Phoenix (Estrella) AZ, US: 33.4265, -112.1181
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 21, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 97.9 μg/m3 (73) | 10.9 μg/m3 (46) | 73.0 | |
| April 21, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 99.1 μg/m3 (73) | 6.2 μg/m3 (26) | 73.0 | |
| April 21, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 130.8 μg/m3 (89) | 6.9 μg/m3 (29) | 89.0 | |
| April 21, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 47.2 μg/m3 (44) | 7.6 μg/m3 (32) | 44.0 | |
| April 21, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.1 μg/m3 (27) | 5.0 μg/m3 (21) | 27.0 | |
| April 21, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.3 μg/m3 (26) | 5.1 μg/m3 (22) | 26.0 | |
| April 21, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.6 μg/m3 (25) | 5.5 μg/m3 (23) | 25.0 | |
| April 21, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 24.8 μg/m3 (23) | 7.3 μg/m3 (31) | 31.0 | |
| April 21, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.4 μg/m3 (25) | 8.4 μg/m3 (36) | 36.0 | |
| April 21, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.8 μg/m3 (28) | 8.4 μg/m3 (36) | 36.0 | |
| April 21, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.6 μg/m3 (19) | 7.6 μg/m3 (32) | 32.0 | |
| April 21, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.2 μg/m3 (22) | 5.6 μg/m3 (24) | 24.0 | |
| April 21, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 30.3 μg/m3 (29) | 6.1 μg/m3 (26) | 29.0 | |
| April 21, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 65.2 μg/m3 (57) | 8.1 μg/m3 (34) | 57.0 | |
| April 21, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 41.2 μg/m3 (39) | 6.7 μg/m3 (28) | 39.0 | |
| April 21, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.0 μg/m3 (25) | 7.9 μg/m3 (33) | 33.0 | |
| April 21, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (17) | 5.3 μg/m3 (23) | 23.0 | |
| April 21, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.8 μg/m3 (15) | 3.6 μg/m3 (16) | 16.0 | |
| April 20, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 4.5 μg/m3 (19) | 19.0 | |
| April 20, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.8 μg/m3 (22) | 4.4 μg/m3 (19) | 22.0 | |
| April 20, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.3 μg/m3 (17) | 2.7 μg/m3 (12) | 17.0 | |
| April 20, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 0.0 | |
| April 20, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 0.0 | |
| April 20, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 0.0 | |
| April 20, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 38.2 μg/m3 (36) | 7.9 μg/m3 (33) | 36.0 | |
| April 20, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 59.2 μg/m3 (54) | 6.2 μg/m3 (26) | 54.0 | |
| April 20, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 58.8 μg/m3 (53) | 9.0 μg/m3 (38) | 53.0 | |
| April 20, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 60.6 μg/m3 (54) | 16.0 μg/m3 (60) | 60.0 | |
| April 20, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 47.0 μg/m3 (44) | 12.6 μg/m3 (53) | 53.0 | |
| April 20, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.6 μg/m3 (27) | 7.1 μg/m3 (30) | 30.0 | |
| April 20, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 28.7 μg/m3 (27) | 8.3 μg/m3 (35) | 35.0 | |
| April 20, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 29.9 μg/m3 (28) | 10.4 μg/m3 (44) | 44.0 | |
| April 20, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 36.6 μg/m3 (34) | 12.6 μg/m3 (53) | 53.0 | |
| April 20, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.3 μg/m3 (31) | 11.8 μg/m3 (50) | 50.0 | |
| April 20, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 34.0 μg/m3 (32) | 11.4 μg/m3 (48) | 48.0 | |
| April 20, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.5 μg/m3 (28) | 6.4 μg/m3 (27) | 28.0 | |
| April 20, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 36.0 μg/m3 (34) | 5.9 μg/m3 (25) | 34.0 | |
| April 20, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 42.3 μg/m3 (40) | 4.7 μg/m3 (20) | 40.0 | |
| April 20, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.8 μg/m3 (27) | 3.8 μg/m3 (16) | 27.0 | |
| April 20, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.2 μg/m3 (15) | 1.7 μg/m3 (8) | 15.0 | |
| April 20, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 3.4 μg/m3 (15) | 15.0 | |
| April 20, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.2 μg/m3 (10) | 1.4 μg/m3 (6) | 10.0 | |
