Phoenix (S Mtain) AZ, US: 33.4033, -112.0731
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 24, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.6 ppb (7) | 21.0 μg/m3 (19) | 10.9 μg/m3 (45) | 45.0 | |
| Jan. 24, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.7 ppb (8) | 31.0 μg/m3 (28) | 13.2 μg/m3 (53) | 53.0 | |
| Jan. 24, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.8 ppb (9) | 31.0 μg/m3 (28) | 14.1 μg/m3 (54) | 54.0 | |
| Jan. 24, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.6 ppb (7) | 30.0 μg/m3 (27) | 15.4 μg/m3 (57) | 57.0 | |
| Jan. 24, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 0.7 ppb (8) | 53.0 μg/m3 (48) | 18.2 μg/m3 (63) | 63.0 | |
| Jan. 24, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.0 ppb (11) | 61.0 μg/m3 (53) | 18.0 μg/m3 (63) | 63.0 | |
| Jan. 24, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.8 ppb (9) | 46.0 μg/m3 (42) | 14.6 μg/m3 (56) | 56.0 | |
| Jan. 24, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | 0.4 ppb (4) | 31.0 μg/m3 (28) | 10.3 μg/m3 (43) | 43.0 | |
| Jan. 23, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.4 ppb (4) | 19.0 μg/m3 (17) | 8.2 μg/m3 (34) | 34.0 | |
| Jan. 23, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.3 ppb (3) | 16.0 μg/m3 (15) | 8.8 μg/m3 (37) | 37.0 | |
| Jan. 23, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | 0.3 ppb (3) | 18.0 μg/m3 (16) | 11.4 μg/m3 (48) | 48.0 | |
| Jan. 23, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | 0.3 ppb (3) | 14.0 μg/m3 (13) | 10.2 μg/m3 (42) | 42.0 | |
| Jan. 23, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | 0.3 ppb (3) | 19.0 μg/m3 (17) | 13.5 μg/m3 (53) | 53.0 | |
| Jan. 23, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | 0.4 ppb (4) | 19.0 μg/m3 (17) | 11.8 μg/m3 (49) | 49.0 | |
| Jan. 23, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.4 ppb (4) | 24.0 μg/m3 (22) | 14.2 μg/m3 (55) | 55.0 | |
| Jan. 23, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | 0.7 ppb (8) | 41.0 μg/m3 (37) | 15.6 μg/m3 (58) | 58.0 | |
| Jan. 23, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.3 ppb (14) | 49.0 μg/m3 (45) | 17.0 μg/m3 (61) | 61.0 | |
| Jan. 23, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.6 ppb (18) | 38.0 μg/m3 (35) | 15.9 μg/m3 (58) | 58.0 | |
| Jan. 23, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.2 ppb (13) | 23.0 μg/m3 (21) | 11.9 μg/m3 (50) | 50.0 | |
| Jan. 23, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.0 ppb (11) | 20.0 μg/m3 (18) | 10.7 μg/m3 (45) | 45.0 | |
| Jan. 23, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.5 ppb (6) | 18.0 μg/m3 (16) | 12.7 μg/m3 (51) | 51.0 | |
| Jan. 23, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.4 ppb (4) | 16.0 μg/m3 (15) | 12.5 μg/m3 (51) | 51.0 | |
| Jan. 23, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.5 ppb (6) | 15.0 μg/m3 (14) | 10.9 μg/m3 (45) | 45.0 | |
| Jan. 23, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.5 ppb (6) | 15.0 μg/m3 (14) | 9.6 μg/m3 (40) | 40.0 | |
| Jan. 23, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.6 ppb (7) | 20.0 μg/m3 (18) | 10.4 μg/m3 (43) | 43.0 | |
| Jan. 23, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.0 ppb (11) | 31.0 μg/m3 (28) | 14.5 μg/m3 (55) | 55.0 | |
| Jan. 23, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.1 ppb (12) | 33.0 μg/m3 (30) | 15.5 μg/m3 (57) | 57.0 | |
