Phoenix (Estrella) AZ, US: 33.4265, -112.1181
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 22, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 μg/m3 (34) | 6.1 μg/m3 (25) | 34.0 | |
| May 22, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 42.0 μg/m3 (38) | 7.4 μg/m3 (31) | 38.0 | |
| May 22, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 38.0 μg/m3 (35) | 5.6 μg/m3 (23) | 35.0 | |
| May 22, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 40.0 μg/m3 (36) | 8.3 μg/m3 (35) | 36.0 | |
| May 22, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 32.0 μg/m3 (29) | 7.3 μg/m3 (30) | 30.0 | |
| May 22, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.0 μg/m3 (24) | 8.8 μg/m3 (37) | 37.0 | |
| May 22, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.0 μg/m3 (25) | 11.2 μg/m3 (47) | 47.0 | |
| May 22, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.0 μg/m3 (28) | 10.0 μg/m3 (42) | 42.0 | |
| May 22, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 60.0 μg/m3 (52) | 17.9 μg/m3 (63) | 63.0 | |
| May 22, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 80.0 μg/m3 (62) | 18.4 μg/m3 (64) | 64.0 | |
| May 22, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 57.0 μg/m3 (51) | 14.0 μg/m3 (54) | 54.0 | |
| May 22, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 103.0 μg/m3 (74) | 15.3 μg/m3 (57) | 74.0 | |
| May 22, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 41.0 μg/m3 (37) | 1.8 μg/m3 (8) | 37.0 | |
| May 22, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 1.7 μg/m3 (7) | 13.0 | |
| May 22, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 0.9 μg/m3 (4) | 9.0 | |
| May 22, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 1.1 μg/m3 (5) | 9.0 | |
| May 22, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.0 μg/m3 (10) | 2.7 μg/m3 (11) | 11.0 | |
| May 21, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 3.8 μg/m3 (16) | 16.0 | |
| May 21, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 1.8 μg/m3 (8) | 9.0 | |
| May 21, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 3.7 μg/m3 (15) | 15.0 | |
| May 21, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (15) | 4.6 μg/m3 (19) | 19.0 | |
| May 21, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.0 μg/m3 (17) | 3.1 μg/m3 (13) | 17.0 | |
| May 21, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (15) | 3.2 μg/m3 (13) | 15.0 | |
| May 21, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.0 μg/m3 (25) | 4.3 μg/m3 (18) | 25.0 | |
| May 21, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.0 μg/m3 (28) | 6.2 μg/m3 (26) | 28.0 | |
| May 21, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 62.0 μg/m3 (54) | 8.2 μg/m3 (34) | 54.0 | |
| May 21, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 83.0 μg/m3 (64) | 11.3 μg/m3 (47) | 64.0 | |
| May 21, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 38.0 μg/m3 (35) | 10.0 μg/m3 (42) | 42.0 | |
| May 21, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 μg/m3 (34) | 9.2 μg/m3 (38) | 38.0 | |
| May 21, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 25.0 | |
| May 21, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.0 μg/m3 (25) | 10.5 μg/m3 (44) | 44.0 | |
| May 21, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.0 μg/m3 (28) | 8.8 μg/m3 (37) | 37.0 | |
| May 21, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.0 μg/m3 (21) | 5.8 μg/m3 (24) | 24.0 | |
| May 21, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.0 μg/m3 (25) | 6.9 μg/m3 (29) | 29.0 | |
| May 21, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 30.0 μg/m3 (27) | 8.8 μg/m3 (37) | 37.0 | |
| May 21, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 5.2 μg/m3 (22) | 22.0 | |
| May 21, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 3.4 μg/m3 (14) | 18.0 | |
| May 21, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 4.0 μg/m3 (17) | 18.0 | |
| May 21, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 8.0 μg/m3 (7) | -0.1 μg/m3 (0) | 7.0 | |
| May 21, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 8.0 μg/m3 (7) | -0.5 μg/m3 (0) | 7.0 | |
