AQSQID: 500070014

Site Name: Burlington

Location: Burlington (Main St), VT

Reporting: True, Located: True

Current AQI: 31.0

Burlington (Main St) VT, US: 44.476101, -73.210297

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 19, 2019, 7 p.m. 7.1 ppb (7) 2.8 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 7.5 μg/m3 (31) 31.0
 
July 19, 2019, 6 p.m. 6.1 ppb (6) 2.7 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
July 19, 2019, 5 p.m. 5.3 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 6.6 μg/m3 (28) 28.0
 
July 19, 2019, 4 p.m. 5.0 ppb (5) 2.5 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 6.2 μg/m3 (26) 26.0
 
July 19, 2019, 3 p.m. 5.2 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 6.1 μg/m3 (25) 25.0
 
July 19, 2019, 2 p.m. 6.9 ppb (6) 3.5 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 6.4 μg/m3 (27) 27.0
 
July 19, 2019, 1 p.m. 5.4 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
July 19, 2019, noon 6.0 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 7.5 μg/m3 (31) 31.0
 
July 19, 2019, 11 a.m. 5.9 ppb (5) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 7.5 μg/m3 (31) 31.0
 
July 19, 2019, 10 a.m. 4.3 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 7.5 μg/m3 (31) 31.0
 
July 19, 2019, 9 a.m. 3.5 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 7.4 μg/m3 (31) 31.0
 
July 19, 2019, 8 a.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.4 ppb (4) N/A 7.2 μg/m3 (30) 30.0
 
July 19, 2019, 7 a.m. 1.8 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.4 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
July 19, 2019, 6 a.m. 2.1 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.4 ppb (4) N/A 8.2 μg/m3 (34) 34.0
 
July 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.5 μg/m3 (31) 31.0
 
July 19, 2019, 4 a.m. 1.8 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.4 ppb (4) N/A 7.7 μg/m3 (32) 32.0
 
July 19, 2019, 3 a.m. 2.5 ppb (2) 1.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.4 ppb (4) N/A 7.8 μg/m3 (32) 32.0
 
July 19, 2019, 2 a.m. 3.5 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
July 19, 2019, 1 a.m. 6.5 ppb (6) 2.3 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 7.8 μg/m3 (32) 32.0
 
July 19, 2019, midnight 6.6 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 7.5 μg/m3 (31) 31.0
 
July 18, 2019, 11 p.m. 7.5 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 7.6 μg/m3 (32) 32.0
 
July 18, 2019, 10 p.m. 14.8 ppb (14) 4.4 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.5 ppb (6) N/A 7.7 μg/m3 (32) 32.0
 
July 18, 2019, 9 p.m. 9.5 ppb (9) 3.8 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) N/A 7.5 μg/m3 (31) 31.0
 
July 18, 2019, 8 p.m. 10.6 ppb (10) 3.5 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
July 18, 2019, 7 p.m. 7.5 ppb (7) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
July 18, 2019, 6 p.m. 9.7 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 6.2 μg/m3 (26) 26.0
 
July 18, 2019, 5 p.m. 12.7 ppb (12) 6.5 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 6.1 μg/m3 (25) 25.0
 
July 18, 2019, 4 p.m. 10.2 ppb (9) 4.5 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 5.8 μg/m3 (24) 24.0
 
July 18, 2019, 3 p.m. 6.9 ppb (6) 2.6 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 5.9 μg/m3 (25) 25.0
 
July 18, 2019, 2 p.m. 7.3 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 5.5 μg/m3 (23) 23.0
 
July 18, 2019, 1 p.m. 8.9 ppb (8) 4.4 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 5.6 μg/m3 (23) 23.0
 
July 18, 2019, noon 6.0 ppb (6) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
July 18, 2019, 11 a.m. 5.2 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
July 18, 2019, 10 a.m. 6.1 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 6.3 μg/m3 (26) 26.0
 
July 18, 2019, 9 a.m. 4.7 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 6.6 μg/m3 (28) 28.0
 
July 18, 2019, 8 a.m. 3.7 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 7.2 μg/m3 (30) 30.0
 
