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
March 18, 2019, noon 0.1 ppb (0) 0.0 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
 
March 18, 2019, 11 a.m. 0.1 ppb (0) 0.0 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
 
March 18, 2019, 10 a.m. 0.0 ppb (0) 0.0 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
 
March 18, 2019, 9 a.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
March 18, 2019, 8 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 5.0 μg/m3 (21) 39.0
 
March 18, 2019, 7 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 5.0 μg/m3 (21) 39.0
 
March 18, 2019, 6 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 5.0 μg/m3 (21) 39.0
 
March 18, 2019, 5 a.m. 0.1 ppb (0) 0.0 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
 
March 18, 2019, 4 a.m. 0.1 ppb (0) 0.0 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
 
March 18, 2019, 3 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
March 18, 2019, 2 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
March 18, 2019, 1 a.m. 0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
March 18, 2019, midnight 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
March 17, 2019, 11 p.m. 0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 6.0 μg/m3 (25) 41.0
 
March 17, 2019, 10 p.m. 0.1 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
 
March 17, 2019, 9 p.m. 0.0 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
 
March 17, 2019, 8 p.m. 0.0 ppb (0) 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
 
March 17, 2019, 7 p.m. 0.3 ppb (0) 0.2 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
 
March 17, 2019, 6 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 5.0 μg/m3 (21) 41.0
 
March 17, 2019, 5 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 6.0 μg/m3 (25) 41.0
 
March 17, 2019, 4 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
March 17, 2019, 3 p.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
March 17, 2019, 2 p.m. -0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 2.0 μg/m3 (8) 40.0
 
March 17, 2019, 1 p.m. -0.2 ppb (0) 0.0 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
 
March 17, 2019, noon -0.1 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
 
March 17, 2019, 11 a.m. -0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 5.0 μg/m3 (21) 40.0
 
March 17, 2019, 10 a.m. -0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 5.0 μg/m3 (21) 40.0
 
March 17, 2019, 9 a.m. -0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
March 17, 2019, 8 a.m. -0.2 ppb (0) 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
 
March 17, 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
 
March 17, 2019, 6 a.m. -0.1 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
 
March 17, 2019, 5 a.m. 0.0 ppb (0) 0.0 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
 
March 17, 2019, 4 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 17, 2019, 3 a.m. 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
 
March 17, 2019, 2 a.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
March 17, 2019, 1 a.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 1.0 μg/m3 (4) 40.0
 
March 17, 2019, midnight 0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 1.0 μg/m3 (4) 40.0
 
March 16, 2019, 11 p.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 2.0 μg/m3 (8) 40.0
 
March 16, 2019, 10 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 1.0 μg/m3 (4) 42.0
 
March 16, 2019, 9 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 2.0 μg/m3 (8) 42.0
 
March 16, 2019, 8 p.m. 0.1 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
 
March 16, 2019, 7 p.m. 0.0 ppb (0) 0.1 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
 
March 16, 2019, 6 p.m. 0.0 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
 
March 16, 2019, 5 p.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 16, 2019, 4 p.m. 0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
March 16, 2019, 3 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
March 16, 2019, 2 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 16, 2019, 1 p.m. -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
March 16, 2019, noon 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 16, 2019, 11 a.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 16, 2019, 10 a.m. -0.1 ppb (0) 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 (0) 38.0
 
March 16, 2019, 9 a.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
March 16, 2019, 8 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
March 16, 2019, 7 a.m. 0.0 ppb (0) 0.0 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
 
March 16, 2019, 6 a.m. -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A -2.0 μg/m3 (0) 39.0
 
March 16, 2019, 5 a.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A -2.0 μg/m3 (0) 40.0
 
March 16, 2019, 4 a.m. -0.1 ppb (0) 0.0 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
 
March 16, 2019, 3 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
March 16, 2019, 2 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
March 16, 2019, 1 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 5.0 μg/m3 (21) 43.0
 
March 16, 2019, midnight 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 0.0 μg/m3 (0) 44.0
 
March 15, 2019, 11 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 56.0 ppb (43) N/A N/A -1.0 μg/m3 (0) 43.0
 
March 15, 2019, 10 p.m. 0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A -1.0 μg/m3 (0) 42.0
 
