ID: 1761

AQSQID: 560350099

Site Name: Boulder

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

Updated: Jan. 25, 2021, 3:32 a.m.

Location: Boulder (Paradise Rd), WY

Reporting: True, Located: True

Current AQI: 32.0

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. 25, 2021, 1 a.m. 1.0 ppb (1) -0.3 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A -1.0 μg/m3 (0) N/A 32.0
 
Jan. 25, 2021, midnight 1.4 ppb (2) -0.1 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A -3.0 μg/m3 (0) N/A 32.0
 
Jan. 24, 2021, 11 p.m. 1.4 ppb (2) 0.2 ppb (1) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A 1.0 μg/m3 (1) N/A 34.0
 
Jan. 24, 2021, 10 p.m. 1.3 ppb (2) 0.1 ppb (1) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 5.0 μg/m3 (5) N/A 35.0
 
Jan. 24, 2021, 9 p.m. 1.3 ppb (2) -0.2 ppb (0) 1.5 ppb (2) 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A 6.0 μg/m3 (6) N/A 37.0
 
Jan. 24, 2021, 8 p.m. 1.8 ppb (2) 0.3 ppb (1) 1.5 ppb (2) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 4.0 μg/m3 (4) N/A 35.0
 
Jan. 24, 2021, 7 p.m. 1.6 ppb (2) 0.2 ppb (1) 1.6 ppb (2) 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A 5.0 μg/m3 (5) N/A 32.0
 
Jan. 24, 2021, 6 p.m. 1.7 ppb (2) 0.3 ppb (1) 1.6 ppb (2) 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A 6.0 μg/m3 (6) N/A 30.0
 
Jan. 24, 2021, 5 p.m. 2.8 ppb (3) 1.1 ppb (2) 2.5 ppb (3) 2.0 ppb (2) N/A N/A 27.0 ppb (25) N/A 5.0 μg/m3 (5) N/A 25.0
 
Jan. 24, 2021, 4 p.m. 1.8 ppb (2) 0.4 ppb (1) 1.8 ppb (2) 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A 2.0 μg/m3 (2) N/A 27.0
 
Jan. 24, 2021, 3 p.m. 1.2 ppb (2) 0.0 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A -1.0 μg/m3 (0) N/A 27.0
 
Jan. 24, 2021, 2 p.m. 1.0 ppb (1) -0.1 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A 0.0 μg/m3 (0) N/A 28.0
 
Jan. 24, 2021, 1 p.m. 1.5 ppb (2) -0.1 ppb (0) 1.5 ppb (2) 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A 3.0 μg/m3 (3) N/A 25.0
 
Jan. 24, 2021, noon 1.7 ppb (2) -0.1 ppb (0) 1.7 ppb (2) 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A 1.0 μg/m3 (1) N/A 26.0
 
Jan. 24, 2021, 11 a.m. 1.1 ppb (2) -0.4 ppb (0) 1.3 ppb (2) 2.0 ppb (2) N/A N/A 25.0 ppb (24) N/A -1.0 μg/m3 (0) N/A 24.0
 
Jan. 24, 2021, 10 a.m. 0.9 ppb (1) -0.4 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 25.0 ppb (24) N/A 0.0 μg/m3 (0) N/A 24.0
 
Jan. 24, 2021, 9 a.m. 0.9 ppb (1) -0.4 ppb (0) 1.7 ppb (2) 1.0 ppb (1) N/A N/A 27.0 ppb (25) N/A 1.0 μg/m3 (1) N/A 25.0
 
Jan. 24, 2021, 8 a.m. 0.4 ppb (1) -0.5 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 28.0 ppb (26) N/A 4.0 μg/m3 (4) N/A 26.0
 
Jan. 24, 2021, 7 a.m. 0.6 ppb (1) -0.2 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A 4.0 μg/m3 (4) N/A 28.0
 
Jan. 24, 2021, 6 a.m. 0.4 ppb (1) -0.3 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A 2.0 μg/m3 (2) N/A 28.0
 
