ID: 1761

AQSQID: 560350099

Site Name: Boulder

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

Updated: March 4, 2021, 6:32 p.m.

Location: Boulder (Paradise Rd), WY

Reporting: True, Located: True

Current AQI: 36.0

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
Feb. 25, 2021, 8 a.m. 0.4 ppb (1) -0.4 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A -2.0 μg/m3 (0) N/A 39.0
 
Feb. 25, 2021, 7 a.m. 0.5 ppb (1) -0.2 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A -2.0 μg/m3 (0) N/A 40.0
 
Feb. 25, 2021, 6 a.m. 0.5 ppb (1) -0.3 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A -2.0 μg/m3 (0) N/A 40.0
 
Feb. 25, 2021, 5 a.m. 0.6 ppb (1) -0.4 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 3.0 μg/m3 (3) N/A 40.0
 
Feb. 25, 2021, 4 a.m. 1.1 ppb (2) -0.1 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 3.0 μg/m3 (3) N/A 41.0
 
Feb. 25, 2021, 3 a.m. 0.7 ppb (1) -0.2 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A -2.0 μg/m3 (0) N/A 40.0
 
Feb. 25, 2021, 2 a.m. 0.7 ppb (1) -0.1 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A -4.0 μg/m3 (0) N/A 41.0
 
Feb. 25, 2021, 1 a.m. 0.6 ppb (1) -0.5 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A -2.0 μg/m3 (0) N/A 42.0
 
Feb. 25, 2021, midnight 1.3 ppb (2) 0.0 ppb (0) 1.9 ppb (2) 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A 2.0 μg/m3 (2) N/A 44.0
 
Feb. 24, 2021, 11 p.m. 0.9 ppb (1) 0.1 ppb (1) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A 2.0 μg/m3 (2) N/A 44.0
 
Feb. 24, 2021, 10 p.m. 1.1 ppb (2) 0.3 ppb (1) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A -2.0 μg/m3 (0) N/A 44.0
 
Feb. 24, 2021, 9 p.m. 1.1 ppb (2) 0.0 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A 0.0 μg/m3 (0) N/A 45.0
 
Feb. 24, 2021, 8 p.m. 1.5 ppb (2) -0.1 ppb (0) 1.6 ppb (2) 2.0 ppb (2) N/A N/A 49.0 ppb (46) N/A 6.0 μg/m3 (6) N/A 46.0
 
Feb. 24, 2021, 7 p.m. 3.1 ppb (3) 0.2 ppb (1) 3.5 ppb (4) 3.0 ppb (3) N/A N/A 50.0 ppb (47) N/A 8.0 μg/m3 (8) N/A 47.0
 
Feb. 24, 2021, 6 p.m. 4.1 ppb (4) 1.2 ppb (2) 4.3 ppb (5) 3.0 ppb (3) N/A N/A 45.0 ppb (42) N/A 10.0 μg/m3 (10) N/A 42.0
 
Feb. 24, 2021, 5 p.m. 5.0 ppb (5) 1.8 ppb (2) 5.4 ppb (6) 3.0 ppb (3) N/A N/A 41.0 ppb (38) N/A 7.0 μg/m3 (7) N/A 38.0
 
Feb. 24, 2021, 4 p.m. 4.9 ppb (5) 2.0 ppb (2) 4.9 ppb (5) 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A 7.0 μg/m3 (7) N/A 35.0
 
Feb. 24, 2021, 3 p.m. 2.5 ppb (3) 0.6 ppb (1) 2.4 ppb (3) 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A 4.0 μg/m3 (4) N/A 37.0
 
Feb. 24, 2021, 2 p.m. 3.5 ppb (4) 0.1 ppb (1) 3.6 ppb (4) 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A 3.0 μg/m3 (3) N/A 37.0
 
Feb. 24, 2021, 1 p.m. 1.5 ppb (2) -0.3 ppb (0) 1.9 ppb (2) 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A 2.0 μg/m3 (2) N/A 38.0
 
Feb. 24, 2021, noon 1.2 ppb (2) 0.1 ppb (1) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A -2.0 μg/m3 (0) N/A 40.0
 