March 15, 2019, 9 p.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 1.0 μg/m3 (4) 42.0
 
March 15, 2019, 8 p.m. 0.2 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A -1.0 μg/m3 (0) 41.0
 
March 15, 2019, 7 p.m. 0.2 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 0.0 μg/m3 (0) 42.0
 
March 15, 2019, 6 p.m. 0.5 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 5.0 μg/m3 (21) 42.0
 
March 15, 2019, 5 p.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A N/A 6.0 μg/m3 (25) 42.0
 
March 15, 2019, 4 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 56.0 ppb (43) N/A N/A 6.0 μg/m3 (25) 43.0
 
March 15, 2019, 3 p.m. 0.0 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
March 15, 2019, 2 p.m. 0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 1.0 μg/m3 (4) 42.0
 
March 15, 2019, 1 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 1.0 μg/m3 (4) 41.0
 
March 15, 2019, noon 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 0.0 μg/m3 (0) 40.0
 
March 15, 2019, 11 a.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 0.0 μg/m3 (0) 40.0
 
March 15, 2019, 10 a.m. 0.0 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
 
March 15, 2019, 9 a.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 6.0 μg/m3 (25) 39.0
 
March 15, 2019, 8 a.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 4.0 μg/m3 (17) 40.0
 
March 15, 2019, 7 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 0.0 μg/m3 (0) 40.0
 
March 15, 2019, 6 a.m. 0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 2.0 μg/m3 (8) 40.0
 
March 15, 2019, 5 a.m. 0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 6.0 μg/m3 (25) 41.0
 
March 15, 2019, 4 a.m. 0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
March 15, 2019, 3 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A N/A 2.0 μg/m3 (8) 42.0
 
March 15, 2019, 2 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 6.0 μg/m3 (25) 43.0
 
March 15, 2019, 1 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 56.0 ppb (43) N/A N/A 6.0 μg/m3 (25) 43.0
 
March 15, 2019, midnight 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 58.0 ppb (45) N/A N/A 3.0 μg/m3 (12) 45.0
 
March 14, 2019, 11 p.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 57.0 ppb (44) N/A N/A 4.0 μg/m3 (17) 44.0
 
March 14, 2019, 10 p.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 56.0 ppb (43) N/A N/A 4.0 μg/m3 (17) 43.0
 
March 14, 2019, 9 p.m. 0.1 ppb (0) 0.2 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
 
March 14, 2019, 8 p.m. 0.0 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
 
March 14, 2019, 7 p.m. -0.1 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
 
March 14, 2019, 6 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
March 14, 2019, 5 p.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
March 14, 2019, 4 p.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 14, 2019, 3 p.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
March 14, 2019, 2 p.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 14, 2019, 1 p.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
March 14, 2019, noon -0.2 ppb (0) 0.1 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
 
March 14, 2019, 11 a.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
March 14, 2019, 10 a.m. -0.1 ppb (0) 0.0 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
 
March 14, 2019, 9 a.m. -0.2 ppb (0) 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
 
March 14, 2019, 8 a.m. -0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
March 14, 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
 
March 14, 2019, 6 a.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
March 14, 2019, 5 a.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A -2.0 μg/m3 (0) 38.0
 
March 14, 2019, 4 a.m. -0.1 ppb (0) 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 (0) 38.0
 
March 14, 2019, 3 a.m. 0.0 ppb (0) 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
 
March 14, 2019, 2 a.m. -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
March 14, 2019, 1 a.m. -0.2 ppb (0) 0.0 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
 
March 14, 2019, midnight -0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 13, 2019, 11 p.m. -0.1 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
 
March 13, 2019, 10 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 2.0 μg/m3 (8) 40.0
 
March 13, 2019, 9 p.m. 0.0 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 1.0 μg/m3 (4) 40.0
 
March 13, 2019, 8 p.m. 0.3 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 1.0 μg/m3 (4) 42.0
 
March 13, 2019, 7 p.m. 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 2.0 μg/m3 (8) 40.0
 
March 13, 2019, 6 p.m. 0.7 ppb (1) 0.3 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
 
March 13, 2019, 5 p.m. 0.4 ppb (0) 0.2 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
 
