21.0 | |
| Sept. 27, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 17.0 μg/m3 (16) | 4.8 μg/m3 (20) | 24.0 | |
| Sept. 27, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 18.0 μg/m3 (17) | 12.4 μg/m3 (52) | 52.0 | |
| Sept. 27, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 20.0 μg/m3 (19) | 11.8 μg/m3 (50) | 50.0 | |
| Sept. 27, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 15.0 μg/m3 (14) | 9.1 μg/m3 (38) | 38.0 | |
| Sept. 26, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 16.0 μg/m3 (15) | 14.2 μg/m3 (56) | 56.0 | |
| Sept. 26, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 18.0 μg/m3 (17) | 7.0 μg/m3 (30) | 40.0 | |
| Sept. 26, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 60.0 μg/m3 (54) | 15.0 μg/m3 (58) | 58.0 | |
| Sept. 26, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 58.0 μg/m3 (53) | 14.2 μg/m3 (56) | 56.0 | |
| Sept. 26, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 55.0 μg/m3 (51) | 16.9 μg/m3 (62) | 62.0 | |
| Sept. 26, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 25.0 μg/m3 (24) | 7.4 μg/m3 (31) | 38.0 | |
| Sept. 26, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 29.0 μg/m3 (27) | 6.4 μg/m3 (27) | 33.0 | |
| Sept. 26, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 24.0 μg/m3 (23) | 8.6 μg/m3 (36) | 36.0 | |
| Sept. 26, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 18.0 μg/m3 (17) | 3.8 μg/m3 (16) | 26.0 | |
| Sept. 26, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 29.0 μg/m3 (27) | 5.9 μg/m3 (25) | 27.0 | |
| Sept. 26, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 29.0 μg/m3 (27) | 7.8 μg/m3 (33) | 33.0 | |
| Sept. 26, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 17.0 μg/m3 (16) | 4.1 μg/m3 (18) | 20.0 | |
| Sept. 26, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 9.0 μg/m3 (9) | 4.7 μg/m3 (20) | 20.0 | |
| Sept. 26, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 8.0 μg/m3 (8) | 6.4 μg/m3 (27) | 27.0 | |
| Sept. 26, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 12.0 μg/m3 (12) | 5.5 μg/m3 (23) | 23.0 | |
| Sept. 26, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 27.0 μg/m3 (25) | 7.2 μg/m3 (31) | 31.0 | |
| Sept. 26, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 36.0 μg/m3 (34) | 12.0 μg/m3 (50) | 50.0 | |
| Sept. 26, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 14.0 μg/m3 (13) | 6.3 μg/m3 (27) | 27.0 | |
| Sept. 26, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 30.0 μg/m3 (28) | 6.8 μg/m3 (29) | 29.0 | |
| Sept. 26, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 101.0 μg/m3 (74) | 23.2 μg/m3 (75) | 75.0 | |
| Sept. 26, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 226.0 μg/m3 (137) | 47.0 μg/m3 (130) | 137.0 | |
| Sept. 26, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 253.0 μg/m3 (150) | 52.4 μg/m3 (143) | 150.0 | |
| Sept. 26, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 121.0 μg/m3 (84) | 31.9 μg/m3 (93) | 93.0 | |
| Sept. 26, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 39.0 μg/m3 (37) | 9.8 μg/m3 (41) | 41.0 | |
| Sept. 25, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 26.0 μg/m3 (25) | 4.9 μg/m3 (21) | 37.0 | |
| Sept. 25, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 11.0 μg/m3 (11) | 0.5 μg/m3 (3) | 37.0 | |
| Sept. 25, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 29.0 μg/m3 (27) | 9.2 μg/m3 (39) | 39.0 | |
| Sept. 25, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 25.0 μg/m3 (24) | 6.9 μg/m3 (29) | 38.0 | |
| Sept. 25, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 15.0 μg/m3 (14) | 0.9 μg/m3 (4) | 38.0 | |
| Sept. 25, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 10.0 μg/m3 (10) | -0.1 μg/m3 (0) | 33.0 | |
| Sept. 25, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 33.0 μg/m3 (31) | 7.2 μg/m3 (31) | 31.0 | |
| Sept. 25, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 26.0 μg/m3 (25) | 7.9 μg/m3 (33) | 33.0 | |
| Sept. 25, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 19.0 μg/m3 (18) | 4.8 μg/m3 (20) | 20.0 | |
| Sept. 25, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 6.0 μg/m3 (6) | 3.2 μg/m3 (14) | 21.0 | |
| Sept. 25, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 9.0 μg/m3 (9) | -0.5 μg/m3 (0) | 19.0 | |
| Sept. 25, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 10.0 μg/m3 (10) | 4.1 μg/m3 (18) | 18.0 | |
| Sept. 25, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 5.0 μg/m3 (5) | 5.2 μg/m3 (22) | 22.0 | |
| Sept. 25, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 13.0 μg/m3 (13) | 4.6 μg/m3 (20) | 20.0 | |
