AQSQID: 090030025

Site Name: Hartford-Huntley

Location: Hartford, CT

Reporting: True, Located: True

Current AQI: 53.0

Hartford CT, US: 41.771444, -72.679923

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2019, 5 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A N/A 0.7 ppb (8) 25.0 μg/m3 (23) 13.3 μg/m3 (53) 53.0
 
Sept. 21, 2019, 4 a.m. N/A N/A N/A 29.0 ppb (27) N/A N/A N/A 1.03 ppb (11) 24.0 μg/m3 (22) 11.9 μg/m3 (50) 50.0
 
Sept. 21, 2019, 3 a.m. N/A N/A N/A 34.0 ppb (31) N/A N/A N/A 0.96 ppb (11) 24.0 μg/m3 (22) 11.4 μg/m3 (48) 48.0
 
Sept. 21, 2019, 2 a.m. N/A N/A N/A 34.0 ppb (31) N/A N/A N/A 0.79 ppb (9) 20.0 μg/m3 (18) 9.6 μg/m3 (40) 40.0
 
Sept. 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.73 ppb (8) 21.0 μg/m3 (19) 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2019, midnight N/A N/A N/A 26.0 ppb (24) N/A N/A N/A 0.6 ppb (7) 16.0 μg/m3 (15) 7.6 μg/m3 (32) 32.0
 
Sept. 20, 2019, 11 p.m. N/A N/A N/A 26.0 ppb (24) N/A N/A N/A 0.45 ppb (5) 16.0 μg/m3 (15) 7.2 μg/m3 (30) 30.0
 
Sept. 20, 2019, 10 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.24 ppb (3) 14.0 μg/m3 (13) 5.8 μg/m3 (24) 24.0
 
Sept. 20, 2019, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) 12.0 μg/m3 (11) 5.3 μg/m3 (22) 22.0
 
Sept. 20, 2019, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) 11.0 μg/m3 (10) 5.3 μg/m3 (22) 22.0
 
Sept. 20, 2019, 7 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.33 ppb (4) 14.0 μg/m3 (13) 5.6 μg/m3 (23) 23.0
 
Sept. 20, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) 14.0 μg/m3 (13) 5.5 μg/m3 (23) 23.0
 
Sept. 20, 2019, 5 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.39 ppb (4) 18.0 μg/m3 (16) 6.1 μg/m3 (25) 25.0
 
Sept. 20, 2019, 4 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.45 ppb (5) 27.0 μg/m3 (25) 7.9 μg/m3 (33) 33.0
 
Sept. 20, 2019, 3 p.m. N/A N/A N/A 29.0 ppb (27) N/A N/A N/A 0.7 ppb (8) 29.0 μg/m3 (26) 12.3 μg/m3 (51) 51.0
 
Sept. 20, 2019, 2 p.m. N/A N/A N/A 26.0 ppb (24) N/A N/A N/A 0.68 ppb (8) 35.0 μg/m3 (32) 15.5 μg/m3 (57) 57.0
 
Sept. 20, 2019, 1 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.74 ppb (8) 41.0 μg/m3 (37) 14.6 μg/m3 (56) 56.0
 
Sept. 20, 2019, noon N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.73 ppb (8) 31.0 μg/m3 (28) 14.6 μg/m3 (56) 56.0
 
Sept. 20, 2019, 11 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.73 ppb (8) 20.0 μg/m3 (18) 9.6 μg/m3 (40) 40.0
 
Sept. 20, 2019, 10 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.51 ppb (6) 16.0 μg/m3 (15) 8.7 μg/m3 (36) 36.0
 
Sept. 20, 2019, 9 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.46 ppb (5) 13.0 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
Sept. 20, 2019, 8 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.41 ppb (5) 13.0 μg/m3 (12) 7.1 μg/m3 (30) 30.0
 
Sept. 20, 2019, 7 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A N/A 16.0 μg/m3 (15) 8.9 μg/m3 (37) 37.0
 
Sept. 20, 2019, 6 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.59 ppb (7) 18.0 μg/m3 (16) 8.8 μg/m3 (37) 37.0
 
