Merced (S Coffee St) CA, US: 37.2817, -120.433601
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| June 23, 2021, 3 p.m. | 3.6 ppb (4) | 0.9 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 1.0 μg/m3 (5) | 21.0 | |
| June 23, 2021, 2 p.m. | 3.7 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 23, 2021, 1 p.m. | 3.5 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 18.0 ppb (17) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 23, 2021, noon | 3.3 ppb (4) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 18.0 ppb (17) | N/A | N/A | 1.0 μg/m3 (5) | 17.0 | |
| June 23, 2021, 11 a.m. | 2.4 ppb (3) | 0.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 3.0 μg/m3 (13) | 18.0 | |
| June 23, 2021, 10 a.m. | 2.4 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 20.0 ppb (19) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 23, 2021, 9 a.m. | 2.5 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 23, 2021, 8 a.m. | 3.0 ppb (3) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 1.0 μg/m3 (5) | 20.0 | |
| June 23, 2021, 7 a.m. | 3.5 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 2.0 μg/m3 (9) | 22.0 | |
| June 23, 2021, 6 a.m. | 4.3 ppb (5) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 5.0 μg/m3 (21) | 25.0 | |
| June 23, 2021, 5 a.m. | 4.1 ppb (4) | 0.3 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 7.0 μg/m3 (30) | 33.0 | |
| June 23, 2021, 4 a.m. | 3.8 ppb (4) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 5.0 μg/m3 (21) | 38.0 | |
| June 23, 2021, 3 a.m. | 3.5 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 3.0 μg/m3 (13) | 48.0 | |
| June 23, 2021, 2 a.m. | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 58.0 ppb (61) | N/A | N/A | 4.0 μg/m3 (17) | 61.0 | |
| June 23, 2021, 1 a.m. | 2.7 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 4.0 μg/m3 (17) | 58.0 | |
| June 23, 2021, midnight | 3.2 ppb (4) | 0.5 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 55.0 ppb (51) | N/A | N/A | 4.0 μg/m3 (17) | 51.0 | |
| June 22, 2021, 11 p.m. | 2.6 ppb (3) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 4.0 μg/m3 (17) | 45.0 | |
| June 22, 2021, 10 p.m. | 3.1 ppb (3) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 3.0 μg/m3 (13) | 45.0 | |
| June 22, 2021, 9 p.m. | 3.5 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | 3.0 μg/m3 (13) | 45.0 | |
| June 22, 2021, 8 p.m. | 4.1 ppb (4) | 0.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 4.0 μg/m3 (17) | 42.0 | |
| June 22, 2021, 7 p.m. | 4.6 ppb (5) | 0.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 5.0 μg/m3 (21) | 40.0 | |
| June 22, 2021, 6 p.m. | 3.8 ppb (4) | 0.5 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 6.0 μg/m3 (25) | 35.0 | |
| June 22, 2021, 5 p.m. | 2.9 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 4.0 μg/m3 (17) | 29.0 | |
| June 22, 2021, 4 p.m. | 3.1 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 5.0 μg/m3 (21) | 25.0 | |
| June 22, 2021, 3 p.m. | 3.2 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 22, 2021, 2 p.m. | 3.5 ppb (4) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 17.0 ppb (16) | N/A | N/A | 3.0 μg/m3 (13) | 16.0 | |
| June 22, 2021, 1 p.m. | 4.2 ppb (4) | 0.7 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| June 22, 2021, noon | 3.7 ppb (4) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 2.0 μg/m3 (9) | 13.0 | |
| June 22, 2021, 11 a.m. | 3.1 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 16.0 ppb (15) | N/A | N/A | 2.0 μg/m3 (9) | 15.0 | |
| June 22, 2021, 10 a.m. | 2.9 ppb (3) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 18.0 ppb (17) | N/A | N/A | 2.0 μg/m3 (9) | 17.0 | |
