AQSQID: 560350099

Site Name: Boulder

Location: Boulder (Paradise Rd), WY

Reporting: True, Located: True

Current AQI: 33.0

Boulder (Paradise Rd) WY, US: 42.7186, -109.7531

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 28, 2020, 10 a.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A 0.0 μg/m3 (0) N/A 33.0
 
Jan. 28, 2020, 9 a.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A -2.0 μg/m3 (0) N/A 32.0
 
Jan. 28, 2020, 8 a.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A 0.0 μg/m3 (0) N/A 32.0
 
Jan. 28, 2020, 7 a.m. 2.3 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A 0.0 μg/m3 (0) N/A 32.0
 
Jan. 28, 2020, 6 a.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A 1.0 μg/m3 (1) N/A 33.0
 
Jan. 28, 2020, 5 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 1.0 μg/m3 (1) N/A 34.0
 
Jan. 28, 2020, 4 a.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) N/A 34.0
 
Jan. 28, 2020, 3 a.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 1.0 μg/m3 (1) N/A 34.0
 
Jan. 28, 2020, 2 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A 2.0 μg/m3 (2) N/A 34.0
 
Jan. 28, 2020, 1 a.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) N/A 33.0
 
Jan. 28, 2020, midnight 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A -1.0 μg/m3 (0) N/A 34.0
 
Jan. 27, 2020, 11 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) N/A 34.0
 
Jan. 27, 2020, 10 p.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) N/A 34.0
 
Jan. 27, 2020, 9 p.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) N/A 34.0
 
Jan. 27, 2020, 8 p.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 2.0 μg/m3 (2) N/A 34.0
 
Jan. 27, 2020, 7 p.m. 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) N/A 32.0
 
Jan. 27, 2020, 6 p.m. 1.9 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 3.0 μg/m3 (3) N/A 31.0
 
Jan. 27, 2020, 5 p.m. 1.3 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 0.0 μg/m3 (0) N/A 30.0
 
Jan. 27, 2020, 4 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 1.0 μg/m3 (1) N/A 31.0
 
Jan. 27, 2020, 3 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 4.0 μg/m3 (4) N/A 31.0
 
Jan. 27, 2020, 2 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 5.0 μg/m3 (5) N/A 31.0
 
Jan. 27, 2020, 1 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A 3.0 μg/m3 (3) N/A 32.0
 
Jan. 27, 2020, noon 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A 2.0 μg/m3 (2) N/A 31.0
 
Jan. 27, 2020, 11 a.m. 2.3 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A 3.0 μg/m3 (3) N/A 32.0
 
Jan. 27, 2020, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) N/A 33.0
 
Jan. 27, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) N/A 5.0
 
Jan. 27, 2020, 8 a.m. 5.0 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (35) N/A 10.0 μg/m3 (9) N/A 35.0
 
Jan. 27, 2020, 7 a.m. 7.0 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 42.0 ppb (32) N/A 7.0 μg/m3 (6) N/A 32.0
 
Jan. 27, 2020, 6 a.m. 6.4 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (34) N/A 11.0 μg/m3 (10) N/A 34.0
 
Jan. 27, 2020, 5 a.m. 5.6 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 50.0 ppb (38) N/A 5.0 μg/m3 (5) N/A 38.0
 
Jan. 27, 2020, 4 a.m. 6.7 ppb (6) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 52.0 ppb (40) N/A 6.0 μg/m3 (5) N/A 40.0
 
Jan. 27, 2020, 3 a.m. 7.1 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 52.0 ppb (40) N/A 10.0 μg/m3 (9) N/A 40.0
 
Jan. 27, 2020, 2 a.m. 4.8 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 50.0 ppb (38) N/A 7.0 μg/m3 (6) N/A 38.0
 
Jan. 27, 2020, 1 a.m. 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 56.0 ppb (43) N/A 7.0 μg/m3 (6) N/A 43.0
 
Jan. 27, 2020, midnight 2.6 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (42) N/A 6.0 μg/m3 (5) N/A 42.0
 
Jan. 26, 2020, 11 p.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) N/A 8.0 μg/m3 (7) N/A 40.0
 
