Chandler AZ, US: 33.299, -111.8843
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 19, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | 0.2 ppb (2) | 9.0 μg/m3 (8) | N/A | 19.0 | |
| Jan. 19, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 11.0 | |
| Jan. 19, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | 0.5 ppb (6) | 10.0 μg/m3 (9) | N/A | 9.0 | |
| Jan. 19, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | 0.3 ppb (3) | 8.0 μg/m3 (7) | N/A | 10.0 | |
| Jan. 19, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | 0.2 ppb (2) | 5.0 μg/m3 (5) | N/A | 19.0 | |
| Jan. 19, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | 0.2 ppb (2) | 3.0 μg/m3 (3) | N/A | 24.0 | |
| Jan. 19, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | 0.2 ppb (2) | 6.0 μg/m3 (5) | N/A | 18.0 | |
| Jan. 19, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.3 ppb (3) | 6.0 μg/m3 (5) | N/A | 18.0 | |
| Jan. 19, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 17.0 | |
| Jan. 19, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.6 ppb (7) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 19, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.7 ppb (8) | 26.0 μg/m3 (24) | N/A | 24.0 | |
| Jan. 19, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.5 ppb (6) | 23.0 μg/m3 (21) | N/A | 21.0 | |
| Jan. 19, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | 0.5 ppb (6) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 19, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | 0.4 ppb (4) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 19, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.3 ppb (3) | 14.0 μg/m3 (13) | N/A | 22.0 | |
| Jan. 19, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | 0.2 ppb (2) | 12.0 μg/m3 (11) | N/A | 28.0 | |
| Jan. 18, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | 0.2 ppb (2) | 12.0 μg/m3 (11) | N/A | 30.0 | |
| Jan. 18, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | 0.2 ppb (2) | 13.0 μg/m3 (12) | N/A | 31.0 | |
| Jan. 18, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | 0.2 ppb (2) | 10.0 μg/m3 (9) | N/A | 32.0 | |
| Jan. 18, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | 0.2 ppb (2) | 8.0 μg/m3 (7) | N/A | 30.0 | |
| Jan. 18, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | 0.2 ppb (2) | 10.0 μg/m3 (9) | N/A | 25.0 | |
| Jan. 18, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.2 ppb (2) | 11.0 μg/m3 (10) | N/A | 18.0 | |
| Jan. 18, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | 0.2 ppb (2) | 13.0 μg/m3 (12) | N/A | 15.0 | |
| Jan. 18, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | 0.4 ppb (4) | 21.0 μg/m3 (19) | N/A | 19.0 | |
| Jan. 18, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 1.1 ppb (12) | N/A | N/A | 12.0 | |
| Jan. 18, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 μg/m3 (32) | N/A | 32.0 | |
| Jan. 18, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.4 ppb (4) | 28.0 μg/m3 (25) | N/A | 25.0 | |
| Jan. 18, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.5 ppb (6) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 18, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.3 ppb (3) | 16.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 18, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | 0.3 ppb (3) | 16.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 18, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | 0.3 ppb (3) | 18.0 μg/m3 (16) | N/A | 16.0 | |
| Jan. 18, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | 0.3 ppb (3) | 23.0 μg/m3 (21) | N/A | 21.0 | |
| Jan. 18, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | 0.3 ppb (3) | 21.0 μg/m3 (19) | N/A | 19.0 | |
| Jan. 18, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | 0.3 ppb (3) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 18, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | 0.3 ppb (3) | 17.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 18, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | 0.3 ppb (3) | 22.0 μg/m3 (20) | N/A | 20.0 | |
| Jan. 18, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.4 ppb (4) | 36.0 μg/m3 (33) | N/A | 33.0 | |
| Jan. 18, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.4 ppb (4) | 22.0 μg/m3 (20) | N/A | 20.0 | |
| Jan. 18, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.6 ppb (7) | 22.0 μg/m3 (20) | N/A | 20.0 | |
| Jan. 18, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | 0.4 ppb (4) | 22.0 μg/m3 (20) | N/A | 20.0 | |
