Anaheim (Seast Anaheim) CA, US: 33.819305, -117.918759
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 22, 2021, 10 a.m. | 19.0 ppb (18) | 6.7 ppb (7) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | N/A | 18.0 | |
| April 22, 2021, 9 a.m. | 13.3 ppb (13) | 5.7 ppb (6) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.36 ppb (5) | N/A | N/A | 13.0 | |
| April 22, 2021, 8 a.m. | 16.1 ppb (16) | 5.6 ppb (6) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.37 ppb (5) | N/A | N/A | 16.0 | |
| April 22, 2021, 7 a.m. | 16.2 ppb (16) | 6.8 ppb (7) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 16.0 | |
| April 22, 2021, 6 a.m. | 24.1 ppb (23) | 10.4 ppb (10) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.46 ppb (6) | N/A | N/A | 23.0 | |
| April 22, 2021, 5 a.m. | 32.9 ppb (32) | 17.0 ppb (17) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | N/A | 32.0 | |
| April 22, 2021, 4 a.m. | 34.1 ppb (33) | 16.5 ppb (16) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | N/A | 33.0 | |
| April 22, 2021, 3 a.m. | 32.5 ppb (31) | 15.4 ppb (15) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 31.0 | |
| April 22, 2021, 2 a.m. | 31.3 ppb (30) | 14.2 ppb (14) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | N/A | 30.0 | |
| April 22, 2021, 1 a.m. | 28.9 ppb (28) | 14.7 ppb (14) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | N/A | 28.0 | |
| April 22, 2021, midnight | 34.7 ppb (33) | 19.1 ppb (19) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.75 ppb (10) | N/A | N/A | 33.0 | |
| April 21, 2021, 11 p.m. | 33.4 ppb (32) | 19.5 ppb (19) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 32.0 | |
| April 21, 2021, 10 p.m. | 28.5 ppb (27) | 15.2 ppb (15) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 27.0 | |
| April 21, 2021, 9 p.m. | 22.2 ppb (21) | 11.3 ppb (11) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | N/A | 21.0 | |
| April 21, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| April 21, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| April 21, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| April 21, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| April 21, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| April 21, 2021, 3 p.m. | 44.3 ppb (42) | 24.8 ppb (24) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.71 ppb (8) | N/A | N/A | 42.0 | |
| April 21, 2021, 2 p.m. | 45.9 ppb (44) | 26.2 ppb (25) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.82 ppb (10) | N/A | N/A | 44.0 | |
| April 21, 2021, 1 p.m. | 38.5 ppb (37) | 18.6 ppb (18) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 37.0 | |
| April 21, 2021, noon | 17.6 ppb (17) | 6.2 ppb (6) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.45 ppb (6) | N/A | N/A | 17.0 | |
| April 21, 2021, 11 a.m. | 5.9 ppb (6) | 1.4 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 6.0 | |
| April 21, 2021, 10 a.m. | 7.2 ppb (7) | 1.9 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.36 ppb (5) | N/A | N/A | 7.0 | |
| April 21, 2021, 9 a.m. | 4.9 ppb (5) | 1.4 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 5.0 | |
| April 21, 2021, 8 a.m. | 6.9 ppb (7) | 2.0 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.36 ppb (5) | N/A | N/A | 7.0 | |
| April 21, 2021, 7 a.m. | 9.4 ppb (9) | 2.9 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.4 ppb (5) | N/A | N/A | 9.0 | |
| April 21, 2021, 6 a.m. | 22.3 ppb (22) | 10.8 ppb (11) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | N/A | 22.0 | |
| April 21, 2021, 5 a.m. | 21.3 ppb (21) | 9.2 ppb (9) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.47 ppb (6) | N/A | N/A | 21.0 | |
