Portland OR, US: 45.496641, -122.602877
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| July 20, 2019, 7 a.m. | 4.8 ppb (4) | 1.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | 4.3 μg/m3 (18) | 18.0 | |
| July 20, 2019, 6 a.m. | 4.9 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 13.9 ppb (173) | N/A | 4.5 μg/m3 (19) | 173.0 | |
| July 20, 2019, 5 a.m. | 6.1 ppb (6) | 1.1 ppb (1) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | N/A | N/A | 4.8 μg/m3 (20) | 20.0 | |
| July 20, 2019, 4 a.m. | 7.1 ppb (7) | 1.2 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| July 20, 2019, 3 a.m. | 6.2 ppb (6) | 1.3 ppb (1) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 5.1 μg/m3 (21) | 26.0 | |
| July 20, 2019, 2 a.m. | 5.3 ppb (5) | 1.4 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | 36.0 ppb (28) | N/A | N/A | 5.1 μg/m3 (21) | 28.0 | |
| July 20, 2019, 1 a.m. | 4.4 ppb (4) | 1.5 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 36.0 ppb (28) | N/A | N/A | 4.6 μg/m3 (19) | 28.0 | |
| July 20, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 3.7 μg/m3 (15) | 26.0 | |
| July 19, 2019, 11 p.m. | 4.1 ppb (4) | 1.7 ppb (2) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 3.8 μg/m3 (16) | 26.0 | |
| July 19, 2019, 10 p.m. | 4.0 ppb (4) | 1.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 3.8 μg/m3 (16) | 26.0 | |
| July 19, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 3.8 μg/m3 (16) | 25.0 | |
| July 19, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (24) | N/A | N/A | 3.9 μg/m3 (16) | 24.0 | |
| July 19, 2019, 7 p.m. | 4.0 ppb (4) | 1.7 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 30.0 ppb (23) | N/A | N/A | 3.6 μg/m3 (15) | 23.0 | |
| July 19, 2019, 6 p.m. | 4.2 ppb (4) | 1.8 ppb (2) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 27.0 ppb (21) | N/A | N/A | 3.7 μg/m3 (15) | 21.0 | |
| July 19, 2019, 5 p.m. | 4.8 ppb (4) | 2.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | 4.3 μg/m3 (18) | 19.0 | |
| July 19, 2019, 4 p.m. | 6.6 ppb (6) | 2.9 ppb (3) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 4.6 μg/m3 (19) | 19.0 | |
| July 19, 2019, 3 p.m. | 9.8 ppb (9) | 4.2 ppb (4) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | N/A | N/A | 5.7 μg/m3 (24) | 24.0 | |
| July 19, 2019, 2 p.m. | 15.0 ppb (14) | 6.6 ppb (6) | N/A | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| July 19, 2019, 1 p.m. | 21.4 ppb (20) | 10.1 ppb (9) | N/A | 11.0 ppb (10) | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | N/A | 7.5 μg/m3 (31) | 31.0 | |
| July 19, 2019, noon | 10.8 ppb (10) | 1.7 ppb (2) | N/A | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 3.0 ppb (2) | N/A | N/A | 7.1 μg/m3 (30) | 30.0 | |
| July 19, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 7.0 ppb (5) | N/A | N/A | 5.4 μg/m3 (23) | 23.0 | |
| July 19, 2019, 10 a.m. | 7.1 ppb (7) | 1.1 ppb (1) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 19, 2019, 9 a.m. | 4.0 ppb (4) | 0.9 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 19, 2019, 8 a.m. | 3.5 ppb (3) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 19, 2019, 7 a.m. | 3.7 ppb (3) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 4.8 μg/m3 (20) | 20.0 | |
| July 19, 2019, 6 a.m. | 3.6 ppb (3) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 4.6 μg/m3 (19) | 19.0 | |
| July 19, 2019, 5 a.m. | 4.4 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| July 19, 2019, 4 a.m. | 4.8 ppb (4) | 1.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 4.7 μg/m3 (20) | 20.0 | |
| July 19, 2019, 3 a.m. | 4.3 ppb (4) | 1.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 27.0 ppb (21) | N/A | N/A | 4.3 μg/m3 (18) | 21.0 | |
| July 19, 2019, 2 a.m. | 4.2 ppb (4) | 1.5 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | 4.1 μg/m3 (17) | 22.0 | |
| July 19, 2019, 1 a.m. | 4.2 ppb (4) | 1.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 4.0 μg/m3 (17) | 22.0 | |
