San Diego (Sherman Heights) CA, US: 32.710177, -117.142665
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 3, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 41.3 μg/m3 (116) | 116.0 | |
| Jan. 3, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 41.5 μg/m3 (116) | 116.0 | |
| Jan. 3, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | 23.5 μg/m3 (75) | 75.0 | |
| Jan. 3, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 15.6 μg/m3 (59) | 59.0 | |
| Jan. 3, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 15.9 μg/m3 (59) | 59.0 | |
| Jan. 3, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 8.3 μg/m3 (35) | 35.0 | |
| Jan. 3, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 8.4 μg/m3 (36) | 36.0 | |
| Jan. 2, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 7.8 μg/m3 (33) | 38.0 | |
| Jan. 2, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 10.1 μg/m3 (43) | 43.0 | |
| Jan. 2, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 12.1 μg/m3 (51) | 51.0 | |
| Jan. 2, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 8.9 μg/m3 (38) | 38.0 | |
| Jan. 2, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 6.2 μg/m3 (26) | 34.0 | |
| Jan. 2, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 2, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 6.1 μg/m3 (26) | 26.0 | |
| Jan. 2, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | 2.5 μg/m3 (11) | 14.0 | |
| Jan. 2, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | N/A | 2.3 μg/m3 (10) | 12.0 | |
| Jan. 2, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | N/A | 7.4 μg/m3 (31) | 31.0 | |
| Jan. 2, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | N/A | 13.2 μg/m3 (54) | 54.0 | |
| Jan. 2, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 6.8 μg/m3 (29) | 29.0 | |
| Jan. 2, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.5 μg/m3 (36) | 36.0 | |
| Jan. 2, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.4 μg/m3 (54) | 54.0 | |
| Jan. 2, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 13.5 μg/m3 (54) | 54.0 | |
| Jan. 2, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | 22.3 μg/m3 (73) | 73.0 | |
| Jan. 2, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 29.2 μg/m3 (87) | 87.0 | |
| Jan. 2, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | 25.8 μg/m3 (80) | 80.0 | |
| Jan. 2, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 31.2 μg/m3 (92) | 92.0 | |
| Jan. 2, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 31.3 μg/m3 (92) | 92.0 | |
| Jan. 2, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | N/A | 19.4 μg/m3 (67) | 67.0 | |
| Jan. 2, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | N/A | 9.7 μg/m3 (41) | 41.0 | |
| Jan. 2, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 2, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 4.0 μg/m3 (17) | 38.0 | |
| Jan. 1, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 3.7 μg/m3 (16) | 39.0 | |
| Jan. 1, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 3.9 μg/m3 (17) | 40.0 | |
| Jan. 1, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 4.4 μg/m3 (19) | 38.0 | |
| Jan. 1, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 4.1 μg/m3 (18) | 38.0 | |
| Jan. 1, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 3.4 μg/m3 (15) | 34.0 | |
| Jan. 1, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | 8.2 μg/m3 (35) | 35.0 | |
| Jan. 1, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 14.3 μg/m3 (56) | 56.0 | |
| Jan. 1, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | 16.7 μg/m3 (61) | 61.0 | |
| Jan. 1, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (10) | N/A | N/A | 10.6 μg/m3 (45) | 45.0 | |
| Jan. 1, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | 14.6 μg/m3 (57) | 57.0 | |
| Jan. 1, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 23.5 μg/m3 (75) | 75.0 | |
| Jan. 1, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 39.0 μg/m3 (110) | 110.0 | |
| Jan. 1, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.4 μg/m3 (100) | 100.0 | |
| Jan. 1, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 58.7 μg/m3 (153) | 153.0 | |
| Jan. 1, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 87.4 μg/m3 (168) | 168.0 | |
| Jan. 1, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 66.2 μg/m3 (157) | 157.0 | |
| Jan. 1, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 72.0 μg/m3 (160) | 160.0 | |
| Jan. 1, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | 71.0 μg/m3 (160) | 160.0 | |
| Jan. 1, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 76.2 μg/m3 (162) | 162.0 | |
| Jan. 1, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 62.0 μg/m3 (155) | 155.0 | |
| Jan. 1, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (6) | N/A | N/A | 39.8 μg/m3 (112) | 112.0 | |
| Jan. 1, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (15) | N/A | N/A | 25.2 μg/m3 (79) | 79.0 | |
| Jan. 1, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 16.1 μg/m3 (60) | 60.0 | |
| Jan. 1, 2021, midnight | 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 | |
