Harrisburg (Bobali Dr) PA, US: 40.246992, -76.846988
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 16, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 22.3 μg/m3 (73) | 73.0 | |
| Jan. 16, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 32.1 μg/m3 (94) | 94.0 | |
| Jan. 15, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 33.6 μg/m3 (97) | 97.0 | |
| Jan. 15, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 34.7 μg/m3 (99) | 99.0 | |
| Jan. 15, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 34.0 μg/m3 (98) | 98.0 | |
| Jan. 15, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 23.5 μg/m3 (75) | 75.0 | |
| Jan. 15, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 38.0 μg/m3 (108) | 108.0 | |
| Jan. 15, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | 40.3 μg/m3 (113) | 113.0 | |
| Jan. 15, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 43.2 μg/m3 (120) | 120.0 | |
| Jan. 15, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (8) | N/A | N/A | 37.9 μg/m3 (107) | 107.0 | |
| Jan. 15, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | N/A | 34.2 μg/m3 (98) | 98.0 | |
| Jan. 15, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 33.4 μg/m3 (96) | 96.0 | |
| Jan. 15, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 33.9 μg/m3 (97) | 97.0 | |
| Jan. 15, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 34.3 μg/m3 (98) | 98.0 | |
| Jan. 15, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 35.2 μg/m3 (100) | 100.0 | |
| Jan. 15, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 35.4 μg/m3 (100) | 100.0 | |
| Jan. 15, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 37.2 μg/m3 (106) | 106.0 | |
| Jan. 15, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 37.5 μg/m3 (106) | 106.0 | |
| Jan. 15, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 37.9 μg/m3 (107) | 107.0 | |
| Jan. 15, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 36.7 μg/m3 (104) | 104.0 | |
| Jan. 15, 2021, 5 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 | |
| Jan. 15, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.8 μg/m3 (85) | 85.0 | |
| Jan. 15, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.6 μg/m3 (86) | 86.0 | |
| Jan. 15, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.6 μg/m3 (84) | 84.0 | |
| Jan. 15, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.6 μg/m3 (76) | 76.0 | |
| Jan. 15, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 25.5 μg/m3 (80) | 80.0 | |
| Jan. 14, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 20.1 μg/m3 (68) | 68.0 | |
| Jan. 14, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 19.1 μg/m3 (66) | 66.0 | |
| Jan. 14, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | 20.2 μg/m3 (69) | 69.0 | |
| Jan. 14, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 18.4 μg/m3 (65) | 65.0 | |
| Jan. 14, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 19.9 μg/m3 (68) | 68.0 | |
| Jan. 14, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | N/A | 22.0 μg/m3 (72) | 72.0 | |
| Jan. 14, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | 24.2 μg/m3 (77) | 77.0 | |
| Jan. 14, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (8) | N/A | N/A | 30.9 μg/m3 (91) | 91.0 | |
| Jan. 14, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 35.3 μg/m3 (100) | 100.0 | |
| Jan. 14, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 36.5 μg/m3 (104) | 104.0 | |
| Jan. 14, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 35.7 μg/m3 (102) | 102.0 | |
| Jan. 14, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 35.0 μg/m3 (100) | 100.0 | |
| Jan. 14, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.6 μg/m3 (97) | 97.0 | |
| Jan. 14, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.5 μg/m3 (97) | 97.0 | |
| Jan. 14, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.3 μg/m3 (92) | 92.0 | |
| Jan. 14, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.7 μg/m3 (89) | 89.0 | |
| Jan. 14, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 30.4 μg/m3 (90) | 90.0 | |
| Jan. 14, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.1 μg/m3 (83) | 83.0 | |
| Jan. 14, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.2 μg/m3 (83) | 83.0 | |
| Jan. 14, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 25.1 μg/m3 (79) | 79.0 | |
| Jan. 14, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.4 μg/m3 (84) | 84.0 | |
| Jan. 14, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 25.0 μg/m3 (79) | 79.0 | |
| Jan. 14, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.6 μg/m3 (76) | 76.0 | |
| Jan. 14, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 21.3 μg/m3 (71) | 71.0 | |
| Jan. 13, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (10) | N/A | N/A | 16.3 μg/m3 (60) | 60.0 | |
| Jan. 13, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | N/A | 19.5 μg/m3 (67) | 67.0 | |
| Jan. 13, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 18.5 μg/m3 (65) | 65.0 | |
| Jan. 13, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | N/A | 18.6 μg/m3 (65) | 65.0 | |