| July 19, 2019, midnight | 4.2 ppb (4) | 1.7 ppb (2) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | 4.1 μg/m3 (17) | 23.0 | |
| July 18, 2019, 11 p.m. | 4.2 ppb (4) | 1.7 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 4.2 μg/m3 (18) | 25.0 | |
| July 18, 2019, 10 p.m. | 4.0 ppb (4) | 1.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 4.4 μg/m3 (18) | 26.0 | |
| July 18, 2019, 9 p.m. | 3.7 ppb (3) | 1.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 3.7 μg/m3 (15) | 25.0 | |
| July 18, 2019, 8 p.m. | 2.5 ppb (2) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 3.7 μg/m3 (15) | 25.0 | |
| July 18, 2019, 7 p.m. | 2.5 ppb (2) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 3.4 μg/m3 (14) | 25.0 | |
| July 18, 2019, 6 p.m. | 2.6 ppb (2) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 3.2 μg/m3 (13) | 25.0 | |
| July 18, 2019, 5 p.m. | 2.9 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 3.5 μg/m3 (15) | 22.0 | |
| July 18, 2019, 4 p.m. | 3.7 ppb (3) | 1.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | N/A | 22.0 | |
| July 18, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 26.0 ppb (20) | N/A | N/A | N/A | 20.0 | |
| July 18, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | N/A | 17.0 | |
| July 18, 2019, 1 p.m. | 4.6 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 20.0 ppb (15) | N/A | N/A | N/A | 15.0 | |
| July 18, 2019, noon | 3.5 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | N/A | 15.0 | |
| July 18, 2019, 11 a.m. | 3.6 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| July 18, 2019, 10 a.m. | 2.4 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| July 18, 2019, 9 a.m. | 1.7 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | N/A | 11.0 | |
| July 18, 2019, 8 a.m. | 2.4 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 7.0 ppb (5) | N/A | N/A | N/A | 5.0 | |
| July 18, 2019, 7 a.m. | 2.3 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 8.0 ppb (6) | N/A | N/A | N/A | 6.0 | |
| July 18, 2019, 6 a.m. | 1.5 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | N/A | N/A | N/A | 7.0 | |
| July 18, 2019, 5 a.m. | 1.9 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 10.0 ppb (8) | N/A | N/A | N/A | 8.0 | |
| July 18, 2019, 4 a.m. | 2.8 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | N/A | N/A | N/A | 8.0 | |
| July 18, 2019, 3 a.m. | 3.9 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | N/A | N/A | N/A | 8.0 | |
| July 18, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | N/A | 11.0 | |
| July 18, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | N/A | 12.0 | |
| July 18, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | N/A | N/A | N/A | 12.0 | |
| July 17, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | N/A | N/A | N/A | 12.0 | |
| July 17, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | N/A | 14.0 | |
| July 17, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | N/A | 17.0 | |
| July 17, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (21) | N/A | N/A | N/A | 21.0 | |
| July 17, 2019, 7 p.m. | 2.4 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | N/A | 19.0 | |
| July 17, 2019, 6 p.m. | 2.3 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | N/A | 18.0 | |
| July 17, 2019, 5 p.m. | 2.6 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | N/A | 17.0 | |
| July 17, 2019, 4 p.m. | 3.6 ppb (3) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | N/A | 15.0 | |
| July 17, 2019, 3 p.m. | 3.5 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | N/A | 14.0 | |
| July 17, 2019, 2 p.m. | 3.9 ppb (4) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | N/A | N/A | N/A | 12.0 | |
| July 17, 2019, 1 p.m. | 3.3 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | N/A | 12.0 | |
| July 17, 2019, noon | 3.0 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | N/A | 12.0 | |