| May 21, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (15) | 7.4 μg/m3 (31) | 31.0 | |
| May 20, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.0 μg/m3 (10) | 1.5 μg/m3 (6) | 10.0 | |
| May 20, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.0 μg/m3 (10) | -0.1 μg/m3 (0) | 10.0 | |
| May 20, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 2.2 μg/m3 (9) | 14.0 | |
| May 20, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.0 μg/m3 (17) | 4.8 μg/m3 (20) | 20.0 | |
| May 20, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.0 μg/m3 (20) | 6.4 μg/m3 (27) | 27.0 | |
| May 20, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 24.0 μg/m3 (22) | 6.8 μg/m3 (28) | 28.0 | |
| May 20, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.0 μg/m3 (26) | 8.7 μg/m3 (36) | 36.0 | |
| May 20, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.0 μg/m3 (28) | 8.8 μg/m3 (37) | 37.0 | |
| May 20, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 42.0 μg/m3 (38) | 7.2 μg/m3 (30) | 38.0 | |
| May 20, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 82.0 μg/m3 (64) | 11.2 μg/m3 (47) | 64.0 | |
| May 20, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 93.0 μg/m3 (69) | 12.5 μg/m3 (51) | 69.0 | |
| May 20, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.0 μg/m3 (28) | 6.4 μg/m3 (27) | 28.0 | |
| May 20, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 3.8 μg/m3 (16) | 16.0 | |
| May 20, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 1.8 μg/m3 (8) | 11.0 | |
| May 20, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 3.9 μg/m3 (16) | 16.0 | |
| May 20, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 3.6 μg/m3 (15) | 15.0 | |
| May 20, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 3.1 μg/m3 (13) | 13.0 | |
| May 20, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.0 μg/m3 (10) | 2.1 μg/m3 (9) | 10.0 | |
| May 20, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 2.8 μg/m3 (12) | 13.0 | |
| May 20, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 3.5 μg/m3 (15) | 18.0 | |
| May 20, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.0 μg/m3 (25) | 4.6 μg/m3 (19) | 25.0 | |
| May 20, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.0 μg/m3 (26) | 5.6 μg/m3 (23) | 26.0 | |
| May 20, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 50.0 μg/m3 (45) | 7.4 μg/m3 (31) | 45.0 | |
| May 20, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 71.0 μg/m3 (58) | 4.5 μg/m3 (19) | 58.0 | |
| May 19, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 48.0 μg/m3 (44) | 1.7 μg/m3 (7) | 44.0 | |
| May 19, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 51.0 μg/m3 (46) | 4.4 μg/m3 (18) | 46.0 | |
| May 19, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 42.0 μg/m3 (38) | 4.1 μg/m3 (17) | 38.0 | |
| May 19, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.0 μg/m3 (24) | 3.6 μg/m3 (15) | 24.0 | |
| May 19, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 3.1 μg/m3 (13) | 16.0 | |
| May 19, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 2.7 μg/m3 (11) | 11.0 | |
| May 19, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | -0.5 μg/m3 (0) | 16.0 | |
| May 19, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.0 μg/m3 (25) | 2.7 μg/m3 (11) | 25.0 | |
| May 19, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 μg/m3 (34) | 5.8 μg/m3 (24) | 34.0 | |
| May 19, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 86.0 μg/m3 (66) | 12.1 μg/m3 (50) | 66.0 | |
| May 19, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 94.0 μg/m3 (70) | 14.6 μg/m3 (56) | 70.0 | |
| May 19, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 39.0 μg/m3 (35) | 7.4 μg/m3 (31) | 35.0 | |
| May 19, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 41.0 μg/m3 (37) | 8.2 μg/m3 (34) | 37.0 | |
| May 19, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 39.0 μg/m3 (35) | 10.8 μg/m3 (45) | 45.0 | |
| May 19, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.0 μg/m3 (20) | 6.6 μg/m3 (28) | 28.0 | |
| May 19, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.0 μg/m3 (20) | 6.5 μg/m3 (27) | 27.0 | |
