Oakland (Nimitz Fwy) CA, US: 37.793624, -122.263376
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 19, 2019, 8 a.m. | 8.1 ppb (8) | 1.7 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 19, 2019, 7 a.m. | 5.3 ppb (5) | 1.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 19, 2019, 6 a.m. | 5.7 ppb (5) | 1.2 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 19, 2019, 5 a.m. | 6.9 ppb (6) | 1.3 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 19, 2019, 4 a.m. | 6.5 ppb (6) | 1.1 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 19, 2019, 3 a.m. | 8.3 ppb (8) | 1.3 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 19, 2019, 2 a.m. | 6.4 ppb (6) | 0.6 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 19, 2019, 1 a.m. | 6.1 ppb (6) | 1.1 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 19, 2019, midnight | 7.4 ppb (7) | 1.5 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 18, 2019, 11 p.m. | 5.6 ppb (5) | 0.9 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 18, 2019, 10 p.m. | 6.4 ppb (6) | 1.7 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 18, 2019, 9 p.m. | 10.4 ppb (10) | 2.8 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 18, 2019, 8 p.m. | 8.9 ppb (8) | 1.5 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 18, 2019, 7 p.m. | 12.1 ppb (11) | 2.9 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2019, 6 p.m. | 14.6 ppb (14) | 6.3 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2019, 5 p.m. | 16.8 ppb (16) | 7.1 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 3.0 μg/m3 (12) | 16.0 | |
| May 18, 2019, 4 p.m. | 19.0 ppb (18) | 8.1 ppb (8) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 3.0 μg/m3 (12) | 18.0 | |
| May 18, 2019, 3 p.m. | 20.8 ppb (19) | 8.4 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 18, 2019, 2 p.m. | 20.2 ppb (19) | 6.9 ppb (6) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 18, 2019, 1 p.m. | 14.9 ppb (14) | 2.1 ppb (2) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 1.0 μg/m3 (4) | 14.0 | |
| May 18, 2019, noon | 12.6 ppb (12) | 1.2 ppb (1) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 2.0 μg/m3 (8) | 12.0 | |
| May 18, 2019, 11 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 | |
| May 18, 2019, 10 a.m. | 9.2 ppb (9) | 1.6 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 18, 2019, 9 a.m. | 13.1 ppb (12) | 1.6 ppb (1) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 18, 2019, 8 a.m. | 13.9 ppb (13) | 2.2 ppb (2) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 2.0 μg/m3 (8) | 13.0 | |
| May 18, 2019, 7 a.m. | 13.1 ppb (12) | 2.6 ppb (2) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 18, 2019, 6 a.m. | 14.5 ppb (13) | 3.4 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 3.0 μg/m3 (12) | 13.0 | |
| May 18, 2019, 5 a.m. | 12.8 ppb (12) | 2.9 ppb (3) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 18, 2019, 4 a.m. | 14.3 ppb (13) | 4.2 ppb (4) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 3.0 μg/m3 (12) | 13.0 | |
| May 18, 2019, 3 a.m. | 13.7 ppb (13) | 4.2 ppb (4) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 18, 2019, 2 a.m. | 17.9 ppb (17) | 6.0 ppb (6) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 18, 2019, 1 a.m. | 24.6 ppb (23) | 9.2 ppb (9) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 18, 2019, midnight | 20.1 ppb (19) | 9.8 ppb (9) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 17, 2019, 11 p.m. | 21.7 ppb (20) | 10.0 ppb (9) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 3.0 μg/m3 (12) | 20.0 | |
| May 17, 2019, 10 p.m. | 23.4 ppb (22) | 11.4 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 4.0 μg/m3 (17) | 22.0 | |
| May 17, 2019, 9 p.m. | 23.6 ppb (22) | 11.4 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 5.0 μg/m3 (21) | 22.0 | |
| May 17, 2019, 8 p.m. | 20.4 ppb (19) | 10.4 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 19.0 | |
| May 17, 2019, 7 p.m. | 28.1 ppb (26) | 12.9 ppb (12) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 26.0 | |
| May 17, 2019, 6 p.m. | 38.9 ppb (36) | 19.0 ppb (18) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 17, 2019, 5 p.m. | 35.3 ppb (33) | 16.4 ppb (15) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 17, 2019, 4 p.m. | 32.7 ppb (30) | 15.2 ppb (14) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 7.0 μg/m3 (29) | 30.0 | |