| Jan. 17, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | 0.3 ppb (3) | 19.0 μg/m3 (17) | N/A | 20.0 | |
| Jan. 17, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.3 ppb (3) | 16.0 μg/m3 (15) | N/A | 22.0 | |
| Jan. 17, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.2 ppb (2) | 17.0 μg/m3 (15) | N/A | 22.0 | |
| Jan. 17, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | 0.2 ppb (2) | 14.0 μg/m3 (13) | N/A | 21.0 | |
| Jan. 17, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | 0.2 ppb (2) | 8.0 μg/m3 (7) | N/A | 20.0 | |
| Jan. 17, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.2 ppb (2) | 9.0 μg/m3 (8) | N/A | 18.0 | |
| Jan. 17, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | 0.3 ppb (3) | 18.0 μg/m3 (16) | N/A | 16.0 | |
| Jan. 17, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.4 ppb (4) | 24.0 μg/m3 (22) | N/A | 22.0 | |
| Jan. 17, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.6 ppb (7) | 22.0 μg/m3 (20) | N/A | 20.0 | |
| Jan. 17, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.4 ppb (4) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 17, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.3 ppb (3) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 17, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.6 ppb (7) | 16.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 17, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | 0.4 ppb (4) | 8.0 μg/m3 (7) | N/A | 7.0 | |
| Jan. 17, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 9.0 | |
| Jan. 17, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 6.0 | |
| Jan. 17, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | 0.4 ppb (4) | 11.0 μg/m3 (10) | N/A | 10.0 | |
| Jan. 17, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.5 ppb (6) | 14.0 μg/m3 (13) | N/A | 13.0 | |
| Jan. 16, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | 0.2 ppb (2) | 8.0 μg/m3 (7) | N/A | 28.0 | |
| Jan. 16, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 28.0 | |
| Jan. 16, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | 0.2 ppb (2) | 8.0 μg/m3 (7) | N/A | 26.0 | |
| Jan. 16, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.2 ppb (2) | 6.0 μg/m3 (5) | N/A | 23.0 | |
| Jan. 16, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 20.0 | |
| Jan. 16, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | 0.4 ppb (4) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 16, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | 0.5 ppb (6) | 21.0 μg/m3 (19) | N/A | 19.0 | |
| Jan. 16, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | 0.5 ppb (6) | 23.0 μg/m3 (21) | N/A | 21.0 | |
| Jan. 16, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.9 ppb (10) | 27.0 μg/m3 (25) | N/A | 25.0 | |
| Jan. 16, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.7 ppb (8) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 16, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.6 ppb (7) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 16, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.5 ppb (6) | 11.0 μg/m3 (10) | N/A | 10.0 | |
| Jan. 16, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.4 ppb (4) | 9.0 μg/m3 (8) | N/A | 8.0 | |
| Jan. 16, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.4 ppb (4) | 9.0 μg/m3 (8) | N/A | 8.0 | |
| Jan. 16, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.4 ppb (4) | 11.0 μg/m3 (10) | N/A | 10.0 | |
| Jan. 16, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.4 ppb (4) | 14.0 μg/m3 (13) | N/A | 13.0 | |
| Jan. 16, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.4 ppb (4) | 11.0 μg/m3 (10) | N/A | 10.0 | |
| Jan. 16, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | 0.4 ppb (4) | 10.0 μg/m3 (9) | N/A | 9.0 | |
| Jan. 16, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | 0.3 ppb (3) | 11.0 μg/m3 (10) | N/A | 10.0 | |
| Jan. 16, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.4 ppb (4) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 16, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.4 ppb (4) | 14.0 μg/m3 (13) | N/A | 13.0 | |
| Jan. 16, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.4 ppb (4) | 17.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 16, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | 0.4 ppb (4) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 16, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | 0.3 ppb (3) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 15, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | 0.2 ppb (2) | 12.0 μg/m3 (11) | N/A | 18.0 | |
