ID: 2668

AQSQID: 560090010

Site Name: Converse County Long-Term

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

Updated: April 20, 2021, 8:45 a.m.

Location: Douglas (Highland Loop Rd), WY

Reporting: True, Located: True

Current AQI: 4.0

Douglas (Highland Loop Rd) WY, US: 43.1, -105.5

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) N/A 4.0
 
April 20, 2021, 5 a.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) 0.09 ppb (2) 9.0 μg/m3 (9) N/A 38.0
 
April 20, 2021, 4 a.m. 0.2 ppb (1) -0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) 0.11 ppb (2) 7.0 μg/m3 (7) N/A 38.0
 
April 20, 2021, 3 a.m. 0.6 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) 0.1 ppb (2) 9.0 μg/m3 (9) N/A 38.0
 
April 20, 2021, 2 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) 0.1 ppb (2) 7.0 μg/m3 (7) N/A 38.0
 
April 20, 2021, 1 a.m. 1.0 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) 0.09 ppb (2) 8.0 μg/m3 (8) N/A 38.0
 
April 20, 2021, midnight 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) 0.1 ppb (2) 7.0 μg/m3 (7) N/A 41.0
 
April 19, 2021, 11 p.m. 1.2 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) 0.1 ppb (2) 6.0 μg/m3 (6) N/A 42.0
 
April 19, 2021, 10 p.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) 0.1 ppb (2) 4.0 μg/m3 (4) N/A 44.0
 
April 19, 2021, 9 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) 0.09 ppb (2) 2.0 μg/m3 (2) N/A 42.0
 
April 19, 2021, 8 p.m. 0.5 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.09 ppb (2) 3.0 μg/m3 (3) N/A 43.0
 
April 19, 2021, 7 p.m. 1.0 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (45) 0.1 ppb (2) 4.0 μg/m3 (4) N/A 45.0
 
April 19, 2021, 6 p.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) 0.1 ppb (2) 4.0 μg/m3 (4) N/A 42.0
 
April 19, 2021, 5 p.m. 1.2 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) 0.1 ppb (2) 6.0 μg/m3 (6) N/A 40.0
 
April 19, 2021, 4 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) 0.09 ppb (2) 6.0 μg/m3 (6) N/A 38.0
 
April 19, 2021, 3 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.09 ppb (2) 7.0 μg/m3 (7) N/A 35.0
 
April 19, 2021, 2 p.m. 2.1 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) 0.09 ppb (2) 7.0 μg/m3 (7) N/A 34.0
 
April 19, 2021, 1 p.m. 1.1 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.09 ppb (2) 4.0 μg/m3 (4) N/A 36.0
 
April 19, 2021, noon 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) 0.08 ppb (2) 5.0 μg/m3 (5) N/A 35.0
 
April 19, 2021, 11 a.m. 0.9 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.1 ppb (2) 5.0 μg/m3 (5) N/A 34.0
 
April 19, 2021, 10 a.m. 0.2 ppb (1) -0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.1 ppb (2) 6.0 μg/m3 (6) N/A 35.0
 
April 19, 2021, 9 a.m. 1.9 ppb (2) -0.6 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) 0.08 ppb (2) 8.0 μg/m3 (8) N/A 34.0
 
April 19, 2021, 8 a.m. 2.3 ppb (3) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (25) 0.08 ppb (2) 2.0 μg/m3 (2) N/A 25.0
 
April 19, 2021, 7 a.m. 0.5 ppb (1) -0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) 0.06 ppb (2) 5.0 μg/m3 (5) N/A 29.0
 
April 19, 2021, 6 a.m. 1.1 ppb (2) -0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) 0.06 ppb (2) 6.0 μg/m3 (6) N/A 28.0
 
April 19, 2021, 5 a.m. 0.7 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.06 ppb (2) 5.0 μg/m3 (5) N/A 30.0
 
April 19, 2021, 4 a.m. 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) 0.05 ppb (2) 19.0 μg/m3 (18) N/A 26.0
 
April 19, 2021, 3 a.m. 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) 0.06 ppb (2) 20.0 μg/m3 (19) N/A 37.0
 
April 19, 2021, 2 a.m. 0.9 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.07 ppb (2) 29.0 μg/m3 (27) N/A 43.0
 
April 19, 2021, 1 a.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.07 ppb (2) 15.0 μg/m3 (14) N/A 43.0
 
April 19, 2021, midnight 0.5 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (48) 0.08 ppb (2) 13.0 μg/m3 (13) N/A 48.0
 
April 18, 2021, 11 p.m. 0.6 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (47) 0.09 ppb (2) 17.0 μg/m3 (16) N/A 47.0
 
