Hurricane UT, US: 37.179, -113.3052
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 22, 2019, 6 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 1.4 μg/m3 (6) | 28.0 | |
| March 22, 2019, 5 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 1.6 μg/m3 (7) | 29.0 | |
| March 22, 2019, 4 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 1.5 μg/m3 (6) | 35.0 | |
| March 22, 2019, 3 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 1.2 μg/m3 (5) | 35.0 | |
| March 22, 2019, 2 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 1.2 μg/m3 (5) | 37.0 | |
| March 22, 2019, 1 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 1.3 μg/m3 (5) | 40.0 | |
| March 22, 2019, midnight | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 2.0 μg/m3 (8) | 38.0 | |
| March 21, 2019, 11 p.m. | 5.0 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 2.5 μg/m3 (10) | 37.0 | |
| March 21, 2019, 10 p.m. | 2.0 ppb (2) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 1.3 μg/m3 (5) | 39.0 | |
| March 21, 2019, 9 p.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 1.6 μg/m3 (7) | 36.0 | |
| March 21, 2019, 8 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 1.8 μg/m3 (8) | 36.0 | |
| March 21, 2019, 7 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 2.5 μg/m3 (10) | 38.0 | |
| March 21, 2019, 6 p.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 2.9 μg/m3 (12) | 37.0 | |
| March 21, 2019, 5 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 2.6 μg/m3 (11) | 37.0 | |
| March 21, 2019, 4 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 1.5 μg/m3 (6) | 39.0 | |
| March 21, 2019, 3 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 2.0 μg/m3 (8) | 38.0 | |
| March 21, 2019, 2 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 2.3 μg/m3 (10) | 38.0 | |
| March 21, 2019, 1 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 1.9 μg/m3 (8) | 35.0 | |
| March 21, 2019, noon | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 2.6 μg/m3 (11) | 36.0 | |
| March 21, 2019, 11 a.m. | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | N/A | 3.1 μg/m3 (13) | 32.0 | |
| March 21, 2019, 10 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (32) | N/A | N/A | 2.4 μg/m3 (10) | 32.0 | |
| March 21, 2019, 9 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 2.8 μg/m3 (12) | 28.0 | |
| March 21, 2019, 8 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 2.9 μg/m3 (12) | 27.0 | |
| March 21, 2019, 7 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 2.0 μg/m3 (8) | 31.0 | |
| March 21, 2019, 6 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 1.7 μg/m3 (7) | 32.0 | |
| March 21, 2019, 5 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 1.3 μg/m3 (5) | 35.0 | |
| March 21, 2019, 4 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 1.7 μg/m3 (7) | 35.0 | |
| March 21, 2019, 3 a.m. | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 2.0 μg/m3 (8) | 35.0 | |
| March 21, 2019, 2 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 1.8 μg/m3 (8) | 35.0 | |
| March 21, 2019, 1 a.m. | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 2.3 μg/m3 (10) | 36.0 | |
| March 21, 2019, midnight | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 1.8 μg/m3 (8) | 38.0 | |
| March 20, 2019, 11 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 1.7 μg/m3 (7) | 38.0 | |
| March 20, 2019, 10 p.m. | 6.0 ppb (6) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 1.8 μg/m3 (8) | 36.0 | |
| March 20, 2019, 9 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 1.8 μg/m3 (8) | 38.0 | |
| March 20, 2019, 8 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 2.0 μg/m3 (8) | 38.0 | |
| March 20, 2019, 7 p.m. | 7.0 ppb (6) | 4.0 ppb (4) | N/A | 3.0 ppb (3) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 2.2 μg/m3 (9) | 38.0 | |
| March 20, 2019, 6 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 1.8 μg/m3 (8) | 40.0 | |
| March 20, 2019, 5 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 1.9 μg/m3 (8) | 39.0 | |
| March 20, 2019, 4 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 2.4 μg/m3 (10) | 39.0 | |
| March 20, 2019, 3 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 2.8 μg/m3 (12) | 38.0 | |
| March 20, 2019, 2 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 2.8 μg/m3 (12) | 38.0 | |
| March 20, 2019, 1 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 1.9 μg/m3 (8) | 38.0 | |
| March 20, 2019, noon | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 1.9 μg/m3 (8) | 38.0 | |
