Medora (E Riv Rd) ND, US: 46.949699, -103.514397
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 14, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | -0.2 μg/m3 (0) | 42.0 | |
| May 14, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 0.8 μg/m3 (4) | 45.0 | |
| May 14, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | 3.5 μg/m3 (15) | 47.0 | |
| May 14, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 4.4 μg/m3 (19) | 46.0 | |
| May 14, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.9 μg/m3 (13) | 46.0 | |
| May 14, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | -0.1 μg/m3 (0) | 47.0 | |
| May 13, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | -2.1 μg/m3 (0) | 47.0 | |
| May 13, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | -2.3 μg/m3 (0) | 47.0 | |
| May 13, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | -1.7 μg/m3 (0) | 45.0 | |
| May 13, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 0.7 μg/m3 (3) | 45.0 | |
| May 13, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 1.2 μg/m3 (5) | 45.0 | |
| May 13, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 3.0 μg/m3 (13) | 44.0 | |
| May 13, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | N/A | 5.7 μg/m3 (24) | 44.0 | |
| May 13, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 4.2 μg/m3 (18) | 43.0 | |
| May 13, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 17.5 μg/m3 (63) | 63.0 | |
| May 13, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 6.5 μg/m3 (28) | 33.0 | |
| May 13, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | N/A | 5.3 μg/m3 (23) | 27.0 | |
| May 13, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 2.1 μg/m3 (9) | 24.0 | |
| May 13, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 1.5 μg/m3 (7) | 26.0 | |
| May 13, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 2.7 μg/m3 (12) | 26.0 | |
| May 13, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | N/A | 3.9 μg/m3 (17) | 27.0 | |
| May 13, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 1.8 μg/m3 (8) | 28.0 | |
| May 13, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | -1.6 μg/m3 (0) | 28.0 | |
| May 13, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | N/A | 28.0 | |
| May 13, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | N/A | 29.0 | |
| May 13, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | N/A | -3.9 μg/m3 (0) | 32.0 | |
| May 13, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 0.7 μg/m3 (3) | 33.0 | |
| May 13, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 2.5 μg/m3 (11) | 36.0 | |
| May 13, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 2.3 μg/m3 (10) | 38.0 | |
| May 13, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 0.9 μg/m3 (4) | 38.0 | |
| May 12, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 1.9 μg/m3 (8) | 39.0 | |
| May 12, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 3.3 μg/m3 (14) | 38.0 | |
| May 12, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 2.5 μg/m3 (11) | 36.0 | |
| May 12, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 2.3 μg/m3 (10) | 38.0 | |
| May 12, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 8.1 μg/m3 (34) | 43.0 | |
| May 12, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 14.9 μg/m3 (57) | 57.0 | |
| May 12, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 21.3 μg/m3 (71) | 71.0 | |
| May 12, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 6.0 μg/m3 (25) | 34.0 | |
| May 12, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | N/A | 5.9 μg/m3 (25) | 27.0 | |
| May 12, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 6.2 μg/m3 (26) | 26.0 | |
| May 12, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 6.5 μg/m3 (28) | 28.0 | |
| May 12, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 2.3 μg/m3 (10) | 25.0 | |
| May 12, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 2.7 μg/m3 (12) | 26.0 | |
| May 12, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 5.2 μg/m3 (22) | 25.0 | |
| May 12, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 7.1 μg/m3 (30) | 32.0 | |
| May 12, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 0.0 μg/m3 (0) | 31.0 | |
| May 12, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | N/A | 30.0 | |
| May 12, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | -4.5 μg/m3 (0) | 38.0 | |
| May 12, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | -0.8 μg/m3 (0) | 38.0 | |
| May 12, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 1.9 μg/m3 (8) | 37.0 | |
| May 12, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 2.0 μg/m3 (9) | 38.0 | |
| May 12, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 1.1 μg/m3 (5) | 41.0 | |
| May 12, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 1.5 μg/m3 (7) | 45.0 | |
| May 12, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 3.0 μg/m3 (13) | 49.0 | |
