ID: 265

AQSQID: 090011123

Site Name: Danbury

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

Updated: Jan. 27, 2021, 1:31 p.m.

Location: Danbury (Germantown), CT

Reporting: False, Located: True

Current AQI: None

Danbury (Germantown) CT, US: 41.4014, -73.4447

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 26, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.5 μg/m3 (15) 8.0 μg/m3 (34) 34.0
 
Jan. 26, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 17.5 μg/m3 (17) 8.1 μg/m3 (34) 34.0
 
Jan. 26, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.3 μg/m3 (15) 7.8 μg/m3 (33) 33.0
 
Jan. 26, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.1 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
Jan. 26, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.8 μg/m3 (13) 8.2 μg/m3 (35) 35.0
 
Jan. 26, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.1 μg/m3 (13) 8.3 μg/m3 (35) 35.0
 
Jan. 26, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 9.2 μg/m3 (39) 39.0
 
Jan. 26, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.5 μg/m3 (11) 7.2 μg/m3 (31) 31.0
 
Jan. 26, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.4 μg/m3 (10) 6.7 μg/m3 (28) 28.0
 
Jan. 26, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.4 μg/m3 (10) 6.2 μg/m3 (26) 26.0
 
Jan. 26, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.4 μg/m3 (12) 6.6 μg/m3 (28) 28.0
 
Jan. 26, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.6 μg/m3 (11) 6.5 μg/m3 (28) 28.0
 
Jan. 26, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.9 μg/m3 (11) 5.6 μg/m3 (24) 24.0
 
Jan. 26, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 11.9 μg/m3 (12) 5.8 μg/m3 (25) 25.0
 
Jan. 25, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.9 μg/m3 (11) 5.2 μg/m3 (22) 22.0
 
Jan. 25, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.4 μg/m3 (11) 4.0 μg/m3 (17) 17.0
 
Jan. 25, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.4 μg/m3 (9) 3.7 μg/m3 (16) 16.0
 
Jan. 25, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.9 μg/m3 (8) 3.0 μg/m3 (13) 13.0
 
Jan. 25, 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) 3.3 μg/m3 (14) 14.0
 
Jan. 25, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.3 μg/m3 (8) 3.5 μg/m3 (15) 15.0
 
Jan. 25, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.2 μg/m3 (7) 3.3 μg/m3 (14) 14.0
 
Jan. 25, 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) 2.8 μg/m3 (12) 12.0
 
Jan. 25, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.6 μg/m3 (7) 3.3 μg/m3 (14) 14.0
 
Jan. 25, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.2 μg/m3 (7) 3.2 μg/m3 (14) 14.0
 
Jan. 25, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.8 μg/m3 (7) 3.5 μg/m3 (15) 15.0
 
Jan. 25, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.8 μg/m3 (8) 3.3 μg/m3 (14) 14.0
 
Jan. 25, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.4 μg/m3 (6) 3.1 μg/m3 (13) 13.0
 
Jan. 25, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.6 μg/m3 (5) 2.8 μg/m3 (12) 12.0
 
Jan. 25, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.1 μg/m3 (5) 2.2 μg/m3 (10) 10.0
 
Jan. 25, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.7 μg/m3 (5) 2.0 μg/m3 (9) 9.0
 
Jan. 25, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.5 μg/m3 (3) 1.6 μg/m3 (7) 7.0
 
Jan. 25, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.9 μg/m3 (3) 1.8 μg/m3 (8) 8.0
 
Jan. 25, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (5) 1.9 μg/m3 (8) 8.0
 
Jan. 25, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.8 μg/m3 (6) 2.4 μg/m3 (10) 10.0
 
Jan. 25, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.5 μg/m3 (7) 3.2 μg/m3 (14) 14.0
 
Jan. 25, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.5 μg/m3 (7) 3.9 μg/m3 (17) 17.0
 
Jan. 25, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.3 μg/m3 (9) 4.3 μg/m3 (18) 18.0
 
Jan. 25, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 9.3 μg/m3 (9) 4.1 μg/m3 (18) 18.0
 
Jan. 24, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.6 μg/m3 (7) 3.3 μg/m3 (14) 14.0
 
Jan. 24, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.1 μg/m3 (7) 3.4 μg/m3 (15) 15.0
 
Jan. 24, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.1 μg/m3 (6) 2.5 μg/m3 (11) 11.0
 
Jan. 24, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.6 μg/m3 (5) 1.8 μg/m3 (8) 8.0
 
Jan. 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.3 μg/m3 (6) 1.9 μg/m3 (8) 8.0
 
Jan. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.3 μg/m3 (6) 1.9 μg/m3 (8) 8.0
 
Jan. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.9 μg/m3 (5) 2.0 μg/m3 (9) 9.0
 
Jan. 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.4 μg/m3 (5) 1.6 μg/m3 (7) 7.0
 
Jan. 24, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.2 μg/m3 (3) 1.6 μg/m3 (7) 7.0
 
Jan. 24, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.2 μg/m3 (4) 1.7 μg/m3 (8) 8.0
 