| April 19, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.3 μg/m3 (13) | 5.2 μg/m3 (22) | 22.0 | |
| April 19, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.6 μg/m3 (13) | 4.9 μg/m3 (21) | 21.0 | |
| April 19, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.8 μg/m3 (13) | 4.3 μg/m3 (18) | 18.0 | |
| April 19, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.7 μg/m3 (13) | 5.1 μg/m3 (22) | 22.0 | |
| April 19, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.1 μg/m3 (14) | 6.4 μg/m3 (27) | 27.0 | |
| April 19, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.4 μg/m3 (14) | 3.6 μg/m3 (16) | 16.0 | |
| April 19, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.2 μg/m3 (18) | 4.9 μg/m3 (21) | 21.0 | |
| April 19, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 43.7 μg/m3 (41) | 6.2 μg/m3 (26) | 41.0 | |
| April 19, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 88.4 μg/m3 (68) | 18.6 μg/m3 (65) | 68.0 | |
| April 19, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 155.9 μg/m3 (102) | 25.6 μg/m3 (80) | 102.0 | |
| April 19, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 190.8 μg/m3 (119) | 22.7 μg/m3 (74) | 119.0 | |
| April 19, 2021, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 75.2 μg/m3 (61) | 11.2 μg/m3 (47) | 61.0 | |
| April 19, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.9 μg/m3 (22) | 7.1 μg/m3 (30) | 30.0 | |
| April 19, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.8 μg/m3 (10) | 4.8 μg/m3 (20) | 20.0 | |
| April 19, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 9.5 μg/m3 (9) | 2.4 μg/m3 (10) | 10.0 | |
| April 19, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 8.2 μg/m3 (8) | 2.1 μg/m3 (9) | 9.0 | |
| April 19, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 9.2 μg/m3 (9) | 1.9 μg/m3 (8) | 9.0 | |
| April 19, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 8.2 μg/m3 (8) | 2.3 μg/m3 (10) | 10.0 | |
| April 19, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 9.6 μg/m3 (9) | 3.8 μg/m3 (16) | 16.0 | |
| April 19, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 7.8 μg/m3 (8) | 3.7 μg/m3 (16) | 16.0 | |
| April 19, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 5.2 μg/m3 (5) | 2.3 μg/m3 (10) | 10.0 | |
| April 19, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 8.9 μg/m3 (9) | 2.7 μg/m3 (12) | 12.0 | |
| April 19, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.3 μg/m3 (12) | 2.0 μg/m3 (9) | 12.0 | |
| April 19, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.3 μg/m3 (21) | 1.4 μg/m3 (6) | 21.0 | |
| April 18, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.3 μg/m3 (15) | 1.4 μg/m3 (6) | 15.0 | |
| April 18, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 128.0 μg/m3 (88) | 10.2 μg/m3 (43) | 88.0 | |
| April 18, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.7 μg/m3 (30) | 1.1 μg/m3 (5) | 30.0 | |
| April 18, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.1 μg/m3 (16) | 1.7 μg/m3 (8) | 16.0 | |
| April 18, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.2 μg/m3 (15) | 3.0 μg/m3 (13) | 15.0 | |
| April 18, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.3 μg/m3 (14) | 0.8 μg/m3 (4) | 14.0 | |
| April 18, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.3 μg/m3 (13) | -1.6 μg/m3 (0) | 13.0 | |
| April 18, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.8 μg/m3 (14) | 3.9 μg/m3 (17) | 17.0 | |
| April 18, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.8 μg/m3 (23) | 6.2 μg/m3 (26) | 26.0 | |
| April 18, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.2 μg/m3 (19) | 5.8 μg/m3 (25) | 25.0 | |
| April 18, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.4 μg/m3 (12) | 4.2 μg/m3 (18) | 18.0 | |
| April 18, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.1 μg/m3 (12) | 4.2 μg/m3 (18) | 18.0 | |
| April 18, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.1 μg/m3 (13) | 5.3 μg/m3 (23) | 23.0 | |
| April 18, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.9 μg/m3 (19) | 8.4 μg/m3 (36) | 36.0 | |
| April 18, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.2 μg/m3 (21) | 8.2 μg/m3 (35) | 35.0 | |
| April 18, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.1 μg/m3 (13) | 5.1 μg/m3 (22) | 22.0 | |
| April 18, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.6 μg/m3 (10) | 4.0 μg/m3 (17) | 17.0 | |
| April 18, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.3 μg/m3 (16) | 4.6 μg/m3 (20) | 20.0 | |
