Lakeville MN, US: 44.706123, -93.285803
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 26, 2019, 11 p.m. | 5.2 ppb (5) | 0.5 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 26, 2019, 10 p.m. | 5.5 ppb (5) | 0.8 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 26, 2019, 9 p.m. | 8.4 ppb (8) | 1.9 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 26, 2019, 8 p.m. | 9.4 ppb (9) | 2.4 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 26, 2019, 7 p.m. | 8.5 ppb (8) | 2.2 ppb (2) | 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 26, 2019, 6 p.m. | 7.5 ppb (7) | 1.9 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 26, 2019, 5 p.m. | 8.9 ppb (8) | 2.5 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 26, 2019, 4 p.m. | 6.8 ppb (6) | 1.8 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 26, 2019, 3 p.m. | 6.2 ppb (6) | 1.7 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 1.0 μg/m3 (4) | 6.0 | |
| May 26, 2019, 2 p.m. | 6.4 ppb (6) | 1.8 ppb (2) | 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 26, 2019, 1 p.m. | 8.1 ppb (8) | 2.4 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| May 26, 2019, noon | 7.6 ppb (7) | 1.9 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 26, 2019, 11 a.m. | 14.4 ppb (13) | 7.3 ppb (7) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 26, 2019, 10 a.m. | 6.8 ppb (6) | 0.0 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 26, 2019, 9 a.m. | 12.1 ppb (11) | 2.3 ppb (2) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 26, 2019, 8 a.m. | 9.5 ppb (9) | 1.3 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 26, 2019, 7 a.m. | 6.6 ppb (6) | 0.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| May 26, 2019, 6 a.m. | 4.8 ppb (4) | 0.0 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 26, 2019, 5 a.m. | 3.9 ppb (4) | -0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 26, 2019, 4 a.m. | 3.9 ppb (4) | -0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 26, 2019, 3 a.m. | 3.2 ppb (3) | -0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| May 26, 2019, 2 a.m. | 3.1 ppb (3) | -0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| May 26, 2019, 1 a.m. | 2.1 ppb (2) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 26, 2019, midnight | 0.4 ppb (0) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 25, 2019, 11 p.m. | 0.4 ppb (0) | -0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 25, 2019, 10 p.m. | 0.6 ppb (1) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 25, 2019, 9 p.m. | 0.8 ppb (1) | -0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 25, 2019, 8 p.m. | 0.8 ppb (1) | -0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 25, 2019, 7 p.m. | 0.8 ppb (1) | -0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | -1.0 μg/m3 (0) | 2.0 | |
| May 25, 2019, 6 p.m. | 0.7 ppb (1) | -0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | -2.0 μg/m3 (0) | 2.0 | |
| May 25, 2019, 5 p.m. | 1.0 ppb (1) | -0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 25, 2019, 4 p.m. | 1.0 ppb (1) | -0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 25, 2019, 3 p.m. | 1.1 ppb (1) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 25, 2019, 2 p.m. | 1.2 ppb (1) | -0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | -1.0 μg/m3 (0) | 2.0 | |
| May 25, 2019, 1 p.m. | 1.1 ppb (1) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 25, 2019, noon | 0.8 ppb (1) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 25, 2019, 11 a.m. | 0.6 ppb (1) | -0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 25, 2019, 10 a.m. | 0.8 ppb (1) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 25, 2019, 9 a.m. | 0.7 ppb (1) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 25, 2019, 8 a.m. | 0.3 ppb (0) | -0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 0.0 μg/m3 (0) | 2.0 | |
| May 25, 2019, 7 a.m. | 0.3 ppb (0) | -0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | -1.0 μg/m3 (0) | 2.0 | |
| May 25, 2019, 6 a.m. | 1.6 ppb (1) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 0.0 μg/m3 (0) | 2.0 | |
