Lethbridge CC, CA: 49.7164, -112.8006
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 16, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 18.5 μg/m3 (64) | 64.0 | |
| Sept. 16, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 17.7 μg/m3 (62) | 62.0 | |
| Sept. 16, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.2 μg/m3 (42) | 42.0 | |
| Sept. 16, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 10.7 μg/m3 (45) | 45.0 | |
| Sept. 16, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | N/A | N/A | 11.3 μg/m3 (47) | 47.0 | |
| Sept. 16, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 9.9 μg/m3 (41) | 41.0 | |
| Sept. 16, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 10.3 μg/m3 (43) | 43.0 | |
| Sept. 16, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 10.2 μg/m3 (42) | 42.0 | |
| Sept. 16, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 16, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 6.6 μg/m3 (28) | 28.0 | |
| Sept. 16, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 3.8 μg/m3 (16) | 20.0 | |
| Sept. 16, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 2.0 μg/m3 (8) | 24.0 | |
| Sept. 16, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 0.9 μg/m3 (4) | 25.0 | |
| Sept. 15, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 0.7 μg/m3 (3) | 27.0 | |
| Sept. 15, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 0.7 μg/m3 (3) | 27.0 | |
| Sept. 15, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 1.1 μg/m3 (5) | 27.0 | |
| Sept. 15, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 1.0 μg/m3 (4) | 28.0 | |
| Sept. 15, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 0.5 μg/m3 (2) | 27.0 | |
| Sept. 15, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 0.2 μg/m3 (1) | 26.0 | |
| Sept. 15, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | -0.1 μg/m3 (0) | 24.0 | |
| Sept. 15, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 0.2 μg/m3 (1) | 20.0 | |
| Sept. 15, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 0.5 μg/m3 (2) | 17.0 | |
| Sept. 15, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 0.2 μg/m3 (1) | 16.0 | |
| Sept. 15, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 0.0 μg/m3 (0) | 16.0 | |
| Sept. 15, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | -0.2 μg/m3 (0) | 20.0 | |
| Sept. 15, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | -0.5 μg/m3 (0) | 24.0 | |
| Sept. 15, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -0.7 μg/m3 (0) | N/A | |
| Sept. 15, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | N/A | -0.7 μg/m3 (0) | 28.0 | |
| Sept. 15, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | -0.6 μg/m3 (0) | 29.0 | |
| Sept. 15, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | N/A | -0.2 μg/m3 (0) | 30.0 | |
| Sept. 15, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | -0.6 μg/m3 (0) | 35.0 | |
| Sept. 15, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | N/A | -0.5 μg/m3 (0) | 32.0 | |
| Sept. 15, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | N/A | -0.4 μg/m3 (0) | 31.0 | |
| Sept. 15, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | N/A | -0.5 μg/m3 (0) | 32.0 | |
| Sept. 15, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | N/A | -0.5 μg/m3 (0) | 32.0 | |
| Sept. 15, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | N/A | -0.3 μg/m3 (0) | 31.0 | |
| Sept. 15, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | N/A | -0.4 μg/m3 (0) | 30.0 | |
| Sept. 14, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | N/A | -0.5 μg/m3 (0) | 30.0 | |
| Sept. 14, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | -0.6 μg/m3 (0) | 29.0 | |
| Sept. 14, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | N/A | -0.4 μg/m3 (0) | 28.0 | |
| Sept. 14, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | -0.6 μg/m3 (0) | 27.0 | |
| Sept. 14, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | -0.6 μg/m3 (0) | 27.0 | |
| Sept. 14, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | -0.6 μg/m3 (0) | 26.0 | |
| Sept. 14, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | -0.5 μg/m3 (0) | 27.0 | |
| Sept. 14, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | -0.5 μg/m3 (0) | 26.0 | |
| Sept. 14, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | -0.3 μg/m3 (0) | 25.0 | |
| Sept. 14, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | N/A | -0.2 μg/m3 (0) | 22.0 | |
| Sept. 14, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | -0.2 μg/m3 (0) | 21.0 | |
| Sept. 14, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | N/A | -0.3 μg/m3 (0) | 22.0 | |
| Sept. 14, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | -0.3 μg/m3 (0) | 21.0 | |
| Sept. 14, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -0.4 μg/m3 (0) | N/A | |
| Sept. 14, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | -0.4 μg/m3 (0) | 24.0 | |
| Sept. 14, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | -0.4 μg/m3 (0) | 23.0 | |
| Sept. 14, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | -0.3 μg/m3 (0) | 23.0 | |
