Chandler (Villa Pallavicini) AZ, US: 33.299, -111.8843
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 27, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 30.0 | |
| Jan. 27, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | 0.3 ppb (3) | 18.0 μg/m3 (16) | N/A | 25.0 | |
| Jan. 27, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | 0.4 ppb (4) | N/A | N/A | 21.0 | |
| Jan. 27, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 27, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.5 ppb (6) | 36.0 μg/m3 (33) | N/A | 33.0 | |
| Jan. 27, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.6 ppb (7) | 52.0 μg/m3 (47) | N/A | 47.0 | |
| Jan. 27, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.6 ppb (7) | 36.0 μg/m3 (33) | N/A | 33.0 | |
| Jan. 27, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.5 ppb (6) | 22.0 μg/m3 (20) | N/A | 20.0 | |
| Jan. 27, 2020, noon | 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. 27, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.5 ppb (6) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 27, 2020, 10 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. 27, 2020, 9 a.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. 27, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.7 ppb (8) | 28.0 μg/m3 (25) | N/A | 25.0 | |
| Jan. 27, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.8 ppb (9) | 31.0 μg/m3 (28) | N/A | 28.0 | |
| Jan. 27, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.8 ppb (9) | 28.0 μg/m3 (25) | N/A | 25.0 | |
| Jan. 27, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.8 ppb (9) | 26.0 μg/m3 (24) | N/A | 24.0 | |
| Jan. 27, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | 0.7 ppb (8) | 22.0 μg/m3 (20) | N/A | 20.0 | |
| Jan. 27, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | 0.6 ppb (7) | 18.0 μg/m3 (16) | N/A | 16.0 | |
| Jan. 27, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | 0.4 ppb (4) | 14.0 μg/m3 (13) | N/A | 19.0 | |
| Jan. 27, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | 0.4 ppb (4) | 15.0 μg/m3 (14) | N/A | 25.0 | |
| Jan. 27, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 34.0 | |
| Jan. 26, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | 0.2 ppb (2) | 6.0 μg/m3 (5) | N/A | 36.0 | |
| Jan. 26, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | 0.3 ppb (3) | 10.0 μg/m3 (9) | N/A | 36.0 | |
| Jan. 26, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | 0.3 ppb (3) | 11.0 μg/m3 (10) | N/A | 35.0 | |
| Jan. 26, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | 0.3 ppb (3) | 12.0 μg/m3 (11) | N/A | 31.0 | |
| Jan. 26, 2020, 7 p.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. 26, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.3 ppb (3) | 15.0 μg/m3 (14) | N/A | 18.0 | |
| Jan. 26, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | 0.4 ppb (4) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 26, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | 0.3 ppb (3) | 16.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 26, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | 0.3 ppb (3) | 13.0 μg/m3 (12) | N/A | 12.0 | |
| Jan. 26, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.3 ppb (3) | 13.0 μg/m3 (12) | N/A | 12.0 | |
| Jan. 26, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | 0.3 ppb (3) | 13.0 μg/m3 (12) | N/A | 12.0 | |
| Jan. 26, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.3 ppb (3) | 12.0 μg/m3 (11) | N/A | 11.0 | |
| Jan. 26, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.4 ppb (4) | 17.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 26, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.4 ppb (4) | 25.0 μg/m3 (23) | N/A | 23.0 | |
| Jan. 26, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.6 ppb (7) | 29.0 μg/m3 (26) | N/A | 26.0 | |
| Jan. 26, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.9 ppb (10) | 37.0 μg/m3 (34) | N/A | 34.0 | |
| Jan. 26, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.8 ppb (9) | 29.0 μg/m3 (26) | N/A | 26.0 | |
| Jan. 26, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.9 ppb (10) | 34.0 μg/m3 (31) | N/A | 31.0 | |
| Jan. 26, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.8 ppb (9) | 32.0 μg/m3 (29) | N/A | 29.0 | |
