AQSQID: 500070014

Site Name: Burlington

Location: Burlington (Main St), VT

Reporting: True, Located: True

Current AQI: 15.0

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
Jan. 21, 2019, 7 a.m. 7.1 ppb (7) 2.2 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
Jan. 21, 2019, 6 a.m. 6.5 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
Jan. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
Jan. 21, 2019, 4 a.m. 6.9 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2019, 3 a.m. 8.8 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 21, 2019, 2 a.m. 9.8 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 21, 2019, 1 a.m. 11.4 ppb (11) 2.1 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 5.4 μg/m3 (23) 23.0
 
Jan. 21, 2019, midnight 8.9 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 20, 2019, 11 p.m. 9.7 ppb (9) 2.1 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 20, 2019, 10 p.m. 9.5 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 4.9 μg/m3 (20) 20.0
 
Jan. 20, 2019, 9 p.m. 10.5 ppb (10) 2.5 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 4.9 μg/m3 (20) 20.0
 
Jan. 20, 2019, 8 p.m. 7.3 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 20, 2019, 7 p.m. 9.4 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 7.3 μg/m3 (30) 30.0
 
Jan. 20, 2019, 6 p.m. 8.2 ppb (8) 2.6 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 8.8 μg/m3 (37) 37.0
 
Jan. 20, 2019, 5 p.m. 10.0 ppb (9) 3.1 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 4.4 μg/m3 (18) 18.0
 
Jan. 20, 2019, 4 p.m. 7.1 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 4.2 μg/m3 (18) 18.0
 
Jan. 20, 2019, 3 p.m. 11.4 ppb (11) 3.6 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 20, 2019, 2 p.m. 12.8 ppb (12) 3.7 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
Jan. 20, 2019, 1 p.m. 13.7 ppb (13) 3.6 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 20, 2019, noon 12.5 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
Jan. 20, 2019, 11 a.m. 10.5 ppb (10) 2.5 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
Jan. 20, 2019, 10 a.m. 10.9 ppb (10) 2.8 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 20, 2019, 9 a.m. 11.1 ppb (10) 2.8 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 7.2 μg/m3 (30) 30.0
 
Jan. 20, 2019, 8 a.m. 11.0 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, 7 a.m. 10.0 ppb (9) 2.5 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 20, 2019, 6 a.m. 10.3 ppb (10) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Jan. 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.1 μg/m3 (30) 30.0
 
Jan. 20, 2019, 4 a.m. 9.7 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A 7.4 μg/m3 (31) 31.0
 
Jan. 20, 2019, 3 a.m. 7.7 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 7.3 μg/m3 (30) 30.0
 
Jan. 20, 2019, 2 a.m. 8.2 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 7.2 μg/m3 (30) 30.0
 
Jan. 20, 2019, 1 a.m. 8.9 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 7.3 μg/m3 (30) 30.0
 
Jan. 20, 2019, midnight 8.4 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2019, 11 p.m. 8.3 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 19, 2019, 10 p.m. 9.2 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 6.3 μg/m3 (26) 26.0
 
Jan. 19, 2019, 9 p.m. 9.5 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
Jan. 19, 2019, 8 p.m. 8.6 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 5.7 μg/m3 (24) 24.0
 
Jan. 19, 2019, 7 p.m. 7.2 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 5.5 μg/m3 (23) 23.0
 
Jan. 19, 2019, 6 p.m. 6.7 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 5.8 μg/m3 (24) 24.0
 
Jan. 19, 2019, 5 p.m. 6.6 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 5.8 μg/m3 (24) 24.0
 
Jan. 19, 2019, 4 p.m. 6.9 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 5.4 μg/m3 (23) 23.0
 
Jan. 19, 2019, 3 p.m. 9.0 ppb (8) 3.5 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
Jan. 19, 2019, 2 p.m. 6.9 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 3.7 μg/m3 (15) 15.0
 
Jan. 19, 2019, 1 p.m. 6.3 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 3.4 μg/m3 (14) 14.0
 
Jan. 19, 2019, noon 6.8 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 3.2 μg/m3 (13) 13.0
 
