Philadelphia (W Park) PA, US: 39.988842, -75.207205
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 9, 2020, 2 p.m. | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 13.3 μg/m3 (53) | 53.0 | |
| April 9, 2020, 1 p.m. | N/A | N/A | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 8.1 μg/m3 (34) | 34.0 | |
| April 9, 2020, noon | N/A | N/A | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 9.4 μg/m3 (39) | 39.0 | |
| April 9, 2020, 11 a.m. | N/A | N/A | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 12.8 μg/m3 (52) | 52.0 | |
| April 9, 2020, 10 a.m. | N/A | N/A | N/A | 38.0 ppb (35) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 11.8 μg/m3 (49) | 49.0 | |
| April 9, 2020, 9 a.m. | N/A | N/A | N/A | 51.0 ppb (47) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 10.6 μg/m3 (44) | 47.0 | |
| April 9, 2020, 8 a.m. | N/A | N/A | N/A | 37.0 ppb (34) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 8.1 μg/m3 (34) | 34.0 | |
| April 9, 2020, 7 a.m. | N/A | N/A | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 9.2 μg/m3 (38) | 38.0 | |
| April 9, 2020, 6 a.m. | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 11.1 μg/m3 (46) | 46.0 | |
| April 9, 2020, 5 a.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| April 9, 2020, 4 a.m. | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 12.1 μg/m3 (50) | 50.0 | |
| April 9, 2020, 3 a.m. | N/A | N/A | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | 13.4 μg/m3 (53) | 53.0 | |
| April 9, 2020, 2 a.m. | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.67 ppb (7) | N/A | 16.1 μg/m3 (59) | 59.0 | |
| April 9, 2020, 1 a.m. | N/A | N/A | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| April 9, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.64 ppb (7) | N/A | 8.5 μg/m3 (35) | 35.0 | |
| April 8, 2020, 11 p.m. | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.67 ppb (7) | N/A | 5.1 μg/m3 (21) | 21.0 | |
| April 8, 2020, 10 p.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 5.6 μg/m3 (23) | 23.0 | |
| April 8, 2020, 9 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 3.2 μg/m3 (13) | 13.0 | |
| April 8, 2020, 8 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 4.7 μg/m3 (20) | 20.0 | |
| April 8, 2020, 7 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 2.7 μg/m3 (11) | 11.0 | |
| April 8, 2020, 6 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 1.2 μg/m3 (5) | 5.0 | |
| April 8, 2020, 5 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| April 8, 2020, 4 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 5.0 | |
| April 8, 2020, 3 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 4.1 μg/m3 (17) | 17.0 | |
| April 8, 2020, 2 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 4.8 μg/m3 (20) | 20.0 | |
| April 8, 2020, 1 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 4.2 μg/m3 (18) | 18.0 | |
| April 8, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 5.7 μg/m3 (24) | 24.0 | |
| April 8, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 4.2 μg/m3 (18) | 18.0 | |
| April 8, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 6.4 μg/m3 (27) | 27.0 | |
| April 8, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 10.1 μg/m3 (42) | 42.0 | |
| April 8, 2020, 8 a.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 10.8 μg/m3 (45) | 45.0 | |
| April 8, 2020, 7 a.m. | N/A | N/A | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| April 8, 2020, 6 a.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | 9.7 μg/m3 (40) | 40.0 | |
| April 8, 2020, 5 a.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 8.3 μg/m3 (35) | 35.0 | |
| April 8, 2020, 4 a.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 11.1 μg/m3 (46) | 46.0 | |
| April 8, 2020, 3 a.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| April 8, 2020, 2 a.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| April 8, 2020, 1 a.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 11.8 μg/m3 (49) | 49.0 | |
| April 8, 2020, midnight | N/A | N/A | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 10.8 μg/m3 (45) | 45.0 | |
| April 7, 2020, 11 p.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 9.7 μg/m3 (40) | 40.0 | |
| April 7, 2020, 10 p.m. | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | 8.3 μg/m3 (35) | 35.0 | |
| April 7, 2020, 9 p.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.66 ppb (7) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| April 7, 2020, 8 p.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | 10.6 μg/m3 (44) | 44.0 | |
| April 7, 2020, 7 p.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| April 7, 2020, 6 p.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 7.7 μg/m3 (32) | 32.0 | |
| April 7, 2020, 5 p.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 7, 2020, 4 p.m. | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 5.8 μg/m3 (24) | 24.0 | |
| April 7, 2020, 3 p.m. | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 4.8 μg/m3 (20) | 20.0 | |
| April 7, 2020, 2 p.m. | N/A | N/A | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 4.4 μg/m3 (18) | 18.0 | |
| April 7, 2020, 1 p.m. | N/A | N/A | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 8.1 μg/m3 (34) | 34.0 | |
| April 7, 2020, noon | N/A | N/A | N/A | 48.0 ppb (44) | N/A | N/A | N/A | 0.75 ppb (8) | N/A | 8.6 μg/m3 (36) | 44.0 | |
