Broadus (Big Powder Riv E Rd) MT, US: 45.440295, -105.37028
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug. 3, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (55) | N/A | 151.0 μg/m3 (99) | 58.6 μg/m3 (153) | 153.0 | |
| Aug. 3, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (55) | N/A | 147.0 μg/m3 (97) | 56.0 μg/m3 (152) | 152.0 | |
| Aug. 3, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 ppb (65) | N/A | 125.0 μg/m3 (86) | 48.2 μg/m3 (133) | 133.0 | |
| Aug. 3, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (55) | N/A | 103.0 μg/m3 (75) | 36.4 μg/m3 (104) | 104.0 | |
| Aug. 3, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | 63.0 μg/m3 (55) | 26.6 μg/m3 (82) | 82.0 | |
| Aug. 3, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 101.0 μg/m3 (74) | 40.6 μg/m3 (114) | 114.0 | |
| Aug. 3, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 150.0 μg/m3 (99) | 43.8 μg/m3 (122) | 122.0 | |
| Aug. 3, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 207.0 μg/m3 (127) | 59.4 μg/m3 (154) | 154.0 | |
| Aug. 3, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 141.0 μg/m3 (94) | 47.5 μg/m3 (131) | 131.0 | |
| Aug. 3, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 70.0 μg/m3 (59) | 25.1 μg/m3 (79) | 79.0 | |
| Aug. 3, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 30.0 μg/m3 (28) | 12.8 μg/m3 (53) | 53.0 | |
| Aug. 3, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 30.0 μg/m3 (28) | 17.1 μg/m3 (62) | 62.0 | |
| Aug. 3, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 31.0 μg/m3 (29) | 19.9 μg/m3 (68) | 68.0 | |
| Aug. 3, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 33.0 μg/m3 (31) | 19.5 μg/m3 (67) | 67.0 | |
| Aug. 3, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (39) | N/A | 48.0 μg/m3 (45) | 27.9 μg/m3 (85) | 85.0 | |
| Aug. 3, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 35.0 μg/m3 (33) | 15.6 μg/m3 (59) | 59.0 | |
| Aug. 3, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 26.0 μg/m3 (25) | 16.5 μg/m3 (61) | 61.0 | |
| Aug. 3, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | 28.0 μg/m3 (26) | 12.8 μg/m3 (53) | 53.0 | |
| Aug. 3, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | 34.0 μg/m3 (32) | 14.5 μg/m3 (57) | 57.0 | |
| Aug. 3, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (51) | N/A | 54.0 μg/m3 (50) | 16.8 μg/m3 (61) | 61.0 | |
| Aug. 3, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (78) | N/A | 107.0 μg/m3 (77) | 37.6 μg/m3 (107) | 107.0 | |
| Aug. 3, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 69.0 ppb (97) | N/A | 155.0 μg/m3 (101) | 48.5 μg/m3 (134) | 134.0 | |
| Aug. 2, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 69.0 ppb (97) | N/A | 86.0 μg/m3 (67) | 37.6 μg/m3 (107) | 107.0 | |
| Aug. 2, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 70.0 ppb (100) | N/A | 82.0 μg/m3 (65) | 29.5 μg/m3 (88) | 100.0 | |
| Aug. 2, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (61) | N/A | 87.0 μg/m3 (67) | 33.0 μg/m3 (95) | 95.0 | |
| Aug. 2, 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 | |
| Aug. 2, 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 | |
| Aug. 2, 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 | |
| Aug. 2, 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 | |
| Aug. 2, 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 | |
| Aug. 2, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Aug. 2, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 169.0 μg/m3 (108) | 51.4 μg/m3 (141) | 141.0 | |
| Aug. 2, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 160.0 μg/m3 (104) | 47.8 μg/m3 (132) | 132.0 | |
| Aug. 2, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 54.0 μg/m3 (50) | 29.5 μg/m3 (88) | 88.0 | |
| Aug. 2, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 34.0 μg/m3 (32) | 25.8 μg/m3 (80) | 80.0 | |