Jan. 19, 2019, 11 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 3.3 μg/m3 (14) 14.0
 
Jan. 19, 2019, 10 a.m. 6.2 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 3.3 μg/m3 (14) 14.0
 
Jan. 19, 2019, 9 a.m. 5.2 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 3.9 μg/m3 (16) 16.0
 
Jan. 19, 2019, 8 a.m. 5.7 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 19, 2019, 7 a.m. 4.4 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 19, 2019, 6 a.m. 5.6 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
Jan. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.6 μg/m3 (48) 48.0
 
Jan. 19, 2019, 4 a.m. 5.9 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 6.9 μg/m3 (29) 29.0
 
Jan. 19, 2019, 3 a.m. 6.8 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
Jan. 19, 2019, 2 a.m. 6.7 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
Jan. 19, 2019, 1 a.m. 7.1 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 9.4 μg/m3 (39) 39.0
 
Jan. 19, 2019, midnight 10.9 ppb (10) 1.6 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) N/A 11.8 μg/m3 (49) 49.0
 
Jan. 18, 2019, 11 p.m. 14.6 ppb (14) 3.1 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 11.7 μg/m3 (49) 49.0
 
Jan. 18, 2019, 10 p.m. 21.4 ppb (20) 5.9 ppb (5) N/A 16.0 ppb (15) N/A N/A N/A 0.4 ppb (4) N/A 12.1 μg/m3 (50) 50.0
 
Jan. 18, 2019, 9 p.m. 15.2 ppb (14) 3.8 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 10.6 μg/m3 (44) 44.0
 
Jan. 18, 2019, 8 p.m. 12.4 ppb (11) 2.8 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2019, 7 p.m. 12.4 ppb (11) 3.4 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 18, 2019, 6 p.m. 10.3 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 8.1 μg/m3 (34) 34.0
 
Jan. 18, 2019, 5 p.m. 11.3 ppb (10) 3.6 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 6.9 μg/m3 (29) 29.0
 
Jan. 18, 2019, 4 p.m. 9.9 ppb (9) 2.8 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 3 p.m. 9.1 ppb (8) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
Jan. 18, 2019, 2 p.m. 10.4 ppb (10) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
Jan. 18, 2019, 1 p.m. 11.0 ppb (10) 2.4 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 6.3 μg/m3 (26) 26.0
 
Jan. 18, 2019, noon 11.0 ppb (10) 2.3 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
Jan. 18, 2019, 11 a.m. 10.1 ppb (9) 1.5 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 10 a.m. 11.0 ppb (10) 1.2 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
Jan. 18, 2019, 9 a.m. 6.9 ppb (6) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 8 a.m. 4.0 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
Jan. 18, 2019, 7 a.m. 3.8 ppb (4) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 6.3 μg/m3 (26) 26.0
 
Jan. 18, 2019, 6 a.m. 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
Jan. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (35) 35.0
 
Jan. 18, 2019, 4 a.m. 4.9 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2019, 3 a.m. 6.4 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 9.4 μg/m3 (39) 39.0
 
Jan. 18, 2019, 2 a.m. 11.9 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 14.4 μg/m3 (55) 55.0
 
Jan. 18, 2019, 1 a.m. 18.7 ppb (17) 2.3 ppb (2) N/A 16.0 ppb (15) N/A N/A N/A 0.4 ppb (4) N/A 16.5 μg/m3 (60) 60.0
 
Jan. 18, 2019, midnight 21.8 ppb (20) 2.9 ppb (3) N/A 19.0 ppb (18) N/A N/A N/A 0.4 ppb (4) N/A 17.7 μg/m3 (62) 62.0
 
Jan. 17, 2019, 11 p.m. 17.2 ppb (16) 4.4 ppb (4) N/A 13.0 ppb (12) N/A N/A N/A 0.4 ppb (4) N/A 16.1 μg/m3 (59) 59.0
 
Jan. 17, 2019, 10 p.m. 16.1 ppb (15) 4.4 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 15.5 μg/m3 (57) 57.0
 