| Jan. 26, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.7 ppb (8) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 26, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.5 ppb (6) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 26, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | 0.5 ppb (6) | 18.0 μg/m3 (16) | N/A | 16.0 | |
| Jan. 26, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | 0.5 ppb (6) | 18.0 μg/m3 (16) | N/A | 18.0 | |
| Jan. 26, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | 0.3 ppb (3) | 14.0 μg/m3 (13) | N/A | 26.0 | |
| Jan. 25, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | 0.3 ppb (3) | 11.0 μg/m3 (10) | N/A | 29.0 | |
| Jan. 25, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | 0.3 ppb (3) | 10.0 μg/m3 (9) | N/A | 29.0 | |
| Jan. 25, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | 0.3 ppb (3) | 14.0 μg/m3 (13) | N/A | 27.0 | |
| Jan. 25, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | 0.3 ppb (3) | 14.0 μg/m3 (13) | N/A | 25.0 | |
| Jan. 25, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | 0.3 ppb (3) | 15.0 μg/m3 (14) | N/A | 21.0 | |
| Jan. 25, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.3 ppb (3) | 16.0 μg/m3 (15) | N/A | 18.0 | |
| Jan. 25, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | 0.3 ppb (3) | 24.0 μg/m3 (22) | N/A | 22.0 | |
| Jan. 25, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | 0.4 ppb (4) | 26.0 μg/m3 (24) | N/A | 24.0 | |
| Jan. 25, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | 0.4 ppb (4) | 44.0 μg/m3 (40) | N/A | 40.0 | |
| Jan. 25, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.4 ppb (4) | 22.0 μg/m3 (20) | N/A | 20.0 | |
| Jan. 25, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.3 ppb (3) | 13.0 μg/m3 (12) | N/A | 12.0 | |
| Jan. 25, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | 0.3 ppb (3) | 13.0 μg/m3 (12) | N/A | 12.0 | |
| Jan. 25, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.3 ppb (3) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 25, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.4 ppb (4) | 18.0 μg/m3 (16) | N/A | 16.0 | |
| Jan. 25, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.5 ppb (6) | 23.0 μg/m3 (21) | N/A | 21.0 | |
| Jan. 25, 2020, 8 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. 25, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.4 ppb (4) | 17.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 25, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | 0.5 ppb (6) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 25, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.5 ppb (6) | 23.0 μg/m3 (21) | N/A | 21.0 | |
| Jan. 25, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.5 ppb (6) | 23.0 μg/m3 (21) | N/A | 21.0 | |
| Jan. 25, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | 0.5 ppb (6) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 25, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.5 ppb (6) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 25, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | 0.3 ppb (3) | 16.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 25, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | 0.4 ppb (4) | 15.0 μg/m3 (14) | N/A | 16.0 | |
| Jan. 24, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | 0.3 ppb (3) | 15.0 μg/m3 (14) | N/A | 20.0 | |
| Jan. 24, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.3 ppb (3) | 11.0 μg/m3 (10) | N/A | 23.0 | |
| Jan. 24, 2020, 9 p.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. 24, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 21.0 | |
| Jan. 24, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | 0.3 ppb (3) | 5.0 μg/m3 (5) | N/A | 20.0 | |
| Jan. 24, 2020, 6 p.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. 24, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | 0.3 ppb (3) | 17.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 24, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.4 ppb (4) | 22.0 μg/m3 (20) | N/A | 20.0 | |
| Jan. 24, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.7 ppb (8) | 26.0 μg/m3 (24) | N/A | 24.0 | |
| Jan. 24, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.5 ppb (6) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 24, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.5 ppb (6) | 16.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 24, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.4 ppb (4) | 13.0 μg/m3 (12) | N/A | 12.0 | |
