ID: 1965

AQSQID: 300930005

Site Name: Butte Greely School

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

Updated: Sept. 22, 2021, 9:03 a.m.

Location: Butte (S Park Place), MT

Reporting: True, Located: True

Current AQI: 20.0

Butte (S Park Place) MT, US: 46.002399, -112.500893

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 4.8 μg/m3 (20) 20.0
 
Sept. 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) 6.1 μg/m3 (26) 26.0
 
Sept. 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 7.5 μg/m3 (32) 32.0
 
Sept. 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 7.7 μg/m3 (33) 33.0
 
Sept. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 7.0 μg/m3 (30) 30.0
 
Sept. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (9) 2.6 μg/m3 (11) 11.0
 
Sept. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 5.3 μg/m3 (23) 23.0
 
Sept. 22, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 8.7 μg/m3 (37) 37.0
 
Sept. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 5.3 μg/m3 (23) 23.0
 
Sept. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (17) 6.3 μg/m3 (27) 27.0
 
Sept. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 20.3 μg/m3 (69) 69.0
 
Sept. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 33.0 μg/m3 (31) 4.6 μg/m3 (20) 31.0
 
Sept. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (24) 10.4 μg/m3 (44) 44.0
 
Sept. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) 9.6 μg/m3 (40) 40.0
 
Sept. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (26) 7.5 μg/m3 (32) 32.0
 
Sept. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 91.0 μg/m3 (69) 32.5 μg/m3 (94) 94.0
 
Sept. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (29) 0.7 μg/m3 (3) 29.0
 
Sept. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 4.1 μg/m3 (18) 18.0
 
Sept. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 7.7 μg/m3 (33) 33.0
 
Sept. 21, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 2.6 μg/m3 (11) 11.0
 
Sept. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 1.4 μg/m3 (6) 6.0
 
Sept. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) 2.6 μg/m3 (11) 11.0
 
Sept. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 2.1 μg/m3 (9) 9.0
 
Sept. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 8.4 μg/m3 (36) 36.0
 
Sept. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 7.2 μg/m3 (31) 31.0
 
Sept. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) -2.1 μg/m3 (0) 6.0
 
Sept. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) N/A 7.0
 
Sept. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 15.6 μg/m3 (59) 59.0
 
Sept. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) -1.6 μg/m3 (0) 2.0
 
Sept. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 1.2 μg/m3 (5) 5.0
 
Sept. 21, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) 6.7 μg/m3 (28) 28.0
 
Sept. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (29) 6.5 μg/m3 (28) 29.0
 
Sept. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 41.0 μg/m3 (38) 21.0 μg/m3 (70) 70.0
 
Sept. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 4.3 μg/m3 (18) 18.0
 
Sept. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 3.6 μg/m3 (16) 16.0
 
Sept. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) 8.9 μg/m3 (38) 38.0
 
Sept. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 4.8 μg/m3 (20) 20.0
 
Sept. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 0.5 μg/m3 (3) 7.0
 
Sept. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) 5.3 μg/m3 (23) 23.0
 
Sept. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 9.9 μg/m3 (42) 42.0
 
Sept. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) 10.9 μg/m3 (46) 46.0
 
Sept. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 2.6 μg/m3 (11) 11.0
 
Sept. 20, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -2.8 μg/m3 (0) 5.0
 
Sept. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 14.9 μg/m3 (57) 57.0
 
Sept. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -1.9 μg/m3 (0) 4.0
 
Sept. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -3.3 μg/m3 (0) 5.0
 
Sept. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Sept. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 8.7 μg/m3 (37) 37.0
 
Sept. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 9.4 μg/m3 (40) 40.0
 
Sept. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 6.3 μg/m3 (27) 27.0
 
Sept. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 1.9 μg/m3 (8) 8.0
 
Sept. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 4.3 μg/m3 (18) 18.0
 
Sept. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 6.3 μg/m3 (27) 27.0
 
Sept. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -3.8 μg/m3 (0) 5.0
 
Sept. 20, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) -2.6 μg/m3 (0) 10.0
 