Feb. 24, 2021, 11 a.m. 0.9 ppb (1) -0.2 ppb (0) 1.5 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 0.0 μg/m3 (0) N/A 39.0
 
Feb. 24, 2021, 10 a.m. 1.0 ppb (1) -0.3 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 2.0 μg/m3 (2) N/A 39.0
 
Feb. 24, 2021, 9 a.m. 1.3 ppb (2) -0.3 ppb (0) 1.6 ppb (2) 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A 0.0 μg/m3 (0) N/A 40.0
 
Feb. 24, 2021, 8 a.m. 1.7 ppb (2) 0.0 ppb (0) 1.4 ppb (2) 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A 1.0 μg/m3 (1) N/A 39.0
 
Feb. 24, 2021, 7 a.m. 1.3 ppb (2) 0.0 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 3.0 μg/m3 (3) N/A 41.0
 
Feb. 24, 2021, 6 a.m. 1.2 ppb (2) -0.4 ppb (0) 1.6 ppb (2) 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A 0.0 μg/m3 (0) N/A 40.0
 
Feb. 24, 2021, 5 a.m. 2.0 ppb (2) -0.2 ppb (0) 2.0 ppb (2) 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A 3.0 μg/m3 (3) N/A 41.0
 
Feb. 24, 2021, 4 a.m. 1.4 ppb (2) 0.0 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A 5.0 μg/m3 (5) N/A 42.0
 
Feb. 24, 2021, 3 a.m. 1.0 ppb (1) -0.1 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 0.0 μg/m3 (0) N/A 41.0
 
Feb. 24, 2021, 2 a.m. 1.1 ppb (2) -0.3 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A -3.0 μg/m3 (0) N/A 43.0
 
Feb. 24, 2021, 1 a.m. 0.9 ppb (1) -0.1 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A 0.0 μg/m3 (0) N/A 44.0
 
Feb. 24, 2021, midnight 0.8 ppb (1) -0.1 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A 1.0 μg/m3 (1) N/A 45.0
 
Feb. 23, 2021, 11 p.m. 0.7 ppb (1) 0.0 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A 2.0 μg/m3 (2) N/A 46.0
 
Feb. 23, 2021, 10 p.m. 0.8 ppb (1) -0.1 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A 3.0 μg/m3 (3) N/A 46.0
 
Feb. 23, 2021, 9 p.m. 0.5 ppb (1) -0.3 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A -2.0 μg/m3 (0) N/A 45.0
 
Feb. 23, 2021, 8 p.m. 1.0 ppb (1) -0.1 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A 3.0 μg/m3 (3) N/A 45.0
 
Feb. 23, 2021, 7 p.m. 1.1 ppb (2) -0.1 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A 10.0 μg/m3 (10) N/A 45.0
 
Feb. 23, 2021, 6 p.m. 0.7 ppb (1) -0.1 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 51.0 ppb (48) N/A 4.0 μg/m3 (4) N/A 48.0
 
Feb. 23, 2021, 5 p.m. 0.8 ppb (1) -0.1 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 51.0 ppb (48) N/A 3.0 μg/m3 (3) N/A 48.0
 
Feb. 23, 2021, 4 p.m. 1.5 ppb (2) 0.0 ppb (0) 1.8 ppb (2) 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A 4.0 μg/m3 (4) N/A 38.0
 
Feb. 23, 2021, 3 p.m. 1.1 ppb (2) -0.1 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 1.0 μg/m3 (1) N/A 38.0
 
Feb. 23, 2021, 2 p.m. 1.3 ppb (2) -0.3 ppb (0) 1.7 ppb (2) 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A 4.0 μg/m3 (4) N/A 35.0
 
Feb. 23, 2021, 1 p.m. 1.3 ppb (2) -0.1 ppb (0) 1.5 ppb (2) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 3.0 μg/m3 (3) N/A 35.0
 
Feb. 23, 2021, noon 1.2 ppb (2) -0.1 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A 2.0 μg/m3 (2) N/A 34.0
 
