Cambridge (Horns Point Rd) MD, US: 38.5876, -76.1408
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug. 1, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (27) | N/A | N/A | 1.0 μg/m3 (5) | 27.0 | |
| Aug. 1, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (22) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Aug. 1, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (24) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Aug. 1, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (27) | N/A | N/A | 2.0 μg/m3 (9) | 27.0 | |
| July 31, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (30) | N/A | N/A | 2.0 μg/m3 (9) | 30.0 | |
| July 31, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 44.0 ppb (41) | N/A | N/A | 3.0 μg/m3 (13) | 41.0 | |
| July 31, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 3.0 μg/m3 (13) | 42.0 | |
| July 31, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 4.0 μg/m3 (17) | 42.0 | |
| July 31, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 44.0 ppb (41) | N/A | N/A | 3.0 μg/m3 (13) | 41.0 | |
| July 31, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 43.0 ppb (40) | N/A | N/A | 2.0 μg/m3 (9) | 40.0 | |
| July 31, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 40.0 ppb (38) | N/A | N/A | 0.0 μg/m3 (0) | 38.0 | |
| July 31, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 37.0 ppb (35) | N/A | N/A | 0.0 μg/m3 (0) | 35.0 | |
| July 31, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 34.0 ppb (32) | N/A | N/A | 3.0 μg/m3 (13) | 32.0 | |
| July 31, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (29) | N/A | N/A | 2.0 μg/m3 (9) | 29.0 | |
| July 31, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (27) | N/A | N/A | 1.0 μg/m3 (5) | 27.0 | |
| July 31, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (26) | N/A | N/A | 3.0 μg/m3 (13) | 26.0 | |
| July 31, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (26) | N/A | N/A | 6.0 μg/m3 (25) | 26.0 | |
| July 31, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (26) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 31, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (26) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 31, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (27) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 31, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (29) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 31, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 35.0 ppb (33) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 31, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (36) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 31, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 39.0 ppb (37) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 31, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (29) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 31, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 33.0 ppb (31) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 31, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (36) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 31, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 48.0 ppb (45) | N/A | N/A | 9.0 μg/m3 (38) | 45.0 | |
| July 30, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 55.0 ppb (51) | N/A | N/A | 10.0 μg/m3 (42) | 51.0 | |
| July 30, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 62.0 ppb (74) | N/A | N/A | 11.0 μg/m3 (46) | 74.0 | |
| July 30, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 66.0 ppb (87) | N/A | N/A | 14.0 μg/m3 (55) | 87.0 | |
| July 30, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 67.0 ppb (91) | N/A | N/A | 14.0 μg/m3 (55) | 91.0 | |
| July 30, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 72.0 ppb (102) | N/A | N/A | 15.0 μg/m3 (58) | 102.0 | |
| July 30, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 72.0 ppb (102) | N/A | N/A | 17.0 μg/m3 (62) | 102.0 | |
| July 30, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 73.0 ppb (103) | N/A | N/A | 13.0 μg/m3 (53) | 103.0 | |
| July 30, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 67.0 ppb (91) | N/A | N/A | 15.0 μg/m3 (58) | 91.0 | |
| July 30, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 61.0 ppb (71) | N/A | N/A | 17.0 μg/m3 (62) | 71.0 | |
| July 30, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 57.0 ppb (58) | N/A | N/A | 14.0 μg/m3 (55) | 58.0 | |
| July 30, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 51.0 ppb (48) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 30, 2021, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 45.0 ppb (42) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 30, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 39.0 ppb (37) | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| July 30, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (14) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 30, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | N/A | 19.0 μg/m3 (66) | 66.0 | |
| July 30, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 12.0 ppb (12) | N/A | N/A | 21.0 μg/m3 (70) | 70.0 | |
| July 30, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 10.0 ppb (10) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 30, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 14.0 ppb (13) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 30, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 16.0 ppb (15) | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| July 30, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 20.0 ppb (19) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 30, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 28.0 ppb (26) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 30, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 34.0 ppb (32) | N/A | N/A | 19.0 μg/m3 (66) | 66.0 | |
| July 30, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 26.0 ppb (25) | N/A | N/A | 20.0 μg/m3 (68) | 68.0 | |
| July 30, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 39.0 ppb (37) | N/A | N/A | 20.0 μg/m3 (68) | 68.0 | |
| July 29, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 47.0 ppb (44) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 29, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 53.0 ppb (50) | N/A | N/A | 10.0 μg/m3 (42) | 50.0 | |
| July 29, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 58.0 ppb (61) | N/A | N/A | 9.0 μg/m3 (38) | 61.0 | |
