Columbus GA, US: 32.5214, -84.9436
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 23, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | N/A | 28.6 μg/m3 (85) | 85.0 | |
| March 23, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 25.5 μg/m3 (79) | 79.0 | |
| March 23, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 22.2 μg/m3 (72) | 72.0 | |
| March 23, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 18.0 μg/m3 (63) | 63.0 | |
| March 23, 2019, 9 a.m. | 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 | |
| March 23, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 15.9 μg/m3 (58) | 58.0 | |
| March 23, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 12.2 μg/m3 (50) | 50.0 | |
| March 23, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | N/A | 10.1 μg/m3 (42) | 42.0 | |
| March 23, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 10.1 μg/m3 (42) | 42.0 | |
| March 23, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 15.0 μg/m3 (56) | 56.0 | |
| March 23, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 9.4 μg/m3 (39) | 39.0 | |
| March 23, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 8.3 μg/m3 (35) | 35.0 | |
| March 23, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 7.1 μg/m3 (30) | 30.0 | |
| March 23, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 3.9 μg/m3 (16) | 29.0 | |
| March 22, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 1.6 μg/m3 (7) | 38.0 | |
| March 22, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 3.7 μg/m3 (15) | 41.0 | |
| March 22, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 5.3 μg/m3 (22) | 41.0 | |
| March 22, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 4.2 μg/m3 (18) | 40.0 | |
| March 22, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 7.3 μg/m3 (30) | 41.0 | |
| March 22, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 9.4 μg/m3 (39) | 39.0 | |
| March 22, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 1.8 μg/m3 (8) | 38.0 | |
| March 22, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 6.2 μg/m3 (26) | 35.0 | |
| March 22, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 7.8 μg/m3 (32) | 33.0 | |
| March 22, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | N/A | 9.6 μg/m3 (40) | 40.0 | |
| March 22, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 6.3 μg/m3 (26) | 29.0 | |
| March 22, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 7.5 μg/m3 (31) | 31.0 | |
| March 22, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 5.4 μg/m3 (23) | 23.0 | |
| March 22, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 6.6 μg/m3 (28) | 28.0 | |
| March 22, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 8.6 μg/m3 (36) | 36.0 | |
| March 22, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 6.2 μg/m3 (26) | 29.0 | |
| March 22, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 5.9 μg/m3 (25) | 31.0 | |
| March 22, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 5.9 μg/m3 (25) | 33.0 | |
| March 22, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 8.2 μg/m3 (34) | 34.0 | |
| March 22, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 5.7 μg/m3 (24) | 32.0 | |
| March 22, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 9.5 μg/m3 (40) | 40.0 | |
| March 22, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 22, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 6.0 μg/m3 (25) | 27.0 | |
| March 22, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 4.6 μg/m3 (19) | 33.0 | |
| March 21, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 3.5 μg/m3 (15) | 38.0 | |
| March 21, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 0.9 μg/m3 (4) | 39.0 | |
| March 21, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| March 21, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| March 21, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 0.9 μg/m3 (4) | 40.0 | |
| March 21, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 0.2 μg/m3 (1) | 41.0 | |
| March 21, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 2.0 μg/m3 (8) | 40.0 | |
| March 21, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 4.0 μg/m3 (17) | 39.0 | |
| March 21, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 21, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 28.6 μg/m3 (85) | 85.0 | |
| March 21, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 51.3 μg/m3 (140) | 140.0 | |
| March 21, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | N/A | 44.6 μg/m3 (123) | 123.0 | |
| March 21, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | N/A | N/A | 44.1 μg/m3 (122) | 122.0 | |
| March 21, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 38.7 μg/m3 (108) | 108.0 | |
| March 21, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 35.0 μg/m3 (99) | 99.0 | |
| March 21, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 32.5 μg/m3 (94) | 94.0 | |
| March 21, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 32.4 μg/m3 (93) | 93.0 | |
| March 21, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 32.5 μg/m3 (94) | 94.0 | |
| March 21, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 42.2 μg/m3 (117) | 117.0 | |
