Seattle (Little Saigon) WA, US: 47.597222, -122.319722
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| July 10, 2020, 7 p.m. | 39.3 ppb (36) | 25.5 ppb (24) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 5.0 μg/m3 (21) | 36.0 | |
| July 10, 2020, 6 p.m. | 44.1 ppb (41) | 29.9 ppb (28) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 5.0 μg/m3 (21) | 41.0 | |
| July 10, 2020, 5 p.m. | 40.8 ppb (38) | 28.1 ppb (26) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 4.0 μg/m3 (17) | 38.0 | |
| July 10, 2020, 4 p.m. | 48.2 ppb (45) | 30.4 ppb (28) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 5.0 μg/m3 (21) | 45.0 | |
| July 10, 2020, 3 p.m. | 53.5 ppb (50) | 36.6 ppb (34) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 8.0 μg/m3 (33) | 50.0 | |
| July 10, 2020, 2 p.m. | 57.8 ppb (54) | 35.9 ppb (33) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 7.0 μg/m3 (29) | 54.0 | |
| July 10, 2020, 1 p.m. | 58.0 ppb (54) | 38.9 ppb (36) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 7.0 μg/m3 (29) | 54.0 | |
| July 10, 2020, noon | 72.2 ppb (69) | 50.2 ppb (46) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.65 ppb (7) | N/A | 7.0 μg/m3 (29) | 69.0 | |
| July 10, 2020, 11 a.m. | 38.1 ppb (35) | 21.3 ppb (20) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 35.0 | |
| July 10, 2020, 10 a.m. | 30.9 ppb (29) | 12.8 ppb (12) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 6.0 μg/m3 (25) | 29.0 | |
| July 10, 2020, 9 a.m. | 5.8 ppb (5) | 1.1 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.13 ppb (1) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 10, 2020, 8 a.m. | 4.2 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.12 ppb (1) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 10, 2020, 7 a.m. | 5.3 ppb (5) | 0.5 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.11 ppb (1) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 10, 2020, 6 a.m. | 4.7 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.11 ppb (1) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 10, 2020, 5 a.m. | 5.6 ppb (5) | 0.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 10, 2020, 4 a.m. | 6.3 ppb (6) | 0.8 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 10, 2020, 3 a.m. | 11.1 ppb (10) | 3.2 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 0.0 μg/m3 (0) | 10.0 | |
| July 10, 2020, 2 a.m. | 20.8 ppb (19) | 11.1 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 3.0 μg/m3 (12) | 19.0 | |
| July 10, 2020, 1 a.m. | 36.5 ppb (34) | 23.4 ppb (22) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 7.0 μg/m3 (29) | 34.0 | |
| July 10, 2020, midnight | 38.8 ppb (36) | 25.8 ppb (24) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 7.0 μg/m3 (29) | 36.0 | |
| July 9, 2020, 11 p.m. | 34.0 ppb (31) | 23.1 ppb (21) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 6.0 μg/m3 (25) | 31.0 | |
| July 9, 2020, 10 p.m. | 32.5 ppb (30) | 22.6 ppb (21) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 30.0 | |
| July 9, 2020, 9 p.m. | 39.2 ppb (36) | 26.8 ppb (25) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 5.0 μg/m3 (21) | 36.0 | |
| July 9, 2020, 8 p.m. | 34.8 ppb (32) | 24.3 ppb (23) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 5.0 μg/m3 (21) | 32.0 | |
| July 9, 2020, 7 p.m. | 35.1 ppb (32) | 22.8 ppb (21) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 5.0 μg/m3 (21) | 32.0 | |
| July 9, 2020, 6 p.m. | 43.8 ppb (41) | 28.9 ppb (27) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 6.0 μg/m3 (25) | 41.0 | |
| July 9, 2020, 5 p.m. | 53.4 ppb (49) | 38.6 ppb (36) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 5.0 μg/m3 (21) | 49.0 | |
| July 9, 2020, 4 p.m. | 59.3 ppb (56) | 42.6 ppb (39) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 6.0 μg/m3 (25) | 56.0 | |
| July 9, 2020, 3 p.m. | 69.7 ppb (67) | 50.0 ppb (46) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 8.0 μg/m3 (33) | 67.0 | |
| July 9, 2020, 2 p.m. | 77.2 ppb (75) | 52.1 ppb (48) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 5.0 μg/m3 (21) | 75.0 | |
| July 9, 2020, 1 p.m. | 121.3 ppb (104) | 94.9 ppb (94) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 6.0 μg/m3 (25) | 104.0 | |
| July 9, 2020, noon | 38.2 ppb (35) | 23.8 ppb (22) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 5.0 μg/m3 (21) | 35.0 | |
| July 9, 2020, 11 a.m. | 22.6 ppb (21) | 13.0 ppb (12) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 21.0 | |
| July 9, 2020, 10 a.m. | 3.3 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.09 ppb (1) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 9, 2020, 9 a.m. | 3.7 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.11 ppb (1) | N/A | 0.0 μg/m3 (0) | 3.0 | |
