AQSQID: 560130099

Site Name: South Pass

Location: Fremont Co, WY

Reporting: True, Located: True

Current AQI: 38.0

Fremont Co WY, US: 42.5275, -108.7203

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 26, 2019, noon 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
May 26, 2019, 11 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 3.0 μg/m3 (12) 40.0
 
May 26, 2019, 10 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 3.0 μg/m3 (12) 41.0
 
May 26, 2019, 9 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 2.0 μg/m3 (8) 41.0
 
May 26, 2019, 8 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 2.0 μg/m3 (8) 39.0
 
May 26, 2019, 7 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
May 26, 2019, 6 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
May 26, 2019, 5 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 5.0 μg/m3 (21) 39.0
 
May 26, 2019, 4 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
May 26, 2019, 3 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
May 26, 2019, 2 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 2.0 μg/m3 (8) 41.0
 
May 26, 2019, 1 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 1.0 μg/m3 (4) 39.0
 
May 26, 2019, midnight 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
May 25, 2019, 11 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
May 25, 2019, 10 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
May 25, 2019, 9 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
May 25, 2019, 8 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 2.0 μg/m3 (8) 39.0
 
May 25, 2019, 7 p.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 2.0 μg/m3 (8) 39.0
 
May 25, 2019, 6 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
May 25, 2019, 5 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
May 25, 2019, 4 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
May 25, 2019, 3 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
May 25, 2019, 2 p.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
May 25, 2019, 1 p.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 3.0 μg/m3 (12) 30.0
 
May 25, 2019, noon 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
May 25, 2019, 11 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
May 25, 2019, 10 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
May 25, 2019, 9 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
May 25, 2019, 8 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A -1.0 μg/m3 (0) 35.0
 
May 25, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
May 25, 2019, 6 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 4.0 μg/m3 (17) 37.0
 
May 25, 2019, 5 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
May 25, 2019, 4 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
May 25, 2019, 3 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
May 25, 2019, 2 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
May 25, 2019, 1 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
May 25, 2019, midnight 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 1.0 μg/m3 (4) 39.0
 
May 24, 2019, 11 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 0.0 μg/m3 (0) 41.0
 
May 24, 2019, 10 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 2.0 μg/m3 (8) 42.0
 
May 24, 2019, 9 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 3.0 μg/m3 (12) 39.0
 
May 24, 2019, 8 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 2.0 μg/m3 (8) 39.0
 
May 24, 2019, 7 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
May 24, 2019, 6 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 5.0 μg/m3 (21) 39.0
 
May 24, 2019, 5 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
May 24, 2019, 4 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 3.0 μg/m3 (12) 41.0
 
May 24, 2019, 3 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 2.0 μg/m3 (8) 41.0
 
May 24, 2019, 2 p.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 5.0 μg/m3 (21) 41.0
 
May 24, 2019, 1 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A 7.0 μg/m3 (29) 40.0
 
May 24, 2019, noon 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 2.0 μg/m3 (8) 39.0
 
May 24, 2019, 11 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 57.0 ppb (44) N/A N/A 3.0 μg/m3 (12) 44.0
 
May 24, 2019, 10 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 5.0 μg/m3 (21) 41.0
 
May 24, 2019, 9 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 2.0 μg/m3 (8) 36.0
 
May 24, 2019, 8 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 0.0 μg/m3 (0) 33.0
 
May 24, 2019, 7 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 0.0 μg/m3 (0) 34.0
 
May 24, 2019, 6 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 N/A 1.0 μg/m3 (4) 34.0
 
May 24, 2019, 5 a.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
May 24, 2019, 4 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 0.0 μg/m3 (0) 37.0
 
May 24, 2019, 3 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
May 24, 2019, 2 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A -1.0 μg/m3 (0) 38.0
 
May 24, 2019, 1 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 0.0 μg/m3 (0) 37.0
 