| July 17, 2019, 11 a.m. | 3.2 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | N/A | 12.0 | |
| July 17, 2019, 10 a.m. | 3.5 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | N/A | 13.0 | |
| July 17, 2019, 9 a.m. | 4.0 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | N/A | 14.0 | |
| July 17, 2019, 8 a.m. | 3.9 ppb (4) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | N/A | N/A | N/A | 12.0 | |
| July 17, 2019, 7 a.m. | 3.2 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | N/A | 14.0 | |
| July 17, 2019, 6 a.m. | 3.4 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | N/A | 15.0 | |
| July 17, 2019, 5 a.m. | 3.5 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | N/A | 15.0 | |
| July 17, 2019, 4 a.m. | 3.1 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | N/A | 15.0 | |
| July 17, 2019, 3 a.m. | 3.2 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | N/A | 15.0 | |
| July 17, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | N/A | N/A | N/A | 15.0 | |
| July 17, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | N/A | 19.0 | |
| July 17, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 35.0 ppb (27) | N/A | N/A | N/A | 27.0 | |
| July 16, 2019, 11 p.m. | 1.5 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 35.0 ppb (27) | N/A | N/A | N/A | 27.0 | |
| July 16, 2019, 10 p.m. | 1.5 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 37.0 ppb (28) | N/A | N/A | N/A | 28.0 | |
| July 16, 2019, 9 p.m. | 1.8 ppb (2) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 36.0 ppb (28) | N/A | N/A | N/A | 28.0 | |
| July 16, 2019, 8 p.m. | 1.2 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | N/A | 25.0 | |
| July 16, 2019, 7 p.m. | 1.4 ppb (1) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 27.0 ppb (21) | N/A | N/A | N/A | 21.0 | |
| July 16, 2019, 6 p.m. | 2.0 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 1.8 μg/m3 (8) | 17.0 | |
| July 16, 2019, 5 p.m. | 2.8 ppb (3) | 1.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | 2.5 μg/m3 (10) | 14.0 | |
| July 16, 2019, 4 p.m. | 4.6 ppb (4) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 12.0 ppb (9) | N/A | N/A | 3.7 μg/m3 (15) | 15.0 | |
| July 16, 2019, 3 p.m. | 7.6 ppb (7) | 2.6 ppb (2) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 7.0 ppb (5) | N/A | N/A | 6.6 μg/m3 (28) | 28.0 | |
| July 16, 2019, 2 p.m. | 5.2 ppb (5) | 1.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | N/A | N/A | 5.3 μg/m3 (22) | 22.0 | |
| July 16, 2019, 1 p.m. | 5.1 ppb (5) | 0.5 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 10.0 ppb (8) | N/A | N/A | 5.7 μg/m3 (24) | 24.0 | |
| July 16, 2019, noon | 5.1 ppb (5) | 0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | N/A | N/A | 5.8 μg/m3 (24) | 24.0 | |
| July 16, 2019, 11 a.m. | 3.7 ppb (3) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.5 μg/m3 (19) | 19.0 | |
| July 16, 2019, 10 a.m. | 3.7 ppb (3) | 0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 4.6 μg/m3 (19) | 19.0 | |
| July 16, 2019, 9 a.m. | 3.2 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 12.0 ppb (9) | N/A | N/A | 4.1 μg/m3 (17) | 17.0 | |
| July 16, 2019, 8 a.m. | 2.9 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | 3.6 μg/m3 (15) | 15.0 | |
| July 16, 2019, 7 a.m. | 3.1 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 13.0 ppb (10) | N/A | N/A | 4.2 μg/m3 (18) | 18.0 | |
| July 16, 2019, 6 a.m. | 4.2 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 12.0 ppb (9) | N/A | N/A | 5.6 μg/m3 (23) | 23.0 | |
| July 16, 2019, 5 a.m. | 5.9 ppb (5) | 0.3 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | 7.6 μg/m3 (32) | 32.0 | |
| July 16, 2019, 4 a.m. | 4.4 ppb (4) | 0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | 4.9 μg/m3 (20) | 20.0 | |
| July 16, 2019, 3 a.m. | 2.6 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | 6.3 ppb (68) | N/A | 3.1 μg/m3 (13) | 68.0 | |