Jan. 24, 2021, 5 a.m. 0.5 ppb (1) -0.2 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A 5.0 μg/m3 (5) N/A 29.0
 
Jan. 24, 2021, 4 a.m. 0.4 ppb (1) -0.3 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A 1.0 μg/m3 (1) N/A 29.0
 
Jan. 24, 2021, 3 a.m. 0.6 ppb (1) -0.2 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A 2.0 μg/m3 (2) N/A 29.0
 
Jan. 24, 2021, 2 a.m. 1.0 ppb (1) -0.1 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A 3.0 μg/m3 (3) N/A 29.0
 
Jan. 24, 2021, 1 a.m. 1.3 ppb (2) -0.1 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A 2.0 μg/m3 (2) N/A 28.0
 
Jan. 24, 2021, midnight 1.5 ppb (2) -0.1 ppb (0) 1.3 ppb (2) 2.0 ppb (2) N/A N/A 31.0 ppb (29) N/A 4.0 μg/m3 (4) N/A 29.0
 
Jan. 23, 2021, 11 p.m. 1.3 ppb (2) 0.2 ppb (1) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A 2.0 μg/m3 (2) N/A 31.0
 
Jan. 23, 2021, 10 p.m. 1.2 ppb (2) -0.1 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A 5.0 μg/m3 (5) N/A 32.0
 
Jan. 23, 2021, 9 p.m. 1.1 ppb (2) 0.1 ppb (1) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A 7.0 μg/m3 (7) N/A 33.0
 
Jan. 23, 2021, 8 p.m. 1.7 ppb (2) 0.2 ppb (1) 1.5 ppb (2) 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A 5.0 μg/m3 (5) N/A 33.0
 
Jan. 23, 2021, 7 p.m. 2.1 ppb (2) 0.2 ppb (1) 1.9 ppb (2) 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A 3.0 μg/m3 (3) N/A 32.0
 
Jan. 23, 2021, 6 p.m. 2.6 ppb (3) 0.6 ppb (1) 2.1 ppb (2) 2.0 ppb (2) N/A N/A 30.0 ppb (28) N/A 1.0 μg/m3 (1) N/A 28.0
 
Jan. 23, 2021, 5 p.m. 2.8 ppb (3) 0.1 ppb (1) 3.0 ppb (3) 3.0 ppb (3) N/A N/A 27.0 ppb (25) N/A 2.0 μg/m3 (2) N/A 25.0
 
Jan. 23, 2021, 4 p.m. 1.3 ppb (2) 0.1 ppb (1) 1.5 ppb (2) 1.0 ppb (1) N/A N/A 26.0 ppb (25) N/A 6.0 μg/m3 (6) N/A 25.0
 
Jan. 23, 2021, 3 p.m. 1.0 ppb (1) -0.1 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A 9.0 μg/m3 (9) N/A 27.0
 
Jan. 23, 2021, 2 p.m. 1.1 ppb (2) -0.2 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A 7.0 μg/m3 (7) N/A 27.0
 
Jan. 23, 2021, 1 p.m. 1.6 ppb (2) -0.1 ppb (0) 1.6 ppb (2) 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A 0.0 μg/m3 (0) N/A 27.0
 
Jan. 23, 2021, noon 0.9 ppb (1) -0.4 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A 1.0 μg/m3 (1) N/A 28.0
 
Jan. 23, 2021, 11 a.m. 0.7 ppb (1) 0.0 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A 3.0 μg/m3 (3) N/A 31.0
 
Jan. 23, 2021, 10 a.m. 0.5 ppb (1) -0.2 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A 1.0 μg/m3 (1) N/A 31.0
 
Jan. 23, 2021, 9 a.m. 0.6 ppb (1) -0.1 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A 0.0 μg/m3 (0) N/A 30.0
 
Jan. 23, 2021, 8 a.m. 0.5 ppb (1) -0.2 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A 0.0 μg/m3 (0) N/A 29.0
 
