ID: 2076

AQSQID: 000091701

Site Name: Steeper

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

Updated: Jan. 17, 2021, 11:31 p.m.

Location: Alberta (Yellowhead Co), CC

Reporting: True, Located: True

Current AQI: 38.0

Alberta (Yellowhead Co) CC, CA: 53.1325, -117.09111

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 17, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 17, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 17, 2021, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 17, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 17, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 17, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.3 μg/m3 (2) 39.0
 
Jan. 17, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 17, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 17, 2021, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.4 μg/m3 (2) 38.0
 
Jan. 17, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 17, 2021, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.5 μg/m3 (3) 40.0
 
Jan. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.6 μg/m3 (3) 3.0
 
Jan. 17, 2021, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.6 μg/m3 (3) 40.0
 
Jan. 17, 2021, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.5 μg/m3 (3) 41.0
 
Jan. 17, 2021, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.7 μg/m3 (3) 40.0
 
Jan. 17, 2021, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.7 μg/m3 (3) 41.0
 
Jan. 17, 2021, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.7 μg/m3 (3) 41.0
 
Jan. 17, 2021, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.7 μg/m3 (3) 41.0
 
Jan. 17, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.8 μg/m3 (4) 41.0
 
Jan. 17, 2021, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.7 μg/m3 (3) 40.0
 
Jan. 17, 2021, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.7 μg/m3 (3) 41.0
 
Jan. 17, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.6 μg/m3 (3) 40.0
 
Jan. 16, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.6 μg/m3 (3) 41.0
 
Jan. 16, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.6 μg/m3 (3) 41.0
 
Jan. 16, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.6 μg/m3 (3) 42.0
 
Jan. 16, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.6 μg/m3 (3) 43.0
 
Jan. 16, 2021, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.5 μg/m3 (3) 42.0
 
Jan. 16, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.5 μg/m3 (3) 41.0
 
Jan. 16, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
Jan. 16, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
Jan. 16, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 16, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 16, 2021, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 16, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 16, 2021, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.4 μg/m3 (2) 2.0
 
Jan. 16, 2021, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 16, 2021, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 16, 2021, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.5 μg/m3 (3) 39.0
 
Jan. 16, 2021, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.6 μg/m3 (3) 38.0
 
Jan. 16, 2021, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 0.7 μg/m3 (3) 36.0
 
Jan. 16, 2021, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.6 μg/m3 (3) 39.0
 
Jan. 16, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.6 μg/m3 (3) 39.0
 
Jan. 16, 2021, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.6 μg/m3 (3) 39.0
 
Jan. 16, 2021, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.5 μg/m3 (3) 40.0
 
Jan. 16, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.5 μg/m3 (3) 40.0
 
Jan. 15, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.6 μg/m3 (3) 40.0
 
Jan. 15, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.6 μg/m3 (3) 40.0
 
Jan. 15, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.6 μg/m3 (3) 40.0
 
Jan. 15, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.6 μg/m3 (3) 41.0
 
Jan. 15, 2021, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.6 μg/m3 (3) 41.0
 
Jan. 15, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.6 μg/m3 (3) 41.0
 
Jan. 15, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.5 μg/m3 (3) 40.0
 
Jan. 15, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.3 μg/m3 (2) 39.0
 
Jan. 15, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
Jan. 15, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.5 μg/m3 (3) 39.0
 
Jan. 15, 2021, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.5 μg/m3 (3) 41.0
 
Jan. 15, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.6 μg/m3 (3) 41.0
 
Jan. 15, 2021, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.7 μg/m3 (3) 41.0
 
Jan. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.8 μg/m3 (4) 4.0
 
Jan. 15, 2021, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.7 μg/m3 (3) 42.0
 
Jan. 15, 2021, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.7 μg/m3 (3) 41.0
 
Jan. 15, 2021, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
Jan. 15, 2021, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.1 μg/m3 (1) 39.0
 
Jan. 15, 2021, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.1 μg/m3 (1) 40.0
 
Jan. 15, 2021, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.2 μg/m3 (1) 38.0
 
Jan. 15, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.2 μg/m3 (1) 40.0
 
Jan. 15, 2021, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.1 μg/m3 (1) 41.0
 
Jan. 15, 2021, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.2 μg/m3 (1) 42.0
 
Jan. 15, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.1 μg/m3 (1) 42.0
 
Jan. 14, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.2 μg/m3 (1) 41.0
 
Jan. 14, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.2 μg/m3 (1) 41.0
 
Jan. 14, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.2 μg/m3 (1) 41.0
 
Jan. 14, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.1 μg/m3 (1) 41.0
 
Jan. 14, 2021, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.1 μg/m3 (1) 1.0
 
Jan. 14, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.1 μg/m3 (1) 1.0
 
Jan. 14, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.2 μg/m3 (1) 40.0
 
Jan. 14, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.2 μg/m3 (1) 40.0
 
Jan. 14, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.1 μg/m3 (1) 40.0
 
Jan. 14, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.1 μg/m3 (1) 40.0
 
Jan. 14, 2021, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.1 μg/m3 (1) 40.0
 
Jan. 14, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.1 μg/m3 (1) 40.0
 
Jan. 14, 2021, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.1 μg/m3 (1) 40.0
 
