Palm Spgs (Racquet Club Estates) CA, US: 33.852605, -116.540965
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 22, 2021, 9 a.m. | 1.9 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | 0.09 ppb (2) | 17.7 μg/m3 (17) | N/A | 40.0 | |
| April 22, 2021, 8 a.m. | 1.7 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | 0.1 ppb (2) | 21.8 μg/m3 (21) | N/A | 41.0 | |
| April 22, 2021, 7 a.m. | 2.1 ppb (2) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 46.0 ppb (43) | 0.1 ppb (2) | 21.1 μg/m3 (20) | N/A | 43.0 | |
| April 22, 2021, 6 a.m. | 2.6 ppb (3) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 47.0 ppb (44) | 0.11 ppb (2) | 18.7 μg/m3 (18) | N/A | 44.0 | |
| April 22, 2021, 5 a.m. | 2.9 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 49.0 ppb (46) | 0.11 ppb (2) | 19.4 μg/m3 (18) | N/A | 46.0 | |
| April 22, 2021, 4 a.m. | 2.6 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (47) | 0.1 ppb (2) | 22.4 μg/m3 (21) | N/A | 47.0 | |
| April 22, 2021, 3 a.m. | 2.8 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (47) | 0.11 ppb (2) | 26.2 μg/m3 (25) | N/A | 47.0 | |
| April 22, 2021, 2 a.m. | 3.7 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 51.0 ppb (48) | 0.11 ppb (2) | 22.0 μg/m3 (21) | N/A | 48.0 | |
| April 22, 2021, 1 a.m. | 2.3 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (47) | 0.11 ppb (2) | 28.4 μg/m3 (27) | N/A | 47.0 | |
| April 22, 2021, midnight | 2.6 ppb (3) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 51.0 ppb (48) | 0.11 ppb (2) | 40.5 μg/m3 (38) | N/A | 48.0 | |
| April 21, 2021, 11 p.m. | 2.8 ppb (3) | 1.1 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 52.0 ppb (49) | 0.11 ppb (2) | 33.9 μg/m3 (32) | N/A | 49.0 | |
| April 21, 2021, 10 p.m. | 1.5 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (50) | 0.11 ppb (2) | 27.5 μg/m3 (26) | N/A | 50.0 | |
| April 21, 2021, 9 p.m. | 1.5 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (48) | 0.11 ppb (2) | 28.4 μg/m3 (27) | N/A | 48.0 | |
| April 21, 2021, 8 p.m. | 1.5 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | 0.11 ppb (2) | 26.8 μg/m3 (25) | N/A | 47.0 | |
| April 21, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.6 μg/m3 (25) | N/A | 25.0 | |
| April 21, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 48.2 μg/m3 (45) | N/A | 45.0 | |
| April 21, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.1 μg/m3 (33) | N/A | 33.0 | |
| April 21, 2021, 4 p.m. | 1.6 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | 0.1 ppb (2) | 38.2 μg/m3 (36) | N/A | 44.0 | |
| April 21, 2021, 3 p.m. | 2.2 ppb (3) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | 0.1 ppb (2) | 30.5 μg/m3 (29) | N/A | 43.0 | |
| April 21, 2021, 2 p.m. | 3.4 ppb (4) | 1.2 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 42.0 ppb (39) | 0.09 ppb (2) | 34.4 μg/m3 (32) | N/A | 39.0 | |
| April 21, 2021, 1 p.m. | 2.9 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 39.0 ppb (37) | 0.1 ppb (2) | 44.8 μg/m3 (42) | N/A | 42.0 | |
| April 21, 2021, noon | 2.4 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 37.0 ppb (35) | 0.11 ppb (2) | 41.2 μg/m3 (39) | N/A | 39.0 | |
