Tacoma (S End) WA, US: 47.22634, -122.46256
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 10, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| April 10, 2021, 9 a.m. | 4.4 ppb (5) | 1.7 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| April 10, 2021, 8 a.m. | 3.9 ppb (4) | 1.3 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 4.0 | |
| April 10, 2021, 7 a.m. | 4.3 ppb (5) | 1.5 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 5.0 | |
| April 10, 2021, 6 a.m. | 6.7 ppb (7) | 2.4 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| April 10, 2021, 5 a.m. | 10.1 ppb (10) | 2.9 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 10, 2021, 4 a.m. | 16.3 ppb (16) | 4.1 ppb (4) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 10, 2021, 3 a.m. | 17.8 ppb (17) | 5.8 ppb (6) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 10, 2021, 2 a.m. | 17.0 ppb (17) | 6.5 ppb (7) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| April 10, 2021, 1 a.m. | 17.8 ppb (17) | 7.6 ppb (8) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| April 10, 2021, midnight | 20.2 ppb (20) | 9.4 ppb (9) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 20.0 | |
| April 9, 2021, 11 p.m. | 23.8 ppb (23) | 12.8 ppb (13) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 23.0 | |
| April 9, 2021, 10 p.m. | 24.3 ppb (23) | 13.3 ppb (13) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 23.0 | |
| April 9, 2021, 9 p.m. | 25.8 ppb (25) | 14.1 ppb (14) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 25.0 | |
| April 9, 2021, 8 p.m. | 23.3 ppb (22) | 12.3 ppb (12) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 22.0 | |
| April 9, 2021, 7 p.m. | 23.6 ppb (23) | 13.1 ppb (13) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 23.0 | |
| April 9, 2021, 6 p.m. | 19.6 ppb (19) | 9.7 ppb (10) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 19.0 | |
| April 9, 2021, 5 p.m. | 22.5 ppb (22) | 11.7 ppb (12) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 22.0 | |
| April 9, 2021, 4 p.m. | 29.8 ppb (29) | 15.6 ppb (15) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 29.0 | |
| April 9, 2021, 3 p.m. | 42.0 ppb (40) | 23.3 ppb (22) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 40.0 | |
| April 9, 2021, 2 p.m. | 60.0 ppb (58) | 36.0 ppb (34) | N/A | 24.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 58.0 | |
| April 9, 2021, 1 p.m. | 52.4 ppb (50) | 28.9 ppb (28) | N/A | 24.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 50.0 | |
| April 9, 2021, noon | 28.2 ppb (27) | 8.8 ppb (9) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 27.0 | |
| April 9, 2021, 11 a.m. | 38.7 ppb (37) | 16.9 ppb (16) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 37.0 | |
| April 9, 2021, 10 a.m. | 9.4 ppb (9) | 1.4 ppb (2) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 9, 2021, 9 a.m. | 7.9 ppb (8) | 0.3 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 9, 2021, 8 a.m. | 10.8 ppb (11) | 1.0 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 9, 2021, 7 a.m. | 9.2 ppb (9) | 0.6 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 9.0 | |
| April 9, 2021, 6 a.m. | 17.0 ppb (17) | 3.8 ppb (4) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 17.0 | |
| April 9, 2021, 5 a.m. | 15.0 ppb (15) | 4.8 ppb (5) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 15.0 | |
| April 9, 2021, 4 a.m. | 13.8 ppb (14) | 6.0 ppb (6) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 14.0 | |
| April 9, 2021, 3 a.m. | 15.9 ppb (15) | 8.1 ppb (8) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 15.0 | |
| April 9, 2021, 2 a.m. | 21.6 ppb (21) | 10.8 ppb (11) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 9, 2021, 1 a.m. | 23.0 ppb (22) | 12.0 ppb (12) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 22.0 | |
| April 9, 2021, midnight | 23.4 ppb (23) | 13.0 ppb (13) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 23.0 | |
| April 8, 2021, 11 p.m. | 25.5 ppb (25) | 13.5 ppb (13) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 25.0 | |
| April 8, 2021, 10 p.m. | 22.6 ppb (22) | 12.2 ppb (12) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 22.0 | |
| April 8, 2021, 9 p.m. | 20.8 ppb (20) | 11.3 ppb (11) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 20.0 | |
| April 8, 2021, 8 p.m. | 19.4 ppb (19) | 10.4 ppb (10) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 19.0 | |
| April 8, 2021, 7 p.m. | 25.4 ppb (24) | 14.6 ppb (14) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 8, 2021, 6 p.m. | 26.2 ppb (25) | 14.6 ppb (14) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 25.0 | |
