ID: 1456

AQSQID: 300530018

Site Name: Libby Courthouse

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

Updated: Sept. 21, 2021, 5:59 p.m.

Location: Libby (Minnesota Ave), MT

Reporting: True, Located: True

Current AQI: 56.0

Libby (Minnesota Ave) MT, US: 48.3841, -115.548

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 14.2 μg/m3 (56) 56.0
 
Sept. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 29.5 μg/m3 (88) 88.0
 
Sept. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 3.0 μg/m3 (13) 13.0
 
Sept. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 4.8 μg/m3 (20) 20.0
 
Sept. 21, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 4.7 μg/m3 (20) 20.0
 
Sept. 21, 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) 9.3 μg/m3 (39) 39.0
 
Sept. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) 4.7 μg/m3 (20) 20.0
 
Sept. 21, 2021, 9 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. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 4.5 μg/m3 (19) 19.0
 
Sept. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) N/A 15.0
 
Sept. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 5.4 μg/m3 (23) 23.0
 
Sept. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 10.8 μg/m3 (46) 46.0
 
Sept. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 2.0 μg/m3 (9) 11.0
 
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) 2.3 μg/m3 (10) 10.0
 
Sept. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 3.4 μg/m3 (15) 15.0
 
Sept. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) -1.2 μg/m3 (0) 6.0
 
Sept. 21, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) N/A 1.0
 
Sept. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) N/A 3.0
 
Sept. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) -0.1 μg/m3 (0) 2.0
 
Sept. 20, 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) 0.9 μg/m3 (4) 6.0
 
Sept. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 1.0 μg/m3 (5) 6.0
 
Sept. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (9) 4.3 μg/m3 (18) 18.0
 
Sept. 20, 2021, 5 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. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) -1.8 μg/m3 (0) 6.0
 
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) 2.4 μg/m3 (10) 14.0
 
Sept. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 5.9 μg/m3 (25) 25.0
 
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) 2.5 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 8.0 μg/m3 (8) 0.5 μg/m3 (3) 8.0
 
Sept. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 5.8 μg/m3 (25) 25.0
 
Sept. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 1.7 μg/m3 (8) 8.0
 
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) 9.6 μg/m3 (40) 40.0
 
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) 17.6 μg/m3 (63) 63.0
 
Sept. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 3.9 μg/m3 (17) 17.0
 
Sept. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) 4.4 μg/m3 (19) 23.0
 
Sept. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 2.1 μg/m3 (9) 12.0
 
Sept. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 6.3 μg/m3 (27) 27.0
 
Sept. 20, 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) 1.5 μg/m3 (7) 7.0
 
Sept. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 7.1 μg/m3 (30) 30.0
 
Sept. 20, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) N/A 3.0
 
Sept. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) N/A 1.0
 
Sept. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 1.8 μg/m3 (8) 14.0
 
Sept. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 1.4 μg/m3 (6) 6.0
 
Sept. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 1.8 μg/m3 (8) 8.0
 
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) 1.3 μg/m3 (6) 6.0
 
Sept. 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 4.9 μg/m3 (21) 21.0
 
Sept. 19, 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) 0.4 μg/m3 (2) 15.0
 
Sept. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 4.1 μg/m3 (18) 18.0
 
Sept. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A -3.0 μg/m3 (0) 5.8 μg/m3 (25) 25.0
 
Sept. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 2.6 μg/m3 (11) 11.0
 
Sept. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 3.4 μg/m3 (15) 15.0
 
Sept. 19, 2021, 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 (10) 10.0
 
Sept. 19, 2021, 11 a.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, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 4.7 μg/m3 (20) 20.0
 
Sept. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 6.6 μg/m3 (28) 28.0
 
Sept. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) -0.8 μg/m3 (0) 3.0
 
Sept. 19, 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) 3.5 μg/m3 (15) 15.0
 
Sept. 19, 2021, 6 a.m. 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 (5) 5.0
 
Sept. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 6.9 μg/m3 (29) 29.0
 
Sept. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 1.6 μg/m3 (7) 7.0
 
Sept. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 2.2 μg/m3 (10) 10.0
 
Sept. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 7.3 μg/m3 (31) 31.0
 
Sept. 19, 2021, 1 a.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
 
Sept. 19, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 3.8 μg/m3 (16) 16.0
 
Sept. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 4.5 μg/m3 (19) 19.0
 
Sept. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 12.5 μg/m3 (52) 52.0
 
Sept. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 14.4 μg/m3 (56) 56.0
 
Sept. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 19.4 μg/m3 (67) 67.0
 
Sept. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (27) 26.1 μg/m3 (81) 81.0
 
Sept. 18, 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) 25.3 μg/m3 (79) 79.0
 
Sept. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (27) 18.8 μg/m3 (66) 66.0
 
Sept. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 7.6 μg/m3 (32) 32.0
 
Sept. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 0.7 μg/m3 (3) 15.0
 
Sept. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
Sept. 18, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 13.1 μg/m3 (54) 54.0
 
Sept. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
Sept. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 8.4 μg/m3 (36) 36.0
 
Sept. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 7.3 μg/m3 (31) 31.0
 
Sept. 18, 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) 7.4 μg/m3 (31) 31.0
 
Sept. 18, 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) 4.4 μg/m3 (19) 19.0
 