March 13, 2019, 4 p.m. 0.2 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
 
March 13, 2019, 3 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
March 13, 2019, 2 p.m. 0.0 ppb (0) 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
 
March 13, 2019, 1 p.m. 0.1 ppb (0) 0.0 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
 
March 13, 2019, noon 0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 4.0 μg/m3 (17) 40.0
 
March 13, 2019, 11 a.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 1.0 μg/m3 (4) 41.0
 
March 13, 2019, 10 a.m. 0.0 ppb (0) 0.0 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
 
March 13, 2019, 9 a.m. 0.0 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
 
March 13, 2019, 8 a.m. -0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 5.0 μg/m3 (21) 42.0
 
March 13, 2019, 7 a.m. -0.2 ppb (0) 0.0 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
 
March 13, 2019, 6 a.m. -0.2 ppb (0) 0.0 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
 
March 13, 2019, 5 a.m. -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
March 13, 2019, 4 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 56.0 ppb (43) N/A N/A 4.0 μg/m3 (17) 43.0
 
March 13, 2019, 3 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
March 13, 2019, 2 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 56.0 ppb (43) N/A N/A 3.0 μg/m3 (12) 43.0
 
March 13, 2019, 1 a.m. 0.0 ppb (0) 0.0 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
 
March 13, 2019, midnight 0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 58.0 ppb (45) N/A N/A 3.0 μg/m3 (12) 45.0
 
March 12, 2019, 11 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 57.0 ppb (44) N/A N/A 2.0 μg/m3 (8) 44.0
 
March 12, 2019, 10 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 57.0 ppb (44) N/A N/A 0.0 μg/m3 (0) 44.0
 
March 12, 2019, 9 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 56.0 ppb (43) N/A N/A 0.0 μg/m3 (0) 43.0
 
March 12, 2019, 8 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 56.0 ppb (43) N/A N/A 2.0 μg/m3 (8) 43.0
 
March 12, 2019, 7 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 56.0 ppb (43) N/A N/A 2.0 μg/m3 (8) 43.0
 
March 12, 2019, 6 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A -1.0 μg/m3 (0) 42.0
 
March 12, 2019, 5 p.m. 0.1 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 56.0 ppb (43) N/A N/A 1.0 μg/m3 (4) 43.0
 
March 12, 2019, 4 p.m. -0.1 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
March 12, 2019, 3 p.m. 0.9 ppb (1) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
March 12, 2019, 2 p.m. 0.1 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 2.0 μg/m3 (8) 42.0
 
March 12, 2019, 1 p.m. -0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 2.0 μg/m3 (8) 42.0
 
March 12, 2019, noon -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 0.0 μg/m3 (0) 42.0
 
March 12, 2019, 11 a.m. -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 1.0 μg/m3 (4) 42.0
 
March 12, 2019, 10 a.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 2.0 μg/m3 (8) 42.0
 
March 12, 2019, 9 a.m. -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
March 12, 2019, 8 a.m. -0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 5.0 μg/m3 (21) 42.0
 
March 12, 2019, 7 a.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
March 12, 2019, 6 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
March 12, 2019, 5 a.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 5.0 μg/m3 (21) 40.0
 
March 12, 2019, 4 a.m. -0.1 ppb (0) 0.1 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
 
March 12, 2019, 3 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 2.0 μg/m3 (8) 40.0
 
March 12, 2019, 2 a.m. 0.0 ppb (0) 0.0 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
 
March 12, 2019, 1 a.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 56.0 ppb (43) N/A N/A 0.0 μg/m3 (0) 43.0
 
March 12, 2019, midnight 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A -1.0 μg/m3 (0) 42.0
 
March 11, 2019, 11 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
March 11, 2019, 10 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
March 11, 2019, 9 p.m. -0.1 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 (0) 39.0
 
March 11, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 11, 2019, 7 p.m. 0.0 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 5.0 μg/m3 (21) 39.0
 
March 11, 2019, 6 p.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
March 11, 2019, 5 p.m. -0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
March 11, 2019, 4 p.m. -0.1 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
 
March 11, 2019, 3 p.m. -0.1 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
 
March 11, 2019, 2 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 11, 2019, 1 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 1.0 μg/m3 (4) 40.0