Pleasanton (Arthur H. Breed Junior Fwy) CA, US: 37.701222, -121.903019
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| July 16, 2019, 3 a.m. | 19.4 ppb (18) | 10.0 ppb (9) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | 3.0 μg/m3 (12) | 18.0 | |
| July 16, 2019, 2 a.m. | 15.8 ppb (15) | 8.2 ppb (8) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | 1.0 μg/m3 (4) | 15.0 | |
| July 16, 2019, 1 a.m. | 20.7 ppb (19) | 11.7 ppb (11) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | 3.0 μg/m3 (12) | 19.0 | |
| July 16, 2019, midnight | 23.6 ppb (22) | 13.7 ppb (13) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 15, 2019, 11 p.m. | 26.9 ppb (25) | 15.4 ppb (14) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | 4.0 μg/m3 (17) | 25.0 | |
| July 15, 2019, 10 p.m. | 27.7 ppb (26) | 14.5 ppb (13) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.56 ppb (6) | N/A | 6.0 μg/m3 (25) | 26.0 | |
| July 15, 2019, 9 p.m. | 28.3 ppb (26) | 14.0 ppb (13) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.57 ppb (6) | N/A | 4.0 μg/m3 (17) | 26.0 | |
| July 15, 2019, 8 p.m. | 23.7 ppb (22) | 10.6 ppb (10) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 3.0 μg/m3 (12) | 22.0 | |
| July 15, 2019, 7 p.m. | 20.1 ppb (19) | 9.0 ppb (8) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 3.0 μg/m3 (12) | 19.0 | |
| July 15, 2019, 6 p.m. | 36.6 ppb (34) | 17.9 ppb (17) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | N/A | 34.0 | |
| July 15, 2019, 5 p.m. | 31.2 ppb (29) | 14.7 ppb (14) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 15, 2019, 4 p.m. | 40.6 ppb (38) | 23.0 ppb (21) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| July 15, 2019, 3 p.m. | 24.5 ppb (23) | 11.1 ppb (10) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 15, 2019, 2 p.m. | 23.7 ppb (22) | 10.1 ppb (9) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 15, 2019, 1 p.m. | 52.4 ppb (49) | 33.7 ppb (31) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | 7.0 μg/m3 (29) | 49.0 | |
| July 15, 2019, noon | 43.0 ppb (40) | 25.1 ppb (23) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | 6.0 μg/m3 (25) | 40.0 | |
| July 15, 2019, 11 a.m. | 28.5 ppb (26) | 15.1 ppb (14) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 6.0 μg/m3 (25) | 26.0 | |
| July 15, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 15, 2019, 9 a.m. | 16.2 ppb (15) | 3.3 ppb (3) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 15, 2019, 8 a.m. | 15.0 ppb (14) | 2.3 ppb (2) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 15, 2019, 7 a.m. | 12.3 ppb (11) | 1.5 ppb (1) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 15, 2019, 6 a.m. | 10.2 ppb (9) | 0.6 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 15, 2019, 5 a.m. | 14.6 ppb (14) | 3.6 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 15, 2019, 4 a.m. | 10.0 ppb (9) | 1.5 ppb (1) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 15, 2019, 3 a.m. | 15.8 ppb (15) | 5.2 ppb (5) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.67 ppb (7) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 15, 2019, 2 a.m. | 16.5 ppb (15) | 6.6 ppb (6) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.67 ppb (7) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 15, 2019, 1 a.m. | 14.0 ppb (13) | 5.3 ppb (5) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 15, 2019, midnight | 14.5 ppb (13) | 5.9 ppb (5) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.66 ppb (7) | N/A | 3.0 μg/m3 (12) | 13.0 | |
| July 14, 2019, 11 p.m. | 9.5 ppb (9) | 3.3 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.57 ppb (6) | N/A | 2.0 μg/m3 (8) | 9.0 | |
| July 14, 2019, 10 p.m. | 12.1 ppb (11) | 4.8 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | 1.0 μg/m3 (4) | 11.0 | |