Jan. 23, 2021, 7 a.m. 0.7 ppb (1) 0.0 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A 2.0 μg/m3 (2) N/A 28.0
 
Jan. 23, 2021, 6 a.m. 1.5 ppb (2) -0.3 ppb (0) 1.9 ppb (2) 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A 6.0 μg/m3 (6) N/A 26.0
 
Jan. 23, 2021, 5 a.m. 1.9 ppb (2) -0.4 ppb (0) 2.3 ppb (3) 2.0 ppb (2) N/A N/A 27.0 ppb (25) N/A 3.0 μg/m3 (3) N/A 25.0
 
Jan. 23, 2021, 4 a.m. 1.1 ppb (2) -0.3 ppb (0) 1.5 ppb (2) 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A 1.0 μg/m3 (1) N/A 27.0
 
Jan. 23, 2021, 3 a.m. 0.7 ppb (1) -0.1 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A 2.0 μg/m3 (2) N/A 31.0
 
Jan. 23, 2021, 2 a.m. 0.9 ppb (1) -0.3 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A 1.0 μg/m3 (1) N/A 31.0
 
Jan. 23, 2021, 1 a.m. 0.7 ppb (1) -0.2 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A 1.0 μg/m3 (1) N/A 32.0
 
Jan. 23, 2021, midnight 0.8 ppb (1) 0.0 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A 4.0 μg/m3 (4) N/A 33.0
 
Jan. 22, 2021, 11 p.m. 0.6 ppb (1) -0.1 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 3.0 μg/m3 (3) N/A 35.0
 
Jan. 22, 2021, 10 p.m. 1.3 ppb (2) 0.0 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 0.0 μg/m3 (0) N/A 35.0
 
Jan. 22, 2021, 9 p.m. 1.9 ppb (2) -0.1 ppb (0) 2.3 ppb (3) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A 2.0 μg/m3 (2) N/A 36.0
 
Jan. 22, 2021, 8 p.m. 3.1 ppb (3) 0.6 ppb (1) 3.1 ppb (3) 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A 6.0 μg/m3 (6) N/A 35.0
 
Jan. 22, 2021, 7 p.m. 3.0 ppb (3) 0.7 ppb (1) 3.1 ppb (3) 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A 10.0 μg/m3 (10) N/A 34.0
 
Jan. 22, 2021, 6 p.m. 3.3 ppb (4) 1.0 ppb (1) 3.3 ppb (4) 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A 10.0 μg/m3 (10) N/A 26.0
 
Jan. 22, 2021, 5 p.m. 4.2 ppb (4) 1.7 ppb (2) 4.2 ppb (4) 3.0 ppb (3) N/A N/A 24.0 ppb (23) N/A 1.0 μg/m3 (1) N/A 23.0
 
Jan. 22, 2021, 4 p.m. 3.0 ppb (3) 0.9 ppb (1) 3.0 ppb (3) 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A 4.0 μg/m3 (4) N/A 21.0
 
Jan. 22, 2021, 3 p.m. 2.8 ppb (3) 0.3 ppb (1) 3.1 ppb (3) 3.0 ppb (3) N/A N/A 23.0 ppb (22) N/A 4.0 μg/m3 (4) N/A 22.0
 
Jan. 22, 2021, 2 p.m. 1.4 ppb (2) 0.0 ppb (0) 1.5 ppb (2) 1.0 ppb (1) N/A N/A 23.0 ppb (22) N/A -3.0 μg/m3 (0) N/A 22.0
 
Jan. 22, 2021, 1 p.m. 2.2 ppb (3) -0.4 ppb (0) 2.5 ppb (3) 3.0 ppb (3) N/A N/A 23.0 ppb (22) N/A -1.0 μg/m3 (0) N/A 22.0
 
Jan. 22, 2021, noon 1.6 ppb (2) -0.2 ppb (0) 1.7 ppb (2) 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A 1.0 μg/m3 (1) N/A 23.0
 
