AQSQID: 300530018

Site Name: Libby Courthouse

Location: Libby, MT

Reporting: True, Located: True

Current AQI: 10.0

Libby MT, US: 48.3841, -115.548

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 2.5 μg/m3 (10) 10.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 4.9 μg/m3 (20) 20.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 0.4 μg/m3 (2) 15.0
 
Sept. 17, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) -3.0 μg/m3 (0) 14.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) N/A 13.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 0.5 μg/m3 (2) 10.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -2.2 μg/m3 (0) 5.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) -2.1 μg/m3 (0) 3.0
 
Sept. 16, 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) -0.6 μg/m3 (0) 4.0
 
Sept. 16, 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) -2.3 μg/m3 (0) 5.0
 
Sept. 16, 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) 2.5 μg/m3 (10) 10.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 2.5 μg/m3 (10) 10.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) N/A 10.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 8.8 μg/m3 (37) 37.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 7.6 μg/m3 (32) 32.0
 
Sept. 16, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 11.2 μg/m3 (47) 47.0
 
Sept. 16, 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) 8.5 μg/m3 (35) 35.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 10.4 μg/m3 (43) 43.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 10.7 μg/m3 (45) 45.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 9.7 μg/m3 (40) 40.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 9.5 μg/m3 (40) 40.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 15.0 μg/m3 (56) 56.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 12.1 μg/m3 (50) 50.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 15.2 μg/m3 (57) 57.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (28) 14.6 μg/m3 (56) 56.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.0 μg/m3 (32) 11.5 μg/m3 (48) 48.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 10.7 μg/m3 (45) 45.0
 
Sept. 16, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 1.6 μg/m3 (7) 11.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) -3.0 μg/m3 (0) 7.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 0.9 μg/m3 (4) 4.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) -3.4 μg/m3 (0) 1.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 2.1 μg/m3 (9) 9.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) -0.1 μg/m3 (0) N/A
Sept. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 1.5 μg/m3 (6) 6.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 2.9 μg/m3 (12) 12.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 6.7 μg/m3 (28) 28.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 10.9 μg/m3 (45) 45.0
 
Sept. 15, 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) 5.3 μg/m3 (22) 22.0
 
Sept. 15, 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) 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 6.1 μg/m3 (25) 25.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 4.4 μg/m3 (18) 18.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 8.5 μg/m3 (35) 35.0
 
Sept. 15, 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) 7.6 μg/m3 (32) 32.0
 
Sept. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 4.4 μg/m3 (18) 18.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 7.5 μg/m3 (31) 31.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 9.6 μg/m3 (40) 40.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 13.0 μg/m3 (52) 52.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 10.1 μg/m3 (42) 42.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 4.8 μg/m3 (20) 20.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 5.5 μg/m3 (23) 23.0
 
Sept. 15, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 1.3 μg/m3 (5) 5.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) -3.9 μg/m3 (0) 12.0
 
Sept. 14, 2019, 10 p.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. 14, 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) -1.6 μg/m3 (0) 5.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 7 p.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 (7) 7.0
 
Sept. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) -0.2 μg/m3 (0) 10.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 5.6 μg/m3 (23) 23.0
 
Sept. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 5.7 μg/m3 (24) 24.0
 
Sept. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 6.5 μg/m3 (27) 27.0
 
Sept. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 6.1 μg/m3 (25) 25.0
 
Sept. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 6.2 μg/m3 (26) 26.0
 
Sept. 14, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 7.4 μg/m3 (31) 31.0
 
Sept. 14, 2019, 11 a.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. 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) 7.5 μg/m3 (31) 31.0
 
Sept. 14, 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) 9.2 μg/m3 (38) 38.0
 
Sept. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
Sept. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 8.5 μg/m3 (35) 35.0
 
Sept. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 8.8 μg/m3 (37) 37.0
 
Sept. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (22) 12.7 μg/m3 (51) 51.0
 
Sept. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (22) 6.3 μg/m3 (26) 26.0
 
Sept. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 33.0 μg/m3 (30) 9.2 μg/m3 (38) 38.0
 
Sept. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 3.9 μg/m3 (16) 25.0
 
Sept. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 4.5 μg/m3 (19) 19.0
 
Sept. 14, 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 (0) 7.0
 
Sept. 13, 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) -3.4 μg/m3 (0) 10.0
 
Sept. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -0.7 μg/m3 (0) 4.0
 
Sept. 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 0.2 μg/m3 (1) 8.0
 
Sept. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 0.6 μg/m3 (2) 8.0
 
Sept. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Sept. 13, 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) 3.4 μg/m3 (14) 14.0
 
Sept. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 9.1 μg/m3 (38) 38.0
 
Sept. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 4.7 μg/m3 (20) 20.0
 
Sept. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 6.5 μg/m3 (27) 27.0
 
Sept. 13, 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) 6.8 μg/m3 (28) 28.0
 
Sept. 13, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 5.8 μg/m3 (24) 24.0
 
Sept. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 6.6 μg/m3 (28) 28.0
 
Sept. 13, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
Sept. 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 9.4 μg/m3 (39) 39.0
 