| April 21, 2021, 11 a.m. | 2.2 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 38.0 ppb (36) | 0.1 ppb (2) | 37.4 μg/m3 (35) | N/A | 36.0 | |
| April 21, 2021, 10 a.m. | 2.4 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 38.0 ppb (36) | 0.11 ppb (2) | 28.9 μg/m3 (27) | N/A | 36.0 | |
| April 21, 2021, 9 a.m. | 2.1 ppb (2) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 41.0 ppb (38) | 0.1 ppb (2) | 24.1 μg/m3 (23) | N/A | 38.0 | |
| April 21, 2021, 8 a.m. | 1.9 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | 0.11 ppb (2) | 18.8 μg/m3 (18) | N/A | 42.0 | |
| April 21, 2021, 7 a.m. | 1.7 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (50) | 0.1 ppb (2) | 17.7 μg/m3 (17) | N/A | 50.0 | |
| April 21, 2021, 6 a.m. | 1.6 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (50) | 0.11 ppb (2) | 18.6 μg/m3 (18) | N/A | 50.0 | |
| April 21, 2021, 5 a.m. | 2.4 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 55.0 ppb (51) | 0.1 ppb (2) | 32.8 μg/m3 (31) | N/A | 51.0 | |
| April 21, 2021, 4 a.m. | 2.9 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 57.0 ppb (58) | 0.1 ppb (2) | 39.3 μg/m3 (37) | N/A | 58.0 | |
| April 21, 2021, 3 a.m. | 2.6 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 59.0 ppb (65) | 0.11 ppb (2) | 27.5 μg/m3 (26) | N/A | 65.0 | |
| April 21, 2021, 2 a.m. | 2.2 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 64.0 ppb (81) | 0.12 ppb (2) | 26.5 μg/m3 (25) | N/A | 81.0 | |
| April 21, 2021, 1 a.m. | 2.2 ppb (3) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 67.0 ppb (91) | 0.12 ppb (2) | 6.9 μg/m3 (7) | N/A | 91.0 | |
| April 21, 2021, midnight | 1.4 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 65.0 ppb (84) | 0.11 ppb (2) | 9.6 μg/m3 (9) | N/A | 84.0 | |
| April 20, 2021, 11 p.m. | 1.6 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 65.0 ppb (84) | 0.13 ppb (2) | 19.7 μg/m3 (19) | N/A | 84.0 | |
| April 20, 2021, 10 p.m. | 1.6 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 65.0 ppb (84) | 0.13 ppb (2) | 15.3 μg/m3 (15) | N/A | 84.0 | |
| April 20, 2021, 9 p.m. | 1.9 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 66.0 ppb (87) | 0.13 ppb (2) | 20.2 μg/m3 (19) | N/A | 87.0 | |
| April 20, 2021, 8 p.m. | 2.0 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 65.0 ppb (84) | 0.13 ppb (2) | 21.4 μg/m3 (20) | N/A | 84.0 | |
| April 20, 2021, 7 p.m. | 2.2 ppb (3) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 64.0 ppb (81) | 0.12 ppb (2) | 21.1 μg/m3 (20) | N/A | 81.0 | |
| April 20, 2021, 6 p.m. | 3.0 ppb (3) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 63.0 ppb (78) | 0.14 ppb (2) | 25.8 μg/m3 (24) | N/A | 78.0 | |
| April 20, 2021, 5 p.m. | 6.7 ppb (7) | 1.7 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | 59.0 ppb (65) | 0.18 ppb (3) | 32.1 μg/m3 (30) | N/A | 65.0 | |
| April 20, 2021, 4 p.m. | 10.6 ppb (10) | 2.9 ppb (3) | N/A | 8.0 ppb (8) | N/A | N/A | 51.0 ppb (48) | 0.2 ppb (3) | 25.2 μg/m3 (24) | N/A | 48.0 | |
| April 20, 2021, 3 p.m. | 10.8 ppb (11) | 2.3 ppb (3) | N/A | 8.0 ppb (8) | N/A | N/A | 47.0 ppb (44) | 0.22 ppb (3) | 25.4 μg/m3 (24) | N/A | 44.0 | |