Jan. 17, 2019, 9 p.m. 12.5 ppb (12) 3.4 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 13.2 μg/m3 (53) 53.0
 
Jan. 17, 2019, 8 p.m. 10.3 ppb (10) 3.5 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 12.8 μg/m3 (52) 52.0
 
Jan. 17, 2019, 7 p.m. 8.4 ppb (8) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 9.2 μg/m3 (38) 38.0
 
Jan. 17, 2019, 6 p.m. 8.2 ppb (8) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 17, 2019, 5 p.m. 6.7 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 9.1 μg/m3 (38) 38.0
 
Jan. 17, 2019, 4 p.m. 7.8 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
Jan. 17, 2019, 3 p.m. 10.9 ppb (10) 3.6 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 9.7 μg/m3 (40) 40.0
 
Jan. 17, 2019, 2 p.m. 12.9 ppb (12) 4.7 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 17, 2019, 1 p.m. 15.7 ppb (15) 3.7 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) N/A 12.4 μg/m3 (51) 51.0
 
Jan. 17, 2019, noon 16.9 ppb (16) 3.3 ppb (3) N/A 14.0 ppb (13) N/A N/A N/A 0.3 ppb (3) N/A 8.2 μg/m3 (34) 34.0
 
Jan. 17, 2019, 11 a.m. 8.9 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
Jan. 17, 2019, 10 a.m. 6.4 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
Jan. 17, 2019, 9 a.m. 6.2 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 4.1 μg/m3 (17) 17.0
 
Jan. 17, 2019, 8 a.m. 6.4 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 17, 2019, 7 a.m. 5.1 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 3.7 μg/m3 (15) 15.0
 
Jan. 17, 2019, 6 a.m. 5.7 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 3.9 μg/m3 (16) 16.0
 
Jan. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
Jan. 17, 2019, 4 a.m. 6.2 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
Jan. 17, 2019, 3 a.m. 5.2 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 17, 2019, 2 a.m. 6.1 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 17, 2019, 1 a.m. 5.9 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2019, midnight 4.4 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 16, 2019, 11 p.m. 5.5 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Jan. 16, 2019, 10 p.m. 6.0 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 3.9 μg/m3 (16) 16.0
 
Jan. 16, 2019, 9 p.m. 5.7 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 3.5 μg/m3 (15) 15.0
 
Jan. 16, 2019, 8 p.m. 7.9 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2019, 7 p.m. 10.0 ppb (9) 3.5 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
Jan. 16, 2019, 6 p.m. 10.9 ppb (10) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 7.4 μg/m3 (31) 31.0
 
Jan. 16, 2019, 5 p.m. 10.1 ppb (9) 2.5 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 8.5 μg/m3 (35) 35.0
 
Jan. 16, 2019, 4 p.m. 11.2 ppb (10) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 11.3 μg/m3 (47) 47.0
 
Jan. 16, 2019, 3 p.m. 11.0 ppb (10) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 11.6 μg/m3 (48) 48.0
 
Jan. 16, 2019, 2 p.m. 11.9 ppb (11) 3.3 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 15.7 μg/m3 (58) 58.0
 
Jan. 16, 2019, 1 p.m. 12.5 ppb (12) 3.3 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) N/A 17.2 μg/m3 (61) 61.0
 
Jan. 16, 2019, noon 13.1 ppb (12) 4.2 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) N/A 18.1 μg/m3 (63) 63.0
 
Jan. 16, 2019, 11 a.m. 7.7 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 17.4 μg/m3 (61) 61.0
 
Jan. 16, 2019, 10 a.m. 6.5 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 17.7 μg/m3 (62) 62.0
 
Jan. 16, 2019, 9 a.m. 5.2 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 19.0 μg/m3 (65) 65.0
 
Jan. 16, 2019, 8 a.m. 5.0 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 19.9 μg/m3 (67) 67.0
 
Jan. 16, 2019, 7 a.m. 4.7 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 18.7 μg/m3 (64) 64.0
 
Jan. 16, 2019, 6 a.m. 6.1 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 16.7 μg/m3 (60) 60.0
 
