Chicago (Ashburn) IL, US: 41.7547, -87.7136
Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Feb. 24, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.9 μg/m^{3} (42) | 42.0 | |
Feb. 24, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.4 μg/m^{3} (44) | 44.0 | |
Feb. 24, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.9 μg/m^{3} (50) | 50.0 | |
Feb. 24, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m^{3} (50) | 50.0 | |
Feb. 24, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.2 μg/m^{3} (52) | 52.0 | |
Feb. 24, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.5 μg/m^{3} (54) | 54.0 | |
Feb. 24, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.4 μg/m^{3} (40) | 40.0 | |
Feb. 24, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.6 μg/m^{3} (32) | 32.0 | |
Feb. 24, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.8 μg/m^{3} (33) | 33.0 | |
Feb. 24, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.7 μg/m^{3} (37) | 37.0 | |
Feb. 24, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.7 μg/m^{3} (41) | 41.0 | |
Feb. 24, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.9 μg/m^{3} (17) | 17.0 | |
Feb. 24, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.1 μg/m^{3} (22) | 22.0 | |
Feb. 24, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.6 μg/m^{3} (24) | 24.0 | |
Feb. 24, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.5 μg/m^{3} (36) | 36.0 | |
Feb. 24, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.1 μg/m^{3} (13) | 13.0 | |
Feb. 24, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.6 μg/m^{3} (24) | 24.0 | |
Feb. 24, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m^{3} (34) | 34.0 | |
Feb. 24, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.4 μg/m^{3} (52) | 52.0 | |
Feb. 24, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.2 μg/m^{3} (47) | 47.0 | |
Feb. 24, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.9 μg/m^{3} (29) | 29.0 | |
Feb. 24, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.7 μg/m^{3} (37) | 37.0 | |
Feb. 23, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m^{3} (38) | 38.0 | |
Feb. 23, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.7 μg/m^{3} (28) | 28.0 | |
Feb. 23, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.2 μg/m^{3} (18) | 18.0 | |
Feb. 23, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.6 μg/m^{3} (20) | 20.0 | |
Feb. 23, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.6 μg/m^{3} (16) | 16.0 | |
Feb. 23, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.9 μg/m^{3} (21) | 21.0 | |
Feb. 23, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.9 μg/m^{3} (25) | 25.0 | |
Feb. 23, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.7 μg/m^{3} (20) | 20.0 | |
Feb. 23, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.4 μg/m^{3} (27) | 27.0 | |
Feb. 23, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.3 μg/m^{3} (35) | 35.0 | |
Feb. 23, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.5 μg/m^{3} (40) | 40.0 | |
Feb. 23, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.3 μg/m^{3} (35) | 35.0 | |
Feb. 23, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.8 μg/m^{3} (37) | 37.0 | |
Feb. 23, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.3 μg/m^{3} (27) | 27.0 | |
Feb. 23, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.6 μg/m^{3} (16) | 16.0 | |
Feb. 23, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.9 μg/m^{3} (17) | 17.0 | |
Feb. 23, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.1 μg/m^{3} (30) | 30.0 | |
Feb. 23, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.2 μg/m^{3} (39) | 39.0 | |
Feb. 23, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.4 μg/m^{3} (23) | 23.0 | |
Feb. 23, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.5 μg/m^{3} (32) | 32.0 | |
Feb. 23, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.1 μg/m^{3} (43) | 43.0 | |
Feb. 23, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.6 μg/m^{3} (53) | 53.0 | |
Feb. 23, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.9 μg/m^{3} (53) | 53.0 | |
Feb. 23, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.3 μg/m^{3} (48) | 48.0 | |
Feb. 22, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.2 μg/m^{3} (52) | 52.0 | |
Feb. 22, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.8 μg/m^{3} (53) | 53.0 | |
Feb. 22, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m^{3} (55) | 55.0 | |
Feb. 22, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m^{3} (55) | 55.0 | |
Feb. 22, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.4 μg/m^{3} (69) | 69.0 | |
Feb. 22, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.6 μg/m^{3} (67) | 67.0 | |
Feb. 22, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.9 μg/m^{3} (64) | 64.0 | |
Feb. 22, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m^{3} (66) | 66.0 | |
Feb. 22, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.8 μg/m^{3} (61) | 61.0 | |