Sept. 20, 2019, 5 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.55 ppb (6) 18.0 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
Sept. 20, 2019, 4 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A N/A 0.5 ppb (6) 17.0 μg/m3 (15) 7.6 μg/m3 (32) 32.0
 
Sept. 20, 2019, 3 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A N/A 0.6 ppb (7) 18.0 μg/m3 (16) 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2019, 2 a.m. N/A N/A N/A 28.0 ppb (26) N/A N/A N/A 0.59 ppb (7) 17.0 μg/m3 (15) 8.2 μg/m3 (34) 34.0
 
Sept. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.77 ppb (9) 19.0 μg/m3 (17) 8.1 μg/m3 (34) 34.0
 
Sept. 20, 2019, midnight N/A N/A N/A 37.0 ppb (34) N/A N/A N/A 0.81 ppb (9) 24.0 μg/m3 (22) 10.3 μg/m3 (43) 43.0
 
Sept. 19, 2019, 11 p.m. N/A N/A N/A 31.0 ppb (29) N/A N/A N/A 0.45 ppb (5) 14.0 μg/m3 (13) 4.7 μg/m3 (20) 29.0
 
Sept. 19, 2019, 10 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.31 ppb (3) 12.0 μg/m3 (11) 4.1 μg/m3 (17) 17.0
 
Sept. 19, 2019, 9 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.23 ppb (3) 11.0 μg/m3 (10) 3.8 μg/m3 (16) 16.0
 
Sept. 19, 2019, 8 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.23 ppb (3) 12.0 μg/m3 (11) 3.7 μg/m3 (15) 15.0
 
Sept. 19, 2019, 7 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.23 ppb (3) 12.0 μg/m3 (11) 3.9 μg/m3 (16) 16.0
 
Sept. 19, 2019, 6 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.26 ppb (3) 12.0 μg/m3 (11) 4.1 μg/m3 (17) 17.0
 
Sept. 19, 2019, 5 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.26 ppb (3) 12.0 μg/m3 (11) 4.5 μg/m3 (19) 19.0
 
Sept. 19, 2019, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.21 ppb (2) 11.0 μg/m3 (10) 4.3 μg/m3 (18) 18.0
 
Sept. 19, 2019, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) 12.0 μg/m3 (11) 4.5 μg/m3 (19) 19.0
 
Sept. 19, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) 13.0 μg/m3 (12) 5.5 μg/m3 (23) 23.0
 
Sept. 19, 2019, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) 18.0 μg/m3 (16) 6.3 μg/m3 (26) 26.0
 
Sept. 19, 2019, noon N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.28 ppb (3) 14.0 μg/m3 (13) 6.4 μg/m3 (27) 27.0
 
Sept. 19, 2019, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.27 ppb (3) 12.0 μg/m3 (11) 5.9 μg/m3 (25) 25.0
 
Sept. 19, 2019, 10 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.24 ppb (3) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 9 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.21 ppb (2) 15.0 μg/m3 (14) 6.2 μg/m3 (26) 26.0
 
Sept. 19, 2019, 8 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.19 ppb (2) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 7 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A N/A 12.0 μg/m3 (11) 5.5 μg/m3 (23) 23.0
 
Sept. 19, 2019, 6 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.17 ppb (2) 11.0 μg/m3 (10) 5.4 μg/m3 (23) 23.0
 
Sept. 19, 2019, 5 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.29 ppb (3) 13.0 μg/m3 (12) 6.1 μg/m3 (25) 25.0
 
Sept. 19, 2019, 4 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.27 ppb (3) 13.0 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
Sept. 19, 2019, 3 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.27 ppb (3) 12.0 μg/m3 (11) 5.8 μg/m3 (24) 24.0
 
Sept. 19, 2019, 2 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.2 ppb (2) 12.0 μg/m3 (11) 5.3 μg/m3 (22) 22.0
 
Sept. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2019, midnight N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.2 ppb (2) 12.0 μg/m3 (11) 4.7 μg/m3 (20) 20.0
 
Sept. 18, 2019, 11 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.22 ppb (2) 12.0 μg/m3 (11) 4.6 μg/m3 (19) 19.0
 
Sept. 18, 2019, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.18 ppb (2) 12.0 μg/m3 (11) 4.6 μg/m3 (19) 19.0
 
