Hurricane (N 870 W) UT, US: 37.179, -113.3052
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 21, 2021, 6 p.m. | 1.8 ppb (2) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 59.0 ppb (65) | N/A | N/A | 5.3 μg/m3 (23) | 65.0 | |
| April 21, 2021, 5 p.m. | 2.3 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 57.0 ppb (58) | N/A | N/A | N/A | 58.0 | |
| April 21, 2021, 4 p.m. | 3.5 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 21, 2021, 3 p.m. | 3.5 ppb (4) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 7.6 μg/m3 (32) | 47.0 | |
| April 21, 2021, 2 p.m. | 3.4 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| April 21, 2021, 1 p.m. | 2.5 ppb (3) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | N/A | 39.0 | |
| April 21, 2021, noon | 1.6 ppb (2) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 6.4 μg/m3 (27) | 39.0 | |
| April 21, 2021, 11 a.m. | N/A | 0.1 ppb (1) | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 7.1 μg/m3 (30) | 38.0 | |
| April 21, 2021, 10 a.m. | 1.1 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 7.5 μg/m3 (32) | 39.0 | |
| April 21, 2021, 9 a.m. | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 8.4 μg/m3 (36) | 40.0 | |
| April 21, 2021, 8 a.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 8.2 μg/m3 (35) | 38.0 | |
| April 21, 2021, 7 a.m. | 1.8 ppb (2) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 8.6 μg/m3 (36) | 37.0 | |
| April 21, 2021, 6 a.m. | 1.9 ppb (2) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | N/A | 36.0 | |
| April 21, 2021, 5 a.m. | 2.8 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | N/A | 35.0 | |
| April 21, 2021, 4 a.m. | 3.2 ppb (4) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 11.4 μg/m3 (48) | 48.0 | |
| April 21, 2021, 3 a.m. | 12.5 ppb (12) | 0.5 ppb (1) | N/A | 12.0 ppb (12) | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 13.1 μg/m3 (54) | 54.0 | |
| April 21, 2021, 2 a.m. | 15.2 ppb (15) | 0.7 ppb (1) | N/A | 15.0 ppb (15) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 11.8 μg/m3 (50) | 50.0 | |
| April 21, 2021, 1 a.m. | 5.9 ppb (6) | 0.4 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 10.0 μg/m3 (42) | 43.0 | |
| April 21, 2021, midnight | 3.9 ppb (4) | 0.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | N/A | 46.0 | |
| April 20, 2021, 11 p.m. | 1.8 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 8.2 μg/m3 (35) | 48.0 | |
| April 20, 2021, 10 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 20, 2021, 9 p.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 20, 2021, 8 p.m. | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 20, 2021, 7 p.m. | 2.0 ppb (2) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 20, 2021, 6 p.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | N/A | 49.0 | |
| April 20, 2021, 5 p.m. | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (48) | N/A | N/A | N/A | 48.0 | |
| April 20, 2021, 4 p.m. | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 15.4 μg/m3 (58) | 58.0 | |
| April 20, 2021, 3 p.m. | 1.7 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 15.4 μg/m3 (58) | 58.0 | |
| April 20, 2021, 2 p.m. | 3.9 ppb (4) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| April 20, 2021, 1 p.m. | 2.9 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| April 20, 2021, noon | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 13.7 μg/m3 (55) | 55.0 | |
| April 20, 2021, 11 a.m. | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 15.8 μg/m3 (59) | 59.0 | |
| April 20, 2021, 10 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 20.2 μg/m3 (69) | 69.0 | |
| April 20, 2021, 9 a.m. | 0.7 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 24.9 μg/m3 (78) | 78.0 | |
| April 20, 2021, 8 a.m. | 0.7 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 25.7 μg/m3 (80) | 80.0 | |
| April 20, 2021, 7 a.m. | 0.7 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 26.2 μg/m3 (81) | 81.0 | |
| April 20, 2021, 6 a.m. | 0.8 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | N/A | 45.0 | |
| April 20, 2021, 5 a.m. | 1.0 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | N/A | 44.0 | |
| April 20, 2021, 4 a.m. | 3.5 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| April 20, 2021, 3 a.m. | 5.7 ppb (6) | 0.3 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 3.9 μg/m3 (17) | 42.0 | |
| April 20, 2021, 2 a.m. | 2.9 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 2.8 μg/m3 (12) | 49.0 | |