| April 8, 2021, 5 p.m. | 24.9 ppb (24) | 13.9 ppb (14) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 24.0 | |
| April 8, 2021, 4 p.m. | 25.7 ppb (25) | 14.2 ppb (14) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 25.0 | |
| April 8, 2021, 3 p.m. | 33.1 ppb (32) | 20.0 ppb (19) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 32.0 | |
| April 8, 2021, 2 p.m. | 55.5 ppb (53) | 28.6 ppb (27) | N/A | 27.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 53.0 | |
| April 8, 2021, 1 p.m. | 41.0 ppb (39) | 19.2 ppb (19) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 39.0 | |
| April 8, 2021, noon | 27.5 ppb (26) | 11.4 ppb (11) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 26.0 | |
| April 8, 2021, 11 a.m. | 13.6 ppb (13) | 6.0 ppb (6) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 13.0 | |
| April 8, 2021, 10 a.m. | 6.2 ppb (6) | 2.1 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| April 8, 2021, 9 a.m. | 3.7 ppb (4) | 1.9 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| April 8, 2021, 8 a.m. | 4.1 ppb (4) | 1.6 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| April 8, 2021, 7 a.m. | 4.9 ppb (5) | 1.8 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 | |
| April 8, 2021, 6 a.m. | 11.4 ppb (11) | 3.5 ppb (4) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 11.0 | |
| April 8, 2021, 5 a.m. | 13.5 ppb (13) | 3.9 ppb (4) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 8, 2021, 4 a.m. | 11.3 ppb (11) | 4.0 ppb (4) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 8, 2021, 3 a.m. | 14.2 ppb (14) | 6.0 ppb (6) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 14.0 | |
| April 8, 2021, 2 a.m. | 15.3 ppb (15) | 6.1 ppb (6) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 15.0 | |
| April 8, 2021, 1 a.m. | 18.2 ppb (18) | 7.7 ppb (8) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 18.0 | |
| April 8, 2021, midnight | 20.5 ppb (20) | 9.4 ppb (9) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 20.0 | |
| April 7, 2021, 11 p.m. | 23.8 ppb (23) | 11.7 ppb (12) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 23.0 | |
| April 7, 2021, 10 p.m. | 26.6 ppb (26) | 13.6 ppb (13) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 26.0 | |
| April 7, 2021, 9 p.m. | 22.4 ppb (22) | 11.7 ppb (12) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 22.0 | |
| April 7, 2021, 8 p.m. | 20.8 ppb (20) | 10.9 ppb (11) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 20.0 | |
| April 7, 2021, 7 p.m. | 24.2 ppb (23) | 12.7 ppb (12) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 23.0 | |
| April 7, 2021, 6 p.m. | 25.9 ppb (25) | 13.7 ppb (13) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 25.0 | |
| April 7, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 7, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 7, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 7, 2021, 2 p.m. | 37.4 ppb (36) | 17.5 ppb (17) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 36.0 | |
| April 7, 2021, 1 p.m. | 30.9 ppb (30) | 13.9 ppb (14) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 30.0 | |
| April 7, 2021, noon | 24.7 ppb (24) | 11.2 ppb (11) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 24.0 | |
| April 7, 2021, 11 a.m. | 18.9 ppb (18) | 8.3 ppb (8) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 18.0 | |
| April 7, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 7, 2021, 9 a.m. | 10.3 ppb (10) | 3.6 ppb (4) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 7, 2021, 8 a.m. | 11.8 ppb (12) | 4.2 ppb (4) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| April 7, 2021, 7 a.m. | 12.2 ppb (12) | 3.4 ppb (4) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| April 7, 2021, 6 a.m. | 17.0 ppb (17) | 6.2 ppb (6) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 7, 2021, 5 a.m. | 23.0 ppb (22) | 9.1 ppb (9) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 22.0 | |
| April 7, 2021, 4 a.m. | 24.1 ppb (23) | 10.7 ppb (11) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 7, 2021, 3 a.m. | 30.2 ppb (29) | 5.0 ppb (5) | N/A | 25.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| April 7, 2021, 2 a.m. | 23.2 ppb (22) | 5.2 ppb (5) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 7, 2021, 1 a.m. | 18.7 ppb (18) | 6.8 ppb (7) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 7, 2021, midnight | 28.2 ppb (27) | 12.3 ppb (12) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| April 6, 2021, 11 p.m. | 27.1 ppb (26) | 13.4 ppb (13) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 26.0 | |