| May 25, 2019, 5 a.m. | 2.9 ppb (3) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 25, 2019, 4 a.m. | 7.0 ppb (6) | 0.2 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 25, 2019, 3 a.m. | 16.7 ppb (15) | 1.8 ppb (2) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 25, 2019, 2 a.m. | 14.0 ppb (13) | 1.2 ppb (1) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 25, 2019, 1 a.m. | 1.2 ppb (1) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 25, 2019, midnight | 3.4 ppb (3) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 24, 2019, 11 p.m. | 4.4 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 24, 2019, 10 p.m. | 4.7 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 24, 2019, 9 p.m. | 5.4 ppb (5) | 0.9 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 1.0 μg/m3 (4) | 5.0 | |
| May 24, 2019, 8 p.m. | 12.5 ppb (12) | 2.3 ppb (2) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 1.0 μg/m3 (4) | 12.0 | |
| May 24, 2019, 7 p.m. | 24.2 ppb (22) | 9.6 ppb (9) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 0.0 μg/m3 (0) | 22.0 | |
| May 24, 2019, 6 p.m. | 27.2 ppb (25) | 12.9 ppb (12) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | -1.0 μg/m3 (0) | 25.0 | |
| May 24, 2019, 5 p.m. | 22.9 ppb (21) | 12.2 ppb (11) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 3.0 μg/m3 (12) | 21.0 | |
| May 24, 2019, 4 p.m. | 27.5 ppb (25) | 15.5 ppb (14) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 25.0 | |
| May 24, 2019, 3 p.m. | 25.2 ppb (23) | 15.0 ppb (14) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | -1.0 μg/m3 (0) | 23.0 | |
| May 24, 2019, 2 p.m. | 21.4 ppb (20) | 11.7 ppb (11) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 1.0 μg/m3 (4) | 20.0 | |
| May 24, 2019, 1 p.m. | 19.2 ppb (18) | 10.2 ppb (9) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 18.0 | |
| May 24, 2019, noon | 20.6 ppb (19) | 10.7 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 24, 2019, 11 a.m. | 25.5 ppb (24) | 14.1 ppb (13) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 24, 2019, 10 a.m. | 14.4 ppb (13) | 6.4 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 24, 2019, 9 a.m. | 18.2 ppb (17) | 8.0 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 24, 2019, 8 a.m. | 9.2 ppb (9) | 1.8 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 24, 2019, 7 a.m. | 8.8 ppb (8) | 1.9 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 24, 2019, 6 a.m. | 13.0 ppb (12) | 2.9 ppb (3) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 24, 2019, 5 a.m. | 24.1 ppb (22) | 7.2 ppb (7) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 24, 2019, 4 a.m. | 25.1 ppb (23) | 8.1 ppb (8) | 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 24, 2019, 3 a.m. | 30.3 ppb (28) | 9.2 ppb (9) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 6.0 μg/m3 (25) | 28.0 | |
| May 24, 2019, 2 a.m. | 32.0 ppb (30) | 15.0 ppb (14) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| May 24, 2019, 1 a.m. | 3.7 ppb (3) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 24, 2019, midnight | 1.5 ppb (1) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 23, 2019, 11 p.m. | 1.6 ppb (1) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 23, 2019, 10 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 23, 2019, 9 p.m. | 1.7 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 23, 2019, 8 p.m. | 1.4 ppb (1) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| May 23, 2019, 7 p.m. | 1.6 ppb (1) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 23, 2019, 6 p.m. | 1.4 ppb (1) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 23, 2019, 5 p.m. | 1.4 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | -1.0 μg/m3 (0) | 2.0 | |
| May 23, 2019, 4 p.m. | 1.1 ppb (1) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 0.0 μg/m3 (0) | 2.0 | |
| May 23, 2019, 3 p.m. | 1.4 ppb (1) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 23, 2019, 2 p.m. | 1.3 ppb (1) | -0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 23, 2019, 1 p.m. | 1.4 ppb (1) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 23, 2019, noon | 1.3 ppb (1) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | N/A | 2.0 | |
| May 23, 2019, 11 a.m. | 1.0 ppb (1) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | N/A | 2.0 | |