| April 20, 2021, 2 p.m. | 15.1 ppb (15) | 2.8 ppb (3) | N/A | 12.0 ppb (12) | N/A | N/A | 37.0 ppb (35) | 0.38 ppb (5) | 20.9 μg/m3 (20) | N/A | 35.0 | |
| April 20, 2021, 1 p.m. | 6.6 ppb (7) | 1.1 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | 48.0 ppb (45) | 0.17 ppb (3) | 19.5 μg/m3 (19) | N/A | 45.0 | |
| April 20, 2021, noon | 18.2 ppb (18) | 9.4 ppb (9) | N/A | 9.0 ppb (9) | N/A | N/A | 45.0 ppb (42) | 0.18 ppb (3) | 15.8 μg/m3 (15) | N/A | 42.0 | |
| April 20, 2021, 11 a.m. | 6.3 ppb (6) | 0.7 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 44.0 ppb (41) | 0.23 ppb (3) | 20.1 μg/m3 (19) | N/A | 41.0 | |
| April 20, 2021, 10 a.m. | 6.9 ppb (7) | 0.7 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 42.0 ppb (39) | 0.19 ppb (3) | 15.5 μg/m3 (15) | N/A | 39.0 | |
| April 20, 2021, 9 a.m. | 4.6 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 51.0 ppb (48) | 0.18 ppb (3) | 21.7 μg/m3 (21) | N/A | 48.0 | |
| April 20, 2021, 8 a.m. | 4.4 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 52.0 ppb (49) | 0.16 ppb (3) | 22.2 μg/m3 (21) | N/A | 49.0 | |
| April 20, 2021, 7 a.m. | 3.1 ppb (3) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 57.0 ppb (58) | 0.14 ppb (2) | 17.9 μg/m3 (17) | N/A | 58.0 | |
| April 20, 2021, 6 a.m. | 5.8 ppb (6) | 0.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 53.0 ppb (50) | 0.24 ppb (3) | 14.8 μg/m3 (14) | N/A | 50.0 | |
| April 20, 2021, 5 a.m. | 2.7 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 60.0 ppb (68) | 0.12 ppb (2) | 10.9 μg/m3 (11) | N/A | 68.0 | |
| April 20, 2021, 4 a.m. | 3.5 ppb (4) | 1.8 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 60.0 ppb (68) | 0.13 ppb (2) | 11.8 μg/m3 (11) | N/A | 68.0 | |
| April 20, 2021, 3 a.m. | 2.3 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 60.0 ppb (68) | 0.13 ppb (2) | 14.6 μg/m3 (14) | N/A | 68.0 | |
| April 20, 2021, 2 a.m. | 1.8 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 62.0 ppb (74) | 0.13 ppb (2) | 10.0 μg/m3 (10) | N/A | 74.0 | |
| April 20, 2021, 1 a.m. | 1.9 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 64.0 ppb (81) | 0.13 ppb (2) | 7.8 μg/m3 (8) | N/A | 81.0 | |
| April 20, 2021, midnight | 1.9 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 67.0 ppb (91) | 0.13 ppb (2) | 7.4 μg/m3 (7) | N/A | 91.0 | |
| April 19, 2021, 11 p.m. | 1.9 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 68.0 ppb (94) | 0.14 ppb (2) | 7.0 μg/m3 (7) | N/A | 94.0 | |
| April 19, 2021, 10 p.m. | 2.7 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 65.0 ppb (84) | 0.15 ppb (2) | 16.1 μg/m3 (15) | N/A | 84.0 | |
| April 19, 2021, 9 p.m. | 4.0 ppb (4) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 61.0 ppb (71) | 0.13 ppb (2) | 5.4 μg/m3 (5) | N/A | 71.0 | |
| April 19, 2021, 8 p.m. | 2.1 ppb (2) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 60.0 ppb (68) | 0.14 ppb (2) | 7.8 μg/m3 (8) | N/A | 68.0 | |
| April 19, 2021, 7 p.m. | 3.2 ppb (4) | 1.1 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 59.0 ppb (65) | 0.14 ppb (2) | 11.3 μg/m3 (11) | N/A | 65.0 | |
| April 19, 2021, 6 p.m. | 3.8 ppb (4) | 1.1 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 56.0 ppb (55) | 0.14 ppb (2) | 21.8 μg/m3 (21) | N/A | 55.0 | |