April 18, 2021, 10 p.m. 0.4 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (50) 0.09 ppb (2) 16.0 μg/m3 (15) N/A 50.0
 
April 18, 2021, 9 p.m. 0.2 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (49) 0.09 ppb (2) 13.0 μg/m3 (13) N/A 49.0
 
April 18, 2021, 8 p.m. 0.4 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (48) 0.09 ppb (2) N/A N/A 48.0
 
April 18, 2021, 7 p.m. 0.5 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (49) 0.09 ppb (2) 17.0 μg/m3 (16) N/A 49.0
 
April 18, 2021, 6 p.m. 0.5 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (49) 0.1 ppb (2) 24.0 μg/m3 (23) N/A 49.0
 
April 18, 2021, 5 p.m. 0.4 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (47) 0.09 ppb (2) 11.0 μg/m3 (11) N/A 47.0
 
April 18, 2021, 4 p.m. 0.3 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) 0.08 ppb (2) 13.0 μg/m3 (13) N/A 42.0
 
April 18, 2021, 3 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) 0.07 ppb (2) 7.0 μg/m3 (7) N/A 37.0
 
April 18, 2021, 2 p.m. 0.8 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.07 ppb (2) 6.0 μg/m3 (6) N/A 34.0
 
April 18, 2021, 1 p.m. 0.5 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.07 ppb (2) 7.0 μg/m3 (7) N/A 32.0
 
April 18, 2021, noon 1.2 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.08 ppb (2) 6.0 μg/m3 (6) N/A 30.0
 
April 18, 2021, 11 a.m. 1.9 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (29) 0.07 ppb (2) 6.0 μg/m3 (6) N/A 29.0
 
April 18, 2021, 10 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.07 ppb (2) N/A N/A 30.0
 
April 18, 2021, 9 a.m. 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.06 ppb (2) 4.0 μg/m3 (4) N/A 32.0
 
April 18, 2021, 8 a.m. 0.3 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.07 ppb (2) 7.0 μg/m3 (7) N/A 31.0
 
April 18, 2021, 7 a.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) 0.06 ppb (2) 7.0 μg/m3 (7) N/A 27.0
 
April 18, 2021, 6 a.m. 0.0 ppb (0) -0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 29.0 ppb (27) 0.07 ppb (2) 5.0 μg/m3 (5) N/A 27.0
 
April 18, 2021, 5 a.m. 0.5 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.1 ppb (2) 6.0 μg/m3 (6) N/A 32.0
 
April 18, 2021, 4 a.m. 0.7 ppb (1) -0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.08 ppb (2) 6.0 μg/m3 (6) N/A 31.0
 
April 18, 2021, 3 a.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.07 ppb (2) N/A N/A 34.0
 
April 18, 2021, 2 a.m. 0.3 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (37) 0.07 ppb (2) 13.0 μg/m3 (13) N/A 37.0
 
April 18, 2021, 1 a.m. 0.3 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) 0.08 ppb (2) 11.0 μg/m3 (11) N/A 39.0
 
April 18, 2021, midnight 0.4 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.09 ppb (2) 4.0 μg/m3 (4) N/A 43.0
 
April 17, 2021, 11 p.m. 0.4 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) 0.09 ppb (2) 3.0 μg/m3 (3) N/A 44.0
 
April 17, 2021, 10 p.m. 0.3 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) 0.08 ppb (2) 4.0 μg/m3 (4) N/A 44.0
 
April 17, 2021, 9 p.m. 0.4 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) 0.09 ppb (2) 5.0 μg/m3 (5) N/A 44.0
 
April 17, 2021, 8 p.m. 0.1 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) 0.09 ppb (2) 4.0 μg/m3 (4) N/A 44.0
 
April 17, 2021, 7 p.m. 0.2 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) 0.09 ppb (2) 8.0 μg/m3 (8) N/A 43.0
 
April 17, 2021, 6 p.m. 0.4 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.09 ppb (2) N/A N/A 43.0
 
April 17, 2021, 5 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) 0.09 ppb (2) 6.0 μg/m3 (6) N/A 42.0
 
April 17, 2021, 4 p.m. 1.7 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.09 ppb (2) 6.0 μg/m3 (6) N/A 36.0
 
April 17, 2021, 3 p.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.08 ppb (2) 2.0 μg/m3 (2) N/A 34.0
 
April 17, 2021, 2 p.m. 4.2 ppb (4) 1.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.09 ppb (2) 5.0 μg/m3 (5) N/A 33.0
 
