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 10, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 1.2 μg/m3 (5) | 41.0 | |
| April 10, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 1.1 μg/m3 (5) | 40.0 | |
| April 10, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 1.1 μg/m3 (5) | 40.0 | |
| April 10, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 1.3 μg/m3 (6) | 40.0 | |
| April 10, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 1.5 μg/m3 (7) | 39.0 | |
| April 10, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 1.9 μg/m3 (8) | 39.0 | |
| April 10, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 1.7 μg/m3 (8) | 39.0 | |
| April 10, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 1.9 μg/m3 (8) | 38.0 | |
| April 10, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 2.0 μg/m3 (9) | 39.0 | |
| April 10, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 1.8 μg/m3 (8) | 40.0 | |
| April 9, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 1.9 μg/m3 (8) | 41.0 | |
| April 9, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 2.0 μg/m3 (9) | 41.0 | |
| April 9, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.5 μg/m3 (11) | 43.0 | |
| April 9, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.6 μg/m3 (11) | 43.0 | |
| April 9, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.8 μg/m3 (12) | 43.0 | |
| April 9, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.6 μg/m3 (11) | 43.0 | |
| April 9, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 2.5 μg/m3 (11) | 42.0 | |
| April 9, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 2.3 μg/m3 (10) | 42.0 | |
| April 9, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.0 μg/m3 (9) | 43.0 | |
| April 9, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 1.8 μg/m3 (8) | 44.0 | |
| April 9, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 1.7 μg/m3 (8) | 44.0 | |
| April 9, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 1.9 μg/m3 (8) | 45.0 | |
| April 9, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 1.7 μg/m3 (8) | 45.0 | |
| April 9, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 1.7 μg/m3 (8) | 46.0 | |
| April 9, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 1.9 μg/m3 (8) | 45.0 | |
| April 9, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.1 μg/m3 (9) | 47.0 | |
| April 9, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 2.1 μg/m3 (9) | 49.0 | |
| April 9, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (51) | N/A | N/A | 2.4 μg/m3 (10) | 51.0 | |
| April 9, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 2.5 μg/m3 (11) | 58.0 | |
| April 9, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 2.6 μg/m3 (11) | 58.0 | |
| April 9, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (51) | N/A | N/A | 2.6 μg/m3 (11) | 51.0 | |
| April 9, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 2.9 μg/m3 (13) | 50.0 | |
| April 9, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 3.6 μg/m3 (16) | 43.0 | |
| April 9, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 3.6 μg/m3 (16) | 40.0 | |
| April 8, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 3.7 μg/m3 (16) | 40.0 | |
| April 8, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 4.4 μg/m3 (19) | 41.0 | |
| April 8, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 2.5 μg/m3 (11) | 41.0 | |
| April 8, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 2.3 μg/m3 (10) | 41.0 | |
| April 8, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 2.2 μg/m3 (10) | 42.0 | |
| April 8, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 2.1 μg/m3 (9) | 42.0 | |
| April 8, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 2.0 μg/m3 (9) | 42.0 | |
| April 8, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 1.9 μg/m3 (8) | 41.0 | |
| April 8, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 1.9 μg/m3 (8) | 42.0 | |
| April 8, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 2.4 μg/m3 (10) | 42.0 | |
| April 8, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.0 μg/m3 (9) | 44.0 | |
| April 8, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 1.9 μg/m3 (8) | 45.0 | |
| April 8, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 1.9 μg/m3 (8) | 46.0 | |
| April 8, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.0 μg/m3 (9) | 47.0 | |
| April 8, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.0 μg/m3 (9) | 46.0 | |
| April 8, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.0 μg/m3 (9) | 46.0 | |
| April 8, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.2 μg/m3 (10) | 47.0 | |
| April 8, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 2.4 μg/m3 (10) | 49.0 | |
| April 8, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 2.5 μg/m3 (11) | 50.0 | |
| April 8, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.6 μg/m3 (11) | 46.0 | |
| April 8, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.5 μg/m3 (11) | 45.0 | |
| April 8, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.7 μg/m3 (12) | 46.0 | |