| April 6, 2021, 10 p.m. | 23.0 ppb (22) | 11.1 ppb (11) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| April 6, 2021, 9 p.m. | 18.2 ppb (18) | 8.5 ppb (9) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 6, 2021, 8 p.m. | 21.7 ppb (21) | 11.0 ppb (11) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 6, 2021, 7 p.m. | 24.7 ppb (24) | 12.7 ppb (12) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| April 6, 2021, 6 p.m. | 23.1 ppb (22) | 11.6 ppb (11) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 22.0 | |
| April 6, 2021, 5 p.m. | 28.8 ppb (28) | 15.7 ppb (15) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| April 6, 2021, 4 p.m. | 47.8 ppb (46) | 29.1 ppb (28) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 46.0 | |
| April 6, 2021, 3 p.m. | 73.3 ppb (72) | 50.3 ppb (48) | N/A | 23.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (46) | 72.0 | |
| April 6, 2021, 2 p.m. | 93.0 ppb (93) | 65.2 ppb (63) | N/A | 28.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (55) | 93.0 | |
| April 6, 2021, 1 p.m. | 27.4 ppb (26) | 10.3 ppb (10) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 26.0 | |
| April 6, 2021, noon | 21.5 ppb (21) | 3.5 ppb (4) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 6, 2021, 11 a.m. | 43.6 ppb (42) | 19.2 ppb (19) | N/A | 24.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 42.0 | |
| April 6, 2021, 10 a.m. | 27.7 ppb (27) | 8.2 ppb (8) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| April 6, 2021, 9 a.m. | 13.9 ppb (14) | 0.7 ppb (1) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| April 6, 2021, 8 a.m. | 9.1 ppb (9) | 2.3 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 6, 2021, 7 a.m. | 10.6 ppb (10) | 3.4 ppb (4) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 6, 2021, 6 a.m. | 15.3 ppb (15) | 6.7 ppb (7) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| April 6, 2021, 5 a.m. | 17.0 ppb (17) | 7.3 ppb (7) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| April 6, 2021, 4 a.m. | 23.1 ppb (22) | 11.2 ppb (11) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| April 6, 2021, 3 a.m. | 16.6 ppb (16) | 3.9 ppb (4) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 6, 2021, 2 a.m. | 15.6 ppb (15) | 0.8 ppb (1) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 6, 2021, 1 a.m. | 16.2 ppb (16) | 3.8 ppb (4) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 16.0 | |
| April 6, 2021, midnight | 21.8 ppb (21) | 9.9 ppb (10) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 21.0 | |
| April 5, 2021, 11 p.m. | 20.3 ppb (20) | 10.0 ppb (10) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 20.0 | |
| April 5, 2021, 10 p.m. | 23.0 ppb (22) | 12.0 ppb (12) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 22.0 | |
| April 5, 2021, 9 p.m. | 24.0 ppb (23) | 13.1 ppb (13) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 5, 2021, 8 p.m. | 22.5 ppb (22) | 11.9 ppb (12) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 5, 2021, 7 p.m. | 18.7 ppb (18) | 9.6 ppb (10) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 18.0 | |
| April 5, 2021, 6 p.m. | 19.9 ppb (19) | 10.4 ppb (10) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 19.0 | |
| April 5, 2021, 5 p.m. | 36.0 ppb (34) | 23.8 ppb (23) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| April 5, 2021, 4 p.m. | 49.8 ppb (47) | 35.6 ppb (34) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 47.0 | |
| April 5, 2021, 3 p.m. | 63.1 ppb (61) | 44.6 ppb (43) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (53) | 61.0 | |
| April 5, 2021, 2 p.m. | 64.8 ppb (63) | 45.3 ppb (43) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 63.0 | |
| April 5, 2021, 1 p.m. | 64.3 ppb (62) | 44.4 ppb (42) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 62.0 | |
| April 5, 2021, noon | 75.0 ppb (74) | 52.5 ppb (50) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (58) | 74.0 | |
| April 5, 2021, 11 a.m. | 60.9 ppb (59) | 37.5 ppb (36) | N/A | 23.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 59.0 | |
| April 5, 2021, 10 a.m. | 42.8 ppb (41) | 18.4 ppb (18) | N/A | 24.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 41.0 | |
| April 5, 2021, 9 a.m. | 35.0 ppb (34) | 10.8 ppb (11) | N/A | 24.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| April 5, 2021, 8 a.m. | 25.6 ppb (25) | 6.0 ppb (6) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 25.0 | |
| April 5, 2021, 7 a.m. | 21.3 ppb (21) | 6.8 ppb (7) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 5, 2021, 6 a.m. | 21.8 ppb (21) | 8.0 ppb (8) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| April 5, 2021, 5 a.m. | 25.0 ppb (24) | 9.5 ppb (9) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 24.0 | |