| Aug. 2, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (25) | N/A | 44.0 μg/m3 (41) | 20.7 μg/m3 (70) | 70.0 | |
| Aug. 2, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (25) | N/A | 50.0 μg/m3 (47) | 24.3 μg/m3 (77) | 77.0 | |
| Aug. 2, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 47.0 μg/m3 (44) | 19.0 μg/m3 (66) | 66.0 | |
| Aug. 2, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 36.0 μg/m3 (34) | 19.1 μg/m3 (66) | 66.0 | |
| Aug. 2, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 36.0 μg/m3 (34) | 20.6 μg/m3 (69) | 69.0 | |
| Aug. 2, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 36.0 μg/m3 (34) | 16.1 μg/m3 (60) | 60.0 | |
| Aug. 2, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | 33.0 μg/m3 (31) | 15.3 μg/m3 (58) | 58.0 | |
| Aug. 2, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | 39.0 μg/m3 (37) | 17.6 μg/m3 (63) | 63.0 | |
| Aug. 2, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (51) | N/A | 71.0 μg/m3 (59) | 29.2 μg/m3 (87) | 87.0 | |
| Aug. 2, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 ppb (71) | N/A | 77.0 μg/m3 (62) | 32.8 μg/m3 (95) | 95.0 | |
| Aug. 1, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 ppb (71) | N/A | 57.0 μg/m3 (52) | 30.3 μg/m3 (90) | 90.0 | |
| Aug. 1, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 ppb (71) | N/A | 52.0 μg/m3 (49) | 30.6 μg/m3 (90) | 90.0 | |
| Aug. 1, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 60.0 ppb (68) | N/A | 61.0 μg/m3 (54) | 29.8 μg/m3 (89) | 89.0 | |
| Aug. 1, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 ppb (65) | N/A | 44.0 μg/m3 (41) | 29.9 μg/m3 (89) | 89.0 | |
| Aug. 1, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | 34.0 μg/m3 (32) | 22.9 μg/m3 (74) | 74.0 | |
| Aug. 1, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (51) | N/A | 29.0 μg/m3 (27) | 21.6 μg/m3 (71) | 71.0 | |
| Aug. 1, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | 32.0 μg/m3 (30) | 15.4 μg/m3 (58) | 58.0 | |
| Aug. 1, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | 41.0 μg/m3 (38) | 20.4 μg/m3 (69) | 69.0 | |
| Aug. 1, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 69.0 μg/m3 (58) | 31.1 μg/m3 (91) | 91.0 | |
| Aug. 1, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 49.0 μg/m3 (46) | 31.3 μg/m3 (92) | 92.0 | |
| Aug. 1, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 34.0 μg/m3 (32) | 22.2 μg/m3 (73) | 73.0 | |
| Aug. 1, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 33.0 μg/m3 (31) | 18.5 μg/m3 (65) | 65.0 | |
| Aug. 1, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 30.0 μg/m3 (28) | 23.6 μg/m3 (76) | 76.0 | |
| Aug. 1, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 32.0 μg/m3 (30) | 22.4 μg/m3 (73) | 73.0 | |
| Aug. 1, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 36.0 μg/m3 (34) | 24.4 μg/m3 (77) | 77.0 | |
| Aug. 1, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (27) | N/A | 29.0 μg/m3 (27) | 25.1 μg/m3 (79) | 79.0 | |
| Aug. 1, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 15.0 μg/m3 (14) | 21.0 μg/m3 (70) | 70.0 | |
| Aug. 1, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 35.0 μg/m3 (33) | 21.2 μg/m3 (71) | 71.0 | |
| Aug. 1, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 35.0 μg/m3 (33) | 24.4 μg/m3 (77) | 77.0 | |
| Aug. 1, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 36.0 μg/m3 (34) | 22.8 μg/m3 (74) | 74.0 | |
| Aug. 1, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 40.0 μg/m3 (38) | 23.4 μg/m3 (75) | 75.0 | |
| Aug. 1, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (41) | N/A | 65.0 μg/m3 (56) | 34.9 μg/m3 (99) | 99.0 | |
| Aug. 1, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | 92.0 μg/m3 (70) | 39.5 μg/m3 (111) | 111.0 | |
| Aug. 1, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | 78.0 μg/m3 (63) | 44.7 μg/m3 (124) | 124.0 | |
| July 31, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 ppb (65) | N/A | 69.0 μg/m3 (58) | 47.6 μg/m3 (131) | 131.0 | |