| Jan. 23, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.1 ppb (12) | 44.0 μg/m3 (40) | 16.9 μg/m3 (60) | 60.0 | |
| Jan. 23, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.2 ppb (13) | 46.0 μg/m3 (42) | 18.6 μg/m3 (64) | 64.0 | |
| Jan. 23, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (11) | 36.0 μg/m3 (33) | 13.2 μg/m3 (53) | 53.0 | |
| Jan. 23, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | 0.7 ppb (8) | 16.0 μg/m3 (15) | 8.1 μg/m3 (34) | 34.0 | |
| Jan. 23, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | 0.3 ppb (3) | 9.0 μg/m3 (8) | 6.6 μg/m3 (28) | 28.0 | |
| Jan. 22, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | 0.2 ppb (2) | 9.0 μg/m3 (8) | 6.1 μg/m3 (25) | 27.0 | |
| Jan. 22, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | 0.2 ppb (2) | 17.0 μg/m3 (15) | 11.5 μg/m3 (48) | 48.0 | |
| Jan. 22, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | 0.2 ppb (2) | 15.0 μg/m3 (14) | 9.5 μg/m3 (40) | 40.0 | |
| Jan. 22, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | 0.2 ppb (2) | 16.0 μg/m3 (15) | 11.5 μg/m3 (48) | 48.0 | |
| Jan. 22, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.2 ppb (2) | 16.0 μg/m3 (15) | 10.5 μg/m3 (44) | 44.0 | |
| Jan. 22, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.3 ppb (3) | 17.0 μg/m3 (15) | 9.2 μg/m3 (38) | 38.0 | |
| Jan. 22, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | 0.3 ppb (3) | 27.0 μg/m3 (25) | 12.6 μg/m3 (51) | 51.0 | |
| Jan. 22, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.5 ppb (6) | N/A | N/A | 6.0 | |
| Jan. 22, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 1.0 ppb (11) | N/A | N/A | 11.0 | |
| Jan. 22, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 1.2 ppb (13) | 19.0 μg/m3 (17) | 10.6 μg/m3 (44) | 44.0 | |
| Jan. 22, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 7.2 μg/m3 (30) | 30.0 | |
| Jan. 22, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.5 ppb (6) | 9.0 μg/m3 (8) | 6.3 μg/m3 (26) | 26.0 | |
| Jan. 22, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | 0.3 ppb (3) | 8.0 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 22, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | 0.3 ppb (3) | 11.0 μg/m3 (10) | 8.6 μg/m3 (36) | 36.0 | |
| Jan. 22, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | 0.3 ppb (3) | 2.0 μg/m3 (2) | 2.2 μg/m3 (9) | 9.0 | |
| Jan. 22, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | 0.4 ppb (4) | 0.0 μg/m3 (0) | 0.1 μg/m3 (0) | 7.0 | |
| Jan. 22, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.4 ppb (4) | 4.0 μg/m3 (4) | 2.8 μg/m3 (12) | 12.0 | |
| Jan. 22, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | 0.4 ppb (4) | 7.0 μg/m3 (6) | 5.3 μg/m3 (22) | 22.0 | |
| Jan. 22, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | 0.4 ppb (4) | 11.0 μg/m3 (10) | 8.2 μg/m3 (34) | 34.0 | |
| Jan. 22, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | 0.3 ppb (3) | 8.0 μg/m3 (7) | 6.6 μg/m3 (28) | 28.0 | |
| Jan. 22, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | 0.3 ppb (3) | 5.0 μg/m3 (5) | 4.5 μg/m3 (19) | 21.0 | |
| Jan. 22, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | 0.3 ppb (3) | 4.0 μg/m3 (4) | 4.1 μg/m3 (17) | 19.0 | |
| Jan. 22, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | 0.3 ppb (3) | 3.0 μg/m3 (3) | 3.7 μg/m3 (15) | 20.0 | |
| Jan. 22, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.3 ppb (3) | 1.0 μg/m3 (1) | 2.1 μg/m3 (9) | 22.0 | |
