Cambridge (Horns Point Rd) MD, US: 38.5876, -76.1408
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 19, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 3.0 μg/m3 (12) | 18.0 | |
| Sept. 19, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 19, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 19, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 26.0 ppb (20) | N/A | N/A | 4.0 μg/m3 (17) | 20.0 | |
| Sept. 19, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (21) | N/A | N/A | 3.0 μg/m3 (12) | 21.0 | |
| Sept. 19, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | 3.0 μg/m3 (12) | 22.0 | |
| Sept. 19, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 3.0 μg/m3 (12) | 22.0 | |
| Sept. 19, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | 4.0 μg/m3 (17) | 23.0 | |
| Sept. 19, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | 4.0 μg/m3 (17) | 22.0 | |
| Sept. 19, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 8.0 μg/m3 (33) | 33.0 | |
| Sept. 19, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 14.0 μg/m3 (54) | 54.0 | |
| Sept. 19, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 13.0 μg/m3 (52) | 52.0 | |
| Sept. 18, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 26.0 ppb (20) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Sept. 18, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 18, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 8.0 μg/m3 (33) | 33.0 | |
| Sept. 18, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 8.0 μg/m3 (33) | 33.0 | |
| Sept. 18, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 8.0 μg/m3 (33) | 33.0 | |
| Sept. 18, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 18, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 18, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 18, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Sept. 18, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (16) | N/A | N/A | 8.0 μg/m3 (33) | 33.0 | |
| Sept. 18, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | 3.0 μg/m3 (12) | 15.0 | |
| Sept. 18, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 1.0 μg/m3 (4) | 18.0 | |
| Sept. 18, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (21) | N/A | N/A | 3.0 μg/m3 (12) | 21.0 | |
| Sept. 18, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 26.0 ppb (20) | N/A | N/A | 4.0 μg/m3 (17) | 20.0 | |
| Sept. 18, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 1.0 μg/m3 (4) | 19.0 | |
| Sept. 18, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | 0.0 μg/m3 (0) | 22.0 | |
| Sept. 18, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (24) | N/A | N/A | -2.0 μg/m3 (0) | 24.0 | |
| Sept. 18, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | 0.0 μg/m3 (0) | 23.0 | |
| Sept. 18, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | 3.0 μg/m3 (12) | 22.0 | |
| Sept. 18, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | 0.0 μg/m3 (0) | 23.0 | |
| Sept. 18, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (24) | N/A | N/A | -2.0 μg/m3 (0) | 24.0 | |
| Sept. 18, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | -1.0 μg/m3 (0) | 17.0 | |
| Sept. 18, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | N/A | N/A | 2.0 μg/m3 (8) | 15.0 | |
| Sept. 18, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 17, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 13.0 ppb (10) | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 17, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | 3.0 μg/m3 (12) | 14.0 | |
| Sept. 17, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 2.0 μg/m3 (8) | 18.0 | |
| Sept. 17, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | 1.0 μg/m3 (4) | 19.0 | |
| Sept. 17, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (21) | N/A | N/A | 2.0 μg/m3 (8) | 21.0 | |
| Sept. 17, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | -1.0 μg/m3 (0) | 17.0 | |
| Sept. 17, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 0.0 μg/m3 (0) | 17.0 | |
| Sept. 17, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | -1.0 μg/m3 (0) | 17.0 | |
| Sept. 17, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | N/A | N/A | 0.0 μg/m3 (0) | 15.0 | |
| Sept. 17, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | 3.0 μg/m3 (12) | 13.0 | |
| Sept. 17, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.0 ppb (1) | N/A | N/A | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 17, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 3.0 ppb (2) | N/A | N/A | -2.0 μg/m3 (0) | 2.0 | |
| Sept. 17, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 4.0 ppb (3) | N/A | N/A | -2.0 μg/m3 (0) | 3.0 | |
| Sept. 17, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 7.0 ppb (5) | N/A | N/A | -3.0 μg/m3 (0) | 5.0 | |
| Sept. 17, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 12.0 ppb (9) | N/A | N/A | -3.0 μg/m3 (0) | 9.0 | |
| Sept. 17, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 12.0 ppb (9) | N/A | N/A | -1.0 μg/m3 (0) | 9.0 | |
| Sept. 17, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | 0.0 μg/m3 (0) | 11.0 | |
| Sept. 17, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 13.0 ppb (10) | N/A | N/A | 1.0 μg/m3 (4) | 10.0 | |
| Sept. 17, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 12.0 ppb (9) | N/A | N/A | 1.0 μg/m3 (4) | 9.0 | |
| Sept. 17, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | N/A | N/A | 0.0 μg/m3 (0) | 12.0 | |
| Sept. 17, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | 2.0 μg/m3 (8) | 14.0 | |
