Yuma (Arc Center) AZ, US: 32.690277, -114.614441
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 23, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | 19.0 μg/m3 (17) | 13.0 μg/m3 (52) | 52.0 | |
| Jan. 23, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 17.0 μg/m3 (15) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 23, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 16.0 μg/m3 (15) | 6.0 μg/m3 (25) | 28.0 | |
| Jan. 23, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 23.0 μg/m3 (21) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 23, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 11.0 μg/m3 (10) | 3.0 μg/m3 (12) | 32.0 | |
| Jan. 22, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 30.0 μg/m3 (27) | 5.0 μg/m3 (21) | 35.0 | |
| Jan. 22, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 17.0 μg/m3 (15) | 6.0 μg/m3 (25) | 35.0 | |
| Jan. 22, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | 17.0 μg/m3 (15) | 8.0 μg/m3 (33) | 34.0 | |
| Jan. 22, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 20.0 μg/m3 (18) | 7.0 μg/m3 (29) | 33.0 | |
| Jan. 22, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 19.0 μg/m3 (17) | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 22, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 30.0 μg/m3 (27) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 22, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | 31.0 μg/m3 (28) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 22, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | 23.0 μg/m3 (21) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 22, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | 9.0 μg/m3 (8) | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 22, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | 3.0 μg/m3 (3) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 22, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 24.0 μg/m3 (22) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 22, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 31.0 μg/m3 (28) | 13.0 μg/m3 (52) | 52.0 | |
| Jan. 22, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 18.0 μg/m3 (16) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 22, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 12.0 μg/m3 (11) | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 22, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 13.0 μg/m3 (12) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 22, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 14.0 μg/m3 (13) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 22, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | 13.0 μg/m3 (12) | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 22, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | 8.0 μg/m3 (7) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 22, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | 9.0 μg/m3 (8) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 22, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | 7.0 μg/m3 (6) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 22, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 8.0 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 22, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 12.0 μg/m3 (11) | 5.0 μg/m3 (21) | 23.0 | |
| Jan. 22, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 16.0 μg/m3 (15) | 3.0 μg/m3 (12) | 23.0 | |
| Jan. 22, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 7.0 μg/m3 (6) | 5.0 μg/m3 (21) | 30.0 | |
| Jan. 21, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 3.0 μg/m3 (3) | 4.0 μg/m3 (17) | 33.0 | |
| Jan. 21, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 5.0 μg/m3 (5) | -1.0 μg/m3 (0) | 33.0 | |
| Jan. 21, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 6.0 μg/m3 (5) | 1.0 μg/m3 (4) | 32.0 | |
| Jan. 21, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 7.0 μg/m3 (6) | 3.0 μg/m3 (12) | 32.0 | |
| Jan. 21, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 8.0 μg/m3 (7) | 5.0 μg/m3 (21) | 31.0 | |
| Jan. 21, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 7.0 μg/m3 (6) | 6.0 μg/m3 (25) | 31.0 | |
| Jan. 21, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 8.0 μg/m3 (7) | 3.0 μg/m3 (12) | 29.0 | |
| Jan. 21, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | 9.0 μg/m3 (8) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 21, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | 19.0 μg/m3 (17) | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 21, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | 12.0 μg/m3 (11) | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 21, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 21, 2020, noon | 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 | |