Feb. 23, 2021, 11 a.m. 1.0 ppb (1) -0.4 ppb (0) 1.5 ppb (2) 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A 0.0 μg/m3 (0) N/A 33.0
 
Feb. 23, 2021, 10 a.m. 1.2 ppb (2) -0.2 ppb (0) 1.5 ppb (2) 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A -2.0 μg/m3 (0) N/A 33.0
 
Feb. 23, 2021, 9 a.m. 1.4 ppb (2) -0.2 ppb (0) 1.7 ppb (2) 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A 0.0 μg/m3 (0) N/A 33.0
 
Feb. 23, 2021, 8 a.m. 1.8 ppb (2) -0.5 ppb (0) 2.1 ppb (2) 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A 1.0 μg/m3 (1) N/A 33.0
 
Feb. 23, 2021, 7 a.m. 2.6 ppb (3) -0.2 ppb (0) 2.5 ppb (3) 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A -1.0 μg/m3 (0) N/A 32.0
 
Feb. 23, 2021, 6 a.m. 2.4 ppb (3) -0.2 ppb (0) 2.4 ppb (3) 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A -2.0 μg/m3 (0) N/A 32.0
 
Feb. 23, 2021, 5 a.m. 1.9 ppb (2) 0.0 ppb (0) 1.8 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
 
Feb. 23, 2021, 4 a.m. 1.3 ppb (2) -0.3 ppb (0) 1.4 ppb (2) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A -2.0 μg/m3 (0) N/A 36.0
 
Feb. 23, 2021, 3 a.m. 1.2 ppb (2) -0.1 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A -1.0 μg/m3 (0) N/A 38.0
 
Feb. 23, 2021, 2 a.m. 0.9 ppb (1) -0.2 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A -2.0 μg/m3 (0) N/A 38.0
 
Feb. 23, 2021, 1 a.m. 0.6 ppb (1) -0.2 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A -3.0 μg/m3 (0) N/A 39.0
 
Feb. 23, 2021, midnight 0.7 ppb (1) -0.1 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A -4.0 μg/m3 (0) N/A 40.0
 
Feb. 22, 2021, 11 p.m. 0.7 ppb (1) 0.0 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A -2.0 μg/m3 (0) N/A 41.0
 
Feb. 22, 2021, 10 p.m. 0.6 ppb (1) -0.1 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 2.0 μg/m3 (2) N/A 41.0
 
Feb. 22, 2021, 9 p.m. 0.7 ppb (1) -0.2 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 3.0 μg/m3 (3) N/A 41.0
 
Feb. 22, 2021, 8 p.m. 0.9 ppb (1) -0.2 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 2.0 μg/m3 (2) N/A 41.0
 
Feb. 22, 2021, 7 p.m. 0.9 ppb (1) -0.2 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 3.0 μg/m3 (3) N/A 40.0
 
Feb. 22, 2021, 6 p.m. 1.0 ppb (1) -0.3 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 4.0 μg/m3 (4) N/A 39.0
 
Feb. 22, 2021, 5 p.m. 2.2 ppb (3) 0.4 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A 2.0 μg/m3 (2) N/A 38.0
 
Feb. 22, 2021, 4 p.m. 1.4 ppb (2) 0.1 ppb (1) 1.7 ppb (2) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 3.0 μg/m3 (3) N/A 36.0
 
Feb. 22, 2021, 3 p.m. 1.6 ppb (2) 0.2 ppb (1) 1.6 ppb (2) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 5.0 μg/m3 (5) N/A 35.0
 
Feb. 22, 2021, 2 p.m. 2.0 ppb (2) 0.0 ppb (0) 1.8 ppb (2) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A 6.0 μg/m3 (6) N/A 36.0
 
Feb. 22, 2021, 1 p.m. 1.7 ppb (2) -0.2 ppb (0) 1.7 ppb (2) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A 0.0 μg/m3 (0) N/A 36.0
 
Feb. 22, 2021, noon 1.4 ppb (2) -0.2 ppb (0) 1.4 ppb (2) 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A 3.0 μg/m3 (3) N/A 37.0
 