| April 21, 2021, 4 a.m. | 21.7 ppb (21) | 9.9 ppb (10) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | N/A | 21.0 | |
| April 21, 2021, 3 a.m. | 21.0 ppb (20) | 9.9 ppb (10) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | N/A | 20.0 | |
| April 21, 2021, 2 a.m. | 22.3 ppb (22) | 11.5 ppb (11) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.56 ppb (7) | N/A | N/A | 22.0 | |
| April 21, 2021, 1 a.m. | 25.6 ppb (25) | 14.4 ppb (14) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | N/A | 25.0 | |
| April 21, 2021, midnight | 25.6 ppb (25) | 13.5 ppb (13) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | N/A | 25.0 | |
| April 20, 2021, 11 p.m. | 29.8 ppb (29) | 17.4 ppb (17) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 29.0 | |
| April 20, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| April 20, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| April 20, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.55 ppb (7) | N/A | N/A | 7.0 | |
| April 20, 2021, 7 p.m. | 24.5 ppb (24) | 13.1 ppb (13) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | N/A | 24.0 | |
| April 20, 2021, 6 p.m. | 32.4 ppb (31) | 15.6 ppb (15) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | N/A | 31.0 | |
| April 20, 2021, 5 p.m. | 27.9 ppb (27) | 12.9 ppb (13) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | N/A | 27.0 | |
| April 20, 2021, 4 p.m. | 22.9 ppb (22) | 11.2 ppb (11) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | N/A | 22.0 | |
| April 20, 2021, 3 p.m. | 23.8 ppb (23) | 10.8 ppb (11) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | N/A | 23.0 | |
| April 20, 2021, 2 p.m. | 38.7 ppb (37) | 18.5 ppb (18) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.71 ppb (8) | N/A | N/A | 37.0 | |
| April 20, 2021, 1 p.m. | 30.7 ppb (29) | 14.7 ppb (14) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 29.0 | |
| April 20, 2021, noon | 23.9 ppb (23) | 9.6 ppb (10) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.57 ppb (7) | N/A | N/A | 23.0 | |
| April 20, 2021, 11 a.m. | 13.6 ppb (13) | 4.5 ppb (5) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.46 ppb (6) | N/A | N/A | 13.0 | |
| April 20, 2021, 10 a.m. | 11.0 ppb (11) | 3.1 ppb (3) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 11.0 | |
| April 20, 2021, 9 a.m. | 8.8 ppb (9) | 2.3 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.47 ppb (6) | N/A | N/A | 9.0 | |
| April 20, 2021, 8 a.m. | 12.4 ppb (12) | 3.6 ppb (4) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 12.0 | |
| April 20, 2021, 7 a.m. | 24.7 ppb (24) | 8.3 ppb (8) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | N/A | 24.0 | |
| April 20, 2021, 6 a.m. | 21.9 ppb (21) | 6.5 ppb (7) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.56 ppb (7) | N/A | N/A | 21.0 | |
| April 20, 2021, 5 a.m. | 30.2 ppb (29) | 10.5 ppb (10) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.65 ppb (8) | N/A | N/A | 29.0 | |
| April 20, 2021, 4 a.m. | 24.6 ppb (24) | 8.0 ppb (8) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.68 ppb (8) | N/A | N/A | 24.0 | |
| April 20, 2021, 3 a.m. | 26.5 ppb (25) | 8.2 ppb (8) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.68 ppb (8) | N/A | N/A | 25.0 | |
| April 20, 2021, 2 a.m. | 27.6 ppb (27) | 9.4 ppb (9) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | N/A | 27.0 | |
| April 20, 2021, 1 a.m. | 31.1 ppb (30) | 11.7 ppb (12) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.81 ppb (10) | N/A | N/A | 30.0 | |
| April 20, 2021, midnight | 31.0 ppb (30) | 12.1 ppb (12) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.74 ppb (8) | N/A | N/A | 30.0 | |