May 24, 2019, midnight 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 1.0 μg/m3 (4) 37.0
 
May 23, 2019, 11 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
May 23, 2019, 10 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
May 23, 2019, 9 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
May 23, 2019, 8 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
May 23, 2019, 7 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
May 23, 2019, 6 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 3.0 μg/m3 (12) 36.0
 
May 23, 2019, 5 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 2.0 μg/m3 (8) 36.0
 
May 23, 2019, 4 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 2.0 μg/m3 (8) 36.0
 
May 23, 2019, 3 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
May 23, 2019, 2 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 0.0 μg/m3 (0) 35.0
 
May 23, 2019, 1 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 0.0 μg/m3 (0) 35.0
 
May 23, 2019, noon 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
May 23, 2019, 11 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
May 23, 2019, 10 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
May 23, 2019, 9 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
May 23, 2019, 8 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
May 23, 2019, 7 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 0.0 μg/m3 (0) 35.0
 
May 23, 2019, 6 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 0.0 μg/m3 (0) 33.0
 
May 23, 2019, 5 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
May 23, 2019, 4 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 0.0 μg/m3 (0) 34.0
 
May 23, 2019, 3 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 0.0 μg/m3 (0) 33.0
 
May 23, 2019, 2 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
May 23, 2019, 1 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
May 23, 2019, midnight 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 5.0 μg/m3 (21) 36.0
 
May 22, 2019, 11 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 1.0 μg/m3 (4) 37.0
 
May 22, 2019, 10 p.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 N/A -1.0 μg/m3 (0) 35.0
 
May 22, 2019, 9 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
May 22, 2019, 8 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
May 22, 2019, 7 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 0.0 μg/m3 (0) 35.0
 
May 22, 2019, 6 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 0.0 μg/m3 (0) 34.0
 
May 22, 2019, 5 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 1.0 μg/m3 (4) 33.0
 
May 22, 2019, 4 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
May 22, 2019, 3 p.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
May 22, 2019, 2 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
May 22, 2019, 1 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 1.0 μg/m3 (4) 30.0
 
May 22, 2019, noon 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A N/A -1.0 μg/m3 (0) 31.0
 
May 22, 2019, 11 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 1.0 μg/m3 (4) 30.0
 
May 22, 2019, 10 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
May 22, 2019, 9 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
May 22, 2019, 8 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
May 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
May 22, 2019, 6 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
May 22, 2019, 5 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
May 22, 2019, 4 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
May 22, 2019, 3 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
May 22, 2019, 2 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
May 22, 2019, 1 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
May 22, 2019, midnight 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
May 21, 2019, 11 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
May 21, 2019, 10 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (23) N/A N/A -1.0 μg/m3 (0) 23.0
 
May 21, 2019, 9 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (25) N/A N/A -1.0 μg/m3 (0) 25.0
 
May 21, 2019, 8 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
May 21, 2019, 7 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 27.0 ppb (21) N/A N/A 1.0 μg/m3 (4) 21.0
 
May 21, 2019, 6 p.m. 0.5 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 24.0 ppb (18) N/A N/A 0.0 μg/m3 (0) 18.0
 
May 21, 2019, 5 p.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 23.0 ppb (18) N/A N/A 0.0 μg/m3 (0) 18.0
 
May 21, 2019, 4 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 22.0 ppb (17) N/A N/A 1.0 μg/m3 (4) 17.0
 
May 21, 2019, 3 p.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 20.0 ppb (15) N/A N/A 2.0 μg/m3 (8) 15.0
 
May 21, 2019, 2 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 19.0 ppb (15) N/A N/A -1.0 μg/m3 (0) 15.0
 
May 21, 2019, 1 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (15) N/A N/A 0.0 μg/m3 (0) 15.0
 
May 21, 2019, noon 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 23.0 ppb (18) N/A N/A 1.0 μg/m3 (4) 18.0
 