Sept. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 8.1 μg/m3 (34) 34.0
 
Sept. 18, 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) 7.9 μg/m3 (33) 33.0
 
Sept. 18, 2021, 4 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. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) 12.5 μg/m3 (52) 52.0
 
Sept. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 2.2 μg/m3 (10) 10.0
 
Sept. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 3.8 μg/m3 (16) 16.0
 
Sept. 18, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) -0.7 μg/m3 (0) 23.0
 
Sept. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) N/A 19.0
 
Sept. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 4.1 μg/m3 (18) 18.0
 
Sept. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 2.8 μg/m3 (12) 12.0
 
Sept. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 5.6 μg/m3 (24) 24.0
 
Sept. 17, 2021, 7 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
 
Sept. 17, 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) 4.1 μg/m3 (18) 18.0
 
Sept. 17, 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) 1.3 μg/m3 (6) 7.0
 
Sept. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (9) 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 6.7 μg/m3 (28) 28.0
 
Sept. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 8.0 μg/m3 (34) 34.0
 
Sept. 17, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 6.2 μg/m3 (26) 26.0
 
Sept. 17, 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) 8.0 μg/m3 (34) 34.0
 
Sept. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 6.7 μg/m3 (28) 28.0
 
Sept. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 11.8 μg/m3 (50) 50.0
 
Sept. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 18.2 μg/m3 (64) 64.0
 
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) 7.3 μg/m3 (31) 31.0
 
Sept. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 11.5 μg/m3 (48) 48.0
 
Sept. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 5.8 μg/m3 (25) 25.0
 
Sept. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 2.9 μg/m3 (13) 13.0
 
Sept. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) N/A 16.0
 
Sept. 17, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 3.0 μg/m3 (13) 13.0
 
Sept. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) N/A 13.0
 
Sept. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 7.5 μg/m3 (32) 32.0
 
Sept. 16, 2021, 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. 16, 2021, 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. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 4.0
 
Sept. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 2.5 μg/m3 (11) 11.0
 
Sept. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) 3.9 μg/m3 (17) 17.0
 
Sept. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 0.1 μg/m3 (1) 12.0
 
Sept. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 8.8 μg/m3 (37) 37.0
 
Sept. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 7.3 μg/m3 (31) 31.0
 
Sept. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 6.4 μg/m3 (27) 27.0
 
Sept. 16, 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) 8.4 μg/m3 (36) 36.0
 
Sept. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
Sept. 16, 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) 2.3 μg/m3 (10) 10.0
 
Sept. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 6.9 μg/m3 (29) 29.0
 
Sept. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 15.6 μg/m3 (59) 59.0
 
Sept. 16, 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) 6.2 μg/m3 (26) 26.0
 
Sept. 16, 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) -3.3 μg/m3 (0) 21.0
 
Sept. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 39.0 μg/m3 (37) 2.6 μg/m3 (11) 37.0
 
Sept. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 46.0 μg/m3 (43) 10.7 μg/m3 (45) 45.0
 
Sept. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) -4.3 μg/m3 (0) 30.0
 
Sept. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 37.0 μg/m3 (35) -1.9 μg/m3 (0) 35.0
 
Sept. 16, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) -2.1 μg/m3 (0) 7.0
 
Sept. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 48.0 μg/m3 (45) 4.0 μg/m3 (17) 45.0
 
Sept. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) -3.8 μg/m3 (0) 13.0
 
Sept. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 11.0 μg/m3 (46) 46.0
 
Sept. 15, 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) 4.4 μg/m3 (19) 19.0
 
Sept. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 4.5 μg/m3 (19) 20.0
 
Sept. 15, 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) 0.2 μg/m3 (1) 23.0
 
Sept. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (22) 12.9 μg/m3 (53) 53.0
 
Sept. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.2 μg/m3 (14) 14.0
 
Sept. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 12.3 μg/m3 (52) 52.0
 
Sept. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (22) 12.2 μg/m3 (52) 52.0
 
Sept. 15, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (24) 8.5 μg/m3 (36) 36.0
 
Sept. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 60.0 μg/m3 (54) 12.1 μg/m3 (51) 54.0
 
Sept. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) -0.7 μg/m3 (0) 21.0
 
Sept. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 12.2 μg/m3 (52) 52.0
 
Sept. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 19.1 μg/m3 (66) 66.0
 
Sept. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (32) 17.8 μg/m3 (63) 63.0
 
Sept. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 45.0 μg/m3 (42) 5.2 μg/m3 (22) 42.0
 
Sept. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 92.0 μg/m3 (70) 9.9 μg/m3 (42) 70.0
 
Sept. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 107.0 μg/m3 (77) 10.6 μg/m3 (45) 77.0
 
Sept. 15, 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) -0.8 μg/m3 (0) 20.0
 
Sept. 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (22) 2.6 μg/m3 (11) 22.0
 
Sept. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 1.7 μg/m3 (8) 12.0
 
Sept. 15, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 7.8 μg/m3 (33) 33.0
 
Sept. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 13.1 μg/m3 (54) 54.0
 
Sept. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 2.9 μg/m3 (13) 13.0
 
Sept. 14, 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) 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 1.9 μg/m3 (8) 11.0
 
Sept. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) 8.2 μg/m3 (35) 35.0
 
Sept. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 11.6 μg/m3 (49) 49.0
 
Sept. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 6.8 μg/m3 (29) 29.0