| July 14, 2019, 9 p.m. | 12.3 ppb (11) | 4.5 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 14, 2019, 8 p.m. | 9.1 ppb (8) | 3.3 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 14, 2019, 7 p.m. | 10.2 ppb (9) | 4.1 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 14, 2019, 6 p.m. | 14.2 ppb (13) | 6.4 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 14, 2019, 5 p.m. | 12.9 ppb (12) | 6.0 ppb (6) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.56 ppb (6) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 14, 2019, 4 p.m. | 12.7 ppb (12) | 6.8 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 14, 2019, 3 p.m. | 12.5 ppb (12) | 6.7 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 14, 2019, 2 p.m. | 10.4 ppb (10) | 5.5 ppb (5) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 14, 2019, 1 p.m. | 10.2 ppb (9) | 4.7 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 14, 2019, noon | 8.9 ppb (8) | 3.1 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 14, 2019, 11 a.m. | 8.0 ppb (7) | 2.2 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 14, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 14, 2019, 9 a.m. | 6.6 ppb (6) | 2.1 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 14, 2019, 8 a.m. | 7.3 ppb (7) | 2.4 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 14, 2019, 7 a.m. | 8.7 ppb (8) | 2.7 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 14, 2019, 6 a.m. | 10.3 ppb (10) | 4.1 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 14, 2019, 5 a.m. | 13.9 ppb (13) | 5.5 ppb (5) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 14, 2019, 4 a.m. | 15.9 ppb (15) | 5.7 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 14, 2019, 3 a.m. | 15.5 ppb (14) | 5.4 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 14, 2019, 2 a.m. | 16.3 ppb (15) | 6.6 ppb (6) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.67 ppb (7) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 14, 2019, 1 a.m. | 17.0 ppb (16) | 7.8 ppb (7) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.67 ppb (7) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 14, 2019, midnight | 15.6 ppb (14) | 6.3 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 13, 2019, 11 p.m. | 16.2 ppb (15) | 6.4 ppb (6) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 3.0 μg/m3 (12) | 15.0 | |
| July 13, 2019, 10 p.m. | 18.0 ppb (17) | 6.8 ppb (6) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.65 ppb (7) | N/A | 3.0 μg/m3 (12) | 17.0 | |
| July 13, 2019, 9 p.m. | 17.6 ppb (16) | 6.4 ppb (6) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.66 ppb (7) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 13, 2019, 8 p.m. | 18.7 ppb (17) | 7.7 ppb (7) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.67 ppb (7) | N/A | 3.0 μg/m3 (12) | 17.0 | |
| July 13, 2019, 7 p.m. | 17.6 ppb (16) | 7.8 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | 3.0 μg/m3 (12) | 16.0 | |
| July 13, 2019, 6 p.m. | 17.0 ppb (16) | 8.6 ppb (8) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 13, 2019, 5 p.m. | 18.2 ppb (17) | 10.2 ppb (9) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.56 ppb (6) | N/A | 3.0 μg/m3 (12) | 17.0 | |
| July 13, 2019, 4 p.m. | 21.3 ppb (20) | 13.4 ppb (12) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 13, 2019, 3 p.m. | 23.8 ppb (22) | 15.2 ppb (14) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.57 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 13, 2019, 2 p.m. | 17.9 ppb (17) | 10.3 ppb (10) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 13, 2019, 1 p.m. | 18.8 ppb (17) | 9.3 ppb (9) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 13, 2019, noon | 18.1 ppb (17) | 7.8 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 3.0 μg/m3 (12) | 17.0 | |
| July 13, 2019, 11 a.m. | 14.5 ppb (13) | 5.5 ppb (5) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 2.0 μg/m3 (8) | 13.0 | |