| Sept. 17, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | 3.0 μg/m3 (12) | 13.0 | |
| Sept. 17, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 17, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 11.0 ppb (8) | N/A | N/A | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 16, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 13.0 ppb (10) | N/A | N/A | -3.0 μg/m3 (0) | 10.0 | |
| Sept. 16, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (16) | N/A | N/A | -2.0 μg/m3 (0) | 16.0 | |
| Sept. 16, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | 1.0 μg/m3 (4) | 23.0 | |
| Sept. 16, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (24) | N/A | N/A | 3.0 μg/m3 (12) | 24.0 | |
| Sept. 16, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 16, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| Sept. 16, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| Sept. 16, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (24) | N/A | N/A | 1.0 μg/m3 (4) | 24.0 | |
| Sept. 16, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | 1.0 μg/m3 (4) | 23.0 | |
| Sept. 16, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | -2.0 μg/m3 (0) | 18.0 | |
| Sept. 16, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | -4.0 μg/m3 (0) | 14.0 | |
| Sept. 16, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 5.0 ppb (4) | N/A | N/A | -1.0 μg/m3 (0) | 4.0 | |
| Sept. 16, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 5.0 ppb (4) | N/A | N/A | 1.0 μg/m3 (4) | 4.0 | |
| Sept. 16, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 8.0 ppb (6) | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 16, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 16, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 12.0 ppb (9) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 16, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 13.0 ppb (10) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 16, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 16, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 13.0 ppb (10) | N/A | N/A | 0.0 μg/m3 (0) | 10.0 | |
| Sept. 16, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 13.0 ppb (10) | N/A | N/A | 0.0 μg/m3 (0) | 10.0 | |
| Sept. 16, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | 1.0 μg/m3 (4) | 11.0 | |
| Sept. 16, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | 3.0 μg/m3 (12) | 14.0 | |
| Sept. 16, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 16, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 26.0 ppb (20) | N/A | N/A | 1.0 μg/m3 (4) | 20.0 | |
| Sept. 15, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | 0.0 μg/m3 (0) | 22.0 | |
| Sept. 15, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | -1.0 μg/m3 (0) | 23.0 | |
| Sept. 15, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (24) | N/A | N/A | 0.0 μg/m3 (0) | 24.0 | |
| Sept. 15, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 1.0 μg/m3 (4) | 25.0 | |
| Sept. 15, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 1.0 μg/m3 (4) | 25.0 | |
| Sept. 15, 2020, 6 p.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. 15, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | -1.0 μg/m3 (0) | 21.0 | |
| Sept. 15, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | -1.0 μg/m3 (0) | 18.0 | |
| Sept. 15, 2020, 3 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, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 0.0 μg/m3 (0) | 15.0 | |
| Sept. 15, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 3.0 μg/m3 (12) | 15.0 | |
| Sept. 15, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 15, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (16) | N/A | N/A | 3.0 μg/m3 (12) | 16.0 | |
| Sept. 15, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 0.0 μg/m3 (0) | 18.0 | |
| Sept. 15, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 0.0 μg/m3 (0) | 18.0 | |
| Sept. 15, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 2.0 μg/m3 (8) | 19.0 | |
| Sept. 15, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 1.0 μg/m3 (4) | 18.0 | |
| Sept. 15, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 1.0 μg/m3 (4) | 18.0 | |
| Sept. 15, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 2.0 μg/m3 (8) | 18.0 | |
| Sept. 15, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | 2.0 μg/m3 (8) | 19.0 | |
| Sept. 15, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | 2.0 μg/m3 (8) | 22.0 | |
| Sept. 15, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (24) | N/A | N/A | 2.0 μg/m3 (8) | 24.0 | |
| Sept. 15, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 5.0 μg/m3 (21) | 25.0 | |
| Sept. 15, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 14, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 37.0 ppb (28) | N/A | N/A | 6.0 μg/m3 (25) | 28.0 | |
| Sept. 14, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (29) | N/A | N/A | 3.0 μg/m3 (12) | 29.0 | |
| Sept. 14, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 37.0 ppb (28) | N/A | N/A | 3.0 μg/m3 (12) | 28.0 | |
| Sept. 14, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (29) | N/A | N/A | 4.0 μg/m3 (17) | 29.0 | |
| Sept. 14, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (29) | N/A | N/A | 2.0 μg/m3 (8) | 29.0 | |
| Sept. 14, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 35.0 ppb (27) | N/A | N/A | 0.0 μg/m3 (0) | 27.0 | |
| Sept. 14, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 0.0 μg/m3 (0) | 26.0 | |