Jan. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 15.4 μg/m3 (57) 57.0
 
Jan. 16, 2019, 4 a.m. 6.3 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 16.4 μg/m3 (59) 59.0
 
Jan. 16, 2019, 3 a.m. 7.5 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 17.7 μg/m3 (62) 62.0
 
Jan. 16, 2019, 2 a.m. 10.2 ppb (9) 2.5 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A 17.6 μg/m3 (62) 62.0
 
Jan. 16, 2019, 1 a.m. 11.2 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 15.1 μg/m3 (57) 57.0
 
Jan. 16, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.3 μg/m3 (55) 55.0
 
Jan. 15, 2019, 11 p.m. 21.8 ppb (20) 5.1 ppb (5) N/A 17.0 ppb (16) N/A N/A N/A 0.5 ppb (6) N/A 16.5 μg/m3 (60) 60.0
 
Jan. 15, 2019, 10 p.m. 21.2 ppb (20) 5.9 ppb (5) N/A 15.0 ppb (14) N/A N/A N/A 0.5 ppb (6) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 15, 2019, 9 p.m. 16.2 ppb (15) 4.6 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 12.9 μg/m3 (52) 52.0
 
Jan. 15, 2019, 8 p.m. 17.6 ppb (16) 5.8 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 10.7 μg/m3 (45) 45.0
 
Jan. 15, 2019, 7 p.m. 14.0 ppb (13) 4.5 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 10.8 μg/m3 (45) 45.0
 
Jan. 15, 2019, 6 p.m. 14.8 ppb (14) 5.1 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
Jan. 15, 2019, 5 p.m. 19.3 ppb (18) 6.6 ppb (6) N/A 13.0 ppb (12) N/A N/A N/A 0.4 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
Jan. 15, 2019, 4 p.m. 23.1 ppb (21) 8.5 ppb (8) N/A 15.0 ppb (14) N/A N/A N/A 0.3 ppb (3) N/A 11.8 μg/m3 (49) 49.0
 
Jan. 15, 2019, 3 p.m. 26.9 ppb (25) 10.4 ppb (10) N/A 16.0 ppb (15) N/A N/A N/A 0.3 ppb (3) N/A 12.9 μg/m3 (52) 52.0
 
Jan. 15, 2019, 2 p.m. 17.2 ppb (16) 6.0 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) N/A 15.7 μg/m3 (58) 58.0
 
Jan. 15, 2019, 1 p.m. 18.4 ppb (17) 6.0 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 15.5 μg/m3 (57) 57.0
 
Jan. 15, 2019, noon 16.0 ppb (15) 4.9 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 16.5 μg/m3 (60) 60.0
 
Jan. 15, 2019, 11 a.m. 12.5 ppb (12) 2.6 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 17.6 μg/m3 (62) 62.0
 
Jan. 15, 2019, 10 a.m. 14.9 ppb (14) 3.7 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) N/A 15.2 μg/m3 (57) 57.0
 
Jan. 15, 2019, 9 a.m. 9.5 ppb (9) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 12.5 μg/m3 (51) 51.0
 
Jan. 15, 2019, 8 a.m. 12.9 ppb (12) 1.8 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) N/A 13.3 μg/m3 (53) 53.0
 
Jan. 15, 2019, 7 a.m. 14.9 ppb (14) 1.8 ppb (2) N/A 13.0 ppb (12) N/A N/A N/A 0.3 ppb (3) N/A 13.5 μg/m3 (53) 53.0
 
Jan. 15, 2019, 6 a.m. 15.8 ppb (15) 1.5 ppb (1) N/A 14.0 ppb (13) N/A N/A N/A 0.3 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 15, 2019, 4 a.m. 22.4 ppb (21) 2.6 ppb (2) N/A 20.0 ppb (19) N/A N/A N/A 0.4 ppb (4) N/A 16.5 μg/m3 (60) 60.0
 
Jan. 15, 2019, 3 a.m. 25.5 ppb (24) 3.6 ppb (3) N/A 22.0 ppb (20) N/A N/A N/A 0.4 ppb (4) N/A 17.1 μg/m3 (61) 61.0
 
