Wilmington DE, US: 39.7394, -75.5581
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 19, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 10.0 ppb (8) | 0.32 ppb (4) | N/A | 19.2 μg/m3 (65) | 65.0 | |
| Jan. 19, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 9.0 ppb (7) | 0.27 ppb (3) | N/A | 20.1 μg/m3 (67) | 67.0 | |
| Jan. 19, 2019, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 2.0 ppb (2) | 0.3 ppb (3) | N/A | 22.8 μg/m3 (73) | 73.0 | |
| Jan. 19, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 4.0 ppb (3) | 0.28 ppb (3) | N/A | 22.0 μg/m3 (71) | 71.0 | |
| Jan. 19, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 8.0 ppb (6) | 0.26 ppb (3) | N/A | 21.3 μg/m3 (70) | 70.0 | |
| Jan. 19, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 9.0 ppb (7) | 0.24 ppb (3) | N/A | 20.5 μg/m3 (68) | 68.0 | |
| Jan. 19, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 14.0 ppb (11) | 0.23 ppb (3) | N/A | 18.3 μg/m3 (63) | 63.0 | |
| Jan. 19, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 16.0 ppb (12) | 0.22 ppb (2) | N/A | 17.4 μg/m3 (61) | 61.0 | |
| Jan. 19, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 9.0 ppb (7) | 0.29 ppb (3) | N/A | 23.9 μg/m3 (75) | 75.0 | |
| Jan. 19, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 2.0 ppb (2) | 0.34 ppb (4) | N/A | 33.9 μg/m3 (97) | 97.0 | |
| Jan. 19, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (1) | 0.38 ppb (4) | N/A | 36.1 μg/m3 (102) | 102.0 | |
| Jan. 19, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (1) | 0.4 ppb (4) | N/A | 37.2 μg/m3 (104) | 104.0 | |
| Jan. 19, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 0.44 ppb (5) | N/A | 36.2 μg/m3 (102) | 102.0 | |
| Jan. 19, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (1) | 0.43 ppb (5) | N/A | 36.4 μg/m3 (102) | 102.0 | |
| Jan. 19, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 2.0 ppb (2) | 0.39 ppb (4) | N/A | 33.6 μg/m3 (96) | 96.0 | |
| Jan. 18, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 5.0 ppb (4) | 0.36 ppb (4) | N/A | 30.3 μg/m3 (89) | 89.0 | |
| Jan. 18, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 8.0 ppb (6) | 0.39 ppb (4) | N/A | 24.6 μg/m3 (77) | 77.0 | |
| Jan. 18, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 15.0 ppb (12) | 0.34 ppb (4) | N/A | 21.7 μg/m3 (71) | 71.0 | |
| Jan. 18, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 16.0 ppb (12) | 0.3 ppb (3) | N/A | 19.1 μg/m3 (65) | 65.0 | |
| Jan. 18, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 19.0 ppb (15) | 0.27 ppb (3) | N/A | 16.7 μg/m3 (60) | 60.0 | |
| Jan. 18, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 15.0 ppb (12) | 0.32 ppb (4) | N/A | 22.4 μg/m3 (72) | 72.0 | |
| Jan. 18, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 8.0 ppb (6) | 0.42 ppb (5) | N/A | 28.1 μg/m3 (84) | 84.0 | |
| Jan. 18, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 6.0 ppb (5) | 0.44 ppb (5) | N/A | 27.6 μg/m3 (83) | 83.0 | |
| Jan. 18, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 6.0 ppb (5) | 0.4 ppb (4) | N/A | 22.4 μg/m3 (72) | 72.0 | |
| Jan. 18, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 5.0 ppb (4) | 0.39 ppb (4) | N/A | 20.3 μg/m3 (68) | 68.0 | |
| Jan. 18, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 3.0 ppb (2) | 0.44 ppb (5) | N/A | 20.0 μg/m3 (67) | 67.0 | |
| Jan. 18, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 4.0 ppb (3) | 0.31 ppb (3) | N/A | 16.7 μg/m3 (60) | 60.0 | |
| Jan. 18, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.25 ppb (3) | N/A | 13.8 μg/m3 (54) | 54.0 | |
| Jan. 18, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.26 ppb (3) | N/A | 11.9 μg/m3 (50) | 50.0 | |
| Jan. 18, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.19 ppb (2) | N/A | 11.3 μg/m3 (47) | 47.0 | |
| Jan. 18, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | 0.16 ppb (2) | N/A | 8.9 μg/m3 (37) | 37.0 | |
| Jan. 18, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | 0.15 ppb (2) | N/A | 8.3 μg/m3 (35) | 35.0 | |