| July 31, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (61) | N/A | 63.0 μg/m3 (55) | 40.2 μg/m3 (113) | 113.0 | |
| July 31, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (51) | N/A | 51.0 μg/m3 (48) | 27.7 μg/m3 (84) | 84.0 | |
| July 31, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | 52.0 μg/m3 (49) | 23.8 μg/m3 (76) | 76.0 | |
| July 31, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | 56.0 μg/m3 (52) | 18.8 μg/m3 (66) | 66.0 | |
| July 31, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | 65.0 μg/m3 (56) | 20.2 μg/m3 (69) | 69.0 | |
| July 31, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | 91.0 μg/m3 (69) | 26.6 μg/m3 (82) | 82.0 | |
| July 31, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | 109.0 μg/m3 (78) | 57.1 μg/m3 (152) | 152.0 | |
| July 31, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 127.0 μg/m3 (87) | 64.8 μg/m3 (156) | 156.0 | |
| July 31, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (24) | N/A | 158.0 μg/m3 (103) | 70.3 μg/m3 (159) | 159.0 | |
| July 31, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | 144.0 μg/m3 (96) | 74.4 μg/m3 (161) | 161.0 | |
| July 31, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (20) | N/A | 110.0 μg/m3 (79) | 60.3 μg/m3 (154) | 154.0 | |
| July 31, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (22) | N/A | 88.0 μg/m3 (68) | 65.4 μg/m3 (157) | 157.0 | |
| July 31, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 84.0 μg/m3 (66) | 64.7 μg/m3 (156) | 156.0 | |
| July 31, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 95.0 μg/m3 (71) | 62.0 μg/m3 (155) | 155.0 | |
| July 31, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 96.0 μg/m3 (72) | 68.0 μg/m3 (158) | 158.0 | |
| July 31, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 90.0 μg/m3 (69) | 65.1 μg/m3 (156) | 156.0 | |
| July 31, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (42) | N/A | 80.0 μg/m3 (64) | 67.2 μg/m3 (158) | 158.0 | |
| July 31, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | 76.0 μg/m3 (62) | 64.9 μg/m3 (156) | 156.0 | |
| July 31, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (55) | N/A | 63.0 μg/m3 (55) | 43.1 μg/m3 (120) | 120.0 | |
| July 31, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 ppb (71) | N/A | 58.0 μg/m3 (53) | 38.2 μg/m3 (108) | 108.0 | |
| July 31, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 62.0 ppb (74) | N/A | 83.0 μg/m3 (65) | 39.1 μg/m3 (110) | 110.0 | |
| July 31, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 65.0 ppb (84) | N/A | 107.0 μg/m3 (77) | 37.6 μg/m3 (107) | 107.0 | |
| July 31, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 64.0 ppb (81) | N/A | 99.0 μg/m3 (73) | 31.0 μg/m3 (91) | 91.0 | |
| July 30, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 66.0 ppb (87) | N/A | 48.0 μg/m3 (45) | 23.3 μg/m3 (75) | 87.0 | |
| July 30, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 66.0 ppb (87) | N/A | 53.0 μg/m3 (50) | 23.3 μg/m3 (75) | 87.0 | |
| July 30, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 67.0 ppb (91) | N/A | 73.0 μg/m3 (60) | 34.7 μg/m3 (99) | 99.0 | |
| July 30, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 67.0 ppb (91) | N/A | 88.0 μg/m3 (68) | 27.5 μg/m3 (84) | 91.0 | |
| July 30, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 67.0 ppb (91) | N/A | 53.0 μg/m3 (50) | 30.5 μg/m3 (90) | 91.0 | |
| July 30, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 65.0 ppb (84) | N/A | 73.0 μg/m3 (60) | 35.8 μg/m3 (102) | 102.0 | |
| July 30, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 ppb (71) | N/A | 68.0 μg/m3 (58) | 36.1 μg/m3 (103) | 103.0 | |
| July 30, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | 58.0 μg/m3 (53) | 50.5 μg/m3 (138) | 138.0 | |
| July 30, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | 59.0 μg/m3 (53) | 51.0 μg/m3 (140) | 140.0 | |
