Kenmare (N Dakota Hwy 8) ND, US: 48.641899, -102.402199
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 10, 2021, 10 p.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 47.0 ppb (44) | N/A | N/A | 4.7 μg/m3 (20) | 44.0 | |
| May 10, 2021, 9 p.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 47.0 ppb (44) | N/A | N/A | 5.1 μg/m3 (22) | 44.0 | |
| May 10, 2021, 8 p.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 48.0 ppb (45) | N/A | N/A | 4.8 μg/m3 (20) | 45.0 | |
| May 10, 2021, 7 p.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 47.0 ppb (44) | N/A | N/A | 4.0 μg/m3 (17) | 44.0 | |
| May 10, 2021, 6 p.m. | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 46.0 ppb (43) | N/A | N/A | 3.8 μg/m3 (16) | 43.0 | |
| May 10, 2021, 5 p.m. | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 45.0 ppb (42) | N/A | N/A | 3.6 μg/m3 (16) | 42.0 | |
| May 10, 2021, 4 p.m. | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 4.1 μg/m3 (18) | 42.0 | |
| May 10, 2021, 3 p.m. | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 43.0 ppb (40) | N/A | N/A | 3.3 μg/m3 (14) | 40.0 | |
| May 10, 2021, 2 p.m. | 1.7 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 38.0 ppb (36) | N/A | N/A | 3.7 μg/m3 (16) | 36.0 | |
| May 10, 2021, 1 p.m. | 1.9 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 35.0 ppb (33) | N/A | N/A | 3.6 μg/m3 (16) | 33.0 | |
| May 10, 2021, noon | 1.7 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 27.0 ppb (25) | N/A | N/A | 4.8 μg/m3 (20) | 25.0 | |
| May 10, 2021, 11 a.m. | 1.6 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 29.0 ppb (27) | N/A | N/A | 4.8 μg/m3 (20) | 27.0 | |
| May 10, 2021, 10 a.m. | 1.5 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | N/A | N/A | 4.3 μg/m3 (18) | 30.0 | |
| May 10, 2021, 9 a.m. | 1.5 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | N/A | N/A | 3.9 μg/m3 (17) | 30.0 | |
| May 10, 2021, 8 a.m. | 1.6 ppb (2) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | N/A | N/A | 3.9 μg/m3 (17) | 30.0 | |
| May 10, 2021, 7 a.m. | 1.6 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 31.0 ppb (29) | N/A | N/A | 3.7 μg/m3 (16) | 29.0 | |
| May 10, 2021, 6 a.m. | 2.4 ppb (3) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 33.0 ppb (31) | N/A | N/A | 4.0 μg/m3 (17) | 31.0 | |
| May 10, 2021, 5 a.m. | 2.3 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 34.0 ppb (32) | N/A | N/A | 4.7 μg/m3 (20) | 32.0 | |
| May 10, 2021, 4 a.m. | 2.5 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 37.0 ppb (35) | N/A | N/A | 4.8 μg/m3 (20) | 35.0 | |
| May 10, 2021, 3 a.m. | 2.6 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 38.0 ppb (36) | N/A | N/A | 4.7 μg/m3 (20) | 36.0 | |
| May 10, 2021, 2 a.m. | 1.9 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 41.0 ppb (38) | N/A | N/A | 4.5 μg/m3 (19) | 38.0 | |
| May 10, 2021, 1 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 47.0 ppb (44) | N/A | N/A | 4.4 μg/m3 (19) | 44.0 | |
| May 10, 2021, midnight | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 51.0 ppb (48) | N/A | N/A | 4.9 μg/m3 (21) | 48.0 | |
| May 9, 2021, 11 p.m. | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 50.0 ppb (47) | N/A | N/A | 4.8 μg/m3 (20) | 47.0 | |
| May 9, 2021, 10 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 50.0 ppb (47) | N/A | N/A | 4.6 μg/m3 (20) | 47.0 | |
| May 9, 2021, 9 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 47.0 ppb (44) | N/A | N/A | 4.3 μg/m3 (18) | 44.0 | |
| May 9, 2021, 8 p.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 47.0 ppb (44) | N/A | N/A | 3.9 μg/m3 (17) | 44.0 | |
| May 9, 2021, 7 p.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 46.0 ppb (43) | N/A | N/A | 3.9 μg/m3 (17) | 43.0 | |