| Jan. 18, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | 0.17 ppb (2) | N/A | 7.8 μg/m3 (32) | 32.0 | |
| Jan. 18, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | 0.18 ppb (2) | N/A | 7.1 μg/m3 (30) | 30.0 | |
| Jan. 18, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | 0.2 ppb (2) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| Jan. 18, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | 0.17 ppb (2) | N/A | 5.4 μg/m3 (23) | 23.0 | |
| Jan. 18, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 26.0 ppb (20) | 0.23 ppb (3) | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Jan. 18, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 23.0 ppb (18) | 0.25 ppb (3) | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Jan. 18, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 25.0 ppb (19) | 0.19 ppb (2) | N/A | 5.7 μg/m3 (24) | 24.0 | |
| Jan. 17, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.24 ppb (3) | N/A | 7.4 μg/m3 (31) | 31.0 | |
| Jan. 17, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 21.0 ppb (16) | 0.3 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 17, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 24.0 ppb (18) | 0.27 ppb (3) | N/A | 7.8 μg/m3 (32) | 32.0 | |
| Jan. 17, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 27.0 ppb (21) | 0.21 ppb (2) | N/A | 7.1 μg/m3 (30) | 30.0 | |
| Jan. 17, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 26.0 ppb (20) | 0.23 ppb (3) | N/A | 7.7 μg/m3 (32) | 32.0 | |
| Jan. 17, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 24.0 ppb (18) | 0.26 ppb (3) | N/A | 8.9 μg/m3 (37) | 37.0 | |
| Jan. 17, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 22.0 ppb (17) | 0.27 ppb (3) | N/A | 9.3 μg/m3 (39) | 39.0 | |
| Jan. 17, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 21.0 ppb (16) | 0.23 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 17, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 24.0 ppb (18) | 0.22 ppb (2) | N/A | 10.3 μg/m3 (43) | 43.0 | |
| Jan. 17, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 25.0 ppb (19) | 0.2 ppb (2) | N/A | 8.7 μg/m3 (36) | 36.0 | |
| Jan. 17, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | 0.25 ppb (3) | N/A | 8.3 μg/m3 (35) | 35.0 | |
| Jan. 17, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 17.0 ppb (13) | 0.28 ppb (3) | N/A | 7.4 μg/m3 (31) | 31.0 | |
| Jan. 17, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.24 ppb (3) | N/A | 6.3 μg/m3 (26) | 26.0 | |
| Jan. 17, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 13.0 ppb (10) | 0.24 ppb (3) | N/A | 7.4 μg/m3 (31) | 31.0 | |
| Jan. 17, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.16 ppb (2) | N/A | 6.2 μg/m3 (26) | 26.0 | |
| Jan. 17, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 23.0 ppb (18) | 0.16 ppb (2) | N/A | 6.6 μg/m3 (28) | 28.0 | |
| Jan. 17, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 16.0 ppb (12) | 0.18 ppb (2) | N/A | 8.6 μg/m3 (36) | 36.0 | |
| Jan. 17, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 7.0 ppb (5) | 0.23 ppb (3) | N/A | 10.4 μg/m3 (43) | 43.0 | |
| Jan. 17, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 13.0 ppb (10) | 0.23 ppb (3) | N/A | 9.8 μg/m3 (41) | 41.0 | |
| Jan. 17, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 13.0 ppb (10) | 0.23 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 17, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 17.0 ppb (13) | 0.2 ppb (2) | N/A | 8.6 μg/m3 (36) | 36.0 | |
| Jan. 17, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.2 ppb (2) | N/A | 8.1 μg/m3 (34) | 34.0 | |
| Jan. 17, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.21 ppb (2) | N/A | 6.3 μg/m3 (26) | 26.0 | |
| Jan. 17, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 18.0 ppb (14) | 0.22 ppb (2) | N/A | 5.2 μg/m3 (22) | 22.0 | |
| Jan. 16, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 14.0 ppb (11) | 0.27 ppb (3) | N/A | 6.5 μg/m3 (27) | 27.0 | |
