State College (Overlook Heights) PA, US: 40.8114, -77.8769
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 29, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 3.0 μg/m3 (12) | 26.0 | |
| Jan. 29, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 3.1 μg/m3 (13) | 26.0 | |
| Jan. 29, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 3.2 μg/m3 (13) | 26.0 | |
| Jan. 29, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.9 μg/m3 (12) | 12.0 | |
| Jan. 29, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 2.3 μg/m3 (10) | 27.0 | |
| Jan. 29, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 1.3 μg/m3 (5) | 26.0 | |
| Jan. 29, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 0.9 μg/m3 (4) | 26.0 | |
| Jan. 29, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 1.0 μg/m3 (4) | 26.0 | |
| Jan. 29, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 1.6 μg/m3 (7) | 25.0 | |
| Jan. 29, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 1.7 μg/m3 (7) | 25.0 | |
| Jan. 28, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 1.3 μg/m3 (5) | 27.0 | |
| Jan. 28, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 0.9 μg/m3 (4) | 28.0 | |
| Jan. 28, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 0.6 μg/m3 (2) | 29.0 | |
| Jan. 28, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 0.7 μg/m3 (3) | 28.0 | |
| Jan. 28, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 1.6 μg/m3 (7) | 27.0 | |
| Jan. 28, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 2.2 μg/m3 (9) | 25.0 | |
| Jan. 28, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 2.1 μg/m3 (9) | 25.0 | |
| Jan. 28, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 3.0 μg/m3 (12) | 25.0 | |
| Jan. 28, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | 3.2 μg/m3 (13) | 23.0 | |
| Jan. 28, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 3.1 μg/m3 (13) | 22.0 | |
| Jan. 28, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 3.2 μg/m3 (13) | 22.0 | |
| Jan. 28, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 3.1 μg/m3 (13) | 21.0 | |
| Jan. 28, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | 2.3 μg/m3 (10) | 23.0 | |
| Jan. 28, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 2.5 μg/m3 (10) | 24.0 | |
| Jan. 28, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 2.5 μg/m3 (10) | 24.0 | |
| Jan. 28, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 2.1 μg/m3 (9) | 22.0 | |
| Jan. 28, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 2.0 μg/m3 (8) | 21.0 | |
| Jan. 28, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.5 μg/m3 (10) | 10.0 | |
| Jan. 28, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 3.2 μg/m3 (13) | 21.0 | |
| Jan. 28, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 2.9 μg/m3 (12) | 21.0 | |
| Jan. 28, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 2.4 μg/m3 (10) | 21.0 | |
| Jan. 28, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 2.5 μg/m3 (10) | 18.0 | |
| Jan. 28, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 2.9 μg/m3 (12) | 18.0 | |
| Jan. 28, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 3.2 μg/m3 (13) | 18.0 | |
| Jan. 27, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 3.2 μg/m3 (13) | 17.0 | |
| Jan. 27, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 2.8 μg/m3 (12) | 17.0 | |
| Jan. 27, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 3.2 μg/m3 (13) | 17.0 | |
| Jan. 27, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 27, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 3.8 μg/m3 (16) | 17.0 | |
| Jan. 27, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 3.5 μg/m3 (15) | 17.0 | |
| Jan. 27, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 3.4 μg/m3 (14) | 17.0 | |
| Jan. 27, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 3.6 μg/m3 (15) | 16.0 | |
| Jan. 27, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 3.6 μg/m3 (15) | 16.0 | |
| Jan. 27, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 5.1 μg/m3 (21) | 21.0 | |
| Jan. 27, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 4.9 μg/m3 (20) | 20.0 | |
| Jan. 27, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 27, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| Jan. 27, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 5.6 μg/m3 (23) | 23.0 | |
| Jan. 27, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 5.6 μg/m3 (23) | 23.0 | |
| Jan. 27, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 4.8 μg/m3 (20) | 20.0 | |
| Jan. 27, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 4.9 μg/m3 (20) | 20.0 | |
| Jan. 27, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.4 μg/m3 (23) | 23.0 | |
| Jan. 27, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 5.6 μg/m3 (23) | 23.0 | |
| Jan. 27, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Jan. 27, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 3.9 μg/m3 (16) | 18.0 | |