| Sept. 14, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | -0.4 μg/m3 (0) | 23.0 | |
| Sept. 14, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | -0.4 μg/m3 (0) | 23.0 | |
| Sept. 14, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | N/A | -0.5 μg/m3 (0) | 22.0 | |
| Sept. 14, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | -0.5 μg/m3 (0) | 23.0 | |
| Sept. 14, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | -0.4 μg/m3 (0) | 24.0 | |
| Sept. 14, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | -0.5 μg/m3 (0) | 25.0 | |
| Sept. 14, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | -0.6 μg/m3 (0) | 27.0 | |
| Sept. 13, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | N/A | -0.1 μg/m3 (0) | 28.0 | |
| Sept. 13, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | -0.1 μg/m3 (0) | 29.0 | |
| Sept. 13, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 0.9 μg/m3 (4) | 30.0 | |
| Sept. 13, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 0.1 μg/m3 (0) | 30.0 | |
| Sept. 13, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 0.2 μg/m3 (1) | 27.0 | |
| Sept. 13, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 1.2 μg/m3 (5) | 25.0 | |
| Sept. 13, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 1.3 μg/m3 (5) | 24.0 | |
| Sept. 13, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 1.1 μg/m3 (5) | 22.0 | |
| Sept. 13, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 1.4 μg/m3 (6) | 18.0 | |
| Sept. 13, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 2.1 μg/m3 (9) | 9.0 | |
| Sept. 13, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 1.7 μg/m3 (7) | 8.0 | |
| Sept. 13, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 1.4 μg/m3 (6) | 12.0 | |
| Sept. 13, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 0.6 μg/m3 (2) | 20.0 | |
| Sept. 13, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.4 μg/m3 (2) | 2.0 | |
| Sept. 13, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 0.2 μg/m3 (1) | 22.0 | |
| Sept. 13, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 0.0 μg/m3 (0) | 26.0 | |
| Sept. 13, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 0.5 μg/m3 (2) | 25.0 | |
| Sept. 13, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 0.1 μg/m3 (0) | 22.0 | |
| Sept. 13, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 0.2 μg/m3 (1) | 18.0 | |
| Sept. 13, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 0.2 μg/m3 (1) | 20.0 | |
| Sept. 13, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | 0.0 μg/m3 (0) | 23.0 | |
| Sept. 13, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | -0.1 μg/m3 (0) | 25.0 | |
| Sept. 13, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | -0.1 μg/m3 (0) | 25.0 | |
| Sept. 13, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | -0.2 μg/m3 (0) | 26.0 | |
| Sept. 12, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | -0.1 μg/m3 (0) | 27.0 | |
| Sept. 12, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | N/A | 27.0 | |
| Sept. 12, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 0.2 μg/m3 (1) | 26.0 | |
| Sept. 12, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 0.1 μg/m3 (0) | 25.0 | |
| Sept. 12, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 0.4 μg/m3 (2) | 20.0 | |
| Sept. 12, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 0.8 μg/m3 (3) | 16.0 | |
| Sept. 12, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 1.9 μg/m3 (8) | 12.0 | |
| Sept. 12, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 2.7 μg/m3 (11) | 11.0 | |
| Sept. 12, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 4.8 μg/m3 (20) | 20.0 | |
| Sept. 12, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| Sept. 12, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 5.1 μg/m3 (21) | 21.0 | |
| Sept. 12, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 4.1 μg/m3 (17) | 17.0 | |
| Sept. 12, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.5 μg/m3 (15) | 15.0 | |
| Sept. 12, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 3.2 μg/m3 (13) | 13.0 | |
| Sept. 12, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 12, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 5.8 μg/m3 (24) | 24.0 | |
| Sept. 12, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 1.3 μg/m3 (5) | 8.0 | |
| Sept. 12, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 3.2 μg/m3 (13) | 13.0 | |
| Sept. 12, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 2.8 μg/m3 (12) | 12.0 | |
| Sept. 12, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 1.0 μg/m3 (4) | 15.0 | |
| Sept. 12, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 1.6 μg/m3 (7) | 17.0 | |
| Sept. 12, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.4 μg/m3 (2) | 2.0 | |
| Sept. 12, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.1 μg/m3 (0) | N/A | |
| Sept. 11, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.4 μg/m3 (2) | 2.0 | |
| Sept. 11, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -0.3 μg/m3 (0) | N/A | |
| Sept. 11, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | N/A | |