Jan. 22, 2021, 11 a.m. 1.3 ppb (2) -0.3 ppb (0) 1.5 ppb (2) 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A 1.0 μg/m3 (1) N/A 26.0
 
Jan. 22, 2021, 10 a.m. 1.0 ppb (1) -0.4 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 26.0 ppb (25) N/A 2.0 μg/m3 (2) N/A 25.0
 
Jan. 22, 2021, 9 a.m. 1.1 ppb (2) -0.1 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A 4.0 μg/m3 (4) N/A 27.0
 
Jan. 22, 2021, 8 a.m. 0.6 ppb (1) -0.3 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A -2.0 μg/m3 (0) N/A 29.0
 
Jan. 22, 2021, 7 a.m. 1.7 ppb (2) -0.4 ppb (0) 2.1 ppb (2) 2.0 ppb (2) N/A N/A 30.0 ppb (28) N/A 4.0 μg/m3 (4) N/A 28.0
 
Jan. 22, 2021, 6 a.m. 3.0 ppb (3) 0.2 ppb (1) 2.9 ppb (3) 3.0 ppb (3) N/A N/A 30.0 ppb (28) N/A 8.0 μg/m3 (8) N/A 28.0
 
Jan. 22, 2021, 5 a.m. 2.2 ppb (3) -0.1 ppb (0) 2.7 ppb (3) 2.0 ppb (2) N/A N/A 32.0 ppb (30) N/A 4.0 μg/m3 (4) N/A 30.0
 
Jan. 22, 2021, 4 a.m. 0.8 ppb (1) -0.3 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A 3.0 μg/m3 (3) N/A 31.0
 
Jan. 22, 2021, 3 a.m. 0.8 ppb (1) -0.2 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 2.0 μg/m3 (2) N/A 35.0
 
Jan. 22, 2021, 2 a.m. 1.0 ppb (1) -0.2 ppb (0) 1.6 ppb (2) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A -1.0 μg/m3 (0) N/A 36.0
 
Jan. 22, 2021, 1 a.m. 1.3 ppb (2) 0.0 ppb (0) 1.9 ppb (2) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 5.0 μg/m3 (5) N/A 38.0
 
Jan. 22, 2021, midnight 0.8 ppb (1) -0.2 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 7.0 μg/m3 (7) N/A 38.0
 
Jan. 21, 2021, 11 p.m. 0.6 ppb (1) -0.1 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 4.0 μg/m3 (4) N/A 38.0
 
Jan. 21, 2021, 10 p.m. 0.7 ppb (1) 0.0 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 6.0 μg/m3 (6) N/A 39.0
 
Jan. 21, 2021, 9 p.m. 1.0 ppb (1) -0.1 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 7.0 μg/m3 (7) N/A 39.0
 
Jan. 21, 2021, 8 p.m. 1.3 ppb (2) -0.1 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 10.0 μg/m3 (10) N/A 38.0
 
Jan. 21, 2021, 7 p.m. 2.9 ppb (3) 0.6 ppb (1) 3.0 ppb (3) 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A 3.0 μg/m3 (3) N/A 37.0
 
Jan. 21, 2021, 6 p.m. 4.0 ppb (4) 1.4 ppb (2) 3.8 ppb (4) 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A 1.0 μg/m3 (1) N/A 32.0
 
Jan. 21, 2021, 5 p.m. 3.8 ppb (4) 1.4 ppb (2) 3.7 ppb (4) 2.0 ppb (2) N/A N/A 30.0 ppb (28) N/A 1.0 μg/m3 (1) N/A 28.0
 
Jan. 21, 2021, 4 p.m. 2.0 ppb (2) 0.3 ppb (1) 2.2 ppb (3) 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A 4.0 μg/m3 (4) N/A 31.0
 
Jan. 21, 2021, 3 p.m. 0.8 ppb (1) -0.2 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 3.0 μg/m3 (3) N/A 36.0
 
