AQSQID: 300530018

Site Name: Libby Courthouse

Location: Libby, MT

Reporting: True, Located: True

Current AQI: 22.0

Libby MT, US: 48.3841, -115.548

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 26, 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) 5.2 μg/m3 (22) 22.0
 
May 26, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 6.5 μg/m3 (27) 27.0
 
May 26, 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) 3.1 μg/m3 (13) 13.0
 
May 26, 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) 3.8 μg/m3 (16) 16.0
 
May 26, 2019, midnight 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
 
May 25, 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) 4.2 μg/m3 (18) 18.0
 
May 25, 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) 6.3 μg/m3 (26) 26.0
 
May 25, 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) -1.3 μg/m3 (0) 5.0
 
May 25, 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) 1.9 μg/m3 (8) 8.0
 
May 25, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 4.5 μg/m3 (19) 19.0
 
May 25, 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) 1.8 μg/m3 (8) 8.0
 
May 25, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 4.4 μg/m3 (18) 18.0
 
May 25, 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) 4.3 μg/m3 (18) 18.0
 
May 25, 2019, 3 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
 
May 25, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 4.7 μg/m3 (20) 20.0
 
May 25, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 6.9 μg/m3 (29) 29.0
 
May 25, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 7.2 μg/m3 (30) 30.0
 
May 25, 2019, 11 a.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
 
May 25, 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) 5.2 μg/m3 (22) 22.0
 
May 25, 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) 7.0 μg/m3 (29) 29.0
 
May 25, 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) 6.1 μg/m3 (25) 25.0
 
May 25, 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) 10.8 μg/m3 (45) 45.0
 
May 25, 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) 7.6 μg/m3 (32) 32.0
 
May 25, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 6.6 μg/m3 (28) 28.0
 
May 25, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 3.5 μg/m3 (15) 15.0
 
May 25, 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) 5.6 μg/m3 (23) 23.0
 
May 25, 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) 6.9 μg/m3 (29) 29.0
 
May 25, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
May 25, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
May 24, 2019, 11 p.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
 
May 24, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 6.4 μg/m3 (27) 27.0
 
May 24, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 36.0 μg/m3 (33) 5.3 μg/m3 (22) 33.0
 
May 24, 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) 4.8 μg/m3 (20) 20.0
 
May 24, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 2.6 μg/m3 (11) 13.0
 
May 24, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 4.5 μg/m3 (19) 19.0
 
May 24, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 9.5 μg/m3 (40) 40.0
 
May 24, 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) 7.9 μg/m3 (33) 33.0
 
May 24, 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) 7.4 μg/m3 (31) 31.0
 
May 24, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 5.8 μg/m3 (24) 24.0
 
May 24, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 9.6 μg/m3 (40) 40.0
 
May 24, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 11.1 μg/m3 (46) 46.0
 
May 24, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
May 24, 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) 7.9 μg/m3 (33) 33.0
 
May 24, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
May 24, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 10.1 μg/m3 (42) 42.0
 
May 24, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 12.6 μg/m3 (51) 51.0
 
May 24, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 7.9 μg/m3 (33) 33.0
 
May 24, 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) 10.4 μg/m3 (43) 43.0
 
May 24, 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) 8.5 μg/m3 (35) 35.0
 
May 24, 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) 10.1 μg/m3 (42) 42.0
 
May 24, 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) 9.0 μg/m3 (38) 38.0
 
May 24, 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) 7.6 μg/m3 (32) 32.0
 
May 24, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 2.6 μg/m3 (11) 16.0
 
May 23, 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) 1.3 μg/m3 (5) 13.0
 
May 23, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 5.4 μg/m3 (23) 23.0
 
May 23, 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) 4.2 μg/m3 (18) 18.0
 
May 23, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 4.1 μg/m3 (17) 17.0
 
May 23, 2019, 7 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
 
May 23, 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) 2.1 μg/m3 (9) 10.0
 
May 23, 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) 2.8 μg/m3 (12) 12.0
 
May 23, 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) 1.0 μg/m3 (4) 7.0
 
May 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) -1.0 μg/m3 (0) 5.0
 
May 23, 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) 5.7 μg/m3 (24) 24.0
 
May 23, 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) 4.2 μg/m3 (18) 18.0
 
May 23, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
May 23, 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) 6.9 μg/m3 (29) 29.0
 
May 23, 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) 12.3 μg/m3 (51) 51.0
 
May 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 9.9 μg/m3 (41) 41.0
 
May 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 11.3 μg/m3 (47) 47.0
 
May 23, 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) 10.9 μg/m3 (45) 45.0
 
May 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 15.4 μg/m3 (57) 57.0
 
May 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 9.3 μg/m3 (39) 39.0
 
May 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 11.4 μg/m3 (48) 48.0
 
May 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 7.6 μg/m3 (32) 32.0
 
May 23, 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) 6.2 μg/m3 (26) 26.0
 
May 23, 2019, 1 a.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
 
May 23, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 4.1 μg/m3 (17) 17.0
 
May 22, 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) 2.6 μg/m3 (11) 11.0
 
May 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 5.2 μg/m3 (22) 22.0
 
May 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 5.5 μg/m3 (23) 23.0
 
May 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 2.2 μg/m3 (9) 14.0
 
May 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) -0.9 μg/m3 (0) 10.0
 
May 22, 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) 2.5 μg/m3 (10) 10.0
 