| April 18, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.8 μg/m3 (19) | 5.7 μg/m3 (24) | 24.0 | |
| April 18, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.3 μg/m3 (17) | 3.4 μg/m3 (15) | 17.0 | |
| April 18, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.8 μg/m3 (23) | 4.5 μg/m3 (19) | 23.0 | |
| April 18, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.8 μg/m3 (21) | 2.9 μg/m3 (13) | 21.0 | |
| April 18, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 2.3 μg/m3 (10) | 15.0 | |
| April 18, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.5 μg/m3 (18) | 7.2 μg/m3 (31) | 31.0 | |
| April 17, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.3 μg/m3 (16) | 4.8 μg/m3 (20) | 20.0 | |
| April 17, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.1 μg/m3 (15) | 4.2 μg/m3 (18) | 18.0 | |
| April 17, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.3 μg/m3 (17) | 5.6 μg/m3 (24) | 24.0 | |
| April 17, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.7 μg/m3 (11) | 3.5 μg/m3 (15) | 15.0 | |
| April 17, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.2 μg/m3 (11) | 3.2 μg/m3 (14) | 14.0 | |
| April 17, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.1 μg/m3 (13) | 4.0 μg/m3 (17) | 17.0 | |
| April 17, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.8 μg/m3 (17) | 4.9 μg/m3 (21) | 21.0 | |
| April 17, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 32.8 μg/m3 (31) | 7.2 μg/m3 (31) | 31.0 | |
| April 17, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 71.2 μg/m3 (60) | 16.7 μg/m3 (61) | 61.0 | |
| April 17, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 116.4 μg/m3 (82) | 23.5 μg/m3 (75) | 82.0 | |
| April 17, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 68.0 μg/m3 (58) | 17.2 μg/m3 (62) | 62.0 | |
| April 17, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 46.4 μg/m3 (43) | 15.4 μg/m3 (58) | 58.0 | |
| April 17, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 43.1 μg/m3 (40) | 13.7 μg/m3 (55) | 55.0 | |
| April 17, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 46.5 μg/m3 (44) | 15.6 μg/m3 (59) | 59.0 | |
| April 17, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 86.0 μg/m3 (67) | 25.8 μg/m3 (80) | 80.0 | |
| April 17, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 64.5 μg/m3 (56) | 20.5 μg/m3 (69) | 69.0 | |
| April 17, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 40.3 μg/m3 (38) | 12.5 μg/m3 (52) | 52.0 | |
| April 17, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 43.3 μg/m3 (41) | 10.7 μg/m3 (45) | 45.0 | |
| April 17, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 48.2 μg/m3 (45) | 9.9 μg/m3 (42) | 45.0 | |
| April 17, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 36.1 μg/m3 (34) | 7.8 μg/m3 (33) | 34.0 | |
| April 17, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.7 μg/m3 (28) | 7.3 μg/m3 (31) | 31.0 | |
| April 17, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.6 μg/m3 (21) | 5.0 μg/m3 (21) | 21.0 | |
| April 17, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.1 μg/m3 (11) | 2.8 μg/m3 (12) | 12.0 | |
| April 17, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 8.2 μg/m3 (8) | 1.8 μg/m3 (8) | 8.0 | |
| April 16, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.3 μg/m3 (13) | 5.4 μg/m3 (23) | 23.0 | |
| April 16, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.9 μg/m3 (19) | 9.9 μg/m3 (42) | 42.0 | |
| April 16, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.6 μg/m3 (17) | 6.1 μg/m3 (26) | 26.0 | |
| April 16, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.3 μg/m3 (13) | 2.3 μg/m3 (10) | 13.0 | |
| April 16, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.5 μg/m3 (21) | 5.4 μg/m3 (23) | 23.0 | |
| April 16, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 24.9 μg/m3 (24) | 5.6 μg/m3 (24) | 24.0 | |
| April 16, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.3 μg/m3 (31) | 3.3 μg/m3 (14) | 31.0 | |
| April 16, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 40.1 μg/m3 (38) | 5.4 μg/m3 (23) | 38.0 | |
| April 16, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 97.3 μg/m3 (72) | 14.2 μg/m3 (56) | 72.0 | |
| April 16, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 223.0 μg/m3 (135) | 27.8 μg/m3 (85) | 135.0 | |
| April 16, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | 173.4 μg/m3 (111) | 22.7 μg/m3 (74) | 111.0 | |
| April 16, 2021, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | N/A | N/A | 101.1 μg/m3 (74) | 21.1 μg/m3 (70) | 74.0 | |
