Elk Point (475th Ave) SD, US: 42.751518, -96.707208
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov. 26, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 9.7 μg/m3 (9) | 7.4 μg/m3 (31) | 31.0 | |
| Nov. 25, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 12.3 μg/m3 (12) | 6.5 μg/m3 (28) | 28.0 | |
| Nov. 25, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 9.5 μg/m3 (9) | 7.9 μg/m3 (33) | 33.0 | |
| Nov. 25, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 6.8 μg/m3 (7) | 3.1 μg/m3 (13) | 20.0 | |
| Nov. 25, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 8.0 μg/m3 (8) | 5.6 μg/m3 (24) | 24.0 | |
| Nov. 25, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 10.7 μg/m3 (10) | 7.2 μg/m3 (31) | 31.0 | |
| Nov. 25, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 12.2 μg/m3 (12) | 7.7 μg/m3 (33) | 33.0 | |
| Nov. 25, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 9.7 μg/m3 (9) | 8.6 μg/m3 (36) | 36.0 | |
| Nov. 25, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 9.5 μg/m3 (9) | 7.2 μg/m3 (31) | 31.0 | |
| Nov. 25, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 9.3 μg/m3 (9) | 7.9 μg/m3 (33) | 33.0 | |
| Nov. 25, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| Nov. 25, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 5.6 μg/m3 (6) | 6.9 μg/m3 (29) | 29.0 | |
| Nov. 25, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | 7.6 μg/m3 (8) | 9.8 μg/m3 (41) | 41.0 | |
| Nov. 25, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | 15.8 μg/m3 (15) | 10.1 μg/m3 (43) | 43.0 | |
| Nov. 25, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 12.1 μg/m3 (12) | 8.1 μg/m3 (34) | 34.0 | |
| Nov. 25, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 9.6 μg/m3 (9) | 4.8 μg/m3 (20) | 20.0 | |
| Nov. 25, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (10) | N/A | 16.8 μg/m3 (16) | 8.4 μg/m3 (36) | 36.0 | |
| Nov. 25, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (10) | N/A | 14.1 μg/m3 (14) | 9.1 μg/m3 (38) | 38.0 | |
| Nov. 25, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | 14.5 μg/m3 (14) | 7.4 μg/m3 (31) | 31.0 | |
| Nov. 25, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | 15.0 μg/m3 (14) | 8.9 μg/m3 (38) | 38.0 | |
| Nov. 25, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | 13.5 μg/m3 (13) | 10.6 μg/m3 (45) | 45.0 | |
| Nov. 25, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | 11.0 μg/m3 (11) | 6.9 μg/m3 (29) | 29.0 | |
| Nov. 25, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | 7.0 μg/m3 (7) | 3.6 μg/m3 (16) | 16.0 | |
| Nov. 25, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 8.8 μg/m3 (9) | 5.7 μg/m3 (24) | 24.0 | |
| Nov. 25, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | 8.5 μg/m3 (8) | 4.8 μg/m3 (20) | 20.0 | |
| Nov. 24, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 8.5 μg/m3 (8) | 3.6 μg/m3 (16) | 16.0 | |
| Nov. 24, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 8.3 μg/m3 (8) | 0.4 μg/m3 (2) | 13.0 | |
| Nov. 24, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 4.9 μg/m3 (5) | 1.6 μg/m3 (7) | 13.0 | |
| Nov. 24, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 4.2 μg/m3 (4) | 2.3 μg/m3 (10) | 11.0 | |
| Nov. 24, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | 5.2 μg/m3 (5) | 0.6 μg/m3 (3) | 13.0 | |
| Nov. 24, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | 0.7 μg/m3 (1) | 1.1 μg/m3 (5) | 14.0 | |
| Nov. 24, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 1.0 μg/m3 (1) | 1.6 μg/m3 (7) | 15.0 | |
| Nov. 24, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | 3.2 μg/m3 (3) | 0.6 μg/m3 (3) | 14.0 | |