| May 9, 2021, 6 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 3.7 μg/m3 (16) | 42.0 | |
| May 9, 2021, 5 p.m. | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 45.0 ppb (42) | N/A | N/A | 3.6 μg/m3 (16) | 42.0 | |
| May 9, 2021, 4 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 44.0 ppb (41) | N/A | N/A | 3.5 μg/m3 (15) | 41.0 | |
| May 9, 2021, 3 p.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 40.0 ppb (38) | N/A | N/A | 3.6 μg/m3 (16) | 38.0 | |
| May 9, 2021, 2 p.m. | 1.7 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 38.0 ppb (36) | N/A | N/A | 4.1 μg/m3 (18) | 36.0 | |
| May 9, 2021, 1 p.m. | 2.2 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 32.0 ppb (30) | N/A | N/A | 4.2 μg/m3 (18) | 30.0 | |
| May 9, 2021, noon | 2.3 ppb (3) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 27.0 ppb (25) | N/A | N/A | 4.9 μg/m3 (21) | 25.0 | |
| May 9, 2021, 11 a.m. | 2.3 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 28.0 ppb (26) | N/A | N/A | 5.1 μg/m3 (22) | 26.0 | |
| May 9, 2021, 10 a.m. | 2.8 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 26.0 ppb (25) | N/A | N/A | 5.8 μg/m3 (25) | 25.0 | |
| May 9, 2021, 9 a.m. | 3.0 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 26.0 ppb (25) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 9, 2021, 8 a.m. | 2.8 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 28.0 ppb (26) | N/A | N/A | 6.1 μg/m3 (26) | 26.0 | |
| May 9, 2021, 7 a.m. | 2.6 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 29.0 ppb (27) | N/A | N/A | 6.1 μg/m3 (26) | 27.0 | |
| May 9, 2021, 6 a.m. | 2.2 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 25.0 ppb (24) | N/A | N/A | 5.1 μg/m3 (22) | 24.0 | |
| May 9, 2021, 5 a.m. | 2.1 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 29.0 ppb (27) | N/A | N/A | 4.7 μg/m3 (20) | 27.0 | |
| May 9, 2021, 4 a.m. | 2.2 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 30.0 ppb (28) | N/A | N/A | 4.5 μg/m3 (19) | 28.0 | |
| May 9, 2021, 3 a.m. | 2.1 ppb (2) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 30.0 ppb (28) | N/A | N/A | 4.4 μg/m3 (19) | 28.0 | |
| May 9, 2021, 2 a.m. | 2.1 ppb (2) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 33.0 ppb (31) | N/A | N/A | 4.7 μg/m3 (20) | 31.0 | |
| May 9, 2021, 1 a.m. | 2.2 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 36.0 ppb (34) | N/A | N/A | 4.9 μg/m3 (21) | 34.0 | |
| May 9, 2021, midnight | 2.0 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 38.0 ppb (36) | N/A | N/A | 4.3 μg/m3 (18) | 36.0 | |
| May 8, 2021, 11 p.m. | 2.0 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 38.0 ppb (36) | N/A | N/A | 4.2 μg/m3 (18) | 36.0 | |
| May 8, 2021, 10 p.m. | 1.9 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 38.0 ppb (36) | N/A | N/A | 4.5 μg/m3 (19) | 36.0 | |
| May 8, 2021, 9 p.m. | 1.6 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 43.0 ppb (40) | N/A | N/A | 4.0 μg/m3 (17) | 40.0 | |
| May 8, 2021, 8 p.m. | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 3.7 μg/m3 (16) | 42.0 | |
| May 8, 2021, 7 p.m. | 1.3 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 44.0 ppb (41) | N/A | N/A | 3.7 μg/m3 (16) | 41.0 | |
| May 8, 2021, 6 p.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 41.0 ppb (38) | N/A | N/A | 4.0 μg/m3 (17) | 38.0 | |
| May 8, 2021, 5 p.m. | 1.8 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 38.0 ppb (36) | N/A | N/A | 4.0 μg/m3 (17) | 36.0 | |
| May 8, 2021, 4 p.m. | 2.3 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 35.0 ppb (33) | N/A | N/A | 4.9 μg/m3 (21) | 33.0 | |
| May 8, 2021, 3 p.m. | 3.0 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 34.0 ppb (32) | N/A | N/A | 6.8 μg/m3 (29) | 32.0 | |