| Jan. 21, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | 0.3 ppb (3) | 2.0 μg/m3 (2) | 3.1 μg/m3 (13) | 24.0 | |
| Jan. 21, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.3 ppb (3) | 7.0 μg/m3 (6) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 21, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | 0.3 ppb (3) | 10.0 μg/m3 (9) | 7.3 μg/m3 (30) | 30.0 | |
| Jan. 21, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.3 ppb (3) | 7.0 μg/m3 (6) | 5.4 μg/m3 (23) | 23.0 | |
| Jan. 21, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | 0.3 ppb (3) | 3.0 μg/m3 (3) | 2.9 μg/m3 (12) | 26.0 | |
| Jan. 21, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | 0.3 ppb (3) | 5.0 μg/m3 (5) | 4.8 μg/m3 (20) | 25.0 | |
| Jan. 21, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | 0.3 ppb (3) | 2.0 μg/m3 (2) | 2.8 μg/m3 (12) | 26.0 | |
| Jan. 21, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.3 ppb (3) | 2.0 μg/m3 (2) | 2.0 μg/m3 (8) | 23.0 | |
| Jan. 21, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | 0.5 ppb (6) | 7.0 μg/m3 (6) | 4.6 μg/m3 (19) | 19.0 | |
| Jan. 21, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | 0.4 ppb (4) | 5.0 μg/m3 (5) | 1.3 μg/m3 (5) | 8.0 | |
| Jan. 21, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.4 ppb (4) | 16.0 μg/m3 (15) | 8.1 μg/m3 (34) | 34.0 | |
| Jan. 21, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.4 ppb (4) | 22.0 μg/m3 (20) | 9.5 μg/m3 (40) | 40.0 | |
| Jan. 21, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | 0.3 ppb (3) | 19.0 μg/m3 (17) | 5.5 μg/m3 (23) | 23.0 | |
| Jan. 21, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.2 ppb (2) | 10.0 μg/m3 (9) | 1.9 μg/m3 (8) | 22.0 | |
| Jan. 21, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.2 ppb (2) | 26.0 μg/m3 (24) | 6.9 μg/m3 (29) | 29.0 | |
| Jan. 21, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | 0.3 ppb (3) | 29.0 μg/m3 (26) | 8.2 μg/m3 (34) | 34.0 | |
| Jan. 21, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.4 ppb (4) | 23.0 μg/m3 (21) | 8.2 μg/m3 (34) | 34.0 | |
| Jan. 21, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.4 ppb (4) | 20.0 μg/m3 (18) | 7.7 μg/m3 (32) | 32.0 | |
| Jan. 21, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | 0.4 ppb (4) | 24.0 μg/m3 (22) | 5.7 μg/m3 (24) | 24.0 | |
| Jan. 21, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | 0.4 ppb (4) | 32.0 μg/m3 (29) | 12.3 μg/m3 (51) | 51.0 | |
| Jan. 21, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.9 ppb (10) | 48.0 μg/m3 (44) | 15.1 μg/m3 (57) | 57.0 | |
| Jan. 21, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.9 ppb (10) | 42.0 μg/m3 (38) | 8.4 μg/m3 (35) | 38.0 | |
| Jan. 21, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.6 ppb (7) | 40.0 μg/m3 (36) | 8.5 μg/m3 (35) | 36.0 | |
| Jan. 21, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | 0.5 ppb (6) | 49.0 μg/m3 (45) | 10.7 μg/m3 (45) | 45.0 | |
| Jan. 20, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | 0.4 ppb (4) | 32.0 μg/m3 (29) | 7.1 μg/m3 (30) | 30.0 | |
| Jan. 20, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.3 ppb (3) | 24.0 μg/m3 (22) | 4.4 μg/m3 (18) | 22.0 | |
| Jan. 20, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | 0.3 ppb (3) | 20.0 μg/m3 (18) | 4.4 μg/m3 (18) | 22.0 | |
| Jan. 20, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | 0.3 ppb (3) | 18.0 μg/m3 (16) | 4.4 μg/m3 (18) | 27.0 | |