| Jan. 21, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 21, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 21, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 21, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 21, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 21, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 μg/m3 (38) | 13.0 μg/m3 (52) | 52.0 | |
| Jan. 21, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 μg/m3 (54) | 19.0 μg/m3 (65) | 65.0 | |
| Jan. 21, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 89.0 μg/m3 (67) | 16.0 μg/m3 (59) | 67.0 | |
| Jan. 21, 2020, 3 a.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 | |
| Jan. 21, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 73.0 μg/m3 (59) | 11.0 μg/m3 (46) | 59.0 | |
| Jan. 21, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 μg/m3 (54) | 10.0 μg/m3 (42) | 54.0 | |
| Jan. 21, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 89.0 μg/m3 (67) | 9.0 μg/m3 (38) | 67.0 | |
| Jan. 20, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 78.0 μg/m3 (62) | 9.0 μg/m3 (38) | 62.0 | |
| Jan. 20, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 μg/m3 (38) | 5.0 μg/m3 (21) | 38.0 | |
| Jan. 20, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 70.0 μg/m3 (58) | 6.0 μg/m3 (25) | 58.0 | |
| Jan. 20, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 μg/m3 (41) | 4.0 μg/m3 (17) | 41.0 | |
| Jan. 20, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 μg/m3 (46) | 5.0 μg/m3 (21) | 46.0 | |
| Jan. 20, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 70.0 μg/m3 (58) | 7.0 μg/m3 (29) | 58.0 | |
| Jan. 20, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 μg/m3 (41) | 5.0 μg/m3 (21) | 41.0 | |
| Jan. 20, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 μg/m3 (50) | 6.0 μg/m3 (25) | 50.0 | |
| Jan. 20, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 μg/m3 (36) | 3.0 μg/m3 (12) | 36.0 | |
| Jan. 20, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 μg/m3 (26) | 5.0 μg/m3 (21) | 26.0 | |
| Jan. 20, 2020, 1 p.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 | |
| Jan. 20, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | 14.0 μg/m3 (13) | 3.0 μg/m3 (12) | 13.0 | |
| Jan. 20, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | 13.0 μg/m3 (12) | 3.0 μg/m3 (12) | 13.0 | |
| Jan. 20, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | 24.0 μg/m3 (22) | 2.0 μg/m3 (8) | 22.0 | |
| Jan. 20, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 3.0 μg/m3 (3) | 4.0 μg/m3 (17) | 24.0 | |
| Jan. 20, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 5.0 μg/m3 (5) | 5.0 μg/m3 (21) | 25.0 | |
| Jan. 20, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 6.0 μg/m3 (5) | 3.0 μg/m3 (12) | 26.0 | |
| Jan. 20, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 6.0 μg/m3 (5) | 3.0 μg/m3 (12) | 25.0 | |
| Jan. 20, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 14.0 μg/m3 (13) | 4.0 μg/m3 (17) | 23.0 | |
| Jan. 20, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 11.0 μg/m3 (10) | 3.0 μg/m3 (12) | 25.0 | |
| Jan. 20, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 28.0 μg/m3 (25) | 3.0 μg/m3 (12) | 25.0 | |
| Jan. 20, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 20.0 μg/m3 (18) | 2.0 μg/m3 (8) | 24.0 | |
| Jan. 20, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | 13.0 μg/m3 (12) | 2.0 μg/m3 (8) | 27.0 | |
| Jan. 20, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 20.0 μg/m3 (18) | 2.0 μg/m3 (8) | 30.0 | |
| Jan. 19, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 9.0 μg/m3 (8) | 2.0 μg/m3 (8) | 31.0 | |
| Jan. 19, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 16.0 μg/m3 (15) | 2.0 μg/m3 (8) | 32.0 | |
| Jan. 19, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 13.0 μg/m3 (12) | 0.0 μg/m3 (0) | 32.0 | |
| Jan. 19, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 12.0 μg/m3 (11) | 0.0 μg/m3 (0) | 32.0 | |
| Jan. 19, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 14.0 μg/m3 (13) | 1.0 μg/m3 (4) | 31.0 | |
| Jan. 19, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 18.0 μg/m3 (16) | 2.0 μg/m3 (8) | 30.0 | |
| Jan. 19, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 35.0 μg/m3 (32) | 3.0 μg/m3 (12) | 32.0 | |
| Jan. 19, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 17.0 μg/m3 (15) | 3.0 μg/m3 (12) | 28.0 | |
| Jan. 19, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | 7.0 μg/m3 (6) | 4.0 μg/m3 (17) | 27.0 | |
