ID: 2424

AQSQID: 300270006

Site Name: Lewistown

Added: April 21, 2020, 6:24 p.m.

Updated: July 28, 2021, 6:55 p.m.

Location: Lewistown (E Aztec Dr), MT

Reporting: True, Located: True

Current AQI: 68.0

Lewistown (E Aztec Dr) MT, US: 47.048537, -109.455315

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 28, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 43.0 μg/m3 (40) 19.8 μg/m3 (68) 68.0
 
July 28, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 44.0 μg/m3 (41) 19.3 μg/m3 (67) 67.0
 
July 28, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 36.0 μg/m3 (34) 22.0 μg/m3 (72) 72.0
 
July 28, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 33.0 μg/m3 (31) 27.5 μg/m3 (84) 84.0
 
July 28, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 43.0 μg/m3 (40) 31.9 μg/m3 (93) 93.0
 
July 28, 2021, noon N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 47.0 μg/m3 (44) 33.8 μg/m3 (97) 97.0
 
July 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 44.0 μg/m3 (41) 35.2 μg/m3 (100) 100.0
 
July 28, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 54.0 μg/m3 (50) 36.8 μg/m3 (105) 105.0
 
July 28, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 51.0 μg/m3 (48) 36.0 μg/m3 (103) 103.0
 
July 28, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 54.0 μg/m3 (50) 34.3 μg/m3 (98) 98.0
 
July 28, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A 49.0 μg/m3 (46) 31.3 μg/m3 (92) 92.0
 
July 28, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A 60.0 μg/m3 (54) 35.1 μg/m3 (100) 100.0
 
July 28, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 66.0 μg/m3 (57) 39.5 μg/m3 (111) 111.0
 
July 28, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 85.0 μg/m3 (66) 44.6 μg/m3 (124) 124.0
 
July 28, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 78.0 μg/m3 (63) 41.8 μg/m3 (117) 117.0
 
July 28, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A 71.0 μg/m3 (59) 40.1 μg/m3 (113) 113.0
 
July 28, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A 66.0 μg/m3 (57) 36.5 μg/m3 (104) 104.0
 
July 28, 2021, midnight N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A 76.0 μg/m3 (62) 43.4 μg/m3 (121) 121.0
 
July 27, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (100) N/A 75.0 μg/m3 (61) 51.1 μg/m3 (140) 140.0
 
July 27, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 73.0 ppb (103) N/A 57.0 μg/m3 (52) 44.1 μg/m3 (123) 123.0
 
July 27, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 74.0 ppb (103) N/A 61.0 μg/m3 (54) 43.4 μg/m3 (121) 121.0
 
July 27, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 72.0 ppb (102) N/A 62.0 μg/m3 (55) 44.0 μg/m3 (122) 122.0
 
July 27, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 71.0 ppb (101) N/A 68.0 μg/m3 (58) 50.1 μg/m3 (137) 137.0
 
July 27, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 73.0 ppb (103) N/A 72.0 μg/m3 (60) 45.6 μg/m3 (126) 126.0
 
July 27, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A 67.0 μg/m3 (57) 42.9 μg/m3 (120) 120.0
 
July 27, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A 54.0 μg/m3 (50) 39.7 μg/m3 (112) 112.0
 
July 27, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 60.0 μg/m3 (54) 41.0 μg/m3 (115) 115.0
 
July 27, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 69.0 μg/m3 (58) 42.3 μg/m3 (118) 118.0
 
July 27, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 62.0 μg/m3 (55) 40.8 μg/m3 (115) 115.0
 
July 27, 2021, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 45.0 μg/m3 (42) 33.4 μg/m3 (96) 96.0
 
July 27, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 40.0 μg/m3 (38) 35.6 μg/m3 (102) 102.0
 
July 27, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 44.0 μg/m3 (41) 32.1 μg/m3 (94) 94.0
 
July 27, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 43.0 μg/m3 (40) 37.2 μg/m3 (106) 106.0
 
July 27, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 47.0 μg/m3 (44) 34.5 μg/m3 (99) 99.0
 
July 27, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 44.0 μg/m3 (41) 33.5 μg/m3 (97) 97.0
 
July 27, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 37.0 μg/m3 (35) 27.1 μg/m3 (83) 83.0
 
July 27, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 43.0 μg/m3 (40) 28.0 μg/m3 (85) 85.0
 
