Grand Cyn (Mather Point Amphitheater) AZ, US: 36.060444, -112.107028
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 5, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -1.3 μg/m3 (0) | 35.0 | |
| April 5, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -1.3 μg/m3 (0) | 35.0 | |
| April 5, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -1.4 μg/m3 (0) | 36.0 | |
| April 5, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -1.3 μg/m3 (0) | 36.0 | |
| April 5, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.2 μg/m3 (0) | 38.0 | |
| April 5, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -0.9 μg/m3 (0) | 38.0 | |
| April 5, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | -0.5 μg/m3 (0) | 41.0 | |
| April 5, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | -0.5 μg/m3 (0) | 41.0 | |
| April 4, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | N/A | -0.2 μg/m3 (0) | 42.0 | |
| April 4, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | N/A | -0.1 μg/m3 (0) | 42.0 | |
| April 4, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | N/A | 0.0 μg/m3 (0) | 42.0 | |
| April 4, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | N/A | -0.8 μg/m3 (0) | 42.0 | |
| April 4, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | N/A | -1.3 μg/m3 (0) | 42.0 | |
| April 4, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (43) | N/A | N/A | -1.4 μg/m3 (0) | 43.0 | |
| April 4, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (43) | N/A | N/A | -1.4 μg/m3 (0) | 43.0 | |
| April 4, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (43) | N/A | N/A | -1.3 μg/m3 (0) | 43.0 | |
| April 4, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | -2.0 μg/m3 (0) | 41.0 | |
| April 4, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -2.4 μg/m3 (0) | 39.0 | |
| April 4, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -2.5 μg/m3 (0) | 38.0 | |
| April 4, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -2.5 μg/m3 (0) | 38.0 | |
| April 4, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -2.7 μg/m3 (0) | 38.0 | |
| April 4, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -2.7 μg/m3 (0) | 38.0 | |
| April 4, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -2.7 μg/m3 (0) | 36.0 | |
| April 4, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | -2.6 μg/m3 (0) | 35.0 | |
| April 4, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -2.4 μg/m3 (0) | 34.0 | |
| April 4, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | -2.1 μg/m3 (0) | 33.0 | |
| April 4, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -1.9 μg/m3 (0) | 34.0 | |
| April 4, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -1.3 μg/m3 (0) | 35.0 | |
| April 4, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -0.3 μg/m3 (0) | 38.0 | |
| April 4, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -1.3 μg/m3 (0) | 39.0 | |
| April 4, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.0 μg/m3 (0) | 38.0 | |
| April 4, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.0 μg/m3 (0) | 38.0 | |
| April 3, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -0.9 μg/m3 (0) | 39.0 | |
| April 3, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | -0.7 μg/m3 (0) | 41.0 | |
| April 3, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -1.2 μg/m3 (0) | 37.0 | |
| April 3, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -1.6 μg/m3 (0) | 36.0 | |
| April 3, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -1.9 μg/m3 (0) | 35.0 | |
| April 3, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | -2.1 μg/m3 (0) | 35.0 | |
| April 3, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -2.3 μg/m3 (0) | 34.0 | |
| April 3, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -2.5 μg/m3 (0) | 34.0 | |
| April 3, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | -2.8 μg/m3 (0) | 33.0 | |
| April 3, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | -3.1 μg/m3 (0) | 33.0 | |
| April 3, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -3.2 μg/m3 (0) | 34.0 | |
| April 3, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -3.1 μg/m3 (0) | 35.0 | |
| April 3, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -3.0 μg/m3 (0) | 35.0 | |
| April 3, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -3.0 μg/m3 (0) | 37.0 | |
| April 3, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -2.9 μg/m3 (0) | 37.0 | |
| April 3, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -2.8 μg/m3 (0) | 36.0 | |
| April 3, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -2.7 μg/m3 (0) | 36.0 | |
| April 3, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -2.6 μg/m3 (0) | 35.0 | |
| April 3, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -2.4 μg/m3 (0) | 35.0 | |
| April 3, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -2.2 μg/m3 (0) | 34.0 | |
| April 3, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -2.0 μg/m3 (0) | 35.0 | |
| April 3, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -1.6 μg/m3 (0) | 35.0 | |
| April 3, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | -1.1 μg/m3 (0) | 35.0 | |