| June 22, 2021, 9 a.m. | 2.5 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 19.0 | |
| June 22, 2021, 8 a.m. | 2.7 ppb (3) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 2.0 μg/m3 (9) | 21.0 | |
| June 22, 2021, 7 a.m. | 3.0 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 24.0 ppb (23) | N/A | N/A | 5.0 μg/m3 (21) | 23.0 | |
| June 22, 2021, 6 a.m. | 3.1 ppb (3) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 22, 2021, 5 a.m. | 3.7 ppb (4) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 5.0 μg/m3 (21) | 31.0 | |
| June 22, 2021, 4 a.m. | 3.3 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 22, 2021, 3 a.m. | 3.4 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 22, 2021, 2 a.m. | 3.2 ppb (4) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 64.0 ppb (81) | N/A | N/A | 12.0 μg/m3 (50) | 81.0 | |
| June 22, 2021, 1 a.m. | 3.5 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 76.0 ppb (104) | N/A | N/A | 11.0 μg/m3 (46) | 104.0 | |
| June 22, 2021, midnight | 3.8 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 78.0 ppb (105) | N/A | N/A | 9.0 μg/m3 (38) | 105.0 | |
| June 21, 2021, 11 p.m. | 4.1 ppb (4) | 0.4 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 76.0 ppb (104) | N/A | N/A | 10.0 μg/m3 (42) | 104.0 | |
| June 21, 2021, 10 p.m. | 3.8 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 67.0 ppb (91) | N/A | N/A | 4.0 μg/m3 (17) | 91.0 | |
| June 21, 2021, 9 p.m. | 4.2 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 68.0 ppb (94) | N/A | N/A | 7.0 μg/m3 (30) | 94.0 | |
| June 21, 2021, 8 p.m. | 5.2 ppb (5) | 0.4 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 65.0 ppb (84) | N/A | N/A | 13.0 μg/m3 (53) | 84.0 | |
| June 21, 2021, 7 p.m. | 5.3 ppb (5) | 0.5 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 58.0 ppb (61) | N/A | N/A | 9.0 μg/m3 (38) | 61.0 | |
| June 21, 2021, 6 p.m. | 7.8 ppb (8) | 1.0 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 11.0 μg/m3 (46) | 49.0 | |
| June 21, 2021, 5 p.m. | 8.2 ppb (8) | 1.2 ppb (2) | N/A | 7.0 ppb (7) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 21, 2021, 4 p.m. | 5.5 ppb (6) | 0.9 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 21, 2021, 3 p.m. | 4.3 ppb (5) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 29.0 ppb (27) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 21, 2021, 2 p.m. | 4.2 ppb (4) | 0.7 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 21, 2021, 1 p.m. | 4.9 ppb (5) | 0.7 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 24.0 ppb (23) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 21, 2021, noon | 4.2 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 21, 2021, 11 a.m. | 4.3 ppb (5) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 21, 2021, 10 a.m. | 3.1 ppb (3) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 32.0 ppb (30) | N/A | N/A | 5.0 μg/m3 (21) | 30.0 | |
| June 21, 2021, 9 a.m. | 3.6 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 4.0 μg/m3 (17) | 31.0 | |
| June 21, 2021, 8 a.m. | 3.8 ppb (4) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 6.0 μg/m3 (25) | 31.0 | |
| June 21, 2021, 7 a.m. | 4.2 ppb (4) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 21, 2021, 6 a.m. | 3.9 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 21, 2021, 5 a.m. | 3.8 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 21, 2021, 4 a.m. | 4.9 ppb (5) | 0.1 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 13.0 μg/m3 (53) | 58.0 | |
| June 21, 2021, 3 a.m. | 5.0 ppb (5) | 0.2 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 66.0 ppb (87) | N/A | N/A | 9.0 μg/m3 (38) | 87.0 | |