| Jan. 20, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | 0.3 ppb (3) | 14.0 μg/m3 (13) | 4.1 μg/m3 (17) | 27.0 | |
| Jan. 20, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.3 ppb (3) | 15.0 μg/m3 (14) | 3.4 μg/m3 (14) | 22.0 | |
| Jan. 20, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | 0.3 ppb (3) | 51.0 μg/m3 (46) | 6.7 μg/m3 (28) | 46.0 | |
| Jan. 20, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | 0.4 ppb (4) | 78.0 μg/m3 (62) | 6.0 μg/m3 (25) | 62.0 | |
| Jan. 20, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.3 ppb (3) | 13.0 μg/m3 (12) | 4.4 μg/m3 (18) | 18.0 | |
| Jan. 20, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | 0.4 ppb (4) | 17.0 μg/m3 (15) | 4.6 μg/m3 (19) | 19.0 | |
| Jan. 20, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.6 ppb (7) | 28.0 μg/m3 (25) | 5.3 μg/m3 (22) | 25.0 | |
| Jan. 20, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.7 ppb (8) | 19.0 μg/m3 (17) | 5.9 μg/m3 (25) | 25.0 | |
| Jan. 20, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.4 ppb (4) | 7.0 μg/m3 (6) | 3.7 μg/m3 (15) | 15.0 | |
| Jan. 20, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | 0.3 ppb (3) | 2.0 μg/m3 (2) | 1.1 μg/m3 (5) | 21.0 | |
| Jan. 20, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.2 ppb (2) | 2.0 μg/m3 (2) | 1.0 μg/m3 (4) | 23.0 | |
| Jan. 20, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.2 ppb (2) | 10.0 μg/m3 (9) | 3.5 μg/m3 (15) | 23.0 | |
| Jan. 20, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.7 ppb (8) | 34.0 μg/m3 (31) | 18.0 μg/m3 (63) | 63.0 | |
| Jan. 20, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.1 ppb (12) | 34.0 μg/m3 (31) | 18.7 μg/m3 (64) | 64.0 | |
| Jan. 20, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 1.0 ppb (11) | 50.0 μg/m3 (45) | 25.6 μg/m3 (79) | 79.0 | |
| Jan. 20, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.4 ppb (16) | 60.0 μg/m3 (52) | 27.5 μg/m3 (83) | 83.0 | |
| Jan. 20, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.6 ppb (18) | 74.0 μg/m3 (60) | 28.2 μg/m3 (84) | 84.0 | |
| Jan. 20, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.6 ppb (18) | 62.0 μg/m3 (54) | 21.8 μg/m3 (71) | 71.0 | |
| Jan. 20, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 1.2 ppb (13) | 35.0 μg/m3 (32) | 11.4 μg/m3 (48) | 48.0 | |
| Jan. 20, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | 0.4 ppb (4) | 6.0 μg/m3 (5) | 1.6 μg/m3 (7) | 21.0 | |
| Jan. 19, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | 0.2 ppb (2) | 5.0 μg/m3 (5) | 2.4 μg/m3 (10) | 32.0 | |
| Jan. 19, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | 0.2 ppb (2) | 7.0 μg/m3 (6) | 2.5 μg/m3 (10) | 34.0 | |
| Jan. 19, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | 0.2 ppb (2) | 14.0 μg/m3 (13) | 1.4 μg/m3 (6) | 34.0 | |
| Jan. 19, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | 0.2 ppb (2) | 11.0 μg/m3 (10) | 0.6 μg/m3 (2) | 33.0 | |
| Jan. 19, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | 0.2 ppb (2) | 14.0 μg/m3 (13) | 6.5 μg/m3 (27) | 31.0 | |
| Jan. 19, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.4 ppb (4) | 22.0 μg/m3 (20) | 14.7 μg/m3 (56) | 56.0 | |
| Jan. 19, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | 0.6 ppb (7) | 29.0 μg/m3 (26) | 17.4 μg/m3 (61) | 61.0 | |
| Jan. 19, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | 0.8 ppb (9) | 49.0 μg/m3 (45) | 31.5 μg/m3 (91) | 91.0 | |