| March 21, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 34.9 μg/m3 (99) | 99.0 | |
| March 21, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 36.9 μg/m3 (104) | 104.0 | |
| March 21, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 31.5 μg/m3 (91) | 91.0 | |
| March 21, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 25.2 μg/m3 (78) | 78.0 | |
| March 21, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 23.4 μg/m3 (74) | 74.0 | |
| March 20, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 64.0 ppb (49) | N/A | N/A | 24.3 μg/m3 (76) | 76.0 | |
| March 20, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 66.0 ppb (51) | N/A | N/A | 33.6 μg/m3 (96) | 96.0 | |
| March 20, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 69.0 ppb (53) | N/A | N/A | 30.4 μg/m3 (89) | 89.0 | |
| March 20, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 68.0 ppb (52) | N/A | N/A | 22.9 μg/m3 (73) | 73.0 | |
| March 20, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 65.0 ppb (50) | N/A | N/A | 17.2 μg/m3 (61) | 61.0 | |
| March 20, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (48) | N/A | N/A | 9.5 μg/m3 (40) | 48.0 | |
| March 20, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (45) | N/A | N/A | 9.4 μg/m3 (39) | 45.0 | |
| March 20, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (43) | N/A | N/A | 9.6 μg/m3 (40) | 43.0 | |
| March 20, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 9.5 μg/m3 (40) | 40.0 | |
| March 20, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 15.1 μg/m3 (57) | 57.0 | |
| March 20, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 15.6 μg/m3 (58) | 58.0 | |
| March 20, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 14.9 μg/m3 (56) | 56.0 | |
| March 20, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 13.4 μg/m3 (53) | 53.0 | |
| March 20, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 13.8 μg/m3 (54) | 54.0 | |
| March 20, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 13.7 μg/m3 (54) | 54.0 | |
| March 20, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 12.7 μg/m3 (51) | 51.0 | |
| March 20, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 9.1 μg/m3 (38) | 38.0 | |
| March 20, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 11.4 μg/m3 (48) | 48.0 | |
| March 20, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 16.9 μg/m3 (60) | 60.0 | |
| March 20, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 44.5 μg/m3 (122) | 122.0 | |
| March 20, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 76.5 μg/m3 (161) | 161.0 | |
| March 20, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 ppb (45) | N/A | N/A | 61.2 μg/m3 (153) | 153.0 | |
| March 20, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 60.0 ppb (46) | N/A | N/A | 50.2 μg/m3 (137) | 137.0 | |
| March 20, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 ppb (47) | N/A | N/A | 19.5 μg/m3 (66) | 66.0 | |
| March 19, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (44) | N/A | N/A | 7.2 μg/m3 (30) | 44.0 | |
| March 19, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (43) | N/A | N/A | 7.3 μg/m3 (30) | 43.0 | |
| March 19, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (43) | N/A | N/A | 6.8 μg/m3 (28) | 43.0 | |
| March 19, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | N/A | 5.7 μg/m3 (24) | 42.0 | |
| March 19, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | N/A | 4.4 μg/m3 (18) | 42.0 | |
| March 19, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 4.7 μg/m3 (20) | 40.0 | |
| March 19, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 4.5 μg/m3 (19) | 38.0 | |
| March 19, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 5.4 μg/m3 (23) | 37.0 | |
| March 19, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 5.7 μg/m3 (24) | 35.0 | |
| March 19, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 6.1 μg/m3 (25) | 34.0 | |
| March 19, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 6.6 μg/m3 (28) | 32.0 | |
| March 19, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 4.6 μg/m3 (19) | 32.0 | |
| March 19, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 4.7 μg/m3 (20) | 30.0 | |
| March 19, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 5.4 μg/m3 (23) | 29.0 | |
| March 19, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 3.6 μg/m3 (15) | 29.0 | |
| March 19, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | N/A | 3.1 μg/m3 (13) | 32.0 | |
| March 19, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 1.1 μg/m3 (5) | 33.0 | |
| March 19, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 2.8 μg/m3 (12) | 35.0 | |
| March 19, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 4.4 μg/m3 (18) | 35.0 | |
| March 19, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 6.6 μg/m3 (28) | 35.0 | |
| March 19, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 6.2 μg/m3 (26) | 36.0 | |
| March 19, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 5.4 μg/m3 (23) | 37.0 | |
| March 19, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 19, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 8.5 μg/m3 (35) | 37.0 | |