| April 19, 2021, 11 p.m. | 31.6 ppb (30) | 13.6 ppb (13) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.72 ppb (8) | N/A | N/A | 30.0 | |
| April 19, 2021, 10 p.m. | 31.8 ppb (30) | 15.7 ppb (15) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | N/A | 30.0 | |
| April 19, 2021, 9 p.m. | 28.4 ppb (27) | 11.1 ppb (11) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | N/A | 27.0 | |
| April 19, 2021, 8 p.m. | 27.5 ppb (26) | 11.1 ppb (11) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 26.0 | |
| April 19, 2021, 7 p.m. | 35.1 ppb (34) | 15.6 ppb (15) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.66 ppb (8) | N/A | N/A | 34.0 | |
| April 19, 2021, 6 p.m. | 36.8 ppb (35) | 15.2 ppb (15) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | N/A | 35.0 | |
| April 19, 2021, 5 p.m. | 46.5 ppb (44) | 19.9 ppb (19) | N/A | 27.0 ppb (26) | N/A | N/A | N/A | 0.85 ppb (10) | N/A | N/A | 44.0 | |
| April 19, 2021, 4 p.m. | 54.4 ppb (52) | 25.2 ppb (24) | N/A | 29.0 ppb (28) | N/A | N/A | N/A | 0.86 ppb (11) | N/A | N/A | 52.0 | |
| April 19, 2021, 3 p.m. | 89.2 ppb (89) | 50.6 ppb (48) | N/A | 39.0 ppb (37) | N/A | N/A | N/A | 1.11 ppb (13) | N/A | N/A | 89.0 | |
| April 19, 2021, 2 p.m. | 99.5 ppb (100) | 62.6 ppb (61) | N/A | 37.0 ppb (35) | N/A | N/A | N/A | 1.32 ppb (15) | N/A | N/A | 100.0 | |
| April 19, 2021, 1 p.m. | 81.6 ppb (81) | 50.6 ppb (48) | N/A | 31.0 ppb (30) | N/A | N/A | N/A | 1.07 ppb (13) | N/A | N/A | 81.0 | |
| April 19, 2021, noon | 48.0 ppb (46) | 20.6 ppb (20) | N/A | 27.0 ppb (26) | N/A | N/A | N/A | 0.84 ppb (10) | N/A | N/A | 46.0 | |
| April 19, 2021, 11 a.m. | 24.2 ppb (23) | 6.2 ppb (6) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 23.0 | |
| April 19, 2021, 10 a.m. | 25.5 ppb (25) | 4.5 ppb (5) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | N/A | 25.0 | |
| April 19, 2021, 9 a.m. | 32.9 ppb (32) | 5.6 ppb (6) | N/A | 27.0 ppb (26) | N/A | N/A | N/A | 0.88 ppb (11) | N/A | N/A | 32.0 | |
| April 19, 2021, 8 a.m. | 45.9 ppb (44) | 15.5 ppb (15) | N/A | 30.0 ppb (29) | N/A | N/A | N/A | 1.0 ppb (12) | N/A | N/A | 44.0 | |
| April 19, 2021, 7 a.m. | 32.3 ppb (31) | 5.2 ppb (5) | N/A | 27.0 ppb (26) | N/A | N/A | N/A | 0.85 ppb (10) | N/A | N/A | 31.0 | |
| April 19, 2021, 6 a.m. | 31.3 ppb (30) | 4.5 ppb (5) | N/A | 27.0 ppb (26) | N/A | N/A | N/A | 0.92 ppb (11) | N/A | N/A | 30.0 | |
| April 19, 2021, 5 a.m. | 37.3 ppb (36) | 10.1 ppb (10) | N/A | 27.0 ppb (26) | N/A | N/A | N/A | 1.0 ppb (12) | N/A | N/A | 36.0 | |
| April 19, 2021, 4 a.m. | 34.9 ppb (33) | 10.2 ppb (10) | N/A | 25.0 ppb (24) | N/A | N/A | N/A | 0.91 ppb (11) | N/A | N/A | 33.0 | |
| April 19, 2021, 3 a.m. | 27.5 ppb (26) | 8.3 ppb (8) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.81 ppb (10) | N/A | N/A | 26.0 | |
| April 19, 2021, 2 a.m. | 18.6 ppb (18) | 6.6 ppb (7) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | N/A | 18.0 | |
| April 19, 2021, 1 a.m. | 19.3 ppb (19) | 7.7 ppb (8) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | N/A | 19.0 | |
| April 19, 2021, midnight | 14.5 ppb (14) | 5.6 ppb (6) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.58 ppb (7) | N/A | N/A | 14.0 | |
| April 18, 2021, 11 p.m. | 19.8 ppb (19) | 6.6 ppb (7) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.68 ppb (8) | N/A | N/A | 19.0 | |
| April 18, 2021, 10 p.m. | 14.6 ppb (14) | 5.4 ppb (6) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | N/A | 14.0 | |
| April 18, 2021, 9 p.m. | 15.5 ppb (15) | 6.1 ppb (6) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | N/A | 15.0 | |
| April 18, 2021, 8 p.m. | 14.6 ppb (14) | 6.0 ppb (6) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | N/A | 14.0 | |
