San Luis Obispo Co CA, US: 35.04676, -120.58777
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 21, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 μg/m3 (34) | 7.0 μg/m3 (29) | 34.0 | |
| Sept. 21, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 72.0 μg/m3 (58) | 9.0 μg/m3 (38) | 58.0 | |
| Sept. 21, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 69.0 μg/m3 (57) | 12.0 μg/m3 (50) | 57.0 | |
| Sept. 21, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 μg/m3 (46) | 9.0 μg/m3 (38) | 46.0 | |
| Sept. 21, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 μg/m3 (35) | 6.0 μg/m3 (25) | 35.0 | |
| Sept. 21, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 μg/m3 (27) | 4.0 μg/m3 (17) | 27.0 | |
| Sept. 21, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (22) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 21, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | 9.0 μg/m3 (38) | 38.0 | |
| Sept. 21, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (23) | 9.0 μg/m3 (38) | 38.0 | |
| Sept. 21, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (22) | 9.0 μg/m3 (38) | 38.0 | |
| Sept. 21, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 μg/m3 (26) | 9.0 μg/m3 (38) | 38.0 | |
| Sept. 21, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (22) | 5.0 μg/m3 (21) | 22.0 | |
| Sept. 21, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (23) | 3.0 μg/m3 (12) | 23.0 | |
| Sept. 21, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 21, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 μg/m3 (29) | 8.0 μg/m3 (33) | 33.0 | |
| Sept. 21, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 μg/m3 (39) | 9.0 μg/m3 (38) | 39.0 | |
| Sept. 21, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m3 (31) | 10.0 μg/m3 (42) | 42.0 | |
| Sept. 20, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 105.0 μg/m3 (75) | 28.0 μg/m3 (84) | 84.0 | |
| Sept. 20, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 241.0 μg/m3 (143) | 71.0 μg/m3 (158) | 158.0 | |
| Sept. 20, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 158.0 μg/m3 (102) | 44.0 μg/m3 (121) | 121.0 | |
| Sept. 20, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 136.0 μg/m3 (90) | 38.0 μg/m3 (106) | 106.0 | |
| Sept. 20, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 77.0 μg/m3 (61) | 22.0 μg/m3 (71) | 71.0 | |
| Sept. 20, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 μg/m3 (34) | 3.0 μg/m3 (12) | 34.0 | |
| Sept. 20, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 μg/m3 (28) | 3.0 μg/m3 (12) | 28.0 | |
| Sept. 20, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 μg/m3 (38) | 4.0 μg/m3 (17) | 38.0 | |
| Sept. 20, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 μg/m3 (43) | 8.0 μg/m3 (33) | 43.0 | |
| Sept. 20, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 68.0 μg/m3 (56) | 7.0 μg/m3 (29) | 56.0 | |
| Sept. 20, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 μg/m3 (38) | 4.0 μg/m3 (17) | 38.0 | |
| Sept. 20, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 μg/m3 (37) | 4.0 μg/m3 (17) | 37.0 | |
| Sept. 20, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 4.0 μg/m3 (17) | 21.0 | |
| Sept. 20, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 2.0 μg/m3 (8) | 21.0 | |
| Sept. 20, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 20, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 20, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 20, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 3.0 μg/m3 (12) | 13.0 | |
| Sept. 20, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 20, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (22) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 20, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 20, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m3 (31) | 8.0 μg/m3 (33) | 33.0 | |
| Sept. 20, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 μg/m3 (54) | 13.0 μg/m3 (52) | 54.0 | |
| Sept. 20, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 220.0 μg/m3 (132) | 46.0 μg/m3 (126) | 132.0 | |
| Sept. 19, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 298.0 μg/m3 (172) | 83.0 μg/m3 (164) | 172.0 | |
| Sept. 19, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 304.0 μg/m3 (174) | 75.0 μg/m3 (160) | 174.0 | |
| Sept. 19, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 359.0 μg/m3 (206) | 89.0 μg/m3 (168) | 206.0 | |
| Sept. 19, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 333.0 μg/m3 (189) | 78.0 μg/m3 (162) | 189.0 | |
| Sept. 19, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 110.0 μg/m3 (78) | 29.0 μg/m3 (86) | 86.0 | |
| Sept. 19, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 3.0 μg/m3 (12) | 15.0 | |
| Sept. 19, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 19, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 19, 2019, 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 | |
| Sept. 19, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 19, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 19, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 19, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 19, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 19, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 19, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 19, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 19, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 19, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 1.0 μg/m3 (4) | 9.0 | |
| Sept. 19, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 19, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 19, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 19, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 9.0 μg/m3 (38) | 38.0 | |
| Sept. 19, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 75.0 μg/m3 (60) | 14.0 μg/m3 (54) | 60.0 | |
| Sept. 18, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 160.0 μg/m3 (102) | 38.0 μg/m3 (106) | 106.0 | |
| Sept. 18, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 181.0 μg/m3 (113) | 40.0 μg/m3 (111) | 113.0 | |
| Sept. 18, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 μg/m3 (48) | 11.0 μg/m3 (46) | 48.0 | |
| Sept. 18, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 18, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 μg/m3 (25) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 18, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 μg/m3 (28) | 6.0 μg/m3 (25) | 28.0 | |
| Sept. 18, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 μg/m3 (33) | 9.0 μg/m3 (38) | 38.0 | |
| Sept. 18, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 μg/m3 (49) | 9.0 μg/m3 (38) | 49.0 | |
| Sept. 18, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 μg/m3 (50) | 9.0 μg/m3 (38) | 50.0 | |
| Sept. 18, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 64.0 μg/m3 (54) | 10.0 μg/m3 (42) | 54.0 | |
| Sept. 18, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 μg/m3 (42) | 7.0 μg/m3 (29) | 42.0 | |
| Sept. 18, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (24) | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 18, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (22) | 4.0 μg/m3 (17) | 22.0 | |