| May 19, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 4.9 μg/m3 (20) | 20.0 | |
| May 19, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 5.0 μg/m3 (21) | 21.0 | |
| May 19, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 2.8 μg/m3 (12) | 13.0 | |
| May 19, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 4.7 μg/m3 (20) | 20.0 | |
| May 19, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 32.0 μg/m3 (29) | 2.8 μg/m3 (12) | 29.0 | |
| May 19, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 98.0 μg/m3 (72) | 7.4 μg/m3 (31) | 72.0 | |
| May 19, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 87.0 μg/m3 (66) | 5.1 μg/m3 (21) | 66.0 | |
| May 19, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.0 μg/m3 (10) | 2.1 μg/m3 (9) | 10.0 | |
| May 18, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.0 μg/m3 (10) | 2.9 μg/m3 (12) | 12.0 | |
| May 18, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 3.6 μg/m3 (15) | 15.0 | |
| May 18, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 5.0 μg/m3 (21) | 21.0 | |
| May 18, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 5.6 μg/m3 (23) | 23.0 | |
| May 18, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.0 μg/m3 (12) | 3.9 μg/m3 (16) | 16.0 | |
| May 18, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 2.3 μg/m3 (10) | 14.0 | |
| May 18, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.0 μg/m3 (26) | 5.6 μg/m3 (23) | 26.0 | |
| May 18, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 30.0 μg/m3 (27) | 4.7 μg/m3 (20) | 27.0 | |
| May 18, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 45.0 μg/m3 (41) | 8.5 μg/m3 (35) | 41.0 | |
| May 18, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 74.0 μg/m3 (60) | 14.8 μg/m3 (56) | 60.0 | |
| May 18, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 102.0 μg/m3 (74) | 15.7 μg/m3 (58) | 74.0 | |
| May 18, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 109.0 μg/m3 (77) | 16.3 μg/m3 (59) | 77.0 | |
| May 18, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 35.0 μg/m3 (32) | 15.4 μg/m3 (57) | 57.0 | |
| May 18, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.0 μg/m3 (25) | 15.1 μg/m3 (57) | 57.0 | |
| May 18, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 9.0 μg/m3 (8) | 2.0 μg/m3 (8) | 8.0 | |
| May 18, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 5.4 μg/m3 (23) | 23.0 | |
| May 18, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 4.3 μg/m3 (18) | 18.0 | |
| May 18, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.0 μg/m3 (21) | 4.8 μg/m3 (20) | 21.0 | |
| May 18, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 5.0 μg/m3 (21) | 21.0 | |
| May 18, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 3.1 μg/m3 (13) | 16.0 | |
| May 18, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 2.3 μg/m3 (10) | 15.0 | |
| May 18, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 3.7 μg/m3 (15) | 16.0 | |
| May 18, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 4.3 μg/m3 (18) | 18.0 | |
| May 18, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.0 μg/m3 (12) | 4.8 μg/m3 (20) | 20.0 | |
| May 17, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 4.5 μg/m3 (19) | 19.0 | |
| May 17, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 4.6 μg/m3 (19) | 19.0 | |
| May 17, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.0 μg/m3 (20) | 4.0 μg/m3 (17) | 20.0 | |
| May 17, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 3.5 μg/m3 (15) | 15.0 | |
| May 17, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.0 μg/m3 (10) | 3.6 μg/m3 (15) | 15.0 | |
| May 17, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 4.3 μg/m3 (18) | 18.0 | |
| May 17, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 5.1 μg/m3 (21) | 21.0 | |
| May 17, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.0 μg/m3 (17) | 6.4 μg/m3 (27) | 27.0 | |
| May 17, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 4.8 μg/m3 (20) | 20.0 | |
| May 17, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.0 μg/m3 (20) | 7.4 μg/m3 (31) | 31.0 | |
| May 17, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.0 μg/m3 (20) | 6.5 μg/m3 (27) | 27.0 | |