July 27, 2021, 4 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) 33.6 μg/m3 (97) 97.0
 
July 27, 2021, 3 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) 39.1 μg/m3 (110) 110.0
 
July 27, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 68.0 μg/m3 (58) 35.0 μg/m3 (100) 100.0
 
July 27, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A 62.0 μg/m3 (55) 38.0 μg/m3 (108) 108.0
 
July 27, 2021, midnight N/A N/A N/A N/A N/A N/A 72.0 ppb (102) N/A 56.0 μg/m3 (52) 33.5 μg/m3 (97) 102.0
 
July 26, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 71.0 ppb (101) N/A 41.0 μg/m3 (38) 30.7 μg/m3 (91) 101.0
 
July 26, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A 44.0 μg/m3 (41) 29.0 μg/m3 (87) 97.0
 
July 26, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A 46.0 μg/m3 (43) 32.8 μg/m3 (95) 95.0
 
July 26, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A 39.0 μg/m3 (37) 35.3 μg/m3 (100) 100.0
 
July 26, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A 49.0 μg/m3 (46) 40.4 μg/m3 (114) 114.0
 
July 26, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A 61.0 μg/m3 (54) 52.6 μg/m3 (144) 144.0
 
July 26, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A 80.0 μg/m3 (64) 58.1 μg/m3 (153) 153.0
 
July 26, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A 67.0 μg/m3 (57) 58.5 μg/m3 (153) 153.0
 
July 26, 2021, 3 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) 37.7 μg/m3 (107) 107.0
 
July 26, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 65.0 μg/m3 (56) 39.1 μg/m3 (110) 110.0
 
July 26, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 54.0 μg/m3 (50) 40.0 μg/m3 (113) 113.0
 
July 26, 2021, noon N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 45.0 μg/m3 (42) 35.2 μg/m3 (100) 100.0
 
July 26, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 45.0 μg/m3 (42) 34.6 μg/m3 (99) 99.0
 
July 26, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 43.0 μg/m3 (40) 33.3 μg/m3 (96) 96.0
 
July 26, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 49.0 μg/m3 (46) 37.5 μg/m3 (106) 106.0
 
July 26, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 53.0 μg/m3 (50) 40.5 μg/m3 (114) 114.0
 
July 26, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 57.0 μg/m3 (52) 42.6 μg/m3 (119) 119.0
 
July 26, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 56.0 μg/m3 (52) 36.2 μg/m3 (103) 103.0
 
July 26, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 51.0 μg/m3 (48) 39.2 μg/m3 (111) 111.0
 
July 26, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 65.0 μg/m3 (56) 41.6 μg/m3 (117) 117.0
 
July 26, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 75.0 μg/m3 (61) 43.0 μg/m3 (120) 120.0
 
July 26, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 73.0 μg/m3 (60) 41.3 μg/m3 (116) 116.0
 
July 26, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 62.0 μg/m3 (55) 39.8 μg/m3 (112) 112.0
 
July 26, 2021, midnight N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A 63.0 μg/m3 (55) 41.1 μg/m3 (115) 115.0
 
July 25, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A 79.0 μg/m3 (63) 35.6 μg/m3 (102) 102.0
 
July 25, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 66.0 μg/m3 (57) 34.1 μg/m3 (98) 98.0
 
July 25, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 42.0 μg/m3 (39) 29.9 μg/m3 (89) 89.0
 
July 25, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 33.0 μg/m3 (31) 25.0 μg/m3 (79) 79.0
 
July 25, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 31.0 μg/m3 (29) 24.0 μg/m3 (77) 77.0
 
July 25, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 36.0 μg/m3 (34) 27.0 μg/m3 (83) 83.0
 
July 25, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 35.0 μg/m3 (33) 24.4 μg/m3 (77) 77.0
 
July 25, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 45.0 μg/m3 (42) 21.6 μg/m3 (71) 71.0
 
July 25, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 38.0 μg/m3 (36) 24.1 μg/m3 (77) 77.0
 
July 25, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 25.0 μg/m3 (24) 24.3 μg/m3 (77) 77.0
 
July 25, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 7.0 μg/m3 (7) 22.9 μg/m3 (74) 74.0
 
July 25, 2021, noon N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 27.0 μg/m3 (25) 23.9 μg/m3 (76) 76.0
 
July 25, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 30.0 μg/m3 (28) 20.7 μg/m3 (70) 70.0
 