Jan. 26, 2020, 10 p.m. 4.6 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 58.0 ppb (45) N/A 7.0 μg/m3 (6) N/A 45.0
 
Jan. 26, 2020, 9 p.m. 7.0 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 55.0 ppb (42) N/A 5.0 μg/m3 (5) N/A 42.0
 
Jan. 26, 2020, 8 p.m. 7.6 ppb (7) 2.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 50.0 ppb (38) N/A 5.0 μg/m3 (5) N/A 38.0
 
Jan. 26, 2020, 7 p.m. 4.0 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) N/A 0.0 μg/m3 (0) N/A 35.0
 
Jan. 26, 2020, 6 p.m. 3.3 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A 3.0 μg/m3 (3) N/A 31.0
 
Jan. 26, 2020, 5 p.m. 4.0 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A 5.0 μg/m3 (5) N/A 28.0
 
Jan. 26, 2020, 4 p.m. 3.2 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A -3.0 μg/m3 (0) N/A 28.0
 
Jan. 26, 2020, 3 p.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A 1.0 μg/m3 (1) N/A 25.0
 
Jan. 26, 2020, 2 p.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) N/A 29.0
 
Jan. 26, 2020, 1 p.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A 6.0 μg/m3 (5) N/A 28.0
 
Jan. 26, 2020, noon 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A 5.0 μg/m3 (5) N/A 28.0
 
Jan. 26, 2020, 11 a.m. 2.9 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A 2.0 μg/m3 (2) N/A 29.0
 
Jan. 26, 2020, 10 a.m. 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A 0.0 μg/m3 (0) N/A 29.0
 
Jan. 26, 2020, 9 a.m. 3.2 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A 1.0 μg/m3 (1) N/A 29.0
 
Jan. 26, 2020, 8 a.m. 4.9 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) N/A 1.0 μg/m3 (1) N/A 27.0
 
Jan. 26, 2020, 7 a.m. 5.5 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) N/A 1.0 μg/m3 (1) N/A 28.0
 
Jan. 26, 2020, 6 a.m. 4.1 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) N/A 2.0 μg/m3 (2) N/A 29.0
 
Jan. 26, 2020, 5 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A -1.0 μg/m3 (0) N/A 31.0
 
Jan. 26, 2020, 4 a.m. 1.1 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A -1.0 μg/m3 (0) N/A 32.0
 
Jan. 26, 2020, 3 a.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A -2.0 μg/m3 (0) N/A 32.0
 
Jan. 26, 2020, 2 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A 0.0 μg/m3 (0) N/A 32.0
 
Jan. 26, 2020, 1 a.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) N/A 33.0
 
Jan. 26, 2020, midnight 2.7 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A 2.0 μg/m3 (2) N/A 36.0
 
Jan. 25, 2020, 11 p.m. 3.6 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 54.0 ppb (42) N/A 5.0 μg/m3 (5) N/A 42.0
 
Jan. 25, 2020, 10 p.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 56.0 ppb (43) N/A 6.0 μg/m3 (5) N/A 43.0
 
Jan. 25, 2020, 9 p.m. 2.3 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) N/A 7.0 μg/m3 (6) N/A 41.0
 
Jan. 25, 2020, 8 p.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A 10.0 μg/m3 (9) N/A 38.0
 
Jan. 25, 2020, 7 p.m. 2.9 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A 12.0 μg/m3 (11) N/A 35.0
 
Jan. 25, 2020, 6 p.m. 3.9 ppb (4) 1.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A 5.0 μg/m3 (5) N/A 32.0
 
Jan. 25, 2020, 5 p.m. 2.0 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A -2.0 μg/m3 (0) N/A 30.0
 
Jan. 25, 2020, 4 p.m. 2.0 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A 3.0 μg/m3 (3) N/A 29.0
 
Jan. 25, 2020, 3 p.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) N/A 30.0
 
Jan. 25, 2020, 2 p.m. 2.3 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A 1.0 μg/m3 (1) N/A 28.0
 
Jan. 25, 2020, 1 p.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A -2.0 μg/m3 (0) N/A 30.0
 
Jan. 25, 2020, noon 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 0.0 μg/m3 (0) N/A 30.0
 