Jan. 21, 2021, 2 p.m. 0.9 ppb (1) -0.4 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A -1.0 μg/m3 (0) N/A 34.0
 
Jan. 21, 2021, 1 p.m. 0.5 ppb (1) -0.2 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 4.0 μg/m3 (4) N/A 36.0
 
Jan. 21, 2021, noon 0.5 ppb (1) -0.2 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 4.0 μg/m3 (4) N/A 38.0
 
Jan. 21, 2021, 11 a.m. 0.7 ppb (1) -0.2 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A 1.0 μg/m3 (1) N/A 37.0
 
Jan. 21, 2021, 10 a.m. 1.1 ppb (2) -0.2 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A 0.0 μg/m3 (0) N/A 34.0
 
Jan. 21, 2021, 9 a.m. 1.4 ppb (2) -0.1 ppb (0) 1.3 ppb (2) 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A 2.0 μg/m3 (2) N/A 35.0
 
Jan. 21, 2021, 8 a.m. 0.6 ppb (1) -0.1 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 7.0 μg/m3 (7) N/A 38.0
 
Jan. 21, 2021, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 14.0 μg/m3 (13) N/A 38.0
 
Jan. 21, 2021, 6 a.m. 0.9 ppb (1) -0.1 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 2.0 μg/m3 (2) N/A 39.0
 
Jan. 21, 2021, 5 a.m. 0.7 ppb (1) -0.1 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 2.0 μg/m3 (2) N/A 39.0
 
Jan. 21, 2021, 4 a.m. 0.8 ppb (1) -0.1 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A -1.0 μg/m3 (0) N/A 39.0
 
Jan. 21, 2021, 3 a.m. 0.6 ppb (1) -0.2 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A -1.0 μg/m3 (0) N/A 40.0
 
Jan. 21, 2021, 2 a.m. 0.7 ppb (1) -0.2 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 5.0 μg/m3 (5) N/A 40.0
 
Jan. 21, 2021, 1 a.m. 1.2 ppb (2) 0.1 ppb (1) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 2.0 μg/m3 (2) N/A 39.0
 
Jan. 21, 2021, midnight 1.3 ppb (2) -0.2 ppb (0) 1.4 ppb (2) 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A -3.0 μg/m3 (0) N/A 38.0
 
Jan. 20, 2021, 11 p.m. 0.8 ppb (1) -0.2 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 0.0 μg/m3 (0) N/A 41.0
 
Jan. 20, 2021, 10 p.m. 0.8 ppb (1) -0.4 ppb (0) 1.5 ppb (2) 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A 0.0 μg/m3 (0) N/A 43.0
 
Jan. 20, 2021, 9 p.m. 1.1 ppb (2) -0.1 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A 2.0 μg/m3 (2) N/A 42.0
 
Jan. 20, 2021, 8 p.m. 1.4 ppb (2) 0.1 ppb (1) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 5.0 μg/m3 (5) N/A 41.0
 
Jan. 20, 2021, 7 p.m. 1.9 ppb (2) 0.5 ppb (1) 1.8 ppb (2) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 5.0 μg/m3 (5) N/A 38.0
 
Jan. 20, 2021, 6 p.m. 2.4 ppb (3) 0.9 ppb (1) 2.4 ppb (3) 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A 5.0 μg/m3 (5) N/A 37.0
 
Jan. 20, 2021, 5 p.m. 4.6 ppb (5) 2.3 ppb (3) 4.7 ppb (5) 2.0 ppb (2) N/A N/A 30.0 ppb (28) N/A 5.0 μg/m3 (5) N/A 28.0
 
Jan. 20, 2021, 4 p.m. 2.8 ppb (3) 1.1 ppb (2) 2.8 ppb (3) 2.0 ppb (2) N/A N/A 31.0 ppb (29) N/A 1.0 μg/m3 (1) N/A 29.0
 