| July 13, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 13, 2019, 9 a.m. | 7.4 ppb (7) | 2.5 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 1.0 μg/m3 (4) | 7.0 | |
| July 13, 2019, 8 a.m. | 7.7 ppb (7) | 2.7 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 13, 2019, 7 a.m. | 11.2 ppb (10) | 4.2 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 13, 2019, 6 a.m. | 15.0 ppb (14) | 6.9 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 13, 2019, 5 a.m. | 17.2 ppb (16) | 7.5 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 13, 2019, 4 a.m. | 20.1 ppb (19) | 9.7 ppb (9) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 13, 2019, 3 a.m. | 19.3 ppb (18) | 8.9 ppb (8) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.56 ppb (6) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 13, 2019, 2 a.m. | 18.1 ppb (17) | 8.4 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 13, 2019, 1 a.m. | 22.8 ppb (21) | 11.9 ppb (11) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | 4.0 μg/m3 (17) | 21.0 | |
| July 13, 2019, midnight | 20.7 ppb (19) | 9.6 ppb (9) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 12, 2019, 11 p.m. | 15.0 ppb (14) | 6.0 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 2.0 μg/m3 (8) | 14.0 | |
| July 12, 2019, 10 p.m. | 19.4 ppb (18) | 8.5 ppb (8) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 3.0 μg/m3 (12) | 18.0 | |
| July 12, 2019, 9 p.m. | 27.9 ppb (26) | 12.3 ppb (11) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 4.0 μg/m3 (17) | 26.0 | |
| July 12, 2019, 8 p.m. | 34.5 ppb (32) | 17.6 ppb (16) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 4.0 μg/m3 (17) | 32.0 | |
| July 12, 2019, 7 p.m. | 36.7 ppb (34) | 20.7 ppb (19) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 5.0 μg/m3 (21) | 34.0 | |
| July 12, 2019, 6 p.m. | 42.9 ppb (40) | 26.6 ppb (25) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 4.0 μg/m3 (17) | 40.0 | |
| July 12, 2019, 5 p.m. | 39.7 ppb (37) | 25.6 ppb (24) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 5.0 μg/m3 (21) | 37.0 | |
| July 12, 2019, 4 p.m. | 28.8 ppb (27) | 18.9 ppb (18) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 6.0 μg/m3 (25) | 27.0 | |
| July 12, 2019, 3 p.m. | 40.6 ppb (38) | 28.8 ppb (27) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.56 ppb (6) | N/A | 3.0 μg/m3 (12) | 38.0 | |
| July 12, 2019, 2 p.m. | 32.4 ppb (30) | 21.2 ppb (20) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | -1.0 μg/m3 (0) | 30.0 | |
| July 12, 2019, 1 p.m. | 27.8 ppb (26) | 15.4 ppb (14) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 0.0 μg/m3 (0) | 26.0 | |
| July 12, 2019, noon | 24.7 ppb (23) | 12.0 ppb (11) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 3.0 μg/m3 (12) | 23.0 | |
| July 12, 2019, 11 a.m. | 22.4 ppb (21) | 11.2 ppb (10) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 2.0 μg/m3 (8) | 21.0 | |
| July 12, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 12, 2019, 9 a.m. | 10.1 ppb (9) | 4.2 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 1.0 μg/m3 (4) | 9.0 | |
| July 12, 2019, 8 a.m. | 9.9 ppb (9) | 4.3 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 0.0 μg/m3 (0) | 9.0 | |
| July 12, 2019, 7 a.m. | 11.3 ppb (10) | 5.0 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | -1.0 μg/m3 (0) | 10.0 | |
| July 12, 2019, 6 a.m. | 12.6 ppb (12) | 5.6 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 0.0 μg/m3 (0) | 12.0 | |
| July 12, 2019, 5 a.m. | 14.2 ppb (13) | 6.7 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 1.0 μg/m3 (4) | 13.0 | |
| July 12, 2019, 4 a.m. | 15.5 ppb (14) | 7.6 ppb (7) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 1.0 μg/m3 (4) | 14.0 | |
| July 12, 2019, 3 a.m. | 16.9 ppb (16) | 9.1 ppb (8) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 0.0 μg/m3 (0) | 16.0 | |
| July 12, 2019, 2 a.m. | 9.3 ppb (9) | 4.3 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 0.0 μg/m3 (0) | 9.0 | |