April 17, 2021, 1 p.m. 3.8 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) 0.08 ppb (2) 8.0 μg/m3 (8) N/A 32.0
 
April 17, 2021, noon 0.7 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.08 ppb (2) 6.0 μg/m3 (6) N/A 34.0
 
April 17, 2021, 11 a.m. 5.0 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.08 ppb (2) N/A N/A 29.0
 
April 17, 2021, 10 a.m. 2.0 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.09 ppb (2) 7.0 μg/m3 (7) N/A 30.0
 
April 17, 2021, 9 a.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.08 ppb (2) 6.0 μg/m3 (6) N/A 31.0
 
April 17, 2021, 8 a.m. 0.3 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.08 ppb (2) 3.0 μg/m3 (3) N/A 31.0
 
April 17, 2021, 7 a.m. 0.5 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.07 ppb (2) 3.0 μg/m3 (3) N/A 30.0
 
April 17, 2021, 6 a.m. 0.4 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) 0.07 ppb (2) 2.0 μg/m3 (2) N/A 29.0
 
April 17, 2021, 5 a.m. 0.5 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) 0.07 ppb (2) 1.0 μg/m3 (1) N/A 26.0
 
April 17, 2021, 4 a.m. 1.1 ppb (2) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.06 ppb (2) 1.0 μg/m3 (1) N/A 31.0
 
April 17, 2021, 3 a.m. 0.6 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.06 ppb (2) 1.0 μg/m3 (1) N/A 30.0
 
April 17, 2021, 2 a.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) 0.06 ppb (2) 1.0 μg/m3 (1) N/A 29.0
 
April 17, 2021, 1 a.m. 0.2 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.07 ppb (2) 1.0 μg/m3 (1) N/A 32.0
 
April 17, 2021, midnight 0.3 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.07 ppb (2) 0.0 μg/m3 (0) N/A 33.0
 
April 16, 2021, 11 p.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.07 ppb (2) 0.0 μg/m3 (0) N/A 34.0
 
April 16, 2021, 10 p.m. 0.5 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.08 ppb (2) 2.0 μg/m3 (2) N/A 33.0
 
April 16, 2021, 9 p.m. 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.08 ppb (2) N/A N/A 34.0
 
April 16, 2021, 8 p.m. 0.5 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.08 ppb (2) 0.0 μg/m3 (0) N/A 34.0
 
April 16, 2021, 7 p.m. 0.6 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.08 ppb (2) -2.0 μg/m3 (0) N/A 33.0
 
April 16, 2021, 6 p.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.08 ppb (2) -2.0 μg/m3 (0) N/A 33.0
 
April 16, 2021, 5 p.m. 0.6 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.08 ppb (2) 0.0 μg/m3 (0) N/A 30.0
 
April 16, 2021, 4 p.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.08 ppb (2) 4.0 μg/m3 (4) N/A 30.0
 
April 16, 2021, 3 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) 0.08 ppb (2) 4.0 μg/m3 (4) N/A 29.0
 
April 16, 2021, 2 p.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) 0.08 ppb (2) 3.0 μg/m3 (3) N/A 27.0
 
April 16, 2021, 1 p.m. 1.3 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) 0.08 ppb (2) 4.0 μg/m3 (4) N/A 26.0
 
April 16, 2021, noon 1.1 ppb (2) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) 0.08 ppb (2) 1.0 μg/m3 (1) N/A 26.0
 
April 16, 2021, 11 a.m. 1.1 ppb (2) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) 0.08 ppb (2) 3.0 μg/m3 (3) N/A 28.0
 
April 16, 2021, 10 a.m. 0.9 ppb (1) -0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) 0.09 ppb (2) 5.0 μg/m3 (5) N/A 28.0
 
April 16, 2021, 9 a.m. 0.7 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) 0.08 ppb (2) 2.0 μg/m3 (2) N/A 28.0
 
April 16, 2021, 8 a.m. 1.9 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) 0.09 ppb (2) -1.0 μg/m3 (0) N/A 28.0
 
April 16, 2021, 7 a.m. 5.0 ppb (5) -0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (25) 0.08 ppb (2) 4.0 μg/m3 (4) N/A 25.0
 
April 16, 2021, 6 a.m. 1.3 ppb (2) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) 0.08 ppb (2) 3.0 μg/m3 (3) N/A 27.0
 
April 16, 2021, 5 a.m. 0.7 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) 0.07 ppb (2) -3.0 μg/m3 (0) N/A 26.0
 
April 16, 2021, 4 a.m. 0.4 ppb (1) -0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) 0.07 ppb (2) -1.0 μg/m3 (0) N/A 27.0
 