| June 21, 2021, 2 a.m. | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 71.0 ppb (101) | N/A | N/A | 7.0 μg/m3 (30) | 101.0 | |
| June 21, 2021, 1 a.m. | 3.0 ppb (3) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 74.0 ppb (103) | N/A | N/A | 8.0 μg/m3 (34) | 103.0 | |
| June 21, 2021, midnight | 3.2 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 73.0 ppb (103) | N/A | N/A | 6.0 μg/m3 (25) | 103.0 | |
| June 20, 2021, 11 p.m. | 3.4 ppb (4) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 75.0 ppb (104) | N/A | N/A | 5.0 μg/m3 (21) | 104.0 | |
| June 20, 2021, 10 p.m. | 3.3 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 73.0 ppb (103) | N/A | N/A | 5.0 μg/m3 (21) | 103.0 | |
| June 20, 2021, 9 p.m. | 3.3 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 69.0 ppb (97) | N/A | N/A | 7.0 μg/m3 (30) | 97.0 | |
| June 20, 2021, 8 p.m. | 3.0 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 63.0 ppb (78) | N/A | N/A | 7.0 μg/m3 (30) | 78.0 | |
| June 20, 2021, 7 p.m. | 3.3 ppb (4) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 61.0 ppb (71) | N/A | N/A | 6.0 μg/m3 (25) | 71.0 | |
| June 20, 2021, 6 p.m. | 3.7 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 57.0 ppb (58) | N/A | N/A | 7.0 μg/m3 (30) | 58.0 | |
| June 20, 2021, 5 p.m. | 3.9 ppb (4) | 0.3 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 8.0 μg/m3 (34) | 49.0 | |
| June 20, 2021, 4 p.m. | 5.9 ppb (6) | 0.8 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | 9.0 μg/m3 (38) | 41.0 | |
| June 20, 2021, 3 p.m. | 7.0 ppb (7) | 1.0 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 20, 2021, 2 p.m. | 6.9 ppb (7) | 0.8 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 29.0 ppb (27) | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 20, 2021, 1 p.m. | 8.3 ppb (8) | 0.6 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 20, 2021, noon | 4.7 ppb (5) | -0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 20, 2021, 11 a.m. | 3.8 ppb (4) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 20, 2021, 10 a.m. | 3.1 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 8.0 μg/m3 (34) | 35.0 | |
| June 20, 2021, 9 a.m. | 5.1 ppb (5) | 0.1 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 20, 2021, 8 a.m. | 4.4 ppb (5) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 8.0 μg/m3 (34) | 35.0 | |
| June 20, 2021, 7 a.m. | 3.7 ppb (4) | -0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | 7.0 μg/m3 (30) | 38.0 | |
| June 20, 2021, 6 a.m. | 4.0 ppb (4) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 9.0 μg/m3 (38) | 40.0 | |
| June 20, 2021, 5 a.m. | 3.8 ppb (4) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 51.0 ppb (48) | N/A | N/A | 11.0 μg/m3 (46) | 48.0 | |
| June 20, 2021, 4 a.m. | 4.5 ppb (5) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 65.0 ppb (84) | N/A | N/A | 12.0 μg/m3 (50) | 84.0 | |
| June 20, 2021, 3 a.m. | 4.0 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 73.0 ppb (103) | N/A | N/A | 11.0 μg/m3 (46) | 103.0 | |
| June 20, 2021, 2 a.m. | 3.5 ppb (4) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 76.0 ppb (104) | N/A | N/A | 19.0 μg/m3 (66) | 104.0 | |
| June 20, 2021, 1 a.m. | 3.3 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 80.0 ppb (106) | N/A | N/A | 9.0 μg/m3 (38) | 106.0 | |
| June 20, 2021, midnight | 4.1 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 80.0 ppb (106) | N/A | N/A | 14.0 μg/m3 (55) | 106.0 | |
| June 19, 2021, 11 p.m. | 3.5 ppb (4) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 78.0 ppb (105) | N/A | N/A | 15.0 μg/m3 (58) | 105.0 | |
