Sweetwater Co WY, US: 41.750599, -109.789703
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 23, 2019, 2 p.m. | 1.7 ppb (2) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 39.0 ppb (30) | N/A | 0.0 μg/m3 (0) | N/A | 30.0 | |
| March 23, 2019, 1 p.m. | 1.5 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 35.0 ppb (27) | N/A | 2.0 μg/m3 (2) | N/A | 27.0 | |
| March 23, 2019, noon | 1.9 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | N/A | 2.0 μg/m3 (2) | N/A | 35.0 | |
| March 23, 2019, 11 a.m. | 1.9 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | N/A | 1.0 μg/m3 (1) | N/A | 35.0 | |
| March 23, 2019, 10 a.m. | 2.4 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 44.0 ppb (34) | N/A | 2.0 μg/m3 (2) | N/A | 34.0 | |
| March 23, 2019, 9 a.m. | 2.5 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 44.0 ppb (34) | N/A | 3.0 μg/m3 (3) | N/A | 34.0 | |
| March 23, 2019, 8 a.m. | 2.4 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | N/A | 2.0 μg/m3 (2) | N/A | 35.0 | |
| March 23, 2019, 7 a.m. | 2.1 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | N/A | 4.0 μg/m3 (4) | N/A | 36.0 | |
| March 23, 2019, 6 a.m. | 2.6 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | N/A | 4.0 μg/m3 (4) | N/A | 41.0 | |
| March 23, 2019, 5 a.m. | 2.3 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 60.0 ppb (46) | N/A | 3.0 μg/m3 (3) | N/A | 46.0 | |
| March 23, 2019, 4 a.m. | 2.5 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 63.0 ppb (48) | N/A | 1.0 μg/m3 (1) | N/A | 48.0 | |
| March 23, 2019, 3 a.m. | 6.1 ppb (6) | 0.3 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | N/A | 3.0 μg/m3 (3) | N/A | 45.0 | |
| March 23, 2019, 2 a.m. | 6.8 ppb (6) | 0.6 ppb (1) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 57.0 ppb (44) | N/A | 4.0 μg/m3 (4) | N/A | 44.0 | |
| March 23, 2019, 1 a.m. | 3.7 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 62.0 ppb (48) | N/A | 4.0 μg/m3 (4) | N/A | 48.0 | |
| March 23, 2019, midnight | 2.4 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 67.0 ppb (52) | N/A | 7.0 μg/m3 (6) | N/A | 52.0 | |
| March 22, 2019, 11 p.m. | 2.5 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 69.0 ppb (53) | N/A | 11.0 μg/m3 (10) | N/A | 53.0 | |
| March 22, 2019, 10 p.m. | 2.5 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 67.0 ppb (52) | N/A | 11.0 μg/m3 (10) | N/A | 52.0 | |
| March 22, 2019, 9 p.m. | 2.2 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 67.0 ppb (52) | N/A | 10.0 μg/m3 (9) | N/A | 52.0 | |
| March 22, 2019, 8 p.m. | 3.5 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 65.0 ppb (50) | N/A | 8.0 μg/m3 (7) | N/A | 50.0 | |
| March 22, 2019, 7 p.m. | 4.3 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | 62.0 ppb (48) | N/A | 10.0 μg/m3 (9) | N/A | 48.0 | |
| March 22, 2019, 6 p.m. | 5.8 ppb (5) | 0.8 ppb (1) | N/A | 5.0 ppb (5) | N/A | 2.0 ppb (3) | 60.0 ppb (46) | N/A | 12.0 μg/m3 (11) | N/A | 46.0 | |
| March 22, 2019, 5 p.m. | 5.6 ppb (5) | 1.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | 52.0 ppb (40) | N/A | 5.0 μg/m3 (5) | N/A | 40.0 | |
| March 22, 2019, 4 p.m. | 6.5 ppb (6) | 2.3 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | N/A | 5.0 μg/m3 (5) | N/A | 36.0 | |