| April 16, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.3 μg/m3 (31) | 10.2 μg/m3 (43) | 43.0 | |
| April 16, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.9 μg/m3 (21) | 4.2 μg/m3 (18) | 21.0 | |
| April 16, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.3 μg/m3 (28) | 7.6 μg/m3 (32) | 32.0 | |
| April 16, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 52.6 μg/m3 (49) | 14.8 μg/m3 (57) | 57.0 | |
| April 16, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 69.1 μg/m3 (58) | 14.9 μg/m3 (57) | 58.0 | |
| April 16, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 40.1 μg/m3 (38) | 9.4 μg/m3 (40) | 40.0 | |
| April 16, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 46.2 μg/m3 (43) | 8.7 μg/m3 (37) | 43.0 | |
| April 16, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.9 μg/m3 (25) | 2.2 μg/m3 (10) | 25.0 | |
| April 16, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 24.7 μg/m3 (23) | 3.5 μg/m3 (15) | 23.0 | |
| April 16, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.2 μg/m3 (31) | 6.3 μg/m3 (27) | 31.0 | |
| April 16, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.9 μg/m3 (30) | 5.0 μg/m3 (21) | 30.0 | |
| April 16, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.8 μg/m3 (23) | 1.9 μg/m3 (8) | 23.0 | |
| April 15, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.3 μg/m3 (27) | 6.2 μg/m3 (26) | 27.0 | |
| April 15, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.8 μg/m3 (28) | 3.5 μg/m3 (15) | 28.0 | |
| April 15, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 39.9 μg/m3 (37) | 7.0 μg/m3 (30) | 37.0 | |
| April 15, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 40.4 μg/m3 (38) | 6.5 μg/m3 (28) | 38.0 | |
| April 15, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 38.6 μg/m3 (36) | 7.9 μg/m3 (33) | 36.0 | |
| April 15, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.3 μg/m3 (28) | 4.5 μg/m3 (19) | 28.0 | |
| April 15, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.9 μg/m3 (28) | 10.0 μg/m3 (42) | 42.0 | |
| April 15, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.7 μg/m3 (30) | 8.9 μg/m3 (38) | 38.0 | |
| April 15, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.9 μg/m3 (32) | 5.5 μg/m3 (23) | 32.0 | |
| April 15, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 39.4 μg/m3 (37) | 7.9 μg/m3 (33) | 37.0 | |
| April 15, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 42.2 μg/m3 (40) | 7.5 μg/m3 (32) | 40.0 | |
| April 15, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 36.1 μg/m3 (34) | 6.7 μg/m3 (28) | 34.0 | |
| April 15, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.6 μg/m3 (26) | 5.1 μg/m3 (22) | 26.0 | |
| April 15, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.4 μg/m3 (12) | 3.0 μg/m3 (13) | 13.0 | |
| April 15, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.3 μg/m3 (13) | 5.5 μg/m3 (23) | 23.0 | |
| April 15, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.3 μg/m3 (13) | 7.0 μg/m3 (30) | 30.0 | |
| April 15, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.7 μg/m3 (11) | 4.6 μg/m3 (20) | 20.0 | |
| April 15, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.6 μg/m3 (11) | 0.1 μg/m3 (1) | 11.0 | |
| April 15, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.9 μg/m3 (18) | 4.0 μg/m3 (17) | 18.0 | |
| April 15, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 24.3 μg/m3 (23) | 3.6 μg/m3 (16) | 23.0 | |
| April 15, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.2 μg/m3 (25) | 4.1 μg/m3 (18) | 25.0 | |
| April 15, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.7 μg/m3 (21) | 2.1 μg/m3 (9) | 21.0 | |
| April 15, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.8 μg/m3 (27) | 3.9 μg/m3 (17) | 27.0 | |
| April 15, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 30.8 μg/m3 (29) | 0.9 μg/m3 (4) | 29.0 | |
| April 14, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.1 μg/m3 (17) | 4.6 μg/m3 (20) | 20.0 | |
| April 14, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.2 μg/m3 (15) | 4.3 μg/m3 (18) | 18.0 | |
| April 14, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.5 μg/m3 (15) | 4.6 μg/m3 (20) | 20.0 | |
| April 14, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.2 μg/m3 (22) | 4.3 μg/m3 (18) | 22.0 | |
| April 14, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 4.6 μg/m3 (20) | 20.0 | |
| April 14, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.7 μg/m3 (11) | 1.8 μg/m3 (8) | 11.0 |