Richmond (Broadmoor) CC, CA: 49.14139, -123.10833
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 20, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 0.4 μg/m3 (2) | 13.0 | |
| Sept. 20, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 0.0 μg/m3 (0) | 13.0 | |
| Sept. 20, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 0.4 μg/m3 (2) | 8.0 | |
| Sept. 20, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 1.6 μg/m3 (7) | 7.0 | |
| Sept. 20, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 0.0 μg/m3 (0) | 15.0 | |
| Sept. 20, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 0.6 μg/m3 (2) | 15.0 | |
| Sept. 20, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 1.5 μg/m3 (6) | 15.0 | |
| Sept. 20, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 3.4 μg/m3 (14) | 14.0 | |
| Sept. 20, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 4.9 μg/m3 (20) | 20.0 | |
| Sept. 20, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 5.8 μg/m3 (24) | 24.0 | |
| Sept. 20, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 6.7 μg/m3 (28) | 28.0 | |
| Sept. 20, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 6.9 μg/m3 (29) | 29.0 | |
| Sept. 20, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 20, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 4.8 μg/m3 (20) | 20.0 | |
| Sept. 20, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 4.4 μg/m3 (18) | 18.0 | |
| Sept. 20, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 3.6 μg/m3 (15) | 17.0 | |
| Sept. 19, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 3.0 μg/m3 (12) | 15.0 | |
| Sept. 19, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 2.7 μg/m3 (11) | 15.0 | |
| Sept. 19, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 2.1 μg/m3 (9) | 15.0 | |
| Sept. 19, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 1.4 μg/m3 (6) | 15.0 | |
| Sept. 19, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 0.3 μg/m3 (1) | 15.0 | |
| Sept. 19, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 0.4 μg/m3 (2) | 11.0 | |
| Sept. 19, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 0.0 μg/m3 (0) | 11.0 | |
| Sept. 19, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 0.0 μg/m3 (0) | 8.0 | |
| Sept. 19, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 0.0 μg/m3 (0) | 8.0 | |
| Sept. 19, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 0.0 μg/m3 (0) | 8.0 | |
| Sept. 19, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 1.4 μg/m3 (6) | 7.0 | |
| Sept. 19, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 3.1 μg/m3 (13) | 13.0 | |
| Sept. 19, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 19, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 4.4 μg/m3 (18) | 18.0 | |
| Sept. 19, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 3.2 μg/m3 (13) | 13.0 | |
| Sept. 19, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 1.9 μg/m3 (8) | 8.0 | |
| Sept. 19, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 1.7 μg/m3 (7) | 7.0 | |
| Sept. 19, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | N/A | N/A | 0.4 μg/m3 (2) | 4.0 | |
| Sept. 19, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | N/A | N/A | 0.1 μg/m3 (0) | 4.0 | |
| Sept. 19, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 3.6 μg/m3 (15) | 15.0 | |
| Sept. 19, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | N/A | N/A | 13.8 μg/m3 (54) | 54.0 | |
| Sept. 19, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 29.5 μg/m3 (87) | 87.0 | |
| Sept. 19, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | N/A | 29.6 μg/m3 (87) | 87.0 | |
| Sept. 19, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 28.4 μg/m3 (85) | 85.0 | |
| Sept. 18, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 39.8 μg/m3 (111) | 111.0 | |
| Sept. 18, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | N/A | N/A | 37.0 μg/m3 (104) | 104.0 | |
| Sept. 18, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 33.9 μg/m3 (97) | 97.0 | |
| Sept. 18, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 31.2 μg/m3 (91) | 91.0 | |
| Sept. 18, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 37.9 μg/m3 (106) | 106.0 | |
| Sept. 18, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | N/A | 47.5 μg/m3 (130) | 130.0 | |
| Sept. 18, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 45.5 μg/m3 (125) | 125.0 | |
| Sept. 18, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 36.2 μg/m3 (102) | 102.0 | |
| Sept. 18, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.4 μg/m3 (91) | 91.0 | |
| Sept. 18, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.0 μg/m3 (95) | 95.0 | |
| Sept. 18, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 34.7 μg/m3 (98) | 98.0 | |
| Sept. 18, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.6 μg/m3 (96) | 96.0 | |
| Sept. 18, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.0 μg/m3 (95) | 95.0 | |
| Sept. 18, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 32.6 μg/m3 (94) | 94.0 | |
| Sept. 18, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 34.4 μg/m3 (98) | 98.0 | |
| Sept. 18, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | N/A | N/A | 39.6 μg/m3 (110) | 110.0 | |
| Sept. 18, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 42.2 μg/m3 (117) | 117.0 | |