| July 29, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 51.0 ppb (48) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 29, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 49.0 ppb (46) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 29, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 52.0 ppb (49) | N/A | N/A | 8.0 μg/m3 (34) | 49.0 | |
| July 29, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 50.0 ppb (47) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 29, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 50.0 ppb (47) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 29, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 49.0 ppb (46) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 29, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 44.0 ppb (41) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 29, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 41.0 ppb (38) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 29, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 40.0 ppb (38) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 29, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 39.0 ppb (37) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 29, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 35.0 ppb (33) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 29, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 36.0 ppb (34) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 29, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 39.0 ppb (37) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 29, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 41.0 ppb (38) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 29, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (36) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 29, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 29, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 54.0 ppb (50) | N/A | N/A | 10.0 μg/m3 (42) | 50.0 | |
| July 29, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 49.0 ppb (46) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 29, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 53.0 ppb (50) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 29, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 60.0 ppb (68) | N/A | N/A | 15.0 μg/m3 (58) | 68.0 | |
| July 29, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 58.0 ppb (61) | N/A | N/A | 15.0 μg/m3 (58) | 61.0 | |
| July 28, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 65.0 ppb (84) | N/A | N/A | 8.0 μg/m3 (34) | 84.0 | |
| July 28, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 72.0 ppb (102) | N/A | N/A | 11.0 μg/m3 (46) | 102.0 | |
| July 28, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 81.0 ppb (107) | N/A | N/A | 18.0 μg/m3 (64) | 107.0 | |
| July 28, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 79.0 ppb (106) | N/A | N/A | 11.0 μg/m3 (46) | 106.0 | |
| July 28, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 74.0 ppb (103) | N/A | N/A | 9.0 μg/m3 (38) | 103.0 | |
| July 28, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 73.0 ppb (103) | N/A | N/A | 6.0 μg/m3 (25) | 103.0 | |
| July 28, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 70.0 ppb (100) | N/A | N/A | 9.0 μg/m3 (38) | 100.0 | |
| July 28, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 69.0 ppb (97) | N/A | N/A | 12.0 μg/m3 (50) | 97.0 | |
| July 28, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 64.0 ppb (81) | N/A | N/A | 9.0 μg/m3 (38) | 81.0 | |
| July 28, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 58.0 ppb (61) | N/A | N/A | 8.0 μg/m3 (34) | 61.0 | |
| July 28, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 49.0 ppb (46) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 28, 2021, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 38.0 ppb (36) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 28, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (25) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 28, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 10.0 ppb (10) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 28, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 28, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 9.0 ppb (9) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 28, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 13.0 ppb (13) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 28, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 15.0 ppb (14) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 28, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (21) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 28, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 26.0 ppb (25) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 28, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (27) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 28, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (29) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 28, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 34.0 ppb (32) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 28, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (30) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 27, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 40.0 ppb (38) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 27, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 57.0 ppb (58) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 27, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 60.0 ppb (68) | N/A | N/A | 10.0 μg/m3 (42) | 68.0 | |
| July 27, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 61.0 ppb (71) | N/A | N/A | 15.0 μg/m3 (58) | 71.0 | |
| July 27, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 64.0 ppb (81) | N/A | N/A | 12.0 μg/m3 (50) | 81.0 | |
| July 27, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 65.0 ppb (84) | N/A | N/A | 12.0 μg/m3 (50) | 84.0 | |
| July 27, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 64.0 ppb (81) | N/A | N/A | 13.0 μg/m3 (53) | 81.0 | |
| July 27, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 66.0 ppb (87) | N/A | N/A | 15.0 μg/m3 (58) | 87.0 | |
| July 27, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 59.0 ppb (65) | N/A | N/A | 10.0 μg/m3 (42) | 65.0 | |
| July 27, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 53.0 ppb (50) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 27, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 48.0 ppb (45) | N/A | N/A | 8.0 μg/m3 (34) | 45.0 | |