Jan. 25, 2020, 11 a.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A 2.0 μg/m3 (2) N/A 30.0
 
Jan. 25, 2020, 10 a.m. 3.1 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A 0.0 μg/m3 (0) N/A 29.0
 
Jan. 25, 2020, 9 a.m. 3.1 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A 0.0 μg/m3 (0) N/A 30.0
 
Jan. 25, 2020, 8 a.m. 2.7 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A 0.0 μg/m3 (0) N/A 29.0
 
Jan. 25, 2020, 7 a.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A 0.0 μg/m3 (0) N/A 29.0
 
Jan. 25, 2020, 6 a.m. 3.2 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) N/A 33.0
 
Jan. 25, 2020, 5 a.m. 3.8 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (33) N/A 5.0 μg/m3 (5) N/A 33.0
 
Jan. 25, 2020, 4 a.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A 6.0 μg/m3 (5) N/A 31.0
 
Jan. 25, 2020, 3 a.m. 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A 5.0 μg/m3 (5) N/A 35.0
 
Jan. 25, 2020, 2 a.m. 2.4 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A 8.0 μg/m3 (7) N/A 38.0
 
Jan. 25, 2020, 1 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) N/A 7.0 μg/m3 (6) N/A 39.0
 
Jan. 25, 2020, midnight 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) N/A 4.0 μg/m3 (4) N/A 40.0
 
Jan. 24, 2020, 11 p.m. 3.5 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 53.0 ppb (41) N/A 7.0 μg/m3 (6) N/A 41.0
 
Jan. 24, 2020, 10 p.m. 4.5 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 54.0 ppb (42) N/A 6.0 μg/m3 (5) N/A 42.0
 
Jan. 24, 2020, 9 p.m. 5.1 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 54.0 ppb (42) N/A 4.0 μg/m3 (4) N/A 42.0
 
Jan. 24, 2020, 8 p.m. 4.0 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) N/A 3.0 μg/m3 (3) N/A 38.0
 
Jan. 24, 2020, 7 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) N/A 2.0 μg/m3 (2) N/A 32.0
 
Jan. 24, 2020, 6 p.m. 6.1 ppb (6) 3.1 ppb (3) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A -1.0 μg/m3 (0) N/A 28.0
 
Jan. 24, 2020, 5 p.m. 4.2 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A 1.0 μg/m3 (1) N/A 28.0
 
Jan. 24, 2020, 4 p.m. 2.4 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A -1.0 μg/m3 (0) N/A 29.0
 
Jan. 24, 2020, 3 p.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A -1.0 μg/m3 (0) N/A 28.0
 
Jan. 24, 2020, 2 p.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A -2.0 μg/m3 (0) N/A 30.0
 
Jan. 24, 2020, 1 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (29) N/A -3.0 μg/m3 (0) N/A 29.0
 
Jan. 24, 2020, noon 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A -4.0 μg/m3 (0) N/A 30.0
 
Jan. 24, 2020, 11 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A -3.0 μg/m3 (0) N/A 30.0
 
Jan. 24, 2020, 10 a.m. 0.5 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A -2.0 μg/m3 (0) N/A 30.0
 
Jan. 24, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A -2.0 μg/m3 (0) N/A N/A
Jan. 24, 2020, 8 a.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A 1.0 μg/m3 (1) N/A 31.0
 
Jan. 24, 2020, 1 a.m. 3.4 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) N/A 3.0 μg/m3 (3) N/A 36.0
 
Jan. 24, 2020, midnight 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 57.0 ppb (44) N/A 5.0 μg/m3 (5) N/A 44.0
 
Jan. 23, 2020, 11 p.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 59.0 ppb (45) N/A 5.0 μg/m3 (5) N/A 45.0
 
Jan. 23, 2020, 10 p.m. 3.2 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 59.0 ppb (45) N/A 5.0 μg/m3 (5) N/A 45.0
 
Jan. 23, 2020, 9 p.m. 4.2 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 55.0 ppb (42) N/A 6.0 μg/m3 (5) N/A 42.0
 