| Jan. 27, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| Jan. 27, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 5.5 μg/m3 (23) | 23.0 | |
| Jan. 27, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 5.3 μg/m3 (22) | 22.0 | |
| Jan. 26, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 5.6 μg/m3 (23) | 23.0 | |
| Jan. 26, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 5.6 μg/m3 (23) | 23.0 | |
| Jan. 26, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| Jan. 26, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 5.1 μg/m3 (21) | 21.0 | |
| Jan. 26, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 4.1 μg/m3 (17) | 17.0 | |
| Jan. 26, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 3.8 μg/m3 (16) | 18.0 | |
| Jan. 26, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 26, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 3.9 μg/m3 (16) | 16.0 | |
| Jan. 26, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 3.7 μg/m3 (15) | 16.0 | |
| Jan. 26, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 3.6 μg/m3 (15) | 16.0 | |
| Jan. 26, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 3.3 μg/m3 (14) | 15.0 | |
| Jan. 26, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 3.5 μg/m3 (15) | 15.0 | |
| Jan. 26, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 4.1 μg/m3 (17) | 17.0 | |
| Jan. 26, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 26, 2020, 9 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 | |
| Jan. 26, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 26, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 4.6 μg/m3 (19) | 19.0 | |
| Jan. 26, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.8 μg/m3 (24) | 24.0 | |
| Jan. 26, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 5.6 μg/m3 (23) | 23.0 | |
| Jan. 26, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 5.3 μg/m3 (22) | 22.0 | |
| Jan. 26, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 5.1 μg/m3 (21) | 21.0 | |
| Jan. 26, 2020, 2 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 | |
| Jan. 26, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 5.8 μg/m3 (24) | 24.0 | |
| Jan. 26, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 6.1 μg/m3 (25) | 25.0 | |
| Jan. 25, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 7.2 μg/m3 (30) | 30.0 | |
| Jan. 25, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 5.6 μg/m3 (23) | 23.0 | |
| Jan. 25, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Jan. 25, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 6.7 μg/m3 (28) | 28.0 | |
| Jan. 25, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| Jan. 25, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 6.7 μg/m3 (28) | 28.0 | |
| Jan. 25, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 7.1 μg/m3 (30) | 30.0 | |
| Jan. 25, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 4.8 μg/m3 (20) | 20.0 | |
| Jan. 25, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 4.6 μg/m3 (19) | 19.0 | |
| Jan. 25, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 4.9 μg/m3 (20) | 20.0 | |
| Jan. 25, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 3.7 μg/m3 (15) | 17.0 | |
| Jan. 25, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 2.7 μg/m3 (11) | 18.0 | |
| Jan. 25, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 4.0 μg/m3 (17) | 19.0 | |
| Jan. 25, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 6.4 μg/m3 (27) | 27.0 | |
| Jan. 25, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 25, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | 6.6 μg/m3 (28) | 28.0 | |
| Jan. 25, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 6.8 μg/m3 (28) | 28.0 | |
| Jan. 25, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.5 μg/m3 (27) | 27.0 | |
| Jan. 25, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 6.4 μg/m3 (27) | 27.0 | |
| Jan. 25, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 6.1 μg/m3 (25) | 26.0 | |
| Jan. 25, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 5.7 μg/m3 (24) | 25.0 | |
| Jan. 25, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 9.2 μg/m3 (38) | 38.0 | |
| Jan. 25, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 25, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 16.4 μg/m3 (59) | 59.0 | |
| Jan. 24, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 19.2 μg/m3 (65) | 65.0 | |
| Jan. 24, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 15.4 μg/m3 (57) | 57.0 | |
| Jan. 24, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 14.4 μg/m3 (55) | 55.0 | |
| Jan. 24, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 18.0 μg/m3 (63) | 63.0 | |
| Jan. 24, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 26.2 μg/m3 (80) | 80.0 | |
| Jan. 24, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 30.6 μg/m3 (90) | 90.0 | |
| Jan. 24, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 42.0 μg/m3 (116) | 116.0 | |
| Jan. 24, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 48.2 μg/m3 (132) | 132.0 | |