| April 7, 2020, 11 a.m. | N/A | N/A | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.67 ppb (7) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 7, 2020, 10 a.m. | N/A | N/A | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 6.2 μg/m3 (26) | 26.0 | |
| April 7, 2020, 9 a.m. | N/A | N/A | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 8.2 μg/m3 (34) | 34.0 | |
| April 7, 2020, 8 a.m. | N/A | N/A | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| April 7, 2020, 7 a.m. | N/A | N/A | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 9.4 μg/m3 (39) | 39.0 | |
| April 7, 2020, 6 a.m. | N/A | N/A | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 5.1 μg/m3 (21) | 22.0 | |
| April 7, 2020, 5 a.m. | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 5.7 μg/m3 (24) | 24.0 | |
| April 7, 2020, 4 a.m. | N/A | N/A | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 4.2 μg/m3 (18) | 19.0 | |
| April 7, 2020, 3 a.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 5.8 μg/m3 (24) | 24.0 | |
| April 7, 2020, 2 a.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 4.7 μg/m3 (20) | 20.0 | |
| April 7, 2020, 1 a.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 3.1 μg/m3 (13) | 13.0 | |
| April 7, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 3.7 μg/m3 (15) | 15.0 | |
| April 6, 2020, 11 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 1.8 μg/m3 (8) | 8.0 | |
| April 6, 2020, 10 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 0.5 μg/m3 (2) | 2.0 | |
| April 6, 2020, 9 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 3.0 | |
| April 6, 2020, 8 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 3.0 | |
| April 6, 2020, 7 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 104.6 μg/m3 (176) | 176.0 | |
| April 6, 2020, 6 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 3.0 | |
| April 6, 2020, 5 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 4.0 | |
| April 6, 2020, 4 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 4.0 | |
| April 6, 2020, 3 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | N/A | 4.0 | |
| April 6, 2020, 2 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | N/A | 4.0 | |
| April 6, 2020, 1 p.m. | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | N/A | 6.0 | |
| April 6, 2020, noon | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 8.0 | |
| April 6, 2020, 11 a.m. | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 6.0 | |
| April 6, 2020, 10 a.m. | N/A | N/A | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 7.0 | |
| April 6, 2020, 9 a.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | N/A | 5.0 | |
| April 6, 2020, 8 a.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 5.0 | |
| April 6, 2020, 7 a.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | N/A | 5.0 | |
| April 6, 2020, 6 a.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | N/A | 8.0 | |
| April 6, 2020, 5 a.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | N/A | 10.0 | |
| April 6, 2020, 4 a.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | N/A | 15.0 | |
| April 6, 2020, 3 a.m. | N/A | N/A | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | N/A | 17.0 | |
| April 6, 2020, 2 a.m. | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | N/A | 16.0 | |
| April 6, 2020, 1 a.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 11.0 | |
| April 6, 2020, midnight | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | N/A | 8.0 | |
| April 5, 2020, 11 p.m. | N/A | N/A | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | N/A | 8.0 | |
| April 5, 2020, 10 p.m. | N/A | N/A | N/A | 11.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 | |
| April 5, 2020, 9 p.m. | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 6.0 | |
| April 5, 2020, 8 p.m. | N/A | N/A | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | N/A | 6.0 | |
| April 5, 2020, 7 p.m. | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | N/A | 6.0 | |
| April 5, 2020, 6 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | N/A | 5.0 | |
| April 5, 2020, 5 p.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | N/A | 6.0 | |
| April 5, 2020, 4 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 5.0 | |
| April 5, 2020, 3 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | N/A | 5.0 | |
| April 5, 2020, 2 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | N/A | 5.0 | |
| April 5, 2020, 1 p.m. | N/A | N/A | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | N/A | 11.0 | |
| April 5, 2020, noon | N/A | N/A | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | N/A | 19.0 | |
| April 5, 2020, 11 a.m. | N/A | N/A | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | N/A | 19.0 | |
| April 5, 2020, 10 a.m. | N/A | N/A | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.57 ppb (6) | N/A | N/A | 20.0 | |
| April 5, 2020, 9 a.m. | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | N/A | 16.0 | |
| April 5, 2020, 8 a.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | N/A | 15.0 | |
| April 5, 2020, 7 a.m. | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | N/A | 16.0 | |
| April 5, 2020, 6 a.m. | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | N/A | 13.0 | |
| April 5, 2020, 5 a.m. | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | N/A | 13.0 | |
| April 5, 2020, 4 a.m. | N/A | N/A | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | N/A | 18.0 | |
| April 5, 2020, 3 a.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | N/A | 15.0 | |