July 25, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 42.0 μg/m3 (39) 22.3 μg/m3 (73) 73.0
 
July 25, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 51.0 μg/m3 (48) 22.3 μg/m3 (73) 73.0
 
July 25, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 27.0 μg/m3 (25) 22.9 μg/m3 (74) 74.0
 
July 25, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 32.0 μg/m3 (30) 26.3 μg/m3 (81) 81.0
 
July 25, 2021, 6 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) 20.5 μg/m3 (69) 69.0
 
July 25, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 41.0 μg/m3 (38) 19.6 μg/m3 (67) 67.0
 
July 25, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 44.0 μg/m3 (41) 22.1 μg/m3 (73) 73.0
 
July 25, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 42.0 μg/m3 (39) 18.9 μg/m3 (66) 66.0
 
July 25, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 39.0 μg/m3 (37) 18.1 μg/m3 (64) 64.0
 
July 25, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 35.0 μg/m3 (33) 19.3 μg/m3 (67) 71.0
 
July 25, 2021, midnight N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 34.0 μg/m3 (32) 17.2 μg/m3 (62) 71.0
 
July 24, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A 28.0 μg/m3 (26) 21.5 μg/m3 (71) 74.0
 
July 24, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A 23.0 μg/m3 (22) 19.0 μg/m3 (66) 68.0
 
July 24, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 25.0 μg/m3 (24) 18.7 μg/m3 (65) 65.0
 
July 24, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 24.0 μg/m3 (23) 16.5 μg/m3 (61) 61.0
 
July 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 20.0 μg/m3 (19) 14.0 μg/m3 (55) 55.0
 
July 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 28.0 μg/m3 (26) 15.4 μg/m3 (58) 58.0
 
July 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 27.0 μg/m3 (25) 19.8 μg/m3 (68) 68.0
 
July 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 23.0 μg/m3 (22) 17.9 μg/m3 (64) 64.0
 
July 24, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 6.0 μg/m3 (6) 20.1 μg/m3 (68) 68.0
 
July 24, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 16.0 μg/m3 (15) 18.7 μg/m3 (65) 65.0
 
July 24, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 19.0 μg/m3 (18) 20.3 μg/m3 (69) 69.0
 
July 24, 2021, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 28.0 μg/m3 (26) 21.2 μg/m3 (71) 71.0
 
July 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 31.0 μg/m3 (29) 22.8 μg/m3 (74) 74.0
 
July 24, 2021, 10 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) 23.8 μg/m3 (76) 76.0
 
July 24, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 23.0 μg/m3 (22) 19.3 μg/m3 (67) 67.0
 
July 24, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 29.0 μg/m3 (27) 19.2 μg/m3 (66) 66.0
 
July 24, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 39.0 μg/m3 (37) 22.2 μg/m3 (73) 73.0
 
July 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 27.0 μg/m3 (25) 14.9 μg/m3 (57) 57.0
 
July 24, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 30.0 μg/m3 (28) 15.2 μg/m3 (58) 58.0
 
July 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 45.0 μg/m3 (42) 19.9 μg/m3 (68) 68.0
 
July 24, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 37.0 μg/m3 (35) 17.7 μg/m3 (63) 63.0
 
July 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 36.0 μg/m3 (34) 18.4 μg/m3 (65) 65.0
 
July 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 53.0 μg/m3 (50) 32.7 μg/m3 (95) 95.0
 
July 24, 2021, midnight N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 41.0 μg/m3 (38) 28.8 μg/m3 (87) 87.0
 
July 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 31.0 μg/m3 (29) 22.1 μg/m3 (73) 73.0
 
July 23, 2021, 10 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) 21.2 μg/m3 (71) 71.0
 
July 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 32.0 μg/m3 (30) 25.1 μg/m3 (79) 79.0
 
July 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 34.0 μg/m3 (32) 29.3 μg/m3 (88) 88.0
 
July 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 27.0 μg/m3 (25) 22.7 μg/m3 (74) 74.0
 
July 23, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 24.0 μg/m3 (23) 16.2 μg/m3 (60) 60.0
 
July 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 17.0 μg/m3 (16) 12.4 μg/m3 (52) 52.0
 
July 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 16.0 μg/m3 (15) 12.7 μg/m3 (53) 53.0
 
July 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 23.0 μg/m3 (22) 13.4 μg/m3 (54) 54.0
 