Sept. 18, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.22 ppb (2) 10.0 μg/m3 (9) 4.4 μg/m3 (18) 18.0
 
Sept. 18, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) 11.0 μg/m3 (10) 4.4 μg/m3 (18) 18.0
 
Sept. 18, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (2) 11.0 μg/m3 (10) 4.4 μg/m3 (18) 18.0
 
Sept. 18, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) 11.0 μg/m3 (10) 4.4 μg/m3 (18) 18.0
 
Sept. 18, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) 14.0 μg/m3 (13) 4.9 μg/m3 (20) 20.0
 
Sept. 18, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) 11.0 μg/m3 (10) 4.5 μg/m3 (19) 19.0
 
Sept. 18, 2019, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) 10.0 μg/m3 (9) 4.2 μg/m3 (18) 18.0
 
Sept. 18, 2019, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) 10.0 μg/m3 (9) 3.9 μg/m3 (16) 16.0
 
Sept. 18, 2019, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (2) 10.0 μg/m3 (9) 4.2 μg/m3 (18) 18.0
 
Sept. 18, 2019, noon N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (2) 9.0 μg/m3 (8) 4.4 μg/m3 (18) 18.0
 
Sept. 18, 2019, 11 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.23 ppb (3) 10.0 μg/m3 (9) 4.5 μg/m3 (19) 19.0
 
Sept. 18, 2019, 10 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.21 ppb (2) 10.0 μg/m3 (9) 4.3 μg/m3 (18) 18.0
 
Sept. 18, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.18 ppb (2) 9.0 μg/m3 (8) 4.2 μg/m3 (18) 18.0
 
Sept. 18, 2019, 8 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.18 ppb (2) 10.0 μg/m3 (9) 4.5 μg/m3 (19) 19.0
 
Sept. 18, 2019, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A N/A 11.0 μg/m3 (10) 4.7 μg/m3 (20) 20.0
 
Sept. 18, 2019, 6 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.2 ppb (2) 12.0 μg/m3 (11) 4.9 μg/m3 (20) 20.0
 
Sept. 18, 2019, 5 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.22 ppb (2) 12.0 μg/m3 (11) 5.3 μg/m3 (22) 22.0
 
Sept. 18, 2019, 4 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.26 ppb (3) 11.0 μg/m3 (10) 5.2 μg/m3 (22) 22.0
 
Sept. 18, 2019, 3 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.35 ppb (4) 14.0 μg/m3 (13) 5.7 μg/m3 (24) 24.0
 
Sept. 18, 2019, 2 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.34 ppb (4) 13.0 μg/m3 (12) 5.4 μg/m3 (23) 23.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.35 ppb (4) 11.0 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
Sept. 18, 2019, midnight N/A N/A N/A 23.0 ppb (21) N/A N/A N/A 0.36 ppb (4) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 11 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A 0.36 ppb (4) 14.0 μg/m3 (13) 4.6 μg/m3 (19) 20.0
 
Sept. 17, 2019, 10 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.21 ppb (2) 9.0 μg/m3 (8) 3.4 μg/m3 (14) 14.0
 
Sept. 17, 2019, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.17 ppb (2) 10.0 μg/m3 (9) 3.2 μg/m3 (13) 13.0
 
Sept. 17, 2019, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.17 ppb (2) 9.0 μg/m3 (8) 3.5 μg/m3 (15) 15.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (2) 12.0 μg/m3 (11) 3.5 μg/m3 (15) 15.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) 8.0 μg/m3 (7) 3.2 μg/m3 (13) 13.0
 
Sept. 17, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) 10.0 μg/m3 (9) 3.9 μg/m3 (16) 16.0
 
Sept. 17, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) 14.0 μg/m3 (13) 4.6 μg/m3 (19) 19.0
 
Sept. 17, 2019, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.22 ppb (2) 12.0 μg/m3 (11) 4.7 μg/m3 (20) 20.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A N/A 11.0 μg/m3 (10) 4.5 μg/m3 (19) 19.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (2) 12.0 μg/m3 (11) 4.6 μg/m3 (19) 19.0
 
