Philadelphia (Torresdale) PA, US: 40.054171, -74.985166
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 29, 2020, midnight | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 28, 2020, 11 p.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 4.9 μg/m3 (20) | 20.0 | |
| March 28, 2020, 10 p.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 28, 2020, 9 p.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 28, 2020, 8 p.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 28, 2020, 7 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 28, 2020, 6 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| March 28, 2020, 5 p.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 28, 2020, 4 p.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 28, 2020, 3 p.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| March 28, 2020, 2 p.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 28, 2020, 1 p.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 7.9 μg/m3 (33) | 33.0 | |
| March 28, 2020, noon | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 13.8 μg/m3 (54) | 54.0 | |
| March 28, 2020, 11 a.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 8.1 μg/m3 (34) | 34.0 | |
| March 28, 2020, 10 a.m. | N/A | N/A | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 28, 2020, 9 a.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 3.0 μg/m3 (12) | 15.0 | |
| March 28, 2020, 8 a.m. | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| March 28, 2020, 7 a.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 10.9 μg/m3 (45) | 45.0 | |
| March 28, 2020, 6 a.m. | N/A | N/A | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 19.8 μg/m3 (67) | 67.0 | |
| March 28, 2020, 5 a.m. | N/A | N/A | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 25.8 μg/m3 (79) | 79.0 | |
| March 28, 2020, 4 a.m. | N/A | N/A | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.65 ppb (7) | N/A | 19.1 μg/m3 (65) | 65.0 | |
| March 28, 2020, 3 a.m. | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | N/A | 0.77 ppb (9) | N/A | 18.0 μg/m3 (63) | 63.0 | |
| March 28, 2020, 2 a.m. | N/A | N/A | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 19.9 μg/m3 (67) | 67.0 | |
| March 28, 2020, 1 a.m. | N/A | N/A | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | 12.1 μg/m3 (50) | 50.0 | |
| March 28, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 27, 2020, 11 p.m. | N/A | N/A | N/A | 23.0 ppb (21) | N/A | N/A | N/A | N/A | N/A | 4.1 μg/m3 (17) | 21.0 | |
| March 27, 2020, 10 p.m. | N/A | N/A | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 2.0 μg/m3 (8) | 12.0 | |
| March 27, 2020, 9 p.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 2.9 μg/m3 (12) | 12.0 | |
| March 27, 2020, 8 p.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| March 27, 2020, 7 p.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| March 27, 2020, 6 p.m. | N/A | N/A | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 4.9 μg/m3 (20) | 20.0 | |
| March 27, 2020, 5 p.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 27, 2020, 4 p.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| March 27, 2020, 3 p.m. | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 27, 2020, 2 p.m. | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 27, 2020, 1 p.m. | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 27, 2020, noon | N/A | N/A | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 9.9 μg/m3 (41) | 41.0 | |
| March 27, 2020, 11 a.m. | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 27, 2020, 10 a.m. | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 27, 2020, 9 a.m. | N/A | N/A | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 8.9 μg/m3 (37) | 37.0 | |
| March 27, 2020, 8 a.m. | N/A | N/A | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 27, 2020, 7 a.m. | N/A | N/A | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 27, 2020, 6 a.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 9.9 μg/m3 (41) | 41.0 | |
| March 27, 2020, 5 a.m. | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 27, 2020, 4 a.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 2.0 μg/m3 (8) | 10.0 | |
| March 27, 2020, 3 a.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| March 27, 2020, 2 a.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| March 27, 2020, 1 a.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| March 27, 2020, midnight | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 26, 2020, 11 p.m. | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 26, 2020, 10 p.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 26, 2020, 9 p.m. | N/A | N/A | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| March 26, 2020, 8 p.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 26, 2020, 7 p.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 26, 2020, 6 p.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 4.9 μg/m3 (20) | 20.0 | |
| March 26, 2020, 5 p.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| March 26, 2020, 4 p.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 26, 2020, 3 p.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 26, 2020, 2 p.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| March 26, 2020, 1 p.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 9.9 μg/m3 (41) | 41.0 | |
| March 26, 2020, noon | N/A | N/A | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 26, 2020, 11 a.m. | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | 9.9 μg/m3 (41) | 41.0 | |
| March 26, 2020, 10 a.m. | N/A | N/A | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 26, 2020, 9 a.m. | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 9.9 μg/m3 (41) | 41.0 | |
| March 26, 2020, 8 a.m. | N/A | N/A | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 26, 2020, 7 a.m. | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 26, 2020, 6 a.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 15.0 | |
| March 26, 2020, 5 a.m. | N/A | N/A | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 2.0 μg/m3 (8) | 12.0 | |
| March 26, 2020, 4 a.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| March 26, 2020, 3 a.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| March 26, 2020, 2 a.m. | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 26, 2020, 1 a.m. | N/A | N/A | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 26, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 25, 2020, 11 p.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 25, 2020, 10 p.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 3.0 μg/m3 (12) | 15.0 | |
| March 25, 2020, 9 p.m. | N/A | N/A | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 2.0 μg/m3 (8) | 12.0 | |
| March 25, 2020, 8 p.m. | N/A | N/A | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.9 μg/m3 (12) | 12.0 | |
| March 25, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| March 25, 2020, 6 p.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 1.0 μg/m3 (4) | 5.0 | |
| March 25, 2020, 5 p.m. | N/A | N/A | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 0.0 μg/m3 (0) | 6.0 | |
| March 25, 2020, 4 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 0.9 μg/m3 (4) | 4.0 | |
| March 25, 2020, 3 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 2.9 μg/m3 (12) | 12.0 | |