Feb. 22, 2021, 11 a.m. 1.0 ppb (1) -0.4 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A 3.0 μg/m3 (3) N/A 37.0
 
Feb. 22, 2021, 10 a.m. 0.7 ppb (1) -0.3 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A -2.0 μg/m3 (0) N/A 38.0
 
Feb. 22, 2021, 9 a.m. 0.5 ppb (1) -0.2 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A -2.0 μg/m3 (0) N/A 38.0
 
Feb. 22, 2021, 8 a.m. 0.9 ppb (1) -0.1 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A -1.0 μg/m3 (0) N/A 38.0
 
Feb. 22, 2021, 7 a.m. 0.5 ppb (1) -0.2 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A -1.0 μg/m3 (0) N/A 38.0
 
Feb. 22, 2021, 6 a.m. 0.6 ppb (1) -0.1 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 2.0 μg/m3 (2) N/A 39.0
 
Feb. 22, 2021, 5 a.m. 0.6 ppb (1) -0.3 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 4.0 μg/m3 (4) N/A 39.0
 
Feb. 22, 2021, 4 a.m. 0.5 ppb (1) -0.2 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 1.0 μg/m3 (1) N/A 39.0
 
Feb. 22, 2021, 3 a.m. 0.9 ppb (1) 0.1 ppb (1) 0.8 ppb (1) 1.0 ppb (1) N/A N/A N/A N/A -2.0 μg/m3 (0) N/A 1.0
 
Feb. 22, 2021, 2 a.m. 0.5 ppb (1) -0.1 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A N/A N/A -1.0 μg/m3 (0) N/A 1.0
 
Feb. 22, 2021, 1 a.m. 0.3 ppb (1) -0.4 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A N/A N/A 0.0 μg/m3 (0) N/A 1.0
 
Feb. 22, 2021, midnight 0.6 ppb (1) -0.1 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A N/A N/A -1.0 μg/m3 (0) N/A 1.0
 
Feb. 21, 2021, 11 p.m. 0.6 ppb (1) -0.2 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A N/A N/A 0.0 μg/m3 (0) N/A 1.0
 
Feb. 21, 2021, 10 p.m. 0.8 ppb (1) 0.1 ppb (1) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 6.0 μg/m3 (6) N/A 40.0
 
Feb. 21, 2021, 9 p.m. 0.8 ppb (1) 0.1 ppb (1) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 12.0 μg/m3 (12) N/A 40.0
 
Feb. 21, 2021, 8 p.m. 0.7 ppb (1) 0.0 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 10.0 μg/m3 (10) N/A 40.0
 
Feb. 21, 2021, 7 p.m. 0.5 ppb (1) -0.3 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 17.0 μg/m3 (16) N/A 40.0
 
Feb. 21, 2021, 6 p.m. 0.8 ppb (1) 0.0 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 11.0 μg/m3 (11) N/A 40.0
 
Feb. 21, 2021, 5 p.m. 0.6 ppb (1) -0.2 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 7.0 μg/m3 (7) N/A 40.0
 
Feb. 21, 2021, 4 p.m. 0.6 ppb (1) 0.0 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 8.0 μg/m3 (8) N/A 40.0
 
Feb. 21, 2021, 3 p.m. 0.8 ppb (1) -0.1 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 1.0 μg/m3 (1) N/A 39.0
 
Feb. 21, 2021, 2 p.m. 0.4 ppb (1) -0.3 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 3.0 μg/m3 (3) N/A 39.0
 
Feb. 21, 2021, 1 p.m. 0.5 ppb (1) -0.3 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 3.0 μg/m3 (3) N/A 38.0
 
Feb. 21, 2021, noon 0.6 ppb (1) -0.1 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 1.0 μg/m3 (1) N/A 39.0
 
Feb. 21, 2021, 11 a.m. 0.7 ppb (1) 0.0 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 1.0 μg/m3 (1) N/A 39.0
 
Feb. 21, 2021, 10 a.m. 0.5 ppb (1) -0.2 ppb (0) 0.7 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
 
