Steubenville (Pleasant Heights) OH, US: 40.366452, -80.615691
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| July 14, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | N/A | 4.1 μg/m3 (17) | 17.0 | |
| July 14, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 0.6 μg/m3 (2) | 2.0 | |
| July 14, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | N/A | 0.1 μg/m3 (0) | N/A | |
| July 14, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | N/A | 1.3 μg/m3 (5) | 5.0 | |
| July 14, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.0 ppb (1) | N/A | N/A | 1.8 μg/m3 (8) | 8.0 | |
| July 14, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.0 ppb (1) | N/A | N/A | 1.1 μg/m3 (5) | 5.0 | |
| July 14, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | N/A | 1.4 μg/m3 (6) | 6.0 | |
| July 14, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 3.0 ppb (2) | N/A | N/A | 0.1 μg/m3 (0) | 2.0 | |
| July 14, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 0.1 μg/m3 (0) | 3.0 | |
| July 14, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 5.0 ppb (4) | N/A | N/A | 2.1 μg/m3 (9) | 9.0 | |
| July 14, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 7.0 ppb (5) | N/A | N/A | 1.4 μg/m3 (6) | 6.0 | |
| July 14, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 10.0 ppb (8) | N/A | N/A | 1.2 μg/m3 (5) | 8.0 | |
| July 13, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | 0.7 μg/m3 (3) | 14.0 | |
| July 13, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 1.5 μg/m3 (6) | 17.0 | |
| July 13, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 3.3 μg/m3 (14) | 18.0 | |
| July 13, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 3.3 μg/m3 (14) | 18.0 | |
| July 13, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 4.6 μg/m3 (19) | 19.0 | |
| July 13, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 4.8 μg/m3 (20) | 20.0 | |
| July 13, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 13, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| July 13, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 36.0 ppb (28) | N/A | N/A | 6.1 μg/m3 (25) | 28.0 | |
| July 13, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (4) | 28.0 ppb (22) | N/A | N/A | 5.0 μg/m3 (21) | 22.0 | |
| July 13, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (13) | 9.0 ppb (7) | N/A | N/A | 18.9 μg/m3 (65) | 65.0 | |
| July 13, 2020, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 5.0 ppb (4) | N/A | N/A | 6.2 μg/m3 (26) | 26.0 | |
| July 13, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 4.0 ppb (3) | N/A | N/A | 5.4 μg/m3 (23) | 23.0 | |
| July 13, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.4 μg/m3 (18) | 18.0 | |
| July 13, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 5.0 ppb (4) | N/A | N/A | 3.1 μg/m3 (13) | 13.0 | |
| July 13, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 6.0 ppb (5) | N/A | N/A | 3.4 μg/m3 (14) | 14.0 | |
| July 13, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 6.0 ppb (5) | N/A | N/A | 4.2 μg/m3 (18) | 18.0 | |
| July 13, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 6.0 ppb (5) | N/A | N/A | 4.9 μg/m3 (20) | 20.0 | |
| July 13, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 10.0 ppb (8) | N/A | N/A | 4.2 μg/m3 (18) | 18.0 | |
| July 13, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 11.0 ppb (8) | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 13, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 5.7 μg/m3 (24) | 24.0 | |
| July 13, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | 3.9 μg/m3 (16) | 16.0 | |
| July 13, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 8.9 μg/m3 (37) | 37.0 | |
| July 13, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 10.4 μg/m3 (43) | 43.0 | |
| July 12, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 6.3 μg/m3 (26) | 26.0 | |
| July 12, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (29) | N/A | N/A | 3.5 μg/m3 (15) | 29.0 | |
| July 12, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 37.0 ppb (28) | N/A | N/A | 2.5 μg/m3 (10) | 28.0 | |
| July 12, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 37.0 ppb (28) | N/A | N/A | 2.0 μg/m3 (8) | 28.0 | |
| July 12, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (29) | N/A | N/A | 2.8 μg/m3 (12) | 29.0 | |
| July 12, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 40.0 ppb (31) | N/A | N/A | 3.0 μg/m3 (12) | 31.0 | |
| July 12, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 39.0 ppb (30) | N/A | N/A | 2.0 μg/m3 (8) | 30.0 | |