| March 22, 2019, 3 p.m. | 5.8 ppb (5) | 1.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 43.0 ppb (33) | N/A | 6.0 μg/m3 (5) | N/A | 33.0 | |
| March 22, 2019, 2 p.m. | 4.0 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | N/A | 5.0 μg/m3 (5) | N/A | 35.0 | |
| March 22, 2019, 1 p.m. | 3.5 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | N/A | 5.0 μg/m3 (5) | N/A | 35.0 | |
| March 22, 2019, noon | 5.0 ppb (5) | 0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | N/A | 3.0 μg/m3 (3) | N/A | 37.0 | |
| March 22, 2019, 11 a.m. | 4.6 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | N/A | 5.0 μg/m3 (5) | N/A | 38.0 | |
| March 22, 2019, 10 a.m. | 2.3 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | N/A | 3.0 μg/m3 (3) | N/A | 38.0 | |
| March 22, 2019, 9 a.m. | 1.7 ppb (2) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | N/A | -1.0 μg/m3 (0) | N/A | 41.0 | |
| March 22, 2019, 8 a.m. | 1.5 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 56.0 ppb (43) | N/A | 1.0 μg/m3 (1) | N/A | 43.0 | |
| March 22, 2019, 7 a.m. | 1.4 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 56.0 ppb (43) | N/A | 5.0 μg/m3 (5) | N/A | 43.0 | |
| March 22, 2019, 6 a.m. | 2.1 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 52.0 ppb (40) | N/A | 4.0 μg/m3 (4) | N/A | 40.0 | |
| March 22, 2019, 5 a.m. | 4.0 ppb (4) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 46.0 ppb (35) | N/A | 4.0 μg/m3 (4) | N/A | 35.0 | |
| March 22, 2019, 4 a.m. | 6.0 ppb (6) | 0.2 ppb (0) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | 44.0 ppb (34) | N/A | 9.0 μg/m3 (8) | N/A | 34.0 | |
| March 22, 2019, 3 a.m. | 3.0 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | N/A | 12.0 μg/m3 (11) | N/A | 37.0 | |
| March 22, 2019, 2 a.m. | 3.7 ppb (3) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | 48.0 ppb (37) | N/A | 9.0 μg/m3 (8) | N/A | 37.0 | |
| March 22, 2019, 1 a.m. | 3.4 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 53.0 ppb (41) | N/A | 5.0 μg/m3 (5) | N/A | 41.0 | |
| March 22, 2019, midnight | 2.5 ppb (2) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 62.0 ppb (48) | N/A | 5.0 μg/m3 (5) | N/A | 48.0 | |
| March 21, 2019, 11 p.m. | 1.8 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 60.0 ppb (46) | N/A | 5.0 μg/m3 (5) | N/A | 46.0 | |
| March 21, 2019, 10 p.m. | 1.7 ppb (2) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | 60.0 ppb (46) | N/A | 2.0 μg/m3 (2) | N/A | 46.0 | |
| March 21, 2019, 9 p.m. | 2.0 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 62.0 ppb (48) | N/A | 2.0 μg/m3 (2) | N/A | 48.0 | |
| March 21, 2019, 8 p.m. | 1.5 ppb (1) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 62.0 ppb (48) | N/A | 5.0 μg/m3 (5) | N/A | 48.0 | |
| March 21, 2019, 7 p.m. | 1.7 ppb (2) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 60.0 ppb (46) | N/A | 4.0 μg/m3 (4) | N/A | 46.0 | |
| March 21, 2019, 6 p.m. | 2.2 ppb (2) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 58.0 ppb (45) | N/A | 3.0 μg/m3 (3) | N/A | 45.0 | |
| March 21, 2019, 5 p.m. | 2.4 ppb (2) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 54.0 ppb (42) | N/A | 5.0 μg/m3 (5) | N/A | 42.0 | |
| March 21, 2019, 4 p.m. | 1.9 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | N/A | 4.0 μg/m3 (4) | N/A | 38.0 | |
| March 21, 2019, 3 p.m. | 2.3 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | N/A | 3.0 μg/m3 (3) | N/A | 39.0 | |