| Sept. 18, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (19) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 18, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 8.0 μg/m3 (33) | 33.0 | |
| Sept. 18, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 μg/m3 (25) | 8.0 μg/m3 (33) | 33.0 | |
| Sept. 18, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 18, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (19) | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 18, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 18, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 18, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 18, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (24) | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 18, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 18, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 μg/m3 (45) | 9.0 μg/m3 (38) | 45.0 | |
| Sept. 17, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 219.0 μg/m3 (132) | 52.0 μg/m3 (141) | 141.0 | |
| Sept. 17, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 489.0 μg/m3 (380) | 125.0 μg/m3 (187) | 380.0 | |
| Sept. 17, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 404.0 μg/m3 (270) | 90.0 μg/m3 (168) | 270.0 | |
| Sept. 17, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 163.0 μg/m3 (104) | 35.0 μg/m3 (99) | 104.0 | |
| Sept. 17, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 81.0 μg/m3 (63) | 21.0 μg/m3 (69) | 69.0 | |
| Sept. 17, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 17, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (19) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 17, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 17, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 μg/m3 (27) | 6.0 μg/m3 (25) | 27.0 | |
| Sept. 17, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (19) | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 17, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 17, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 17, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 17, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 2.0 μg/m3 (8) | 12.0 | |
| Sept. 17, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 17, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 17, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 17, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (19) | 4.0 μg/m3 (17) | 19.0 | |
| Sept. 17, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (23) | 5.0 μg/m3 (21) | 23.0 | |
| Sept. 17, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 17, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 0.0 μg/m3 (0) | 16.0 | |
| Sept. 17, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 17, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 μg/m3 (51) | 11.0 μg/m3 (46) | 51.0 | |
| Sept. 17, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 175.0 μg/m3 (110) | 33.0 μg/m3 (95) | 110.0 | |
| Sept. 16, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 μg/m3 (35) | 10.0 μg/m3 (42) | 42.0 | |
| Sept. 16, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 16, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 1.0 μg/m3 (4) | 13.0 | |
| Sept. 16, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 2.0 μg/m3 (8) | 10.0 | |
| Sept. 16, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 2.0 μg/m3 (8) | 13.0 | |
| Sept. 16, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 μg/m3 (25) | 3.0 μg/m3 (12) | 25.0 | |
| Sept. 16, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 16, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 3.0 μg/m3 (12) | 15.0 | |
| Sept. 16, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | 2.0 μg/m3 (8) | 17.0 | |
| Sept. 16, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 1.0 μg/m3 (4) | 10.0 | |
| Sept. 16, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 3.0 μg/m3 (12) | 14.0 | |
| Sept. 16, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 16, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 2.0 μg/m3 (8) | 9.0 | |
| Sept. 16, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 16, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 16, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 16, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 16, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 16, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 16, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 16, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 16, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 3.0 μg/m3 (12) | 15.0 | |
| Sept. 16, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (19) | 4.0 μg/m3 (17) | 19.0 | |
| Sept. 16, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 15, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 15, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 15, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 15, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 15, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 3.0 μg/m3 (12) | 15.0 | |
| Sept. 15, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 15, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 1.0 μg/m3 (4) | 4.0 | |
| Sept. 15, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 15, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 15, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 1.0 μg/m3 (4) | 4.0 | |
| Sept. 15, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 0.0 μg/m3 (0) | 3.0 | |
| Sept. 15, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 0.0 μg/m3 (0) | 5.0 | |
| Sept. 15, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 0.0 μg/m3 (0) | 4.0 | |
| Sept. 15, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 15, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 4.0 μg/m3 (17) | 17.0 | |
| Sept. 15, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 15, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 15, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 15, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 15, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 15, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 15, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 15, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 9.0 μg/m3 (38) | 38.0 | |
| Sept. 15, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | 6.0 μg/m3 (25) | 25.0 | |
| Sept. 14, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 μg/m3 (30) | 6.0 μg/m3 (25) | 30.0 | |
| Sept. 14, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 μg/m3 (32) | 8.0 μg/m3 (33) | 33.0 | |
| Sept. 14, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 μg/m3 (46) | 13.0 μg/m3 (52) | 52.0 | |
| Sept. 14, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 μg/m3 (46) | 13.0 μg/m3 (52) | 52.0 | |
| Sept. 14, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 μg/m3 (42) | 13.0 μg/m3 (52) | 52.0 | |
| Sept. 14, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m3 (31) | 15.0 μg/m3 (56) | 56.0 | |
| Sept. 14, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 μg/m3 (48) | 7.0 μg/m3 (29) | 48.0 |