| April 19, 2021, 5 p.m. | 5.3 ppb (5) | 1.5 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 52.0 ppb (49) | 0.16 ppb (3) | 26.4 μg/m3 (25) | N/A | 49.0 | |
| April 19, 2021, 4 p.m. | 10.1 ppb (10) | 2.8 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | 46.0 ppb (43) | 0.31 ppb (4) | 23.5 μg/m3 (22) | N/A | 43.0 | |
| April 19, 2021, 3 p.m. | 13.5 ppb (13) | 3.4 ppb (4) | N/A | 10.0 ppb (10) | N/A | N/A | 39.0 ppb (37) | 0.23 ppb (3) | 20.6 μg/m3 (20) | N/A | 37.0 | |
| April 19, 2021, 2 p.m. | 18.8 ppb (18) | 4.3 ppb (5) | N/A | 14.0 ppb (14) | N/A | N/A | 33.0 ppb (31) | 0.17 ppb (3) | 15.7 μg/m3 (15) | N/A | 31.0 | |
| April 19, 2021, 1 p.m. | 16.5 ppb (16) | 1.1 ppb (2) | N/A | 15.0 ppb (15) | N/A | N/A | 32.0 ppb (30) | 0.15 ppb (2) | 14.5 μg/m3 (14) | N/A | 30.0 | |
| April 19, 2021, noon | 10.5 ppb (10) | 0.6 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 37.0 ppb (35) | 0.14 ppb (2) | 11.8 μg/m3 (11) | N/A | 35.0 | |
| April 19, 2021, 11 a.m. | 7.8 ppb (8) | 0.6 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 38.0 ppb (36) | 0.12 ppb (2) | 12.6 μg/m3 (12) | N/A | 36.0 | |
| April 19, 2021, 10 a.m. | 9.2 ppb (9) | 0.6 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | 38.0 ppb (36) | 0.13 ppb (2) | 15.3 μg/m3 (15) | N/A | 36.0 | |
| April 19, 2021, 9 a.m. | 13.3 ppb (13) | 0.6 ppb (1) | N/A | 13.0 ppb (13) | N/A | N/A | 34.0 ppb (32) | 0.14 ppb (2) | 16.0 μg/m3 (15) | N/A | 32.0 | |
| April 19, 2021, 8 a.m. | 9.9 ppb (10) | 0.5 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | 37.0 ppb (35) | 0.14 ppb (2) | 18.7 μg/m3 (18) | N/A | 35.0 | |
| April 19, 2021, 7 a.m. | 11.6 ppb (11) | 0.6 ppb (1) | N/A | 11.0 ppb (11) | N/A | N/A | 34.0 ppb (32) | 0.15 ppb (2) | 14.7 μg/m3 (14) | N/A | 32.0 | |
| April 19, 2021, 6 a.m. | 11.7 ppb (12) | 0.7 ppb (1) | N/A | 11.0 ppb (11) | N/A | N/A | 32.0 ppb (30) | 0.17 ppb (3) | 14.9 μg/m3 (14) | N/A | 30.0 | |
| April 19, 2021, 5 a.m. | 10.4 ppb (10) | 0.8 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 36.0 ppb (34) | 0.19 ppb (3) | 15.3 μg/m3 (15) | N/A | 34.0 | |
| April 19, 2021, 4 a.m. | 7.6 ppb (8) | 1.5 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | 41.0 ppb (38) | 0.17 ppb (3) | 10.5 μg/m3 (10) | N/A | 38.0 | |
| April 19, 2021, 3 a.m. | 5.7 ppb (6) | 0.7 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 46.0 ppb (43) | 0.17 ppb (3) | 8.3 μg/m3 (8) | N/A | 43.0 | |
| April 19, 2021, 2 a.m. | 2.6 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 54.0 ppb (50) | 0.12 ppb (2) | 6.6 μg/m3 (7) | N/A | 50.0 | |
| April 19, 2021, 1 a.m. | 1.6 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 57.0 ppb (58) | 0.1 ppb (2) | 1.6 μg/m3 (2) | N/A | 58.0 | |
| April 19, 2021, midnight | 1.1 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 56.0 ppb (55) | 0.11 ppb (2) | 4.7 μg/m3 (5) | N/A | 55.0 | |
| April 18, 2021, 11 p.m. | 1.1 ppb (2) | 0.6 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 55.0 ppb (51) | 0.11 ppb (2) | 6.3 μg/m3 (6) | N/A | 51.0 | |
| April 18, 2021, 10 p.m. | 1.2 ppb (2) | 0.9 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 53.0 ppb (50) | 0.1 ppb (2) | 6.4 μg/m3 (6) | N/A | 50.0 | |