Feb. 22, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.6 μg/m^{3} (65) | 65.0 | |
Feb. 22, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.9 μg/m^{3} (72) | 72.0 | |
Feb. 22, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.2 μg/m^{3} (71) | 71.0 | |
Feb. 22, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.6 μg/m^{3} (63) | 63.0 | |
Feb. 22, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.7 μg/m^{3} (59) | 59.0 | |
Feb. 22, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.9 μg/m^{3} (53) | 53.0 | |
Feb. 22, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.8 μg/m^{3} (41) | 41.0 | |
Feb. 22, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.6 μg/m^{3} (32) | 32.0 | |
Feb. 22, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m^{3} (34) | 34.0 | |
Feb. 22, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.1 μg/m^{3} (26) | 26.0 | |
Feb. 22, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.8 μg/m^{3} (25) | 25.0 | |
Feb. 22, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.9 μg/m^{3} (38) | 38.0 | |
Feb. 22, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.8 μg/m^{3} (41) | 41.0 | |
Feb. 22, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.9 μg/m^{3} (55) | 55.0 | |
Feb. 22, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.5 μg/m^{3} (32) | 32.0 | |
Feb. 21, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.4 μg/m^{3} (61) | 61.0 | |
Feb. 21, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.4 μg/m^{3} (48) | 48.0 | |
Feb. 21, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.1 μg/m^{3} (58) | 58.0 | |
Feb. 21, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.1 μg/m^{3} (43) | 43.0 | |
Feb. 21, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.7 μg/m^{3} (49) | 49.0 | |
Feb. 21, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.1 μg/m^{3} (47) | 47.0 | |
Feb. 21, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.1 μg/m^{3} (51) | 51.0 | |
Feb. 21, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.6 μg/m^{3} (45) | 45.0 | |
Feb. 21, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.4 μg/m^{3} (36) | 36.0 | |
Feb. 21, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.2 μg/m^{3} (56) | 56.0 | |
Feb. 21, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m^{3} (64) | 64.0 | |
Feb. 21, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.1 μg/m^{3} (73) | 73.0 | |
Feb. 21, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.7 μg/m^{3} (78) | 78.0 | |
Feb. 21, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m^{3} (77) | 77.0 | |
Feb. 21, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.2 μg/m^{3} (79) | 79.0 | |
Feb. 21, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.8 μg/m^{3} (80) | 80.0 | |
Feb. 21, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.8 μg/m^{3} (80) | 80.0 | |
Feb. 21, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.7 μg/m^{3} (82) | 82.0 | |
Feb. 21, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m^{3} (74) | 74.0 | |
Feb. 21, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.7 μg/m^{3} (80) | 80.0 | |
Feb. 21, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.3 μg/m^{3} (73) | 73.0 | |
Feb. 21, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.1 μg/m^{3} (75) | 75.0 | |
Feb. 21, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.2 μg/m^{3} (75) | 75.0 | |
Feb. 21, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m^{3} (70) | 70.0 | |
Feb. 20, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.9 μg/m^{3} (70) | 70.0 | |
Feb. 20, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.7 μg/m^{3} (65) | 65.0 | |
Feb. 20, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m^{3} (55) | 55.0 | |
Feb. 20, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m^{3} (70) | 70.0 | |
Feb. 20, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.2 μg/m^{3} (62) | 62.0 | |
Feb. 20, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m^{3} (60) | 60.0 | |
Feb. 20, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m^{3} (64) | 64.0 | |
Feb. 20, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.6 μg/m^{3} (80) | 80.0 | |
Feb. 20, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.3 μg/m^{3} (98) | 98.0 | |
Feb. 20, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.6 μg/m^{3} (102) | 102.0 | |
Feb. 20, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.6 μg/m^{3} (97) | 97.0 | |
Feb. 20, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m^{3} (98) | 98.0 | |
Feb. 20, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.8 μg/m^{3} (95) | 95.0 | |
Feb. 20, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.6 μg/m^{3} (95) | 95.0 | |
Feb. 20, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 μg/m^{3} (95) | 95.0 | |
Feb. 20, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.3 μg/m^{3} (81) | 81.0 | |
Feb. 20, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.6 μg/m^{3} (86) | 86.0 | |
Feb. 20, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.2 μg/m^{3} (79) | 79.0 | |