| July 9, 2020, 8 a.m. | 3.8 ppb (4) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.09 ppb (1) | N/A | -2.0 μg/m3 (0) | 4.0 | |
| July 9, 2020, 7 a.m. | 4.3 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.09 ppb (1) | N/A | 0.0 μg/m3 (0) | 4.0 | |
| July 9, 2020, 6 a.m. | 5.5 ppb (5) | 0.7 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.11 ppb (1) | N/A | 0.0 μg/m3 (0) | 5.0 | |
| July 9, 2020, 5 a.m. | 10.5 ppb (10) | 2.0 ppb (2) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 0.0 μg/m3 (0) | 10.0 | |
| July 9, 2020, 4 a.m. | 10.4 ppb (10) | 1.3 ppb (1) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 9, 2020, 3 a.m. | 28.5 ppb (26) | 12.6 ppb (12) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 9, 2020, 2 a.m. | 32.4 ppb (30) | 17.0 ppb (16) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 4.0 μg/m3 (17) | 30.0 | |
| July 9, 2020, 1 a.m. | 38.0 ppb (35) | 21.1 ppb (20) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 7.0 μg/m3 (29) | 35.0 | |
| July 9, 2020, midnight | 40.9 ppb (38) | 24.9 ppb (23) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.57 ppb (6) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 8, 2020, 11 p.m. | 30.6 ppb (28) | 18.7 ppb (17) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 3.0 μg/m3 (12) | 28.0 | |
| July 8, 2020, 10 p.m. | 36.6 ppb (34) | 22.4 ppb (21) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 3.0 μg/m3 (12) | 34.0 | |
| July 8, 2020, 9 p.m. | 38.4 ppb (36) | 25.0 ppb (23) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 7.0 μg/m3 (29) | 36.0 | |
| July 8, 2020, 8 p.m. | 49.2 ppb (46) | 33.3 ppb (31) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 10.0 μg/m3 (42) | 46.0 | |
| July 8, 2020, 7 p.m. | 46.7 ppb (43) | 28.6 ppb (26) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 5.0 μg/m3 (21) | 43.0 | |
| July 8, 2020, 6 p.m. | 47.7 ppb (44) | 33.2 ppb (31) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 6.0 μg/m3 (25) | 44.0 | |
| July 8, 2020, 4 p.m. | 51.8 ppb (48) | 37.3 ppb (35) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| July 8, 2020, 3 p.m. | 61.7 ppb (58) | 42.8 ppb (40) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 6.0 μg/m3 (25) | 58.0 | |
| July 8, 2020, 2 p.m. | 69.9 ppb (67) | 53.1 ppb (49) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 4.0 μg/m3 (17) | 67.0 | |
| July 8, 2020, 1 p.m. | 11.5 ppb (11) | 4.5 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 8, 2020, noon | 27.8 ppb (26) | 17.0 ppb (16) | 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 8, 2020, 11 a.m. | 6.0 ppb (6) | 0.7 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 8, 2020, 10 a.m. | 5.9 ppb (5) | 0.3 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 8, 2020, 9 a.m. | 10.1 ppb (9) | 1.3 ppb (1) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 8, 2020, 8 a.m. | 18.6 ppb (17) | 4.7 ppb (4) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 8, 2020, 7 a.m. | 15.4 ppb (14) | 2.9 ppb (3) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 14.0 | |
| July 8, 2020, 6 a.m. | 6.7 ppb (6) | 0.6 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 8, 2020, 5 a.m. | 6.0 ppb (6) | 0.8 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 8, 2020, 4 a.m. | 5.1 ppb (5) | 0.4 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 8, 2020, 3 a.m. | 6.8 ppb (6) | 1.1 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 1.0 μg/m3 (4) | 6.0 | |
| July 8, 2020, 2 a.m. | 7.3 ppb (7) | 1.7 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 1.0 μg/m3 (4) | 7.0 | |
| July 8, 2020, 1 a.m. | 8.0 ppb (7) | 2.3 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 8, 2020, midnight | 14.6 ppb (14) | 6.0 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 3.0 μg/m3 (12) | 14.0 | |
| July 7, 2020, 11 p.m. | 41.7 ppb (39) | 25.4 ppb (24) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 5.0 μg/m3 (21) | 39.0 | |
| July 7, 2020, 10 p.m. | 45.1 ppb (42) | 27.1 ppb (25) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 5.0 μg/m3 (21) | 42.0 | |
| July 7, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 7, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 7, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 7, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 7, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 7, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 7, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 7, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 7, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 7, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 7, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 7, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.12 ppb (1) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 7, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.1 ppb (1) | N/A | -2.0 μg/m3 (0) | 1.0 | |
