Saint Louis (Near N Rivfront) MO, US: 38.65643, -90.18977
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 9, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 μg/m3 (101) | 101.0 | |
| April 8, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 μg/m3 (30) | 6.8 μg/m3 (28) | 30.0 | |
| April 8, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.7 μg/m3 (58) | 58.0 | |
| April 8, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 137.0 μg/m3 (91) | 23.9 μg/m3 (75) | 91.0 | |
| April 8, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 155.0 μg/m3 (100) | 25.8 μg/m3 (79) | 100.0 | |
| April 8, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.4 μg/m3 (53) | 53.0 | |
| April 8, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 253.0 μg/m3 (149) | 23.4 μg/m3 (74) | 149.0 | |
| April 8, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.3 μg/m3 (68) | 68.0 | |
| April 8, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 104.0 μg/m3 (74) | 20.3 μg/m3 (68) | 74.0 | |
| April 8, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 71.0 μg/m3 (58) | 16.5 μg/m3 (60) | 60.0 | |
| April 8, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 64.0 μg/m3 (54) | 15.7 μg/m3 (58) | 58.0 | |
| April 8, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 102.0 μg/m3 (74) | 17.8 μg/m3 (62) | 74.0 | |
| April 8, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 170.0 μg/m3 (108) | 26.3 μg/m3 (80) | 108.0 | |
| April 8, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 μg/m3 (36) | 11.3 μg/m3 (47) | 47.0 | |
| April 8, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 μg/m3 (37) | 8.0 μg/m3 (33) | 37.0 | |
| April 8, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 8.5 μg/m3 (35) | 35.0 | |
| April 8, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 9.1 μg/m3 (38) | 38.0 | |
| April 8, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 8.4 μg/m3 (35) | 35.0 | |
| April 8, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (22) | 13.8 μg/m3 (54) | 54.0 | |
| April 8, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (22) | 8.4 μg/m3 (35) | 35.0 | |
| April 8, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (22) | N/A | 22.0 | |
| April 8, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (24) | N/A | 24.0 | |
| April 8, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | N/A | 17.0 | |
| April 8, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | N/A | 16.0 | |
| April 8, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | N/A | 21.0 | |
| April 7, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 85.0 μg/m3 (65) | N/A | 65.0 | |
| April 7, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 μg/m3 (28) | N/A | 28.0 | |
| April 7, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 68.0 μg/m3 (56) | N/A | 56.0 | |
| April 7, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 μg/m3 (27) | 4.5 μg/m3 (19) | 27.0 | |
| April 7, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 119.0 μg/m3 (82) | 4.5 μg/m3 (19) | 82.0 | |
| April 7, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 164.0 μg/m3 (104) | 10.5 μg/m3 (44) | 104.0 | |
| April 7, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 μg/m3 (40) | 7.7 μg/m3 (32) | 40.0 | |
| April 7, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 μg/m3 (28) | 9.7 μg/m3 (40) | 40.0 | |
| April 7, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 86.0 μg/m3 (66) | 6.9 μg/m3 (29) | 66.0 | |
| April 7, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 μg/m3 (45) | 8.3 μg/m3 (35) | 45.0 | |
| April 7, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 μg/m3 (29) | 7.8 μg/m3 (32) | 32.0 | |
| April 7, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 μg/m3 (46) | 9.4 μg/m3 (39) | 46.0 | |
| April 7, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 8.6 μg/m3 (36) | 36.0 | |
| April 7, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (19) | 9.6 μg/m3 (40) | 40.0 | |
| April 7, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (23) | 5.3 μg/m3 (22) | 23.0 | |
| April 7, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 7.3 μg/m3 (30) | 30.0 | |
| April 7, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 9.1 μg/m3 (38) | 38.0 | |
| April 7, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 7.8 μg/m3 (32) | 32.0 | |
| April 7, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | 4.6 μg/m3 (19) | 19.0 | |
| April 7, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 10.6 μg/m3 (44) | 44.0 | |
| April 7, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (23) | 8.9 μg/m3 (37) | 37.0 | |
| April 7, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 μg/m3 (53) | 10.1 μg/m3 (42) | 53.0 | |
| April 7, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m3 (31) | 8.5 μg/m3 (35) | 35.0 | |
| April 7, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 μg/m3 (45) | 4.9 μg/m3 (20) | 45.0 | |
| April 6, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 μg/m3 (54) | 1.7 μg/m3 (7) | 54.0 | |
| April 6, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 μg/m3 (37) | 7.4 μg/m3 (31) | 37.0 | |
| April 6, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 μg/m3 (46) | 6.0 μg/m3 (25) | 46.0 | |
| April 6, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 93.0 μg/m3 (69) | 19.6 μg/m3 (66) | 69.0 | |
| April 6, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 μg/m3 (51) | 13.2 μg/m3 (53) | 53.0 | |