Feb. 20, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.5 μg/m^{3} (86) | 86.0 | |
Feb. 20, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.3 μg/m^{3} (90) | 90.0 | |
Feb. 20, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.2 μg/m^{3} (77) | 77.0 | |
Feb. 20, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.4 μg/m^{3} (84) | 84.0 | |
Feb. 20, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m^{3} (70) | 70.0 | |
Feb. 20, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.3 μg/m^{3} (75) | 75.0 | |
Feb. 19, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.7 μg/m^{3} (65) | 65.0 | |
Feb. 19, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.1 μg/m^{3} (68) | 68.0 | |
Feb. 19, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.4 μg/m^{3} (67) | 67.0 | |
Feb. 19, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m^{3} (72) | 72.0 | |
Feb. 19, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.6 μg/m^{3} (63) | 63.0 | |
Feb. 19, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.8 μg/m^{3} (74) | 74.0 | |
Feb. 19, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.1 μg/m^{3} (75) | 75.0 | |
Feb. 19, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.3 μg/m^{3} (79) | 79.0 | |
Feb. 19, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.3 μg/m^{3} (90) | 90.0 | |
Feb. 19, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.9 μg/m^{3} (89) | 89.0 | |
Feb. 19, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.9 μg/m^{3} (74) | 74.0 | |
Feb. 19, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.7 μg/m^{3} (67) | 67.0 | |
Feb. 19, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m^{3} (64) | 64.0 | |
Feb. 19, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.3 μg/m^{3} (60) | 60.0 | |
Feb. 19, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.7 μg/m^{3} (70) | 70.0 | |
Feb. 19, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.8 μg/m^{3} (70) | 70.0 | |
Feb. 19, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.5 μg/m^{3} (75) | 75.0 | |
Feb. 19, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.2 μg/m^{3} (75) | 75.0 | |
Feb. 19, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.2 μg/m^{3} (71) | 71.0 | |
Feb. 19, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m^{3} (60) | 60.0 | |
Feb. 19, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.5 μg/m^{3} (61) | 61.0 | |
Feb. 19, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.9 μg/m^{3} (42) | 42.0 | |
Feb. 19, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.1 μg/m^{3} (56) | 56.0 | |
Feb. 19, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.5 μg/m^{3} (28) | 28.0 | |
Feb. 18, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.9 μg/m^{3} (42) | 42.0 | |
Feb. 18, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.5 μg/m^{3} (57) | 57.0 | |
Feb. 18, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.4 μg/m^{3} (58) | 58.0 | |
Feb. 18, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.3 μg/m^{3} (48) | 48.0 | |
Feb. 18, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.5 μg/m^{3} (36) | 36.0 | |
Feb. 18, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.8 μg/m^{3} (41) | 41.0 | |
Feb. 18, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m^{3} (50) | 50.0 | |
Feb. 18, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.1 μg/m^{3} (56) | 56.0 | |
Feb. 18, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.6 μg/m^{3} (55) | 55.0 | |
Feb. 18, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m^{3} (60) | 60.0 | |
Feb. 18, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.9 μg/m^{3} (57) | 57.0 | |
Feb. 18, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.3 μg/m^{3} (54) | 54.0 | |
Feb. 18, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.9 μg/m^{3} (55) | 55.0 | |
Feb. 18, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.4 μg/m^{3} (52) | 52.0 | |
Feb. 18, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.1 μg/m^{3} (68) | 68.0 | |
Feb. 18, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m^{3} (64) | 64.0 | |
Feb. 18, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.4 μg/m^{3} (67) | 67.0 | |
Feb. 18, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.4 μg/m^{3} (69) | 69.0 | |
Feb. 18, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.6 μg/m^{3} (61) | 61.0 | |
Feb. 18, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.8 μg/m^{3} (37) | 37.0 | |
Feb. 18, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.8 μg/m^{3} (46) | 46.0 | |
Feb. 18, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.1 μg/m^{3} (54) | 54.0 | |
Feb. 18, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.8 μg/m^{3} (57) | 57.0 | |
Feb. 18, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.9 μg/m^{3} (59) | 59.0 | |
Feb. 17, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.3 μg/m^{3} (56) | 56.0 | |
Feb. 17, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.8 μg/m^{3} (70) | 70.0 |