| Jan. 16, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 16.0 ppb (12) | 0.29 ppb (3) | N/A | 8.4 μg/m3 (35) | 35.0 | |
| Jan. 16, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 18.0 ppb (14) | 0.27 ppb (3) | N/A | 8.5 μg/m3 (35) | 35.0 | |
| Jan. 16, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 20.0 ppb (15) | 0.27 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 16, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 22.0 ppb (17) | N/A | N/A | 14.9 μg/m3 (56) | 56.0 | |
| Jan. 16, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 24.0 ppb (18) | N/A | N/A | 15.8 μg/m3 (58) | 58.0 | |
| Jan. 16, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 10.0 ppb (8) | N/A | N/A | 22.3 μg/m3 (72) | 72.0 | |
| Jan. 16, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 7.0 ppb (5) | N/A | N/A | 23.3 μg/m3 (74) | 74.0 | |
| Jan. 16, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 4.0 ppb (3) | N/A | N/A | 24.8 μg/m3 (77) | 77.0 | |
| Jan. 16, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 2.0 ppb (2) | 1.33 ppb (15) | N/A | 24.5 μg/m3 (77) | 77.0 | |
| Jan. 16, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (1) | 1.29 ppb (14) | N/A | 24.9 μg/m3 (77) | 77.0 | |
| Jan. 16, 2019, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.41 ppb (16) | N/A | 26.9 μg/m3 (82) | 82.0 | |
| Jan. 16, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.22 ppb (14) | N/A | 27.4 μg/m3 (83) | 83.0 | |
| Jan. 16, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.05 ppb (12) | N/A | 28.3 μg/m3 (85) | 85.0 | |
| Jan. 16, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 0.96 ppb (11) | N/A | 29.3 μg/m3 (87) | 87.0 | |
| Jan. 16, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.01 ppb (11) | N/A | 30.2 μg/m3 (89) | 89.0 | |
| Jan. 16, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.26 ppb (14) | N/A | 29.3 μg/m3 (87) | 87.0 | |
| Jan. 16, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.15 ppb (13) | N/A | 27.1 μg/m3 (82) | 82.0 | |
| Jan. 16, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.05 ppb (12) | N/A | 26.3 μg/m3 (80) | 80.0 | |
| Jan. 16, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (1) | 1.33 ppb (15) | N/A | 25.1 μg/m3 (78) | 78.0 | |
| Jan. 16, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (1) | 1.77 ppb (20) | N/A | 25.8 μg/m3 (79) | 79.0 | |
| Jan. 16, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (1) | 1.64 ppb (18) | N/A | 23.5 μg/m3 (74) | 74.0 | |
| Jan. 16, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (1) | 1.34 ppb (15) | N/A | 23.5 μg/m3 (74) | 74.0 | |
| Jan. 16, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 6.0 ppb (5) | 1.02 ppb (11) | N/A | 17.7 μg/m3 (62) | 62.0 | |
| Jan. 15, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.88 ppb (10) | N/A | 15.8 μg/m3 (58) | 58.0 | |
| Jan. 15, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.82 ppb (9) | N/A | 14.8 μg/m3 (56) | 56.0 | |
| Jan. 15, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 26.0 ppb (20) | 0.66 ppb (7) | N/A | 13.6 μg/m3 (53) | 53.0 | |
| Jan. 15, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 27.0 ppb (21) | 0.65 ppb (7) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| Jan. 15, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 28.0 ppb (22) | 0.62 ppb (7) | N/A | 15.3 μg/m3 (57) | 57.0 | |
| Jan. 15, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 18.2 μg/m3 (63) | 63.0 | |
| Jan. 15, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 15.9 μg/m3 (58) | 58.0 | |
| Jan. 15, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 0.67 ppb (7) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| Jan. 15, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 18.0 ppb (14) | 0.69 ppb (8) | N/A | 12.5 μg/m3 (51) | 51.0 | |
| Jan. 15, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 16.0 ppb (12) | 0.81 ppb (9) | N/A | 14.6 μg/m3 (56) | 56.0 | |
| Jan. 15, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 5.0 ppb (4) | 1.2 ppb (13) | N/A | 18.6 μg/m3 (64) | 64.0 | |