| July 16, 2019, 2 a.m. | 2.3 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 2.7 μg/m3 (11) | 18.0 | |
| July 16, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | 7.3 ppb (78) | N/A | 2.7 μg/m3 (11) | 78.0 | |
| July 16, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 26.0 ppb (20) | N/A | N/A | 2.5 μg/m3 (10) | 20.0 | |
| July 15, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | 6.1 ppb (66) | N/A | 2.6 μg/m3 (11) | 66.0 | |
| July 15, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | 1.9 μg/m3 (8) | 19.0 | |
| July 15, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | 1.8 μg/m3 (8) | 19.0 | |
| July 15, 2019, 8 p.m. | 1.4 ppb (1) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | N/A | 18.0 | |
| July 15, 2019, 7 p.m. | 1.4 ppb (1) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 1.9 μg/m3 (8) | 18.0 | |
| July 15, 2019, 6 p.m. | 2.5 ppb (2) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | N/A | N/A | 2.5 μg/m3 (10) | 16.0 | |
| July 15, 2019, 5 p.m. | 4.2 ppb (4) | 1.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | N/A | N/A | 3.8 μg/m3 (16) | 16.0 | |
| July 15, 2019, 4 p.m. | 4.1 ppb (4) | 1.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | N/A | N/A | 3.8 μg/m3 (16) | 16.0 | |
| July 15, 2019, 3 p.m. | 5.7 ppb (5) | 2.2 ppb (2) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | 4.9 μg/m3 (20) | 20.0 | |
| July 15, 2019, 2 p.m. | 4.4 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| July 15, 2019, 1 p.m. | 4.9 ppb (5) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| July 15, 2019, noon | 4.2 ppb (4) | 0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 9.3 ppb (98) | N/A | 5.5 μg/m3 (23) | 98.0 | |
| July 15, 2019, 11 a.m. | 3.9 ppb (4) | 0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 12.0 ppb (9) | N/A | N/A | 5.5 μg/m3 (23) | 23.0 | |
| July 15, 2019, 10 a.m. | 5.1 ppb (5) | 0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 6.2 μg/m3 (26) | 26.0 | |
| July 15, 2019, 9 a.m. | 4.3 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 12.0 ppb (9) | N/A | N/A | 5.4 μg/m3 (23) | 23.0 | |
| July 15, 2019, 8 a.m. | 3.3 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | 4.3 μg/m3 (18) | 18.0 | |
| July 15, 2019, 7 a.m. | 2.7 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 15, 2019, 6 a.m. | 3.5 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | 4.5 μg/m3 (19) | 19.0 | |
| July 15, 2019, 5 a.m. | 3.1 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 20.0 ppb (15) | N/A | N/A | 4.1 μg/m3 (17) | 17.0 | |
| July 15, 2019, 4 a.m. | 2.9 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 3.7 μg/m3 (15) | 17.0 | |
| July 15, 2019, 3 a.m. | 3.2 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | 4.0 μg/m3 (17) | 22.0 | |
| July 15, 2019, 2 a.m. | 1.9 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 2.3 μg/m3 (10) | 22.0 | |
| July 15, 2019, 1 a.m. | 1.5 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 31.0 ppb (24) | N/A | N/A | 2.1 μg/m3 (9) | 24.0 | |
| July 15, 2019, midnight | 1.8 ppb (2) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 2.2 μg/m3 (9) | 25.0 | |
| July 14, 2019, 11 p.m. | 1.3 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 2.0 μg/m3 (8) | 26.0 | |
| July 14, 2019, 10 p.m. | 1.6 ppb (1) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 35.0 ppb (27) | N/A | N/A | 2.1 μg/m3 (9) | 27.0 | |
| July 14, 2019, 9 p.m. | 1.4 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 2.0 μg/m3 (8) | 26.0 | |
| July 14, 2019, 8 p.m. | 1.3 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 2.0 μg/m3 (8) | 25.0 | |
| July 14, 2019, 7 p.m. | 1.9 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 2.2 μg/m3 (9) | 22.0 | |
| July 14, 2019, 6 p.m. | 2.7 ppb (3) | 1.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 2.6 μg/m3 (11) | 18.0 | |
| July 14, 2019, 5 p.m. | 3.7 ppb (3) | 1.8 ppb (2) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | 3.0 μg/m3 (12) | 15.0 | |