| March 20, 2019, 11 a.m. | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 2.5 μg/m3 (10) | 38.0 | |
| March 20, 2019, 10 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 2.2 μg/m3 (9) | 38.0 | |
| March 20, 2019, 9 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 2.3 μg/m3 (10) | 38.0 | |
| March 20, 2019, 8 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 1.6 μg/m3 (7) | 37.0 | |
| March 20, 2019, 7 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 1.7 μg/m3 (7) | 35.0 | |
| March 20, 2019, 6 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 2.1 μg/m3 (9) | 35.0 | |
| March 20, 2019, 5 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 1.7 μg/m3 (7) | 30.0 | |
| March 20, 2019, 4 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 1.9 μg/m3 (8) | 31.0 | |
| March 20, 2019, 3 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 2.0 μg/m3 (8) | 34.0 | |
| March 20, 2019, 2 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 2.0 μg/m3 (8) | 33.0 | |
| March 20, 2019, 1 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 1.8 μg/m3 (8) | 34.0 | |
| March 20, 2019, midnight | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 1.8 μg/m3 (8) | 36.0 | |
| March 19, 2019, 11 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 2.0 μg/m3 (8) | 38.0 | |
| March 19, 2019, 10 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 2.1 μg/m3 (9) | 38.0 | |
| March 19, 2019, 9 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 2.4 μg/m3 (10) | 38.0 | |
| March 19, 2019, 8 p.m. | 2.0 ppb (2) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 3.5 μg/m3 (15) | 36.0 | |
| March 19, 2019, 7 p.m. | 2.0 ppb (2) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 3.6 μg/m3 (15) | 34.0 | |
| March 19, 2019, 6 p.m. | 2.0 ppb (2) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 3.1 μg/m3 (13) | 31.0 | |
| March 19, 2019, 5 p.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 6.0 μg/m3 (25) | 31.0 | |
| March 19, 2019, 4 p.m. | 13.0 ppb (12) | 6.0 ppb (6) | N/A | 7.0 ppb (6) | N/A | N/A | 30.0 ppb (23) | N/A | N/A | 7.2 μg/m3 (30) | 30.0 | |
| March 19, 2019, 3 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 2.6 μg/m3 (11) | 25.0 | |
| March 19, 2019, 2 p.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 2.5 μg/m3 (10) | 24.0 | |
| March 19, 2019, 1 p.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 30.0 ppb (23) | N/A | N/A | 2.2 μg/m3 (9) | 23.0 | |
| March 19, 2019, noon | 7.0 ppb (6) | 0.0 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 2.3 μg/m3 (10) | 21.0 | |
| March 19, 2019, 11 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 1.8 μg/m3 (8) | 25.0 | |
| March 19, 2019, 10 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 1.9 μg/m3 (8) | 26.0 | |
| March 19, 2019, 9 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 1.9 μg/m3 (8) | 26.0 | |
| March 19, 2019, 8 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 2.0 μg/m3 (8) | 28.0 | |
| March 19, 2019, 7 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 2.1 μg/m3 (9) | 28.0 | |
| March 19, 2019, 6 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 2.0 μg/m3 (8) | 28.0 | |
| March 19, 2019, 5 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 1.8 μg/m3 (8) | 27.0 | |
| March 19, 2019, 4 a.m. | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 2.5 μg/m3 (10) | 28.0 | |
| March 19, 2019, 3 a.m. | 7.0 ppb (6) | 1.0 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 2.7 μg/m3 (11) | 27.0 | |
| March 19, 2019, 2 a.m. | 14.0 ppb (13) | 1.0 ppb (1) | N/A | 13.0 ppb (12) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 4.4 μg/m3 (18) | 24.0 | |
| March 19, 2019, 1 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 2.3 μg/m3 (10) | 38.0 | |
| March 19, 2019, midnight | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 1.9 μg/m3 (8) | 39.0 | |
| March 18, 2019, 11 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (42) | N/A | N/A | 2.1 μg/m3 (9) | 42.0 | |
| March 18, 2019, 10 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (42) | N/A | N/A | 2.6 μg/m3 (11) | 42.0 | |
| March 18, 2019, 9 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 55.0 ppb (42) | N/A | N/A | 3.2 μg/m3 (13) | 42.0 | |
| March 18, 2019, 8 p.m. | 2.0 ppb (2) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 3.1 μg/m3 (13) | 39.0 | |
| March 18, 2019, 7 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 3.2 μg/m3 (13) | 35.0 | |