| April 18, 2021, 7 p.m. | 8.9 ppb (9) | 4.7 ppb (5) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 9.0 | |
| April 18, 2021, 6 p.m. | 4.5 ppb (5) | 1.9 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | N/A | 5.0 | |
| April 18, 2021, 5 p.m. | 3.2 ppb (4) | 1.8 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 4.0 | |
| April 18, 2021, 4 p.m. | 4.5 ppb (5) | 1.8 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 5.0 | |
| April 18, 2021, 3 p.m. | 31.7 ppb (30) | 14.6 ppb (14) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.81 ppb (10) | N/A | N/A | 30.0 | |
| April 18, 2021, 2 p.m. | 43.0 ppb (41) | 22.5 ppb (22) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 1.07 ppb (13) | N/A | N/A | 41.0 | |
| April 18, 2021, 1 p.m. | 38.9 ppb (37) | 20.3 ppb (20) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.99 ppb (12) | N/A | N/A | 37.0 | |
| April 18, 2021, noon | 27.0 ppb (26) | 8.8 ppb (9) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.74 ppb (8) | N/A | N/A | 26.0 | |
| April 18, 2021, 11 a.m. | 24.7 ppb (24) | 5.8 ppb (6) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.75 ppb (10) | N/A | N/A | 24.0 | |
| April 18, 2021, 10 a.m. | 22.4 ppb (22) | 3.6 ppb (4) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.88 ppb (11) | N/A | N/A | 22.0 | |
| April 18, 2021, 9 a.m. | 18.4 ppb (18) | 2.5 ppb (3) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.8 ppb (10) | N/A | N/A | 18.0 | |
| April 18, 2021, 8 a.m. | 20.4 ppb (20) | 3.3 ppb (4) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.81 ppb (10) | N/A | N/A | 20.0 | |
| April 18, 2021, 7 a.m. | 32.3 ppb (31) | 10.1 ppb (10) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.98 ppb (12) | N/A | N/A | 31.0 | |
| April 18, 2021, 6 a.m. | 28.4 ppb (27) | 8.4 ppb (8) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 1.03 ppb (12) | N/A | N/A | 27.0 | |
| April 18, 2021, 5 a.m. | 30.4 ppb (29) | 10.3 ppb (10) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.91 ppb (11) | N/A | N/A | 29.0 | |
| April 18, 2021, 4 a.m. | 29.6 ppb (28) | 8.6 ppb (9) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 0.86 ppb (11) | N/A | N/A | 28.0 | |
| April 18, 2021, 3 a.m. | 29.2 ppb (28) | 9.9 ppb (10) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.85 ppb (10) | N/A | N/A | 28.0 | |
| April 18, 2021, 2 a.m. | 26.1 ppb (25) | 8.5 ppb (9) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.81 ppb (10) | N/A | N/A | 25.0 | |
| April 18, 2021, 1 a.m. | 26.8 ppb (26) | 9.7 ppb (10) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.76 ppb (10) | N/A | N/A | 26.0 | |
| April 18, 2021, midnight | 24.5 ppb (24) | 8.8 ppb (9) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.73 ppb (8) | N/A | N/A | 24.0 | |
| April 17, 2021, 11 p.m. | 21.0 ppb (20) | 9.2 ppb (9) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | N/A | 20.0 | |
| April 17, 2021, 10 p.m. | 20.3 ppb (20) | 8.8 ppb (9) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 20.0 | |
| April 17, 2021, 9 p.m. | 22.0 ppb (21) | 9.5 ppb (9) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | N/A | 21.0 | |
| April 17, 2021, 8 p.m. | 22.3 ppb (22) | 9.7 ppb (10) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | N/A | 22.0 | |
| April 17, 2021, 7 p.m. | 19.4 ppb (19) | 8.3 ppb (8) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | N/A | 19.0 | |
| April 17, 2021, 6 p.m. | 24.6 ppb (24) | 10.6 ppb (10) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.74 ppb (8) | N/A | N/A | 24.0 | |
| April 17, 2021, 5 p.m. | 22.2 ppb (21) | 10.0 ppb (10) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | N/A | 21.0 | |