| Jan. 19, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 7.0 μg/m3 (6) | 5.0 μg/m3 (21) | 28.0 | |
| Jan. 19, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 7.0 μg/m3 (6) | 1.0 μg/m3 (4) | 29.0 | |
| Jan. 19, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 7.0 μg/m3 (6) | 1.0 μg/m3 (4) | 29.0 | |
| Jan. 19, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 8.0 μg/m3 (7) | 3.0 μg/m3 (12) | 30.0 | |
| Jan. 19, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 2.0 μg/m3 (2) | 3.0 μg/m3 (12) | 29.0 | |
| Jan. 19, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 2.0 μg/m3 (2) | 2.0 μg/m3 (8) | 29.0 | |
| Jan. 19, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 5.0 μg/m3 (5) | 1.0 μg/m3 (4) | 28.0 | |
| Jan. 19, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 5.0 μg/m3 (5) | 2.0 μg/m3 (8) | 30.0 | |
| Jan. 19, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 14.0 μg/m3 (13) | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 19, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | 27.0 μg/m3 (25) | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 19, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 8.0 μg/m3 (7) | 5.0 μg/m3 (21) | 28.0 | |
| Jan. 19, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 12.0 μg/m3 (11) | 6.0 μg/m3 (25) | 28.0 | |
| Jan. 19, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 11.0 μg/m3 (10) | 5.0 μg/m3 (21) | 29.0 | |
| Jan. 19, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | 12.0 μg/m3 (11) | 7.0 μg/m3 (29) | 32.0 | |
| Jan. 19, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 17.0 μg/m3 (15) | 6.0 μg/m3 (25) | 32.0 | |
| Jan. 18, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 25.0 μg/m3 (23) | 0.0 μg/m3 (0) | 33.0 | |
| Jan. 18, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 18.0 μg/m3 (16) | -1.0 μg/m3 (0) | 33.0 | |
| Jan. 18, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 13.0 μg/m3 (12) | 0.0 μg/m3 (0) | 33.0 | |
| Jan. 18, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | 16.0 μg/m3 (15) | 2.0 μg/m3 (8) | 32.0 | |
| Jan. 18, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | 31.0 μg/m3 (28) | 3.0 μg/m3 (12) | 32.0 | |
| Jan. 18, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 44.0 μg/m3 (40) | 2.0 μg/m3 (8) | 40.0 | |
| Jan. 18, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 23.0 μg/m3 (21) | 3.0 μg/m3 (12) | 29.0 | |
| Jan. 18, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 56.0 μg/m3 (50) | 4.0 μg/m3 (17) | 50.0 | |
| Jan. 18, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 19.0 μg/m3 (17) | 5.0 μg/m3 (21) | 24.0 | |
| Jan. 18, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | 24.0 μg/m3 (22) | 5.0 μg/m3 (21) | 22.0 | |
| Jan. 18, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | N/A | 19.0 μg/m3 (17) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 18, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 6.0 μg/m3 (5) | 1.0 μg/m3 (4) | 19.0 | |
| Jan. 18, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 6.0 μg/m3 (5) | 1.0 μg/m3 (4) | 26.0 | |
| Jan. 18, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 8.0 μg/m3 (7) | 4.0 μg/m3 (17) | 19.0 | |
| Jan. 18, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 8.0 μg/m3 (7) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 18, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | 13.0 μg/m3 (12) | 4.0 μg/m3 (17) | 22.0 | |
| Jan. 18, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | 16.0 μg/m3 (15) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 18, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | N/A | 24.0 μg/m3 (22) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 18, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | 31.0 μg/m3 (28) | 5.0 μg/m3 (21) | 28.0 | |
| Jan. 18, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 16.0 μg/m3 (15) | 4.0 μg/m3 (17) | 23.0 | |
| Jan. 18, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 18.0 μg/m3 (16) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 18, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 17.0 μg/m3 (15) | 5.0 μg/m3 (21) | 28.0 | |
| Jan. 18, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 25.0 μg/m3 (23) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 18, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | 22.0 μg/m3 (20) | 4.0 μg/m3 (17) | 32.0 | |
| Jan. 17, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 16.0 μg/m3 (15) | 1.0 μg/m3 (4) | 33.0 | |
| Jan. 17, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 19.0 μg/m3 (17) | 0.0 μg/m3 (0) | 32.0 | |