Jan. 24, 2021, 1 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 (9) 9.0
 
Jan. 24, 2021, noon 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 (9) 9.0
 
Jan. 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.1 μg/m3 (4) 1.9 μg/m3 (8) 8.0
 
Jan. 24, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.5 μg/m3 (4) 1.8 μg/m3 (8) 8.0
 
Jan. 24, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.7 μg/m3 (5) 2.1 μg/m3 (9) 9.0
 
Jan. 24, 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) 2.6 μg/m3 (11) 11.0
 
Jan. 24, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.4 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Jan. 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.1 μg/m3 (6) 3.1 μg/m3 (13) 13.0
 
Jan. 24, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.9 μg/m3 (4) 2.8 μg/m3 (12) 12.0
 
Jan. 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.8 μg/m3 (5) 3.0 μg/m3 (13) 13.0
 
Jan. 24, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Jan. 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.8 μg/m3 (6) 3.3 μg/m3 (14) 14.0
 
Jan. 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.4 μg/m3 (5) 2.9 μg/m3 (13) 13.0
 
Jan. 24, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 5.5 μg/m3 (6) 3.1 μg/m3 (13) 13.0
 
Jan. 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.9 μg/m3 (7) 2.5 μg/m3 (11) 11.0
 
Jan. 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (5) 2.2 μg/m3 (10) 10.0
 
Jan. 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.2 μg/m3 (6) 2.0 μg/m3 (9) 9.0
 
Jan. 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.8 μg/m3 (7) 2.0 μg/m3 (9) 9.0
 
Jan. 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.1 μg/m3 (5) 2.0 μg/m3 (9) 9.0
 
Jan. 23, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.7 μg/m3 (8) 2.2 μg/m3 (10) 10.0
 
Jan. 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.8 μg/m3 (9) 3.3 μg/m3 (14) 14.0
 
Jan. 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.2 μg/m3 (8) 3.4 μg/m3 (15) 15.0
 
Jan. 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.2 μg/m3 (7) 3.3 μg/m3 (14) 14.0
 
Jan. 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.4 μg/m3 (7) 3.1 μg/m3 (13) 13.0
 
Jan. 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.4 μg/m3 (6) 3.5 μg/m3 (15) 15.0
 
Jan. 23, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 6.8 μg/m3 (7) 3.6 μg/m3 (16) 16.0
 
Jan. 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.8 μg/m3 (6) 2.9 μg/m3 (13) 13.0
 
Jan. 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.5 μg/m3 (6) 2.7 μg/m3 (12) 12.0
 
Jan. 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (5) 3.0 μg/m3 (13) 13.0
 
Jan. 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (5) 2.9 μg/m3 (13) 13.0
 
Jan. 23, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.8 μg/m3 (5) 2.7 μg/m3 (12) 12.0
 
Jan. 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.3 μg/m3 (4) 2.8 μg/m3 (12) 12.0
 
Jan. 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.3 μg/m3 (5) 2.8 μg/m3 (12) 12.0
 
Jan. 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.6 μg/m3 (6) 3.2 μg/m3 (14) 14.0
 
Jan. 23, 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) 3.3 μg/m3 (14) 14.0
 
Jan. 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.3 μg/m3 (6) 3.8 μg/m3 (16) 16.0
 
Jan. 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.8 μg/m3 (9) 4.5 μg/m3 (19) 19.0
 
Jan. 23, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 8.7 μg/m3 (9) 4.0 μg/m3 (17) 17.0
 
Jan. 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.9 μg/m3 (9) 4.2 μg/m3 (18) 18.0
 
Jan. 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.5 μg/m3 (9) 4.0 μg/m3 (17) 17.0
 
Jan. 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.4 μg/m3 (9) 3.9 μg/m3 (17) 17.0
 
Jan. 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.4 μg/m3 (9) 3.7 μg/m3 (16) 16.0
 
Jan. 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.9 μg/m3 (9) 3.5 μg/m3 (15) 15.0
 
Jan. 22, 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) 3.1 μg/m3 (13) 13.0
 
Jan. 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.6 μg/m3 (9) 3.8 μg/m3 (16) 16.0
 
Jan. 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.6 μg/m3 (9) 3.7 μg/m3 (16) 16.0
 
Jan. 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.4 μg/m3 (13) 4.5 μg/m3 (19) 19.0
 
Jan. 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.5 μg/m3 (15) 6.6 μg/m3 (28) 28.0
 
Jan. 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.1 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
Jan. 22, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 21.8 μg/m3 (21) 14.8 μg/m3 (57) 57.0
 
Jan. 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.7 μg/m3 (23) 16.6 μg/m3 (61) 61.0
 
Jan. 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.8 μg/m3 (23) 17.0 μg/m3 (62) 62.0
 
Jan. 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.1 μg/m3 (24) 16.9 μg/m3 (62) 62.0
 
Jan. 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.8 μg/m3 (25) 17.3 μg/m3 (62) 62.0
 
Jan. 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.1 μg/m3 (24) 16.5 μg/m3 (61) 61.0
 
Jan. 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.8 μg/m3 (22) 16.0 μg/m3 (60) 60.0
 