| Jan. 19, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 1.4 ppb (16) | 52.0 μg/m3 (47) | 33.3 μg/m3 (95) | 95.0 | |
| Jan. 19, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (11) | 42.0 μg/m3 (38) | 29.3 μg/m3 (87) | 87.0 | |
| Jan. 19, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.9 ppb (10) | 41.0 μg/m3 (37) | 29.9 μg/m3 (88) | 88.0 | |
| Jan. 19, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.8 ppb (9) | 41.0 μg/m3 (37) | 29.2 μg/m3 (87) | 87.0 | |
| Jan. 19, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.8 ppb (9) | 44.0 μg/m3 (40) | 30.2 μg/m3 (89) | 89.0 | |
| Jan. 19, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.7 ppb (8) | 50.0 μg/m3 (45) | 31.3 μg/m3 (91) | 91.0 | |
| Jan. 19, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.2 ppb (13) | 63.0 μg/m3 (54) | 43.7 μg/m3 (120) | 120.0 | |
| Jan. 19, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.2 ppb (13) | 73.0 μg/m3 (59) | 53.1 μg/m3 (144) | 144.0 | |
| Jan. 19, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 1.3 ppb (14) | 72.0 μg/m3 (58) | 44.0 μg/m3 (121) | 121.0 | |
| Jan. 19, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.3 ppb (14) | 75.0 μg/m3 (60) | 47.6 μg/m3 (130) | 130.0 | |
| Jan. 19, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 1.2 ppb (13) | 92.0 μg/m3 (68) | 62.6 μg/m3 (154) | 154.0 | |
| Jan. 19, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 1.5 ppb (17) | 89.0 μg/m3 (67) | 40.0 μg/m3 (111) | 111.0 | |
| Jan. 19, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 1.1 ppb (12) | 56.0 μg/m3 (50) | 26.8 μg/m3 (81) | 81.0 | |
| Jan. 19, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | 0.7 ppb (8) | 42.0 μg/m3 (38) | 17.2 μg/m3 (61) | 61.0 | |
| Jan. 19, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | 0.5 ppb (6) | 34.0 μg/m3 (31) | 13.8 μg/m3 (54) | 54.0 | |
| Jan. 19, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | 0.4 ppb (4) | 25.0 μg/m3 (23) | 9.6 μg/m3 (40) | 40.0 | |
| Jan. 18, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | 0.4 ppb (4) | 17.0 μg/m3 (15) | 7.5 μg/m3 (31) | 32.0 | |
| Jan. 18, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | 0.3 ppb (3) | 17.0 μg/m3 (15) | 10.7 μg/m3 (45) | 45.0 | |
| Jan. 18, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | 0.4 ppb (4) | 12.0 μg/m3 (11) | 6.5 μg/m3 (27) | 29.0 | |
| Jan. 18, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | 0.3 ppb (3) | 11.0 μg/m3 (10) | 5.8 μg/m3 (24) | 28.0 | |
| Jan. 18, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.3 ppb (3) | 15.0 μg/m3 (14) | 7.8 μg/m3 (32) | 32.0 | |
| Jan. 18, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | 0.3 ppb (3) | 15.0 μg/m3 (14) | 9.8 μg/m3 (41) | 41.0 | |
| Jan. 18, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | 0.4 ppb (4) | 14.0 μg/m3 (13) | 7.9 μg/m3 (33) | 33.0 | |
| Jan. 18, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | 0.5 ppb (6) | 33.0 μg/m3 (30) | 18.0 μg/m3 (63) | 63.0 | |
| Jan. 18, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 1.1 ppb (12) | 43.0 μg/m3 (39) | 26.0 μg/m3 (80) | 80.0 | |
| Jan. 18, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.0 ppb (11) | 39.0 μg/m3 (35) | 26.3 μg/m3 (80) | 80.0 | |
| Jan. 18, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.9 ppb (10) | 36.0 μg/m3 (33) | 24.6 μg/m3 (77) | 77.0 | |
| Jan. 18, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.8 ppb (9) | 31.0 μg/m3 (28) | 21.4 μg/m3 (70) | 70.0 | |