| April 18, 2021, 9 p.m. | 1.0 ppb (1) | 0.6 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 54.0 ppb (50) | 0.11 ppb (2) | 9.7 μg/m3 (9) | N/A | 50.0 | |
| April 18, 2021, 8 p.m. | 1.1 ppb (2) | 0.6 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 54.0 ppb (50) | 0.11 ppb (2) | 12.6 μg/m3 (12) | N/A | 50.0 | |
| April 18, 2021, 7 p.m. | 1.1 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | 0.11 ppb (2) | 11.2 μg/m3 (11) | N/A | 47.0 | |
| April 18, 2021, 6 p.m. | 1.3 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (46) | 0.1 ppb (2) | 12.2 μg/m3 (12) | N/A | 46.0 | |
| April 18, 2021, 5 p.m. | 1.2 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | 0.1 ppb (2) | 10.8 μg/m3 (10) | N/A | 43.0 | |
| April 18, 2021, 4 p.m. | 1.3 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | 0.1 ppb (2) | 4.2 μg/m3 (4) | N/A | 43.0 | |
| April 18, 2021, 3 p.m. | 2.0 ppb (2) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | 0.11 ppb (2) | 10.7 μg/m3 (10) | N/A | 42.0 | |
| April 18, 2021, 2 p.m. | 2.6 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 44.0 ppb (41) | 0.11 ppb (2) | 11.4 μg/m3 (11) | N/A | 41.0 | |
| April 18, 2021, 1 p.m. | 2.3 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 43.0 ppb (40) | 0.12 ppb (2) | 6.0 μg/m3 (6) | N/A | 40.0 | |
| April 18, 2021, noon | 1.8 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | 0.11 ppb (2) | 6.1 μg/m3 (6) | N/A | 39.0 | |
| April 18, 2021, 11 a.m. | 1.8 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | 0.11 ppb (2) | 9.4 μg/m3 (9) | N/A | 38.0 | |
| April 18, 2021, 10 a.m. | 2.5 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 38.0 ppb (36) | 0.12 ppb (2) | 8.0 μg/m3 (8) | N/A | 36.0 | |
| April 18, 2021, 9 a.m. | 2.2 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 42.0 ppb (39) | 0.11 ppb (2) | 6.4 μg/m3 (6) | N/A | 39.0 | |
| April 18, 2021, 8 a.m. | 2.3 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 43.0 ppb (40) | 0.11 ppb (2) | 10.6 μg/m3 (10) | N/A | 40.0 | |
| April 18, 2021, 7 a.m. | 2.9 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 41.0 ppb (38) | 0.12 ppb (2) | 8.8 μg/m3 (9) | N/A | 38.0 | |
| April 18, 2021, 6 a.m. | 4.1 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 39.0 ppb (37) | 0.13 ppb (2) | 6.2 μg/m3 (6) | N/A | 37.0 | |
| April 18, 2021, 5 a.m. | 5.2 ppb (5) | 1.4 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 42.0 ppb (39) | 0.12 ppb (2) | 6.4 μg/m3 (6) | N/A | 39.0 | |
| April 18, 2021, 4 a.m. | 2.5 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 46.0 ppb (43) | 0.11 ppb (2) | 9.5 μg/m3 (9) | N/A | 43.0 | |
| April 18, 2021, 3 a.m. | 2.4 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 46.0 ppb (43) | 0.12 ppb (2) | 11.4 μg/m3 (11) | N/A | 43.0 | |
| April 18, 2021, 2 a.m. | 1.9 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (45) | 0.11 ppb (2) | 13.0 μg/m3 (13) | N/A | 45.0 | |
| April 18, 2021, 1 a.m. | 1.9 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | 0.11 ppb (2) | 13.5 μg/m3 (13) | N/A | 47.0 | |
| April 18, 2021, midnight | 1.4 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | 0.11 ppb (2) | 10.9 μg/m3 (11) | N/A | 47.0 | |