Jan. 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.4 μg/m3 (22) 15.5 μg/m3 (59) 59.0
 
Jan. 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.1 μg/m3 (22) 16.7 μg/m3 (61) 61.0
 
Jan. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 41.0 μg/m3 (38) 30.9 μg/m3 (91) 91.0
 
Jan. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 46.7 μg/m3 (44) 34.3 μg/m3 (98) 98.0
 
Jan. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 43.3 μg/m3 (41) 30.5 μg/m3 (90) 90.0
 
Jan. 22, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 43.2 μg/m3 (40) 27.8 μg/m3 (85) 85.0
 
Jan. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 39.5 μg/m3 (37) 23.8 μg/m3 (76) 76.0
 
Jan. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.6 μg/m3 (27) 15.0 μg/m3 (58) 58.0
 
Jan. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 11.2 μg/m3 (47) 47.0
 
Jan. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.9 μg/m3 (18) 10.9 μg/m3 (46) 46.0
 
Jan. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.6 μg/m3 (17) 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 9.6 μg/m3 (40) 40.0
 
Jan. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.5 μg/m3 (16) 8.6 μg/m3 (36) 36.0
 
Jan. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.4 μg/m3 (13) 7.8 μg/m3 (33) 33.0
 
Jan. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.8 μg/m3 (13) 7.4 μg/m3 (31) 31.0
 
Jan. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.1 μg/m3 (10) 5.7 μg/m3 (24) 24.0
 
Jan. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.3 μg/m3 (17) 6.4 μg/m3 (27) 27.0
 
Jan. 21, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 5.8 μg/m3 (25) 25.0
 
Jan. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.3 μg/m3 (12) 5.9 μg/m3 (25) 25.0
 
Jan. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.5 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
Jan. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.3 μg/m3 (8) 4.7 μg/m3 (20) 20.0
 
Jan. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.3 μg/m3 (6) 3.8 μg/m3 (16) 16.0
 
Jan. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.4 μg/m3 (6) 3.6 μg/m3 (16) 16.0
 
Jan. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.8 μg/m3 (5) 2.9 μg/m3 (13) 13.0
 
Jan. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.4 μg/m3 (6) 3.6 μg/m3 (16) 16.0
 
Jan. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.6 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Jan. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.1 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Jan. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.2 μg/m3 (4) 2.0 μg/m3 (9) 9.0
 
Jan. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.9 μg/m3 (4) 1.8 μg/m3 (8) 8.0
 
Jan. 21, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (5) 2.2 μg/m3 (10) 10.0
 
Jan. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.7 μg/m3 (6) 2.2 μg/m3 (10) 10.0
 
Jan. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.7 μg/m3 (8) 2.2 μg/m3 (10) 10.0
 
Jan. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.7 μg/m3 (9) 2.1 μg/m3 (9) 9.0
 
Jan. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (9) 3.0 μg/m3 (13) 13.0
 
Jan. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.6 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
Jan. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.9 μg/m3 (12) 6.3 μg/m3 (27) 27.0
 
Jan. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.6 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
Jan. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.7 μg/m3 (13) 6.9 μg/m3 (29) 29.0
 
Jan. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 7.5 μg/m3 (32) 32.0
 
Jan. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.4 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Jan. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.1 μg/m3 (13) 8.9 μg/m3 (38) 38.0
 
Jan. 20, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.9 μg/m3 (12) 8.0 μg/m3 (34) 34.0
 
Jan. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.8 μg/m3 (10) 6.7 μg/m3 (28) 28.0
 
Jan. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.1 μg/m3 (14) 9.4 μg/m3 (40) 40.0
 
Jan. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.8 μg/m3 (17) 13.7 μg/m3 (55) 55.0
 
Jan. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.5 μg/m3 (14) 11.3 μg/m3 (48) 48.0
 
Jan. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.3 μg/m3 (15) 11.6 μg/m3 (49) 49.0
 
Jan. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.7 μg/m3 (13) 10.9 μg/m3 (46) 46.0
 
Jan. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.6 μg/m3 (13) 10.9 μg/m3 (46) 46.0
 
Jan. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.1 μg/m3 (14) 11.1 μg/m3 (47) 47.0
 
Jan. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.8 μg/m3 (13) 9.9 μg/m3 (42) 42.0
 
Jan. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.3 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
Jan. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 11.6 μg/m3 (49) 49.0
 
Jan. 20, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 23.9 μg/m3 (23) 14.3 μg/m3 (56) 56.0
 
Jan. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.9 μg/m3 (17) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 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) 7.0 μg/m3 (30) 30.0
 
Jan. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (9) 4.9 μg/m3 (21) 21.0
 
Jan. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.6 μg/m3 (9) 4.4 μg/m3 (19) 19.0
 
Jan. 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.6 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Jan. 19, 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) 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2021, 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
Jan. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.6 μg/m3 (10) 7.3 μg/m3 (31) 31.0
 
Jan. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.4 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
Jan. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.6 μg/m3 (13) 8.3 μg/m3 (35) 35.0