| Jan. 15, 2019, noon | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | 0.0 ppb (0) | 1.52 ppb (17) | N/A | 17.9 μg/m3 (63) | 63.0 | |
| Jan. 15, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.15 ppb (13) | N/A | 17.4 μg/m3 (61) | 61.0 | |
| Jan. 15, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (1) | 0.89 ppb (10) | N/A | 16.6 μg/m3 (60) | 60.0 | |
| Jan. 15, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 0.82 ppb (9) | N/A | 15.6 μg/m3 (58) | 58.0 | |
| Jan. 15, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (1) | 0.84 ppb (9) | N/A | 15.2 μg/m3 (57) | 57.0 | |
| Jan. 15, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 3.0 ppb (2) | 0.84 ppb (9) | N/A | 14.9 μg/m3 (56) | 56.0 | |
| Jan. 15, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.03 ppb (11) | N/A | 15.7 μg/m3 (58) | 58.0 | |
| Jan. 15, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.07 ppb (12) | N/A | 15.7 μg/m3 (58) | 58.0 | |
| Jan. 15, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (1) | 1.04 ppb (12) | N/A | 16.4 μg/m3 (59) | 59.0 | |
| Jan. 15, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.21 ppb (13) | N/A | 20.2 μg/m3 (67) | 67.0 | |
| Jan. 15, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 1.26 ppb (14) | N/A | 18.4 μg/m3 (64) | 64.0 | |
| Jan. 15, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 2.0 ppb (2) | 1.05 ppb (12) | N/A | 13.6 μg/m3 (53) | 53.0 | |
| Jan. 15, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 7.0 ppb (5) | 0.96 ppb (11) | N/A | 10.4 μg/m3 (43) | 43.0 | |
| Jan. 14, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 9.0 ppb (7) | 0.84 ppb (9) | N/A | 9.6 μg/m3 (40) | 40.0 | |
| Jan. 14, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.83 ppb (9) | N/A | 8.7 μg/m3 (36) | 36.0 | |
| Jan. 14, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.76 ppb (8) | N/A | 6.7 μg/m3 (28) | 28.0 | |
| Jan. 14, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | 0.66 ppb (7) | N/A | 5.6 μg/m3 (23) | 23.0 | |
| Jan. 14, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | 0.62 ppb (7) | N/A | 5.8 μg/m3 (24) | 24.0 | |
| Jan. 14, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | 0.64 ppb (7) | N/A | 5.7 μg/m3 (24) | 24.0 | |
| Jan. 14, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | 0.66 ppb (7) | N/A | 5.3 μg/m3 (22) | 22.0 | |
| Jan. 14, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 5.4 μg/m3 (23) | 23.0 | |
| Jan. 14, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 14, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.62 ppb (7) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| Jan. 14, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.69 ppb (8) | N/A | 6.4 μg/m3 (27) | 27.0 | |
| Jan. 14, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.72 ppb (8) | N/A | 6.7 μg/m3 (28) | 28.0 | |
| Jan. 14, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.58 ppb (6) | N/A | 6.7 μg/m3 (28) | 28.0 | |
| Jan. 14, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.54 ppb (6) | N/A | 6.1 μg/m3 (25) | 25.0 | |
| Jan. 14, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.51 ppb (6) | N/A | 6.1 μg/m3 (25) | 25.0 | |
| Jan. 14, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | 0.49 ppb (5) | N/A | 5.4 μg/m3 (23) | 23.0 | |
| Jan. 14, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.51 ppb (6) | N/A | 5.7 μg/m3 (24) | 24.0 | |
| Jan. 14, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.54 ppb (6) | N/A | 5.7 μg/m3 (24) | 24.0 | |
| Jan. 14, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 0.55 ppb (6) | N/A | 5.6 μg/m3 (23) | 23.0 | |
| Jan. 14, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 0.58 ppb (6) | N/A | 5.8 μg/m3 (24) | 24.0 | |
| Jan. 14, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.64 ppb (7) | N/A | 6.7 μg/m3 (28) | 28.0 | |
| Jan. 14, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.68 ppb (8) | N/A | 6.8 μg/m3 (28) | 28.0 | |
| Jan. 14, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | 0.71 ppb (8) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 14, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.71 ppb (8) | N/A | 9.1 μg/m3 (38) | 38.0 | |