| July 12, 2019, 1 a.m. | 14.6 ppb (14) | 8.3 ppb (8) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 1.0 μg/m3 (4) | 14.0 | |
| July 12, 2019, midnight | 17.9 ppb (17) | 10.2 ppb (9) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 2.0 μg/m3 (8) | 17.0 | |
| July 11, 2019, 11 p.m. | 7.7 ppb (7) | 3.7 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 1.0 μg/m3 (4) | 7.0 | |
| July 11, 2019, 10 p.m. | 19.8 ppb (18) | 10.5 ppb (10) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 1.0 μg/m3 (4) | 18.0 | |
| July 11, 2019, 9 p.m. | 20.6 ppb (19) | 11.2 ppb (10) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 1.0 μg/m3 (4) | 19.0 | |
| July 11, 2019, 8 p.m. | 16.0 ppb (15) | 7.7 ppb (7) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 2.0 μg/m3 (8) | 15.0 | |
| July 11, 2019, 7 p.m. | 21.4 ppb (20) | 12.3 ppb (11) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 2.0 μg/m3 (8) | 20.0 | |
| July 11, 2019, 6 p.m. | 44.8 ppb (41) | 28.4 ppb (26) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 3.0 μg/m3 (12) | 41.0 | |
| July 11, 2019, 5 p.m. | 45.3 ppb (42) | 30.2 ppb (28) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.56 ppb (6) | N/A | 5.0 μg/m3 (21) | 42.0 | |
| July 11, 2019, 4 p.m. | 42.9 ppb (40) | 30.0 ppb (28) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 5.0 μg/m3 (21) | 40.0 | |
| July 11, 2019, 3 p.m. | 45.9 ppb (42) | 34.1 ppb (32) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | 8.0 μg/m3 (33) | 42.0 | |
| July 11, 2019, 2 p.m. | 29.3 ppb (27) | 19.6 ppb (18) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 5.0 μg/m3 (21) | 27.0 | |
| July 11, 2019, 1 p.m. | 27.4 ppb (25) | 16.5 ppb (15) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 3.0 μg/m3 (12) | 25.0 | |
| July 11, 2019, noon | 40.3 ppb (37) | 26.7 ppb (25) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 4.0 μg/m3 (17) | 37.0 | |
| July 11, 2019, 11 a.m. | 32.3 ppb (30) | 20.2 ppb (19) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 4.0 μg/m3 (17) | 30.0 | |
| July 11, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 11, 2019, 9 a.m. | 19.2 ppb (18) | 9.3 ppb (9) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 3.0 μg/m3 (12) | 18.0 | |
| July 11, 2019, 8 a.m. | 13.8 ppb (13) | 5.1 ppb (5) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 3.0 μg/m3 (12) | 13.0 | |
| July 11, 2019, 7 a.m. | 8.9 ppb (8) | 1.5 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 11, 2019, 6 a.m. | 9.7 ppb (9) | 1.1 ppb (1) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 11, 2019, 5 a.m. | 15.6 ppb (14) | 5.6 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 11, 2019, 4 a.m. | 20.6 ppb (19) | 9.9 ppb (9) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 2.0 μg/m3 (8) | 19.0 | |
| July 11, 2019, 3 a.m. | 17.2 ppb (16) | 7.5 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 2.0 μg/m3 (8) | 16.0 | |
| July 11, 2019, 2 a.m. | 19.1 ppb (18) | 10.2 ppb (9) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 3.0 μg/m3 (12) | 18.0 | |
| July 11, 2019, 1 a.m. | 11.9 ppb (11) | 5.4 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 1.0 μg/m3 (4) | 11.0 | |
| July 11, 2019, midnight | 13.5 ppb (12) | 6.6 ppb (6) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 1.0 μg/m3 (4) | 12.0 | |
| July 10, 2019, 11 p.m. | 10.7 ppb (10) | 4.8 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 0.0 μg/m3 (0) | 10.0 | |
| July 10, 2019, 10 p.m. | 15.1 ppb (14) | 7.3 ppb (7) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 2.0 μg/m3 (8) | 14.0 | |
| July 10, 2019, 9 p.m. | 13.4 ppb (12) | 6.0 ppb (6) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 10, 2019, 8 p.m. | 13.6 ppb (13) | 6.8 ppb (6) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 3.0 μg/m3 (12) | 13.0 | |
| July 10, 2019, 7 p.m. | 19.6 ppb (18) | 11.7 ppb (11) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 2.0 μg/m3 (8) | 18.0 | |