| May 8, 2021, 2 p.m. | 3.3 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 34.0 ppb (32) | N/A | N/A | 6.3 μg/m3 (27) | 32.0 | |
| May 8, 2021, 1 p.m. | 3.1 ppb (3) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 34.0 ppb (32) | N/A | N/A | 6.4 μg/m3 (27) | 32.0 | |
| May 8, 2021, noon | 2.9 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | N/A | N/A | 6.4 μg/m3 (27) | 30.0 | |
| May 8, 2021, 11 a.m. | 2.4 ppb (3) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 33.0 ppb (31) | N/A | N/A | 5.7 μg/m3 (24) | 31.0 | |
| May 8, 2021, 10 a.m. | 2.2 ppb (3) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 35.0 ppb (33) | N/A | N/A | 5.3 μg/m3 (23) | 33.0 | |
| May 8, 2021, 9 a.m. | 2.3 ppb (3) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 36.0 ppb (34) | N/A | N/A | 5.9 μg/m3 (25) | 34.0 | |
| May 8, 2021, 8 a.m. | 2.4 ppb (3) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 36.0 ppb (34) | N/A | N/A | 6.3 μg/m3 (27) | 34.0 | |
| May 8, 2021, 7 a.m. | 2.4 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 39.0 ppb (37) | N/A | N/A | 5.4 μg/m3 (23) | 37.0 | |
| May 8, 2021, 6 a.m. | 1.8 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 4.8 μg/m3 (20) | 41.0 | |
| May 8, 2021, 5 a.m. | 1.8 ppb (2) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 43.0 ppb (40) | N/A | N/A | 4.5 μg/m3 (19) | 40.0 | |
| May 8, 2021, 4 a.m. | 1.6 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 41.0 ppb (38) | N/A | N/A | 4.1 μg/m3 (18) | 38.0 | |
| May 8, 2021, 3 a.m. | 1.9 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 40.0 ppb (38) | N/A | N/A | 3.3 μg/m3 (14) | 38.0 | |
| May 8, 2021, 2 a.m. | 2.3 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 40.0 ppb (38) | N/A | N/A | 3.2 μg/m3 (14) | 38.0 | |
| May 8, 2021, 1 a.m. | 1.8 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 43.0 ppb (40) | N/A | N/A | 3.5 μg/m3 (15) | 40.0 | |
| May 8, 2021, midnight | 1.6 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 3.4 μg/m3 (15) | 42.0 | |
| May 7, 2021, 11 p.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 46.0 ppb (43) | N/A | N/A | 3.6 μg/m3 (16) | 43.0 | |
| May 7, 2021, 10 p.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 46.0 ppb (43) | N/A | N/A | 3.6 μg/m3 (16) | 43.0 | |
| May 7, 2021, 9 p.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 3.4 μg/m3 (15) | 42.0 | |
| May 7, 2021, 8 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 3.5 μg/m3 (15) | 42.0 | |
| May 7, 2021, 7 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 3.8 μg/m3 (16) | 42.0 | |
| May 7, 2021, 6 p.m. | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 44.0 ppb (41) | N/A | N/A | 3.7 μg/m3 (16) | 41.0 | |
| May 7, 2021, 5 p.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 42.0 ppb (39) | N/A | N/A | 3.6 μg/m3 (16) | 39.0 | |
| May 7, 2021, 4 p.m. | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 41.0 ppb (38) | N/A | N/A | 3.3 μg/m3 (14) | 38.0 | |
| May 7, 2021, 3 p.m. | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 40.0 ppb (38) | N/A | N/A | 2.6 μg/m3 (11) | 38.0 | |
| May 7, 2021, 2 p.m. | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 40.0 ppb (38) | N/A | N/A | 1.9 μg/m3 (8) | 38.0 | |
| May 7, 2021, 1 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 39.0 ppb (37) | N/A | N/A | 2.3 μg/m3 (10) | 37.0 | |
| May 7, 2021, noon | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 37.0 ppb (35) | N/A | N/A | 2.0 μg/m3 (9) | 35.0 | |
| May 7, 2021, 11 a.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 35.0 ppb (33) | N/A | N/A | 1.9 μg/m3 (8) | 33.0 | |
| May 7, 2021, 10 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 34.0 ppb (32) | N/A | N/A | 2.1 μg/m3 (9) | 32.0 | |