| March 21, 2019, 2 p.m. | 2.0 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | N/A | 0.0 μg/m3 (0) | N/A | 38.0 | |
| March 21, 2019, 1 p.m. | 1.6 ppb (1) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | N/A | 5.0 μg/m3 (5) | N/A | 38.0 | |
| March 21, 2019, noon | 2.0 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | N/A | 6.0 μg/m3 (5) | N/A | 37.0 | |
| March 21, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | N/A | 5.0 | |
| March 21, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | N/A | 3.0 | |
| March 21, 2019, 9 a.m. | 1.8 ppb (2) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | N/A | 1.0 μg/m3 (1) | N/A | 41.0 | |
| March 21, 2019, 8 a.m. | 1.8 ppb (2) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | N/A | 0.0 μg/m3 (0) | N/A | 41.0 | |
| March 21, 2019, 7 a.m. | 1.6 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 55.0 ppb (42) | N/A | 1.0 μg/m3 (1) | N/A | 42.0 | |
| March 21, 2019, 6 a.m. | 2.0 ppb (2) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 56.0 ppb (43) | N/A | 2.0 μg/m3 (2) | N/A | 43.0 | |
| March 21, 2019, 5 a.m. | 1.8 ppb (2) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | N/A | 3.0 μg/m3 (3) | N/A | 45.0 | |
| March 21, 2019, 4 a.m. | 1.7 ppb (2) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | N/A | 3.0 μg/m3 (3) | N/A | 45.0 | |
| March 21, 2019, 3 a.m. | 1.8 ppb (2) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 58.0 ppb (45) | N/A | 2.0 μg/m3 (2) | N/A | 45.0 | |
| March 21, 2019, 2 a.m. | 1.7 ppb (2) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | N/A | 4.0 μg/m3 (4) | N/A | 45.0 | |
| March 21, 2019, 1 a.m. | 1.6 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 61.0 ppb (47) | N/A | 6.0 μg/m3 (5) | N/A | 47.0 | |
| March 21, 2019, midnight | 1.8 ppb (2) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 62.0 ppb (48) | N/A | 2.0 μg/m3 (2) | N/A | 48.0 | |
| March 20, 2019, 11 p.m. | 1.8 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 65.0 ppb (50) | N/A | 5.0 μg/m3 (5) | N/A | 50.0 | |
| March 20, 2019, 10 p.m. | 2.8 ppb (3) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 74.0 ppb (57) | N/A | 8.0 μg/m3 (7) | N/A | 57.0 | |
| March 20, 2019, 9 p.m. | 2.6 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 70.0 ppb (54) | N/A | 6.0 μg/m3 (5) | N/A | 54.0 | |
| March 20, 2019, 8 p.m. | 2.4 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 66.0 ppb (51) | N/A | 7.0 μg/m3 (6) | N/A | 51.0 | |
| March 20, 2019, 7 p.m. | 2.8 ppb (3) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 64.0 ppb (49) | N/A | 3.0 μg/m3 (3) | N/A | 49.0 | |
| March 20, 2019, 6 p.m. | 3.0 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 60.0 ppb (46) | N/A | 5.0 μg/m3 (5) | N/A | 46.0 | |
| March 20, 2019, 5 p.m. | 3.3 ppb (3) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 56.0 ppb (43) | N/A | 3.0 μg/m3 (3) | N/A | 43.0 | |
| March 20, 2019, 4 p.m. | 3.3 ppb (3) | 1.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 53.0 ppb (41) | N/A | 4.0 μg/m3 (4) | N/A | 41.0 | |
| March 20, 2019, 3 p.m. | 3.4 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | N/A | 5.0 μg/m3 (5) | N/A | 39.0 | |
| March 20, 2019, 2 p.m. | 2.5 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | N/A | 6.0 μg/m3 (5) | N/A | 38.0 | |