| July 10, 2019, 6 p.m. | 27.3 ppb (25) | 18.1 ppb (17) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 1.0 μg/m3 (4) | 25.0 | |
| July 10, 2019, 5 p.m. | 26.2 ppb (24) | 17.7 ppb (16) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 1.0 μg/m3 (4) | 24.0 | |
| July 10, 2019, 4 p.m. | 32.3 ppb (30) | 21.8 ppb (20) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 2.0 μg/m3 (8) | 30.0 | |
| July 10, 2019, 3 p.m. | 21.3 ppb (20) | 13.0 ppb (12) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 3.0 μg/m3 (12) | 20.0 | |
| July 10, 2019, 2 p.m. | 5.5 ppb (5) | 2.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 10, 2019, 1 p.m. | 14.1 ppb (13) | 7.7 ppb (7) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 1.0 μg/m3 (4) | 13.0 | |
| July 10, 2019, noon | 26.5 ppb (25) | 16.2 ppb (15) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 3.0 μg/m3 (12) | 25.0 | |
| July 10, 2019, 11 a.m. | 4.9 ppb (5) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 10, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 10, 2019, 9 a.m. | 1.8 ppb (2) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 0.0 μg/m3 (0) | 3.0 | |
| July 10, 2019, 8 a.m. | 1.4 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 0.0 μg/m3 (0) | 3.0 | |
| July 10, 2019, 7 a.m. | 1.9 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 10, 2019, 6 a.m. | 3.1 ppb (3) | 1.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 10, 2019, 5 a.m. | 2.0 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 0.0 μg/m3 (0) | 3.0 | |
| July 10, 2019, 4 a.m. | 3.1 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | -1.0 μg/m3 (0) | 3.0 | |
| July 10, 2019, 3 a.m. | 3.4 ppb (3) | 1.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 10, 2019, 2 a.m. | 6.1 ppb (6) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 10, 2019, 1 a.m. | 10.7 ppb (10) | 5.3 ppb (5) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 10, 2019, midnight | 18.4 ppb (17) | 10.7 ppb (10) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 9, 2019, 11 p.m. | 16.2 ppb (15) | 8.2 ppb (8) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 9, 2019, 10 p.m. | 23.5 ppb (22) | 11.5 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 9, 2019, 9 p.m. | 21.4 ppb (20) | 10.7 ppb (10) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 3.0 μg/m3 (12) | 20.0 | |
| July 9, 2019, 8 p.m. | 13.5 ppb (12) | 6.1 ppb (6) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 2.0 μg/m3 (8) | 12.0 | |
| July 9, 2019, 7 p.m. | 27.1 ppb (25) | 13.9 ppb (13) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 4.0 μg/m3 (17) | 25.0 | |
| July 9, 2019, 6 p.m. | 19.9 ppb (18) | 9.8 ppb (9) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 9, 2019, 5 p.m. | 6.3 ppb (6) | 2.2 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 9, 2019, 4 p.m. | 12.1 ppb (11) | 4.8 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 9, 2019, 3 p.m. | 10.5 ppb (10) | 3.6 ppb (3) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 9, 2019, 2 p.m. | 6.2 ppb (6) | 1.8 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 9, 2019, 1 p.m. | 5.5 ppb (5) | 1.3 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 9, 2019, noon | 6.5 ppb (6) | 1.5 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 9, 2019, 11 a.m. | 4.8 ppb (4) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 9, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 9, 2019, 9 a.m. | 2.7 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 9, 2019, 8 a.m. | 3.3 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 9, 2019, 7 a.m. | 2.1 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 9, 2019, 6 a.m. | 2.1 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 9, 2019, 5 a.m. | 4.6 ppb (4) | 1.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 9, 2019, 4 a.m. | 2.2 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 |