Jan. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.1 μg/m3 (1) 1.0
 
Jan. 14, 2021, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.1 μg/m3 (1) 39.0
 
Jan. 14, 2021, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.1 μg/m3 (1) 39.0
 
Jan. 14, 2021, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.2 μg/m3 (1) 39.0
 
Jan. 14, 2021, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.5 μg/m3 (3) 39.0
 
Jan. 14, 2021, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.5 μg/m3 (3) 39.0
 
Jan. 14, 2021, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.5 μg/m3 (3) 40.0
 
Jan. 14, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
Jan. 14, 2021, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.5 μg/m3 (3) 40.0
 
Jan. 14, 2021, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.5 μg/m3 (3) 39.0
 
Jan. 14, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 13, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 13, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
Jan. 13, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
Jan. 13, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.6 μg/m3 (3) 41.0
 
Jan. 13, 2021, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.6 μg/m3 (3) 41.0
 
Jan. 13, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.3 μg/m3 (2) 40.0
 
Jan. 13, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.4 μg/m3 (2) 41.0
 
Jan. 13, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.3 μg/m3 (2) 40.0
 
Jan. 13, 2021, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 13, 2021, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 0.4 μg/m3 (2) 37.0
 
Jan. 13, 2021, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 1.2 μg/m3 (5) 34.0
 
Jan. 13, 2021, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 1.8 μg/m3 (8) 33.0
 
Jan. 13, 2021, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 1.6 μg/m3 (7) 34.0
 
Jan. 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.3 μg/m3 (6) 6.0
 
Jan. 13, 2021, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 2.4 μg/m3 (10) 35.0
 
Jan. 13, 2021, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 4.7 μg/m3 (20) 30.0
 
Jan. 13, 2021, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 3.7 μg/m3 (16) 29.0
 
Jan. 13, 2021, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 0.2 μg/m3 (1) 36.0
 
Jan. 13, 2021, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 0.2 μg/m3 (1) 37.0
 
Jan. 13, 2021, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 0.2 μg/m3 (1) 37.0
 
Jan. 13, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 0.2 μg/m3 (1) 37.0
 
Jan. 13, 2021, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 0.2 μg/m3 (1) 36.0
 
Jan. 13, 2021, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 0.2 μg/m3 (1) 36.0
 
Jan. 13, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 0.2 μg/m3 (1) 35.0
 
Jan. 12, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 0.3 μg/m3 (2) 34.0
 
Jan. 12, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 0.2 μg/m3 (1) 34.0
 
Jan. 12, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 0.2 μg/m3 (1) 34.0
 
Jan. 12, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 0.3 μg/m3 (2) 35.0
 
Jan. 12, 2021, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 0.3 μg/m3 (2) 36.0
 
Jan. 12, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 12, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 12, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 12, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
Jan. 12, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
Jan. 12, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 0.6 μg/m3 (3) 37.0
 
Jan. 12, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 12, 2021, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 12, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.4 μg/m3 (2) 2.0
 
Jan. 12, 2021, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.4 μg/m3 (2) 41.0
 
Jan. 12, 2021, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.5 μg/m3 (3) 41.0
 
Jan. 12, 2021, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
Jan. 12, 2021, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.5 μg/m3 (3) 40.0
 
Jan. 12, 2021, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.5 μg/m3 (3) 40.0
 
Jan. 12, 2021, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.5 μg/m3 (3) 39.0
 
Jan. 12, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.5 μg/m3 (3) 40.0
 
Jan. 12, 2021, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.5 μg/m3 (3) 40.0
 
Jan. 12, 2021, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.4 μg/m3 (2) 41.0
 
Jan. 12, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.4 μg/m3 (2) 41.0
 
Jan. 11, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
Jan. 11, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.6 μg/m3 (3) 41.0
 
Jan. 11, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.5 μg/m3 (3) 42.0
 
Jan. 11, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.7 μg/m3 (3) 39.0
 
Jan. 11, 2021, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 1.2 μg/m3 (5) 40.0
 
Jan. 11, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.8 μg/m3 (4) 40.0
 
Jan. 11, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.3 μg/m3 (2) 40.0
 
Jan. 11, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.3 μg/m3 (2) 39.0
 
Jan. 11, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 11, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.2 μg/m3 (1) 38.0
 
Jan. 11, 2021, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.2 μg/m3 (1) 38.0
 
Jan. 11, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 11, 2021, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.3 μg/m3 (2) 2.0
 
Jan. 11, 2021, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 11, 2021, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 11, 2021, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 11, 2021, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.2 μg/m3 (1) 39.0
 
Jan. 11, 2021, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.3 μg/m3 (2) 39.0
 
Jan. 11, 2021, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.3 μg/m3 (2) 39.0
 
Jan. 11, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.3 μg/m3 (2) 39.0
 
Jan. 11, 2021, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.2 μg/m3 (1) 39.0
 
Jan. 11, 2021, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 0.2 μg/m3 (1) 39.0
 
Jan. 11, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.3 μg/m3 (2) 40.0
 
Jan. 10, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.3 μg/m3 (2) 41.0
 
Jan. 10, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.4 μg/m3 (2) 42.0