| June 19, 2021, 10 p.m. | 3.6 ppb (4) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 79.0 ppb (106) | N/A | N/A | 11.0 μg/m3 (46) | 106.0 | |
| June 19, 2021, 9 p.m. | 4.0 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 79.0 ppb (106) | N/A | N/A | 7.0 μg/m3 (30) | 106.0 | |
| June 19, 2021, 8 p.m. | 4.3 ppb (5) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 77.0 ppb (105) | N/A | N/A | 7.0 μg/m3 (30) | 105.0 | |
| June 19, 2021, 7 p.m. | 5.2 ppb (5) | 0.3 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 74.0 ppb (103) | N/A | N/A | 15.0 μg/m3 (58) | 103.0 | |
| June 19, 2021, 6 p.m. | 5.8 ppb (6) | 0.3 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 71.0 ppb (101) | N/A | N/A | 11.0 μg/m3 (46) | 101.0 | |
| June 19, 2021, 5 p.m. | 9.6 ppb (10) | 0.6 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | 65.0 ppb (84) | N/A | N/A | 11.0 μg/m3 (46) | 84.0 | |
| June 19, 2021, 4 p.m. | 8.2 ppb (8) | 0.7 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | 10.0 μg/m3 (42) | 50.0 | |
| June 19, 2021, 3 p.m. | 10.8 ppb (11) | 1.4 ppb (2) | N/A | 9.0 ppb (9) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| June 19, 2021, 2 p.m. | 15.4 ppb (15) | 2.8 ppb (3) | N/A | 13.0 ppb (13) | N/A | N/A | 20.0 ppb (19) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| June 19, 2021, 1 p.m. | 22.3 ppb (22) | 4.9 ppb (5) | N/A | 17.0 ppb (17) | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 19, 2021, noon | 26.5 ppb (25) | 3.3 ppb (4) | N/A | 23.0 ppb (22) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 19, 2021, 11 a.m. | 22.5 ppb (22) | 1.0 ppb (1) | N/A | 22.0 ppb (21) | N/A | N/A | 6.0 ppb (6) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| June 19, 2021, 10 a.m. | 25.6 ppb (25) | 2.9 ppb (3) | N/A | 23.0 ppb (22) | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 19, 2021, 9 a.m. | 19.7 ppb (19) | 0.7 ppb (1) | N/A | 19.0 ppb (18) | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| June 19, 2021, 8 a.m. | 15.0 ppb (15) | 0.3 ppb (1) | N/A | 15.0 ppb (15) | N/A | N/A | 17.0 ppb (16) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| June 19, 2021, 7 a.m. | 13.7 ppb (13) | 0.1 ppb (1) | N/A | 14.0 ppb (14) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| June 19, 2021, 6 a.m. | 19.4 ppb (19) | 3.3 ppb (4) | N/A | 16.0 ppb (16) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 19, 2021, 5 a.m. | 9.3 ppb (9) | 0.0 ppb (0) | N/A | 9.0 ppb (9) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 18.0 μg/m3 (64) | 64.0 | |
| June 19, 2021, 4 a.m. | 8.1 ppb (8) | 0.0 ppb (0) | N/A | 8.0 ppb (8) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 19, 2021, 3 a.m. | 12.3 ppb (12) | 0.0 ppb (0) | N/A | 12.0 ppb (12) | N/A | N/A | 67.0 ppb (91) | N/A | N/A | 8.0 μg/m3 (34) | 91.0 | |
| June 19, 2021, 2 a.m. | 5.2 ppb (5) | 0.0 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 82.0 ppb (107) | N/A | N/A | 7.0 μg/m3 (30) | 107.0 | |
| June 19, 2021, 1 a.m. | 4.1 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 93.0 ppb (113) | N/A | N/A | 9.0 μg/m3 (38) | 113.0 | |
| June 19, 2021, midnight | 4.2 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 95.0 ppb (114) | N/A | N/A | 8.0 μg/m3 (34) | 114.0 | |
| June 18, 2021, 11 p.m. | 4.0 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 85.0 ppb (109) | N/A | N/A | 13.0 μg/m3 (53) | 109.0 | |
| June 18, 2021, 10 p.m. | 3.8 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 87.0 ppb (110) | N/A | N/A | 10.0 μg/m3 (42) | 110.0 | |
| June 18, 2021, 9 p.m. | 4.1 ppb (4) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 86.0 ppb (109) | N/A | N/A | 7.0 μg/m3 (30) | 109.0 | |