| July 7, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.11 ppb (1) | N/A | -2.0 μg/m3 (0) | 1.0 | |
| July 7, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 7, 2020, 6 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 | |
| July 7, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 7, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 0.0 μg/m3 (0) | 3.0 | |
| July 7, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 7, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 1.0 μg/m3 (4) | 5.0 | |
| July 6, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 6, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 6, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 6, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 6, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 6, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 6, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 6, 2020, 4 p.m. | 44.1 ppb (41) | 28.0 ppb (26) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 5.0 μg/m3 (21) | 41.0 | |
| July 6, 2020, 3 p.m. | 50.5 ppb (47) | 31.0 ppb (29) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 5.0 μg/m3 (21) | 47.0 | |
| July 6, 2020, 2 p.m. | 56.0 ppb (52) | 35.9 ppb (33) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 7.0 μg/m3 (29) | 52.0 | |
| July 6, 2020, 1 p.m. | 41.0 ppb (38) | 21.9 ppb (20) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 6.0 μg/m3 (25) | 38.0 | |
| July 6, 2020, noon | 17.3 ppb (16) | 5.9 ppb (5) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 6, 2020, 11 a.m. | 28.0 ppb (26) | 10.3 ppb (10) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 6, 2020, 10 a.m. | 5.1 ppb (5) | 0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.13 ppb (1) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 6, 2020, 9 a.m. | 2.3 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 6, 2020, 8 a.m. | 3.3 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.1 ppb (1) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 6, 2020, 7 a.m. | 4.7 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 6, 2020, 6 a.m. | 6.4 ppb (6) | 0.6 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 6, 2020, 5 a.m. | 11.5 ppb (11) | 3.4 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 6, 2020, 4 a.m. | 13.0 ppb (12) | 4.4 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 6, 2020, 3 a.m. | 10.6 ppb (10) | 2.8 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 6, 2020, 2 a.m. | 19.7 ppb (18) | 8.6 ppb (8) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 6, 2020, 1 a.m. | 21.2 ppb (20) | 10.8 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 6, 2020, midnight | 18.0 ppb (17) | 8.1 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 5, 2020, 11 p.m. | 14.5 ppb (13) | 7.4 ppb (7) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 5, 2020, 10 p.m. | 16.4 ppb (15) | 8.9 ppb (8) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 5, 2020, 9 p.m. | 18.4 ppb (17) | 10.6 ppb (10) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 5, 2020, 8 p.m. | 24.5 ppb (23) | 13.6 ppb (13) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 5.0 μg/m3 (21) | 23.0 | |
| July 5, 2020, 7 p.m. | 20.8 ppb (19) | 12.3 ppb (11) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 5, 2020, 6 p.m. | 22.4 ppb (21) | 13.1 ppb (12) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 5, 2020, 5 p.m. | 24.5 ppb (23) | 15.4 ppb (14) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 5, 2020, 4 p.m. | 31.6 ppb (29) | 20.8 ppb (19) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 5, 2020, 3 p.m. | 13.3 ppb (12) | 7.5 ppb (7) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 15.0 μg/m3 (56) | 56.0 | |
| July 5, 2020, 2 p.m. | 3.5 ppb (3) | 0.9 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 17.0 μg/m3 (61) | 61.0 | |
| July 5, 2020, 1 p.m. | 5.6 ppb (5) | 0.8 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 36.0 μg/m3 (101) | 101.0 | |
| July 5, 2020, noon | 6.0 ppb (6) | 0.8 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 27.0 μg/m3 (82) | 82.0 | |
| July 5, 2020, 11 a.m. | 5.5 ppb (5) | 0.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 23.0 μg/m3 (73) | 73.0 | |
| July 5, 2020, 10 a.m. | 6.0 ppb (6) | 0.3 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 42.0 μg/m3 (116) | 116.0 | |