| May 7, 2021, 9 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 33.0 ppb (31) | N/A | N/A | 2.9 μg/m3 (13) | 31.0 | |
| May 7, 2021, 8 a.m. | 1.8 ppb (2) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 32.0 ppb (30) | N/A | N/A | 3.9 μg/m3 (17) | 30.0 | |
| May 7, 2021, 7 a.m. | 2.2 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 28.0 ppb (26) | N/A | N/A | 5.2 μg/m3 (22) | 26.0 | |
| May 7, 2021, 6 a.m. | 2.2 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 29.0 ppb (27) | N/A | N/A | 5.2 μg/m3 (22) | 27.0 | |
| May 7, 2021, 5 a.m. | 2.6 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 32.0 ppb (30) | N/A | N/A | 5.8 μg/m3 (25) | 30.0 | |
| May 7, 2021, 4 a.m. | 2.7 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | N/A | N/A | 5.5 μg/m3 (23) | 30.0 | |
| May 7, 2021, 3 a.m. | 3.5 ppb (4) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | N/A | N/A | 5.9 μg/m3 (25) | 30.0 | |
| May 7, 2021, 2 a.m. | 2.1 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 36.0 ppb (34) | N/A | N/A | 4.6 μg/m3 (20) | 34.0 | |
| May 7, 2021, 1 a.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 40.0 ppb (38) | N/A | N/A | 4.2 μg/m3 (18) | 38.0 | |
| May 7, 2021, midnight | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 43.0 ppb (40) | N/A | N/A | 4.6 μg/m3 (20) | 40.0 | |
| May 6, 2021, 11 p.m. | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 4.5 μg/m3 (19) | 41.0 | |
| May 6, 2021, 10 p.m. | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 4.3 μg/m3 (18) | 41.0 | |
| May 6, 2021, 9 p.m. | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 4.3 μg/m3 (18) | 41.0 | |
| May 6, 2021, 8 p.m. | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 44.0 ppb (41) | N/A | N/A | 4.8 μg/m3 (20) | 41.0 | |
| May 6, 2021, 7 p.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 45.0 ppb (42) | N/A | N/A | 5.4 μg/m3 (23) | 42.0 | |
| May 6, 2021, 6 p.m. | 1.8 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 47.0 ppb (44) | N/A | N/A | 5.8 μg/m3 (25) | 44.0 | |
| May 6, 2021, 5 p.m. | 2.1 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 2.0 ppb (3) | 47.0 ppb (44) | N/A | N/A | 5.2 μg/m3 (22) | 44.0 | |
| May 6, 2021, 4 p.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 4.5 μg/m3 (19) | 42.0 | |
| May 6, 2021, 3 p.m. | 1.6 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 42.0 ppb (39) | N/A | N/A | 4.3 μg/m3 (18) | 39.0 | |
| May 6, 2021, 2 p.m. | 2.2 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 38.0 ppb (36) | N/A | N/A | 5.2 μg/m3 (22) | 36.0 | |
| May 6, 2021, 1 p.m. | 3.4 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 36.0 ppb (34) | N/A | N/A | 6.1 μg/m3 (26) | 34.0 | |
| May 6, 2021, noon | 4.2 ppb (4) | 0.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (2) | 33.0 ppb (31) | N/A | N/A | 5.8 μg/m3 (25) | 31.0 | |
| May 6, 2021, 11 a.m. | 3.6 ppb (4) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 31.0 ppb (29) | N/A | N/A | 5.6 μg/m3 (24) | 29.0 | |
| May 6, 2021, 10 a.m. | 3.3 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 32.0 ppb (30) | N/A | N/A | 5.7 μg/m3 (24) | 30.0 | |
| May 6, 2021, 9 a.m. | 2.4 ppb (3) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 33.0 ppb (31) | N/A | N/A | 5.5 μg/m3 (23) | 31.0 | |
| May 6, 2021, 8 a.m. | 1.8 ppb (2) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 33.0 ppb (31) | N/A | N/A | 5.5 μg/m3 (23) | 31.0 | |
| May 6, 2021, 7 a.m. | 1.5 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 32.0 ppb (30) | N/A | N/A | 5.1 μg/m3 (22) | 30.0 | |
| May 6, 2021, 6 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 36.0 ppb (34) | N/A | N/A | 4.9 μg/m3 (21) | 34.0 | |