| July 12, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 40.0 ppb (31) | N/A | N/A | 1.8 μg/m3 (8) | 31.0 | |
| July 12, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (29) | N/A | N/A | 3.0 μg/m3 (12) | 29.0 | |
| July 12, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 4.5 μg/m3 (19) | 25.0 | |
| July 12, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | 6.3 μg/m3 (26) | 26.0 | |
| July 12, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | 8.6 μg/m3 (36) | 36.0 | |
| July 12, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 4.0 ppb (3) | N/A | N/A | 9.8 μg/m3 (41) | 41.0 | |
| July 12, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 10.8 μg/m3 (45) | 45.0 | |
| July 12, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | N/A | 8.1 μg/m3 (34) | 34.0 | |
| July 12, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| July 12, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 3.0 ppb (2) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 12, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 5.0 ppb (4) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 12, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 7.0 ppb (5) | N/A | N/A | 9.6 μg/m3 (40) | 40.0 | |
| July 12, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 8.0 ppb (6) | N/A | N/A | 9.4 μg/m3 (39) | 39.0 | |
| July 12, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 4.2 μg/m3 (18) | 18.0 | |
| July 12, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (16) | N/A | N/A | 2.9 μg/m3 (12) | 16.0 | |
| July 12, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 3.5 μg/m3 (15) | 18.0 | |
| July 12, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (21) | N/A | N/A | 3.0 μg/m3 (12) | 21.0 | |
| July 11, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 0.7 μg/m3 (3) | 25.0 | |
| July 11, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 37.0 ppb (28) | N/A | N/A | 2.5 μg/m3 (10) | 28.0 | |
| July 11, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (29) | N/A | N/A | 3.5 μg/m3 (15) | 29.0 | |
| July 11, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 39.0 ppb (30) | N/A | N/A | 0.2 μg/m3 (1) | 30.0 | |
| July 11, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 40.0 ppb (31) | N/A | N/A | 2.5 μg/m3 (10) | 31.0 | |
| July 11, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 40.0 ppb (31) | N/A | N/A | 3.0 μg/m3 (12) | 31.0 | |
| July 11, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 0.2 μg/m3 (1) | 26.0 | |
| July 11, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 0.8 μg/m3 (3) | 18.0 | |
| July 11, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | 1.9 μg/m3 (8) | 19.0 | |
| July 11, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | 0.1 μg/m3 (0) | 19.0 | |
| July 11, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 0.1 μg/m3 (0) | 18.0 | |
| July 11, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 0.1 μg/m3 (0) | 18.0 | |
| July 11, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 0.1 μg/m3 (0) | 18.0 | |
| July 11, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 0.1 μg/m3 (0) | N/A | |
| July 11, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 6.0 ppb (5) | N/A | N/A | 0.1 μg/m3 (0) | 5.0 | |
| July 11, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 6.0 ppb (5) | N/A | N/A | 0.1 μg/m3 (0) | 5.0 | |
| July 11, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 6.0 ppb (5) | N/A | N/A | 0.4 μg/m3 (2) | 5.0 | |
| July 11, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 5.0 ppb (4) | N/A | N/A | 1.6 μg/m3 (7) | 7.0 | |
| July 11, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | N/A | 2.9 μg/m3 (12) | 12.0 | |
| July 11, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| July 11, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 3.7 μg/m3 (15) | 15.0 | |
| July 11, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 3.0 ppb (2) | N/A | N/A | 1.6 μg/m3 (7) | 7.0 | |
| July 11, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 3.0 ppb (2) | N/A | N/A | 0.1 μg/m3 (0) | 2.0 | |
| July 11, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 4.0 ppb (3) | N/A | N/A | 0.2 μg/m3 (1) | 3.0 | |
| July 10, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 5.0 ppb (4) | N/A | N/A | 0.2 μg/m3 (1) | 4.0 | |
| July 10, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 8.0 ppb (6) | N/A | N/A | 0.7 μg/m3 (3) | 6.0 | |
| July 10, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 9.2 μg/m3 (38) | 38.0 | |