| April 17, 2021, 4 p.m. | 15.6 ppb (15) | 6.4 ppb (7) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | N/A | 15.0 | |
| April 17, 2021, 3 p.m. | 15.2 ppb (15) | 6.6 ppb (7) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.48 ppb (6) | N/A | N/A | 15.0 | |
| April 17, 2021, 2 p.m. | 16.1 ppb (16) | 7.0 ppb (7) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.49 ppb (6) | N/A | N/A | 16.0 | |
| April 17, 2021, 1 p.m. | 12.0 ppb (12) | 4.4 ppb (5) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 12.0 | |
| April 17, 2021, noon | 9.3 ppb (9) | 3.0 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 9.0 | |
| April 17, 2021, 11 a.m. | 16.9 ppb (16) | 7.3 ppb (7) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 16.0 | |
| April 17, 2021, 10 a.m. | 9.8 ppb (10) | 3.5 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.38 ppb (5) | N/A | N/A | 10.0 | |
| April 17, 2021, 9 a.m. | 11.9 ppb (12) | 3.2 ppb (4) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.56 ppb (7) | N/A | N/A | 12.0 | |
| April 17, 2021, 8 a.m. | 22.3 ppb (22) | 7.4 ppb (7) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.68 ppb (8) | N/A | N/A | 22.0 | |
| April 17, 2021, 7 a.m. | 24.9 ppb (24) | 7.7 ppb (8) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.68 ppb (8) | N/A | N/A | 24.0 | |
| April 17, 2021, 6 a.m. | 25.9 ppb (25) | 8.7 ppb (9) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.73 ppb (8) | N/A | N/A | 25.0 | |
| April 17, 2021, 5 a.m. | 43.1 ppb (41) | 17.0 ppb (17) | N/A | 26.0 ppb (25) | N/A | N/A | N/A | 0.9 ppb (11) | N/A | N/A | 41.0 | |
| April 17, 2021, 4 a.m. | 35.6 ppb (34) | 12.6 ppb (12) | N/A | 23.0 ppb (22) | N/A | N/A | N/A | 0.81 ppb (10) | N/A | N/A | 34.0 | |
| April 17, 2021, 3 a.m. | 34.2 ppb (33) | 14.7 ppb (14) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.79 ppb (10) | N/A | N/A | 33.0 | |
| April 17, 2021, 2 a.m. | 28.9 ppb (28) | 12.3 ppb (12) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.77 ppb (10) | N/A | N/A | 28.0 | |
| April 17, 2021, 1 a.m. | 27.8 ppb (27) | 12.3 ppb (12) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.74 ppb (8) | N/A | N/A | 27.0 | |
| April 17, 2021, midnight | 26.8 ppb (26) | 13.1 ppb (13) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | N/A | 26.0 | |
| April 16, 2021, 11 p.m. | 28.7 ppb (28) | 14.0 ppb (14) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | N/A | 28.0 | |
| April 16, 2021, 10 p.m. | 31.7 ppb (30) | 16.9 ppb (16) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | N/A | 30.0 | |
| April 16, 2021, 9 p.m. | 26.0 ppb (25) | 11.2 ppb (11) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | N/A | 25.0 | |
| April 16, 2021, 8 p.m. | 28.3 ppb (27) | 12.8 ppb (13) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.57 ppb (7) | N/A | N/A | 27.0 | |
| April 16, 2021, 7 p.m. | 30.3 ppb (29) | 14.2 ppb (14) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | N/A | 29.0 | |
| April 16, 2021, 6 p.m. | 34.4 ppb (33) | 14.6 ppb (14) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.66 ppb (8) | N/A | N/A | 33.0 | |
| April 16, 2021, 5 p.m. | 40.4 ppb (39) | 18.1 ppb (18) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.77 ppb (10) | N/A | N/A | 39.0 | |
| April 16, 2021, 4 p.m. | 39.4 ppb (38) | 18.7 ppb (18) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | N/A | 38.0 | |
| April 16, 2021, 3 p.m. | 41.1 ppb (39) | 20.3 ppb (20) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 0.85 ppb (10) | N/A | N/A | 39.0 | |
| April 16, 2021, 2 p.m. | 34.0 ppb (33) | 17.4 ppb (17) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.72 ppb (8) | N/A | N/A | 33.0 | |