| May 17, 2019, 3 p.m. | 18.1 ppb (17) | 7.0 ppb (6) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 17, 2019, 2 p.m. | 20.6 ppb (19) | 6.9 ppb (6) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 17, 2019, 1 p.m. | 36.3 ppb (34) | 12.7 ppb (12) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 7.0 μg/m3 (29) | 34.0 | |
| May 17, 2019, noon | 36.6 ppb (34) | 12.6 ppb (12) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 8.0 μg/m3 (33) | 34.0 | |
| May 17, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 17, 2019, 10 a.m. | 17.2 ppb (16) | 4.1 ppb (4) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 17, 2019, 9 a.m. | 14.2 ppb (13) | 3.2 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 17, 2019, 8 a.m. | 13.5 ppb (12) | 2.0 ppb (2) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 17, 2019, 7 a.m. | 19.0 ppb (18) | 3.6 ppb (3) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 17, 2019, 6 a.m. | 12.2 ppb (11) | 1.9 ppb (2) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 17, 2019, 5 a.m. | 11.4 ppb (11) | 2.7 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 17, 2019, 4 a.m. | 14.2 ppb (13) | 3.8 ppb (4) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 17, 2019, 3 a.m. | 18.8 ppb (17) | 5.8 ppb (5) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| May 17, 2019, 2 a.m. | 17.7 ppb (16) | 4.5 ppb (4) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| May 17, 2019, 1 a.m. | 19.5 ppb (18) | 6.8 ppb (6) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 17, 2019, midnight | 17.6 ppb (16) | 7.6 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 16, 2019, 11 p.m. | 19.6 ppb (18) | 9.4 ppb (9) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 16, 2019, 10 p.m. | 17.4 ppb (16) | 8.8 ppb (8) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 16, 2019, 9 p.m. | 28.3 ppb (26) | 12.3 ppb (11) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| May 16, 2019, 8 p.m. | 26.4 ppb (24) | 12.7 ppb (12) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| May 16, 2019, 7 p.m. | 26.2 ppb (24) | 13.4 ppb (12) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 16, 2019, 6 p.m. | 23.0 ppb (21) | 10.4 ppb (10) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 16, 2019, 5 p.m. | 23.4 ppb (22) | 11.5 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 4.0 μg/m3 (17) | 22.0 | |
| May 16, 2019, 4 p.m. | 27.7 ppb (26) | 13.2 ppb (12) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 2.0 μg/m3 (8) | 26.0 | |
| May 16, 2019, 3 p.m. | 28.4 ppb (26) | 14.8 ppb (14) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 26.0 | |
| May 16, 2019, 2 p.m. | 27.2 ppb (25) | 12.9 ppb (12) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 16, 2019, 1 p.m. | 20.2 ppb (19) | 9.0 ppb (8) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 16, 2019, noon | 14.5 ppb (13) | 6.2 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2019, 11 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 | |
| May 16, 2019, 10 a.m. | 6.8 ppb (6) | 2.3 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 16, 2019, 9 a.m. | 5.5 ppb (5) | 1.4 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 16, 2019, 8 a.m. | 5.6 ppb (5) | 1.3 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 16, 2019, 7 a.m. | 6.5 ppb (6) | 1.9 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2019, 6 a.m. | 9.4 ppb (9) | 2.0 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2019, 5 a.m. | 7.7 ppb (7) | 2.3 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 16, 2019, 4 a.m. | 8.1 ppb (8) | 3.2 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2019, 3 a.m. | 8.6 ppb (8) | 3.5 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 16, 2019, 2 a.m. | 9.5 ppb (9) | 3.7 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2019, 1 a.m. | 16.7 ppb (15) | 7.9 ppb (7) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2019, midnight | 18.4 ppb (17) | 11.0 ppb (10) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| May 15, 2019, 11 p.m. | 21.7 ppb (20) | 11.7 ppb (11) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 15, 2019, 10 p.m. | 26.4 ppb (24) | 13.4 ppb (12) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 4.0 μg/m3 (17) | 24.0 | |
| May 15, 2019, 9 p.m. | 22.4 ppb (21) | 11.5 ppb (11) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 2.0 μg/m3 (8) | 21.0 | |
| May 15, 2019, 8 p.m. | 29.1 ppb (27) | 15.0 ppb (14) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 3.0 μg/m3 (12) | 27.0 | |