July 18, 2019, 7 a.m. 4.3 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
July 18, 2019, 6 a.m. 3.4 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 7.4 μg/m3 (31) 31.0
 
July 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.3 μg/m3 (30) 30.0
 
July 18, 2019, 4 a.m. 3.4 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 7.3 μg/m3 (30) 30.0
 
July 18, 2019, 3 a.m. 3.2 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, 2 a.m. 3.4 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, 1 a.m. 7.8 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, midnight 5.0 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 5.9 μg/m3 (25) 25.0
 
July 17, 2019, 11 p.m. 6.9 ppb (6) 2.8 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 5.7 μg/m3 (24) 24.0
 
July 17, 2019, 10 p.m. 8.7 ppb (8) 2.9 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) N/A 6.2 μg/m3 (26) 26.0
 
July 17, 2019, 9 p.m. 6.1 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 5.4 μg/m3 (23) 23.0
 
July 17, 2019, 8 p.m. 7.6 ppb (7) 3.6 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 5.3 μg/m3 (22) 22.0
 
July 17, 2019, 7 p.m. 6.3 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 4.9 μg/m3 (20) 20.0
 
July 17, 2019, 6 p.m. 5.6 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 5.6 μg/m3 (23) 23.0
 
July 17, 2019, 5 p.m. 11.4 ppb (11) 4.5 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 5.9 μg/m3 (25) 25.0
 
July 17, 2019, 4 p.m. 7.0 ppb (6) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 5.4 μg/m3 (23) 23.0
 
July 17, 2019, 3 p.m. 6.7 ppb (6) 3.5 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 5.2 μg/m3 (22) 22.0
 
July 17, 2019, 2 p.m. 9.7 ppb (9) 5.5 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 4.7 μg/m3 (20) 20.0
 
July 17, 2019, 1 p.m. 10.5 ppb (10) 5.0 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 4.5 μg/m3 (19) 19.0
 
July 17, 2019, noon 10.5 ppb (10) 5.1 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 4.6 μg/m3 (19) 19.0
 
July 17, 2019, 11 a.m. 6.6 ppb (6) 2.9 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
July 17, 2019, 10 a.m. 4.2 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 7.5 μg/m3 (31) 31.0
 
July 17, 2019, 9 a.m. 3.4 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 7.6 μg/m3 (32) 32.0
 
July 17, 2019, 8 a.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 8.2 μg/m3 (34) 34.0
 
July 17, 2019, 7 a.m. 2.6 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 8.9 μg/m3 (37) 37.0
 
July 17, 2019, 6 a.m. 3.2 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
July 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (38) 38.0
 
July 17, 2019, 4 a.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 9.2 μg/m3 (38) 38.0
 
July 17, 2019, 3 a.m. 5.9 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 9.2 μg/m3 (38) 38.0
 
July 17, 2019, 2 a.m. 6.3 ppb (6) 2.3 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 9.2 μg/m3 (38) 38.0
 
July 17, 2019, 1 a.m. 5.7 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
July 17, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.2 μg/m3 (38) 38.0
 
July 16, 2019, 11 p.m. 5.3 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 8.9 μg/m3 (37) 37.0
 
July 16, 2019, 10 p.m. 4.7 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 8.7 μg/m3 (36) 36.0
 
July 16, 2019, 9 p.m. 5.0 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 8.6 μg/m3 (36) 36.0
 
July 16, 2019, 8 p.m. 5.0 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 8.3 μg/m3 (35) 35.0
 
July 16, 2019, 7 p.m. 4.3 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 8.3 μg/m3 (35) 35.0
 
July 16, 2019, 6 p.m. 4.4 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 8.4 μg/m3 (35) 35.0
 
July 16, 2019, 5 p.m. 5.8 ppb (5) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 8.4 μg/m3 (35) 35.0
 
July 16, 2019, 4 p.m. 6.7 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
July 16, 2019, 3 p.m. 6.7 ppb (6) 3.2 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 7.8 μg/m3 (32) 32.0
 
July 16, 2019, 2 p.m. 8.1 ppb (8) 4.2 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 7.3 μg/m3 (30) 30.0
 