Sept. 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 11.5 μg/m3 (48) 48.0
 
Sept. 13, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 9.7 μg/m3 (40) 40.0
 
Sept. 13, 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) 9.7 μg/m3 (40) 40.0
 
Sept. 13, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 9.2 μg/m3 (38) 38.0
 
Sept. 13, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (28) 10.5 μg/m3 (44) 44.0
 
Sept. 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 9.9 μg/m3 (41) 41.0
 
Sept. 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 0.6 μg/m3 (2) 14.0
 
Sept. 13, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 2.1 μg/m3 (9) 9.0
 
Sept. 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) N/A 6.0
 
Sept. 12, 2019, 10 p.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. 12, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) -1.4 μg/m3 (0) 3.0
 
Sept. 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) -2.2 μg/m3 (0) 8.0
 
Sept. 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 2.6 μg/m3 (11) 11.0
 
Sept. 12, 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) 0.5 μg/m3 (2) 8.0
 
Sept. 12, 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) 6.4 μg/m3 (27) 27.0
 
Sept. 12, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 7.7 μg/m3 (32) 32.0
 
Sept. 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (31) 10.6 μg/m3 (44) 44.0
 
Sept. 12, 2019, 2 p.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. 12, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
Sept. 12, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 5.3 μg/m3 (22) 22.0
 
Sept. 12, 2019, 11 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. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 4.2 μg/m3 (18) 18.0
 
Sept. 12, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 10.6 μg/m3 (44) 44.0
 
Sept. 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 10.4 μg/m3 (43) 43.0
 
Sept. 12, 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) 16.0 μg/m3 (59) 59.0
 
Sept. 12, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 7.7 μg/m3 (32) 32.0
 
Sept. 12, 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) 7.2 μg/m3 (30) 30.0
 
Sept. 12, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 9.3 μg/m3 (39) 39.0
 
Sept. 12, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 4.9 μg/m3 (20) 20.0
 
Sept. 12, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 3.9 μg/m3 (16) 16.0
 
Sept. 12, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) N/A 9.0
 
Sept. 11, 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) -2.5 μg/m3 (0) 9.0
 
Sept. 11, 2019, 10 p.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. 11, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) -1.0 μg/m3 (0) 3.0
 
Sept. 11, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) N/A N/A
Sept. 11, 2019, 7 p.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. 11, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 1.4 μg/m3 (6) 6.0
 
Sept. 11, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) -0.9 μg/m3 (0) 3.0
 
Sept. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 3.8 μg/m3 (16) 16.0
 
Sept. 11, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 3.5 μg/m3 (15) 15.0
 
Sept. 11, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 3.2 μg/m3 (13) 13.0
 
Sept. 11, 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) 6.6 μg/m3 (28) 28.0
 
Sept. 11, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 20.0
 
Sept. 11, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 4.7 μg/m3 (20) 20.0
 
Sept. 11, 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) 5.8 μg/m3 (24) 24.0
 
Sept. 11, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 5.1 μg/m3 (21) 21.0
 
Sept. 11, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 8.1 μg/m3 (34) 34.0
 
Sept. 11, 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) 9.6 μg/m3 (40) 40.0
 
Sept. 11, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 5.6 μg/m3 (23) 23.0
 
Sept. 11, 2019, 5 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. 11, 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) 5.6 μg/m3 (23) 23.0
 
Sept. 11, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 4.6 μg/m3 (19) 19.0
 
Sept. 11, 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) 3.7 μg/m3 (15) 15.0
 
Sept. 11, 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) 2.3 μg/m3 (10) 10.0
 
Sept. 11, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) -0.3 μg/m3 (0) 3.0
 
Sept. 10, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) -3.7 μg/m3 (0) N/A
Sept. 10, 2019, 10 p.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. 10, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) -3.2 μg/m3 (0) 3.0
 
Sept. 10, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) -2.3 μg/m3 (0) N/A
Sept. 10, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) -0.2 μg/m3 (0) N/A
Sept. 10, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 1.9 μg/m3 (8) 8.0
 
Sept. 10, 2019, 5 p.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. 10, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 0.9 μg/m3 (4) 6.0
 
Sept. 10, 2019, 3 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 (3) 10.0
 
Sept. 10, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 1.5 μg/m3 (6) 6.0
 
Sept. 10, 2019, 1 p.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 (16) 16.0
 
Sept. 10, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 3.4 μg/m3 (14) 14.0
 
Sept. 10, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 3.7 μg/m3 (15) 15.0
 
Sept. 10, 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) 1.5 μg/m3 (6) 6.0
 
Sept. 10, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 6.2 μg/m3 (26) 26.0
 
Sept. 10, 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) 5.5 μg/m3 (23) 23.0
 
Sept. 10, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 1.0 μg/m3 (4) 12.0
 
Sept. 10, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 4.9 μg/m3 (20) 20.0
 
Sept. 10, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 2.6 μg/m3 (11) 11.0
 
Sept. 10, 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) 6.3 μg/m3 (26) 26.0