May 21, 2019, 11 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 23.0 ppb (18) N/A N/A 1.0 μg/m3 (4) 18.0
 
May 21, 2019, 10 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 23.0 ppb (18) N/A N/A 1.0 μg/m3 (4) 18.0
 
May 21, 2019, 9 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 26.0 ppb (20) N/A N/A 0.0 μg/m3 (0) 20.0
 
May 21, 2019, 8 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A N/A -1.0 μg/m3 (0) 23.0
 
May 21, 2019, 7 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
May 21, 2019, 6 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 26.0 ppb (20) N/A N/A 2.0 μg/m3 (8) 20.0
 
May 21, 2019, 5 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
May 21, 2019, 4 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
May 21, 2019, 3 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
May 21, 2019, 2 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 3.0 μg/m3 (12) 30.0
 
May 21, 2019, 1 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (26) N/A N/A 3.0 μg/m3 (12) 26.0
 
May 21, 2019, midnight 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (29) N/A N/A 3.0 μg/m3 (12) 29.0
 
May 20, 2019, 11 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
May 20, 2019, 10 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
May 20, 2019, 9 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
May 20, 2019, 8 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (26) N/A N/A 2.0 μg/m3 (8) 26.0
 
May 20, 2019, 7 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
May 20, 2019, 6 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
May 20, 2019, 5 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (23) N/A N/A 2.0 μg/m3 (8) 23.0
 
May 20, 2019, 4 p.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
May 20, 2019, 3 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
May 20, 2019, 2 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
May 20, 2019, 1 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A N/A 3.0 μg/m3 (12) 22.0
 
May 20, 2019, noon 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
May 20, 2019, 11 a.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A N/A 1.0 μg/m3 (4) 22.0
 
May 20, 2019, 10 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A N/A 3.0 μg/m3 (12) 22.0
 
May 20, 2019, 9 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 27.0 ppb (21) N/A N/A 4.0 μg/m3 (17) 21.0
 
May 20, 2019, 8 a.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 27.0 ppb (21) N/A N/A 1.0 μg/m3 (4) 21.0
 
May 20, 2019, 7 a.m. 1.1 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
May 20, 2019, 6 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
May 20, 2019, 5 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (23) N/A N/A 1.0 μg/m3 (4) 23.0
 
May 20, 2019, 4 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
May 20, 2019, 3 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (25) N/A N/A 2.0 μg/m3 (8) 25.0
 
May 20, 2019, 2 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (25) N/A N/A 2.0 μg/m3 (8) 25.0
 
May 20, 2019, 1 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 29.0 ppb (22) N/A N/A 1.0 μg/m3 (4) 22.0
 
May 20, 2019, midnight 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
May 19, 2019, 11 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
May 19, 2019, 10 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 26.0 ppb (20) N/A N/A 3.0 μg/m3 (12) 20.0
 
May 19, 2019, 9 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 26.0 ppb (20) N/A N/A 3.0 μg/m3 (12) 20.0
 
May 19, 2019, 8 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 26.0 ppb (20) N/A N/A 2.0 μg/m3 (8) 20.0
 
May 19, 2019, 7 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 27.0 ppb (21) N/A N/A 4.0 μg/m3 (17) 21.0
 
May 19, 2019, 6 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 27.0 ppb (21) N/A N/A 6.0 μg/m3 (25) 25.0
 
May 19, 2019, 5 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 27.0 ppb (21) N/A N/A 2.0 μg/m3 (8) 21.0
 
May 19, 2019, 4 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (23) N/A N/A 0.0 μg/m3 (0) 23.0
 
May 19, 2019, 3 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (25) N/A N/A -1.0 μg/m3 (0) 25.0
 
May 19, 2019, 2 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (24) N/A N/A 1.0 μg/m3 (4) 24.0
 
May 19, 2019, 1 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (24) N/A N/A 0.0 μg/m3 (0) 24.0