Jan. 23, 2020, 8 p.m. 3.0 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) N/A 9.0 μg/m3 (8) N/A 41.0
 
Jan. 23, 2020, 7 p.m. 3.6 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) N/A 36.0
 
Jan. 23, 2020, 6 p.m. 25.1 ppb (23) 14.5 ppb (13) N/A 11.0 ppb (10) N/A N/A 43.0 ppb (33) N/A 10.0 μg/m3 (9) N/A 33.0
 
Jan. 23, 2020, 5 p.m. 8.2 ppb (8) 4.7 ppb (4) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) N/A 32.0
 
Jan. 23, 2020, 4 p.m. 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) N/A 32.0
 
Jan. 23, 2020, 3 p.m. 4.0 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A 4.0 μg/m3 (4) N/A 30.0
 
Jan. 23, 2020, 2 p.m. 2.0 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) N/A 32.0
 
Jan. 23, 2020, 1 p.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A 0.0 μg/m3 (0) N/A 32.0
 
Jan. 23, 2020, noon 3.2 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A -4.0 μg/m3 (0) N/A 32.0
 
Jan. 23, 2020, 11 a.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 1.0 μg/m3 (1) N/A 34.0
 
Jan. 23, 2020, 10 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) N/A 34.0
 
Jan. 23, 2020, 9 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 4.0 μg/m3 (4) N/A 35.0
 
Jan. 23, 2020, 8 a.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A 3.0 μg/m3 (3) N/A 35.0
 
Jan. 23, 2020, 7 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A 1.0 μg/m3 (1) N/A 35.0
 
Jan. 23, 2020, 6 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A 0.0 μg/m3 (0) N/A 37.0
 
Jan. 23, 2020, 5 a.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A 3.0 μg/m3 (3) N/A 37.0
 
Jan. 23, 2020, 4 a.m. 0.5 ppb (0) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 1.0 μg/m3 (1) N/A 37.0
 
Jan. 23, 2020, 3 a.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
Jan. 23, 2020, 2 a.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
Jan. 23, 2020, 1 a.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A -3.0 μg/m3 (0) N/A 37.0
 
Jan. 23, 2020, midnight 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 0.0 μg/m3 (0) N/A 37.0
 
Jan. 22, 2020, 11 p.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A -2.0 μg/m3 (0) N/A 38.0
 
Jan. 22, 2020, 10 p.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 2.0 μg/m3 (2) N/A 38.0
 
Jan. 22, 2020, 9 p.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A 4.0 μg/m3 (4) N/A 40.0
 
Jan. 22, 2020, 8 p.m. 1.6 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A 3.0 μg/m3 (3) N/A 40.0
 
Jan. 22, 2020, 7 p.m. 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A 1.0 μg/m3 (1) N/A 40.0
 
Jan. 22, 2020, 6 p.m. 2.0 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A 2.0 μg/m3 (2) N/A 41.0
 
Jan. 22, 2020, 5 p.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A 1.0 μg/m3 (1) N/A 41.0
 
Jan. 22, 2020, 4 p.m. 2.7 ppb (3) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) N/A 5.0 μg/m3 (5) N/A 40.0
 
Jan. 22, 2020, 3 p.m. 4.0 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) N/A 9.0 μg/m3 (8) N/A 38.0
 
Jan. 22, 2020, 2 p.m. 3.7 ppb (3) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 55.0 ppb (42) N/A 8.0 μg/m3 (7) N/A 42.0
 
Jan. 22, 2020, 1 p.m. 4.5 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 58.0 ppb (45) N/A 11.0 μg/m3 (10) N/A 45.0
 
Jan. 22, 2020, noon 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 56.0 ppb (43) N/A 10.0 μg/m3 (9) N/A 43.0
 
Jan. 22, 2020, 11 a.m. 4.7 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 61.0 ppb (47) N/A 17.0 μg/m3 (15) N/A 47.0
 
Jan. 22, 2020, 10 a.m. 4.9 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 62.0 ppb (48) N/A 12.0 μg/m3 (11) N/A 48.0
 
Jan. 22, 2020, 9 a.m. 4.7 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 60.0 ppb (46) N/A 14.0 μg/m3 (13) N/A 46.0
 