Jan. 20, 2021, 3 p.m. 1.6 ppb (2) -0.1 ppb (0) 2.0 ppb (2) 2.0 ppb (2) N/A N/A 32.0 ppb (30) N/A -2.0 μg/m3 (0) N/A 30.0
 
Jan. 20, 2021, 2 p.m. 1.7 ppb (2) -0.2 ppb (0) 1.8 ppb (2) 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A -3.0 μg/m3 (0) N/A 32.0
 
Jan. 20, 2021, 1 p.m. 1.2 ppb (2) -0.3 ppb (0) 1.4 ppb (2) 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A -1.0 μg/m3 (0) N/A 31.0
 
Jan. 20, 2021, noon 3.6 ppb (4) -0.1 ppb (0) 3.8 ppb (4) 4.0 ppb (4) N/A N/A 27.0 ppb (25) N/A -1.0 μg/m3 (0) N/A 25.0
 
Jan. 20, 2021, 11 a.m. 3.6 ppb (4) -0.2 ppb (0) 3.7 ppb (4) 4.0 ppb (4) N/A N/A 28.0 ppb (26) N/A 1.0 μg/m3 (1) N/A 26.0
 
Jan. 20, 2021, 10 a.m. 1.1 ppb (2) 0.0 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A -4.0 μg/m3 (0) N/A 31.0
 
Jan. 20, 2021, 9 a.m. 0.6 ppb (1) -0.1 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A N/A 34.0
 
Jan. 20, 2021, 8 a.m. 0.4 ppb (1) -0.4 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A -2.0 μg/m3 (0) N/A 33.0
 
Jan. 20, 2021, 7 a.m. 0.6 ppb (1) -0.1 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A 17.0 μg/m3 (16) N/A 34.0
 
Jan. 20, 2021, 6 a.m. 1.3 ppb (2) -0.2 ppb (0) 1.3 ppb (2) 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Jan. 20, 2021, 5 a.m. 1.5 ppb (2) -0.4 ppb (0) 1.7 ppb (2) 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A -3.0 μg/m3 (0) N/A 32.0
 
Jan. 20, 2021, 4 a.m. 0.9 ppb (1) -0.2 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A 1.0 μg/m3 (1) N/A 34.0
 
Jan. 20, 2021, 3 a.m. 3.1 ppb (3) -0.2 ppb (0) 3.3 ppb (4) 3.0 ppb (3) N/A N/A 33.0 ppb (31) N/A 3.0 μg/m3 (3) N/A 31.0
 
Jan. 20, 2021, 2 a.m. 1.1 ppb (2) -0.2 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A -1.0 μg/m3 (0) N/A 35.0
 
Jan. 20, 2021, 1 a.m. 0.6 ppb (1) -0.3 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A -3.0 μg/m3 (0) N/A 35.0
 
Jan. 20, 2021, midnight 0.8 ppb (1) -0.3 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 1.0 μg/m3 (1) N/A 35.0
 
Jan. 19, 2021, 11 p.m. 0.8 ppb (1) 0.0 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A -1.0 μg/m3 (0) N/A 37.0
 
Jan. 19, 2021, 10 p.m. 1.0 ppb (1) 0.1 ppb (1) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 1.0 μg/m3 (1) N/A 38.0
 
Jan. 19, 2021, 9 p.m. 1.4 ppb (2) 0.2 ppb (1) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 4.0 μg/m3 (4) N/A 38.0
 
Jan. 19, 2021, 8 p.m. 1.4 ppb (2) 0.1 ppb (1) 1.5 ppb (2) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 4.0 μg/m3 (4) N/A 38.0
 
Jan. 19, 2021, 7 p.m. 2.3 ppb (3) 0.7 ppb (1) 2.4 ppb (3) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A 4.0 μg/m3 (4) N/A 36.0
 
Jan. 19, 2021, 6 p.m. 2.6 ppb (3) 1.0 ppb (1) 2.4 ppb (3) 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A 4.0 μg/m3 (4) N/A 31.0
 