| April 6, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 μg/m3 (53) | 11.2 μg/m3 (47) | 53.0 | |
| April 6, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 μg/m3 (39) | 10.4 μg/m3 (43) | 43.0 | |
| April 6, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 μg/m3 (35) | 11.4 μg/m3 (48) | 48.0 | |
| April 6, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 μg/m3 (48) | 16.4 μg/m3 (59) | 59.0 | |
| April 6, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 62.0 μg/m3 (54) | 14.3 μg/m3 (55) | 55.0 | |
| April 6, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 70.0 μg/m3 (58) | 14.5 μg/m3 (55) | 58.0 | |
| April 6, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 μg/m3 (42) | 20.7 μg/m3 (69) | 69.0 | |
| April 6, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 13.2 μg/m3 (53) | 53.0 | |
| April 6, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 13.9 μg/m3 (54) | 54.0 | |
| April 6, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 14.4 μg/m3 (55) | 55.0 | |
| April 6, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 14.8 μg/m3 (56) | 56.0 | |
| April 6, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 11.1 μg/m3 (46) | 46.0 | |
| April 6, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 μg/m3 (41) | 12.7 μg/m3 (51) | 51.0 | |
| April 6, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 10.3 μg/m3 (43) | 43.0 | |
| April 6, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 11.6 μg/m3 (48) | 48.0 | |
| April 6, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 11.3 μg/m3 (47) | 47.0 | |
| April 6, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 11.8 μg/m3 (49) | 49.0 | |
| April 6, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 20.3 μg/m3 (68) | 68.0 | |
| April 6, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 18.2 μg/m3 (63) | 63.0 | |
| April 5, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 11.6 μg/m3 (48) | 48.0 | |
| April 5, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (19) | 9.0 μg/m3 (38) | 38.0 | |
| April 5, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 10.6 μg/m3 (44) | 44.0 | |
| April 5, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 8.8 μg/m3 (37) | 37.0 | |
| April 5, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | 11.1 μg/m3 (46) | 46.0 | |
| April 5, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 11.7 μg/m3 (49) | 49.0 | |
| April 5, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 8.5 μg/m3 (35) | 35.0 | |
| April 5, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 13.5 μg/m3 (53) | 53.0 | |
| April 5, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 7.7 μg/m3 (32) | 32.0 | |
| April 5, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 8.7 μg/m3 (36) | 36.0 | |
| April 5, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 7.2 μg/m3 (30) | 30.0 | |
| April 5, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 5.8 μg/m3 (24) | 24.0 | |
| April 5, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 8.3 μg/m3 (35) | 35.0 | |
| April 5, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 4.4 μg/m3 (18) | 18.0 | |
| April 5, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 9.8 μg/m3 (41) | 41.0 | |
| April 5, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 6.8 μg/m3 (28) | 28.0 | |
| April 5, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 9.3 μg/m3 (39) | 39.0 | |
| April 5, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 7.5 μg/m3 (31) | 31.0 | |
| April 5, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 7.7 μg/m3 (32) | 32.0 | |
| April 5, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 7.3 μg/m3 (30) | 30.0 | |
| April 5, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 2.9 μg/m3 (12) | 12.0 | |
| April 5, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 7.8 μg/m3 (32) | 32.0 | |
| April 5, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 6.2 μg/m3 (26) | 26.0 | |
| April 5, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 6.0 μg/m3 (25) | 25.0 | |
| April 4, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 4.3 μg/m3 (18) | 18.0 | |
| April 4, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 6.4 μg/m3 (27) | 27.0 | |
| April 4, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 8.5 μg/m3 (35) | 35.0 | |
| April 4, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 8.2 μg/m3 (34) | 34.0 | |
| April 4, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 4.6 μg/m3 (19) | 19.0 | |
| April 4, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 4.1 μg/m3 (17) | 17.0 | |
| April 4, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 5.5 μg/m3 (23) | 23.0 | |
| April 4, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 3.8 μg/m3 (16) | 16.0 | |
| April 4, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 1.8 μg/m3 (8) | 8.0 | |
| April 4, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 3.5 μg/m3 (15) | 15.0 | |
| April 4, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 4.0 μg/m3 (17) | 17.0 | |
| April 4, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | -0.6 μg/m3 (0) | 1.0 | |
| April 4, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 1.6 μg/m3 (7) | 7.0 | |
| April 4, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 1.9 μg/m3 (8) | 8.0 | |
| April 4, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 1.7 μg/m3 (7) | 7.0 | |
| April 4, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 3.0 μg/m3 (12) | 12.0 | |