| Sept. 18, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 43.2 μg/m3 (119) | 119.0 | |
| Sept. 18, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | N/A | N/A | 46.9 μg/m3 (128) | 128.0 | |
| Sept. 18, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 52.2 μg/m3 (142) | 142.0 | |
| Sept. 18, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 57.3 μg/m3 (151) | 151.0 | |
| Sept. 18, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 62.3 μg/m3 (154) | 154.0 | |
| Sept. 18, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 67.0 μg/m3 (156) | 156.0 | |
| Sept. 18, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 66.1 μg/m3 (156) | 156.0 | |
| Sept. 17, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 64.8 μg/m3 (155) | 155.0 | |
| Sept. 17, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 57.4 μg/m3 (151) | 151.0 | |
| Sept. 17, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 56.4 μg/m3 (150) | 150.0 | |
| Sept. 17, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 66.7 μg/m3 (156) | 156.0 | |
| Sept. 17, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 69.6 μg/m3 (157) | 157.0 | |
| Sept. 17, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | N/A | 74.3 μg/m3 (160) | 160.0 | |
| Sept. 17, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 74.2 μg/m3 (160) | 160.0 | |
| Sept. 17, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 63.7 μg/m3 (154) | 154.0 | |
| Sept. 17, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 56.6 μg/m3 (151) | 151.0 | |
| Sept. 17, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 53.2 μg/m3 (144) | 144.0 | |
| Sept. 17, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 53.4 μg/m3 (145) | 145.0 | |
| Sept. 17, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 51.8 μg/m3 (141) | 141.0 | |
| Sept. 17, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 49.8 μg/m3 (136) | 136.0 | |
| Sept. 17, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 45.5 μg/m3 (125) | 125.0 | |
| Sept. 17, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 44.2 μg/m3 (122) | 122.0 | |
| Sept. 17, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 41.7 μg/m3 (116) | 116.0 | |
| Sept. 17, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 41.7 μg/m3 (116) | 116.0 | |
| Sept. 17, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 45.4 μg/m3 (125) | 125.0 | |
| Sept. 17, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 44.9 μg/m3 (124) | 124.0 | |
| Sept. 17, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 41.2 μg/m3 (114) | 114.0 | |
| Sept. 17, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 41.1 μg/m3 (114) | 114.0 | |
| Sept. 17, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 48.9 μg/m3 (134) | 134.0 | |
| Sept. 17, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 44.4 μg/m3 (122) | 122.0 | |
| Sept. 17, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 41.1 μg/m3 (114) | 114.0 | |
| Sept. 16, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 49.0 μg/m3 (134) | 134.0 | |
| Sept. 16, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 54.1 μg/m3 (146) | 146.0 | |
| Sept. 16, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 53.1 μg/m3 (144) | 144.0 | |
| Sept. 16, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 54.0 μg/m3 (146) | 146.0 | |
| Sept. 16, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 52.7 μg/m3 (143) | 143.0 | |
| Sept. 16, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 59.4 μg/m3 (152) | 152.0 | |
| Sept. 16, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 68.2 μg/m3 (157) | 157.0 | |
| Sept. 16, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 61.4 μg/m3 (153) | 153.0 | |
| Sept. 16, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 50.6 μg/m3 (138) | 138.0 | |
| Sept. 16, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 58.0 μg/m3 (151) | 151.0 | |
| Sept. 16, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 52.0 μg/m3 (141) | 141.0 | |
| Sept. 16, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | N/A | N/A | 54.1 μg/m3 (146) | 146.0 | |
| Sept. 16, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 71.7 μg/m3 (159) | 159.0 | |
| Sept. 16, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 82.3 μg/m3 (164) | 164.0 | |
| Sept. 16, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 81.8 μg/m3 (164) | 164.0 | |
| Sept. 16, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 82.0 μg/m3 (164) | 164.0 | |
| Sept. 16, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 76.7 μg/m3 (161) | 161.0 | |
| Sept. 16, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 80.8 μg/m3 (163) | 163.0 | |
| Sept. 16, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 93.9 μg/m3 (170) | 170.0 | |
| Sept. 16, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 97.1 μg/m3 (172) | 172.0 | |
| Sept. 16, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 104.9 μg/m3 (176) | 176.0 | |
| Sept. 16, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 116.2 μg/m3 (182) | 182.0 | |
| Sept. 16, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 100.3 μg/m3 (174) | 174.0 | |
| Sept. 16, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 84.7 μg/m3 (165) | 165.0 | |