Sept. 17, 2019, noon N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.23 ppb (3) 12.0 μg/m3 (11) 4.7 μg/m3 (20) 20.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.39 ppb (4) 16.0 μg/m3 (15) 5.6 μg/m3 (23) 23.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.4 ppb (4) 15.0 μg/m3 (14) 5.5 μg/m3 (23) 23.0
 
Sept. 17, 2019, 9 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.2 ppb (2) 13.0 μg/m3 (12) 4.8 μg/m3 (20) 20.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.15 ppb (2) 10.0 μg/m3 (9) 4.3 μg/m3 (18) 18.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A N/A 10.0 μg/m3 (9) 4.1 μg/m3 (17) 17.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (2) 10.0 μg/m3 (9) 4.1 μg/m3 (17) 17.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.17 ppb (2) 10.0 μg/m3 (9) 4.4 μg/m3 (18) 18.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.19 ppb (2) 10.0 μg/m3 (9) 4.5 μg/m3 (19) 19.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.24 ppb (3) 12.0 μg/m3 (11) 4.5 μg/m3 (19) 19.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.3 ppb (3) 12.0 μg/m3 (11) 4.6 μg/m3 (19) 19.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) 11.0 μg/m3 (10) 4.3 μg/m3 (18) 18.0
 
Sept. 17, 2019, midnight N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.21 ppb (2) 11.0 μg/m3 (10) 3.6 μg/m3 (15) 15.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.22 ppb (2) 10.0 μg/m3 (9) 3.4 μg/m3 (14) 14.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) 9.0 μg/m3 (8) 3.2 μg/m3 (13) 13.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) 10.0 μg/m3 (9) 3.1 μg/m3 (13) 13.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) 9.0 μg/m3 (8) 3.3 μg/m3 (14) 14.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) 8.0 μg/m3 (7) 3.3 μg/m3 (14) 14.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.19 ppb (2) 8.0 μg/m3 (7) 3.1 μg/m3 (13) 13.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) 8.0 μg/m3 (7) 3.2 μg/m3 (13) 13.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (2) 9.0 μg/m3 (8) 3.6 μg/m3 (15) 15.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) 11.0 μg/m3 (10) 4.4 μg/m3 (18) 18.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) 10.0 μg/m3 (9) 4.7 μg/m3 (20) 20.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.19 ppb (2) 12.0 μg/m3 (11) 5.4 μg/m3 (23) 23.0
 
Sept. 16, 2019, noon N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.23 ppb (3) 13.0 μg/m3 (12) 6.4 μg/m3 (27) 27.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.28 ppb (3) 14.0 μg/m3 (13) 6.8 μg/m3 (28) 28.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.26 ppb (3) 15.0 μg/m3 (14) 6.5 μg/m3 (27) 27.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.19 ppb (2) 12.0 μg/m3 (11) 6.3 μg/m3 (26) 26.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) 14.0 μg/m3 (13) 6.8 μg/m3 (28) 28.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A N/A 13.0 μg/m3 (12) 6.3 μg/m3 (26) 26.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) 13.0 μg/m3 (12) 6.3 μg/m3 (26) 26.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.26 ppb (3) 25.0 μg/m3 (23) 17.2 μg/m3 (61) 61.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.29 ppb (3) 15.0 μg/m3 (14) 7.5 μg/m3 (31) 31.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.51 ppb (6) 19.0 μg/m3 (17) 8.8 μg/m3 (37) 37.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A N/A 0.59 ppb (7) 19.0 μg/m3 (17) 9.3 μg/m3 (39) 39.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.62 ppb (7) 14.0 μg/m3 (13) 8.3 μg/m3 (35) 35.0
 
Sept. 16, 2019, midnight N/A N/A N/A 29.0 ppb (27) N/A N/A N/A 0.71 ppb (8) 14.0 μg/m3 (13) 7.2 μg/m3 (30) 30.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.54 ppb (6) 11.0 μg/m3 (10) 5.6 μg/m3 (23) 23.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.25 ppb (3) 8.0 μg/m3 (7) 4.2 μg/m3 (18) 18.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) 7.0 μg/m3 (6) 3.7 μg/m3 (15) 15.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) 7.0 μg/m3 (6) 3.4 μg/m3 (14) 14.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (2) 10.0 μg/m3 (9) 3.9 μg/m3 (16) 16.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (2) 9.0 μg/m3 (8) 4.4 μg/m3 (18) 18.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (3) 11.0 μg/m3 (10) 4.9 μg/m3 (20) 20.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) 10.0 μg/m3 (9) 4.9 μg/m3 (20) 20.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (2) 10.0 μg/m3 (9) 5.2 μg/m3 (22) 22.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) 12.0 μg/m3 (11) 5.6 μg/m3 (23) 23.0
 