| Jan. 15, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | 0.2 ppb (2) | 12.0 μg/m3 (11) | N/A | 18.0 | |
| Jan. 15, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.2 ppb (2) | 14.0 μg/m3 (13) | N/A | 18.0 | |
| Jan. 15, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | 0.2 ppb (2) | 12.0 μg/m3 (11) | N/A | 18.0 | |
| Jan. 15, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | 0.2 ppb (2) | 9.0 μg/m3 (8) | N/A | 19.0 | |
| Jan. 15, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | 0.2 ppb (2) | 8.0 μg/m3 (7) | N/A | 18.0 | |
| Jan. 15, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.3 ppb (3) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 15, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | 0.4 ppb (4) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 15, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | 18.0 μg/m3 (16) | N/A | 16.0 | |
| Jan. 15, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.5 ppb (6) | 22.0 μg/m3 (20) | N/A | 20.0 | |
| Jan. 15, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.4 ppb (4) | 17.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 15, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.3 ppb (3) | 12.0 μg/m3 (11) | N/A | 11.0 | |
| Jan. 15, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.4 ppb (4) | 12.0 μg/m3 (11) | N/A | 11.0 | |
| Jan. 15, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.4 ppb (4) | 10.0 μg/m3 (9) | N/A | 9.0 | |
| Jan. 15, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | 0.4 ppb (4) | 11.0 μg/m3 (10) | N/A | 10.0 | |
| Jan. 15, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.6 ppb (7) | 17.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 15, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.6 ppb (7) | 21.0 μg/m3 (19) | N/A | 19.0 | |
| Jan. 15, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.7 ppb (8) | 38.0 μg/m3 (35) | N/A | 35.0 | |
| Jan. 15, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.6 ppb (7) | 27.0 μg/m3 (25) | N/A | 25.0 | |
| Jan. 15, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | 0.5 ppb (6) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 15, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | 0.5 ppb (6) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 15, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | 0.5 ppb (6) | 17.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 15, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | 0.4 ppb (4) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 15, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | 0.4 ppb (4) | 10.0 μg/m3 (9) | N/A | 19.0 | |
| Jan. 14, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 25.0 | |
| Jan. 14, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 26.0 | |
| Jan. 14, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | 0.3 ppb (3) | 6.0 μg/m3 (5) | N/A | 27.0 | |
| Jan. 14, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 25.0 | |
| Jan. 14, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 22.0 | |
| Jan. 14, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.3 ppb (3) | 8.0 μg/m3 (7) | N/A | 18.0 | |
| Jan. 14, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.4 ppb (4) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 14, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.6 ppb (7) | 24.0 μg/m3 (22) | N/A | 22.0 | |
| Jan. 14, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.8 ppb (9) | 26.0 μg/m3 (24) | N/A | 24.0 | |
| Jan. 14, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.6 ppb (7) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 14, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.4 ppb (4) | 11.0 μg/m3 (10) | N/A | 10.0 | |
| Jan. 14, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 12.0 | |
| Jan. 14, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | 0.3 ppb (3) | 6.0 μg/m3 (5) | N/A | 14.0 | |
| Jan. 14, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | 0.3 ppb (3) | 4.0 μg/m3 (4) | N/A | 15.0 | |
| Jan. 14, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | 0.3 ppb (3) | 8.0 μg/m3 (7) | N/A | 13.0 | |
| Jan. 14, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | 0.4 ppb (4) | 10.0 μg/m3 (9) | N/A | 12.0 | |
| Jan. 14, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.5 ppb (6) | 13.0 μg/m3 (12) | N/A | 12.0 | |
| Jan. 14, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.6 ppb (7) | 22.0 μg/m3 (20) | N/A | 20.0 | |