| Dec. 31, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 9.2 μg/m3 (39) | 39.0 | |
| Dec. 31, 2020, 10 p.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 | |
| Dec. 31, 2020, 9 p.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 | |
| Dec. 31, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 7.8 μg/m3 (33) | 33.0 | |
| Dec. 31, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Dec. 31, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 11.2 μg/m3 (47) | 47.0 | |
| Dec. 31, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 15.2 μg/m3 (58) | 58.0 | |
| Dec. 31, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Dec. 31, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 15.8 μg/m3 (59) | 59.0 | |
| Dec. 31, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 15.9 μg/m3 (59) | 59.0 | |
| Dec. 31, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 10.1 μg/m3 (43) | 43.0 | |
| Dec. 31, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 13.3 μg/m3 (54) | 54.0 | |
| Dec. 31, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.6 μg/m3 (49) | 49.0 | |
| Dec. 31, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.1 μg/m3 (54) | 54.0 | |
| Dec. 31, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 15.5 μg/m3 (59) | 59.0 | |
| Dec. 31, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 21.1 μg/m3 (70) | 70.0 | |
| Dec. 31, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 29.2 μg/m3 (87) | 87.0 | |
| Dec. 31, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 22.7 μg/m3 (74) | 74.0 | |
| Dec. 31, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 31.5 μg/m3 (92) | 92.0 | |
| Dec. 31, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 22.7 μg/m3 (74) | 74.0 | |
| Dec. 31, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 19.1 μg/m3 (66) | 66.0 | |
| Dec. 31, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | N/A | 6.1 μg/m3 (26) | 26.0 | |
| Dec. 31, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 5.9 μg/m3 (25) | 26.0 | |
| Dec. 31, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 7.7 μg/m3 (33) | 33.0 | |
| Dec. 30, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 6.4 μg/m3 (27) | 31.0 | |
| Dec. 30, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 6.3 μg/m3 (27) | 34.0 | |
| Dec. 30, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 3.6 μg/m3 (16) | 33.0 | |
| Dec. 30, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 4.5 μg/m3 (19) | 31.0 | |
| Dec. 30, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Dec. 30, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.8 μg/m3 (29) | 29.0 | |
| Dec. 30, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 5.1 μg/m3 (22) | 22.0 | |
| Dec. 30, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (10) | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| Dec. 30, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Dec. 30, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 6.1 μg/m3 (26) | 26.0 | |
| Dec. 30, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 3.2 μg/m3 (14) | 14.0 | |
| Dec. 30, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | N/A | 4.6 μg/m3 (20) | 20.0 | |
| Dec. 30, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.4 μg/m3 (23) | 23.0 | |
| Dec. 30, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.4 μg/m3 (31) | 31.0 | |
| Dec. 30, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Dec. 30, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 12.8 μg/m3 (53) | 53.0 | |
| Dec. 30, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 20.8 μg/m3 (70) | 70.0 | |
| Dec. 30, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 21.1 μg/m3 (70) | 70.0 | |
| Dec. 30, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 16.3 μg/m3 (60) | 60.0 | |
| Dec. 30, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 16.8 μg/m3 (61) | 61.0 | |
| Dec. 30, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 10.7 μg/m3 (45) | 45.0 | |
| Dec. 30, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 8.8 μg/m3 (37) | 37.0 | |
| Dec. 30, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 3.3 μg/m3 (14) | 26.0 | |
| Dec. 30, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 3.7 μg/m3 (16) | 34.0 | |
| Dec. 29, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 4.2 μg/m3 (18) | 37.0 | |
| Dec. 29, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 3.2 μg/m3 (14) | 38.0 | |
| Dec. 29, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 3.2 μg/m3 (14) | 37.0 | |
| Dec. 29, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 4.8 μg/m3 (20) | 36.0 | |
| Dec. 29, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 6.0 μg/m3 (25) | 33.0 | |
| Dec. 29, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 3.2 μg/m3 (14) | 31.0 | |
| Dec. 29, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 4.0 μg/m3 (17) | 32.0 | |
| Dec. 29, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 4.5 μg/m3 (19) | 22.0 | |
| Dec. 29, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | 3.9 μg/m3 (17) | 17.0 | |