| March 25, 2020, 2 p.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| March 25, 2020, 1 p.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| March 25, 2020, noon | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| March 25, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| March 25, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 25, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| March 25, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| March 25, 2020, 7 a.m. | N/A | N/A | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 2.9 μg/m3 (12) | 12.0 | |
| March 25, 2020, 6 a.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 25, 2020, 5 a.m. | N/A | N/A | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 0.0 μg/m3 (0) | 6.0 | |
| March 25, 2020, 4 a.m. | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 2.9 μg/m3 (12) | 12.0 | |
| March 25, 2020, 3 a.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 25, 2020, 2 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 25, 2020, 1 a.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| March 25, 2020, midnight | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 24, 2020, 11 p.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 0.0 μg/m3 (0) | 5.0 | |
| March 24, 2020, 10 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | -0.9 μg/m3 (0) | 4.0 | |
| March 24, 2020, 9 p.m. | N/A | N/A | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 0.9 μg/m3 (4) | 6.0 | |
| March 24, 2020, 8 p.m. | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 2.9 μg/m3 (12) | 13.0 | |
| March 24, 2020, 7 p.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 2.0 μg/m3 (8) | 11.0 | |
| March 24, 2020, 6 p.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 1.0 μg/m3 (4) | 11.0 | |
| March 24, 2020, 5 p.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 1.9 μg/m3 (8) | 10.0 | |
| March 24, 2020, 4 p.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 4.9 μg/m3 (20) | 20.0 | |
| March 24, 2020, 3 p.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| March 24, 2020, 2 p.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 24, 2020, 1 p.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 0.0 μg/m3 (0) | 11.0 | |
| March 24, 2020, noon | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 0.0 μg/m3 (0) | 13.0 | |
| March 24, 2020, 11 a.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 1.9 μg/m3 (8) | 11.0 | |
| March 24, 2020, 10 a.m. | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 2.0 μg/m3 (8) | 16.0 | |
| March 24, 2020, 9 a.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 2.0 μg/m3 (8) | 15.0 | |
| March 24, 2020, 8 a.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| March 24, 2020, 7 a.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 3.0 μg/m3 (12) | 15.0 | |
| March 24, 2020, 6 a.m. | N/A | N/A | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 3.0 μg/m3 (12) | 18.0 | |
| March 24, 2020, 5 a.m. | N/A | N/A | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| March 24, 2020, 4 a.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 24, 2020, 3 a.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 24, 2020, 2 a.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 0.0 μg/m3 (0) | 8.0 | |
| March 24, 2020, 1 a.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | -0.9 μg/m3 (0) | 8.0 | |
| March 24, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 0.9 μg/m3 (4) | 4.0 | |
| March 23, 2020, 11 p.m. | N/A | N/A | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 12.0 | |
| March 23, 2020, 10 p.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 0.9 μg/m3 (4) | 11.0 | |
| March 23, 2020, 9 p.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 1.9 μg/m3 (8) | 8.0 | |
| March 23, 2020, 8 p.m. | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 2.0 μg/m3 (8) | 14.0 | |
| March 23, 2020, 7 p.m. | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | -0.9 μg/m3 (0) | 16.0 | |
| March 23, 2020, 6 p.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | -1.9 μg/m3 (0) | 5.0 | |
| March 23, 2020, 5 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 0.0 μg/m3 (0) | 2.0 | |
| March 23, 2020, 4 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 1.9 μg/m3 (8) | 8.0 | |
| March 23, 2020, 3 p.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| March 23, 2020, 2 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 23, 2020, 1 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 23, 2020, noon | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| March 23, 2020, 11 a.m. | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 4.9 μg/m3 (20) | 20.0 | |
| March 23, 2020, 10 a.m. | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| March 23, 2020, 9 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| March 23, 2020, 8 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 2.9 μg/m3 (12) | 12.0 | |
| March 23, 2020, 7 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| March 23, 2020, 6 a.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 23, 2020, 5 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 23, 2020, 4 a.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 23, 2020, 3 a.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| March 23, 2020, 2 a.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| March 23, 2020, 1 a.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 23, 2020, midnight | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| March 22, 2020, 11 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 7.9 μg/m3 (33) | 33.0 | |
| March 22, 2020, 10 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 22, 2020, 9 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 22, 2020, 8 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 22, 2020, 7 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 4.9 μg/m3 (20) | 20.0 | |
| March 22, 2020, 6 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 7.9 μg/m3 (33) | 33.0 | |
| March 22, 2020, 5 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 22, 2020, 4 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 22, 2020, 3 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 4.9 μg/m3 (20) | 20.0 | |
| March 22, 2020, 2 p.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 22, 2020, 1 p.m. | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 22, 2020, noon | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 4.9 μg/m3 (20) | 20.0 | |
| March 22, 2020, 11 a.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 22, 2020, 10 a.m. | N/A | N/A | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 1.0 μg/m3 (4) | 6.0 | |
| March 22, 2020, 9 a.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 0.0 μg/m3 (0) | 5.0 | |
| March 22, 2020, 8 a.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 1.9 μg/m3 (8) | 8.0 | |
| March 22, 2020, 7 a.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 2.9 μg/m3 (12) | 12.0 | |
| March 22, 2020, 6 a.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| March 22, 2020, 5 a.m. | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 4.9 μg/m3 (20) | 20.0 | |
| March 22, 2020, 4 a.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| March 22, 2020, 3 a.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 22, 2020, 2 a.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| March 22, 2020, 1 a.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 |