| Jan. 17, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 22.0 μg/m3 (20) | 2.0 μg/m3 (8) | 32.0 | |
| Jan. 17, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 36.0 μg/m3 (33) | 5.0 μg/m3 (21) | 33.0 | |
| Jan. 17, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | 48.0 μg/m3 (44) | 4.0 μg/m3 (17) | 44.0 | |
| Jan. 17, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 39.0 μg/m3 (35) | 5.0 μg/m3 (21) | 35.0 | |
| Jan. 17, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 41.0 μg/m3 (37) | 6.0 μg/m3 (25) | 37.0 | |
| Jan. 17, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | 48.0 μg/m3 (44) | 10.0 μg/m3 (42) | 44.0 | |
| Jan. 17, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | 44.0 μg/m3 (40) | 15.0 μg/m3 (56) | 56.0 | |
| Jan. 17, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 129.0 μg/m3 (87) | 17.0 μg/m3 (61) | 87.0 | |
| Jan. 17, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 67.0 μg/m3 (56) | 15.0 μg/m3 (56) | 56.0 | |
| Jan. 17, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | N/A | 40.0 μg/m3 (36) | 13.0 μg/m3 (52) | 52.0 | |
| Jan. 17, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | 27.0 μg/m3 (25) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 17, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 33.0 μg/m3 (30) | 6.0 μg/m3 (25) | 30.0 | |
| Jan. 17, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | 22.0 μg/m3 (20) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 17, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | 18.0 μg/m3 (16) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 17, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | 22.0 μg/m3 (20) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 17, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | 23.0 μg/m3 (21) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 17, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 18.0 μg/m3 (16) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 17, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 12.0 μg/m3 (11) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 17, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 13.0 μg/m3 (12) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 17, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 14.0 μg/m3 (13) | 5.0 μg/m3 (21) | 26.0 | |
| Jan. 17, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 17, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 14.0 μg/m3 (13) | 7.0 μg/m3 (29) | 30.0 | |
| Jan. 16, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 23.0 μg/m3 (21) | 5.0 μg/m3 (21) | 33.0 | |
| Jan. 16, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 17.0 μg/m3 (15) | 4.0 μg/m3 (17) | 35.0 | |
| Jan. 16, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 34.0 | |
| Jan. 16, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 20.0 μg/m3 (18) | 7.0 μg/m3 (29) | 32.0 | |
| Jan. 16, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 35.0 μg/m3 (32) | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 16, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | 70.0 μg/m3 (58) | 16.0 μg/m3 (59) | 59.0 | |
| Jan. 16, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | 45.0 μg/m3 (41) | 9.0 μg/m3 (38) | 41.0 | |
| Jan. 16, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | 38.0 μg/m3 (35) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 16, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | 59.0 μg/m3 (52) | 11.0 μg/m3 (46) | 52.0 | |
| Jan. 16, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | 31.0 μg/m3 (28) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 16, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | 46.0 μg/m3 (42) | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 16, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | 30.0 μg/m3 (27) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 16, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | 19.0 μg/m3 (17) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 16, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | 18.0 μg/m3 (16) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 16, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 62.0 μg/m3 (54) | 17.0 μg/m3 (61) | 61.0 | |
| Jan. 16, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 57.0 μg/m3 (51) | 20.0 μg/m3 (67) | 67.0 | |
| Jan. 16, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 107.0 μg/m3 (76) | 13.0 μg/m3 (52) | 76.0 | |
| Jan. 16, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | 44.0 μg/m3 (40) | 14.0 μg/m3 (54) | 54.0 | |
| Jan. 16, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 123.0 μg/m3 (84) | 35.0 μg/m3 (99) | 99.0 |