| March 18, 2019, 6 p.m. | 5.0 ppb (5) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 41.0 ppb (32) | N/A | N/A | 4.0 μg/m3 (17) | 32.0 | |
| March 18, 2019, 5 p.m. | 7.0 ppb (6) | 3.0 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 4.4 μg/m3 (18) | 28.0 | |
| March 18, 2019, 4 p.m. | 6.0 ppb (6) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 4.9 μg/m3 (20) | 25.0 | |
| March 18, 2019, 3 p.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 2.5 μg/m3 (10) | 25.0 | |
| March 18, 2019, 2 p.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 2.5 μg/m3 (10) | 22.0 | |
| March 18, 2019, 1 p.m. | 12.0 ppb (11) | 2.0 ppb (2) | N/A | 10.0 ppb (9) | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 2.6 μg/m3 (11) | 18.0 | |
| March 18, 2019, noon | 5.0 ppb (5) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 30.0 ppb (23) | N/A | N/A | 2.1 μg/m3 (9) | 23.0 | |
| March 18, 2019, 11 a.m. | 4.0 ppb (4) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 2.0 μg/m3 (8) | 22.0 | |
| March 18, 2019, 10 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 1.8 μg/m3 (8) | 27.0 | |
| March 18, 2019, 9 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 1.8 μg/m3 (8) | 26.0 | |
| March 18, 2019, 8 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 1.9 μg/m3 (8) | 27.0 | |
| March 18, 2019, 7 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 2.1 μg/m3 (9) | 27.0 | |
| March 18, 2019, 6 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 2.1 μg/m3 (9) | 27.0 | |
| March 18, 2019, 5 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 2.3 μg/m3 (10) | 28.0 | |
| March 18, 2019, 4 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 2.4 μg/m3 (10) | 28.0 | |
| March 18, 2019, 3 a.m. | 4.0 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 2.5 μg/m3 (10) | 29.0 | |
| March 18, 2019, 2 a.m. | 12.0 ppb (11) | 1.0 ppb (1) | N/A | 11.0 ppb (10) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 4.1 μg/m3 (17) | 25.0 | |
| March 18, 2019, 1 a.m. | 4.0 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 2.7 μg/m3 (11) | 36.0 | |
| March 18, 2019, midnight | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 1.9 μg/m3 (8) | 40.0 | |
| March 17, 2019, 11 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 1.8 μg/m3 (8) | 40.0 | |
| March 17, 2019, 10 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 1.7 μg/m3 (7) | 40.0 | |
| March 17, 2019, 9 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 1.6 μg/m3 (7) | 40.0 | |
| March 17, 2019, 8 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 1.7 μg/m3 (7) | 38.0 | |
| March 17, 2019, 7 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 1.8 μg/m3 (8) | 35.0 | |
| March 17, 2019, 6 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 1.6 μg/m3 (7) | 33.0 | |
| March 17, 2019, 5 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 1.5 μg/m3 (6) | 32.0 | |
| March 17, 2019, 4 p.m. | 2.0 ppb (2) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 1.8 μg/m3 (8) | 29.0 | |
| March 17, 2019, 3 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 1.9 μg/m3 (8) | 28.0 | |
| March 17, 2019, 2 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 1.6 μg/m3 (7) | 28.0 | |
| March 17, 2019, 1 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 1.5 μg/m3 (6) | 28.0 | |
| March 17, 2019, noon | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 1.9 μg/m3 (8) | 28.0 | |
| March 17, 2019, 11 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 1.5 μg/m3 (6) | 27.0 | |
| March 17, 2019, 10 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 3.1 μg/m3 (13) | 25.0 | |
| March 17, 2019, 9 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 5.9 μg/m3 (25) | 28.0 | |
| March 17, 2019, 8 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 4.3 μg/m3 (18) | 28.0 | |
| March 17, 2019, 7 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 2.6 μg/m3 (11) | 31.0 | |
| March 17, 2019, 6 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 2.9 μg/m3 (12) | 31.0 | |
| March 17, 2019, 5 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 2.2 μg/m3 (9) | 30.0 | |
| March 17, 2019, 4 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 2.4 μg/m3 (10) | 31.0 | |
| March 17, 2019, 3 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 1.6 μg/m3 (7) | 33.0 | |
| March 17, 2019, 2 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 1.4 μg/m3 (6) | 35.0 | |
| March 17, 2019, 1 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 1.4 μg/m3 (6) | 39.0 | |