| Jan. 14, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.9 ppb (10) | 30.0 μg/m3 (27) | N/A | 27.0 | |
| Jan. 14, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.7 ppb (8) | 21.0 μg/m3 (19) | N/A | 19.0 | |
| Jan. 14, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | 0.6 ppb (7) | 21.0 μg/m3 (19) | N/A | 19.0 | |
| Jan. 14, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | 0.4 ppb (4) | 14.0 μg/m3 (13) | N/A | 18.0 | |
| Jan. 14, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | 0.3 ppb (3) | 12.0 μg/m3 (11) | N/A | 24.0 | |
| Jan. 14, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 30.0 | |
| Jan. 13, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 32.0 | |
| Jan. 13, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | 0.3 ppb (3) | 8.0 μg/m3 (7) | N/A | 32.0 | |
| Jan. 13, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 32.0 | |
| Jan. 13, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 31.0 | |
| Jan. 13, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | 0.3 ppb (3) | 6.0 μg/m3 (5) | N/A | 29.0 | |
| Jan. 13, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 26.0 | |
| Jan. 13, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 21.0 | |
| Jan. 13, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | 0.4 ppb (4) | 11.0 μg/m3 (10) | N/A | 13.0 | |
| Jan. 13, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.6 ppb (7) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 13, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | 0.4 ppb (4) | 8.0 μg/m3 (7) | N/A | 7.0 | |
| Jan. 13, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.3 ppb (3) | 8.0 μg/m3 (7) | N/A | 11.0 | |
| Jan. 13, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 12.0 | |
| Jan. 13, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 17.0 | |
| Jan. 13, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | 0.3 ppb (3) | 10.0 μg/m3 (9) | N/A | 16.0 | |
| Jan. 13, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 22.0 | |
| Jan. 13, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 23.0 | |
| Jan. 13, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 22.0 | |
| Jan. 13, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | 0.3 ppb (3) | 6.0 μg/m3 (5) | N/A | 27.0 | |
| Jan. 13, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 30.0 | |
| Jan. 13, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | 0.3 ppb (3) | 16.0 μg/m3 (15) | N/A | 28.0 | |
| Jan. 13, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | 0.4 ppb (4) | 29.0 μg/m3 (26) | N/A | 26.0 | |
| Jan. 13, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.6 ppb (7) | 23.0 μg/m3 (21) | N/A | 21.0 | |
| Jan. 13, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | 0.4 ppb (4) | 18.0 μg/m3 (16) | N/A | 16.0 | |
| Jan. 13, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | 0.3 ppb (3) | 11.0 μg/m3 (10) | N/A | 27.0 | |
| Jan. 12, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 32.0 | |
| Jan. 12, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 34.0 | |
| Jan. 12, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | 0.2 ppb (2) | 6.0 μg/m3 (5) | N/A | 33.0 | |
| Jan. 12, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | 0.2 ppb (2) | 6.0 μg/m3 (5) | N/A | 32.0 | |
| Jan. 12, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | 0.3 ppb (3) | 5.0 μg/m3 (5) | N/A | 28.0 | |
| Jan. 12, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | 0.3 ppb (3) | 1.0 μg/m3 (1) | N/A | 25.0 | |
| Jan. 12, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | 0.5 ppb (6) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 12, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.7 ppb (8) | 27.0 μg/m3 (25) | N/A | 25.0 | |
| Jan. 12, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.9 ppb (10) | 23.0 μg/m3 (21) | N/A | 21.0 | |
| Jan. 12, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.8 ppb (9) | 23.0 μg/m3 (21) | N/A | 21.0 | |
| Jan. 12, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.6 ppb (7) | 24.0 μg/m3 (22) | N/A | 22.0 | |
| Jan. 12, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.5 ppb (6) | 21.0 μg/m3 (19) | N/A | 19.0 | |
| Jan. 12, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.4 ppb (4) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 12, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | 0.5 ppb (6) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 12, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | 0.4 ppb (4) | 17.0 μg/m3 (15) | N/A | 15.0 |