| June 18, 2021, 8 p.m. | 4.7 ppb (5) | 0.2 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 80.0 ppb (106) | N/A | N/A | 10.0 μg/m3 (42) | 106.0 | |
| June 18, 2021, 7 p.m. | 4.7 ppb (5) | 0.2 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 76.0 ppb (104) | N/A | N/A | 13.0 μg/m3 (53) | 104.0 | |
| June 18, 2021, 6 p.m. | 4.4 ppb (5) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 73.0 ppb (103) | N/A | N/A | 7.0 μg/m3 (30) | 103.0 | |
| June 18, 2021, 5 p.m. | 4.6 ppb (5) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 72.0 ppb (102) | N/A | N/A | 7.0 μg/m3 (30) | 102.0 | |
| June 18, 2021, 4 p.m. | 6.3 ppb (6) | 0.5 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 63.0 ppb (78) | N/A | N/A | 9.0 μg/m3 (38) | 78.0 | |
| June 18, 2021, 3 p.m. | 14.5 ppb (14) | 2.3 ppb (3) | N/A | 12.0 ppb (12) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 18, 2021, 2 p.m. | 28.2 ppb (27) | 6.1 ppb (6) | N/A | 22.0 ppb (21) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 18, 2021, 1 p.m. | 21.7 ppb (21) | 1.7 ppb (2) | N/A | 20.0 ppb (19) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| June 18, 2021, noon | 24.5 ppb (24) | 0.7 ppb (1) | N/A | 24.0 ppb (23) | N/A | N/A | 17.0 ppb (16) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 18, 2021, 11 a.m. | 11.9 ppb (12) | 0.4 ppb (1) | N/A | 12.0 ppb (12) | N/A | N/A | 29.0 ppb (27) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| June 18, 2021, 10 a.m. | 7.3 ppb (7) | 0.2 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 18, 2021, 9 a.m. | 14.4 ppb (14) | 0.4 ppb (1) | N/A | 14.0 ppb (14) | N/A | N/A | 20.0 ppb (19) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| June 18, 2021, 8 a.m. | 17.1 ppb (17) | 0.4 ppb (1) | N/A | 17.0 ppb (17) | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| June 18, 2021, 7 a.m. | 20.3 ppb (20) | 0.6 ppb (1) | N/A | 20.0 ppb (19) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 18, 2021, 6 a.m. | 18.0 ppb (17) | 0.4 ppb (1) | N/A | 18.0 ppb (17) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 18, 2021, 5 a.m. | 25.9 ppb (25) | 0.3 ppb (1) | N/A | 26.0 ppb (25) | N/A | N/A | 24.0 ppb (23) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| June 18, 2021, 4 a.m. | 15.5 ppb (15) | 0.2 ppb (1) | N/A | 15.0 ppb (15) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 18, 2021, 3 a.m. | 10.2 ppb (10) | 0.0 ppb (0) | N/A | 10.0 ppb (10) | N/A | N/A | 68.0 ppb (94) | N/A | N/A | 11.0 μg/m3 (46) | 94.0 | |
| June 18, 2021, 2 a.m. | 4.5 ppb (5) | 0.0 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 88.0 ppb (110) | N/A | N/A | 10.0 μg/m3 (42) | 110.0 | |
| June 18, 2021, 1 a.m. | 3.7 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 92.0 ppb (113) | N/A | N/A | 11.0 μg/m3 (46) | 113.0 | |
| June 18, 2021, midnight | 4.9 ppb (5) | 0.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 84.0 ppb (108) | N/A | N/A | 7.0 μg/m3 (30) | 108.0 | |
| June 17, 2021, 11 p.m. | 3.2 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 76.0 ppb (104) | N/A | N/A | 7.0 μg/m3 (30) | 104.0 | |
| June 17, 2021, 10 p.m. | 3.9 ppb (4) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 79.0 ppb (106) | N/A | N/A | 9.0 μg/m3 (38) | 106.0 | |
| June 17, 2021, 9 p.m. | 4.2 ppb (4) | 0.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 78.0 ppb (105) | N/A | N/A | 11.0 μg/m3 (46) | 105.0 | |
| June 17, 2021, 8 p.m. | 4.5 ppb (5) | 0.3 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 72.0 ppb (102) | N/A | N/A | 4.0 μg/m3 (17) | 102.0 | |
| June 17, 2021, 7 p.m. | 3.5 ppb (4) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 63.0 ppb (78) | N/A | N/A | 2.0 μg/m3 (9) | 78.0 | |