| July 10, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (21) | N/A | N/A | 8.8 μg/m3 (37) | 37.0 | |
| July 10, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | 8.5 μg/m3 (35) | 35.0 | |
| July 10, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | 9.8 μg/m3 (41) | 41.0 | |
| July 10, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (17) | 40.0 ppb (31) | N/A | N/A | 27.0 μg/m3 (82) | 82.0 | |
| July 10, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (31) | 61.0 ppb (47) | N/A | N/A | 31.0 μg/m3 (90) | 90.0 | |
| July 10, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (19) | 54.0 ppb (42) | N/A | N/A | 18.3 μg/m3 (63) | 63.0 | |
| July 10, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (14) | 41.0 ppb (32) | N/A | N/A | 18.3 μg/m3 (63) | 63.0 | |
| July 10, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (10) | 30.0 ppb (23) | N/A | N/A | 17.0 μg/m3 (61) | 61.0 | |
| July 10, 2020, noon | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (7) | 13.0 ppb (10) | N/A | N/A | 16.7 μg/m3 (60) | 60.0 | |
| July 10, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 7.0 ppb (5) | N/A | N/A | 8.8 μg/m3 (37) | 37.0 | |
| July 10, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 7.3 μg/m3 (30) | 30.0 | |
| July 10, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 7.0 ppb (5) | N/A | N/A | 7.5 μg/m3 (31) | 31.0 | |
| July 10, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 13.0 ppb (10) | N/A | N/A | 8.3 μg/m3 (35) | 35.0 | |
| July 10, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | 10.4 μg/m3 (43) | 43.0 | |
| July 10, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 26.0 ppb (20) | N/A | N/A | 12.9 μg/m3 (52) | 52.0 | |
| July 10, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 10.7 μg/m3 (45) | 45.0 | |
| July 10, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 40.0 ppb (31) | N/A | N/A | 6.1 μg/m3 (25) | 31.0 | |
| July 10, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 7.9 μg/m3 (33) | 36.0 | |
| July 10, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (24) | N/A | N/A | 12.2 μg/m3 (50) | 50.0 | |
| July 10, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 35.0 ppb (27) | N/A | N/A | 13.7 μg/m3 (54) | 54.0 | |
| July 10, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 48.0 ppb (37) | N/A | N/A | 18.3 μg/m3 (63) | 63.0 | |
| July 9, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 59.0 ppb (45) | N/A | N/A | 20.1 μg/m3 (67) | 67.0 | |
| July 9, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 71.0 ppb (55) | N/A | N/A | 17.1 μg/m3 (61) | 61.0 | |
| July 9, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 75.0 ppb (58) | N/A | N/A | 17.9 μg/m3 (63) | 63.0 | |
| July 9, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (7) | 78.0 ppb (61) | N/A | N/A | 24.2 μg/m3 (76) | 76.0 | |
| July 9, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (9) | 81.0 ppb (63) | N/A | N/A | 22.4 μg/m3 (72) | 72.0 | |
| July 9, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (10) | 85.0 ppb (67) | N/A | N/A | 23.6 μg/m3 (75) | 75.0 | |
| July 9, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 69.0 ppb (53) | N/A | N/A | 15.8 μg/m3 (58) | 58.0 | |
| July 9, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (7) | 71.0 ppb (55) | N/A | N/A | 20.8 μg/m3 (69) | 69.0 | |
| July 9, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (23) | 65.0 ppb (50) | N/A | N/A | 25.4 μg/m3 (79) | 79.0 | |
| July 9, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (31) | 39.0 ppb (30) | N/A | N/A | 31.4 μg/m3 (91) | 91.0 | |
| July 9, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (30) | 12.0 ppb (9) | N/A | N/A | 49.9 μg/m3 (136) | 136.0 | |
| July 9, 2020, noon | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 3.0 ppb (2) | N/A | N/A | 19.5 μg/m3 (66) | 66.0 | |
| July 9, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.0 ppb (1) | N/A | N/A | 20.9 μg/m3 (69) | 69.0 | |
| July 9, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 12.1 μg/m3 (50) | 50.0 | |
| July 9, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | N/A | 16.1 μg/m3 (59) | 59.0 | |
| July 9, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | N/A | 13.6 μg/m3 (53) | 53.0 | |
| July 9, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.0 ppb (1) | N/A | N/A | 14.4 μg/m3 (55) | 55.0 | |
| July 9, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | N/A | 12.6 μg/m3 (51) | 51.0 | |
| July 9, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 3.0 ppb (2) | N/A | N/A | 7.6 μg/m3 (32) | 32.0 | |