| April 3, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -1.0 μg/m3 (0) | 34.0 | |
| April 2, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -1.1 μg/m3 (0) | 34.0 | |
| April 2, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | -1.3 μg/m3 (0) | 35.0 | |
| April 2, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -1.3 μg/m3 (0) | 36.0 | |
| April 2, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.4 μg/m3 (0) | 38.0 | |
| April 2, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.7 μg/m3 (0) | 38.0 | |
| April 2, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.8 μg/m3 (0) | 38.0 | |
| April 2, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.4 μg/m3 (0) | 38.0 | |
| April 2, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -0.9 μg/m3 (0) | 38.0 | |
| April 2, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.1 μg/m3 (0) | 38.0 | |
| April 2, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -0.9 μg/m3 (0) | 37.0 | |
| April 2, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -0.9 μg/m3 (0) | 37.0 | |
| April 2, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -1.1 μg/m3 (0) | 37.0 | |
| April 2, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.3 μg/m3 (0) | 38.0 | |
| April 2, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.6 μg/m3 (0) | 38.0 | |
| April 2, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -1.6 μg/m3 (0) | 37.0 | |
| April 2, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -2.0 μg/m3 (0) | 35.0 | |
| April 2, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -2.1 μg/m3 (0) | 35.0 | |
| April 2, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -2.0 μg/m3 (0) | 35.0 | |
| April 2, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | -1.8 μg/m3 (0) | 35.0 | |
| April 2, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.6 μg/m3 (0) | 38.0 | |
| April 2, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -1.5 μg/m3 (0) | 37.0 | |
| April 2, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -1.2 μg/m3 (0) | 37.0 | |
| April 2, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | -0.8 μg/m3 (0) | 40.0 | |
| April 2, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | -0.6 μg/m3 (0) | 41.0 | |
| April 1, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | -0.8 μg/m3 (0) | 40.0 | |
| April 1, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -0.9 μg/m3 (0) | 39.0 | |
| April 1, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -1.0 μg/m3 (0) | 39.0 | |
| April 1, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -1.2 μg/m3 (0) | 39.0 | |
| April 1, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -1.2 μg/m3 (0) | 39.0 | |
| April 1, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -1.3 μg/m3 (0) | 38.0 | |
| April 1, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -1.7 μg/m3 (0) | 36.0 | |
| April 1, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | -2.2 μg/m3 (0) | 35.0 | |
| April 1, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | -2.4 μg/m3 (0) | 35.0 | |
| April 1, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | -2.4 μg/m3 (0) | 33.0 | |
| April 1, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | -2.2 μg/m3 (0) | 33.0 | |
| April 1, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | -2.0 μg/m3 (0) | 33.0 | |
| April 1, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | -2.0 μg/m3 (0) | 33.0 | |
| April 1, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | -1.9 μg/m3 (0) | 33.0 | |
| April 1, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | N/A | -1.9 μg/m3 (0) | 32.0 | |
| April 1, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -1.7 μg/m3 (0) | 34.0 | |
| April 1, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -1.7 μg/m3 (0) | 34.0 | |
| April 1, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -1.7 μg/m3 (0) | 34.0 | |
| April 1, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | -1.7 μg/m3 (0) | 35.0 | |
| April 1, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -0.9 μg/m3 (0) | 35.0 | |
| April 1, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -1.1 μg/m3 (0) | 37.0 | |
| April 1, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -1.2 μg/m3 (0) | 38.0 | |
| April 1, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -0.9 μg/m3 (0) | 38.0 | |
| April 1, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -0.9 μg/m3 (0) | 39.0 | |
| March 31, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -0.8 μg/m3 (0) | 38.0 | |
| March 31, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -1.1 μg/m3 (0) | 37.0 | |
| March 31, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -1.5 μg/m3 (0) | 36.0 | |
| March 31, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -1.7 μg/m3 (0) | 37.0 | |
| March 31, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -1.7 μg/m3 (0) | 37.0 | |
| March 31, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -1.5 μg/m3 (0) | 35.0 | |
| March 31, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -1.4 μg/m3 (0) | 35.0 | |
| March 31, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.5 μg/m3 (0) | 38.0 | |
| March 31, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | -1.8 μg/m3 (0) | 40.0 | |