| Jan. 13, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 19.8 μg/m3 (68) | 68.0 | |
| Jan. 13, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 20.4 μg/m3 (69) | 69.0 | |
| Jan. 13, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 22.3 μg/m3 (73) | 73.0 | |
| Jan. 13, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 21.2 μg/m3 (71) | 71.0 | |
| Jan. 13, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | 24.2 μg/m3 (77) | 77.0 | |
| Jan. 13, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | N/A | 24.2 μg/m3 (77) | 77.0 | |
| Jan. 13, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 24.5 μg/m3 (78) | 78.0 | |
| Jan. 13, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 22.1 μg/m3 (73) | 73.0 | |
| Jan. 13, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 21.7 μg/m3 (72) | 72.0 | |
| Jan. 13, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 21.1 μg/m3 (70) | 70.0 | |
| Jan. 13, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 21.0 μg/m3 (70) | 70.0 | |
| Jan. 13, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 21.5 μg/m3 (71) | 71.0 | |
| Jan. 13, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 22.6 μg/m3 (74) | 74.0 | |
| Jan. 13, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (79) | 79.0 | |
| Jan. 13, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 25.5 μg/m3 (80) | 80.0 | |
| Jan. 13, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 27.1 μg/m3 (83) | 83.0 | |
| Jan. 13, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.4 μg/m3 (86) | 86.0 | |
| Jan. 13, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.5 μg/m3 (84) | 84.0 | |
| Jan. 13, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.1 μg/m3 (83) | 83.0 | |
| Jan. 13, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 25.7 μg/m3 (80) | 80.0 | |
| Jan. 12, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 24.8 μg/m3 (78) | 78.0 | |
| Jan. 12, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 23.0 μg/m3 (74) | 74.0 | |
| Jan. 12, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 22.6 μg/m3 (74) | 74.0 | |
| Jan. 12, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 23.4 μg/m3 (75) | 75.0 | |
| Jan. 12, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 26.2 μg/m3 (81) | 81.0 | |
| Jan. 12, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | N/A | 25.5 μg/m3 (80) | 80.0 | |
| Jan. 12, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 24.8 μg/m3 (78) | 78.0 | |
| Jan. 12, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 24.9 μg/m3 (78) | 78.0 | |
| Jan. 12, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | 27.6 μg/m3 (84) | 84.0 | |
| Jan. 12, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (8) | N/A | N/A | 29.8 μg/m3 (89) | 89.0 | |
| Jan. 12, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 32.4 μg/m3 (94) | 94.0 | |
| Jan. 12, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.7 μg/m3 (97) | 97.0 | |
| Jan. 12, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 34.5 μg/m3 (99) | 99.0 | |
| Jan. 12, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 35.2 μg/m3 (100) | 100.0 | |
| Jan. 12, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 35.7 μg/m3 (102) | 102.0 | |
| Jan. 12, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 35.2 μg/m3 (100) | 100.0 | |
| Jan. 12, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 35.5 μg/m3 (101) | 101.0 | |
| Jan. 12, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.6 μg/m3 (97) | 97.0 | |
| Jan. 12, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 34.4 μg/m3 (98) | 98.0 | |
| Jan. 12, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 36.2 μg/m3 (103) | 103.0 | |
| Jan. 12, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 37.8 μg/m3 (107) | 107.0 | |
| Jan. 12, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 μg/m3 (105) | 105.0 | |
| Jan. 12, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 37.3 μg/m3 (106) | 106.0 | |
| Jan. 12, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 34.7 μg/m3 (99) | 99.0 | |
| Jan. 11, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.9 μg/m3 (97) | 97.0 | |
| Jan. 11, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 32.4 μg/m3 (94) | 94.0 | |
| Jan. 11, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 29.5 μg/m3 (88) | 88.0 | |
| Jan. 11, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 27.7 μg/m3 (84) | 84.0 | |
| Jan. 11, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | 25.8 μg/m3 (80) | 80.0 | |
| Jan. 11, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 24.7 μg/m3 (78) | 78.0 | |
| Jan. 11, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 27.2 μg/m3 (83) | 83.0 | |
| Jan. 11, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | 28.2 μg/m3 (85) | 85.0 | |
| Jan. 11, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 28.2 μg/m3 (85) | 85.0 | |
| Jan. 11, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 25.4 μg/m3 (79) | 79.0 | |
| Jan. 11, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 24.1 μg/m3 (77) | 77.0 | |
| Jan. 11, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.6 μg/m3 (69) | 69.0 | |