May 22, 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) -1.9 μg/m3 (0) 3.0
 
May 22, 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) -2.2 μg/m3 (0) 7.0
 
May 22, 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) -3.1 μg/m3 (0) 11.0
 
May 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 1.3 μg/m3 (5) 7.0
 
May 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 1.8 μg/m3 (8) 8.0
 
May 22, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 17.0
 
May 22, 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) 6.9 μg/m3 (29) 29.0
 
May 22, 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) 5.8 μg/m3 (24) 24.0
 
May 22, 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) 5.5 μg/m3 (23) 23.0
 
May 22, 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) 8.3 μg/m3 (35) 35.0
 
May 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 9.3 μg/m3 (39) 39.0
 
May 22, 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) 4.5 μg/m3 (19) 19.0
 
May 22, 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) 3.6 μg/m3 (15) 15.0
 
May 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 0.9 μg/m3 (4) 4.0
 
May 22, 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) 1.9 μg/m3 (8) 8.0
 
May 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 2.9 μg/m3 (12) 12.0
 
May 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 4.9 μg/m3 (20) 20.0
 
May 22, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 3.7 μg/m3 (15) 15.0
 
May 21, 2019, 11 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
 
May 21, 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) 2.5 μg/m3 (10) 10.0
 
May 21, 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) -0.3 μg/m3 (0) 5.0
 
May 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) -1.1 μg/m3 (0) N/A
May 21, 2019, 7 p.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 (0) 1.0
 
May 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 5.0
 
May 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 0.1 μg/m3 (0) 5.0
 
May 21, 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) 1.3 μg/m3 (5) 8.0
 
May 21, 2019, 3 p.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
 
May 21, 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) 3.9 μg/m3 (16) 16.0
 
May 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 3.4 μg/m3 (14) 14.0
 
May 21, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 6.8 μg/m3 (28) 28.0
 
May 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 6.3 μg/m3 (26) 26.0
 
May 21, 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) 5.0 μg/m3 (21) 21.0
 
May 21, 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) 7.5 μg/m3 (31) 31.0
 
May 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 3.9 μg/m3 (16) 16.0
 
May 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) -0.8 μg/m3 (0) 15.0
 
May 21, 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) 8.8 μg/m3 (37) 37.0
 
May 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 7.9 μg/m3 (33) 33.0
 
May 21, 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) 9.9 μg/m3 (41) 41.0
 
May 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 4.9 μg/m3 (20) 20.0
 
May 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 6.5 μg/m3 (27) 27.0
 
May 21, 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) 2.8 μg/m3 (12) 12.0
 
May 21, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 2.4 μg/m3 (10) 10.0
 
May 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 1.6 μg/m3 (7) 7.0
 
May 20, 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) 2.2 μg/m3 (9) 9.0
 
May 20, 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) 1.8 μg/m3 (8) 8.0
 
May 20, 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) 2.8 μg/m3 (12) 12.0
 
May 20, 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) 0.4 μg/m3 (2) 9.0
 
May 20, 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) 2.2 μg/m3 (9) 12.0
 
May 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 3.8 μg/m3 (16) 16.0
 
May 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 1.4 μg/m3 (6) 6.0
 
May 20, 2019, 3 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
 
May 20, 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) 1.5 μg/m3 (6) 6.0
 
May 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) 1.3 μg/m3 (5) 5.0
 
May 20, 2019, noon 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
 
May 20, 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) 7.3 μg/m3 (30) 30.0
 
May 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 6.1 μg/m3 (25) 25.0
 
May 20, 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) 7.1 μg/m3 (30) 30.0
 
May 20, 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) 8.4 μg/m3 (35) 35.0
 
May 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 11.6 μg/m3 (48) 48.0
 
May 20, 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) 8.9 μg/m3 (37) 37.0
 
May 20, 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) 13.3 μg/m3 (53) 53.0
 
May 20, 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) 8.0 μg/m3 (33) 33.0
 
May 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 10.1 μg/m3 (42) 42.0
 
May 20, 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) 4.0 μg/m3 (17) 17.0
 
May 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 2.6 μg/m3 (11) 11.0
 
May 20, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 1.5 μg/m3 (6) 6.0
 
May 19, 2019, 11 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 (0) 3.0
 
May 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 0.9 μg/m3 (4) 4.0
 
May 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 2.2 μg/m3 (9) 9.0
 
May 19, 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) 2.9 μg/m3 (12) 12.0
 
May 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 0.9 μg/m3 (4) 4.0
 
May 19, 2019, 6 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
May 19, 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) -0.5 μg/m3 (0) 1.0
 
May 19, 2019, 4 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
 
May 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -4.9 μg/m3 (0) 5.0
 
May 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 5.4 μg/m3 (23) 23.0
 
May 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 3.1 μg/m3 (13) 13.0
 
May 19, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 6.2 μg/m3 (26) 26.0
 
May 19, 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) 1.7 μg/m3 (7) 7.0
 
May 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 4.1 μg/m3 (17) 17.0
 
May 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 4.0 μg/m3 (17) 17.0
 
May 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 4.8 μg/m3 (20) 20.0
 
May 19, 2019, 7 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 (2) 2.0
 
May 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) 8.5 μg/m3 (35) 35.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 5.3 μg/m3 (22) 22.0