Sept. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) 3.1 μg/m3 (13) 13.0
 
Sept. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) 4.6 μg/m3 (20) 20.0
 
Sept. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 4.3 μg/m3 (18) 18.0
 
Sept. 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 6.7 μg/m3 (28) 28.0
 
Sept. 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 0.9 μg/m3 (4) 5.0
 
Sept. 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) N/A 5.0
 
Sept. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 1.2 μg/m3 (5) 5.0
 
Sept. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 8.2 μg/m3 (35) 35.0
 
Sept. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (26) 13.9 μg/m3 (55) 55.0
 
Sept. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 19.6 μg/m3 (67) 67.0
 
Sept. 19, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) 10.8 μg/m3 (46) 46.0
 
Sept. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 8.2 μg/m3 (35) 35.0
 
Sept. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 2.2 μg/m3 (10) 10.0
 
Sept. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 16.2 μg/m3 (60) 60.0
 
Sept. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 2.4 μg/m3 (10) 13.0
 
Sept. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 4.6 μg/m3 (20) 20.0
 
Sept. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 5.3 μg/m3 (23) 23.0
 
Sept. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 22.8 μg/m3 (74) 74.0
 
Sept. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 96.0 μg/m3 (72) 52.8 μg/m3 (144) 144.0
 
Sept. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 110.0 μg/m3 (79) 66.3 μg/m3 (157) 157.0
 
Sept. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 124.0 μg/m3 (86) 51.6 μg/m3 (141) 141.0
 
Sept. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 78.0 μg/m3 (63) 27.3 μg/m3 (83) 83.0
 
Sept. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 72.0 μg/m3 (60) 13.9 μg/m3 (55) 60.0
 
Sept. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 126.0 μg/m3 (87) 37.4 μg/m3 (106) 106.0
 
Sept. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 70.0 μg/m3 (59) 8.9 μg/m3 (38) 59.0
 
Sept. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 64.0 μg/m3 (56) 18.4 μg/m3 (65) 65.0
 
Sept. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 97.0 μg/m3 (72) 23.7 μg/m3 (76) 76.0
 
Sept. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 69.0 μg/m3 (58) 18.9 μg/m3 (66) 66.0
 
Sept. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 76.0 μg/m3 (62) 18.4 μg/m3 (65) 65.0
 
Sept. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 103.0 μg/m3 (75) 30.5 μg/m3 (90) 90.0
 
Sept. 18, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 146.0 μg/m3 (97) 35.9 μg/m3 (102) 102.0
 
Sept. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 196.0 μg/m3 (122) 75.5 μg/m3 (162) 162.0
 
Sept. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 199.0 μg/m3 (123) 88.4 μg/m3 (168) 168.0
 
Sept. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 176.0 μg/m3 (112) 95.2 μg/m3 (172) 172.0
 
Sept. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 229.0 μg/m3 (138) 124.1 μg/m3 (187) 187.0
 
Sept. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 167.0 μg/m3 (107) 117.9 μg/m3 (184) 184.0
 
Sept. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 159.0 μg/m3 (103) 114.7 μg/m3 (182) 182.0
 
Sept. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 132.0 μg/m3 (90) 88.2 μg/m3 (168) 168.0
 
Sept. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 128.0 μg/m3 (88) 97.1 μg/m3 (173) 173.0
 
Sept. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 134.0 μg/m3 (91) 74.2 μg/m3 (161) 161.0
 
Sept. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 159.0 μg/m3 (103) 109.8 μg/m3 (180) 180.0
 
Sept. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 180.0 μg/m3 (114) 127.6 μg/m3 (189) 189.0
 
Sept. 18, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 165.0 μg/m3 (106) 132.0 μg/m3 (191) 191.0
 
Sept. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 154.6 μg/m3 (206) 206.0
 
Sept. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Sept. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.0 μg/m3 (33) -2.4 μg/m3 (0) 33.0
 
Sept. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 37.0 μg/m3 (35) 22.5 μg/m3 (73) 73.0
 
Sept. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) 18.4 μg/m3 (65) 65.0
 
Sept. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 55.0 μg/m3 (51) 12.0 μg/m3 (50) 51.0
 
Sept. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 103.0 μg/m3 (75) 12.9 μg/m3 (53) 75.0
 
Sept. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 45.0 μg/m3 (42) 27.9 μg/m3 (85) 85.0
 
