AQSQID: 300930005

Site Name: Butte Greely School

Location: Butte-Silver Bow, MT

Reporting: True, Located: True

Current AQI: 6.0

Butte-Silver Bow MT, US: 46.002399, -112.500893

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 1.4 μg/m3 (6) 6.0
 
Sept. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 3.0
 
Sept. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 1.2 μg/m3 (5) 9.0
 
Sept. 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 2.2 μg/m3 (9) 9.0
 
Sept. 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 0.7 μg/m3 (3) 5.0
 
Sept. 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 1.5 μg/m3 (6) 10.0
 
Sept. 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) -0.3 μg/m3 (0) 10.0
 
Sept. 21, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) -0.3 μg/m3 (0) 9.0
 
Sept. 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 0.0 μg/m3 (0) 10.0
 
Sept. 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) -2.5 μg/m3 (0) 17.0
 
Sept. 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) -0.3 μg/m3 (0) 10.0
 
Sept. 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
Sept. 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -0.6 μg/m3 (0) N/A
Sept. 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) -0.1 μg/m3 (0) 6.0
 
Sept. 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) -0.3 μg/m3 (0) 7.0
 
Sept. 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 7.0
 
Sept. 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 2.2 μg/m3 (9) 9.0
 
Sept. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 0.2 μg/m3 (1) 5.0
 
Sept. 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 0.2 μg/m3 (1) 3.0
 
Sept. 20, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 9.0
 
Sept. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) -0.6 μg/m3 (0) 5.0
 
Sept. 20, 2019, 10 a.m. 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, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -1.6 μg/m3 (0) 4.0
 
Sept. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -1.1 μg/m3 (0) 5.0
 
Sept. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) -0.6 μg/m3 (0) 5.0
 
Sept. 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 3.0
 
Sept. 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 1.0 μg/m3 (4) 4.0
 
Sept. 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 0.3 μg/m3 (1) 4.0
 
Sept. 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -1.1 μg/m3 (0) 4.0
 
Sept. 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 1.3 μg/m3 (5) 5.0
 
Sept. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 0.3 μg/m3 (1) 5.0
 
Sept. 20, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) -0.6 μg/m3 (0) 5.0
 
Sept. 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 0.6 μg/m3 (2) 5.0
 
Sept. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 1.5 μg/m3 (6) 6.0
 
Sept. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 2.8 μg/m3 (12) 12.0
 
Sept. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -0.6 μg/m3 (0) 5.0
 
Sept. 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -2.3 μg/m3 (0) 4.0
 
Sept. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) -1.5 μg/m3 (0) 9.0
 
Sept. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) -0.8 μg/m3 (0) 10.0
 
Sept. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 0.5 μg/m3 (2) 4.0
 
Sept. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 3.0
 
Sept. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -1.8 μg/m3 (0) 4.0
 
Sept. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -1.8 μg/m3 (0) 4.0
 
Sept. 19, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 4.0
 
Sept. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) -0.4 μg/m3 (0) 1.0
 
Sept. 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) -1.3 μg/m3 (0) 3.0
 
Sept. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -0.1 μg/m3 (0) 5.0
 
Sept. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -0.4 μg/m3 (0) 4.0
 
Sept. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 8.0
 
Sept. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 8.0
 
Sept. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 1.1 μg/m3 (5) 5.0
 
Sept. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -0.6 μg/m3 (0) 5.0
 
Sept. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -2.0 μg/m3 (0) 5.0
 
Sept. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) -0.5 μg/m3 (0) 8.0
 
Sept. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 1.8 μg/m3 (8) 11.0
 
Sept. 19, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 7.6 μg/m3 (32) 32.0
 
Sept. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
Sept. 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) -1.3 μg/m3 (0) 6.0
 
Sept. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) -0.6 μg/m3 (0) 5.0
 
Sept. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 8.0
 
Sept. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 2.0 μg/m3 (8) 9.0
 
Sept. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 1.7 μg/m3 (7) 12.0
 
Sept. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 2.5 μg/m3 (10) 14.0
 
Sept. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 30.0 μg/m3 (27) 3.7 μg/m3 (15) 27.0
 
Sept. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (23) 1.9 μg/m3 (8) 23.0
 
Sept. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) -1.3 μg/m3 (0) 24.0
 
Sept. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) -3.5 μg/m3 (0) 6.0
 
Sept. 18, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -2.3 μg/m3 (0) 5.0
 
Sept. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) -0.6 μg/m3 (0) 3.0
 
Sept. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) -0.6 μg/m3 (0) 3.0
 
Sept. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) -0.1 μg/m3 (0) 1.0
 
Sept. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) -0.6 μg/m3 (0) N/A
Sept. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) -3.3 μg/m3 (0) 1.0
 
Sept. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) N/A 2.0
 
Sept. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -2.8 μg/m3 (0) 4.0
 
Sept. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) -0.8 μg/m3 (0) 5.0
 
Sept. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) -0.8 μg/m3 (0) 5.0
 
Sept. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 0.3 μg/m3 (1) 6.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) -0.4 μg/m3 (0) 6.0
 