| June 17, 2021, 6 p.m. | 3.0 ppb (3) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 59.0 ppb (65) | N/A | N/A | 4.0 μg/m3 (17) | 65.0 | |
| June 17, 2021, 5 p.m. | 4.5 ppb (5) | 0.3 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 56.0 ppb (55) | N/A | N/A | 7.0 μg/m3 (30) | 55.0 | |
| June 17, 2021, 4 p.m. | 7.7 ppb (8) | 0.9 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | 8.0 μg/m3 (34) | 42.0 | |
| June 17, 2021, 3 p.m. | 12.9 ppb (13) | 2.5 ppb (3) | N/A | 10.0 ppb (10) | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 17, 2021, 2 p.m. | 19.8 ppb (19) | 5.7 ppb (6) | N/A | 14.0 ppb (14) | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 17, 2021, 1 p.m. | 31.7 ppb (30) | 13.0 ppb (13) | N/A | 19.0 ppb (18) | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 17, 2021, noon | 25.4 ppb (24) | 7.3 ppb (7) | N/A | 18.0 ppb (17) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 4.0 μg/m3 (17) | 24.0 | |
| June 17, 2021, 11 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 | |
| June 17, 2021, 10 a.m. | 32.7 ppb (31) | 7.3 ppb (7) | N/A | 25.0 ppb (24) | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 17, 2021, 9 a.m. | 31.4 ppb (30) | 4.5 ppb (5) | N/A | 27.0 ppb (26) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 17, 2021, 8 a.m. | 26.1 ppb (25) | 1.7 ppb (2) | N/A | 24.0 ppb (23) | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 17, 2021, 7 a.m. | 30.5 ppb (29) | 2.8 ppb (3) | N/A | 28.0 ppb (27) | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 17, 2021, 6 a.m. | 22.5 ppb (22) | 1.5 ppb (2) | N/A | 21.0 ppb (20) | N/A | N/A | 15.0 ppb (14) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 17, 2021, 5 a.m. | 11.9 ppb (12) | 0.2 ppb (1) | N/A | 12.0 ppb (12) | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 17, 2021, 4 a.m. | 8.8 ppb (9) | 0.0 ppb (0) | N/A | 9.0 ppb (9) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 17, 2021, 3 a.m. | 6.5 ppb (7) | 0.1 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 56.0 ppb (55) | N/A | N/A | 8.0 μg/m3 (34) | 55.0 | |
| June 17, 2021, 2 a.m. | 3.8 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 62.0 ppb (74) | N/A | N/A | 6.0 μg/m3 (25) | 74.0 | |
| June 17, 2021, 1 a.m. | 3.8 ppb (4) | 0.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 65.0 ppb (84) | N/A | N/A | 7.0 μg/m3 (30) | 84.0 | |
| June 17, 2021, midnight | 3.2 ppb (4) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 66.0 ppb (87) | N/A | N/A | 4.0 μg/m3 (17) | 87.0 | |
| June 16, 2021, 11 p.m. | 2.8 ppb (3) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 64.0 ppb (81) | N/A | N/A | 6.0 μg/m3 (25) | 81.0 | |
| June 16, 2021, 10 p.m. | 2.8 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 62.0 ppb (74) | N/A | N/A | 5.0 μg/m3 (21) | 74.0 | |
| June 16, 2021, 9 p.m. | 3.1 ppb (3) | 0.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 58.0 ppb (61) | N/A | N/A | 8.0 μg/m3 (34) | 61.0 | |
| June 16, 2021, 8 p.m. | 3.2 ppb (4) | 0.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 59.0 ppb (65) | N/A | N/A | 5.0 μg/m3 (21) | 65.0 | |
| June 16, 2021, 7 p.m. | 3.4 ppb (4) | 0.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 58.0 ppb (61) | N/A | N/A | 4.0 μg/m3 (17) | 61.0 | |
| June 16, 2021, 6 p.m. | 3.7 ppb (4) | 0.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | 7.0 μg/m3 (30) | 49.0 | |
| June 16, 2021, 5 p.m. | 4.4 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | 7.0 μg/m3 (30) | 40.0 | |
| June 16, 2021, 4 p.m. | 4.1 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 6.0 μg/m3 (25) | 34.0 |