| May 23, 2019, 10 a.m. | 0.4 ppb (0) | -0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | N/A | 2.0 | |
| May 23, 2019, 9 a.m. | 0.4 ppb (0) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 0.0 μg/m3 (0) | 2.0 | |
| May 23, 2019, 8 a.m. | 0.3 ppb (0) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| May 23, 2019, 7 a.m. | 0.2 ppb (0) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| May 23, 2019, 6 a.m. | 0.1 ppb (0) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | -1.0 μg/m3 (0) | 2.0 | |
| May 23, 2019, 5 a.m. | 0.1 ppb (0) | -0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 0.0 μg/m3 (0) | 2.0 | |
| May 23, 2019, 4 a.m. | 0.1 ppb (0) | -0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| May 23, 2019, 3 a.m. | 0.2 ppb (0) | -0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 23, 2019, 2 a.m. | 0.4 ppb (0) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 23, 2019, 1 a.m. | 0.6 ppb (1) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 1.0 | |
| May 23, 2019, midnight | 0.5 ppb (0) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| May 22, 2019, 11 p.m. | 1.6 ppb (1) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 22, 2019, 10 p.m. | 1.8 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 22, 2019, 9 p.m. | 1.3 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 22, 2019, 8 p.m. | 1.3 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 22, 2019, 7 p.m. | 5.6 ppb (5) | 1.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 22, 2019, 6 p.m. | 6.2 ppb (6) | 1.9 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 0.0 μg/m3 (0) | 6.0 | |
| May 22, 2019, 5 p.m. | 2.7 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 22, 2019, 4 p.m. | 7.9 ppb (7) | 2.0 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 22, 2019, 3 p.m. | 39.8 ppb (37) | 20.4 ppb (19) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 7.0 μg/m3 (29) | 37.0 | |
| May 22, 2019, 2 p.m. | 33.7 ppb (31) | 16.9 ppb (16) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 31.0 | |
| May 22, 2019, 1 p.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 22, 2019, noon | 16.3 ppb (15) | 8.3 ppb (8) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 22, 2019, 11 a.m. | 14.5 ppb (13) | 7.5 ppb (7) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 22, 2019, 10 a.m. | 8.7 ppb (8) | 4.0 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 22, 2019, 9 a.m. | 3.5 ppb (3) | 1.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 22, 2019, 8 a.m. | 2.9 ppb (3) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 22, 2019, 7 a.m. | 3.2 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 22, 2019, 6 a.m. | 2.7 ppb (3) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 0.0 μg/m3 (0) | 3.0 | |
| May 22, 2019, 5 a.m. | 3.3 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| May 22, 2019, 4 a.m. | 3.6 ppb (3) | 1.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 22, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 22, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 22, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 22, 2019, midnight | 6.9 ppb (6) | 3.1 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 21, 2019, 11 p.m. | 12.1 ppb (11) | 6.1 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 21, 2019, 10 p.m. | 9.8 ppb (9) | 4.3 ppb (4) | 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 21, 2019, 9 p.m. | 12.2 ppb (11) | 5.8 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 21, 2019, 8 p.m. | 18.8 ppb (17) | 9.6 ppb (9) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 3.0 μg/m3 (12) | 17.0 | |
| May 21, 2019, 7 p.m. | 20.5 ppb (19) | 11.3 ppb (10) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 3.0 μg/m3 (12) | 19.0 | |
| May 21, 2019, 6 p.m. | 17.7 ppb (16) | 9.2 ppb (9) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 21, 2019, 5 p.m. | 17.6 ppb (16) | 9.6 ppb (9) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 21, 2019, 4 p.m. | 19.1 ppb (18) | 10.0 ppb (9) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 4.0 μg/m3 (17) | 18.0 | |
| May 21, 2019, 3 p.m. | 22.1 ppb (20) | 12.1 ppb (11) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 2.0 μg/m3 (8) | 20.0 | |