| July 27, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (36) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 27, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 25.0 ppb (24) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 27, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 8.0 ppb (8) | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| July 27, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 10.0 ppb (10) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 27, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 27, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 31.0 ppb (29) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 27, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (25) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 27, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 7.0 ppb (7) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 27, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 10.0 ppb (10) | N/A | N/A | 22.0 μg/m3 (72) | 72.0 | |
| July 27, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 17.0 ppb (16) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 27, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (20) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 27, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (22) | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| July 27, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (28) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 26, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 42.0 ppb (39) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 26, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 60.0 ppb (68) | N/A | N/A | 10.0 μg/m3 (42) | 68.0 | |
| July 26, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 61.0 ppb (71) | N/A | N/A | 15.0 μg/m3 (58) | 71.0 | |
| July 26, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 57.0 ppb (58) | N/A | N/A | 13.0 μg/m3 (53) | 58.0 | |
| July 26, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 61.0 ppb (71) | N/A | N/A | 16.0 μg/m3 (60) | 71.0 | |
| July 26, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 63.0 ppb (78) | N/A | N/A | 11.0 μg/m3 (46) | 78.0 | |
| July 26, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 62.0 ppb (74) | N/A | N/A | 13.0 μg/m3 (53) | 74.0 | |
| July 26, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 60.0 ppb (68) | N/A | N/A | 13.0 μg/m3 (53) | 68.0 | |
| July 26, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 55.0 ppb (51) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 26, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 46.0 ppb (43) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 26, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 40.0 ppb (38) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 26, 2021, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 33.0 ppb (31) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 26, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (2) | 26.0 ppb (25) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 26, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (25) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 26, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 26, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 19.0 ppb (18) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 26, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 19.0 ppb (18) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 26, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (20) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 26, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (25) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 26, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 29.0 ppb (27) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 26, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 30.0 ppb (28) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 26, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (30) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 26, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 33.0 ppb (31) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 26, 2021, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 35.0 ppb (33) | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| July 25, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 39.0 ppb (37) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 25, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 44.0 ppb (41) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 25, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 44.0 ppb (41) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 25, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 43.0 ppb (40) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 25, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 44.0 ppb (41) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 25, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 42.0 ppb (39) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 25, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 41.0 ppb (38) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 25, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 40.0 ppb (38) | N/A | N/A | 7.0 μg/m3 (30) | 38.0 | |
| July 25, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (36) | N/A | N/A | 8.0 μg/m3 (34) | 36.0 | |
| July 25, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 36.0 ppb (34) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 25, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 37.0 ppb (35) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 25, 2021, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 38.0 ppb (36) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 25, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 39.0 ppb (37) | N/A | N/A | 7.0 μg/m3 (30) | 37.0 | |
| July 25, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 42.0 ppb (39) | N/A | N/A | 5.0 μg/m3 (21) | 39.0 | |
| July 25, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 43.0 ppb (40) | N/A | N/A | 7.0 μg/m3 (30) | 40.0 | |
| July 25, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 41.0 ppb (38) | N/A | N/A | 5.0 μg/m3 (21) | 38.0 | |
| July 25, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 45.0 ppb (42) | N/A | N/A | 6.0 μg/m3 (25) | 42.0 | |
| July 25, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 48.0 ppb (45) | N/A | N/A | 5.0 μg/m3 (21) | 45.0 | |
| July 25, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 49.0 ppb (46) | N/A | N/A | 5.0 μg/m3 (21) | 46.0 | |
| July 25, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 48.0 ppb (45) | N/A | N/A | 6.0 μg/m3 (25) | 45.0 |