| April 16, 2021, 1 p.m. | 41.6 ppb (40) | 18.1 ppb (18) | N/A | 23.0 ppb (22) | N/A | N/A | N/A | 0.73 ppb (8) | N/A | N/A | 40.0 | |
| April 16, 2021, noon | 43.7 ppb (42) | 20.0 ppb (19) | N/A | 24.0 ppb (23) | N/A | N/A | N/A | 0.85 ppb (10) | N/A | N/A | 42.0 | |
| April 16, 2021, 11 a.m. | 18.4 ppb (18) | 4.6 ppb (5) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | N/A | 18.0 | |
| April 16, 2021, 10 a.m. | 14.2 ppb (14) | 2.6 ppb (3) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.46 ppb (6) | N/A | N/A | 14.0 | |
| April 16, 2021, 9 a.m. | 16.1 ppb (16) | 3.2 ppb (4) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | N/A | 16.0 | |
| April 16, 2021, 8 a.m. | 15.9 ppb (15) | 2.7 ppb (3) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | N/A | 15.0 | |
| April 16, 2021, 7 a.m. | 26.2 ppb (25) | 7.5 ppb (8) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | N/A | 25.0 | |
| April 16, 2021, 6 a.m. | 40.2 ppb (38) | 15.7 ppb (15) | N/A | 24.0 ppb (23) | N/A | N/A | N/A | 0.86 ppb (11) | N/A | N/A | 38.0 | |
| April 16, 2021, 5 a.m. | 42.2 ppb (40) | 16.9 ppb (16) | N/A | 25.0 ppb (24) | N/A | N/A | N/A | 0.78 ppb (10) | N/A | N/A | 40.0 | |
| April 16, 2021, 4 a.m. | 40.4 ppb (39) | 18.6 ppb (18) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.85 ppb (10) | N/A | N/A | 39.0 | |
| April 16, 2021, 3 a.m. | 39.1 ppb (37) | 16.8 ppb (16) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.83 ppb (10) | N/A | N/A | 37.0 | |
| April 16, 2021, 2 a.m. | 32.3 ppb (31) | 14.3 ppb (14) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.65 ppb (8) | N/A | N/A | 31.0 | |
| April 16, 2021, 1 a.m. | 32.1 ppb (31) | 14.9 ppb (15) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.74 ppb (8) | N/A | N/A | 31.0 | |
| April 16, 2021, midnight | 28.4 ppb (27) | 14.0 ppb (14) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.68 ppb (8) | N/A | N/A | 27.0 | |
| April 15, 2021, 11 p.m. | 27.8 ppb (27) | 14.4 ppb (14) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | N/A | 27.0 | |
| April 15, 2021, 10 p.m. | 29.8 ppb (29) | 14.6 ppb (14) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.73 ppb (8) | N/A | N/A | 29.0 | |
| April 15, 2021, 9 p.m. | 28.5 ppb (27) | 13.9 ppb (14) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | N/A | 27.0 | |
| April 15, 2021, 8 p.m. | 28.9 ppb (28) | 13.4 ppb (13) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | N/A | 28.0 | |
| April 15, 2021, 7 p.m. | 31.1 ppb (30) | 14.6 ppb (14) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.58 ppb (7) | N/A | N/A | 30.0 | |
| April 15, 2021, 6 p.m. | 33.2 ppb (32) | 15.6 ppb (15) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | N/A | 32.0 | |
| April 15, 2021, 5 p.m. | 35.5 ppb (34) | 17.2 ppb (17) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.58 ppb (7) | N/A | N/A | 34.0 | |
| April 15, 2021, 4 p.m. | 30.2 ppb (29) | 13.7 ppb (13) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | N/A | 29.0 | |
| April 15, 2021, 3 p.m. | 31.5 ppb (30) | 15.9 ppb (15) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 30.0 | |
| April 15, 2021, 2 p.m. | 42.2 ppb (40) | 21.6 ppb (21) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | N/A | 40.0 | |
| April 15, 2021, 1 p.m. | 32.8 ppb (31) | 14.3 ppb (14) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.56 ppb (7) | N/A | N/A | 31.0 | |
| April 15, 2021, noon | 41.1 ppb (39) | 14.4 ppb (14) | N/A | 27.0 ppb (26) | N/A | N/A | N/A | 0.71 ppb (8) | N/A | N/A | 39.0 | |
| April 15, 2021, 11 a.m. | 19.8 ppb (19) | 6.7 ppb (7) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.45 ppb (6) | N/A | N/A | 19.0 |