| April 5, 2020, 2 a.m. | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | N/A | 13.0 | |
| April 5, 2020, 1 a.m. | N/A | N/A | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | N/A | 18.0 | |
| April 5, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.52 ppb (6) | N/A | N/A | 6.0 | |
| April 4, 2020, 11 p.m. | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | N/A | 6.0 | |
| April 4, 2020, 10 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| April 4, 2020, 9 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 5.0 | |
| April 4, 2020, 8 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 5.0 | |
| April 4, 2020, 7 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | N/A | 4.0 | |
| April 4, 2020, 6 p.m. | N/A | N/A | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | N/A | 9.0 | |
| April 4, 2020, 5 p.m. | N/A | N/A | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | N/A | 24.0 | |
| April 4, 2020, 4 p.m. | N/A | N/A | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | N/A | 21.0 | |
| April 4, 2020, 3 p.m. | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | N/A | 0.57 ppb (6) | N/A | N/A | 30.0 | |
| April 4, 2020, 2 p.m. | N/A | N/A | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | N/A | 20.0 | |
| April 4, 2020, 1 p.m. | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | N/A | 15.0 | |
| April 4, 2020, noon | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 13.0 | |
| April 4, 2020, 11 a.m. | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | N/A | 6.0 | |
| April 4, 2020, 10 a.m. | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | N/A | 5.0 | |
| April 4, 2020, 9 a.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 4.0 | |
| April 4, 2020, 8 a.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 4.0 | |
| April 4, 2020, 7 a.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 4.0 | |
| April 4, 2020, 6 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | N/A | 4.0 | |
| April 4, 2020, 5 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | N/A | 4.0 | |
| April 4, 2020, 4 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | N/A | 4.0 | |
| April 4, 2020, 3 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | N/A | 4.0 | |
| April 4, 2020, 2 a.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | N/A | 4.0 | |
| April 4, 2020, 1 a.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 4.0 | |
| April 4, 2020, midnight | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 4.0 | |
| April 3, 2020, 11 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 4.0 | |
| April 3, 2020, 10 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| April 3, 2020, 9 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 4.0 | |
| April 3, 2020, 8 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 4.0 | |
| April 3, 2020, 7 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 3.5 μg/m3 (15) | 15.0 | |
| April 3, 2020, 6 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 0.3 μg/m3 (1) | 4.0 | |
| April 3, 2020, 5 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 3.1 μg/m3 (13) | 13.0 | |
| April 3, 2020, 4 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 4.0 | |
| April 3, 2020, 3 p.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 4.0 | |
| April 3, 2020, 2 p.m. | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 2.7 μg/m3 (11) | 11.0 | |
| April 3, 2020, 1 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 1.2 μg/m3 (5) | 5.0 | |
| April 3, 2020, noon | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 3.3 μg/m3 (14) | 14.0 | |
| April 3, 2020, 11 a.m. | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 5.5 μg/m3 (23) | 23.0 | |
| April 3, 2020, 10 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 2.2 μg/m3 (9) | 9.0 | |
| April 3, 2020, 9 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 4.2 μg/m3 (18) | 18.0 | |
| April 3, 2020, 8 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 5.6 μg/m3 (23) | 23.0 | |
| April 3, 2020, 7 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| April 3, 2020, 6 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 3.2 μg/m3 (13) | 13.0 | |
| April 3, 2020, 5 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.8 μg/m3 (20) | 20.0 | |
| April 3, 2020, 4 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 3, 2020, 3 a.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.1 μg/m3 (17) | 17.0 | |
| April 3, 2020, 2 a.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.7 μg/m3 (20) | 20.0 | |
| April 3, 2020, 1 a.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| April 3, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 2.8 μg/m3 (12) | 12.0 | |
| April 2, 2020, 11 p.m. | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 2, 2020, 10 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 1.8 μg/m3 (8) | 8.0 | |
| April 2, 2020, 9 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | -0.1 μg/m3 (0) | 3.0 | |
| April 2, 2020, 8 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 3.0 | |
| April 2, 2020, 7 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 3.0 | |
| April 2, 2020, 6 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 2, 2020, 5 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 2, 2020, 4 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 2, 2020, 3 p.m. | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 2.2 μg/m3 (9) | 9.0 |