| May 21, 2019, 2 p.m. | 23.5 ppb (22) | 12.6 ppb (12) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 2.0 μg/m3 (8) | 22.0 | |
| May 21, 2019, 1 p.m. | 38.6 ppb (36) | 22.4 ppb (21) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 36.0 | |
| May 21, 2019, noon | 44.6 ppb (41) | 26.2 ppb (24) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 6.0 μg/m3 (25) | 41.0 | |
| May 21, 2019, 11 a.m. | 53.2 ppb (49) | 32.0 ppb (30) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 49.0 | |
| May 21, 2019, 10 a.m. | 33.4 ppb (31) | 15.2 ppb (14) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 31.0 | |
| May 21, 2019, 9 a.m. | 23.4 ppb (22) | 6.7 ppb (6) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 21, 2019, 8 a.m. | 19.8 ppb (18) | 5.3 ppb (5) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| May 21, 2019, 7 a.m. | 21.8 ppb (20) | 7.2 ppb (7) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 20.0 | |
| May 21, 2019, 6 a.m. | 17.8 ppb (16) | 4.0 ppb (4) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 21, 2019, 5 a.m. | 24.6 ppb (23) | 8.9 ppb (8) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 4.0 μg/m3 (17) | 23.0 | |
| May 21, 2019, 4 a.m. | 24.0 ppb (22) | 8.7 ppb (8) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 21, 2019, 3 a.m. | 35.1 ppb (32) | 13.6 ppb (13) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 21, 2019, 2 a.m. | 30.1 ppb (28) | 9.6 ppb (9) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| May 21, 2019, 1 a.m. | 26.7 ppb (25) | 8.8 ppb (8) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| May 21, 2019, midnight | 23.9 ppb (22) | 8.7 ppb (8) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 20, 2019, 11 p.m. | 33.3 ppb (31) | 15.2 ppb (14) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 7.0 μg/m3 (29) | 31.0 | |
| May 20, 2019, 10 p.m. | 32.2 ppb (30) | 14.9 ppb (14) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 30.0 | |
| May 20, 2019, 9 p.m. | 24.5 ppb (23) | 11.3 ppb (10) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 4.0 μg/m3 (17) | 23.0 | |
| May 20, 2019, 8 p.m. | 23.0 ppb (21) | 10.9 ppb (10) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 4.0 μg/m3 (17) | 21.0 | |
| May 20, 2019, 7 p.m. | 16.8 ppb (16) | 8.0 ppb (7) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 2.0 μg/m3 (8) | 16.0 | |
| May 20, 2019, 6 p.m. | 10.9 ppb (10) | 4.9 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 1.0 μg/m3 (4) | 10.0 | |
| May 20, 2019, 5 p.m. | 14.8 ppb (14) | 7.6 ppb (7) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 3.0 μg/m3 (12) | 14.0 | |
| May 20, 2019, 4 p.m. | 24.8 ppb (23) | 12.6 ppb (12) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 20, 2019, 3 p.m. | 17.5 ppb (16) | 7.9 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 20, 2019, 2 p.m. | 21.1 ppb (20) | 10.7 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 20, 2019, 1 p.m. | 8.4 ppb (8) | 2.6 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 20, 2019, noon | 6.7 ppb (6) | 1.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 20, 2019, 11 a.m. | 3.3 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| May 20, 2019, 10 a.m. | 0.9 ppb (1) | -0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| May 20, 2019, 9 a.m. | 1.2 ppb (1) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| May 20, 2019, 8 a.m. | 2.7 ppb (3) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 20, 2019, 7 a.m. | 2.5 ppb (2) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 20, 2019, 6 a.m. | 13.2 ppb (12) | 3.0 ppb (3) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.0 μg/m3 (8) | 12.0 | |
| May 20, 2019, 5 a.m. | 9.5 ppb (9) | 1.1 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 2.0 μg/m3 (8) | 9.0 | |
| May 20, 2019, 4 a.m. | 4.8 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 20, 2019, 3 a.m. | 3.1 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 20, 2019, 2 a.m. | 3.8 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 20, 2019, 1 a.m. | 4.5 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 20, 2019, midnight | 4.8 ppb (4) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 |