| Jan. 18, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.6 ppb (7) | 29.0 μg/m3 (26) | 21.1 μg/m3 (69) | 69.0 | |
| Jan. 18, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.6 ppb (7) | 31.0 μg/m3 (28) | 22.3 μg/m3 (72) | 72.0 | |
| Jan. 18, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.6 ppb (7) | 33.0 μg/m3 (30) | 25.0 μg/m3 (78) | 78.0 | |
| Jan. 18, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 0.7 ppb (8) | 39.0 μg/m3 (35) | 25.3 μg/m3 (78) | 78.0 | |
| Jan. 18, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 0.8 ppb (9) | 41.0 μg/m3 (37) | 20.3 μg/m3 (68) | 68.0 | |
| Jan. 18, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.2 ppb (13) | 59.0 μg/m3 (52) | 33.2 μg/m3 (95) | 95.0 | |
| Jan. 18, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.4 ppb (16) | 58.0 μg/m3 (52) | 30.0 μg/m3 (88) | 88.0 | |
| Jan. 18, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 1.2 ppb (13) | 64.0 μg/m3 (54) | 23.1 μg/m3 (74) | 74.0 | |
| Jan. 18, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.1 ppb (12) | 55.0 μg/m3 (50) | 19.8 μg/m3 (67) | 67.0 | |
| Jan. 18, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | 1.0 ppb (11) | 52.0 μg/m3 (47) | 11.6 μg/m3 (48) | 48.0 | |
| Jan. 18, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.8 ppb (9) | 37.0 μg/m3 (34) | 9.4 μg/m3 (39) | 39.0 | |
| Jan. 18, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | 0.4 ppb (4) | 15.0 μg/m3 (14) | 6.1 μg/m3 (25) | 26.0 | |
| Jan. 17, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | 0.2 ppb (2) | 15.0 μg/m3 (14) | 5.1 μg/m3 (21) | 31.0 | |
| Jan. 17, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | 0.2 ppb (2) | 17.0 μg/m3 (15) | 4.7 μg/m3 (20) | 31.0 | |
| Jan. 17, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | 0.2 ppb (2) | 13.0 μg/m3 (12) | 4.3 μg/m3 (18) | 31.0 | |
| Jan. 17, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | 0.2 ppb (2) | 16.0 μg/m3 (15) | 5.1 μg/m3 (21) | 28.0 | |
| Jan. 17, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | 0.3 ppb (3) | 29.0 μg/m3 (26) | 9.7 μg/m3 (40) | 40.0 | |
| Jan. 17, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | 0.3 ppb (3) | 26.0 μg/m3 (24) | 11.9 μg/m3 (50) | 50.0 | |
| Jan. 17, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | 0.5 ppb (6) | 31.0 μg/m3 (28) | 15.8 μg/m3 (58) | 58.0 | |
| Jan. 17, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | 0.6 ppb (7) | 49.0 μg/m3 (45) | 19.0 μg/m3 (65) | 65.0 | |
| Jan. 17, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | 1.0 ppb (11) | 64.0 μg/m3 (54) | 17.1 μg/m3 (61) | 61.0 | |
| Jan. 17, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 1.3 ppb (14) | 33.0 μg/m3 (30) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 17, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.9 ppb (10) | 22.0 μg/m3 (20) | 6.9 μg/m3 (29) | 29.0 | |
| Jan. 17, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 0.7 ppb (8) | 19.0 μg/m3 (17) | 7.2 μg/m3 (30) | 30.0 | |
| Jan. 17, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | 0.4 ppb (4) | 5.0 μg/m3 (5) | 3.6 μg/m3 (15) | 15.0 | |
| Jan. 17, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | 0.2 ppb (2) | 5.0 μg/m3 (5) | 4.8 μg/m3 (20) | 20.0 | |
| Jan. 17, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | 0.3 ppb (3) | 4.0 μg/m3 (4) | 5.1 μg/m3 (21) | 21.0 | |
| Jan. 17, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (15) | 0.3 ppb (3) | 5.0 μg/m3 (5) | 4.7 μg/m3 (20) | 20.0 |