| May 6, 2021, 5 a.m. | 1.0 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 37.0 ppb (35) | N/A | N/A | 4.8 μg/m3 (20) | 35.0 | |
| May 6, 2021, 4 a.m. | 1.1 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 38.0 ppb (36) | N/A | N/A | 5.0 μg/m3 (21) | 36.0 | |
| May 6, 2021, 3 a.m. | 1.5 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 40.0 ppb (38) | N/A | N/A | 5.3 μg/m3 (23) | 38.0 | |
| May 6, 2021, 2 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 40.0 ppb (38) | N/A | N/A | 5.1 μg/m3 (22) | 38.0 | |
| May 6, 2021, 1 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 45.0 ppb (42) | N/A | N/A | 5.3 μg/m3 (23) | 42.0 | |
| May 6, 2021, midnight | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 48.0 ppb (45) | N/A | N/A | 4.8 μg/m3 (20) | 45.0 | |
| May 5, 2021, 11 p.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 48.0 ppb (45) | N/A | N/A | 5.2 μg/m3 (22) | 45.0 | |
| May 5, 2021, 10 p.m. | 1.7 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 48.0 ppb (45) | N/A | N/A | 5.2 μg/m3 (22) | 45.0 | |
| May 5, 2021, 9 p.m. | 1.6 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 48.0 ppb (45) | N/A | N/A | 5.0 μg/m3 (21) | 45.0 | |
| May 5, 2021, 8 p.m. | 1.6 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 47.0 ppb (44) | N/A | N/A | 5.4 μg/m3 (23) | 44.0 | |
| May 5, 2021, 7 p.m. | 2.1 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 46.0 ppb (43) | N/A | N/A | 6.9 μg/m3 (29) | 43.0 | |
| May 5, 2021, 6 p.m. | 2.7 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 2.0 ppb (3) | 43.0 ppb (40) | N/A | N/A | 8.4 μg/m3 (36) | 40.0 | |
| May 5, 2021, 5 p.m. | 3.3 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (2) | 36.0 ppb (34) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 5, 2021, 4 p.m. | 2.4 ppb (3) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 42.0 ppb (39) | N/A | N/A | 6.8 μg/m3 (29) | 39.0 | |
| May 5, 2021, 3 p.m. | 2.9 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 40.0 ppb (38) | N/A | N/A | 6.3 μg/m3 (27) | 38.0 | |
| May 5, 2021, 2 p.m. | 2.8 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 36.0 ppb (34) | N/A | N/A | 6.3 μg/m3 (27) | 34.0 | |
| May 5, 2021, 1 p.m. | 2.9 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 31.0 ppb (29) | N/A | N/A | 6.9 μg/m3 (29) | 29.0 | |
| May 5, 2021, noon | 2.1 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 26.0 ppb (25) | N/A | N/A | 6.5 μg/m3 (28) | 28.0 | |
| May 5, 2021, 11 a.m. | 1.7 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 23.0 ppb (22) | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| May 5, 2021, 10 a.m. | 1.7 ppb (2) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 23.0 ppb (22) | N/A | N/A | 5.5 μg/m3 (23) | 23.0 | |
| May 5, 2021, 9 a.m. | 1.6 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 24.0 ppb (23) | N/A | N/A | 5.0 μg/m3 (21) | 23.0 | |
| May 5, 2021, 8 a.m. | 1.6 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 25.0 ppb (24) | N/A | N/A | 4.9 μg/m3 (21) | 24.0 | |
| May 5, 2021, 7 a.m. | 1.8 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 24.0 ppb (23) | N/A | N/A | 5.0 μg/m3 (21) | 23.0 | |
| May 5, 2021, 6 a.m. | 2.1 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 24.0 ppb (23) | N/A | N/A | 5.0 μg/m3 (21) | 23.0 | |
| May 5, 2021, 5 a.m. | 2.0 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 26.0 ppb (25) | N/A | N/A | 4.5 μg/m3 (19) | 25.0 | |
| May 5, 2021, 4 a.m. | 2.0 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | N/A | N/A | 4.4 μg/m3 (19) | 30.0 | |
| May 5, 2021, 3 a.m. | 2.5 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 33.0 ppb (31) | N/A | N/A | 4.5 μg/m3 (19) | 31.0 | |