| Jan. 24, 2020, 11 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. 24, 2020, 10 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. 24, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.4 ppb (4) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 24, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.4 ppb (4) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 24, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.4 ppb (4) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 24, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | 0.4 ppb (4) | 17.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 24, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.5 ppb (6) | 27.0 μg/m3 (25) | N/A | 25.0 | |
| Jan. 24, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.6 ppb (7) | 31.0 μg/m3 (28) | N/A | 28.0 | |
| Jan. 24, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | 0.5 ppb (6) | 32.0 μg/m3 (29) | N/A | 29.0 | |
| Jan. 24, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | 0.6 ppb (7) | 26.0 μg/m3 (24) | N/A | 24.0 | |
| Jan. 24, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | 0.5 ppb (6) | 20.0 μg/m3 (18) | N/A | 18.0 | |
| Jan. 24, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | 0.3 ppb (3) | 12.0 μg/m3 (11) | N/A | 20.0 | |
| Jan. 23, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | 0.3 ppb (3) | 11.0 μg/m3 (10) | N/A | 24.0 | |
| Jan. 23, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | 0.3 ppb (3) | 11.0 μg/m3 (10) | N/A | 24.0 | |
| Jan. 23, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.3 ppb (3) | 8.0 μg/m3 (7) | N/A | 23.0 | |
| Jan. 23, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | 0.3 ppb (3) | 8.0 μg/m3 (7) | N/A | 21.0 | |
| Jan. 23, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | 0.3 ppb (3) | 9.0 μg/m3 (8) | N/A | 18.0 | |
| Jan. 23, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | 0.3 ppb (3) | 12.0 μg/m3 (11) | N/A | 15.0 | |
| Jan. 23, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.3 ppb (3) | 17.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 23, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | 0.4 ppb (4) | 18.0 μg/m3 (16) | N/A | 16.0 | |
| Jan. 23, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.6 ppb (7) | 25.0 μg/m3 (23) | N/A | 23.0 | |
| Jan. 23, 2020, 2 p.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. 23, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.5 ppb (6) | 15.0 μg/m3 (14) | N/A | 14.0 | |
| Jan. 23, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.4 ppb (4) | 13.0 μg/m3 (12) | N/A | 12.0 | |
| Jan. 23, 2020, 11 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. 23, 2020, 10 a.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. 23, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.7 ppb (8) | 18.0 μg/m3 (16) | N/A | 16.0 | |
| Jan. 23, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.7 ppb (8) | 19.0 μg/m3 (17) | N/A | 17.0 | |
| Jan. 23, 2020, 7 a.m. | 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. 23, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.7 ppb (8) | 16.0 μg/m3 (15) | N/A | 15.0 | |
| Jan. 23, 2020, 5 a.m. | 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. 23, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.5 ppb (6) | 13.0 μg/m3 (12) | N/A | 12.0 | |
| Jan. 23, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | 0.4 ppb (4) | 11.0 μg/m3 (10) | N/A | 10.0 | |
| Jan. 23, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | 0.5 ppb (6) | 11.0 μg/m3 (10) | N/A | 13.0 | |
| Jan. 23, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | 0.4 ppb (4) | 7.0 μg/m3 (6) | N/A | 15.0 | |
| Jan. 23, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.3 ppb (3) | 7.0 μg/m3 (6) | N/A | 22.0 | |
| Jan. 22, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 24.0 | |
| Jan. 22, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | 0.2 ppb (2) | 8.0 μg/m3 (7) | N/A | 24.0 | |
| Jan. 22, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 21.0 | |
| Jan. 22, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | 0.2 ppb (2) | 6.0 μg/m3 (5) | N/A | 20.0 | |
| Jan. 22, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | 0.3 ppb (3) | 6.0 μg/m3 (5) | N/A | 16.0 | |
| Jan. 22, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | 0.3 ppb (3) | 2.0 μg/m3 (2) | N/A | 15.0 | |
| Jan. 22, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.4 ppb (4) | N/A | N/A | 8.0 | |