| March 20, 2019, 1 p.m. | 1.7 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | N/A | 6.0 μg/m3 (5) | N/A | 37.0 | |
| March 20, 2019, noon | 2.4 ppb (2) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | N/A | 4.0 μg/m3 (4) | N/A | 36.0 | |
| March 20, 2019, 11 a.m. | 1.9 ppb (2) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 46.0 ppb (35) | N/A | 4.0 μg/m3 (4) | N/A | 35.0 | |
| March 20, 2019, 10 a.m. | 1.7 ppb (2) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | N/A | 5.0 μg/m3 (5) | N/A | 38.0 | |
| March 20, 2019, 9 a.m. | 2.2 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | N/A | 5.0 μg/m3 (5) | N/A | 39.0 | |
| March 20, 2019, 8 a.m. | 1.7 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | N/A | 3.0 μg/m3 (3) | N/A | 38.0 | |
| March 20, 2019, 7 a.m. | 2.0 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | N/A | 4.0 μg/m3 (4) | N/A | 38.0 | |
| March 20, 2019, 6 a.m. | 1.9 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | N/A | 5.0 μg/m3 (5) | N/A | 39.0 | |
| March 20, 2019, 5 a.m. | 2.3 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 56.0 ppb (43) | N/A | 8.0 μg/m3 (7) | N/A | 43.0 | |
| March 20, 2019, 4 a.m. | 3.0 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 62.0 ppb (48) | N/A | 9.0 μg/m3 (8) | N/A | 48.0 | |
| March 20, 2019, 3 a.m. | 3.2 ppb (3) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 63.0 ppb (48) | N/A | 10.0 μg/m3 (9) | N/A | 48.0 | |
| March 20, 2019, 2 a.m. | 2.5 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 61.0 ppb (47) | N/A | 10.0 μg/m3 (9) | N/A | 47.0 | |
| March 20, 2019, 1 a.m. | 2.3 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 60.0 ppb (46) | N/A | 5.0 μg/m3 (5) | N/A | 46.0 | |
| March 20, 2019, midnight | 2.6 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 64.0 ppb (49) | N/A | 5.0 μg/m3 (5) | N/A | 49.0 | |
| March 19, 2019, 11 p.m. | 2.3 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 62.0 ppb (48) | N/A | 6.0 μg/m3 (5) | N/A | 48.0 | |
| March 19, 2019, 10 p.m. | 2.9 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 61.0 ppb (47) | N/A | 6.0 μg/m3 (5) | N/A | 47.0 | |
| March 19, 2019, 9 p.m. | 3.3 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 63.0 ppb (48) | N/A | 5.0 μg/m3 (5) | N/A | 48.0 | |
| March 19, 2019, 8 p.m. | 3.4 ppb (3) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 62.0 ppb (48) | N/A | 7.0 μg/m3 (6) | N/A | 48.0 | |
| March 19, 2019, 7 p.m. | 3.5 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 58.0 ppb (45) | N/A | 4.0 μg/m3 (4) | N/A | 45.0 | |
| March 19, 2019, 6 p.m. | 3.3 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 57.0 ppb (44) | N/A | 6.0 μg/m3 (5) | N/A | 44.0 | |
| March 19, 2019, 5 p.m. | 2.8 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 55.0 ppb (42) | N/A | 6.0 μg/m3 (5) | N/A | 42.0 | |
| March 19, 2019, 4 p.m. | 3.4 ppb (3) | 0.9 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | N/A | 2.0 μg/m3 (2) | N/A | 41.0 | |
| March 19, 2019, 3 p.m. | 2.8 ppb (3) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | N/A | 2.0 μg/m3 (2) | N/A | 38.0 | |
| March 19, 2019, 2 p.m. | 2.7 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 52.0 ppb (40) | N/A | 1.0 μg/m3 (1) | N/A | 40.0 | |
| March 19, 2019, 1 p.m. | 3.1 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | N/A | 4.0 μg/m3 (4) | N/A | 39.0 | |