| April 4, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 1.3 μg/m3 (5) | 5.0 | |
| April 4, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 4.5 μg/m3 (19) | 19.0 | |
| April 4, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 3.9 μg/m3 (16) | 16.0 | |
| April 4, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 2.0 μg/m3 (8) | 8.0 | |
| April 4, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 3.9 μg/m3 (16) | 16.0 | |
| April 4, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 6.1 μg/m3 (25) | 25.0 | |
| April 4, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 8.8 μg/m3 (37) | 37.0 | |
| April 4, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 10.7 μg/m3 (45) | 45.0 | |
| April 3, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (24) | 9.5 μg/m3 (40) | 40.0 | |
| April 3, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 μg/m3 (52) | 8.2 μg/m3 (34) | 52.0 | |
| April 3, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 69.0 μg/m3 (57) | 5.6 μg/m3 (23) | 57.0 | |
| April 3, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 66.0 μg/m3 (56) | 7.3 μg/m3 (30) | 56.0 | |
| April 3, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 80.0 μg/m3 (62) | 0.0 μg/m3 (0) | 62.0 | |
| April 3, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 μg/m3 (34) | 0.0 μg/m3 (0) | 34.0 | |
| April 3, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 69.0 μg/m3 (57) | N/A | 57.0 | |
| April 3, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 μg/m3 (45) | 13.3 μg/m3 (53) | 53.0 | |
| April 3, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 97.0 μg/m3 (71) | 13.3 μg/m3 (53) | 71.0 | |
| April 3, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 μg/m3 (53) | 9.4 μg/m3 (39) | 53.0 | |
| April 3, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 μg/m3 (52) | 7.8 μg/m3 (32) | 52.0 | |
| April 3, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 μg/m3 (39) | 9.9 μg/m3 (41) | 41.0 | |
| April 3, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 μg/m3 (25) | 7.1 μg/m3 (30) | 30.0 | |
| April 3, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 5.7 μg/m3 (24) | 24.0 | |
| April 3, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 6.2 μg/m3 (26) | 26.0 | |
| April 3, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 3.6 μg/m3 (15) | 15.0 | |
| April 3, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 12.6 μg/m3 (51) | 51.0 | |
| April 3, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 8.8 μg/m3 (37) | 37.0 | |
| April 3, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 μg/m3 (27) | 11.7 μg/m3 (49) | 49.0 | |
| April 3, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 μg/m3 (25) | 11.2 μg/m3 (47) | 47.0 | |
| April 3, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 6.7 μg/m3 (28) | 28.0 | |
| April 3, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (24) | 8.1 μg/m3 (34) | 34.0 | |
| April 3, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 μg/m3 (38) | 7.9 μg/m3 (33) | 38.0 | |
| April 3, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 μg/m3 (35) | 11.3 μg/m3 (47) | 47.0 | |
| April 2, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 μg/m3 (35) | 10.7 μg/m3 (45) | 45.0 | |
| April 2, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 μg/m3 (35) | 5.1 μg/m3 (21) | 35.0 | |
| April 2, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 μg/m3 (46) | 7.6 μg/m3 (32) | 46.0 | |
| April 2, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 158.0 μg/m3 (102) | 14.2 μg/m3 (55) | 102.0 | |
| April 2, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 266.0 μg/m3 (156) | 18.9 μg/m3 (65) | 156.0 | |
| April 2, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 122.0 μg/m3 (84) | 6.6 μg/m3 (28) | 84.0 | |
| April 2, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 117.0 μg/m3 (81) | 10.9 μg/m3 (45) | 81.0 | |
| April 2, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 86.0 μg/m3 (66) | 9.7 μg/m3 (40) | 66.0 | |
| April 2, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 201.0 μg/m3 (123) | 10.2 μg/m3 (42) | 123.0 | |
| April 2, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 117.0 μg/m3 (81) | 9.6 μg/m3 (40) | 81.0 | |
| April 2, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 108.0 μg/m3 (76) | 12.1 μg/m3 (50) | 76.0 | |
| April 2, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 69.0 μg/m3 (57) | 11.0 μg/m3 (46) | 57.0 | |
| April 2, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 μg/m3 (30) | 8.5 μg/m3 (35) | 35.0 | |
| April 2, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (23) | 4.0 μg/m3 (17) | 23.0 | |
| April 2, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 4.4 μg/m3 (18) | 18.0 | |
| April 2, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 7.8 μg/m3 (32) | 32.0 | |
| April 2, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 7.5 μg/m3 (31) | 31.0 | |
| April 2, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 μg/m3 (32) | 34.2 μg/m3 (97) | 97.0 | |
| April 2, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 3.7 μg/m3 (15) | 15.0 | |
| April 2, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (19) | 13.0 μg/m3 (52) | 52.0 | |
| April 2, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 5.4 μg/m3 (23) | 23.0 | |
| April 2, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 6.3 μg/m3 (26) | 26.0 | |
| April 2, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | 5.5 μg/m3 (23) | 23.0 |