| Sept. 14, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 0.0 μg/m3 (0) | 25.0 | |
| Sept. 14, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 14, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 26.0 ppb (20) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Sept. 14, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Sept. 14, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | 13.0 μg/m3 (52) | 52.0 | |
| Sept. 14, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (12) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 14, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (12) | N/A | N/A | 1.0 μg/m3 (4) | 12.0 | |
| Sept. 14, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | N/A | N/A | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 14, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 14, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 3.0 ppb (2) | N/A | N/A | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 14, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 5.0 ppb (4) | N/A | N/A | -1.0 μg/m3 (0) | 4.0 | |
| Sept. 14, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 4.0 ppb (3) | N/A | N/A | 0.0 μg/m3 (0) | 3.0 | |
| Sept. 14, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 6.0 ppb (5) | N/A | N/A | 0.0 μg/m3 (0) | 5.0 | |
| Sept. 14, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 5.0 ppb (4) | N/A | N/A | 0.0 μg/m3 (0) | 4.0 | |
| Sept. 14, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 5.0 ppb (4) | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 14, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 6.0 ppb (5) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 14, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 6.0 ppb (5) | N/A | N/A | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 13, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 10.0 ppb (8) | N/A | N/A | 0.0 μg/m3 (0) | 8.0 | |
| Sept. 13, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | 3.0 μg/m3 (12) | 13.0 | |
| Sept. 13, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 5.0 μg/m3 (21) | 22.0 | |
| Sept. 13, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 3.0 μg/m3 (12) | 25.0 | |
| Sept. 13, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | 5.0 μg/m3 (21) | 23.0 | |
| Sept. 13, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (22) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 13, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 4.0 μg/m3 (17) | 18.0 | |
| Sept. 13, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 13, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 3.0 μg/m3 (12) | 17.0 | |
| Sept. 13, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 19.0 ppb (15) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 13, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | 3.0 μg/m3 (12) | 13.0 | |
| Sept. 13, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | 3.0 μg/m3 (12) | 13.0 | |
| Sept. 13, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | N/A | 3.0 μg/m3 (12) | 13.0 | |
| Sept. 13, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | N/A | N/A | 1.0 μg/m3 (4) | 14.0 | |
| Sept. 13, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (15) | N/A | N/A | 2.0 μg/m3 (8) | 15.0 | |
| Sept. 13, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (16) | N/A | N/A | 1.0 μg/m3 (4) | 16.0 | |
| Sept. 13, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | N/A | N/A | 1.0 μg/m3 (4) | 17.0 | |
| Sept. 13, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 4.0 μg/m3 (17) | 18.0 | |
| Sept. 13, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | N/A | N/A | 2.0 μg/m3 (8) | 18.0 | |
| Sept. 13, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | -1.0 μg/m3 (0) | 18.0 | |
| Sept. 13, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (19) | N/A | N/A | -1.0 μg/m3 (0) | 19.0 | |
| Sept. 13, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (21) | N/A | N/A | 0.0 μg/m3 (0) | 21.0 | |
| Sept. 13, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | 2.0 μg/m3 (8) | 22.0 | |
| Sept. 13, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | 4.0 μg/m3 (17) | 23.0 | |
| Sept. 12, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (24) | N/A | N/A | 3.0 μg/m3 (12) | 24.0 | |
| Sept. 12, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 4.0 μg/m3 (17) | 25.0 | |
| Sept. 12, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 3.0 μg/m3 (12) | 26.0 | |
| Sept. 12, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 1.0 μg/m3 (4) | 26.0 | |
| Sept. 12, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 35.0 ppb (27) | N/A | N/A | 1.0 μg/m3 (4) | 27.0 | |
| Sept. 12, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 35.0 ppb (27) | N/A | N/A | 1.0 μg/m3 (4) | 27.0 | |
| Sept. 12, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 35.0 ppb (27) | N/A | N/A | 1.0 μg/m3 (4) | 27.0 | |
| Sept. 12, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 34.0 ppb (26) | N/A | N/A | 1.0 μg/m3 (4) | 26.0 | |
| Sept. 12, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | N/A | N/A | 3.0 μg/m3 (12) | 25.0 | |
| Sept. 12, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | 5.0 μg/m3 (21) | 23.0 | |
| Sept. 12, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (22) | N/A | N/A | 4.0 μg/m3 (17) | 22.0 | |
| Sept. 12, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 26.0 ppb (20) | N/A | N/A | 2.0 μg/m3 (8) | 20.0 |