Jan. 19, 2021, 5 p.m. 2.1 ppb (2) 1.0 ppb (1) 1.9 ppb (2) 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A 3.0 μg/m3 (3) N/A 29.0
 
Jan. 19, 2021, 4 p.m. 2.3 ppb (3) 0.9 ppb (1) 2.1 ppb (2) 1.0 ppb (1) N/A N/A 28.0 ppb (26) N/A 3.0 μg/m3 (3) N/A 26.0
 
Jan. 19, 2021, 3 p.m. 2.6 ppb (3) 0.5 ppb (1) 2.5 ppb (3) 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A 5.0 μg/m3 (5) N/A 26.0
 
Jan. 19, 2021, 2 p.m. 1.9 ppb (2) 0.1 ppb (1) 1.7 ppb (2) 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A -1.0 μg/m3 (0) N/A 27.0
 
Jan. 19, 2021, 1 p.m. 1.6 ppb (2) -0.2 ppb (0) 1.6 ppb (2) 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A -2.0 μg/m3 (0) N/A 27.0
 
Jan. 19, 2021, noon 1.9 ppb (2) -0.1 ppb (0) 1.8 ppb (2) 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A -3.0 μg/m3 (0) N/A 27.0
 
Jan. 19, 2021, 11 a.m. 2.0 ppb (2) -0.2 ppb (0) 1.9 ppb (2) 2.0 ppb (2) N/A N/A 30.0 ppb (28) N/A -4.0 μg/m3 (0) N/A 28.0
 
Jan. 19, 2021, 10 a.m. 1.6 ppb (2) -0.1 ppb (0) 1.3 ppb (2) 2.0 ppb (2) N/A N/A 30.0 ppb (28) N/A -3.0 μg/m3 (0) N/A 28.0
 
Jan. 19, 2021, 9 a.m. -0.1 ppb (0) -0.4 ppb (0) 0.2 ppb (1) 0.0 ppb (0) N/A N/A 35.0 ppb (33) N/A -3.0 μg/m3 (0) N/A 33.0
 
Jan. 19, 2021, 8 a.m. 0.5 ppb (1) -0.1 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A -2.0 μg/m3 (0) N/A 32.0
 
Jan. 19, 2021, 7 a.m. 0.7 ppb (1) -0.1 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A -3.0 μg/m3 (0) N/A 31.0
 
Jan. 19, 2021, 6 a.m. 0.5 ppb (1) -0.2 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A -4.0 μg/m3 (0) N/A 31.0
 
Jan. 19, 2021, 5 a.m. 1.7 ppb (2) -0.2 ppb (0) 1.6 ppb (2) 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A -2.0 μg/m3 (0) N/A 32.0
 
Jan. 19, 2021, 4 a.m. 0.8 ppb (1) -0.2 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A -1.0 μg/m3 (0) N/A 33.0
 
Jan. 19, 2021, 3 a.m. 0.1 ppb (1) -0.4 ppb (0) 0.4 ppb (1) 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A 0.0 μg/m3 (0) N/A 35.0
 
Jan. 19, 2021, 2 a.m. 0.5 ppb (1) -0.2 ppb (0) 0.4 ppb (1) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 1.0 μg/m3 (1) N/A 35.0
 
Jan. 19, 2021, 1 a.m. 0.2 ppb (1) -0.2 ppb (0) 0.3 ppb (1) 0.0 ppb (0) N/A N/A 36.0 ppb (34) N/A 0.0 μg/m3 (0) N/A 34.0
 
Jan. 19, 2021, midnight 0.0 ppb (0) -0.4 ppb (0) 0.3 ppb (1) 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A -3.0 μg/m3 (0) N/A 35.0
 
Jan. 18, 2021, 11 p.m. 0.1 ppb (1) -0.3 ppb (0) 0.1 ppb (1) 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A 0.0 μg/m3 (0) N/A 35.0
 
Jan. 18, 2021, 10 p.m. 0.4 ppb (1) 0.1 ppb (1) 0.1 ppb (1) 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A 4.0 μg/m3 (4) N/A 37.0
 