Sept. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 39.0 μg/m3 (37) 11.1 μg/m3 (47) 47.0
 
Sept. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 49.0 μg/m3 (46) 7.9 μg/m3 (33) 46.0
 
Sept. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 1.4 μg/m3 (6) 19.0
 
Sept. 17, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) -1.9 μg/m3 (0) 13.0
 
Sept. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (9) 0.9 μg/m3 (4) 9.0
 
Sept. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Sept. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) N/A 4.0
 
Sept. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 0.4 μg/m3 (2) 7.0
 
Sept. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) N/A 7.0
 
Sept. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) N/A 8.0
 
Sept. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) 0.4 μg/m3 (2) 13.0
 
Sept. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) -0.4 μg/m3 (0) 13.0
 
Sept. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 1.9 μg/m3 (8) 14.0
 
Sept. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) 0.9 μg/m3 (4) 25.0
 
Sept. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 0.0 μg/m3 (0) 13.0
 
Sept. 17, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 1.9 μg/m3 (8) 14.0
 
Sept. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (24) 0.7 μg/m3 (3) 24.0
 
Sept. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 30.0 μg/m3 (28) -1.6 μg/m3 (0) 28.0
 
Sept. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) 0.4 μg/m3 (2) 25.0
 
Sept. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) 0.0 μg/m3 (0) 23.0
 
Sept. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) -2.4 μg/m3 (0) 19.0
 
Sept. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (29) -1.9 μg/m3 (0) 29.0
 
Sept. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 0.5 μg/m3 (3) 15.0
 
Sept. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 3.6 μg/m3 (16) 25.0
 
Sept. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 39.0 μg/m3 (37) 3.8 μg/m3 (16) 37.0
 
Sept. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 48.0 μg/m3 (45) N/A 45.0
 
Sept. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) N/A 25.0
 
Sept. 16, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) N/A 14.0
 
Sept. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) -1.1 μg/m3 (0) 19.0
 
Sept. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) -1.1 μg/m3 (0) 23.0
 
Sept. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 5.3 μg/m3 (23) 23.0
 
Sept. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (27) 5.8 μg/m3 (25) 27.0
 
Sept. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) -0.4 μg/m3 (0) 7.0
 
Sept. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 4.3 μg/m3 (18) 18.0
 
Sept. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 7.2 μg/m3 (31) 31.0
 
Sept. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (24) -3.3 μg/m3 (0) 24.0
 
Sept. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 2.1 μg/m3 (9) 13.0
 
Sept. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 10.8 μg/m3 (46) 46.0
 
Sept. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) 7.2 μg/m3 (31) 31.0
 
Sept. 16, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (27) 7.9 μg/m3 (33) 33.0
 
Sept. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 4.8 μg/m3 (20) 25.0
 
Sept. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 0.2 μg/m3 (1) 15.0
 
Sept. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.0 μg/m3 (33) 4.1 μg/m3 (18) 33.0
 
Sept. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 33.0 μg/m3 (31) 10.8 μg/m3 (46) 46.0
 
Sept. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) 12.9 μg/m3 (53) 53.0
 
Sept. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (32) 4.3 μg/m3 (18) 32.0
 
Sept. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -4.5 μg/m3 (0) 0.0
Sept. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 50.0 μg/m3 (47) 17.8 μg/m3 (63) 63.0
 
Sept. 15, 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
Sept. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Sept. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 62.0 μg/m3 (55) 30.5 μg/m3 (90) 90.0
 
Sept. 15, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 46.0 μg/m3 (43) 24.9 μg/m3 (78) 78.0
 
Sept. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 44.0 μg/m3 (41) 11.1 μg/m3 (47) 47.0
 
Sept. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 50.0 μg/m3 (47) 45.3 μg/m3 (126) 126.0
 
Sept. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 48.0 μg/m3 (45) 18.4 μg/m3 (65) 65.0
 
Sept. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 76.0 μg/m3 (62) 15.6 μg/m3 (59) 62.0
 
Sept. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 3.9 μg/m3 (17) 21.0
 
Sept. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 7.0 μg/m3 (30) 30.0
 
Sept. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 7.0 μg/m3 (30) 30.0
 
Sept. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) 14.8 μg/m3 (57) 57.0