| July 30, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 63.0 μg/m3 (55) | 43.9 μg/m3 (122) | 122.0 | |
| July 30, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (28) | N/A | 53.0 μg/m3 (50) | 41.4 μg/m3 (116) | 116.0 | |
| July 30, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 41.0 μg/m3 (38) | 35.1 μg/m3 (100) | 100.0 | |
| July 30, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 28.0 μg/m3 (26) | 29.5 μg/m3 (88) | 88.0 | |
| July 30, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 24.0 μg/m3 (23) | 27.3 μg/m3 (83) | 83.0 | |
| July 30, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 23.0 μg/m3 (22) | 26.9 μg/m3 (83) | 83.0 | |
| July 30, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 23.0 μg/m3 (22) | 31.7 μg/m3 (93) | 93.0 | |
| July 30, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 33.0 μg/m3 (31) | 39.7 μg/m3 (112) | 112.0 | |
| July 30, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 30.0 μg/m3 (28) | 20.8 μg/m3 (70) | 70.0 | |
| July 30, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 27.0 μg/m3 (25) | 11.0 μg/m3 (46) | 46.0 | |
| July 30, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 28.0 μg/m3 (26) | 12.5 μg/m3 (52) | 52.0 | |
| July 30, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 21.0 μg/m3 (20) | 8.9 μg/m3 (38) | 38.0 | |
| July 30, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 19.0 μg/m3 (18) | 5.3 μg/m3 (23) | 33.0 | |
| July 30, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (36) | N/A | 20.0 μg/m3 (19) | 4.3 μg/m3 (18) | 36.0 | |
| July 30, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 13.0 μg/m3 (13) | -1.5 μg/m3 (0) | 38.0 | |
| July 29, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (43) | N/A | 25.0 μg/m3 (24) | N/A | 43.0 | |
| July 29, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (45) | N/A | 43.0 μg/m3 (40) | 12.3 μg/m3 (52) | 52.0 | |
| July 29, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (46) | N/A | 28.0 μg/m3 (26) | 4.1 μg/m3 (18) | 46.0 | |
| July 29, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | 22.0 μg/m3 (21) | 5.5 μg/m3 (23) | 44.0 | |
| July 29, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 24.0 μg/m3 (23) | 18.4 μg/m3 (65) | 65.0 | |
| July 29, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 33.0 μg/m3 (31) | 16.1 μg/m3 (60) | 60.0 | |
| July 29, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (31) | N/A | 40.0 μg/m3 (38) | 26.6 μg/m3 (82) | 82.0 | |
| July 29, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (26) | N/A | 36.0 μg/m3 (34) | 26.5 μg/m3 (82) | 82.0 | |
| July 29, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (30) | N/A | 33.0 μg/m3 (31) | 39.4 μg/m3 (111) | 111.0 | |
| July 29, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (29) | N/A | 38.0 μg/m3 (36) | 33.3 μg/m3 (96) | 96.0 | |
| July 29, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (33) | N/A | 38.0 μg/m3 (36) | 27.6 μg/m3 (84) | 84.0 | |
| July 29, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 37.0 μg/m3 (35) | 23.5 μg/m3 (75) | 75.0 | |
| July 29, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 36.0 μg/m3 (34) | 23.4 μg/m3 (75) | 75.0 | |
| July 29, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 35.0 μg/m3 (33) | 24.8 μg/m3 (78) | 78.0 | |
| July 29, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (32) | N/A | 43.0 μg/m3 (40) | 27.6 μg/m3 (84) | 84.0 | |
| July 29, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 42.0 μg/m3 (39) | 21.3 μg/m3 (71) | 71.0 | |
| July 29, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 39.0 μg/m3 (37) | 10.6 μg/m3 (45) | 45.0 | |
| July 29, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 41.0 μg/m3 (38) | 12.5 μg/m3 (52) | 52.0 | |
| July 29, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | 49.0 μg/m3 (46) | 25.4 μg/m3 (79) | 79.0 | |
| July 29, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (47) | N/A | 85.0 μg/m3 (66) | 35.8 μg/m3 (102) | 102.0 | |