| April 8, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.9 μg/m3 (13) | 46.0 | |
| April 8, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 3.0 μg/m3 (13) | 46.0 | |
| April 7, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.9 μg/m3 (13) | 46.0 | |
| April 7, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.8 μg/m3 (12) | 46.0 | |
| April 7, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.7 μg/m3 (12) | 45.0 | |
| April 7, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.4 μg/m3 (10) | 45.0 | |
| April 7, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.1 μg/m3 (9) | 45.0 | |
| April 7, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.0 μg/m3 (9) | 45.0 | |
| April 7, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.0 μg/m3 (9) | 44.0 | |
| April 7, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 1.8 μg/m3 (8) | 47.0 | |
| April 7, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 1.5 μg/m3 (7) | 49.0 | |
| April 7, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 1.2 μg/m3 (5) | 50.0 | |
| April 7, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 1.1 μg/m3 (5) | 58.0 | |
| April 7, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 1.2 μg/m3 (5) | 58.0 | |
| April 7, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (61) | N/A | N/A | 1.2 μg/m3 (5) | 61.0 | |
| April 7, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (61) | N/A | N/A | 1.2 μg/m3 (5) | 61.0 | |
| April 7, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 1.3 μg/m3 (6) | 58.0 | |
| April 7, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 1.4 μg/m3 (6) | 58.0 | |
| April 7, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 1.4 μg/m3 (6) | 58.0 | |
| April 7, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (61) | N/A | N/A | 1.5 μg/m3 (7) | 61.0 | |
| April 7, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 ppb (65) | N/A | N/A | 1.6 μg/m3 (7) | 65.0 | |
| April 7, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 ppb (71) | N/A | N/A | 1.7 μg/m3 (8) | 71.0 | |
| April 7, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (78) | N/A | N/A | 1.9 μg/m3 (8) | 78.0 | |
| April 7, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (78) | N/A | N/A | 2.1 μg/m3 (9) | 78.0 | |
| April 7, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 ppb (71) | N/A | N/A | 2.5 μg/m3 (11) | 71.0 | |
| April 7, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (55) | N/A | N/A | 2.5 μg/m3 (11) | 55.0 | |
| April 6, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (55) | N/A | N/A | 2.6 μg/m3 (11) | 55.0 | |
| April 6, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (61) | N/A | N/A | 2.8 μg/m3 (12) | 61.0 | |
| April 6, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (55) | N/A | N/A | 2.8 μg/m3 (12) | 55.0 | |
| April 6, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (55) | N/A | N/A | 4.4 μg/m3 (19) | 55.0 | |
| April 6, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (55) | N/A | N/A | 6.3 μg/m3 (27) | 55.0 | |
| April 6, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 5.1 μg/m3 (22) | 50.0 | |
| April 6, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 5.1 μg/m3 (22) | 47.0 | |
| April 6, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 5.9 μg/m3 (25) | 46.0 | |
| April 6, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 6.3 μg/m3 (27) | 45.0 | |
| April 6, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 5.8 μg/m3 (25) | 43.0 | |
| April 6, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 3.3 μg/m3 (14) | 43.0 | |
| April 6, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.0 μg/m3 (9) | 43.0 | |
| April 6, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 2.3 μg/m3 (10) | 42.0 | |
| April 6, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 2.4 μg/m3 (10) | 42.0 | |
| April 6, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.6 μg/m3 (11) | 43.0 | |
| April 6, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.9 μg/m3 (13) | 43.0 | |
| April 6, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 3.0 μg/m3 (13) | 45.0 | |
| April 6, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 3.2 μg/m3 (14) | 46.0 | |
| April 6, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 3.7 μg/m3 (16) | 46.0 | |
| April 6, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 4.4 μg/m3 (19) | 48.0 | |
| April 6, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 4.8 μg/m3 (20) | 48.0 | |
| April 6, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 4.5 μg/m3 (19) | 49.0 | |
| April 6, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 3.8 μg/m3 (16) | 50.0 | |
| April 6, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 3.6 μg/m3 (16) | 50.0 | |
| April 5, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 3.5 μg/m3 (15) | 50.0 | |
| April 5, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 3.4 μg/m3 (15) | 50.0 | |
| April 5, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 3.0 μg/m3 (13) | 49.0 | |
| April 5, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 2.8 μg/m3 (12) | 50.0 | |
| April 5, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 2.7 μg/m3 (12) | 50.0 | |