| Jan. 22, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | 0.4 ppb (4) | N/A | N/A | 5.0 | |
| Jan. 22, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | 23.0 μg/m3 (21) | N/A | 21.0 | |
| Jan. 22, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.5 ppb (6) | 14.0 μg/m3 (13) | N/A | 13.0 | |
| Jan. 22, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.2 ppb (2) | 12.0 μg/m3 (11) | N/A | 11.0 | |
| Jan. 22, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | 0.2 ppb (2) | 8.0 μg/m3 (7) | N/A | 7.0 | |
| Jan. 22, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.1 ppb (1) | 6.0 μg/m3 (5) | N/A | 9.0 | |
| Jan. 22, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | 0.1 ppb (1) | 5.0 μg/m3 (5) | N/A | 10.0 | |
| Jan. 22, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.1 ppb (1) | 6.0 μg/m3 (5) | N/A | 9.0 | |
| Jan. 22, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | 0.2 ppb (2) | 6.0 μg/m3 (5) | N/A | 13.0 | |
| Jan. 22, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 15.0 | |
| Jan. 22, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | 0.2 ppb (2) | 8.0 μg/m3 (7) | N/A | 16.0 | |
| Jan. 22, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | 0.2 ppb (2) | 8.0 μg/m3 (7) | N/A | 17.0 | |
| Jan. 22, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | 0.2 ppb (2) | 8.0 μg/m3 (7) | N/A | 16.0 | |
| Jan. 22, 2020, 3 a.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. 22, 2020, 2 a.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. 22, 2020, 1 a.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. 22, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.2 ppb (2) | 9.0 μg/m3 (8) | N/A | 22.0 | |
| Jan. 21, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.2 ppb (2) | 6.0 μg/m3 (5) | N/A | 22.0 | |
| Jan. 21, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 23.0 | |
| Jan. 21, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 25.0 | |
| Jan. 21, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 24.0 | |
| Jan. 21, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 21.0 | |
| Jan. 21, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | 0.2 ppb (2) | 6.0 μg/m3 (5) | N/A | 25.0 | |
| Jan. 21, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.2 ppb (2) | 9.0 μg/m3 (8) | N/A | 22.0 | |
| Jan. 21, 2020, 4 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. 21, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.2 ppb (2) | 7.0 μg/m3 (6) | N/A | 22.0 | |
| Jan. 21, 2020, 2 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. 21, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | 0.2 ppb (2) | 18.0 μg/m3 (16) | N/A | 16.0 | |
| Jan. 21, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.2 ppb (2) | 28.0 μg/m3 (25) | N/A | 25.0 | |
| Jan. 21, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.2 ppb (2) | 21.0 μg/m3 (19) | N/A | 19.0 | |
| Jan. 21, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | 0.2 ppb (2) | 15.0 μg/m3 (14) | N/A | 19.0 | |
| Jan. 21, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | 0.2 ppb (2) | 25.0 μg/m3 (23) | N/A | 23.0 | |
| Jan. 21, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.2 ppb (2) | 25.0 μg/m3 (23) | N/A | 23.0 | |
| Jan. 21, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.2 ppb (2) | 26.0 μg/m3 (24) | N/A | 24.0 | |
| Jan. 21, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | 0.2 ppb (2) | 21.0 μg/m3 (19) | N/A | 19.0 | |
| Jan. 21, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | 0.2 ppb (2) | 21.0 μg/m3 (19) | N/A | 19.0 | |
| Jan. 21, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | 0.2 ppb (2) | 31.0 μg/m3 (28) | N/A | 28.0 | |
| Jan. 21, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.4 ppb (4) | 49.0 μg/m3 (45) | N/A | 45.0 | |
| Jan. 21, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.3 ppb (3) | 44.0 μg/m3 (40) | N/A | 40.0 | |
| Jan. 21, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.2 ppb (2) | 56.0 μg/m3 (50) | N/A | 50.0 | |
| Jan. 21, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (6) | 0.3 ppb (3) | 57.0 μg/m3 (51) | N/A | 51.0 | |
| Jan. 20, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.3 ppb (3) | 35.0 μg/m3 (32) | N/A | 32.0 | |
| Jan. 20, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.2 ppb (2) | 33.0 μg/m3 (30) | N/A | 30.0 | |
| Jan. 20, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.2 ppb (2) | 25.0 μg/m3 (23) | N/A | 23.0 |