| Dec. 29, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | 3.6 μg/m3 (16) | 16.0 | |
| Dec. 29, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (16) | N/A | N/A | 4.3 μg/m3 (18) | 18.0 | |
| Dec. 29, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 4.3 μg/m3 (18) | 20.0 | |
| Dec. 29, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.6 μg/m3 (20) | 20.0 | |
| Dec. 29, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.7 μg/m3 (24) | 24.0 | |
| Dec. 29, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 4.7 μg/m3 (20) | 36.0 | |
| Dec. 29, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 4.0 μg/m3 (17) | 39.0 | |
| Dec. 29, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 3.3 μg/m3 (14) | 32.0 | |
| Dec. 29, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 2.8 μg/m3 (12) | 34.0 | |
| Dec. 29, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 1.9 μg/m3 (8) | 35.0 | |
| Dec. 29, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 1.7 μg/m3 (8) | 39.0 | |
| Dec. 29, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 3.2 μg/m3 (14) | 38.0 | |
| Dec. 29, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 4.9 μg/m3 (21) | 38.0 | |
| Dec. 29, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 5.2 μg/m3 (22) | 39.0 | |
| Dec. 29, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 5.1 μg/m3 (22) | 39.0 | |
| Dec. 28, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 7.0 μg/m3 (30) | 38.0 | |
| Dec. 28, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | N/A | 3.2 μg/m3 (14) | 39.0 | |
| Dec. 28, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 3.2 μg/m3 (14) | 41.0 | |
| Dec. 28, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 4.4 μg/m3 (19) | 40.0 | |
| Dec. 28, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 5.6 μg/m3 (24) | 40.0 | |
| Dec. 28, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 6.1 μg/m3 (26) | 40.0 | |
| Dec. 28, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 7.1 μg/m3 (30) | 38.0 | |
| Dec. 28, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 1.3 μg/m3 (6) | 37.0 | |
| Dec. 28, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 2.1 μg/m3 (9) | 38.0 | |
| Dec. 28, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 3.8 μg/m3 (16) | 34.0 | |
| Dec. 28, 2020, 1 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 | |
| Dec. 28, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 0.6 μg/m3 (3) | 41.0 | |
| Dec. 28, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.2 μg/m3 (14) | 14.0 | |
| Dec. 28, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.3 μg/m3 (27) | 27.0 | |
| Dec. 28, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | N/A | 8.9 μg/m3 (38) | 38.0 | |
| Dec. 28, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 12.7 μg/m3 (53) | 53.0 | |
| Dec. 28, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 9.2 μg/m3 (39) | 39.0 | |
| Dec. 28, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (23) | N/A | N/A | 18.0 μg/m3 (64) | 64.0 | |
| Dec. 28, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 12.7 μg/m3 (53) | 53.0 | |
| Dec. 28, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 13.5 μg/m3 (54) | 54.0 | |
| Dec. 28, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 13.1 μg/m3 (54) | 54.0 | |
| Dec. 28, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 6.8 μg/m3 (29) | 33.0 | |
| Dec. 28, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 7.7 μg/m3 (33) | 34.0 | |
| Dec. 28, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 10.5 μg/m3 (44) | 44.0 | |
| Dec. 27, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 6.9 μg/m3 (29) | 36.0 | |
| Dec. 27, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 7.1 μg/m3 (30) | 37.0 | |
| Dec. 27, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 8.3 μg/m3 (35) | 35.0 | |
| Dec. 27, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 7.4 μg/m3 (31) | 37.0 | |
| Dec. 27, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 5.8 μg/m3 (25) | 37.0 | |
| Dec. 27, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 4.1 μg/m3 (18) | 36.0 | |
| Dec. 27, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 6.4 μg/m3 (27) | 34.0 | |
| Dec. 27, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 7.9 μg/m3 (33) | 33.0 | |
| Dec. 27, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | N/A | 15.3 μg/m3 (58) | 58.0 | |
| Dec. 27, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (13) | N/A | N/A | 20.2 μg/m3 (69) | 69.0 | |
| Dec. 27, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | 18.8 μg/m3 (66) | 66.0 | |
| Dec. 27, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (17) | N/A | N/A | 18.3 μg/m3 (65) | 65.0 | |
| Dec. 27, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 14.5 μg/m3 (57) | 57.0 | |
| Dec. 27, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.6 μg/m3 (59) | 59.0 | |
| Dec. 27, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.2 μg/m3 (52) | 52.0 | |
| Dec. 27, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 14.5 μg/m3 (57) | 57.0 | |
| Dec. 27, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 14.9 μg/m3 (57) | 57.0 |