| May 11, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 3.1 μg/m3 (13) | 50.0 | |
| May 11, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | N/A | 2.7 μg/m3 (12) | 50.0 | |
| May 11, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 4.6 μg/m3 (20) | 49.0 | |
| May 11, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 6.1 μg/m3 (26) | 49.0 | |
| May 11, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 7.3 μg/m3 (31) | 49.0 | |
| May 11, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 7.9 μg/m3 (33) | 46.0 | |
| May 11, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 18.0 μg/m3 (64) | 64.0 | |
| May 11, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 14.1 μg/m3 (56) | 56.0 | |
| May 11, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 3.0 μg/m3 (13) | 45.0 | |
| May 11, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 6.0 μg/m3 (25) | 38.0 | |
| May 11, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 5.1 μg/m3 (22) | 34.0 | |
| May 11, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 4.3 μg/m3 (18) | 38.0 | |
| May 11, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | 7.3 μg/m3 (31) | 31.0 | |
| May 11, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 11, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 4.5 μg/m3 (19) | 38.0 | |
| May 11, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 5.4 μg/m3 (23) | 38.0 | |
| May 11, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 6.1 μg/m3 (26) | 38.0 | |
| May 11, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 2.8 μg/m3 (12) | 37.0 | |
| May 11, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 11, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | N/A | 45.0 | |
| May 11, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | -0.4 μg/m3 (0) | 46.0 | |
| May 11, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.4 μg/m3 (10) | 46.0 | |
| May 11, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | N/A | 2.6 μg/m3 (11) | 46.0 | |
| May 11, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 5.3 μg/m3 (23) | 48.0 | |
| May 10, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 3.1 μg/m3 (13) | 49.0 | |
| May 10, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 2.5 μg/m3 (11) | 49.0 | |
| May 10, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 3.0 μg/m3 (13) | 49.0 | |
| May 10, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 2.5 μg/m3 (11) | 49.0 | |
| May 10, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 4.6 μg/m3 (20) | 48.0 | |
| May 10, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | N/A | N/A | 47.0 | |
| May 10, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | N/A | N/A | 45.0 | |
| May 10, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 10, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 10, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 6.6 μg/m3 (28) | 33.0 | |
| May 10, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 5.2 μg/m3 (22) | 29.0 | |
| May 10, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 5.0 μg/m3 (21) | 29.0 | |
| May 10, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 6.1 μg/m3 (26) | 32.0 | |
| May 10, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 5.5 μg/m3 (23) | 33.0 | |
| May 10, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 4.2 μg/m3 (18) | 33.0 | |
| May 10, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 7.1 μg/m3 (30) | 35.0 | |
| May 10, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 4.0 μg/m3 (17) | 36.0 | |
| May 10, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 5.0 μg/m3 (21) | 38.0 | |
| May 10, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 3.5 μg/m3 (15) | 39.0 | |
| May 10, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | -2.8 μg/m3 (0) | 39.0 | |
| May 10, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | -2.2 μg/m3 (0) | 39.0 | |
| May 10, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 6.7 μg/m3 (28) | 39.0 | |
| May 10, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 8.2 μg/m3 (35) | 42.0 | |
| May 10, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 6.9 μg/m3 (29) | 43.0 | |
| May 9, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| May 9, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 9.8 μg/m3 (41) | 43.0 | |
| May 9, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 6.0 μg/m3 (25) | 43.0 | |
| May 9, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | N/A | 6.8 μg/m3 (29) | 43.0 | |
| May 9, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 7.0 μg/m3 (30) | 39.0 | |
| May 9, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 11.8 μg/m3 (50) | 50.0 | |
| May 9, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 6.6 μg/m3 (28) | 37.0 | |
| May 9, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 6.9 μg/m3 (29) | 35.0 | |
| May 9, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 4.3 μg/m3 (18) | 31.0 | |
| May 9, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 4.6 μg/m3 (20) | 31.0 | |