Feb. 21, 2021, 9 a.m. 0.8 ppb (1) -0.1 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 1.0 μg/m3 (1) N/A 39.0
 
Feb. 21, 2021, 8 a.m. 0.8 ppb (1) -0.4 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 1.0 μg/m3 (1) N/A 39.0
 
Feb. 21, 2021, 7 a.m. 0.6 ppb (1) -0.1 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 1.0 μg/m3 (1) N/A 39.0
 
Feb. 21, 2021, 6 a.m. 0.5 ppb (1) -0.3 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 0.0 μg/m3 (0) N/A 39.0
 
Feb. 21, 2021, 5 a.m. 0.3 ppb (1) -0.2 ppb (0) 0.4 ppb (1) 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A -1.0 μg/m3 (0) N/A 40.0
 
Feb. 21, 2021, 4 a.m. 0.7 ppb (1) -0.1 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 1.0 μg/m3 (1) N/A 40.0
 
Feb. 21, 2021, 3 a.m. 0.8 ppb (1) 0.0 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 1.0 μg/m3 (1) N/A 40.0
 
Feb. 21, 2021, 2 a.m. 0.5 ppb (1) -0.3 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 3.0 μg/m3 (3) N/A 40.0
 
Feb. 21, 2021, 1 a.m. 0.8 ppb (1) -0.1 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 5.0 μg/m3 (5) N/A 39.0
 
Feb. 21, 2021, midnight 0.6 ppb (1) -0.1 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 1.0 μg/m3 (1) N/A 38.0
 
Feb. 20, 2021, 11 p.m. 0.6 ppb (1) -0.2 ppb (0) 0.7 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
 
Feb. 20, 2021, 10 p.m. 0.9 ppb (1) -0.1 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A N/A 39.0
 
Feb. 20, 2021, 9 p.m. 1.0 ppb (1) -0.2 ppb (0) 0.6 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
 
Feb. 20, 2021, 8 p.m. 1.4 ppb (2) 0.2 ppb (1) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 3.0 μg/m3 (3) N/A 41.0
 
Feb. 20, 2021, 7 p.m. 2.2 ppb (3) 0.2 ppb (1) 1.9 ppb (2) 2.0 ppb (2) N/A N/A 45.0 ppb (42) N/A 2.0 μg/m3 (2) N/A 42.0
 
Feb. 20, 2021, 6 p.m. 2.7 ppb (3) 0.5 ppb (1) 2.3 ppb (3) 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A 1.0 μg/m3 (1) N/A 40.0
 
Feb. 20, 2021, 5 p.m. 2.1 ppb (2) 0.5 ppb (1) 1.7 ppb (2) 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A 0.0 μg/m3 (0) N/A 37.0
 
Feb. 20, 2021, 4 p.m. 0.9 ppb (1) -0.3 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 1.0 μg/m3 (1) N/A 36.0
 
Feb. 20, 2021, 3 p.m. 0.9 ppb (1) -0.3 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 4.0 μg/m3 (4) N/A 36.0
 
Feb. 20, 2021, 2 p.m. 1.5 ppb (2) 0.0 ppb (0) 1.5 ppb (2) 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A 3.0 μg/m3 (3) N/A 35.0
 
Feb. 20, 2021, 1 p.m. 1.4 ppb (2) -0.2 ppb (0) 1.6 ppb (2) 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A 0.0 μg/m3 (0) N/A 35.0
 
Feb. 20, 2021, noon 1.0 ppb (1) -0.4 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A -2.0 μg/m3 (0) N/A 35.0
 
Feb. 20, 2021, 11 a.m. 1.4 ppb (2) -0.2 ppb (0) 1.5 ppb (2) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A -1.0 μg/m3 (0) N/A 36.0
 
Feb. 20, 2021, 10 a.m. 0.9 ppb (1) -0.2 ppb (0) 1.0 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
 
Feb. 20, 2021, 9 a.m. 0.8 ppb (1) 0.0 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 1.0 μg/m3 (1) N/A 38.0
 
Feb. 20, 2021, 8 a.m. 0.6 ppb (1) -0.2 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 1.0 μg/m3 (1) N/A 38.0
 