| Jan. 11, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.1 μg/m3 (66) | 66.0 | |
| Jan. 11, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.1 μg/m3 (70) | 70.0 | |
| Jan. 11, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.1 μg/m3 (68) | 68.0 | |
| Jan. 11, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.3 μg/m3 (62) | 62.0 | |
| Jan. 11, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.3 μg/m3 (62) | 62.0 | |
| Jan. 11, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.3 μg/m3 (67) | 67.0 | |
| Jan. 11, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.6 μg/m3 (61) | 61.0 | |
| Jan. 11, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.5 μg/m3 (61) | 61.0 | |
| Jan. 11, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| Jan. 11, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.9 μg/m3 (59) | 59.0 | |
| Jan. 11, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.7 μg/m3 (59) | 59.0 | |
| Jan. 11, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 12.7 μg/m3 (53) | 53.0 | |
| Jan. 10, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 10.6 μg/m3 (45) | 45.0 | |
| Jan. 10, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 7.7 μg/m3 (33) | 33.0 | |
| Jan. 10, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 6.4 μg/m3 (27) | 31.0 | |
| Jan. 10, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 5.9 μg/m3 (25) | 35.0 | |
| Jan. 10, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 5.9 μg/m3 (25) | 35.0 | |
| Jan. 10, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 6.5 μg/m3 (28) | 35.0 | |
| Jan. 10, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 7.3 μg/m3 (31) | 34.0 | |
| Jan. 10, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 7.6 μg/m3 (32) | 32.0 | |
| Jan. 10, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 7.5 μg/m3 (32) | 32.0 | |
| Jan. 10, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | 7.4 μg/m3 (31) | 31.0 | |
| Jan. 10, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 7.3 μg/m3 (31) | 31.0 | |
| Jan. 10, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 10, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 6.6 μg/m3 (28) | 28.0 | |
| Jan. 10, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| Jan. 10, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 5.3 μg/m3 (23) | 26.0 | |
| Jan. 10, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | N/A | 4.5 μg/m3 (19) | 27.0 | |
| Jan. 10, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 3.8 μg/m3 (16) | 28.0 | |
| Jan. 10, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.7 μg/m3 (16) | 16.0 | |
| Jan. 10, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 3.5 μg/m3 (15) | 28.0 | |
| Jan. 10, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | 3.3 μg/m3 (14) | 30.0 | |
| Jan. 10, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 3.1 μg/m3 (13) | 33.0 | |
| Jan. 10, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 3.2 μg/m3 (14) | 33.0 | |
| Jan. 10, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 3.6 μg/m3 (16) | 31.0 | |
| Jan. 10, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 3.4 μg/m3 (15) | 32.0 | |
| Jan. 9, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 3.2 μg/m3 (14) | 32.0 | |
| Jan. 9, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 2.9 μg/m3 (13) | 35.0 | |
| Jan. 9, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 3.0 μg/m3 (13) | 36.0 | |
| Jan. 9, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 3.1 μg/m3 (13) | 36.0 | |
| Jan. 9, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 2.9 μg/m3 (13) | 37.0 | |
| Jan. 9, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 2.8 μg/m3 (12) | 37.0 | |
| Jan. 9, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 3.2 μg/m3 (14) | 36.0 | |
| Jan. 9, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 3.6 μg/m3 (16) | 33.0 | |
| Jan. 9, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 3.7 μg/m3 (16) | 32.0 | |
| Jan. 9, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 4.4 μg/m3 (19) | 29.0 | |
| Jan. 9, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 4.8 μg/m3 (20) | 28.0 | |
| Jan. 9, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | N/A | 5.4 μg/m3 (23) | 27.0 | |
| Jan. 9, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 6.0 μg/m3 (25) | 26.0 | |
| Jan. 9, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 6.5 μg/m3 (28) | 28.0 | |
| Jan. 9, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | N/A | 6.1 μg/m3 (26) | 27.0 | |
| Jan. 9, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 6.6 μg/m3 (28) | 28.0 | |
| Jan. 9, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 7.7 μg/m3 (33) | 33.0 | |
| Jan. 9, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.6 μg/m3 (32) | 32.0 | |
| Jan. 9, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 7.4 μg/m3 (31) | 31.0 | |
| Jan. 9, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 6.8 μg/m3 (29) | 29.0 | |
| Jan. 9, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 6.1 μg/m3 (26) | 26.0 | |
| Jan. 9, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 6.3 μg/m3 (27) | 27.0 |