| April 20, 2021, 1 a.m. | 2.1 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 20, 2021, midnight | 2.5 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 19, 2021, 11 p.m. | 2.7 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 19, 2021, 10 p.m. | 2.9 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 19, 2021, 9 p.m. | 2.7 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 19, 2021, 8 p.m. | 2.3 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 3.5 μg/m3 (15) | 50.0 | |
| April 19, 2021, 7 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 3.6 μg/m3 (16) | 48.0 | |
| April 19, 2021, 6 p.m. | 2.3 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | N/A | 46.0 | |
| April 19, 2021, 5 p.m. | 2.2 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| April 19, 2021, 4 p.m. | 5.0 ppb (5) | 1.5 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 13.7 μg/m3 (55) | 55.0 | |
| April 19, 2021, 3 p.m. | 4.1 ppb (4) | 1.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 8.4 μg/m3 (36) | 36.0 | |
| April 19, 2021, 2 p.m. | 3.8 ppb (4) | 1.1 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | N/A | 35.0 | |
| April 19, 2021, 1 p.m. | 3.1 ppb (3) | 0.5 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | N/A | 35.0 | |
| April 19, 2021, noon | 6.4 ppb (7) | 0.9 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | N/A | 32.0 | |
| April 19, 2021, 11 a.m. | 1.7 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 5.0 μg/m3 (21) | 37.0 | |
| April 19, 2021, 10 a.m. | 1.3 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 5.1 μg/m3 (22) | 38.0 | |
| April 19, 2021, 9 a.m. | 1.3 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 5.3 μg/m3 (23) | 38.0 | |
| April 19, 2021, 8 a.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 5.2 μg/m3 (22) | 40.0 | |
| April 19, 2021, 7 a.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 5.9 μg/m3 (25) | 42.0 | |
| April 19, 2021, 6 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | N/A | 44.0 | |
| April 19, 2021, 5 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | N/A | 45.0 | |
| April 19, 2021, 4 a.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 4.6 μg/m3 (20) | 46.0 | |
| April 19, 2021, 3 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 5.1 μg/m3 (22) | 49.0 | |
| April 19, 2021, 2 a.m. | 1.0 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 5.8 μg/m3 (25) | 50.0 | |
| April 19, 2021, 1 a.m. | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 55.0 ppb (51) | N/A | N/A | 6.1 μg/m3 (26) | 51.0 | |
| April 19, 2021, midnight | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 56.0 ppb (55) | N/A | N/A | 5.4 μg/m3 (23) | 55.0 | |
| April 18, 2021, 11 p.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 55.0 ppb (51) | N/A | N/A | 4.5 μg/m3 (19) | 51.0 | |
| April 18, 2021, 10 p.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 56.0 ppb (55) | N/A | N/A | 4.2 μg/m3 (18) | 55.0 | |
| April 18, 2021, 9 p.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 55.0 ppb (51) | N/A | N/A | 4.1 μg/m3 (18) | 51.0 | |
| April 18, 2021, 8 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 3.9 μg/m3 (17) | 50.0 | |
| April 18, 2021, 7 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 3.5 μg/m3 (15) | 50.0 | |
| April 18, 2021, 6 p.m. | 0.8 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 3.3 μg/m3 (14) | 50.0 | |
| April 18, 2021, 5 p.m. | 0.8 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 3.0 μg/m3 (13) | 49.0 | |
| April 18, 2021, 4 p.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.8 μg/m3 (12) | 46.0 | |
| April 18, 2021, 3 p.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 2.4 μg/m3 (10) | 41.0 | |
| April 18, 2021, 2 p.m. | 1.7 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 2.4 μg/m3 (10) | 36.0 | |
| April 18, 2021, 1 p.m. | 1.5 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 2.4 μg/m3 (10) | 37.0 | |
| April 18, 2021, noon | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 2.3 μg/m3 (10) | 36.0 | |
| April 18, 2021, 11 a.m. | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 2.2 μg/m3 (10) | 37.0 | |
| April 18, 2021, 10 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 2.3 μg/m3 (10) | 38.0 | |
| April 18, 2021, 9 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 2.3 μg/m3 (10) | 40.0 | |
| April 18, 2021, 8 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 2.5 μg/m3 (11) | 39.0 | |
| April 18, 2021, 7 a.m. | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 2.5 μg/m3 (11) | 40.0 | |