| Sept. 15, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 75.5 μg/m3 (161) | 161.0 | |
| Sept. 15, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 78.5 μg/m3 (162) | 162.0 | |
| Sept. 15, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 94.5 μg/m3 (171) | 171.0 | |
| Sept. 15, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 93.3 μg/m3 (170) | 170.0 | |
| Sept. 15, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 89.1 μg/m3 (168) | 168.0 | |
| Sept. 15, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | N/A | N/A | 103.2 μg/m3 (175) | 175.0 | |
| Sept. 15, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 114.8 μg/m3 (181) | 181.0 | |
| Sept. 15, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 120.0 μg/m3 (184) | 184.0 | |
| Sept. 15, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 116.3 μg/m3 (182) | 182.0 | |
| Sept. 15, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 116.7 μg/m3 (182) | 182.0 | |
| Sept. 15, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 127.8 μg/m3 (188) | 188.0 | |
| Sept. 15, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 135.2 μg/m3 (192) | 192.0 | |
| Sept. 15, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 137.6 μg/m3 (193) | 193.0 | |
| Sept. 15, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 142.9 μg/m3 (196) | 196.0 | |
| Sept. 15, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 146.2 μg/m3 (198) | 198.0 | |
| Sept. 15, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 147.9 μg/m3 (199) | 199.0 | |
| Sept. 15, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | N/A | N/A | 146.8 μg/m3 (198) | 198.0 | |
| Sept. 15, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 156.9 μg/m3 (206) | 206.0 | |
| Sept. 15, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 160.7 μg/m3 (210) | 210.0 | |
| Sept. 15, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 161.6 μg/m3 (211) | 211.0 | |
| Sept. 15, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 167.4 μg/m3 (217) | 217.0 | |
| Sept. 15, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 171.8 μg/m3 (221) | 221.0 | |
| Sept. 15, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 174.9 μg/m3 (224) | 224.0 | |
| Sept. 15, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | N/A | 23.0 | |
| Sept. 14, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | N/A | 23.0 | |
| Sept. 14, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 172.0 μg/m3 (222) | 222.0 | |
| Sept. 14, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 164.8 μg/m3 (214) | 214.0 | |
| Sept. 14, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | N/A | N/A | 12.0 | |
| Sept. 14, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | N/A | N/A | 7.0 | |
| Sept. 14, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | N/A | N/A | N/A | 5.0 | |
| Sept. 14, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | N/A | N/A | 2.0 | |
| Sept. 14, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 2.0 | |
| Sept. 14, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 114.3 μg/m3 (181) | 181.0 | |
| Sept. 14, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 108.9 μg/m3 (178) | 178.0 | |
| Sept. 14, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 117.9 μg/m3 (183) | 183.0 | |
| Sept. 14, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 100.5 μg/m3 (174) | 174.0 | |
| Sept. 14, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 98.2 μg/m3 (172) | 172.0 | |
| Sept. 14, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 99.1 μg/m3 (173) | 173.0 | |
| Sept. 14, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 92.5 μg/m3 (169) | 169.0 | |
| Sept. 14, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 102.4 μg/m3 (175) | 175.0 | |
| Sept. 14, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 115.3 μg/m3 (181) | 181.0 | |
| Sept. 14, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 120.3 μg/m3 (184) | 184.0 | |
| Sept. 14, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 128.4 μg/m3 (188) | 188.0 | |
| Sept. 14, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 138.7 μg/m3 (194) | 194.0 | |
| Sept. 14, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 148.2 μg/m3 (199) | 199.0 | |
| Sept. 14, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 152.5 μg/m3 (202) | 202.0 | |
| Sept. 14, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 154.4 μg/m3 (204) | 204.0 | |
| Sept. 14, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 156.2 μg/m3 (206) | 206.0 | |
| Sept. 13, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 158.5 μg/m3 (208) | 208.0 | |
| Sept. 13, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 162.8 μg/m3 (212) | 212.0 | |
| Sept. 13, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 163.4 μg/m3 (213) | 213.0 | |
| Sept. 13, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 157.9 μg/m3 (207) | 207.0 | |
| Sept. 13, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 151.1 μg/m3 (201) | 201.0 | |
| Sept. 13, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | N/A | 143.8 μg/m3 (196) | 196.0 | |
| Sept. 13, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | N/A | N/A | 138.2 μg/m3 (194) | 194.0 | |
| Sept. 13, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | N/A | 138.8 μg/m3 (194) | 194.0 |