Feb. 20, 2021, 7 a.m. 0.9 ppb (1) -0.2 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 19.0 μg/m3 (18) N/A 38.0
 
Feb. 20, 2021, 6 a.m. 1.4 ppb (2) 0.0 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 3.0 μg/m3 (3) N/A 39.0
 
Feb. 20, 2021, 5 a.m. 1.8 ppb (2) 0.0 ppb (0) 1.8 ppb (2) 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A 6.0 μg/m3 (6) N/A 40.0
 
Feb. 20, 2021, 4 a.m. 1.6 ppb (2) -0.1 ppb (0) 1.8 ppb (2) 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A 5.0 μg/m3 (5) N/A 41.0
 
Feb. 20, 2021, 3 a.m. 1.7 ppb (2) -0.4 ppb (0) 2.1 ppb (2) 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A 0.0 μg/m3 (0) N/A 41.0
 
Feb. 20, 2021, 2 a.m. 1.7 ppb (2) -0.2 ppb (0) 1.9 ppb (2) 2.0 ppb (2) N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 20, 2021, 1 a.m. 1.2 ppb (2) -0.3 ppb (0) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A N/A N/A 45.0
 
Feb. 20, 2021, midnight 1.4 ppb (2) 0.1 ppb (1) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A 1.0 μg/m3 (1) N/A 45.0
 
Feb. 19, 2021, 11 p.m. 1.0 ppb (1) -0.3 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A 1.0 μg/m3 (1) N/A 44.0
 
Feb. 19, 2021, 10 p.m. 1.3 ppb (2) 0.0 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A -1.0 μg/m3 (0) N/A 44.0
 
Feb. 19, 2021, 9 p.m. 1.3 ppb (2) 0.0 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A 3.0 μg/m3 (3) N/A 44.0
 
Feb. 19, 2021, 8 p.m. 1.8 ppb (2) 0.2 ppb (1) 1.8 ppb (2) 2.0 ppb (2) N/A N/A 47.0 ppb (44) N/A 7.0 μg/m3 (7) N/A 44.0
 
Feb. 19, 2021, 7 p.m. 2.2 ppb (3) 0.1 ppb (1) 2.1 ppb (2) 2.0 ppb (2) N/A N/A 48.0 ppb (45) N/A 24.0 μg/m3 (23) N/A 45.0
 
Feb. 19, 2021, 6 p.m. 3.7 ppb (4) 0.7 ppb (1) 3.7 ppb (4) 3.0 ppb (3) N/A N/A 47.0 ppb (44) N/A 9.0 μg/m3 (9) N/A 44.0
 
Feb. 19, 2021, 5 p.m. 3.9 ppb (4) 1.2 ppb (2) 3.9 ppb (4) 3.0 ppb (3) N/A N/A 43.0 ppb (40) N/A 3.0 μg/m3 (3) N/A 40.0
 
Feb. 19, 2021, 4 p.m. 2.4 ppb (3) 0.7 ppb (1) 2.1 ppb (2) 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A 0.0 μg/m3 (0) N/A 35.0
 
Feb. 19, 2021, 3 p.m. 2.4 ppb (3) 0.5 ppb (1) 2.3 ppb (3) 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A 0.0 μg/m3 (0) N/A 35.0
 
Feb. 19, 2021, 2 p.m. 1.4 ppb (2) -0.1 ppb (0) 1.5 ppb (2) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A 2.0 μg/m3 (2) N/A 36.0
 
Feb. 19, 2021, 1 p.m. 1.0 ppb (1) -0.2 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 3.0 μg/m3 (3) N/A 36.0
 
Feb. 19, 2021, noon 1.0 ppb (1) -0.3 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 1.0 μg/m3 (1) N/A 36.0
 
Feb. 19, 2021, 11 a.m. 2.0 ppb (2) 0.1 ppb (1) 1.9 ppb (2) 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A 0.0 μg/m3 (0) N/A 35.0
 
Feb. 19, 2021, 10 a.m. 0.8 ppb (1) -0.4 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 4.0 μg/m3 (4) N/A 36.0
 