| Nov. 24, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | 3.4 μg/m3 (4) | 1.8 μg/m3 (8) | 13.0 | |
| Nov. 24, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | 2.2 μg/m3 (3) | 3.8 μg/m3 (16) | 16.0 | |
| Nov. 24, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 2.3 μg/m3 (3) | 5.0 μg/m3 (21) | 21.0 | |
| Nov. 24, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 2.8 μg/m3 (3) | 6.0 μg/m3 (25) | 25.0 | |
| Nov. 24, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 3.0 μg/m3 (3) | 5.0 μg/m3 (21) | 21.0 | |
| Nov. 24, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 3.7 μg/m3 (4) | 4.1 μg/m3 (18) | 19.0 | |
| Nov. 24, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 4.3 μg/m3 (4) | 2.3 μg/m3 (10) | 21.0 | |
| Nov. 24, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 7.3 μg/m3 (7) | 1.4 μg/m3 (6) | 23.0 | |
| Nov. 24, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 5.2 μg/m3 (5) | -1.2 μg/m3 (0) | 25.0 | |
| Nov. 24, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 7.2 μg/m3 (7) | -2.0 μg/m3 (0) | 26.0 | |
| Nov. 24, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 4.4 μg/m3 (5) | 0.1 μg/m3 (1) | 26.0 | |
| Nov. 24, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 2.2 μg/m3 (3) | 2.3 μg/m3 (10) | 25.0 | |
| Nov. 24, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 2.7 μg/m3 (3) | 3.6 μg/m3 (16) | 25.0 | |
| Nov. 24, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 4.9 μg/m3 (5) | 6.4 μg/m3 (27) | 27.0 | |
| Nov. 24, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 6.1 μg/m3 (6) | 6.4 μg/m3 (27) | 27.0 | |
| Nov. 24, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 9.1 μg/m3 (9) | 8.4 μg/m3 (36) | 36.0 | |
| Nov. 23, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 12.3 μg/m3 (12) | 10.9 μg/m3 (46) | 46.0 | |
| Nov. 23, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.3 μg/m3 (9) | 12.3 μg/m3 (52) | 52.0 | |
| Nov. 23, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.8 μg/m3 (8) | 5.3 μg/m3 (23) | 23.0 | |
| Nov. 23, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.5 μg/m3 (1) | N/A | 1.0 | |
| Nov. 23, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | N/A | N/A | 22.0 | |
| Nov. 23, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 9.3 μg/m3 (9) | 4.8 μg/m3 (20) | 20.0 | |
| Nov. 23, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 9.8 μg/m3 (10) | 5.5 μg/m3 (23) | 23.0 | |
| Nov. 23, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 7.3 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| Nov. 23, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 7.8 μg/m3 (8) | 5.5 μg/m3 (23) | 23.0 | |
| Nov. 23, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (10) | N/A | 14.7 μg/m3 (14) | 2.8 μg/m3 (12) | 14.0 | |
| Nov. 23, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | 5.3 μg/m3 (5) | 5.0 μg/m3 (21) | 21.0 | |
| Nov. 23, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (3) | N/A | 4.8 μg/m3 (5) | 4.8 μg/m3 (20) | 20.0 | |
| Nov. 23, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | 4.8 μg/m3 (5) | 4.8 μg/m3 (20) | 20.0 | |
| Nov. 23, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | 6.3 μg/m3 (6) | 1.6 μg/m3 (7) | 7.0 | |
| Nov. 23, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 3.4 μg/m3 (4) | 0.0 μg/m3 (0) | 11.0 | |
| Nov. 23, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (10) | N/A | 5.3 μg/m3 (5) | 2.8 μg/m3 (12) | 12.0 | |
| Nov. 23, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 4.8 μg/m3 (5) | 5.5 μg/m3 (23) | 23.0 | |
| Nov. 23, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 6.0 μg/m3 (6) | 4.1 μg/m3 (18) | 18.0 | |