| April 17, 2021, 11 p.m. | 1.3 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (48) | 0.11 ppb (2) | 8.2 μg/m3 (8) | N/A | 48.0 | |
| April 17, 2021, 10 p.m. | 1.3 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (49) | 0.11 ppb (2) | 7.8 μg/m3 (8) | N/A | 49.0 | |
| April 17, 2021, 9 p.m. | 1.4 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (50) | 0.11 ppb (2) | 15.3 μg/m3 (15) | N/A | 50.0 | |
| April 17, 2021, 8 p.m. | 1.3 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (50) | 0.11 ppb (2) | 13.5 μg/m3 (13) | N/A | 50.0 | |
| April 17, 2021, 7 p.m. | 1.5 ppb (2) | 0.6 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (48) | 0.11 ppb (2) | 12.5 μg/m3 (12) | N/A | 48.0 | |
| April 17, 2021, 6 p.m. | 1.9 ppb (2) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (48) | 0.12 ppb (2) | 18.9 μg/m3 (18) | N/A | 48.0 | |
| April 17, 2021, 5 p.m. | 1.9 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (48) | 0.25 ppb (3) | 22.2 μg/m3 (21) | N/A | 48.0 | |
| April 17, 2021, 4 p.m. | 4.7 ppb (5) | 1.5 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 49.0 ppb (46) | 0.12 ppb (2) | 25.6 μg/m3 (24) | N/A | 46.0 | |
| April 17, 2021, 3 p.m. | 8.5 ppb (9) | 2.0 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | 41.0 ppb (38) | 0.16 ppb (3) | 34.3 μg/m3 (32) | N/A | 38.0 | |
| April 17, 2021, 2 p.m. | 11.4 ppb (11) | 2.2 ppb (3) | N/A | 9.0 ppb (9) | N/A | N/A | 35.0 ppb (33) | 0.21 ppb (3) | 33.9 μg/m3 (32) | N/A | 33.0 | |
| April 17, 2021, 1 p.m. | 7.4 ppb (7) | 0.8 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 40.0 ppb (38) | 0.17 ppb (3) | 31.3 μg/m3 (29) | N/A | 38.0 | |
| April 17, 2021, noon | 6.9 ppb (7) | 0.7 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 42.0 ppb (39) | 0.17 ppb (3) | 30.0 μg/m3 (28) | N/A | 39.0 | |
| April 17, 2021, 11 a.m. | 5.0 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 47.0 ppb (44) | 0.16 ppb (3) | 31.9 μg/m3 (30) | N/A | 44.0 | |
| April 17, 2021, 10 a.m. | 4.9 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 49.0 ppb (46) | 0.15 ppb (2) | 33.5 μg/m3 (32) | N/A | 46.0 | |
| April 17, 2021, 9 a.m. | 5.0 ppb (5) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 53.0 ppb (50) | 0.16 ppb (3) | 34.8 μg/m3 (33) | N/A | 50.0 | |
| April 17, 2021, 8 a.m. | 4.4 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 55.0 ppb (51) | 0.16 ppb (3) | 34.9 μg/m3 (33) | N/A | 51.0 | |
| April 17, 2021, 7 a.m. | 5.3 ppb (5) | 0.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 54.0 ppb (50) | 0.15 ppb (2) | 29.5 μg/m3 (28) | N/A | 50.0 | |
| April 17, 2021, 6 a.m. | 5.3 ppb (5) | 0.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 55.0 ppb (51) | 0.16 ppb (3) | 30.5 μg/m3 (29) | N/A | 51.0 | |
| April 17, 2021, 5 a.m. | 5.2 ppb (5) | 0.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 55.0 ppb (51) | 0.15 ppb (2) | 34.6 μg/m3 (33) | N/A | 51.0 | |
| April 17, 2021, 4 a.m. | 5.0 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 60.0 ppb (68) | 0.16 ppb (3) | 37.0 μg/m3 (35) | N/A | 68.0 | |
| April 17, 2021, 3 a.m. | 5.0 ppb (5) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 68.0 ppb (94) | 0.17 ppb (3) | 38.4 μg/m3 (36) | N/A | 94.0 | |