| April 5, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 2.5 μg/m3 (11) | 50.0 | |
| April 5, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 2.4 μg/m3 (10) | 49.0 | |
| April 5, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.3 μg/m3 (10) | 47.0 | |
| April 5, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.1 μg/m3 (9) | 45.0 | |
| April 5, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.0 μg/m3 (9) | 46.0 | |
| April 5, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 1.8 μg/m3 (8) | 46.0 | |
| April 5, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 1.9 μg/m3 (8) | 46.0 | |
| April 5, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 1.9 μg/m3 (8) | 46.0 | |
| April 5, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.1 μg/m3 (9) | 45.0 | |
| April 5, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.6 μg/m3 (11) | 47.0 | |
| April 5, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 3.0 μg/m3 (13) | 46.0 | |
| April 5, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.5 μg/m3 (11) | 47.0 | |
| April 5, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.1 μg/m3 (9) | 47.0 | |
| April 5, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 2.2 μg/m3 (10) | 48.0 | |
| April 5, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 2.8 μg/m3 (12) | 48.0 | |
| April 5, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 3.2 μg/m3 (14) | 49.0 | |
| April 5, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 2.9 μg/m3 (13) | 49.0 | |
| April 5, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 2.9 μg/m3 (13) | 48.0 | |
| April 5, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 2.7 μg/m3 (12) | 48.0 | |
| April 4, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 2.5 μg/m3 (11) | 48.0 | |
| April 4, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.2 μg/m3 (10) | 47.0 | |
| April 4, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.7 μg/m3 (12) | 46.0 | |
| April 4, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.6 μg/m3 (11) | 45.0 | |
| April 4, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 2.8 μg/m3 (12) | 45.0 | |
| April 4, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 3.6 μg/m3 (16) | 45.0 | |
| April 4, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 3.2 μg/m3 (14) | 48.0 | |
| April 4, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 2.6 μg/m3 (11) | 50.0 | |
| April 4, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 2.6 μg/m3 (11) | 49.0 | |
| April 4, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.3 μg/m3 (10) | 46.0 | |
| April 4, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 2.1 μg/m3 (9) | 50.0 | |
| April 4, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 2.1 μg/m3 (9) | 48.0 | |
| April 4, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 2.2 μg/m3 (10) | 49.0 | |
| April 4, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 2.2 μg/m3 (10) | 50.0 | |
| April 4, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 2.2 μg/m3 (10) | 50.0 | |
| April 4, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 2.3 μg/m3 (10) | 48.0 | |
| April 4, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.5 μg/m3 (11) | 47.0 | |
| April 4, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.6 μg/m3 (11) | 46.0 | |
| April 4, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 2.9 μg/m3 (13) | 47.0 | |
| April 4, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 3.2 μg/m3 (14) | 46.0 | |
| April 4, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 3.0 μg/m3 (13) | 44.0 | |
| April 4, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 3.2 μg/m3 (14) | 43.0 | |
| April 4, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 3.1 μg/m3 (13) | 43.0 | |
| April 4, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.6 μg/m3 (11) | 44.0 | |
| April 3, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 2.3 μg/m3 (10) | 44.0 | |
| April 3, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 2.1 μg/m3 (9) | 43.0 | |
| April 3, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 1.9 μg/m3 (8) | 42.0 | |
| April 3, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 1.8 μg/m3 (8) | 41.0 | |
| April 3, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 1.7 μg/m3 (8) | 38.0 | |
| April 3, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 1.8 μg/m3 (8) | 37.0 | |
| April 3, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 1.7 μg/m3 (8) | 39.0 | |
| April 3, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 1.9 μg/m3 (8) | 40.0 | |
| April 3, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 1.5 μg/m3 (7) | 41.0 | |
| April 3, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 1.3 μg/m3 (6) | 42.0 | |
| April 3, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 1.3 μg/m3 (6) | 44.0 | |
| April 3, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 1.1 μg/m3 (5) | 45.0 | |
| April 3, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 1.3 μg/m3 (6) | 45.0 | |
| April 3, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 1.3 μg/m3 (6) | 46.0 |