| Nov. 23, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 6.7 μg/m3 (7) | 3.6 μg/m3 (16) | 16.0 | |
| Nov. 23, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 8.7 μg/m3 (9) | 4.8 μg/m3 (20) | 20.0 | |
| Nov. 23, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 5.8 μg/m3 (6) | 3.3 μg/m3 (14) | 17.0 | |
| Nov. 23, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 7.0 μg/m3 (7) | 3.1 μg/m3 (13) | 15.0 | |
| Nov. 23, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 10.5 μg/m3 (10) | 2.3 μg/m3 (10) | 21.0 | |
| Nov. 23, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 10.8 μg/m3 (10) | 2.6 μg/m3 (11) | 21.0 | |
| Nov. 22, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 13.3 μg/m3 (13) | 2.6 μg/m3 (11) | 22.0 | |
| Nov. 22, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 9.2 μg/m3 (9) | 3.6 μg/m3 (16) | 25.0 | |
| Nov. 22, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 7.8 μg/m3 (8) | 6.0 μg/m3 (25) | 27.0 | |
| Nov. 22, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 16.0 μg/m3 (15) | 4.1 μg/m3 (18) | 27.0 | |
| Nov. 22, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 6.1 μg/m3 (6) | 0.0 μg/m3 (0) | 25.0 | |
| Nov. 22, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 2.6 μg/m3 (3) | 0.1 μg/m3 (1) | 25.0 | |
| Nov. 22, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | -1.0 μg/m3 (0) | 1.6 μg/m3 (7) | 23.0 | |
| Nov. 22, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 1.8 μg/m3 (2) | 2.6 μg/m3 (11) | 22.0 | |
| Nov. 22, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 3.7 μg/m3 (4) | 3.8 μg/m3 (16) | 20.0 | |
| Nov. 22, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 3.4 μg/m3 (4) | 4.3 μg/m3 (18) | 18.0 | |
| Nov. 22, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 5.9 μg/m3 (6) | 4.3 μg/m3 (18) | 18.0 | |
| Nov. 22, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 9.8 μg/m3 (10) | 2.8 μg/m3 (12) | 17.0 | |
| Nov. 22, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | 14.5 μg/m3 (14) | 2.1 μg/m3 (9) | 15.0 | |
| Nov. 22, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 10.8 μg/m3 (10) | 4.8 μg/m3 (20) | 20.0 | |
| Nov. 22, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | 13.8 μg/m3 (13) | 6.9 μg/m3 (29) | 29.0 | |
| Nov. 22, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (8) | N/A | 18.9 μg/m3 (18) | 10.9 μg/m3 (46) | 46.0 | |
| Nov. 22, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (8) | N/A | 20.4 μg/m3 (19) | 13.8 μg/m3 (55) | 55.0 | |
| Nov. 22, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (10) | N/A | 24.3 μg/m3 (23) | 12.1 μg/m3 (51) | 51.0 | |
| Nov. 22, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 31.4 μg/m3 (30) | 11.3 μg/m3 (48) | 48.0 | |
| Nov. 22, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 28.0 μg/m3 (26) | 10.4 μg/m3 (44) | 44.0 | |
| Nov. 22, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 23.3 μg/m3 (22) | 13.3 μg/m3 (54) | 54.0 | |
| Nov. 22, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 26.2 μg/m3 (25) | 14.3 μg/m3 (56) | 56.0 | |
| Nov. 22, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | 48.1 μg/m3 (45) | 10.6 μg/m3 (45) | 45.0 | |
| Nov. 22, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | 22.1 μg/m3 (21) | 8.4 μg/m3 (36) | 36.0 | |
| Nov. 21, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | 18.6 μg/m3 (18) | 9.9 μg/m3 (42) | 42.0 | |
| Nov. 21, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 20.2 μg/m3 (19) | 8.6 μg/m3 (36) | 36.0 | |
| Nov. 21, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 19.0 μg/m3 (18) | 8.1 μg/m3 (34) | 34.0 | |
| Nov. 21, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 19.3 μg/m3 (18) | 11.1 μg/m3 (47) | 47.0 | |