April 16, 2021, 3 a.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) 0.08 ppb (2) 2.0 μg/m3 (2) N/A 29.0
 
April 16, 2021, 2 a.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.08 ppb (2) 4.0 μg/m3 (4) N/A 30.0
 
April 16, 2021, 1 a.m. 0.2 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) 0.07 ppb (2) 1.0 μg/m3 (1) N/A 30.0
 
April 16, 2021, midnight 0.2 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) 0.07 ppb (2) -1.0 μg/m3 (0) N/A 30.0
 
April 15, 2021, 11 p.m. 0.4 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.08 ppb (2) 2.0 μg/m3 (2) N/A 30.0
 
April 15, 2021, 10 p.m. 0.5 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.07 ppb (2) 3.0 μg/m3 (3) N/A 30.0
 
April 15, 2021, 9 p.m. 0.5 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) 0.07 ppb (2) 5.0 μg/m3 (5) N/A 29.0
 
April 15, 2021, 8 p.m. 0.5 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) 0.07 ppb (2) 4.0 μg/m3 (4) N/A 29.0
 
April 15, 2021, 7 p.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) 0.07 ppb (2) 1.0 μg/m3 (1) N/A 28.0
 
April 15, 2021, 6 p.m. 0.4 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) 0.07 ppb (2) 1.0 μg/m3 (1) N/A 28.0
 
April 15, 2021, 5 p.m. 0.2 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) 0.07 ppb (2) 2.0 μg/m3 (2) N/A 28.0
 
April 15, 2021, 4 p.m. 0.4 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) 0.07 ppb (2) 4.0 μg/m3 (4) N/A 28.0
 
April 15, 2021, 3 p.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) 0.07 ppb (2) 3.0 μg/m3 (3) N/A 27.0
 
April 15, 2021, 2 p.m. 2.5 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) 0.08 ppb (2) 3.0 μg/m3 (3) N/A 26.0
 
April 15, 2021, 1 p.m. 0.2 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) 0.07 ppb (2) 5.0 μg/m3 (5) N/A 27.0
 
April 15, 2021, noon 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) 0.07 ppb (2) 6.0 μg/m3 (6) N/A 27.0
 
April 15, 2021, 11 a.m. 0.3 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) 0.06 ppb (2) 9.0 μg/m3 (9) N/A 27.0
 
April 15, 2021, 10 a.m. 0.2 ppb (1) -0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) 0.06 ppb (2) 5.0 μg/m3 (5) N/A 26.0
 
April 15, 2021, 9 a.m. 0.5 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) 0.06 ppb (2) 4.0 μg/m3 (4) N/A 26.0
 
April 15, 2021, 8 a.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) 0.06 ppb (2) 8.0 μg/m3 (8) N/A 27.0
 
April 15, 2021, 7 a.m. 0.4 ppb (1) -0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 26.0 ppb (25) 0.05 ppb (2) 8.0 μg/m3 (8) N/A 25.0
 
April 15, 2021, 6 a.m. 1.2 ppb (2) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) 0.05 ppb (2) 6.0 μg/m3 (6) N/A 28.0
 
April 15, 2021, 5 a.m. 1.5 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.06 ppb (2) 7.0 μg/m3 (7) N/A 31.0
 
April 15, 2021, 4 a.m. 0.6 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.06 ppb (2) 2.0 μg/m3 (2) N/A 32.0
 
April 15, 2021, 3 a.m. 0.8 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.06 ppb (2) 19.0 μg/m3 (18) N/A 33.0
 
April 15, 2021, 2 a.m. 0.7 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.07 ppb (2) N/A N/A 35.0
 
April 15, 2021, 1 a.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.08 ppb (2) 42.0 μg/m3 (39) N/A 39.0
 
April 15, 2021, midnight 0.0 ppb (0) -0.6 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.08 ppb (2) 4.0 μg/m3 (4) N/A 35.0
 
April 14, 2021, 11 p.m. 0.5 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.08 ppb (2) 2.0 μg/m3 (2) N/A 36.0
 
April 14, 2021, 10 p.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.08 ppb (2) 7.0 μg/m3 (7) N/A 36.0
 
April 14, 2021, 9 p.m. 0.5 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.08 ppb (2) N/A N/A 35.0
 
April 14, 2021, 8 p.m. 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.09 ppb (2) 6.0 μg/m3 (6) N/A 34.0
 
April 14, 2021, 7 p.m. 3.3 ppb (4) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.09 ppb (2) 7.0 μg/m3 (7) N/A 31.0
 
April 14, 2021, 6 p.m. 3.5 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.09 ppb (2) 6.0 μg/m3 (6) N/A 31.0
 