July 16, 2019, 1 p.m. 5.6 ppb (5) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
July 16, 2019, noon 5.9 ppb (5) 2.7 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 7.4 μg/m3 (31) 31.0
 
July 16, 2019, 11 a.m. 9.3 ppb (9) 4.4 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
July 16, 2019, 10 a.m. 5.5 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
July 16, 2019, 9 a.m. 4.5 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
July 16, 2019, 8 a.m. 2.5 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
July 16, 2019, 7 a.m. 2.8 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
July 16, 2019, 6 a.m. 4.4 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
July 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.5 μg/m3 (27) 27.0
 
July 16, 2019, 4 a.m. 4.8 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
July 16, 2019, 3 a.m. 7.5 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 7.2 μg/m3 (30) 30.0
 
July 16, 2019, 2 a.m. 11.9 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 6.9 μg/m3 (29) 29.0
 
July 16, 2019, 1 a.m. 14.0 ppb (13) 2.1 ppb (2) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 8.4 μg/m3 (35) 35.0
 
July 16, 2019, midnight 4.2 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
July 15, 2019, 11 p.m. 2.5 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 5.4 μg/m3 (23) 23.0
 
July 15, 2019, 10 p.m. 3.6 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 5.5 μg/m3 (23) 23.0
 
July 15, 2019, 9 p.m. 3.9 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 5.6 μg/m3 (23) 23.0
 
July 15, 2019, 8 p.m. 4.3 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 5.6 μg/m3 (23) 23.0
 
July 15, 2019, 7 p.m. 3.0 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 5.7 μg/m3 (24) 24.0
 
July 15, 2019, 6 p.m. 4.0 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
July 15, 2019, 5 p.m. 5.7 ppb (5) 2.7 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
July 15, 2019, 4 p.m. 6.2 ppb (6) 3.4 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
July 15, 2019, 3 p.m. 5.0 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A N/A 5.0
 
July 15, 2019, 2 p.m. 5.0 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
July 15, 2019, 1 p.m. 9.0 ppb (8) 4.4 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 6.7 μg/m3 (28) 28.0
 
July 15, 2019, noon 3.4 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
July 15, 2019, 11 a.m. 4.8 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 5.5 μg/m3 (23) 23.0
 
July 15, 2019, 10 a.m. 5.9 ppb (5) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 5.4 μg/m3 (23) 23.0
 
July 15, 2019, 9 a.m. 8.3 ppb (8) 3.2 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
July 15, 2019, 8 a.m. 2.5 ppb (2) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
July 15, 2019, 7 a.m. 1.6 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (3) N/A 5.1 μg/m3 (21) 21.0
 
July 15, 2019, 6 a.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (3) N/A 4.8 μg/m3 (20) 20.0
 
July 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
July 15, 2019, 4 a.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (3) N/A 4.8 μg/m3 (20) 20.0
 
July 15, 2019, 3 a.m. 2.2 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 4.9 μg/m3 (20) 20.0
 
July 15, 2019, 2 a.m. 2.6 ppb (2) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
July 15, 2019, 1 a.m. 2.9 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 4.3 μg/m3 (18) 18.0
 
July 15, 2019, midnight 3.4 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
July 14, 2019, 11 p.m. 3.7 ppb (3) 1.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 5.5 μg/m3 (23) 23.0
 
July 14, 2019, 10 p.m. 3.6 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
July 14, 2019, 9 p.m. 3.9 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 6.2 μg/m3 (26) 26.0
 
July 14, 2019, 8 p.m. 4.8 ppb (4) 2.6 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
July 14, 2019, 7 p.m. 3.1 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 5.5 μg/m3 (23) 23.0
 
July 14, 2019, 6 p.m. 3.5 ppb (3) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
July 14, 2019, 5 p.m. 3.6 ppb (3) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
July 14, 2019, 4 p.m. 3.4 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
July 14, 2019, 3 p.m. 3.7 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
July 14, 2019, 2 p.m. 3.5 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
July 14, 2019, 1 p.m. 4.4 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 8.4 μg/m3 (35) 35.0
 