| May 9, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 3.1 μg/m3 (13) | 31.0 | |
| May 9, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 3.7 μg/m3 (16) | 33.0 | |
| May 9, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 6.1 μg/m3 (26) | 35.0 | |
| May 9, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 3.1 μg/m3 (13) | 37.0 | |
| May 9, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 4.8 μg/m3 (20) | 38.0 | |
| May 9, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 6.4 μg/m3 (27) | 38.0 | |
| May 9, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 5.8 μg/m3 (25) | 38.0 | |
| May 9, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 7.2 μg/m3 (31) | 38.0 | |
| May 9, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 5.0 μg/m3 (21) | 37.0 | |
| May 9, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 1.8 μg/m3 (8) | 35.0 | |
| May 9, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 3.9 μg/m3 (17) | 36.0 | |
| May 9, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | 2.9 μg/m3 (13) | 30.0 | |
| May 9, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | -1.6 μg/m3 (0) | 26.0 | |
| May 9, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 0.2 μg/m3 (1) | 28.0 | |
| May 8, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 1.0 μg/m3 (5) | 28.0 | |
| May 8, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 1.1 μg/m3 (5) | 29.0 | |
| May 8, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | 0.0 μg/m3 (0) | 30.0 | |
| May 8, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | -2.7 μg/m3 (0) | 30.0 | |
| May 8, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | -4.0 μg/m3 (0) | 29.0 | |
| May 8, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | -2.5 μg/m3 (0) | 30.0 | |
| May 8, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | -2.1 μg/m3 (0) | 31.0 | |
| May 8, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | N/A | -3.9 μg/m3 (0) | 32.0 | |
| May 8, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | -3.5 μg/m3 (0) | 33.0 | |
| May 8, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 0.0 μg/m3 (0) | 33.0 | |
| May 8, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 0.1 μg/m3 (1) | 34.0 | |
| May 8, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | -0.4 μg/m3 (0) | 35.0 | |
| May 8, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 2.2 μg/m3 (10) | 35.0 | |
| May 8, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 1.6 μg/m3 (7) | 35.0 | |
| May 8, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 1.6 μg/m3 (7) | 34.0 | |
| May 8, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | -0.3 μg/m3 (0) | 33.0 | |
| May 8, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | N/A | 33.0 | |
| May 8, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | -1.2 μg/m3 (0) | 36.0 | |
| May 8, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 2.2 μg/m3 (10) | 35.0 | |
| May 8, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 3.8 μg/m3 (16) | 36.0 | |
| May 8, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 4.9 μg/m3 (21) | 37.0 | |
| May 8, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 2.3 μg/m3 (10) | 38.0 | |
| May 8, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 3.8 μg/m3 (16) | 39.0 | |
| May 8, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 5.2 μg/m3 (22) | 40.0 | |
| May 7, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 3.8 μg/m3 (16) | 40.0 | |
| May 7, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 1.1 μg/m3 (5) | 41.0 | |
| May 7, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 1.2 μg/m3 (5) | 42.0 | |
| May 7, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 4.7 μg/m3 (20) | 41.0 | |
| May 7, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 5.1 μg/m3 (22) | 41.0 | |
| May 7, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 7.1 μg/m3 (30) | 40.0 | |
| May 7, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 17.1 μg/m3 (62) | 62.0 | |
| May 7, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 15.4 μg/m3 (58) | 58.0 | |
| May 7, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 6.5 μg/m3 (28) | 34.0 | |
| May 7, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 7.9 μg/m3 (33) | 34.0 | |
| May 7, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 4.9 μg/m3 (21) | 29.0 | |
| May 7, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 6.8 μg/m3 (29) | 29.0 | |
| May 7, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 8.9 μg/m3 (38) | 38.0 | |
| May 7, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 5.6 μg/m3 (24) | 29.0 | |
| May 7, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 3.4 μg/m3 (15) | 29.0 | |
| May 7, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | N/A | -2.9 μg/m3 (0) | 32.0 | |
| May 7, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | N/A | 34.0 | |
| May 7, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | -4.4 μg/m3 (0) | 34.0 |