| Jan. 13, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | 0.71 ppb (8) | N/A | 7.8 μg/m3 (32) | 32.0 | |
| Jan. 13, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | 0.72 ppb (8) | N/A | 7.6 μg/m3 (32) | 32.0 | |
| Jan. 13, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.7 ppb (8) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 13, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.7 ppb (8) | N/A | 7.3 μg/m3 (30) | 30.0 | |
| Jan. 13, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.67 ppb (7) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 13, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 18.0 ppb (14) | 0.69 ppb (8) | N/A | 9.6 μg/m3 (40) | 40.0 | |
| Jan. 13, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.73 ppb (8) | N/A | 10.3 μg/m3 (43) | 43.0 | |
| Jan. 13, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.74 ppb (8) | N/A | 11.3 μg/m3 (47) | 47.0 | |
| Jan. 13, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 13.0 ppb (10) | 0.74 ppb (8) | N/A | 10.9 μg/m3 (45) | 45.0 | |
| Jan. 13, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.72 ppb (8) | N/A | 11.2 μg/m3 (47) | 47.0 | |
| Jan. 13, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 10.0 ppb (8) | 0.73 ppb (8) | N/A | 13.3 μg/m3 (53) | 53.0 | |
| Jan. 13, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.71 ppb (8) | N/A | 11.6 μg/m3 (48) | 48.0 | |
| Jan. 13, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | 0.62 ppb (7) | N/A | 8.7 μg/m3 (36) | 36.0 | |
| Jan. 13, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 0.56 ppb (6) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 13, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 17.0 ppb (13) | 0.55 ppb (6) | N/A | 7.9 μg/m3 (33) | 33.0 | |
| Jan. 13, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.59 ppb (7) | N/A | 8.7 μg/m3 (36) | 36.0 | |
| Jan. 13, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 17.0 ppb (13) | 0.59 ppb (7) | N/A | 9.1 μg/m3 (38) | 38.0 | |
| Jan. 13, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.57 ppb (6) | N/A | 8.8 μg/m3 (37) | 37.0 | |
| Jan. 13, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | 0.54 ppb (6) | N/A | 9.4 μg/m3 (39) | 39.0 | |
| Jan. 13, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 0.53 ppb (6) | N/A | 9.6 μg/m3 (40) | 40.0 | |
| Jan. 13, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | 0.65 ppb (7) | N/A | 10.5 μg/m3 (44) | 44.0 | |
| Jan. 13, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | 0.67 ppb (7) | N/A | 9.7 μg/m3 (40) | 40.0 | |
| Jan. 13, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.58 ppb (6) | N/A | 7.5 μg/m3 (31) | 31.0 | |
| Jan. 13, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 21.0 ppb (16) | 0.55 ppb (6) | N/A | 5.5 μg/m3 (23) | 23.0 | |
| Jan. 12, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 16.0 ppb (12) | 0.59 ppb (7) | N/A | 5.5 μg/m3 (23) | 23.0 | |
| Jan. 12, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 17.0 ppb (13) | 0.6 ppb (7) | N/A | 5.6 μg/m3 (23) | 23.0 | |
| Jan. 12, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 22.0 ppb (17) | 0.56 ppb (6) | N/A | 5.4 μg/m3 (23) | 23.0 | |
| Jan. 12, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 23.0 ppb (18) | 0.57 ppb (6) | N/A | 5.1 μg/m3 (21) | 21.0 | |
| Jan. 12, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 23.0 ppb (18) | 0.54 ppb (6) | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Jan. 12, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 26.0 ppb (20) | 0.52 ppb (6) | N/A | 4.6 μg/m3 (19) | 20.0 | |
| Jan. 12, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 27.0 ppb (21) | 0.54 ppb (6) | N/A | 4.7 μg/m3 (20) | 21.0 | |
| Jan. 12, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 23.0 ppb (18) | 0.58 ppb (6) | N/A | 4.7 μg/m3 (20) | 20.0 | |
| Jan. 12, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (21) | 0.52 ppb (6) | N/A | 3.4 μg/m3 (14) | 21.0 |