| Sept. 25, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 9.0 μg/m3 (9) | 2.9 μg/m3 (13) | 17.0 | |
| Sept. 25, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 3.0 μg/m3 (3) | 3.4 μg/m3 (15) | 18.0 | |
| Sept. 25, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 0.0 μg/m3 (0) | 7.7 μg/m3 (33) | 33.0 | |
| Sept. 25, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 10.0 μg/m3 (10) | 2.8 μg/m3 (12) | 20.0 | |
| Sept. 25, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 45.0 μg/m3 (42) | 8.9 μg/m3 (38) | 42.0 | |
| Sept. 25, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 182.0 μg/m3 (115) | 31.6 μg/m3 (93) | 115.0 | |
| Sept. 25, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 52.6 μg/m3 (144) | 144.0 | |
| Sept. 25, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 107.0 μg/m3 (77) | 23.2 μg/m3 (75) | 77.0 | |
| Sept. 25, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 27.0 μg/m3 (25) | 9.0 μg/m3 (38) | 38.0 | |
| Sept. 25, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | -1.0 μg/m3 (0) | 7.0 μg/m3 (30) | 37.0 | |
| Sept. 24, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | -1.5 μg/m3 (0) | 38.0 | |
| Sept. 24, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 6.0 μg/m3 (6) | 2.8 μg/m3 (12) | 38.0 | |
| Sept. 24, 2021, 9 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) | 4.1 μg/m3 (18) | 38.0 | |
| Sept. 24, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 12.0 μg/m3 (12) | 4.9 μg/m3 (21) | 37.0 | |
| Sept. 24, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 48.0 μg/m3 (45) | 9.0 μg/m3 (38) | 45.0 | |
| Sept. 24, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 44.0 μg/m3 (41) | 7.4 μg/m3 (31) | 41.0 | |
| Sept. 24, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 22.0 μg/m3 (21) | 2.1 μg/m3 (9) | 30.0 | |
| Sept. 24, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 19.0 μg/m3 (18) | 4.6 μg/m3 (20) | 26.0 | |
| Sept. 24, 2021, 3 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) | 5.3 μg/m3 (23) | 23.0 | |
| Sept. 24, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 73.0 μg/m3 (60) | 6.7 μg/m3 (28) | 60.0 | |
| Sept. 24, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (8) | N/A | 120.0 μg/m3 (84) | 13.3 μg/m3 (54) | 84.0 | |
| Sept. 24, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | 34.0 μg/m3 (32) | 4.7 μg/m3 (20) | 32.0 | |
| Sept. 24, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | 24.0 μg/m3 (23) | 4.3 μg/m3 (18) | 23.0 | |
| Sept. 24, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 10.0 μg/m3 (10) | 5.5 μg/m3 (23) | 23.0 | |
| Sept. 24, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 11.0 μg/m3 (11) | 4.5 μg/m3 (19) | 19.0 | |
| Sept. 24, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 14.0 μg/m3 (13) | 1.9 μg/m3 (8) | 15.0 | |
| Sept. 24, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 9.0 μg/m3 (9) | -3.3 μg/m3 (0) | 20.0 | |
| Sept. 24, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 12.0 μg/m3 (12) | 3.3 μg/m3 (14) | 21.0 | |
| Sept. 24, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 17.0 μg/m3 (16) | 6.9 μg/m3 (29) | 29.0 | |
| Sept. 24, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 27.0 μg/m3 (25) | 2.4 μg/m3 (10) | 27.0 | |
| Sept. 24, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 31.0 μg/m3 (29) | 9.0 μg/m3 (38) | 38.0 | |
| Sept. 24, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 61.0 μg/m3 (54) | 9.7 μg/m3 (41) | 54.0 | |
| Sept. 24, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 25.0 μg/m3 (24) | 9.1 μg/m3 (38) | 38.0 | |
| Sept. 24, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 17.0 μg/m3 (16) | 6.2 μg/m3 (26) | 32.0 | |
| Sept. 23, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 7.0 μg/m3 (7) | 4.1 μg/m3 (18) | 35.0 | |
| Sept. 23, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 9.0 μg/m3 (9) | 4.6 μg/m3 (20) | 37.0 | |
| Sept. 23, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 10.0 μg/m3 (10) | 0.6 μg/m3 (3) | 38.0 | |
| Sept. 23, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 9.0 μg/m3 (9) | 6.3 μg/m3 (27) | 38.0 | |
| Sept. 23, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 12.0 μg/m3 (12) | 2.0 μg/m3 (9) | 38.0 | |
| Sept. 23, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 11.0 μg/m3 (11) | 1.2 μg/m3 (5) | 38.0 | |
| Sept. 23, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 7.0 μg/m3 (7) | 9.5 μg/m3 (40) | 40.0 | |
| Sept. 23, 2021, 4 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) | 3.7 μg/m3 (16) | 36.0 | |
| Sept. 23, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 10.0 μg/m3 (10) | -4.8 μg/m3 (0) | 24.0 | |