| July 14, 2019, 4 p.m. | 4.2 ppb (4) | 2.1 ppb (2) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | 3.1 μg/m3 (13) | 13.0 | |
| July 14, 2019, 3 p.m. | 3.4 ppb (3) | 1.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | 2.7 μg/m3 (11) | 12.0 | |
| July 14, 2019, 2 p.m. | 3.2 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | 3.5 μg/m3 (15) | 15.0 | |
| July 14, 2019, 1 p.m. | 5.9 ppb (5) | 1.4 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 8.0 ppb (6) | N/A | N/A | 6.4 μg/m3 (27) | 27.0 | |
| July 14, 2019, noon | 5.3 ppb (5) | 0.4 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 6.0 ppb (5) | N/A | N/A | 6.2 μg/m3 (26) | 26.0 | |
| July 14, 2019, 11 a.m. | 3.8 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 8.0 ppb (6) | N/A | N/A | 4.6 μg/m3 (19) | 19.0 | |
| July 14, 2019, 10 a.m. | 2.8 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 13.0 ppb (10) | N/A | N/A | 3.7 μg/m3 (15) | 15.0 | |
| July 14, 2019, 9 a.m. | 2.3 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 13.6 ppb (168) | N/A | 3.1 μg/m3 (13) | 168.0 | |
| July 14, 2019, 8 a.m. | 2.2 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 2.8 μg/m3 (12) | 12.0 | |
| July 14, 2019, 7 a.m. | 1.7 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | 2.5 μg/m3 (10) | 13.0 | |
| July 14, 2019, 6 a.m. | 2.8 ppb (3) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | 3.6 μg/m3 (15) | 15.0 | |
| July 14, 2019, 5 a.m. | 2.9 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | 3.8 μg/m3 (16) | 16.0 | |
| July 14, 2019, 4 a.m. | 3.9 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 20.0 ppb (15) | N/A | N/A | 4.5 μg/m3 (19) | 19.0 | |
| July 14, 2019, 3 a.m. | 2.3 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 2.7 μg/m3 (11) | 17.0 | |
| July 14, 2019, 2 a.m. | 2.1 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 2.4 μg/m3 (10) | 17.0 | |
| July 14, 2019, 1 a.m. | 1.9 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 2.2 μg/m3 (9) | 17.0 | |
| July 14, 2019, midnight | 1.7 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 1.9 μg/m3 (8) | 18.0 | |
| July 13, 2019, 11 p.m. | 1.5 ppb (1) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 1.9 μg/m3 (8) | 20.0 | |
| July 13, 2019, 10 p.m. | 1.5 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 2.4 μg/m3 (10) | 25.0 | |
| July 13, 2019, 9 p.m. | 1.8 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 2.7 μg/m3 (11) | 25.0 | |
| July 13, 2019, 8 p.m. | 2.6 ppb (2) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 27.0 ppb (21) | N/A | N/A | 2.9 μg/m3 (12) | 21.0 | |
| July 13, 2019, 7 p.m. | 2.1 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 2.2 μg/m3 (9) | 18.0 | |
| July 13, 2019, 6 p.m. | 1.7 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 1.8 μg/m3 (8) | 17.0 | |
| July 13, 2019, 5 p.m. | 2.3 ppb (2) | 1.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | 2.0 μg/m3 (8) | 15.0 | |
| July 13, 2019, 4 p.m. | 2.6 ppb (2) | 1.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 14.4 ppb (182) | N/A | 2.2 μg/m3 (9) | 182.0 | |
| July 13, 2019, 3 p.m. | 2.9 ppb (3) | 1.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | N/A | N/A | 2.4 μg/m3 (10) | 12.0 | |
| July 13, 2019, 2 p.m. | 2.7 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | 2.5 μg/m3 (10) | 11.0 | |
| July 13, 2019, 1 p.m. | 2.3 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 2.9 μg/m3 (12) | 12.0 | |
| July 13, 2019, noon | 2.6 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 3.3 μg/m3 (14) | 14.0 | |
| July 13, 2019, 11 a.m. | 2.3 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 13, 2019, 10 a.m. | 2.3 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 13, 2019, 9 a.m. | 2.2 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 13, 2019, 8 a.m. | 3.0 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | 3.8 μg/m3 (16) | 16.0 |