| April 5, 2021, 4 a.m. | 22.7 ppb (22) | 6.2 ppb (6) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 22.0 | |
| April 5, 2021, 3 a.m. | 24.9 ppb (24) | 7.1 ppb (7) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 24.0 | |
| April 5, 2021, 2 a.m. | 19.1 ppb (19) | 7.0 ppb (7) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 19.0 | |
| April 5, 2021, 1 a.m. | 15.1 ppb (15) | 5.7 ppb (6) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 15.0 | |
| April 5, 2021, midnight | 11.9 ppb (12) | 5.8 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 4, 2021, 11 p.m. | 12.0 ppb (12) | 5.8 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 4, 2021, 10 p.m. | 13.3 ppb (13) | 6.8 ppb (7) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| April 4, 2021, 9 p.m. | 10.9 ppb (11) | 4.9 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 11.0 | |
| April 4, 2021, 8 p.m. | 9.0 ppb (9) | 3.8 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 9.0 | |
| April 4, 2021, 7 p.m. | 11.9 ppb (12) | 5.7 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 12.0 | |
| April 4, 2021, 6 p.m. | 11.8 ppb (12) | 6.3 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 12.0 | |
| April 4, 2021, 5 p.m. | 14.0 ppb (14) | 7.1 ppb (7) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 14.0 | |
| April 4, 2021, 4 p.m. | 10.8 ppb (11) | 2.7 ppb (3) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 11.0 | |
| April 4, 2021, 3 p.m. | 5.9 ppb (6) | 0.9 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 6.0 | |
| April 4, 2021, 2 p.m. | 6.8 ppb (7) | 0.7 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 4, 2021, 1 p.m. | 5.9 ppb (6) | 0.4 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 4, 2021, noon | 4.5 ppb (5) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| April 4, 2021, 11 a.m. | 6.3 ppb (6) | 0.2 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 4, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| April 4, 2021, 9 a.m. | 4.9 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| April 4, 2021, 8 a.m. | 8.4 ppb (8) | 1.7 ppb (2) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| April 4, 2021, 7 a.m. | 12.6 ppb (12) | 3.3 ppb (4) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 4, 2021, 6 a.m. | 12.4 ppb (12) | 4.9 ppb (5) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| April 4, 2021, 5 a.m. | 17.1 ppb (17) | 6.8 ppb (7) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 4, 2021, 4 a.m. | 12.8 ppb (13) | 5.4 ppb (6) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 4, 2021, 3 a.m. | 17.9 ppb (17) | 9.0 ppb (9) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 4, 2021, 2 a.m. | 16.9 ppb (16) | 8.5 ppb (9) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 16.0 | |
| April 4, 2021, 1 a.m. | 18.2 ppb (18) | 9.6 ppb (10) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 18.0 | |
| April 4, 2021, midnight | 16.5 ppb (16) | 9.1 ppb (9) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 16.0 | |
| April 3, 2021, 11 p.m. | 15.8 ppb (15) | 9.1 ppb (9) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 15.0 | |
| April 3, 2021, 10 p.m. | 18.5 ppb (18) | 10.3 ppb (10) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 18.0 | |
| April 3, 2021, 9 p.m. | 21.7 ppb (21) | 12.1 ppb (12) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 21.0 | |
| April 3, 2021, 8 p.m. | 15.9 ppb (15) | 8.2 ppb (8) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 15.0 | |
| April 3, 2021, 7 p.m. | 16.5 ppb (16) | 8.2 ppb (8) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 16.0 | |
| April 3, 2021, 6 p.m. | 11.1 ppb (11) | 4.6 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 3, 2021, 5 p.m. | 22.7 ppb (22) | 12.1 ppb (12) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| April 3, 2021, 4 p.m. | 26.2 ppb (25) | 14.4 ppb (14) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| April 3, 2021, 3 p.m. | 39.4 ppb (38) | 25.6 ppb (25) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| April 3, 2021, 2 p.m. | 41.8 ppb (40) | 25.3 ppb (24) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| April 3, 2021, 1 p.m. | 36.7 ppb (35) | 17.8 ppb (17) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (70) | 70.0 | |
| April 3, 2021, noon | 47.2 ppb (45) | 21.7 ppb (21) | N/A | 26.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (70) | 70.0 | |
| April 3, 2021, 11 a.m. | 55.0 ppb (53) | 28.9 ppb (28) | N/A | 26.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (68) | 68.0 |