July 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 9.0 μg/m3 (9) 7.8 μg/m3 (33) 36.0
 
July 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 12.0 μg/m3 (12) 8.6 μg/m3 (36) 36.0
 
July 23, 2021, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 19.0 μg/m3 (18) 6.9 μg/m3 (29) 29.0
 
July 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 15.0 μg/m3 (14) 11.7 μg/m3 (49) 49.0
 
July 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 14.0 μg/m3 (13) 14.0 μg/m3 (55) 55.0
 
July 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 21.0 μg/m3 (20) 12.9 μg/m3 (53) 53.0
 
July 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 28.0 μg/m3 (26) 13.9 μg/m3 (55) 55.0
 
July 23, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 34.0 μg/m3 (32) 22.3 μg/m3 (73) 73.0
 
July 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 38.0 μg/m3 (36) 17.9 μg/m3 (64) 64.0
 
July 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 35.0 μg/m3 (33) 20.7 μg/m3 (70) 70.0
 
July 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 22.0 μg/m3 (21) 18.3 μg/m3 (65) 65.0
 
July 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 26.0 μg/m3 (25) 12.6 μg/m3 (53) 53.0
 
July 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 22.0 μg/m3 (21) 13.0 μg/m3 (53) 53.0
 
July 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 16.0 μg/m3 (15) 13.5 μg/m3 (54) 54.0
 
July 23, 2021, midnight N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 30.0 μg/m3 (28) 16.4 μg/m3 (61) 71.0
 
July 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 32.0 μg/m3 (30) 18.8 μg/m3 (66) 71.0
 
July 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A 35.0 μg/m3 (33) 14.1 μg/m3 (56) 84.0
 
July 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A 34.0 μg/m3 (32) 10.9 μg/m3 (46) 91.0
 
July 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A 31.0 μg/m3 (29) 13.2 μg/m3 (54) 94.0
 
July 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A 19.0 μg/m3 (18) 13.3 μg/m3 (54) 94.0
 
July 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A 24.0 μg/m3 (23) 15.3 μg/m3 (58) 94.0
 
July 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A 28.0 μg/m3 (26) 16.0 μg/m3 (60) 78.0
 
July 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 10.0 μg/m3 (10) 13.1 μg/m3 (54) 54.0
 
July 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 16.0 μg/m3 (15) 12.7 μg/m3 (53) 53.0
 
July 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 19.0 μg/m3 (18) 13.8 μg/m3 (55) 55.0
 
July 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 19.0 μg/m3 (18) 12.4 μg/m3 (52) 52.0
 
July 22, 2021, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 20.0 μg/m3 (19) 14.3 μg/m3 (56) 56.0
 
July 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 20.0 μg/m3 (19) 14.3 μg/m3 (56) 56.0
 
July 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 26.0 μg/m3 (25) 13.0 μg/m3 (53) 53.0
 
July 22, 2021, 9 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) 15.8 μg/m3 (59) 59.0
 
July 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 24.0 μg/m3 (23) 8.1 μg/m3 (34) 34.0
 
July 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 29.0 μg/m3 (27) 6.0 μg/m3 (25) 32.0
 
July 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 20.0 μg/m3 (19) 14.9 μg/m3 (57) 57.0
 
July 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 18.0 μg/m3 (17) 14.0 μg/m3 (55) 55.0
 
July 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 13.0 μg/m3 (13) 20.0 μg/m3 (68) 68.0
 
July 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 30.0 μg/m3 (28) 23.3 μg/m3 (75) 75.0
 
July 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 32.0 μg/m3 (30) 13.3 μg/m3 (54) 65.0
 
July 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 36.0 μg/m3 (34) 14.8 μg/m3 (57) 71.0
 
July 22, 2021, midnight N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 13.0 μg/m3 (13) 24.1 μg/m3 (77) 77.0
 
July 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 26.0 μg/m3 (25) 22.4 μg/m3 (73) 73.0
 
July 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A 27.0 μg/m3 (25) 24.1 μg/m3 (77) 77.0
 
July 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A 36.0 μg/m3 (34) 21.9 μg/m3 (72) 78.0
 
July 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A 28.0 μg/m3 (26) 25.4 μg/m3 (79) 79.0
 
July 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A 32.0 μg/m3 (30) 24.3 μg/m3 (77) 78.0
 
July 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A 39.0 μg/m3 (37) 19.0 μg/m3 (66) 81.0