| May 5, 2021, 2 a.m. | 2.1 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 35.0 ppb (33) | N/A | N/A | 4.7 μg/m3 (20) | 33.0 | |
| May 5, 2021, 1 a.m. | 2.2 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 37.0 ppb (35) | N/A | N/A | 5.1 μg/m3 (22) | 35.0 | |
| May 5, 2021, midnight | 1.9 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 42.0 ppb (39) | N/A | N/A | 5.1 μg/m3 (22) | 39.0 | |
| May 4, 2021, 11 p.m. | 1.9 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 42.0 ppb (39) | N/A | N/A | 5.2 μg/m3 (22) | 39.0 | |
| May 4, 2021, 10 p.m. | 2.0 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 43.0 ppb (40) | N/A | N/A | 5.3 μg/m3 (23) | 40.0 | |
| May 4, 2021, 9 p.m. | 2.0 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 43.0 ppb (40) | N/A | N/A | 5.6 μg/m3 (24) | 40.0 | |
| May 4, 2021, 8 p.m. | 2.0 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 42.0 ppb (39) | N/A | N/A | 5.8 μg/m3 (25) | 39.0 | |
| May 4, 2021, 7 p.m. | 1.9 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 41.0 ppb (38) | N/A | N/A | 5.4 μg/m3 (23) | 38.0 | |
| May 4, 2021, 6 p.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 42.0 ppb (39) | N/A | N/A | 4.5 μg/m3 (19) | 39.0 | |
| May 4, 2021, 5 p.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 41.0 ppb (38) | N/A | N/A | 4.5 μg/m3 (19) | 38.0 | |
| May 4, 2021, 4 p.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 39.0 ppb (37) | N/A | N/A | 4.2 μg/m3 (18) | 37.0 | |
| May 4, 2021, 3 p.m. | 1.6 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 36.0 ppb (34) | N/A | N/A | 4.0 μg/m3 (17) | 34.0 | |
| May 4, 2021, 2 p.m. | 1.7 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 33.0 ppb (31) | N/A | N/A | 3.7 μg/m3 (16) | 31.0 | |
| May 4, 2021, 1 p.m. | 1.8 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 29.0 ppb (27) | N/A | N/A | 3.9 μg/m3 (17) | 27.0 | |
| May 4, 2021, noon | 2.0 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 25.0 ppb (24) | N/A | N/A | 5.3 μg/m3 (23) | 24.0 | |
| May 4, 2021, 11 a.m. | 1.8 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 26.0 ppb (25) | N/A | N/A | 4.6 μg/m3 (20) | 25.0 | |
| May 4, 2021, 10 a.m. | 1.3 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 27.0 ppb (25) | N/A | N/A | 4.0 μg/m3 (17) | 25.0 | |
| May 4, 2021, 9 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 26.0 ppb (25) | N/A | N/A | 4.1 μg/m3 (18) | 25.0 | |
| May 4, 2021, 8 a.m. | 1.6 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 27.0 ppb (25) | N/A | N/A | 4.8 μg/m3 (20) | 25.0 | |
| May 4, 2021, 7 a.m. | 1.8 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 26.0 ppb (25) | N/A | N/A | 8.4 μg/m3 (36) | 36.0 | |
| May 4, 2021, 6 a.m. | 2.0 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 24.0 ppb (23) | N/A | N/A | 10.5 μg/m3 (44) | 44.0 | |
| May 4, 2021, 5 a.m. | 1.9 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 26.0 ppb (25) | N/A | N/A | 3.5 μg/m3 (15) | 25.0 | |
| May 4, 2021, 4 a.m. | 2.2 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 29.0 ppb (27) | N/A | N/A | 3.5 μg/m3 (15) | 27.0 | |
| May 4, 2021, 3 a.m. | 2.0 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (2) | 30.0 ppb (28) | N/A | N/A | 3.6 μg/m3 (16) | 28.0 | |
| May 4, 2021, 2 a.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 32.0 ppb (30) | N/A | N/A | 3.4 μg/m3 (15) | 30.0 | |
| May 4, 2021, 1 a.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 37.0 ppb (35) | N/A | N/A | 4.0 μg/m3 (17) | 35.0 | |
| May 4, 2021, midnight | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 38.0 ppb (36) | N/A | N/A | 4.6 μg/m3 (20) | 36.0 | |
| May 3, 2021, 11 p.m. | 1.4 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (2) | 38.0 ppb (36) | N/A | N/A | 5.3 μg/m3 (23) | 36.0 |