| July 29, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | 115.0 μg/m3 (81) | 32.4 μg/m3 (94) | 94.0 | |
| July 29, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (49) | N/A | 91.0 μg/m3 (69) | 35.6 μg/m3 (102) | 102.0 | |
| July 29, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (55) | N/A | 88.0 μg/m3 (68) | 46.1 μg/m3 (128) | 128.0 | |
| July 29, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (78) | N/A | 100.0 μg/m3 (74) | 42.2 μg/m3 (118) | 118.0 | |
| July 28, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 65.0 ppb (84) | N/A | 127.0 μg/m3 (87) | 49.9 μg/m3 (137) | 137.0 | |
| July 28, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (78) | N/A | 141.0 μg/m3 (94) | 55.9 μg/m3 (152) | 152.0 | |
| July 28, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 64.0 ppb (81) | N/A | 159.0 μg/m3 (103) | 54.4 μg/m3 (148) | 148.0 | |
| July 28, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 ppb (71) | N/A | 137.0 μg/m3 (92) | 44.5 μg/m3 (124) | 124.0 | |
| July 28, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 ppb (65) | N/A | 125.0 μg/m3 (86) | 45.8 μg/m3 (127) | 127.0 | |
| July 28, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | 139.0 μg/m3 (93) | 44.8 μg/m3 (124) | 124.0 | |
| July 28, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (61) | N/A | 149.0 μg/m3 (98) | 49.8 μg/m3 (137) | 137.0 | |
| July 28, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (55) | N/A | 114.0 μg/m3 (81) | 41.5 μg/m3 (116) | 116.0 | |
| July 28, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | 129.0 μg/m3 (88) | 38.4 μg/m3 (109) | 109.0 | |
| July 28, 2021, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (48) | N/A | 145.0 μg/m3 (96) | 36.0 μg/m3 (103) | 103.0 | |
| July 28, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (40) | N/A | 147.0 μg/m3 (97) | 55.4 μg/m3 (150) | 150.0 | |
| July 28, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (37) | N/A | 140.0 μg/m3 (94) | 66.5 μg/m3 (157) | 157.0 | |
| July 28, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (34) | N/A | 62.0 μg/m3 (55) | 36.9 μg/m3 (105) | 105.0 | |
| July 28, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (35) | N/A | 55.0 μg/m3 (51) | 22.3 μg/m3 (73) | 73.0 | |
| July 28, 2021, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (38) | N/A | 82.0 μg/m3 (65) | 30.9 μg/m3 (91) | 91.0 | |
| July 28, 2021, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (38) | N/A | 94.0 μg/m3 (71) | 39.6 μg/m3 (112) | 112.0 | |
| July 28, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (44) | N/A | 36.0 μg/m3 (34) | 17.8 μg/m3 (63) | 63.0 | |
| July 28, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (50) | N/A | 45.0 μg/m3 (42) | 22.3 μg/m3 (73) | 73.0 | |
| July 28, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (50) | N/A | 52.0 μg/m3 (49) | 31.1 μg/m3 (91) | 91.0 | |
| July 28, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (58) | N/A | 71.0 μg/m3 (59) | 35.8 μg/m3 (102) | 102.0 | |
| July 28, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (78) | N/A | 102.0 μg/m3 (75) | 39.7 μg/m3 (112) | 112.0 | |
| July 28, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (78) | N/A | 157.0 μg/m3 (102) | 45.4 μg/m3 (126) | 126.0 | |
| July 28, 2021, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 65.0 ppb (84) | N/A | 126.0 μg/m3 (87) | 38.9 μg/m3 (110) | 110.0 | |
| July 28, 2021, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 72.0 ppb (102) | N/A | 102.0 μg/m3 (75) | 34.6 μg/m3 (99) | 102.0 | |
| July 27, 2021, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 73.0 ppb (103) | N/A | 164.0 μg/m3 (106) | 41.4 μg/m3 (116) | 116.0 | |
| July 27, 2021, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 72.0 ppb (102) | N/A | 123.0 μg/m3 (85) | 32.4 μg/m3 (94) | 102.0 | |
| July 27, 2021, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 72.0 ppb (102) | N/A | 101.0 μg/m3 (74) | 28.3 μg/m3 (86) | 102.0 |