| Sept. 23, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 15.0 μg/m3 (14) | -0.3 μg/m3 (0) | 17.0 | |
| Sept. 23, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | 53.0 μg/m3 (50) | 3.3 μg/m3 (14) | 50.0 | |
| Sept. 23, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | 45.0 μg/m3 (42) | 6.5 μg/m3 (28) | 42.0 | |
| Sept. 23, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 10.0 μg/m3 (10) | 0.8 μg/m3 (4) | 11.0 | |
| Sept. 23, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 2.0 μg/m3 (2) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 23, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 8.0 μg/m3 (8) | 2.5 μg/m3 (11) | 16.0 | |
| Sept. 23, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 13.0 μg/m3 (13) | 9.2 μg/m3 (39) | 39.0 | |
| Sept. 23, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 16.0 μg/m3 (15) | 14.6 μg/m3 (57) | 57.0 | |
| Sept. 23, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 7.0 μg/m3 (7) | -1.5 μg/m3 (0) | 15.0 | |
| Sept. 23, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 13.0 μg/m3 (13) | 2.4 μg/m3 (10) | 16.0 | |
| Sept. 23, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 27.0 μg/m3 (25) | 2.4 μg/m3 (10) | 25.0 | |
| Sept. 23, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 43.0 μg/m3 (40) | 11.0 μg/m3 (46) | 46.0 | |
| Sept. 23, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 43.0 μg/m3 (40) | 6.8 μg/m3 (29) | 40.0 | |
| Sept. 23, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 18.0 μg/m3 (17) | 4.6 μg/m3 (20) | 26.0 | |
| Sept. 23, 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) | 4.1 μg/m3 (18) | 30.0 | |
| Sept. 22, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 21.0 μg/m3 (20) | 3.4 μg/m3 (15) | 38.0 | |
| Sept. 22, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 17.0 μg/m3 (16) | 5.2 μg/m3 (22) | 38.0 | |
| Sept. 22, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 37.0 μg/m3 (35) | 4.4 μg/m3 (19) | 38.0 | |
| Sept. 22, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 30.0 μg/m3 (28) | 8.2 μg/m3 (35) | 38.0 | |
| Sept. 22, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 32.0 μg/m3 (30) | 4.7 μg/m3 (20) | 37.0 | |
| Sept. 22, 2021, 6 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) | -1.4 μg/m3 (0) | 33.0 | |
| Sept. 22, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 3.0 μg/m3 (3) | 0.5 μg/m3 (3) | 28.0 | |
| Sept. 22, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 1.0 μg/m3 (1) | -3.3 μg/m3 (0) | 28.0 | |
| Sept. 22, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 12.0 μg/m3 (12) | -3.7 μg/m3 (0) | 22.0 | |
| Sept. 22, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 22.0 μg/m3 (21) | 1.0 μg/m3 (5) | 21.0 | |
| Sept. 22, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 6.0 μg/m3 (6) | -0.1 μg/m3 (0) | 17.0 | |
| Sept. 22, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 4.0 μg/m3 (4) | 2.6 μg/m3 (11) | 17.0 | |
| Sept. 22, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 0.0 μg/m3 (0) | 2.3 μg/m3 (10) | 18.0 | |
| Sept. 22, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 5.0 μg/m3 (5) | 1.4 μg/m3 (6) | 18.0 | |
| Sept. 22, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 4.0 μg/m3 (4) | 3.2 μg/m3 (14) | 18.0 | |
| Sept. 22, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 2.0 μg/m3 (2) | -2.3 μg/m3 (0) | 19.0 | |
| Sept. 22, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | -3.0 μg/m3 (0) | 1.0 μg/m3 (5) | 20.0 | |
| Sept. 22, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 1.0 μg/m3 (1) | 2.2 μg/m3 (10) | 22.0 | |
| Sept. 22, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 7.0 μg/m3 (7) | 0.7 μg/m3 (3) | 22.0 | |
| Sept. 22, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 14.0 μg/m3 (13) | -0.9 μg/m3 (0) | 20.0 | |
| Sept. 22, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 36.0 μg/m3 (34) | 10.9 μg/m3 (46) | 46.0 | |
| Sept. 22, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 44.0 μg/m3 (41) | 5.3 μg/m3 (23) | 41.0 | |
| Sept. 22, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 42.0 μg/m3 (39) | 11.5 μg/m3 (48) | 48.0 | |
| Sept. 22, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 33.0 μg/m3 (31) | 7.8 μg/m3 (33) | 37.0 | |
| Sept. 21, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 41.0 μg/m3 (38) | 6.5 μg/m3 (28) | 40.0 | |
| Sept. 21, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 14.0 μg/m3 (13) | 1.4 μg/m3 (6) | 40.0 | |
| Sept. 21, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 4.0 μg/m3 (4) | -0.6 μg/m3 (0) | 39.0 | |
| Sept. 21, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 3.0 μg/m3 (3) | 2.0 μg/m3 (9) | 38.0 |