| April 18, 2021, 6 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | N/A | 41.0 | |
| April 18, 2021, 5 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | N/A | 42.0 | |
| April 18, 2021, 4 a.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 3.0 μg/m3 (13) | 44.0 | |
| April 18, 2021, 3 a.m. | 1.1 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.8 μg/m3 (12) | 44.0 | |
| April 18, 2021, 2 a.m. | 2.0 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 2.4 μg/m3 (10) | 41.0 | |
| April 18, 2021, 1 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.7 μg/m3 (12) | 43.0 | |
| April 18, 2021, midnight | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.4 μg/m3 (10) | 43.0 | |
| April 17, 2021, 11 p.m. | 1.4 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.8 μg/m3 (12) | 43.0 | |
| April 17, 2021, 10 p.m. | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.0 μg/m3 (9) | 43.0 | |
| April 17, 2021, 9 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 2.1 μg/m3 (9) | 42.0 | |
| April 17, 2021, 8 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 1.8 μg/m3 (8) | 41.0 | |
| April 17, 2021, 7 p.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 1.8 μg/m3 (8) | 40.0 | |
| April 17, 2021, 6 p.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 1.6 μg/m3 (7) | 39.0 | |
| April 17, 2021, 5 p.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 1.5 μg/m3 (7) | 38.0 | |
| April 17, 2021, 4 p.m. | 1.5 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 1.4 μg/m3 (6) | 37.0 | |
| April 17, 2021, 3 p.m. | 1.7 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 1.5 μg/m3 (7) | 35.0 | |
| April 17, 2021, 2 p.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 1.5 μg/m3 (7) | 34.0 | |
| April 17, 2021, 1 p.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 1.6 μg/m3 (7) | 33.0 | |
| April 17, 2021, noon | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 1.5 μg/m3 (7) | 34.0 | |
| April 17, 2021, 11 a.m. | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 1.3 μg/m3 (6) | 36.0 | |
| April 17, 2021, 10 a.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 1.3 μg/m3 (6) | 38.0 | |
| April 17, 2021, 9 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 1.2 μg/m3 (5) | 39.0 | |
| April 17, 2021, 8 a.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 1.2 μg/m3 (5) | 38.0 | |
| April 17, 2021, 7 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 1.3 μg/m3 (6) | 37.0 | |
| April 17, 2021, 6 a.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| April 17, 2021, 5 a.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | N/A | 37.0 | |
| April 17, 2021, 4 a.m. | 1.1 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 1.8 μg/m3 (8) | 38.0 | |
| April 17, 2021, 3 a.m. | 1.1 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 2.5 μg/m3 (11) | 38.0 | |
| April 17, 2021, 2 a.m. | 1.4 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 2.1 μg/m3 (9) | 39.0 | |
| April 17, 2021, 1 a.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.7 μg/m3 (12) | 44.0 | |
| April 17, 2021, midnight | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 3.0 μg/m3 (13) | 43.0 | |
| April 16, 2021, 11 p.m. | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.3 μg/m3 (10) | 44.0 | |
| April 16, 2021, 10 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.9 μg/m3 (13) | 45.0 | |
| April 16, 2021, 9 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 3.4 μg/m3 (15) | 44.0 | |
| April 16, 2021, 8 p.m. | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.3 μg/m3 (10) | 45.0 | |
| April 16, 2021, 7 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.1 μg/m3 (9) | 44.0 | |
| April 16, 2021, 6 p.m. | 1.6 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.2 μg/m3 (10) | 44.0 | |
| April 16, 2021, 5 p.m. | 2.8 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 2.1 μg/m3 (9) | 41.0 | |
| April 16, 2021, 4 p.m. | 2.7 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 2.3 μg/m3 (10) | 38.0 | |
| April 16, 2021, 3 p.m. | 2.1 ppb (2) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 2.0 μg/m3 (9) | 36.0 | |
| April 16, 2021, 2 p.m. | 4.0 ppb (4) | 1.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 3.6 μg/m3 (16) | 29.0 | |
| April 16, 2021, 1 p.m. | 7.7 ppb (8) | 1.5 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 3.3 μg/m3 (14) | 25.0 | |
| April 16, 2021, noon | 3.1 ppb (3) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 2.3 μg/m3 (10) | 28.0 | |
| April 16, 2021, 11 a.m. | 1.8 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 1.9 μg/m3 (8) | 31.0 | |