| May 15, 2019, 7 p.m. | 28.1 ppb (26) | 13.6 ppb (13) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 5.0 μg/m3 (21) | 26.0 | |
| May 15, 2019, 6 p.m. | 50.7 ppb (47) | 29.8 ppb (28) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 4.0 μg/m3 (17) | 47.0 | |
| May 15, 2019, 5 p.m. | 56.8 ppb (53) | 34.7 ppb (32) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 5.0 μg/m3 (21) | 53.0 | |
| May 15, 2019, 4 p.m. | 32.7 ppb (30) | 13.9 ppb (13) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 6.0 μg/m3 (25) | 30.0 | |
| May 15, 2019, 3 p.m. | 34.5 ppb (32) | 14.7 ppb (14) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 6.0 μg/m3 (25) | 32.0 | |
| May 15, 2019, 2 p.m. | 31.3 ppb (29) | 14.5 ppb (13) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 6.0 μg/m3 (25) | 29.0 | |
| May 15, 2019, 1 p.m. | 27.5 ppb (25) | 11.0 ppb (10) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 15, 2019, noon | 34.2 ppb (32) | 15.8 ppb (15) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 6.0 μg/m3 (25) | 32.0 | |
| May 15, 2019, 11 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 | |
| May 15, 2019, 10 a.m. | 12.7 ppb (12) | 3.1 ppb (3) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 15, 2019, 9 a.m. | 8.5 ppb (8) | 2.1 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 15, 2019, 8 a.m. | 6.6 ppb (6) | 1.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 15, 2019, 7 a.m. | 6.7 ppb (6) | 2.0 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 15, 2019, 6 a.m. | 9.3 ppb (9) | 2.7 ppb (3) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 15, 2019, 5 a.m. | 11.9 ppb (11) | 3.5 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 15, 2019, 4 a.m. | 17.5 ppb (16) | 5.1 ppb (5) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 15, 2019, 3 a.m. | 13.2 ppb (12) | 4.4 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 15, 2019, 2 a.m. | 23.3 ppb (22) | 7.1 ppb (7) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 5.0 μg/m3 (21) | 22.0 | |
| May 15, 2019, 1 a.m. | 31.8 ppb (29) | 13.9 ppb (13) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 4.0 μg/m3 (17) | 29.0 | |
| May 15, 2019, midnight | 34.0 ppb (31) | 15.7 ppb (15) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 4.0 μg/m3 (17) | 31.0 | |
| May 14, 2019, 11 p.m. | 31.8 ppb (29) | 16.3 ppb (15) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 5.0 μg/m3 (21) | 29.0 | |
| May 14, 2019, 10 p.m. | 33.1 ppb (31) | 17.8 ppb (16) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 5.0 μg/m3 (21) | 31.0 | |
| May 14, 2019, 9 p.m. | 31.6 ppb (29) | 16.4 ppb (15) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 5.0 μg/m3 (21) | 29.0 | |
| May 14, 2019, 8 p.m. | 29.1 ppb (27) | 14.5 ppb (13) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 27.0 | |
| May 14, 2019, 7 p.m. | 29.2 ppb (27) | 15.4 ppb (14) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 27.0 | |
| May 14, 2019, 6 p.m. | 33.1 ppb (31) | 16.3 ppb (15) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 31.0 | |
| May 14, 2019, 5 p.m. | 40.3 ppb (37) | 21.0 ppb (19) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 8.0 μg/m3 (33) | 37.0 | |
| May 14, 2019, 4 p.m. | 43.1 ppb (40) | 21.3 ppb (20) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 7.0 μg/m3 (29) | 40.0 | |
| May 14, 2019, 3 p.m. | 37.1 ppb (34) | 16.6 ppb (15) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 34.0 | |
| May 14, 2019, 2 p.m. | 42.4 ppb (39) | 18.9 ppb (18) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 4.0 μg/m3 (17) | 39.0 | |
| May 14, 2019, 1 p.m. | 32.6 ppb (30) | 13.4 ppb (12) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 3.0 μg/m3 (12) | 30.0 | |
| May 14, 2019, noon | 24.0 ppb (22) | 9.5 ppb (9) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 14, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 14, 2019, 10 a.m. | 18.5 ppb (17) | 4.6 ppb (4) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2019, 9 a.m. | 11.6 ppb (11) | 3.2 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2019, 8 a.m. | 5.7 ppb (5) | 1.4 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | -1.0 μg/m3 (0) | 5.0 | |
| May 14, 2019, 7 a.m. | 8.0 ppb (7) | 1.7 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 14, 2019, 6 a.m. | 7.1 ppb (7) | 2.5 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 14, 2019, 5 a.m. | 10.6 ppb (10) | 3.8 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 14, 2019, 4 a.m. | 10.8 ppb (10) | 3.3 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 14, 2019, 3 a.m. | 13.4 ppb (12) | 5.0 ppb (5) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 2.0 μg/m3 (8) | 12.0 | |