| Jan. 24, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 45.8 μg/m3 (126) | 126.0 | |
| Jan. 24, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 50.3 μg/m3 (137) | 137.0 | |
| Jan. 24, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 48.8 μg/m3 (133) | 133.0 | |
| Jan. 24, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 42.9 μg/m3 (118) | 118.0 | |
| Jan. 24, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 40.5 μg/m3 (112) | 112.0 | |
| Jan. 24, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 39.3 μg/m3 (110) | 110.0 | |
| Jan. 24, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 36.1 μg/m3 (102) | 102.0 | |
| Jan. 24, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 33.8 μg/m3 (96) | 96.0 | |
| Jan. 24, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 34.6 μg/m3 (98) | 98.0 | |
| Jan. 24, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.7 μg/m3 (96) | 96.0 | |
| Jan. 24, 2020, 5 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 (98) | 98.0 | |
| Jan. 24, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 34.9 μg/m3 (99) | 99.0 | |
| Jan. 24, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 36.5 μg/m3 (102) | 102.0 | |
| Jan. 24, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 36.7 μg/m3 (103) | 103.0 | |
| Jan. 24, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 37.4 μg/m3 (105) | 105.0 | |
| Jan. 24, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 36.8 μg/m3 (103) | 103.0 | |
| Jan. 23, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 35.9 μg/m3 (101) | 101.0 | |
| Jan. 23, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 31.9 μg/m3 (92) | 92.0 | |
| Jan. 23, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 19.1 μg/m3 (65) | 65.0 | |
| Jan. 23, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 18.2 μg/m3 (63) | 63.0 | |
| Jan. 23, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 18.6 μg/m3 (64) | 64.0 | |
| Jan. 23, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 27.7 μg/m3 (83) | 83.0 | |
| Jan. 23, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 31.2 μg/m3 (91) | 91.0 | |
| Jan. 23, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 33.3 μg/m3 (95) | 95.0 | |
| Jan. 23, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 32.9 μg/m3 (94) | 94.0 | |
| Jan. 23, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | N/A | 36.0 μg/m3 (101) | 101.0 | |
| Jan. 23, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 53.9 μg/m3 (146) | 146.0 | |
| Jan. 23, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 26.9 μg/m3 (82) | 82.0 | |
| Jan. 23, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 25.2 μg/m3 (78) | 78.0 | |
| Jan. 23, 2020, 10 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 (78) | 78.0 | |
| Jan. 23, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.3 μg/m3 (80) | 80.0 | |
| Jan. 23, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 27.9 μg/m3 (84) | 84.0 | |
| Jan. 23, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 23.1 μg/m3 (74) | 74.0 | |
| Jan. 23, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.1 μg/m3 (69) | 69.0 | |
| Jan. 23, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 20.2 μg/m3 (67) | 67.0 | |
| Jan. 23, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 21.0 μg/m3 (69) | 69.0 | |
| Jan. 23, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 21.9 μg/m3 (71) | 71.0 | |
| Jan. 23, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 27.0 μg/m3 (82) | 82.0 | |
| Jan. 23, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 23.8 μg/m3 (75) | 75.0 | |
| Jan. 23, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 21.1 μg/m3 (69) | 69.0 | |
| Jan. 22, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 18.1 μg/m3 (63) | 63.0 | |
| Jan. 22, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 12.1 μg/m3 (50) | 50.0 | |
| Jan. 22, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 9.1 μg/m3 (38) | 38.0 | |
| Jan. 22, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 8.7 μg/m3 (36) | 36.0 | |
| Jan. 22, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 8.3 μg/m3 (35) | 35.0 | |
| Jan. 22, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 9.6 μg/m3 (40) | 40.0 | |
| Jan. 22, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 10.9 μg/m3 (45) | 45.0 | |
| Jan. 22, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 11.8 μg/m3 (49) | 49.0 | |
| Jan. 22, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 11.9 μg/m3 (50) | 50.0 | |
| Jan. 22, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 15.5 μg/m3 (57) | 57.0 | |
| Jan. 22, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 20.2 μg/m3 (67) | 67.0 | |
| Jan. 22, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | N/A | 15.4 μg/m3 (57) | 57.0 | |
| Jan. 22, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 15.6 μg/m3 (58) | 58.0 | |
| Jan. 22, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 11.8 μg/m3 (49) | 49.0 |