| April 16, 2021, 10 a.m. | 1.7 ppb (2) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 1.7 μg/m3 (8) | 34.0 | |
| April 16, 2021, 9 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 1.6 μg/m3 (7) | 36.0 | |
| April 16, 2021, 8 a.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 1.5 μg/m3 (7) | 37.0 | |
| April 16, 2021, 7 a.m. | 1.1 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 1.4 μg/m3 (6) | 38.0 | |
| April 16, 2021, 6 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| April 16, 2021, 5 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | N/A | 39.0 | |
| April 16, 2021, 4 a.m. | 1.7 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 1.7 μg/m3 (8) | 38.0 | |
| April 16, 2021, 3 a.m. | 1.6 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 1.8 μg/m3 (8) | 39.0 | |
| April 16, 2021, 2 a.m. | 1.6 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 1.9 μg/m3 (8) | 39.0 | |
| April 16, 2021, 1 a.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 2.5 μg/m3 (11) | 41.0 | |
| April 16, 2021, midnight | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.8 μg/m3 (12) | 44.0 | |
| April 15, 2021, 11 p.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.6 μg/m3 (11) | 43.0 | |
| April 15, 2021, 10 p.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.8 μg/m3 (12) | 43.0 | |
| April 15, 2021, 9 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.8 μg/m3 (12) | 44.0 | |
| April 15, 2021, 8 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.9 μg/m3 (13) | 44.0 | |
| April 15, 2021, 7 p.m. | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 3.1 μg/m3 (13) | 46.0 | |
| April 15, 2021, 6 p.m. | 1.6 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 3.2 μg/m3 (14) | 50.0 | |
| April 15, 2021, 5 p.m. | 1.7 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 56.0 ppb (55) | N/A | N/A | 4.3 μg/m3 (18) | 55.0 | |
| April 15, 2021, 4 p.m. | 2.8 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 55.0 ppb (51) | N/A | N/A | 3.7 μg/m3 (16) | 51.0 | |
| April 15, 2021, 3 p.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 2.9 μg/m3 (13) | 50.0 | |
| April 15, 2021, 2 p.m. | 1.9 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 2.6 μg/m3 (11) | 50.0 | |
| April 15, 2021, 1 p.m. | 1.6 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 55.0 ppb (51) | N/A | N/A | 2.6 μg/m3 (11) | 51.0 | |
| April 15, 2021, noon | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 55.0 ppb (51) | N/A | N/A | 2.6 μg/m3 (11) | 51.0 | |
| April 15, 2021, 11 a.m. | N/A | 0.2 ppb (1) | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.3 μg/m3 (10) | 47.0 | |
| April 15, 2021, 10 a.m. | 1.0 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.2 μg/m3 (10) | 45.0 | |
| April 15, 2021, 9 a.m. | 1.1 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.7 μg/m3 (12) | 47.0 | |
| April 15, 2021, 8 a.m. | 1.0 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 3.3 μg/m3 (14) | 48.0 | |
| April 15, 2021, 7 a.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 3.0 μg/m3 (13) | 48.0 | |
| April 15, 2021, 6 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 15, 2021, 5 a.m. | 1.1 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| April 15, 2021, 4 a.m. | 4.6 ppb (5) | 0.2 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 6.8 μg/m3 (29) | 46.0 | |
| April 15, 2021, 3 a.m. | 6.9 ppb (7) | 0.3 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 8.0 μg/m3 (34) | 46.0 | |
| April 15, 2021, 2 a.m. | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 58.0 ppb (61) | N/A | N/A | 7.4 μg/m3 (31) | 61.0 | |
| April 15, 2021, 1 a.m. | 1.1 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 59.0 ppb (65) | N/A | N/A | 7.3 μg/m3 (31) | 65.0 | |
| April 15, 2021, midnight | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 59.0 ppb (65) | N/A | N/A | 7.3 μg/m3 (31) | 65.0 | |
| April 14, 2021, 11 p.m. | 1.8 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 58.0 ppb (61) | N/A | N/A | 8.2 μg/m3 (35) | 61.0 | |
| April 14, 2021, 10 p.m. | 2.5 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 7.8 μg/m3 (33) | 58.0 | |
| April 14, 2021, 9 p.m. | 2.2 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 8.4 μg/m3 (36) | 58.0 | |
| April 14, 2021, 8 p.m. | 2.1 ppb (2) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 8.5 μg/m3 (36) | 58.0 | |
| April 14, 2021, 7 p.m. | 2.1 ppb (2) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 55.0 ppb (51) | N/A | N/A | 9.1 μg/m3 (38) | 51.0 |