| March 19, 2019, noon | 2.5 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 56.0 ppb (43) | N/A | 4.0 μg/m3 (4) | N/A | 43.0 | |
| March 19, 2019, 11 a.m. | 2.2 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | N/A | 5.0 μg/m3 (5) | N/A | 41.0 | |
| March 19, 2019, 10 a.m. | 2.3 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 55.0 ppb (42) | N/A | 4.0 μg/m3 (4) | N/A | 42.0 | |
| March 19, 2019, 9 a.m. | 2.9 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | N/A | 3.0 μg/m3 (3) | N/A | 45.0 | |
| March 19, 2019, 8 a.m. | 2.7 ppb (3) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | N/A | 3.0 μg/m3 (3) | N/A | 45.0 | |
| March 19, 2019, 7 a.m. | 3.2 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 56.0 ppb (43) | N/A | 6.0 μg/m3 (5) | N/A | 43.0 | |
| March 19, 2019, 6 a.m. | 3.9 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | N/A | 11.0 μg/m3 (10) | N/A | 45.0 | |
| March 19, 2019, 5 a.m. | 6.2 ppb (6) | 0.5 ppb (0) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | 70.0 ppb (54) | N/A | 24.0 μg/m3 (22) | N/A | 54.0 | |
| March 19, 2019, 4 a.m. | 8.3 ppb (8) | 0.3 ppb (0) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | 76.0 ppb (59) | N/A | 21.0 μg/m3 (19) | N/A | 59.0 | |
| March 19, 2019, 3 a.m. | 11.0 ppb (10) | 0.3 ppb (0) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | 68.0 ppb (52) | N/A | 25.0 μg/m3 (23) | N/A | 52.0 | |
| March 19, 2019, 2 a.m. | 18.9 ppb (18) | 0.7 ppb (1) | N/A | 18.0 ppb (17) | N/A | 1.0 ppb (1) | 50.0 ppb (38) | N/A | 18.0 μg/m3 (16) | N/A | 38.0 | |
| March 19, 2019, 1 a.m. | 22.7 ppb (21) | 4.5 ppb (4) | N/A | 18.0 ppb (17) | N/A | 2.0 ppb (3) | 51.0 ppb (39) | N/A | 24.0 μg/m3 (22) | N/A | 39.0 | |
| March 19, 2019, midnight | 21.9 ppb (20) | 7.3 ppb (7) | N/A | 15.0 ppb (14) | N/A | 2.0 ppb (3) | 59.0 ppb (45) | N/A | 26.0 μg/m3 (24) | N/A | 45.0 | |
| March 18, 2019, 11 p.m. | 3.7 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 73.0 ppb (57) | N/A | 11.0 μg/m3 (10) | N/A | 57.0 | |
| March 18, 2019, 10 p.m. | 4.4 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 72.0 ppb (56) | N/A | 7.0 μg/m3 (6) | N/A | 56.0 | |
| March 18, 2019, 9 p.m. | 10.2 ppb (9) | 3.3 ppb (3) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | 69.0 ppb (53) | N/A | 26.0 μg/m3 (24) | N/A | 53.0 | |
| March 18, 2019, 8 p.m. | 3.6 ppb (3) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 66.0 ppb (51) | N/A | 7.0 μg/m3 (6) | N/A | 51.0 | |
| March 18, 2019, 7 p.m. | 3.3 ppb (3) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 61.0 ppb (47) | N/A | 4.0 μg/m3 (4) | N/A | 47.0 | |
| March 18, 2019, 6 p.m. | 3.5 ppb (3) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 56.0 ppb (43) | N/A | 5.0 μg/m3 (5) | N/A | 43.0 | |
| March 18, 2019, 5 p.m. | 3.9 ppb (4) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 51.0 ppb (39) | N/A | 6.0 μg/m3 (5) | N/A | 39.0 | |
| March 18, 2019, 4 p.m. | 4.8 ppb (4) | 1.3 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | 48.0 ppb (37) | N/A | 7.0 μg/m3 (6) | N/A | 37.0 | |
| March 18, 2019, 3 p.m. | 3.4 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 46.0 ppb (35) | N/A | 7.0 μg/m3 (6) | N/A | 35.0 | |
| March 18, 2019, 2 p.m. | 2.6 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 52.0 ppb (40) | N/A | 14.0 μg/m3 (13) | N/A | 40.0 | |