Sept. 15, 2019, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (2) 12.0 μg/m3 (11) 5.6 μg/m3 (23) 23.0
 
Sept. 15, 2019, noon N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) 13.0 μg/m3 (12) 6.1 μg/m3 (25) 25.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.42 ppb (5) 15.0 μg/m3 (14) 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.37 ppb (4) 14.0 μg/m3 (13) 6.3 μg/m3 (26) 26.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (2) 14.0 μg/m3 (13) 6.2 μg/m3 (26) 26.0
 
Sept. 15, 2019, 7 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A N/A 15.0 μg/m3 (14) 6.6 μg/m3 (28) 28.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.34 ppb (4) 14.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.37 ppb (4) 14.0 μg/m3 (13) 6.3 μg/m3 (26) 26.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.39 ppb (4) 13.0 μg/m3 (12) 6.6 μg/m3 (28) 28.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.37 ppb (4) 17.0 μg/m3 (15) 7.9 μg/m3 (33) 33.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.38 ppb (4) 21.0 μg/m3 (19) 9.4 μg/m3 (39) 39.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.35 ppb (4) 26.0 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
Sept. 15, 2019, midnight N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.34 ppb (4) 23.0 μg/m3 (21) 9.3 μg/m3 (39) 39.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.47 ppb (5) 33.0 μg/m3 (30) 12.2 μg/m3 (50) 50.0
 
Sept. 14, 2019, 10 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.46 ppb (5) 36.0 μg/m3 (33) 12.8 μg/m3 (52) 52.0
 
Sept. 14, 2019, 9 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.45 ppb (5) 22.0 μg/m3 (20) 7.4 μg/m3 (31) 31.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.47 ppb (5) 22.0 μg/m3 (20) 7.3 μg/m3 (30) 30.0
 
Sept. 14, 2019, 7 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.43 ppb (5) 19.0 μg/m3 (17) 6.9 μg/m3 (29) 29.0
 
Sept. 14, 2019, 6 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.46 ppb (5) 22.0 μg/m3 (20) 8.4 μg/m3 (35) 35.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.4 ppb (4) 35.0 μg/m3 (32) 10.3 μg/m3 (43) 43.0
 
Sept. 14, 2019, 4 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.37 ppb (4) 19.0 μg/m3 (17) 6.1 μg/m3 (25) 25.0
 
Sept. 14, 2019, 3 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.38 ppb (4) 19.0 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 2 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.46 ppb (5) 19.0 μg/m3 (17) 6.4 μg/m3 (27) 27.0
 
Sept. 14, 2019, 1 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.49 ppb (5) 18.0 μg/m3 (16) 6.3 μg/m3 (26) 26.0
 
Sept. 14, 2019, noon N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.42 ppb (5) 21.0 μg/m3 (19) 7.1 μg/m3 (30) 30.0
 
Sept. 14, 2019, 11 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.38 ppb (4) 16.0 μg/m3 (15) 6.5 μg/m3 (27) 27.0
 
Sept. 14, 2019, 10 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.26 ppb (3) 15.0 μg/m3 (14) 6.6 μg/m3 (28) 28.0
 
Sept. 14, 2019, 9 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.27 ppb (3) 14.0 μg/m3 (13) 6.7 μg/m3 (28) 28.0
 
Sept. 14, 2019, 8 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.22 ppb (2) 14.0 μg/m3 (13) 6.4 μg/m3 (27) 27.0
 
Sept. 14, 2019, 7 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A N/A 15.0 μg/m3 (14) 6.1 μg/m3 (25) 25.0
 
Sept. 14, 2019, 6 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.21 ppb (2) 12.0 μg/m3 (11) 5.7 μg/m3 (24) 24.0