| March 31, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | -2.0 μg/m3 (0) | 40.0 | |
| March 31, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | N/A | -2.0 μg/m3 (0) | 42.0 | |
| March 31, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | N/A | -2.1 μg/m3 (0) | 42.0 | |
| March 31, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (43) | N/A | N/A | -1.8 μg/m3 (0) | 43.0 | |
| March 31, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (44) | N/A | N/A | -1.6 μg/m3 (0) | 44.0 | |
| March 31, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | N/A | -1.4 μg/m3 (0) | 42.0 | |
| March 31, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -2.0 μg/m3 (0) | 38.0 | |
| March 31, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -2.3 μg/m3 (0) | 37.0 | |
| March 31, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -2.6 μg/m3 (0) | 35.0 | |
| March 31, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -2.7 μg/m3 (0) | 36.0 | |
| March 31, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -2.5 μg/m3 (0) | 37.0 | |
| March 31, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -2.2 μg/m3 (0) | 37.0 | |
| March 31, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -1.7 μg/m3 (0) | 38.0 | |
| March 31, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -1.4 μg/m3 (0) | 38.0 | |
| March 31, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.6 μg/m3 (0) | 38.0 | |
| March 30, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -1.8 μg/m3 (0) | 37.0 | |
| March 30, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -2.0 μg/m3 (0) | 36.0 | |
| March 30, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -2.4 μg/m3 (0) | 36.0 | |
| March 30, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -2.7 μg/m3 (0) | 37.0 | |
| March 30, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -2.7 μg/m3 (0) | 37.0 | |
| March 30, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -2.8 μg/m3 (0) | 38.0 | |
| March 30, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | -2.6 μg/m3 (0) | 38.0 | |
| March 30, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -2.3 μg/m3 (0) | 38.0 | |
| March 30, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -1.6 μg/m3 (0) | 37.0 | |
| March 30, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | -1.6 μg/m3 (0) | 38.0 | |
| March 30, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -1.8 μg/m3 (0) | 39.0 | |
| March 30, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | -1.8 μg/m3 (0) | 40.0 | |
| March 30, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | -1.8 μg/m3 (0) | 41.0 | |
| March 30, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | N/A | -1.9 μg/m3 (0) | 42.0 | |
| March 30, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | -2.2 μg/m3 (0) | 41.0 | |
| March 30, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | -2.4 μg/m3 (0) | 41.0 | |
| March 30, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | -2.8 μg/m3 (0) | 40.0 | |
| March 30, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | -2.7 μg/m3 (0) | 40.0 | |
| March 30, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -2.7 μg/m3 (0) | 39.0 | |
| March 30, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | -2.6 μg/m3 (0) | 40.0 | |
| March 30, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | -2.5 μg/m3 (0) | 40.0 | |
| March 30, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -2.3 μg/m3 (0) | 39.0 | |
| March 30, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | -2.0 μg/m3 (0) | 41.0 | |
| March 30, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | -1.9 μg/m3 (0) | 41.0 | |
| March 29, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -1.8 μg/m3 (0) | 39.0 | |
| March 29, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -1.7 μg/m3 (0) | 39.0 | |
| March 29, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | N/A | -1.7 μg/m3 (0) | 42.0 | |
| March 29, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | N/A | -1.8 μg/m3 (0) | 42.0 | |
| March 29, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | -2.0 μg/m3 (0) | 39.0 | |
| March 29, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | -2.2 μg/m3 (0) | 34.0 | |
| March 29, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | N/A | -2.3 μg/m3 (0) | 32.0 | |
| March 29, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | -2.6 μg/m3 (0) | 33.0 | |
| March 29, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | -3.1 μg/m3 (0) | 33.0 | |
| March 29, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | -3.2 μg/m3 (0) | 36.0 | |
| March 29, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | -3.2 μg/m3 (0) | 37.0 | |
| March 29, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | -3.3 μg/m3 (0) | 35.0 | |
| March 29, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | -3.2 μg/m3 (0) | 33.0 | |
| March 29, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | N/A | -3.2 μg/m3 (0) | 32.0 | |
| March 29, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | N/A | -3.0 μg/m3 (0) | 32.0 | |
| March 29, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | N/A | -2.9 μg/m3 (0) | 32.0 |