| Nov. 21, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 13.5 μg/m3 (13) | 10.4 μg/m3 (44) | 44.0 | |
| Nov. 21, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 16.8 μg/m3 (16) | 9.1 μg/m3 (38) | 38.0 | |
| Nov. 21, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 16.2 μg/m3 (15) | 11.9 μg/m3 (50) | 50.0 | |
| Nov. 21, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | 13.0 μg/m3 (13) | 9.6 μg/m3 (40) | 40.0 | |
| Nov. 21, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 12.6 μg/m3 (12) | 9.9 μg/m3 (42) | 42.0 | |
| Nov. 21, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | 9.5 μg/m3 (9) | 6.0 μg/m3 (25) | 25.0 | |
| Nov. 21, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | 10.0 μg/m3 (10) | 6.6 μg/m3 (28) | 28.0 | |
| Nov. 21, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | 10.7 μg/m3 (10) | 6.2 μg/m3 (26) | 26.0 | |
| Nov. 21, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | 9.5 μg/m3 (9) | 5.5 μg/m3 (23) | 23.0 | |
| Nov. 21, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | 12.0 μg/m3 (12) | 8.4 μg/m3 (36) | 36.0 | |
| Nov. 21, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | 7.0 μg/m3 (7) | 13.3 μg/m3 (54) | 54.0 | |
| Nov. 21, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | 7.0 μg/m3 (7) | 9.1 μg/m3 (38) | 38.0 | |
| Nov. 21, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | 16.4 μg/m3 (16) | 10.8 μg/m3 (46) | 46.0 | |
| Nov. 21, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | 13.2 μg/m3 (13) | 8.1 μg/m3 (34) | 34.0 | |
| Nov. 21, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | 14.5 μg/m3 (14) | 10.4 μg/m3 (44) | 44.0 | |
| Nov. 21, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | 15.2 μg/m3 (15) | 9.9 μg/m3 (42) | 42.0 | |
| Nov. 21, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | 17.1 μg/m3 (16) | 12.3 μg/m3 (52) | 52.0 | |
| Nov. 21, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (8) | N/A | 19.8 μg/m3 (19) | 10.8 μg/m3 (46) | 46.0 | |
| Nov. 21, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 25.2 μg/m3 (24) | 13.3 μg/m3 (54) | 54.0 | |
| Nov. 21, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | 27.7 μg/m3 (26) | 11.4 μg/m3 (48) | 48.0 | |
| Nov. 20, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | 21.0 μg/m3 (20) | 8.1 μg/m3 (34) | 34.0 | |
| Nov. 20, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | 32.8 μg/m3 (31) | 6.3 μg/m3 (27) | 31.0 | |
| Nov. 20, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 10.4 μg/m3 (10) | 3.6 μg/m3 (16) | 27.0 | |
| Nov. 20, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 15.4 μg/m3 (15) | 2.6 μg/m3 (11) | 28.0 | |
| Nov. 20, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 24.7 μg/m3 (23) | 0.2 μg/m3 (1) | 27.0 | |
| Nov. 20, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 13.2 μg/m3 (13) | 1.6 μg/m3 (7) | 27.0 | |
| Nov. 20, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 10.2 μg/m3 (10) | 3.3 μg/m3 (14) | 25.0 | |
| Nov. 20, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 9.3 μg/m3 (9) | 2.8 μg/m3 (12) | 18.0 | |
| Nov. 20, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.3 μg/m3 (11) | N/A | 11.0 | |
| Nov. 20, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 8.0 | |
| Nov. 20, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | 6.1 μg/m3 (6) | 7.2 μg/m3 (31) | 31.0 | |
| Nov. 20, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 5.6 μg/m3 (6) | 6.0 μg/m3 (25) | 25.0 | |
| Nov. 20, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (10) | N/A | 7.0 μg/m3 (7) | 5.8 μg/m3 (25) | 25.0 | |
| Nov. 20, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 6.6 μg/m3 (7) | 4.6 μg/m3 (20) | 20.0 | |