| March 18, 2019, 1 p.m. | 2.2 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | N/A | 6.0 μg/m3 (5) | N/A | 41.0 | |
| March 18, 2019, noon | 2.1 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | 57.0 ppb (44) | N/A | 4.0 μg/m3 (4) | N/A | 44.0 | |
| March 18, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | N/A | 4.0 | |
| March 18, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | N/A | 3.0 | |
| March 18, 2019, 9 a.m. | 2.5 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 58.0 ppb (45) | N/A | 4.0 μg/m3 (4) | N/A | 45.0 | |
| March 18, 2019, 8 a.m. | 2.3 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 54.0 ppb (42) | N/A | 4.0 μg/m3 (4) | N/A | 42.0 | |
| March 18, 2019, 7 a.m. | 2.3 ppb (2) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 55.0 ppb (42) | N/A | 3.0 μg/m3 (3) | N/A | 42.0 | |
| March 18, 2019, 6 a.m. | 2.6 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 63.0 ppb (48) | N/A | 7.0 μg/m3 (6) | N/A | 48.0 | |
| March 18, 2019, 5 a.m. | 2.7 ppb (3) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 64.0 ppb (49) | N/A | 8.0 μg/m3 (7) | N/A | 49.0 | |
| March 18, 2019, 4 a.m. | 3.2 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 67.0 ppb (52) | N/A | 10.0 μg/m3 (9) | N/A | 52.0 | |
| March 18, 2019, 3 a.m. | 3.4 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 78.0 ppb (61) | N/A | 13.0 μg/m3 (12) | N/A | 61.0 | |
| March 18, 2019, 2 a.m. | 3.8 ppb (4) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 74.0 ppb (57) | N/A | 10.0 μg/m3 (9) | N/A | 57.0 | |
| March 18, 2019, 1 a.m. | 3.0 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 75.0 ppb (58) | N/A | 10.0 μg/m3 (9) | N/A | 58.0 | |
| March 18, 2019, midnight | 3.9 ppb (4) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 79.0 ppb (62) | N/A | 15.0 μg/m3 (14) | N/A | 62.0 | |
| March 17, 2019, 11 p.m. | 4.6 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | 2.0 ppb (3) | 83.0 ppb (65) | N/A | 16.0 μg/m3 (15) | N/A | 65.0 | |
| March 17, 2019, 10 p.m. | 4.6 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 2.0 ppb (3) | 83.0 ppb (65) | N/A | 20.0 μg/m3 (18) | N/A | 65.0 | |
| March 17, 2019, 9 p.m. | 4.6 ppb (4) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | 2.0 ppb (3) | 83.0 ppb (65) | N/A | 21.0 μg/m3 (19) | N/A | 65.0 | |
| March 17, 2019, 8 p.m. | 4.1 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 2.0 ppb (3) | 76.0 ppb (59) | N/A | 23.0 μg/m3 (21) | N/A | 59.0 | |
| March 17, 2019, 7 p.m. | 3.0 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 67.0 ppb (52) | N/A | 5.0 μg/m3 (5) | N/A | 52.0 | |
| March 17, 2019, 6 p.m. | 3.0 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 63.0 ppb (48) | N/A | 6.0 μg/m3 (5) | N/A | 48.0 | |
| March 17, 2019, 5 p.m. | 2.5 ppb (2) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 58.0 ppb (45) | N/A | 4.0 μg/m3 (4) | N/A | 45.0 | |
| March 17, 2019, 4 p.m. | 2.7 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 57.0 ppb (44) | N/A | 3.0 μg/m3 (3) | N/A | 44.0 | |
| March 17, 2019, 3 p.m. | 2.5 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 52.0 ppb (40) | N/A | 4.0 μg/m3 (4) | N/A | 40.0 | |
| March 17, 2019, 2 p.m. | 2.3 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | N/A | 4.0 μg/m3 (4) | N/A | 41.0 | |