| March 18, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 5.5 μg/m3 (23) | 39.0 | |
| March 18, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 6.5 μg/m3 (27) | 39.0 | |
| March 18, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 11.7 μg/m3 (49) | 49.0 | |
| March 18, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | N/A | 7.5 μg/m3 (31) | 42.0 | |
| March 18, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 10.2 μg/m3 (42) | 42.0 | |
| March 18, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | N/A | 7.3 μg/m3 (30) | 42.0 | |
| March 18, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 8.7 μg/m3 (36) | 41.0 | |
| March 18, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 3.2 μg/m3 (13) | 41.0 | |
| March 18, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 2.9 μg/m3 (12) | 38.0 | |
| March 18, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 5.7 μg/m3 (24) | 36.0 | |
| March 18, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | N/A | 5.6 μg/m3 (23) | 32.0 | |
| March 18, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 5.6 μg/m3 (23) | 28.0 | |
| March 18, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 5.5 μg/m3 (23) | 28.0 | |
| March 18, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 5.6 μg/m3 (23) | 25.0 | |
| March 18, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 18, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.1 μg/m3 (21) | 21.0 | |
| March 18, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 5.3 μg/m3 (22) | 22.0 | |
| March 18, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 5.2 μg/m3 (22) | 22.0 | |
| March 18, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 18, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 18, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 18, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 10.6 μg/m3 (44) | 44.0 | |
| March 18, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 10.7 μg/m3 (45) | 45.0 | |
| March 18, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 5.5 μg/m3 (23) | 25.0 | |
| March 17, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 1.6 μg/m3 (7) | 35.0 | |
| March 17, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 2.5 μg/m3 (10) | 39.0 | |
| March 17, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 3.1 μg/m3 (13) | 39.0 | |
| March 17, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | N/A | 39.0 | |
| March 17, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 0.5 μg/m3 (2) | 39.0 | |
| March 17, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 2.8 μg/m3 (12) | 38.0 | |
| March 17, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 2.1 μg/m3 (9) | 37.0 | |
| March 17, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 4.5 μg/m3 (19) | 34.0 | |
| March 17, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 6.3 μg/m3 (26) | 30.0 | |
| March 17, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 4.2 μg/m3 (18) | 25.0 | |
| March 17, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 5.1 μg/m3 (21) | 24.0 | |
| March 17, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 4.3 μg/m3 (18) | 24.0 | |
| March 17, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 4.1 μg/m3 (17) | 25.0 | |
| March 17, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 4.4 μg/m3 (18) | 24.0 | |
| March 17, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 5.7 μg/m3 (24) | 24.0 | |
| March 17, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 5.7 μg/m3 (24) | 24.0 | |
| March 17, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 8.8 μg/m3 (37) | 37.0 | |
| March 17, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 9.5 μg/m3 (40) | 40.0 | |
| March 17, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 9.5 μg/m3 (40) | 40.0 | |
| March 17, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 11.2 μg/m3 (47) | 47.0 | |
| March 17, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 17, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 7.2 μg/m3 (30) | 30.0 | |
| March 17, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 5.8 μg/m3 (24) | 24.0 | |
| March 17, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 3.9 μg/m3 (16) | 27.0 | |
| March 16, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | N/A | 3.8 μg/m3 (16) | 32.0 | |
| March 16, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 1.7 μg/m3 (7) | 33.0 | |
| March 16, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 2.1 μg/m3 (9) | 34.0 | |
| March 16, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 1.8 μg/m3 (8) | 33.0 | |
| March 16, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 1.0 μg/m3 (4) | 32.0 | |
| March 16, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 1.1 μg/m3 (5) | 32.0 | |
| March 16, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 2.4 μg/m3 (10) | 31.0 | |
| March 16, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 1.3 μg/m3 (5) | 30.0 | |
| March 16, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 2.7 μg/m3 (11) | 31.0 | |
| March 16, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 2.6 μg/m3 (11) | 31.0 |