Jan. 15, 2019, 2 a.m. 34.8 ppb (32) 6.4 ppb (6) N/A 28.0 ppb (26) N/A N/A N/A 0.5 ppb (6) N/A 18.5 μg/m3 (64) 64.0
 
Jan. 15, 2019, 1 a.m. 40.2 ppb (37) 8.3 ppb (8) N/A 32.0 ppb (30) N/A N/A N/A 0.6 ppb (7) N/A 18.0 μg/m3 (63) 63.0
 
Jan. 15, 2019, midnight 44.8 ppb (41) 11.2 ppb (10) N/A 34.0 ppb (31) N/A N/A N/A 0.6 ppb (7) N/A 16.4 μg/m3 (59) 59.0
 
Jan. 14, 2019, 11 p.m. 35.3 ppb (33) 6.1 ppb (6) N/A 29.0 ppb (27) N/A N/A N/A 0.6 ppb (7) N/A 14.6 μg/m3 (56) 56.0
 
Jan. 14, 2019, 10 p.m. 19.8 ppb (18) 2.1 ppb (2) N/A 18.0 ppb (17) N/A N/A N/A 0.4 ppb (4) N/A 10.8 μg/m3 (45) 45.0
 
Jan. 14, 2019, 9 p.m. 29.7 ppb (28) 7.9 ppb (7) N/A 22.0 ppb (20) N/A N/A N/A 0.5 ppb (6) N/A 12.9 μg/m3 (52) 52.0
 
Jan. 14, 2019, 8 p.m. 22.9 ppb (21) 6.0 ppb (6) N/A 17.0 ppb (16) N/A N/A N/A 0.4 ppb (4) N/A 12.4 μg/m3 (51) 51.0
 
Jan. 14, 2019, 7 p.m. 23.0 ppb (21) 8.7 ppb (8) N/A 14.0 ppb (13) N/A N/A N/A 0.4 ppb (4) N/A 13.6 μg/m3 (53) 53.0
 
Jan. 14, 2019, 6 p.m. 22.6 ppb (21) 8.7 ppb (8) N/A 14.0 ppb (13) N/A N/A N/A 0.4 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 14, 2019, 5 p.m. 22.5 ppb (21) 9.0 ppb (8) N/A 13.0 ppb (12) N/A N/A N/A 0.4 ppb (4) N/A 12.3 μg/m3 (51) 51.0
 
Jan. 14, 2019, 4 p.m. 20.5 ppb (19) 8.1 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) N/A 13.3 μg/m3 (53) 53.0
 
Jan. 14, 2019, 3 p.m. 22.7 ppb (21) 7.9 ppb (7) N/A 15.0 ppb (14) N/A N/A N/A 0.4 ppb (4) N/A 12.8 μg/m3 (52) 52.0
 
Jan. 14, 2019, 2 p.m. 24.6 ppb (23) 8.3 ppb (8) N/A 16.0 ppb (15) N/A N/A N/A 0.4 ppb (4) N/A 12.7 μg/m3 (51) 51.0
 
Jan. 14, 2019, 1 p.m. 26.9 ppb (25) 8.3 ppb (8) N/A 19.0 ppb (18) N/A N/A N/A 0.4 ppb (4) N/A 12.1 μg/m3 (50) 50.0
 
Jan. 14, 2019, noon 21.1 ppb (20) 3.9 ppb (4) N/A 17.0 ppb (16) N/A N/A N/A 0.4 ppb (4) N/A 12.3 μg/m3 (51) 51.0
 
Jan. 14, 2019, 11 a.m. 17.6 ppb (16) 2.3 ppb (2) N/A 15.0 ppb (14) N/A N/A N/A 0.4 ppb (4) N/A 11.8 μg/m3 (49) 49.0
 
Jan. 14, 2019, 10 a.m. 11.5 ppb (11) 1.3 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
Jan. 14, 2019, 9 a.m. 10.8 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 11.2 μg/m3 (47) 47.0
 
Jan. 14, 2019, 8 a.m. 14.1 ppb (13) 1.7 ppb (2) N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) N/A 11.1 μg/m3 (46) 46.0