Jan. 22, 2020, 8 a.m. 4.8 ppb (4) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 60.0 ppb (46) N/A 15.0 μg/m3 (14) N/A 46.0
 
Jan. 22, 2020, 7 a.m. 4.8 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 63.0 ppb (48) N/A 8.0 μg/m3 (7) N/A 48.0
 
Jan. 22, 2020, 6 a.m. 5.5 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 64.0 ppb (49) N/A 12.0 μg/m3 (11) N/A 49.0
 
Jan. 22, 2020, 5 a.m. 5.3 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 66.0 ppb (51) N/A 12.0 μg/m3 (11) N/A 51.0
 
Jan. 22, 2020, 4 a.m. 7.5 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 62.0 ppb (48) N/A 12.0 μg/m3 (11) N/A 48.0
 
Jan. 22, 2020, 3 a.m. 8.1 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 66.0 ppb (51) N/A 15.0 μg/m3 (14) N/A 51.0
 
Jan. 22, 2020, 2 a.m. 7.2 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 75.0 ppb (58) N/A 13.0 μg/m3 (12) N/A 58.0
 
Jan. 22, 2020, 1 a.m. 6.4 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 78.0 ppb (61) N/A 12.0 μg/m3 (11) N/A 61.0
 
Jan. 22, 2020, midnight 6.6 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 80.0 ppb (62) N/A 15.0 μg/m3 (14) N/A 62.0
 
Jan. 21, 2020, 11 p.m. 6.9 ppb (6) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 84.0 ppb (66) N/A 17.0 μg/m3 (15) N/A 66.0
 
Jan. 21, 2020, 10 p.m. 7.0 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 83.0 ppb (65) N/A 18.0 μg/m3 (16) N/A 65.0
 
Jan. 21, 2020, 9 p.m. 8.0 ppb (7) 0.4 ppb (0) N/A 8.0 ppb (7) N/A N/A 83.0 ppb (65) N/A 24.0 μg/m3 (22) N/A 65.0
 
Jan. 21, 2020, 8 p.m. 9.5 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 82.0 ppb (64) N/A 14.0 μg/m3 (13) N/A 64.0
 
Jan. 21, 2020, 7 p.m. 6.1 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 64.0 ppb (49) N/A 11.0 μg/m3 (10) N/A 49.0
 
Jan. 21, 2020, 6 p.m. 7.9 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 52.0 ppb (40) N/A 3.0 μg/m3 (3) N/A 40.0
 
Jan. 21, 2020, 5 p.m. 9.4 ppb (9) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A 47.0 ppb (36) N/A 16.0 μg/m3 (15) N/A 36.0
 
Jan. 21, 2020, 4 p.m. 5.8 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (35) N/A 8.0 μg/m3 (7) N/A 35.0
 
Jan. 21, 2020, 3 p.m. 4.7 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) N/A 33.0
 
Jan. 21, 2020, 2 p.m. 4.0 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) N/A 8.0 μg/m3 (7) N/A 35.0
 
Jan. 21, 2020, 1 p.m. 6.0 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) N/A 36.0
 
Jan. 21, 2020, noon 4.0 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) N/A 8.0 μg/m3 (7) N/A 37.0
 
Jan. 21, 2020, 11 a.m. 3.1 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) N/A 7.0 μg/m3 (6) N/A 38.0
 
Jan. 21, 2020, 10 a.m. 5.0 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (38) N/A 4.0 μg/m3 (4) N/A 38.0
 
Jan. 21, 2020, 9 a.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
 
Jan. 21, 2020, 8 a.m. 5.8 ppb (5) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 53.0 ppb (41) N/A 5.0 μg/m3 (5) N/A 41.0
 
Jan. 21, 2020, 7 a.m. 4.1 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 51.0 ppb (39) N/A 8.0 μg/m3 (7) N/A 39.0
 
Jan. 21, 2020, 6 a.m. 3.4 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 52.0 ppb (40) N/A 6.0 μg/m3 (5) N/A 40.0
 
Jan. 21, 2020, 5 a.m. 5.2 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 57.0 ppb (44) N/A 9.0 μg/m3 (8) N/A 44.0