July 14, 2019, noon 8.3 ppb (8) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
July 14, 2019, 11 a.m. 6.2 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 10.5 μg/m3 (44) 44.0
 
July 14, 2019, 10 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.5 ppb (6) N/A 11.9 μg/m3 (50) 50.0
 
July 14, 2019, 9 a.m. 2.1 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.4 ppb (4) N/A 11.3 μg/m3 (47) 47.0
 
July 14, 2019, 8 a.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.4 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 14, 2019, 7 a.m. 4.3 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 10.8 μg/m3 (45) 45.0
 
July 14, 2019, 6 a.m. 4.5 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 10.7 μg/m3 (45) 45.0
 
July 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.3 μg/m3 (43) 43.0
 
July 14, 2019, 4 a.m. 3.7 ppb (3) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 10.5 μg/m3 (44) 44.0
 
July 14, 2019, 3 a.m. 4.2 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 11.1 μg/m3 (46) 46.0
 
July 14, 2019, 2 a.m. 8.4 ppb (8) 1.4 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 14, 2019, 1 a.m. 6.5 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 10.1 μg/m3 (42) 42.0
 
July 14, 2019, midnight 4.1 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 11.4 μg/m3 (48) 48.0
 
July 13, 2019, 11 p.m. 7.6 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) N/A 10.2 μg/m3 (42) 42.0
 
July 13, 2019, 10 p.m. 5.7 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.5 ppb (6) N/A 7.9 μg/m3 (33) 33.0
 
July 13, 2019, 9 p.m. 3.6 ppb (3) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 7.8 μg/m3 (32) 32.0
 
July 13, 2019, 8 p.m. 3.6 ppb (3) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 8.5 μg/m3 (35) 35.0
 
July 13, 2019, 7 p.m. 5.2 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 8.3 μg/m3 (35) 35.0
 
July 13, 2019, 6 p.m. 4.2 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 9.3 μg/m3 (39) 39.0
 
July 13, 2019, 5 p.m. 4.4 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 9.6 μg/m3 (40) 40.0
 
July 13, 2019, 4 p.m. 4.4 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 9.7 μg/m3 (40) 40.0
 
July 13, 2019, 3 p.m. 5.9 ppb (5) 2.7 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 8.4 μg/m3 (35) 35.0
 
July 13, 2019, 2 p.m. 5.1 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 8.3 μg/m3 (35) 35.0
 
July 13, 2019, 1 p.m. 4.0 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 9.1 μg/m3 (38) 38.0
 
July 13, 2019, noon 3.4 ppb (3) 1.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 11.2 μg/m3 (47) 47.0
 
July 13, 2019, 11 a.m. 3.7 ppb (3) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 13, 2019, 10 a.m. 3.9 ppb (4) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) N/A 11.4 μg/m3 (48) 48.0
 
July 13, 2019, 9 a.m. 4.1 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 13, 2019, 8 a.m. 4.5 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 10.7 μg/m3 (45) 45.0
 
July 13, 2019, 7 a.m. 4.8 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.5 ppb (6) N/A 12.8 μg/m3 (52) 52.0
 
July 13, 2019, 6 a.m. 7.6 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) N/A 13.2 μg/m3 (53) 53.0
 
July 13, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.4 μg/m3 (51) 51.0
 
July 13, 2019, 4 a.m. 7.6 ppb (7) 2.3 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 11.2 μg/m3 (47) 47.0
 
July 13, 2019, 3 a.m. 6.3 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 11.2 μg/m3 (47) 47.0
 
July 13, 2019, 2 a.m. 6.1 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.5 ppb (6) N/A 12.3 μg/m3 (51) 51.0
 
July 13, 2019, 1 a.m. 5.2 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 12.5 μg/m3 (51) 51.0
 
July 13, 2019, midnight 3.7 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 10.6 μg/m3 (44) 44.0
 
July 12, 2019, 11 p.m. 4.6 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
July 12, 2019, 10 p.m. 4.0 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
July 12, 2019, 9 p.m. 5.6 ppb (5) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
July 12, 2019, 8 p.m. 6.4 ppb (6) 2.3 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.5 ppb (6) N/A 4.7 μg/m3 (20) 20.0