| Nov. 20, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 6.6 μg/m3 (7) | 7.2 μg/m3 (31) | 31.0 | |
| Nov. 20, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | 15.5 μg/m3 (15) | 8.2 μg/m3 (35) | 35.0 | |
| Nov. 20, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 19.6 μg/m3 (19) | 10.6 μg/m3 (45) | 45.0 | |
| Nov. 20, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 16.8 μg/m3 (16) | 6.5 μg/m3 (28) | 28.0 | |
| Nov. 20, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 20.8 μg/m3 (20) | 8.9 μg/m3 (38) | 38.0 | |
| Nov. 20, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | 26.0 μg/m3 (25) | 9.9 μg/m3 (42) | 42.0 | |
| Nov. 20, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | 32.1 μg/m3 (30) | 14.0 μg/m3 (55) | 55.0 | |
| Nov. 20, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | 31.1 μg/m3 (29) | 11.4 μg/m3 (48) | 48.0 | |
| Nov. 20, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 21.2 μg/m3 (20) | 13.6 μg/m3 (55) | 55.0 | |
| Nov. 20, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 43.4 μg/m3 (41) | 10.6 μg/m3 (45) | 45.0 | |
| Nov. 19, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | 77.7 μg/m3 (63) | 21.2 μg/m3 (71) | 71.0 | |
| Nov. 19, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 40.9 μg/m3 (38) | 13.3 μg/m3 (54) | 54.0 | |
| Nov. 19, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 42.4 μg/m3 (40) | 5.3 μg/m3 (23) | 40.0 | |
| Nov. 19, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 32.2 μg/m3 (30) | 5.3 μg/m3 (23) | 30.0 | |
| Nov. 19, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 27.9 μg/m3 (26) | 5.3 μg/m3 (23) | 26.0 | |
| Nov. 19, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | 26.6 μg/m3 (25) | 4.6 μg/m3 (20) | 25.0 | |
| Nov. 19, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (19) | N/A | 22.2 μg/m3 (21) | 3.6 μg/m3 (16) | 21.0 | |
| Nov. 19, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | 26.1 μg/m3 (25) | 4.6 μg/m3 (20) | 25.0 | |
| Nov. 19, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | 18.8 μg/m3 (18) | 6.5 μg/m3 (28) | 28.0 | |
| Nov. 19, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | 14.1 μg/m3 (14) | 7.6 μg/m3 (32) | 32.0 | |
| Nov. 19, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | 23.0 μg/m3 (22) | 7.9 μg/m3 (33) | 33.0 | |
| Nov. 19, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | 22.6 μg/m3 (21) | 7.2 μg/m3 (31) | 31.0 | |
| Nov. 19, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | 16.2 μg/m3 (15) | 3.3 μg/m3 (14) | 15.0 | |
| Nov. 19, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | 26.9 μg/m3 (25) | 6.7 μg/m3 (28) | 28.0 | |
| Nov. 19, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | 22.1 μg/m3 (21) | 7.2 μg/m3 (31) | 31.0 | |
| Nov. 19, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 29.1 μg/m3 (27) | 7.2 μg/m3 (31) | 31.0 | |
| Nov. 19, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 29.0 μg/m3 (27) | 7.6 μg/m3 (32) | 32.0 | |
| Nov. 19, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 34.0 μg/m3 (32) | 8.1 μg/m3 (34) | 34.0 | |
| Nov. 19, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 28.0 μg/m3 (26) | 4.4 μg/m3 (19) | 26.0 | |
| Nov. 19, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 29.3 μg/m3 (28) | 3.6 μg/m3 (16) | 28.0 | |
| Nov. 19, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 30.4 μg/m3 (29) | 4.8 μg/m3 (20) | 29.0 | |
| Nov. 19, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 27.8 μg/m3 (26) | 7.9 μg/m3 (33) | 33.0 | |
| Nov. 19, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 28.0 μg/m3 (26) | 5.1 μg/m3 (22) | 26.0 |