April 14, 2021, 5 p.m. 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.09 ppb (2) 1.0 μg/m3 (1) N/A 33.0
 
April 14, 2021, 4 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.09 ppb (2) 0.0 μg/m3 (0) N/A 35.0
 
April 14, 2021, 3 p.m. 0.6 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.09 ppb (2) 0.0 μg/m3 (0) N/A 35.0
 
April 14, 2021, 2 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.08 ppb (2) N/A N/A 36.0
 
April 14, 2021, 1 p.m. 0.6 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.08 ppb (2) 3.0 μg/m3 (3) N/A 34.0
 
April 14, 2021, noon 0.4 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (33) 0.08 ppb (2) -1.0 μg/m3 (0) N/A 33.0
 
April 14, 2021, 11 a.m. 0.1 ppb (1) -0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (34) 0.08 ppb (2) 0.0 μg/m3 (0) N/A 34.0
 
April 14, 2021, 10 a.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.08 ppb (2) 3.0 μg/m3 (3) N/A 34.0
 
April 14, 2021, 9 a.m. 0.4 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.08 ppb (2) 4.0 μg/m3 (4) N/A 34.0
 
April 14, 2021, 8 a.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.08 ppb (2) 2.0 μg/m3 (2) N/A 33.0
 
April 14, 2021, 7 a.m. 0.8 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.09 ppb (2) 2.0 μg/m3 (2) N/A 32.0
 
April 14, 2021, 6 a.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.08 ppb (2) 3.0 μg/m3 (3) N/A 31.0
 
April 14, 2021, 5 a.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.08 ppb (2) 4.0 μg/m3 (4) N/A 31.0
 
April 14, 2021, 4 a.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.08 ppb (2) 15.0 μg/m3 (14) N/A 31.0
 
April 14, 2021, 3 a.m. 1.1 ppb (2) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.08 ppb (2) N/A N/A 33.0
 
April 14, 2021, 2 a.m. 0.4 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.09 ppb (2) 11.0 μg/m3 (11) N/A 36.0
 
April 14, 2021, 1 a.m. 0.2 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (37) 0.09 ppb (2) 6.0 μg/m3 (6) N/A 37.0
 
April 14, 2021, midnight -0.1 ppb (0) -0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) 0.09 ppb (2) 3.0 μg/m3 (3) N/A 38.0
 
April 13, 2021, 11 p.m. 0.1 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) 0.1 ppb (2) 4.0 μg/m3 (4) N/A 38.0
 
April 13, 2021, 10 p.m. 0.3 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) 0.09 ppb (2) 5.0 μg/m3 (5) N/A 38.0
 
April 13, 2021, 9 p.m. 0.2 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (37) 0.07 ppb (2) 5.0 μg/m3 (5) N/A 37.0
 
April 13, 2021, 8 p.m. 0.0 ppb (0) -0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (35) 0.06 ppb (2) 8.0 μg/m3 (8) N/A 35.0
 
April 13, 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) N/A 5.0
 
April 13, 2021, 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
April 13, 2021, 5 p.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
 
April 13, 2021, 4 p.m. -0.3 ppb (0) -0.7 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (37) 0.06 ppb (2) 4.0 μg/m3 (4) N/A 37.0
 
April 13, 2021, 3 p.m. 0.0 ppb (0) -0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (36) 0.07 ppb (2) 3.0 μg/m3 (3) N/A 36.0
 
April 13, 2021, 2 p.m. 0.1 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (36) 0.1 ppb (2) 6.0 μg/m3 (6) N/A 36.0
 
April 13, 2021, 1 p.m. 0.0 ppb (0) -0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (34) 0.15 ppb (2) 5.0 μg/m3 (5) N/A 34.0
 
April 13, 2021, noon 0.8 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.06 ppb (2) 4.0 μg/m3 (4) N/A 30.0
 
April 13, 2021, 11 a.m. 0.7 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.07 ppb (2) 1.0 μg/m3 (1) N/A 32.0
 
April 13, 2021, 10 a.m. 0.0 ppb (0) -0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (34) 0.08 ppb (2) 3.0 μg/m3 (3) N/A 34.0
 
April 13, 2021, 9 a.m. 0.1 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.06 ppb (2) 3.0 μg/m3 (3) N/A 34.0
 
April 13, 2021, 8 a.m. 0.4 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.08 ppb (2) 4.0 μg/m3 (4) N/A 33.0
 
April 13, 2021, 7 a.m. 0.3 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) 0.06 ppb (2) 3.0 μg/m3 (3) N/A 32.0