| May 17, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 6.6 μg/m3 (28) | 28.0 | |
| May 17, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 5.7 μg/m3 (24) | 24.0 | |
| May 17, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 0.0 μg/m3 (0) | 9.0 | |
| May 17, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 3.6 μg/m3 (15) | 15.0 | |
| May 17, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 4.1 μg/m3 (17) | 17.0 | |
| May 17, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 25.0 μg/m3 (23) | 4.4 μg/m3 (18) | 23.0 | |
| May 17, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.0 μg/m3 (30) | 5.1 μg/m3 (21) | 30.0 | |
| May 17, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 43.0 μg/m3 (39) | 5.2 μg/m3 (22) | 39.0 | |
| May 17, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.0 μg/m3 (25) | 5.5 μg/m3 (23) | 25.0 | |
| May 17, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 5.3 μg/m3 (22) | 22.0 | |
| May 17, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 3.5 μg/m3 (15) | 15.0 | |
| May 17, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 2.8 μg/m3 (12) | 12.0 | |
| May 17, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 2.7 μg/m3 (11) | 11.0 | |
| May 16, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 1.8 μg/m3 (8) | 9.0 | |
| May 16, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 4.8 μg/m3 (20) | 20.0 | |
| May 16, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 3.4 μg/m3 (14) | 14.0 | |
| May 16, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 4.4 μg/m3 (18) | 18.0 | |
| May 16, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 25.0 μg/m3 (23) | 7.0 μg/m3 (29) | 29.0 | |
| May 16, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.0 μg/m3 (25) | 8.3 μg/m3 (35) | 35.0 | |
| May 16, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.0 μg/m3 (28) | 8.7 μg/m3 (36) | 36.0 | |
| May 16, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.0 μg/m3 (26) | 7.3 μg/m3 (30) | 30.0 | |
| May 16, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 30.0 μg/m3 (27) | 7.8 μg/m3 (32) | 32.0 | |
| May 16, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.0 μg/m3 (26) | 7.3 μg/m3 (30) | 30.0 | |
| May 16, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.0 μg/m3 (25) | 6.5 μg/m3 (27) | 27.0 | |
| May 16, 2020, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 49.0 μg/m3 (45) | 12.6 μg/m3 (51) | 51.0 | |
| May 16, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.0 μg/m3 (19) | 5.3 μg/m3 (22) | 22.0 | |
| May 16, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.0 μg/m3 (20) | 6.8 μg/m3 (28) | 28.0 | |
| May 16, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (15) | 3.0 μg/m3 (12) | 15.0 | |
| May 16, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.0 μg/m3 (21) | 5.2 μg/m3 (22) | 22.0 | |
| May 16, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.0 μg/m3 (25) | 6.0 μg/m3 (25) | 25.0 | |
| May 16, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.0 μg/m3 (30) | 8.6 μg/m3 (36) | 36.0 | |
| May 16, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 34.0 μg/m3 (31) | 7.3 μg/m3 (30) | 31.0 | |
| May 16, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.0 μg/m3 (25) | 6.3 μg/m3 (26) | 26.0 | |
| May 16, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (15) | 5.6 μg/m3 (23) | 23.0 | |
| May 16, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.0 μg/m3 (12) | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 4.9 μg/m3 (20) | 20.0 | |
| May 16, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.0 μg/m3 (20) | 5.8 μg/m3 (24) | 24.0 | |
| May 15, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (15) | 5.0 μg/m3 (21) | 21.0 | |
| May 15, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (15) | 3.7 μg/m3 (15) | 15.0 | |
| May 15, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.0 μg/m3 (19) | 6.3 μg/m3 (26) | 26.0 | |
| May 15, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 6.3 μg/m3 (26) | 26.0 | |
| May 15, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 μg/m3 (34) | 8.4 μg/m3 (35) | 35.0 |