| May 14, 2019, 2 a.m. | 14.3 ppb (13) | 5.9 ppb (5) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2019, 1 a.m. | 16.0 ppb (15) | 8.0 ppb (7) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 3.0 μg/m3 (12) | 15.0 | |
| May 14, 2019, midnight | 23.7 ppb (22) | 12.1 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 3.0 μg/m3 (12) | 22.0 | |
| May 13, 2019, 11 p.m. | 26.8 ppb (25) | 14.5 ppb (13) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 5.0 μg/m3 (21) | 25.0 | |
| May 13, 2019, 10 p.m. | 26.7 ppb (25) | 15.1 ppb (14) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 13, 2019, 9 p.m. | 31.8 ppb (29) | 17.2 ppb (16) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 13, 2019, 8 p.m. | 30.2 ppb (28) | 15.6 ppb (14) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 5.0 μg/m3 (21) | 28.0 | |
| May 13, 2019, 7 p.m. | 34.8 ppb (32) | 19.4 ppb (18) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 32.0 | |
| May 13, 2019, 6 p.m. | 47.3 ppb (44) | 27.1 ppb (25) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 7.0 μg/m3 (29) | 44.0 | |
| May 13, 2019, 5 p.m. | 34.8 ppb (32) | 18.1 ppb (17) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| May 13, 2019, 4 p.m. | 41.0 ppb (38) | 21.0 ppb (19) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 38.0 | |
| May 13, 2019, 3 p.m. | 36.7 ppb (34) | 20.2 ppb (19) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 8.0 μg/m3 (33) | 34.0 | |
| May 13, 2019, 2 p.m. | 42.1 ppb (39) | 20.4 ppb (19) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 8.0 μg/m3 (33) | 39.0 | |
| May 13, 2019, 1 p.m. | 30.0 ppb (28) | 14.2 ppb (13) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 6.0 μg/m3 (25) | 28.0 | |
| May 13, 2019, noon | 21.0 ppb (19) | 9.2 ppb (9) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 13, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 13, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 13, 2019, 9 a.m. | 6.7 ppb (6) | 2.3 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 13, 2019, 8 a.m. | 5.5 ppb (5) | 1.7 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 13, 2019, 7 a.m. | 5.6 ppb (5) | 1.7 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 13, 2019, 6 a.m. | 5.1 ppb (5) | 2.3 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 13, 2019, 5 a.m. | 7.1 ppb (7) | 2.8 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 13, 2019, 4 a.m. | 7.6 ppb (7) | 2.9 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 13, 2019, 3 a.m. | 10.1 ppb (9) | 3.4 ppb (3) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 13, 2019, 2 a.m. | 10.8 ppb (10) | 3.9 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 13, 2019, 1 a.m. | 8.4 ppb (8) | 4.0 ppb (4) | 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 | |
| May 13, 2019, midnight | 8.3 ppb (8) | 4.1 ppb (4) | 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 | |
| May 12, 2019, 11 p.m. | 11.3 ppb (10) | 5.5 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 12, 2019, 10 p.m. | 10.4 ppb (10) | 4.8 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 12, 2019, 9 p.m. | 9.2 ppb (9) | 4.6 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 12, 2019, 8 p.m. | 11.2 ppb (10) | 5.1 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 12, 2019, 7 p.m. | 10.6 ppb (10) | 5.2 ppb (5) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 12, 2019, 6 p.m. | 12.2 ppb (11) | 5.5 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 12, 2019, 5 p.m. | 12.2 ppb (11) | 5.0 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| May 12, 2019, 4 p.m. | 12.2 ppb (11) | 4.3 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| May 12, 2019, 3 p.m. | 13.5 ppb (12) | 4.4 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 12, 2019, 2 p.m. | 12.6 ppb (12) | 4.0 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| May 12, 2019, 1 p.m. | 9.6 ppb (9) | 2.9 ppb (3) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 12, 2019, noon | 7.4 ppb (7) | 2.0 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 12, 2019, 11 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 | |
| May 12, 2019, 10 a.m. | 4.1 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 12, 2019, 9 a.m. | 3.2 ppb (3) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 |