| March 17, 2019, midnight | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (42) | N/A | N/A | 1.5 μg/m3 (6) | 42.0 | |
| March 16, 2019, 11 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 1.4 μg/m3 (6) | 41.0 | |
| March 16, 2019, 10 p.m. | 2.0 ppb (2) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 55.0 ppb (42) | N/A | N/A | 1.3 μg/m3 (5) | 42.0 | |
| March 16, 2019, 9 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 55.0 ppb (42) | N/A | N/A | 1.4 μg/m3 (6) | 42.0 | |
| March 16, 2019, 8 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (42) | N/A | N/A | 1.7 μg/m3 (7) | 42.0 | |
| March 16, 2019, 7 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 2.0 μg/m3 (8) | 39.0 | |
| March 16, 2019, 6 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 3.4 μg/m3 (14) | 35.0 | |
| March 16, 2019, 5 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 4.6 μg/m3 (19) | 35.0 | |
| March 16, 2019, 4 p.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 3.2 μg/m3 (13) | 32.0 | |
| March 16, 2019, 3 p.m. | 13.0 ppb (12) | 4.0 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 10.6 μg/m3 (44) | 44.0 | |
| March 16, 2019, 2 p.m. | 16.0 ppb (15) | 4.0 ppb (4) | N/A | 12.0 ppb (11) | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 6.1 μg/m3 (25) | 25.0 | |
| March 16, 2019, 1 p.m. | 5.0 ppb (5) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 5.0 μg/m3 (21) | 28.0 | |
| March 16, 2019, noon | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 2.2 μg/m3 (9) | 32.0 | |
| March 16, 2019, 11 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 1.6 μg/m3 (7) | 32.0 | |
| March 16, 2019, 10 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 1.5 μg/m3 (6) | 32.0 | |
| March 16, 2019, 9 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 1.8 μg/m3 (8) | 31.0 | |
| March 16, 2019, 8 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 2.7 μg/m3 (11) | 31.0 | |
| March 16, 2019, 7 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 2.0 μg/m3 (8) | 30.0 | |
| March 16, 2019, 6 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 1.5 μg/m3 (6) | 33.0 | |
| March 16, 2019, 5 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 1.4 μg/m3 (6) | 34.0 | |
| March 16, 2019, 4 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 1.4 μg/m3 (6) | 35.0 | |
| March 16, 2019, 3 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 1.5 μg/m3 (6) | 35.0 | |
| March 16, 2019, 2 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 1.3 μg/m3 (5) | 36.0 | |
| March 16, 2019, 1 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 1.3 μg/m3 (5) | 37.0 | |
| March 16, 2019, midnight | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 1.3 μg/m3 (5) | 38.0 | |
| March 15, 2019, 11 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 1.4 μg/m3 (6) | 38.0 | |
| March 15, 2019, 10 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 1.4 μg/m3 (6) | 38.0 | |
| March 15, 2019, 9 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 1.2 μg/m3 (5) | 38.0 | |
| March 15, 2019, 8 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 1.1 μg/m3 (5) | 38.0 | |
| March 15, 2019, 7 p.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 1.0 μg/m3 (4) | 38.0 | |
| March 15, 2019, 6 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 1.1 μg/m3 (5) | 35.0 | |
| March 15, 2019, 5 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 1.0 μg/m3 (4) | 35.0 | |
| March 15, 2019, 4 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 1.1 μg/m3 (5) | 32.0 | |
| March 15, 2019, 3 p.m. | 2.0 ppb (2) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 1.5 μg/m3 (6) | 28.0 | |
| March 15, 2019, 2 p.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 1.9 μg/m3 (8) | 25.0 | |
| March 15, 2019, 1 p.m. | 5.0 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 1.6 μg/m3 (7) | 24.0 | |
| March 15, 2019, noon | 13.0 ppb (12) | 1.0 ppb (1) | N/A | 12.0 ppb (11) | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 3.1 μg/m3 (13) | 19.0 | |
| March 15, 2019, 11 a.m. | 4.0 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 1.9 μg/m3 (8) | 24.0 | |
| March 15, 2019, 10 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 1.2 μg/m3 (5) | 29.0 | |
| March 15, 2019, 9 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 1.3 μg/m3 (5) | 28.0 | |
| March 15, 2019, 8 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 1.5 μg/m3 (6) | 28.0 | |
| March 15, 2019, 7 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 2.0 μg/m3 (8) | 30.0 |