| July 8, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (4) | 63.0 ppb (48) | N/A | N/A | 14.5 μg/m3 (55) | 55.0 | |
| July 8, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 52.0 ppb (40) | N/A | N/A | 14.2 μg/m3 (55) | 55.0 | |
| July 8, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (11) | 36.0 ppb (28) | N/A | N/A | 15.5 μg/m3 (57) | 57.0 | |
| July 8, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (7) | 16.0 ppb (12) | N/A | N/A | 13.8 μg/m3 (54) | 54.0 | |
| July 8, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 8.0 ppb (6) | N/A | N/A | 9.6 μg/m3 (40) | 40.0 | |
| July 8, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 8.0 ppb (6) | N/A | N/A | 6.2 μg/m3 (26) | 26.0 | |
| July 8, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 7.8 μg/m3 (32) | 32.0 | |
| July 8, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.0 ppb (1) | N/A | N/A | 18.6 μg/m3 (64) | 64.0 | |
| July 8, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | N/A | 46.8 μg/m3 (128) | 128.0 | |
| July 8, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 5.0 ppb (4) | N/A | N/A | 10.6 μg/m3 (44) | 44.0 | |
| July 8, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 9.0 ppb (7) | N/A | N/A | 7.5 μg/m3 (31) | 31.0 | |
| July 8, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 9.0 ppb (7) | N/A | N/A | 5.7 μg/m3 (24) | 24.0 | |
| July 8, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| July 8, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 7.3 μg/m3 (30) | 30.0 | |
| July 8, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | N/A | N/A | 8.1 μg/m3 (34) | 34.0 | |
| July 8, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 5.7 μg/m3 (24) | 24.0 | |
| July 8, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 2.9 μg/m3 (12) | 22.0 | |
| July 7, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 0.2 μg/m3 (1) | 25.0 | |
| July 7, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 39.0 ppb (30) | N/A | N/A | 0.2 μg/m3 (1) | 30.0 | |
| July 7, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 51.0 ppb (39) | N/A | N/A | 0.7 μg/m3 (3) | 39.0 | |
| July 7, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 60.0 ppb (46) | N/A | N/A | 19.1 μg/m3 (65) | 65.0 | |
| July 7, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (4) | 65.0 ppb (50) | N/A | N/A | 18.9 μg/m3 (65) | 65.0 | |
| July 7, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 60.0 ppb (46) | N/A | N/A | 12.8 μg/m3 (52) | 52.0 | |
| July 7, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 59.0 ppb (45) | N/A | N/A | 11.3 μg/m3 (47) | 47.0 | |
| July 7, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (4) | 59.0 ppb (45) | N/A | N/A | 17.1 μg/m3 (61) | 61.0 | |
| July 7, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (13) | 64.0 ppb (49) | N/A | N/A | 25.6 μg/m3 (79) | 79.0 | |
| July 7, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (17) | 38.0 ppb (29) | N/A | N/A | 21.5 μg/m3 (70) | 70.0 | |
| July 7, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (16) | 20.0 ppb (15) | N/A | N/A | 23.8 μg/m3 (75) | 75.0 | |
| July 7, 2020, noon | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (13) | 10.0 ppb (8) | N/A | N/A | 35.6 μg/m3 (100) | 100.0 | |
| July 7, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 3.0 ppb (2) | N/A | N/A | 17.4 μg/m3 (61) | 61.0 | |
| July 7, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 9.8 μg/m3 (41) | 41.0 | |
| July 7, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 4.0 ppb (3) | N/A | N/A | 9.3 μg/m3 (39) | 39.0 | |
| July 7, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 8.0 ppb (6) | N/A | N/A | 9.4 μg/m3 (39) | 39.0 | |
| July 7, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 12.0 ppb (9) | N/A | N/A | 8.4 μg/m3 (35) | 35.0 | |
| July 7, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | 9.1 μg/m3 (38) | 38.0 | |
| July 7, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | 9.7 μg/m3 (40) | 40.0 | |
| July 7, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | N/A | N/A | 10.7 μg/m3 (45) | 45.0 | |
| July 7, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 12.9 μg/m3 (52) | 52.0 | |
| July 7, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | 11.2 μg/m3 (47) | 47.0 | |
| July 7, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 39.0 ppb (30) | N/A | N/A | 9.7 μg/m3 (40) | 40.0 | |
| July 7, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 55.0 ppb (42) | N/A | N/A | 11.5 μg/m3 (48) | 48.0 |