| April 17, 2021, 2 a.m. | 4.2 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 71.0 ppb (101) | 0.17 ppb (3) | 35.1 μg/m3 (33) | N/A | 101.0 | |
| April 17, 2021, 1 a.m. | 3.4 ppb (4) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 68.0 ppb (94) | 0.16 ppb (3) | 25.2 μg/m3 (24) | N/A | 94.0 | |
| April 17, 2021, midnight | 2.1 ppb (2) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 63.0 ppb (78) | 0.12 ppb (2) | 15.3 μg/m3 (15) | N/A | 78.0 | |
| April 16, 2021, 11 p.m. | 2.3 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 63.0 ppb (78) | 0.14 ppb (2) | 20.3 μg/m3 (19) | N/A | 78.0 | |
| April 16, 2021, 10 p.m. | 2.8 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 69.0 ppb (97) | 0.15 ppb (2) | 19.0 μg/m3 (18) | N/A | 97.0 | |
| April 16, 2021, 9 p.m. | 3.1 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 67.0 ppb (91) | 0.14 ppb (2) | 15.2 μg/m3 (15) | N/A | 91.0 | |
| April 16, 2021, 8 p.m. | 4.8 ppb (5) | 2.3 ppb (3) | N/A | 2.0 ppb (2) | N/A | N/A | 65.0 ppb (84) | 0.14 ppb (2) | 23.3 μg/m3 (22) | N/A | 84.0 | |
| April 16, 2021, 7 p.m. | 3.4 ppb (4) | 1.2 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 64.0 ppb (81) | 0.12 ppb (2) | 18.3 μg/m3 (17) | N/A | 81.0 | |
| April 16, 2021, 6 p.m. | 3.5 ppb (4) | 1.1 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 66.0 ppb (87) | 0.15 ppb (2) | 24.3 μg/m3 (23) | N/A | 87.0 | |
| April 16, 2021, 5 p.m. | 3.5 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 64.0 ppb (81) | 0.13 ppb (2) | 30.6 μg/m3 (29) | N/A | 81.0 | |
| April 16, 2021, 4 p.m. | 3.9 ppb (4) | 1.1 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 60.0 ppb (68) | 0.15 ppb (2) | 30.3 μg/m3 (29) | N/A | 68.0 | |
| April 16, 2021, 3 p.m. | 9.2 ppb (9) | 2.1 ppb (2) | N/A | 7.0 ppb (7) | N/A | N/A | 51.0 ppb (48) | 0.17 ppb (3) | 33.7 μg/m3 (32) | N/A | 48.0 | |
| April 16, 2021, 2 p.m. | 9.7 ppb (10) | 1.4 ppb (2) | N/A | 8.0 ppb (8) | N/A | N/A | 46.0 ppb (43) | 0.19 ppb (3) | 32.2 μg/m3 (30) | N/A | 43.0 | |
| April 16, 2021, 1 p.m. | 7.6 ppb (8) | 0.8 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 48.0 ppb (45) | 0.17 ppb (3) | 28.0 μg/m3 (26) | N/A | 45.0 | |
| April 16, 2021, noon | 8.1 ppb (8) | 0.8 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 46.0 ppb (43) | 0.16 ppb (3) | 31.2 μg/m3 (29) | N/A | 43.0 | |
| April 16, 2021, 11 a.m. | 3.8 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 54.0 ppb (50) | 0.15 ppb (2) | 40.8 μg/m3 (38) | N/A | 50.0 | |
| April 16, 2021, 10 a.m. | 5.4 ppb (6) | 0.7 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 51.0 ppb (48) | 0.17 ppb (3) | 47.5 μg/m3 (44) | N/A | 48.0 | |
| April 16, 2021, 9 a.m. | 4.9 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 53.0 ppb (50) | 0.15 ppb (2) | 40.1 μg/m3 (38) | N/A | 50.0 | |
| April 16, 2021, 8 a.m. | 6.7 ppb (7) | 0.6 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 49.0 ppb (46) | 0.16 ppb (3) | 37.6 μg/m3 (35) | N/A | 46.0 | |
| April 16, 2021, 7 a.m. | 6.6 ppb (7) | 0.6 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 49.0 ppb (46) | 0.16 ppb (3) | 41.2 μg/m3 (39) | N/A | 46.0 | |