Feb. 19, 2021, 9 a.m. 0.9 ppb (1) -0.2 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 1.0 μg/m3 (1) N/A 36.0
 
Feb. 19, 2021, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A -3.0 μg/m3 (0) N/A 38.0
 
Feb. 19, 2021, 7 a.m. 0.9 ppb (1) -0.1 ppb (0) 1.0 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
 
Feb. 19, 2021, 6 a.m. 0.7 ppb (1) -0.2 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 3.0 μg/m3 (3) N/A 38.0
 
Feb. 19, 2021, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 0.0 μg/m3 (0) N/A 38.0
 
Feb. 19, 2021, 4 a.m. 0.9 ppb (1) 0.0 ppb (0) 1.1 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 0.0 μg/m3 (0) N/A 39.0
 
Feb. 19, 2021, 3 a.m. 0.5 ppb (1) -0.4 ppb (0) 0.9 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 0.0 μg/m3 (0) N/A 39.0
 
Feb. 19, 2021, 2 a.m. 1.0 ppb (1) -0.1 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A -2.0 μg/m3 (0) N/A 39.0
 
Feb. 19, 2021, 1 a.m. 0.6 ppb (1) -0.3 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A -4.0 μg/m3 (0) N/A 39.0
 
Feb. 19, 2021, midnight 0.7 ppb (1) -0.1 ppb (0) 0.7 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
 
Feb. 18, 2021, 11 p.m. 0.5 ppb (1) -0.2 ppb (0) 0.5 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 2.0 μg/m3 (2) N/A 40.0
 
Feb. 18, 2021, 10 p.m. 0.4 ppb (1) -0.2 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A -3.0 μg/m3 (0) N/A 41.0
 
Feb. 18, 2021, 9 p.m. 0.4 ppb (1) -0.4 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A -4.0 μg/m3 (0) N/A 40.0
 
Feb. 18, 2021, 8 p.m. 0.7 ppb (1) -0.1 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A -2.0 μg/m3 (0) N/A 40.0
 
Feb. 18, 2021, 7 p.m. 1.8 ppb (2) 0.1 ppb (1) 1.8 ppb (2) 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A 0.0 μg/m3 (0) N/A 41.0
 
Feb. 18, 2021, 6 p.m. 2.5 ppb (3) 0.5 ppb (1) 2.3 ppb (3) 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A 3.0 μg/m3 (3) N/A 41.0
 
Feb. 18, 2021, 5 p.m. 2.0 ppb (2) 0.4 ppb (1) 2.1 ppb (2) 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A 4.0 μg/m3 (4) N/A 37.0
 
Feb. 18, 2021, 4 p.m. 2.2 ppb (3) 0.6 ppb (1) 2.2 ppb (3) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A 1.0 μg/m3 (1) N/A 36.0
 
Feb. 18, 2021, 3 p.m. 1.9 ppb (2) 0.2 ppb (1) 1.8 ppb (2) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A -1.0 μg/m3 (0) N/A 36.0
 
Feb. 18, 2021, 2 p.m. 1.3 ppb (2) -0.1 ppb (0) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A 2.0 μg/m3 (2) N/A 37.0
 
Feb. 18, 2021, 1 p.m. 3.3 ppb (4) -0.1 ppb (0) 3.1 ppb (3) 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A 1.0 μg/m3 (1) N/A 35.0
 
Feb. 18, 2021, noon 1.5 ppb (2) -0.2 ppb (0) 1.4 ppb (2) 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A 1.0 μg/m3 (1) N/A 34.0
 
Feb. 18, 2021, 11 a.m. 0.6 ppb (1) -0.1 ppb (0) 0.7 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
 
Feb. 18, 2021, 10 a.m. 0.8 ppb (1) 0.0 ppb (0) 0.8 ppb (1) 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 1.0 μg/m3 (1) N/A 36.0
 
Feb. 18, 2021, 9 a.m. 0.6 ppb (1) -0.2 ppb (0) 0.7 ppb (1) 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A -2.0 μg/m3 (0) N/A 38.0