| March 17, 2019, 1 p.m. | 2.5 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 52.0 ppb (40) | N/A | 3.0 μg/m3 (3) | N/A | 40.0 | |
| March 17, 2019, noon | 2.5 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 55.0 ppb (42) | N/A | 4.0 μg/m3 (4) | N/A | 42.0 | |
| March 17, 2019, 11 a.m. | 2.0 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 55.0 ppb (42) | N/A | 5.0 μg/m3 (5) | N/A | 42.0 | |
| March 17, 2019, 10 a.m. | 2.2 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 56.0 ppb (43) | N/A | 5.0 μg/m3 (5) | N/A | 43.0 | |
| March 17, 2019, 9 a.m. | 2.1 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 56.0 ppb (43) | N/A | 8.0 μg/m3 (7) | N/A | 43.0 | |
| March 17, 2019, 8 a.m. | 2.3 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 62.0 ppb (48) | N/A | 9.0 μg/m3 (8) | N/A | 48.0 | |
| March 17, 2019, 7 a.m. | 2.4 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 64.0 ppb (49) | N/A | 4.0 μg/m3 (4) | N/A | 49.0 | |
| March 17, 2019, 6 a.m. | 2.6 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 64.0 ppb (49) | N/A | 5.0 μg/m3 (5) | N/A | 49.0 | |
| March 17, 2019, 5 a.m. | 2.6 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 65.0 ppb (50) | N/A | 6.0 μg/m3 (5) | N/A | 50.0 | |
| March 17, 2019, 4 a.m. | 3.2 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 66.0 ppb (51) | N/A | 3.0 μg/m3 (3) | N/A | 51.0 | |
| March 17, 2019, 3 a.m. | 5.5 ppb (5) | 0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 70.0 ppb (54) | N/A | 15.0 μg/m3 (14) | N/A | 54.0 | |
| March 17, 2019, 2 a.m. | 7.0 ppb (6) | 0.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | 75.0 ppb (58) | N/A | 6.0 μg/m3 (5) | N/A | 58.0 | |
| March 17, 2019, 1 a.m. | 4.5 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 78.0 ppb (61) | N/A | 8.0 μg/m3 (7) | N/A | 61.0 | |
| March 17, 2019, midnight | 10.8 ppb (10) | 2.9 ppb (3) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | 72.0 ppb (56) | N/A | 8.0 μg/m3 (7) | N/A | 56.0 | |
| March 16, 2019, 11 p.m. | 8.1 ppb (8) | 2.3 ppb (2) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | 71.0 ppb (55) | N/A | 9.0 μg/m3 (8) | N/A | 55.0 | |
| March 16, 2019, 10 p.m. | 12.6 ppb (12) | 5.1 ppb (5) | N/A | 7.0 ppb (6) | N/A | 2.0 ppb (3) | 63.0 ppb (48) | N/A | 6.0 μg/m3 (5) | N/A | 48.0 | |
| March 16, 2019, 9 p.m. | 9.9 ppb (9) | 3.6 ppb (3) | N/A | 6.0 ppb (6) | N/A | 2.0 ppb (3) | 59.0 ppb (45) | N/A | 10.0 μg/m3 (9) | N/A | 45.0 | |
| March 16, 2019, 8 p.m. | 6.9 ppb (6) | 1.7 ppb (2) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | 57.0 ppb (44) | N/A | 14.0 μg/m3 (13) | N/A | 44.0 | |
| March 16, 2019, 7 p.m. | 7.0 ppb (6) | 2.3 ppb (2) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | 53.0 ppb (41) | N/A | 8.0 μg/m3 (7) | N/A | 41.0 | |
| March 16, 2019, 6 p.m. | 5.1 ppb (5) | 1.9 ppb (2) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 50.0 ppb (38) | N/A | 8.0 μg/m3 (7) | N/A | 38.0 | |
| March 16, 2019, 5 p.m. | 3.3 ppb (3) | 1.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 48.0 ppb (37) | N/A | 6.0 μg/m3 (5) | N/A | 37.0 | |
| March 16, 2019, 4 p.m. | 2.7 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | N/A | 3.0 μg/m3 (3) | N/A | 38.0 | |
| March 16, 2019, 3 p.m. | 3.1 ppb (3) | 1.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | N/A | 4.0 μg/m3 (4) | N/A | 37.0 |