| Sept. 11, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 1.1 μg/m3 (5) | 21.0 | |
| Sept. 11, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 1.4 μg/m3 (6) | 21.0 | |
| Sept. 11, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 0.9 μg/m3 (4) | 20.0 | |
| Sept. 11, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 1.2 μg/m3 (5) | 18.0 | |
| Sept. 11, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 1.2 μg/m3 (5) | 18.0 | |
| Sept. 11, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 2.9 μg/m3 (12) | 14.0 | |
| Sept. 11, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 3.6 μg/m3 (15) | 15.0 | |
| Sept. 11, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 11, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 3.7 μg/m3 (15) | 15.0 | |
| Sept. 11, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 4.1 μg/m3 (17) | 17.0 | |
| Sept. 11, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.3 μg/m3 (14) | 14.0 | |
| Sept. 11, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 2.9 μg/m3 (12) | 12.0 | |
| Sept. 11, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 2.5 μg/m3 (10) | 12.0 | |
| Sept. 11, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 2.4 μg/m3 (10) | 11.0 | |
| Sept. 11, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 1.5 μg/m3 (6) | 12.0 | |
| Sept. 11, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 1.2 μg/m3 (5) | 13.0 | |
| Sept. 11, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 0.9 μg/m3 (4) | 14.0 | |
| Sept. 11, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 0.9 μg/m3 (4) | 15.0 | |
| Sept. 11, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 0.1 μg/m3 (0) | 17.0 | |
| Sept. 11, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | -0.1 μg/m3 (0) | 18.0 | |
| Sept. 11, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | -0.2 μg/m3 (0) | 18.0 | |
| Sept. 10, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 0.5 μg/m3 (2) | 18.0 | |
| Sept. 10, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | -0.2 μg/m3 (0) | 20.0 | |
| Sept. 10, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | -0.2 μg/m3 (0) | 20.0 | |
| Sept. 10, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 0.2 μg/m3 (1) | 20.0 | |
| Sept. 10, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 0.6 μg/m3 (2) | 19.0 | |
| Sept. 10, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | -0.1 μg/m3 (0) | 20.0 | |
| Sept. 10, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | -0.2 μg/m3 (0) | 18.0 | |
| Sept. 10, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 0.2 μg/m3 (1) | 17.0 | |
| Sept. 10, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 1.2 μg/m3 (5) | 16.0 | |
| Sept. 10, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | N/A | -0.2 μg/m3 (0) | 15.0 | |
| Sept. 10, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | -0.1 μg/m3 (0) | 15.0 | |
| Sept. 10, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | N/A | -0.2 μg/m3 (0) | 13.0 | |
| Sept. 10, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | N/A | -0.2 μg/m3 (0) | 14.0 | |
| Sept. 10, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -0.1 μg/m3 (0) | N/A | |
| Sept. 10, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | -0.3 μg/m3 (0) | 19.0 | |
| Sept. 10, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | -0.2 μg/m3 (0) | 20.0 | |
| Sept. 10, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 2.6 μg/m3 (11) | 19.0 | |
| Sept. 10, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 0.9 μg/m3 (4) | 16.0 | |
| Sept. 10, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 1.1 μg/m3 (5) | 18.0 | |
| Sept. 10, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 1.3 μg/m3 (5) | 18.0 | |
| Sept. 10, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 0.8 μg/m3 (3) | 17.0 | |
| Sept. 10, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 1.0 μg/m3 (4) | 16.0 | |
| Sept. 10, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 0.5 μg/m3 (2) | 15.0 | |
| Sept. 10, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 0.7 μg/m3 (3) | 17.0 | |
| Sept. 9, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 3.7 μg/m3 (15) | 18.0 | |
| Sept. 9, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 2.8 μg/m3 (12) | 22.0 | |
| Sept. 9, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 2.4 μg/m3 (10) | 15.0 | |
| Sept. 9, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 1.2 μg/m3 (5) | 13.0 | |
| Sept. 9, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 0.7 μg/m3 (3) | 12.0 | |
| Sept. 9, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 0.8 μg/m3 (3) | 12.0 | |
| Sept. 9, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 0.7 μg/m3 (3) | 11.0 | |
| Sept. 9, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 1.0 μg/m3 (4) | 10.0 | |
| Sept. 9, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 0.8 μg/m3 (3) | 9.0 | |
| Sept. 9, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 2.0 μg/m3 (8) | 10.0 | |
| Sept. 9, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 2.0 μg/m3 (8) | 11.0 | |
| Sept. 9, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 1.3 μg/m3 (5) | 12.0 |