Sept. 18, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 0.3 μg/m3 (1) 5.0
 
Sept. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 0.7 μg/m3 (3) 9.0
 
Sept. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 3.6 μg/m3 (15) 15.0
 
Sept. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 4.4 μg/m3 (18) 18.0
 
Sept. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) -0.6 μg/m3 (0) 15.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) -0.4 μg/m3 (0) 5.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) -1.3 μg/m3 (0) 8.0
 
Sept. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) -2.1 μg/m3 (0) 11.0
 
Sept. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (22) 0.0 μg/m3 (0) 22.0
 
Sept. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 1.2 μg/m3 (5) 11.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (29) 4.3 μg/m3 (18) 29.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 7.2 μg/m3 (30) 30.0
 
Sept. 17, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 9.9 μg/m3 (41) 41.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 7.7 μg/m3 (32) 32.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 4.8 μg/m3 (20) 20.0
 
Sept. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 7.7 μg/m3 (32) 32.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 8.2 μg/m3 (34) 34.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (22) 8.9 μg/m3 (37) 37.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 44.0 μg/m3 (40) 9.9 μg/m3 (41) 41.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 44.0 μg/m3 (40) 9.4 μg/m3 (39) 40.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 79.0 μg/m3 (62) 9.4 μg/m3 (39) 62.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 83.0 μg/m3 (64) 8.4 μg/m3 (35) 64.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 72.0 μg/m3 (58) 6.0 μg/m3 (25) 58.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 2.8 μg/m3 (12) 21.0
 
Sept. 17, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (23) 2.6 μg/m3 (11) 23.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (25) 5.2 μg/m3 (22) 25.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 37.0 μg/m3 (34) 7.4 μg/m3 (31) 34.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 43.0 μg/m3 (39) 7.2 μg/m3 (30) 39.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 38.0 μg/m3 (35) 4.5 μg/m3 (19) 35.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (28) 5.8 μg/m3 (24) 28.0
 
Sept. 16, 2019, 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
Sept. 16, 2019, 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
Sept. 16, 2019, 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
Sept. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 57.0 μg/m3 (51) 7.0 μg/m3 (29) 51.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 54.0 μg/m3 (49) 5.3 μg/m3 (22) 49.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (28) 2.4 μg/m3 (10) 28.0
 
Sept. 16, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 3.1 μg/m3 (13) 19.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 36.0 μg/m3 (33) 2.9 μg/m3 (12) 33.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 5.3 μg/m3 (22) 22.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 3.1 μg/m3 (13) 13.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 2.1 μg/m3 (9) 9.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 50.0 μg/m3 (45) 2.6 μg/m3 (11) 45.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 4.5 μg/m3 (19) 19.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 6.2 μg/m3 (26) 26.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 6.5 μg/m3 (27) 27.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 3.8 μg/m3 (16) 20.0
 
Sept. 16, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 1.6 μg/m3 (7) 15.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 3.3 μg/m3 (14) 19.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 1.4 μg/m3 (6) 17.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 0.0 μg/m3 (0) 15.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 1.1 μg/m3 (5) 17.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 4.3 μg/m3 (18) 18.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 37.0 μg/m3 (34) 9.4 μg/m3 (39) 39.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 53.0 μg/m3 (48) 9.1 μg/m3 (38) 48.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (28) 6.0 μg/m3 (25) 28.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 42.0 μg/m3 (38) 3.6 μg/m3 (15) 38.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 30.0 μg/m3 (27) -0.6 μg/m3 (0) 27.0
 
Sept. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) -2.6 μg/m3 (0) 17.0
 
Sept. 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 0.3 μg/m3 (1) 10.0
 
Sept. 15, 2019, 11 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. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 0.7 μg/m3 (3) 16.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.6 μg/m3 (19) 19.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (28) 7.2 μg/m3 (30) 30.0
 
Sept. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 5.5 μg/m3 (23) 24.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 5.8 μg/m3 (24) 25.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 30.0 μg/m3 (27) 6.7 μg/m3 (28) 28.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 5.8 μg/m3 (24) 24.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.0 μg/m3 (32) 4.1 μg/m3 (17) 32.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 42.0 μg/m3 (38) 4.6 μg/m3 (19) 38.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 14.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 1.1 μg/m3 (5) 8.0
 
Sept. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 2.4 μg/m3 (10) 10.0
 
Sept. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 3.1 μg/m3 (13) 13.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 3.3 μg/m3 (14) 14.0
 
Sept. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 0.7 μg/m3 (3) 8.0
 
Sept. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 17.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 10.1 μg/m3 (42) 42.0
 
Sept. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (28) 10.8 μg/m3 (45) 45.0
 
Sept. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 61.0 μg/m3 (53) 10.1 μg/m3 (42) 53.0
 
Sept. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 42.0 μg/m3 (38) 5.3 μg/m3 (22) 38.0
 
Sept. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 0.3 μg/m3 (1) 10.0
 
Sept. 14, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 1.7 μg/m3 (7) 12.0
 
Sept. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 4.3 μg/m3 (18) 18.0
 
Sept. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 3.1 μg/m3 (13) 13.0
 
Sept. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 2.9 μg/m3 (12) 12.0
 
Sept. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 3.8 μg/m3 (16) 16.0