| July 5, 2020, 9 a.m. | 8.3 ppb (8) | 1.6 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 48.0 μg/m3 (131) | 131.0 | |
| July 5, 2020, 8 a.m. | 6.5 ppb (6) | 0.4 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 17.0 μg/m3 (61) | 61.0 | |
| July 5, 2020, 7 a.m. | 8.2 ppb (8) | 0.6 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 22.0 μg/m3 (71) | 71.0 | |
| July 5, 2020, 6 a.m. | 7.0 ppb (6) | 0.2 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 26.0 μg/m3 (80) | 80.0 | |
| July 5, 2020, 5 a.m. | 5.9 ppb (5) | 0.5 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 17.0 μg/m3 (61) | 61.0 | |
| July 5, 2020, 4 a.m. | 7.9 ppb (7) | 2.3 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 5, 2020, 3 a.m. | 7.1 ppb (7) | 2.1 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 | |
| July 5, 2020, 2 a.m. | 10.6 ppb (10) | 4.1 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 5, 2020, 1 a.m. | 22.2 ppb (21) | 10.3 ppb (10) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 4.0 μg/m3 (17) | 21.0 | |
| July 5, 2020, midnight | 29.4 ppb (27) | 15.7 ppb (15) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 3.0 μg/m3 (12) | 27.0 | |
| July 4, 2020, 11 p.m. | 20.7 ppb (19) | 11.2 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 4, 2020, 10 p.m. | 17.5 ppb (16) | 9.9 ppb (9) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 4, 2020, 9 p.m. | 22.1 ppb (20) | 12.4 ppb (11) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 4, 2020, 8 p.m. | 27.0 ppb (25) | 14.5 ppb (13) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 4, 2020, 7 p.m. | 20.1 ppb (19) | 10.8 ppb (10) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 4, 2020, 6 p.m. | 27.9 ppb (26) | 16.7 ppb (15) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 4, 2020, 5 p.m. | 25.6 ppb (24) | 16.8 ppb (16) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 4, 2020, 4 p.m. | 34.5 ppb (32) | 21.8 ppb (20) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 4, 2020, 3 p.m. | 39.4 ppb (36) | 24.2 ppb (22) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 6.0 μg/m3 (25) | 36.0 | |
| July 4, 2020, 2 p.m. | 29.3 ppb (27) | 16.3 ppb (15) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 6.0 μg/m3 (25) | 27.0 | |
| July 4, 2020, 1 p.m. | 29.8 ppb (28) | 14.2 ppb (13) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 5.0 μg/m3 (21) | 28.0 | |
| July 4, 2020, noon | 14.2 ppb (13) | 2.7 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 4, 2020, 11 a.m. | 8.6 ppb (8) | 1.3 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 4, 2020, 10 a.m. | 9.4 ppb (9) | 2.3 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 4, 2020, 9 a.m. | 7.9 ppb (7) | 1.8 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 4, 2020, 8 a.m. | 10.5 ppb (10) | 2.0 ppb (2) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 4, 2020, 7 a.m. | 7.4 ppb (7) | 0.4 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 4, 2020, 6 a.m. | 12.7 ppb (12) | 2.2 ppb (2) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 4, 2020, 5 a.m. | 13.1 ppb (12) | 2.6 ppb (2) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 4, 2020, 4 a.m. | 27.8 ppb (26) | 10.9 ppb (10) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 3.0 μg/m3 (12) | 26.0 | |
| July 4, 2020, 3 a.m. | 32.0 ppb (30) | 13.8 ppb (13) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 1.0 μg/m3 (4) | 30.0 | |
| July 4, 2020, 2 a.m. | 24.8 ppb (23) | 13.6 ppb (13) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | -1.0 μg/m3 (0) | 23.0 | |
| July 4, 2020, 1 a.m. | 28.4 ppb (26) | 16.3 ppb (15) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | -1.0 μg/m3 (0) | 26.0 | |
| July 4, 2020, midnight | 21.4 ppb (20) | 11.7 ppb (11) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 1.0 μg/m3 (4) | 20.0 | |
| July 3, 2020, 11 p.m. | 27.6 ppb (26) | 15.9 ppb (15) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 1.0 μg/m3 (4) | 26.0 | |
| July 3, 2020, 10 p.m. | 22.9 ppb (21) | 13.7 ppb (13) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | -1.0 μg/m3 (0) | 21.0 | |
| July 3, 2020, 9 p.m. | 22.7 ppb (21) | 13.4 ppb (12) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 1.0 μg/m3 (4) | 21.0 | |
| July 3, 2020, 8 p.m. | 24.1 ppb (22) | 12.0 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 3.0 μg/m3 (12) | 22.0 | |
| July 3, 2020, 7 p.m. | 21.0 ppb (19) | 13.8 ppb (13) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 3.0 μg/m3 (12) | 19.0 | |
| July 3, 2020, 6 p.m. | 25.5 ppb (24) | 14.8 ppb (14) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 2.0 μg/m3 (8) | 24.0 | |
| July 3, 2020, 5 p.m. | 30.6 ppb (28) | 17.8 ppb (16) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 4.0 μg/m3 (17) | 28.0 |