Jan. 18, 2021, 9 p.m. 0.3 ppb (1) 0.0 ppb (0) 0.1 ppb (1) 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A 4.0 μg/m3 (4) N/A 37.0
 
Jan. 18, 2021, 8 p.m. 0.2 ppb (1) -0.2 ppb (0) 0.1 ppb (1) 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A 6.0 μg/m3 (6) N/A 37.0
 
Jan. 18, 2021, 7 p.m. 0.2 ppb (1) -0.3 ppb (0) 0.2 ppb (1) 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A 2.0 μg/m3 (2) N/A 37.0
 
Jan. 18, 2021, 6 p.m. 0.2 ppb (1) -0.3 ppb (0) 0.2 ppb (1) 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A 0.0 μg/m3 (0) N/A 37.0
 
Jan. 18, 2021, 5 p.m. 0.3 ppb (1) -0.2 ppb (0) 0.2 ppb (1) 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A 2.0 μg/m3 (2) N/A 37.0
 
Jan. 18, 2021, 4 p.m. 0.2 ppb (1) -0.2 ppb (0) 0.2 ppb (1) 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A 2.0 μg/m3 (2) N/A 37.0
 
Jan. 18, 2021, 3 p.m. 0.6 ppb (1) -0.2 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 2.0 μg/m3 (2) N/A 35.0
 
Jan. 18, 2021, 2 p.m. 0.4 ppb (1) -0.2 ppb (0) 0.3 ppb (1) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A -1.0 μg/m3 (0) N/A 35.0
 
Jan. 18, 2021, 1 p.m. 0.5 ppb (1) -0.2 ppb (0) 0.3 ppb (1) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A -4.0 μg/m3 (0) N/A 35.0
 
Jan. 18, 2021, noon 0.2 ppb (1) -0.2 ppb (0) 0.2 ppb (1) 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A -2.0 μg/m3 (0) N/A 35.0
 
Jan. 18, 2021, 11 a.m. 0.3 ppb (1) 0.1 ppb (1) 0.2 ppb (1) 0.0 ppb (0) N/A N/A 38.0 ppb (36) N/A -2.0 μg/m3 (0) N/A 36.0
 
Jan. 18, 2021, 10 a.m. 0.4 ppb (1) 0.0 ppb (0) 0.2 ppb (1) 0.0 ppb (0) N/A N/A 38.0 ppb (36) N/A -1.0 μg/m3 (0) N/A 36.0
 
Jan. 18, 2021, 9 a.m. 0.2 ppb (1) -0.2 ppb (0) 0.3 ppb (1) 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A 0.0 μg/m3 (0) N/A 37.0
 
Jan. 18, 2021, 8 a.m. -0.1 ppb (0) -0.3 ppb (0) 0.3 ppb (1) 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A 0.0 μg/m3 (0) N/A 37.0
 
Jan. 18, 2021, 7 a.m. 0.2 ppb (1) -0.2 ppb (0) 0.3 ppb (1) 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A -2.0 μg/m3 (0) N/A 37.0
 
Jan. 18, 2021, 6 a.m. 0.2 ppb (1) -0.2 ppb (0) 0.4 ppb (1) 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A -1.0 μg/m3 (0) N/A 37.0
 
Jan. 18, 2021, 5 a.m. 0.4 ppb (1) -0.1 ppb (0) 0.6 ppb (1) 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A 3.0 μg/m3 (3) N/A 37.0
 
Jan. 18, 2021, 4 a.m. 0.4 ppb (1) -0.2 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 3.0 μg/m3 (3) N/A 36.0
 
Jan. 18, 2021, 3 a.m. 0.3 ppb (1) -0.1 ppb (0) 0.6 ppb (1) 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A 2.0 μg/m3 (2) N/A 35.0
 
Jan. 18, 2021, 2 a.m. 0.3 ppb (1) -0.3 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 2.0 μg/m3 (2) N/A 36.0