| April 16, 2021, 6 a.m. | 7.1 ppb (7) | 0.7 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 49.0 ppb (46) | 0.17 ppb (3) | 70.4 μg/m3 (59) | N/A | 59.0 | |
| April 16, 2021, 5 a.m. | 6.6 ppb (7) | 0.7 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 53.0 ppb (50) | 0.18 ppb (3) | 54.5 μg/m3 (51) | N/A | 51.0 | |
| April 16, 2021, 4 a.m. | 6.9 ppb (7) | 0.7 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 54.0 ppb (50) | 0.17 ppb (3) | 37.8 μg/m3 (35) | N/A | 50.0 | |
| April 16, 2021, 3 a.m. | 6.4 ppb (7) | 1.1 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | 57.0 ppb (58) | 0.17 ppb (3) | 62.3 μg/m3 (55) | N/A | 58.0 | |
| April 16, 2021, 2 a.m. | 3.8 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 62.0 ppb (74) | 0.15 ppb (2) | 45.6 μg/m3 (43) | N/A | 74.0 | |
| April 16, 2021, 1 a.m. | 4.1 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 69.0 ppb (97) | 0.15 ppb (2) | 38.5 μg/m3 (36) | N/A | 97.0 | |
| April 16, 2021, midnight | 3.5 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 68.0 ppb (94) | 0.15 ppb (2) | 38.4 μg/m3 (36) | N/A | 94.0 | |
| April 15, 2021, 11 p.m. | 2.8 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 63.0 ppb (78) | 0.13 ppb (2) | 28.1 μg/m3 (27) | N/A | 78.0 | |
| April 15, 2021, 10 p.m. | 2.3 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 59.0 ppb (65) | 0.13 ppb (2) | 19.2 μg/m3 (18) | N/A | 65.0 | |
| April 15, 2021, 9 p.m. | 1.7 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 57.0 ppb (58) | 0.12 ppb (2) | 16.0 μg/m3 (15) | N/A | 58.0 | |
| April 15, 2021, 8 p.m. | 1.6 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 56.0 ppb (55) | 0.1 ppb (2) | 18.8 μg/m3 (18) | N/A | 55.0 | |
| April 15, 2021, 7 p.m. | 2.6 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 53.0 ppb (50) | 0.11 ppb (2) | 20.5 μg/m3 (19) | N/A | 50.0 | |
| April 15, 2021, 6 p.m. | 2.8 ppb (3) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 52.0 ppb (49) | 0.11 ppb (2) | 41.1 μg/m3 (39) | N/A | 49.0 | |
| April 15, 2021, 5 p.m. | 4.0 ppb (4) | 1.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 48.0 ppb (45) | 0.13 ppb (2) | 32.5 μg/m3 (31) | N/A | 45.0 | |
| April 15, 2021, 4 p.m. | 5.1 ppb (5) | 1.5 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 45.0 ppb (42) | 0.14 ppb (2) | 23.0 μg/m3 (22) | N/A | 42.0 | |
| April 15, 2021, 3 p.m. | 5.0 ppb (5) | 1.4 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 43.0 ppb (40) | 0.14 ppb (2) | 25.8 μg/m3 (24) | N/A | 40.0 | |
| April 15, 2021, 2 p.m. | 4.3 ppb (5) | 1.1 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 43.0 ppb (40) | 0.13 ppb (2) | 24.9 μg/m3 (24) | N/A | 40.0 | |
| April 15, 2021, 1 p.m. | 3.9 ppb (4) | 0.9 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 44.0 ppb (41) | 0.12 ppb (2) | 23.1 μg/m3 (22) | N/A | 41.0 | |
| April 15, 2021, noon | 2.9 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 46.0 ppb (43) | 0.12 ppb (2) | 21.7 μg/m3 (21) | N/A | 43.0 | |
| April 15, 2021, 11 a.m. | 2.7 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 47.0 ppb (44) | 0.13 ppb (2) | 21.6 μg/m3 (20) | N/A | 44.0 | |
| April 15, 2021, 10 a.m. | 2.6 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 48.0 ppb (45) | 0.12 ppb (2) | 25.7 μg/m3 (24) | N/A | 45.0 |