AQSQID: 090030025

Site Name: Hartford-Huntley

Location: Hartford, CT

Reporting: True, Located: True

Current AQI: 16.0

Hartford CT, US: 41.771444, -72.679923

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 18, 2019, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) 8.0 μg/m3 (7) 3.9 μg/m3 (16) 16.0
 
March 18, 2019, 1 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) 3.9 μg/m3 (16) 16.0
 
March 18, 2019, noon N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.21 ppb (2) 9.0 μg/m3 (8) 3.9 μg/m3 (16) 16.0
 
March 18, 2019, 11 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.28 ppb (3) 11.0 μg/m3 (10) 4.1 μg/m3 (17) 17.0
 
March 18, 2019, 10 a.m. N/A N/A N/A 34.0 ppb (31) N/A N/A N/A 0.54 ppb (6) 20.0 μg/m3 (18) 5.8 μg/m3 (24) 31.0
 
March 18, 2019, 9 a.m. N/A N/A N/A 35.0 ppb (32) N/A N/A N/A 0.45 ppb (5) 16.0 μg/m3 (15) 5.2 μg/m3 (22) 32.0
 
March 18, 2019, 8 a.m. N/A N/A N/A 36.0 ppb (33) N/A N/A N/A 0.36 ppb (4) 13.0 μg/m3 (12) 4.8 μg/m3 (20) 33.0
 
March 18, 2019, 7 a.m. N/A N/A N/A 30.0 ppb (28) N/A N/A N/A N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 28.0
 
March 18, 2019, 6 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.26 ppb (3) 8.0 μg/m3 (7) 3.5 μg/m3 (15) 19.0
 
March 18, 2019, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.18 ppb (2) 5.0 μg/m3 (5) 2.8 μg/m3 (12) 12.0
 
March 18, 2019, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.14 ppb (2) 4.0 μg/m3 (4) 2.6 μg/m3 (11) 11.0
 
March 18, 2019, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) 5.0 μg/m3 (5) 2.4 μg/m3 (10) 10.0
 
March 18, 2019, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.15 ppb (2) 6.0 μg/m3 (5) 2.7 μg/m3 (11) 11.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) 7.0 μg/m3 (6) 2.8 μg/m3 (12) 12.0
 
March 18, 2019, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.15 ppb (2) 6.0 μg/m3 (5) 2.6 μg/m3 (11) 11.0
 
March 17, 2019, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (2) 7.0 μg/m3 (6) 2.8 μg/m3 (12) 12.0
 
March 17, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) 5.0 μg/m3 (5) 2.6 μg/m3 (11) 11.0
 
March 17, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) 6.0 μg/m3 (5) 2.4 μg/m3 (10) 10.0
 
March 17, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) 5.0 μg/m3 (5) 2.2 μg/m3 (9) 9.0
 
March 17, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) 4.0 μg/m3 (4) 2.2 μg/m3 (9) 9.0
 
March 17, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 8.0
 
March 17, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) 5.0 μg/m3 (5) 1.9 μg/m3 (8) 8.0
 
March 17, 2019, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) 4.0 μg/m3 (4) 2.0 μg/m3 (8) 8.0
 
March 17, 2019, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) 3.0 μg/m3 (3) 2.2 μg/m3 (9) 9.0
 
March 17, 2019, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) 4.0 μg/m3 (4) 2.6 μg/m3 (11) 11.0
 
March 17, 2019, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) 5.0 μg/m3 (5) 2.2 μg/m3 (9) 9.0
 
March 17, 2019, noon N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.13 ppb (1) 4.0 μg/m3 (4) 2.2 μg/m3 (9) 9.0
 
March 17, 2019, 11 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.15 ppb (2) 5.0 μg/m3 (5) 2.2 μg/m3 (9) 9.0
 
March 17, 2019, 10 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.15 ppb (2) 4.0 μg/m3 (4) 2.2 μg/m3 (9) 9.0
 
March 17, 2019, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.14 ppb (2) 4.0 μg/m3 (4) 1.9 μg/m3 (8) 8.0
 
March 17, 2019, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.13 ppb (1) 4.0 μg/m3 (4) 1.9 μg/m3 (8) 8.0
 
March 17, 2019, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A N/A 4.0 μg/m3 (4) 2.1 μg/m3 (9) 9.0
 
March 17, 2019, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.13 ppb (1) 4.0 μg/m3 (4) 2.1 μg/m3 (9) 9.0
 
March 17, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.15 ppb (2) 5.0 μg/m3 (5) 2.6 μg/m3 (11) 11.0
 
March 17, 2019, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.15 ppb (2) 7.0 μg/m3 (6) 2.8 μg/m3 (12) 12.0
 
March 17, 2019, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.17 ppb (2) 7.0 μg/m3 (6) 3.3 μg/m3 (14) 14.0
 
March 17, 2019, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.18 ppb (2) 7.0 μg/m3 (6) 3.4 μg/m3 (14) 14.0
 
March 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) 6.0 μg/m3 (5) 3.2 μg/m3 (13) 13.0
 
March 17, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.14 ppb (2) 6.0 μg/m3 (5) 2.9 μg/m3 (12) 12.0
 
March 16, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 12.0
 
March 16, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) 7.0 μg/m3 (6) 3.1 μg/m3 (13) 13.0
 
March 16, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) 7.0 μg/m3 (6) 3.2 μg/m3 (13) 13.0
 
March 16, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
March 16, 2019, 7 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) 2.7 μg/m3 (11) 11.0
 
March 16, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 8.0
 
March 16, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) 3.0 μg/m3 (3) 1.7 μg/m3 (7) 7.0
 
March 16, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) 5.0 μg/m3 (5) 1.7 μg/m3 (7) 7.0
 
March 16, 2019, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) 5.0 μg/m3 (5) 1.5 μg/m3 (6) 6.0
 
March 16, 2019, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (2) 5.0 μg/m3 (5) 1.3 μg/m3 (5) 5.0
 
March 16, 2019, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (2) 7.0 μg/m3 (6) 2.1 μg/m3 (9) 9.0
 
March 16, 2019, noon N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.32 ppb (4) 17.0 μg/m3 (15) 4.7 μg/m3 (20) 20.0
 
March 16, 2019, 11 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.45 ppb (5) 18.0 μg/m3 (16) 5.6 μg/m3 (23) 23.0
 
March 16, 2019, 10 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.25 ppb (3) 9.0 μg/m3 (8) 4.7 μg/m3 (20) 20.0
 
March 16, 2019, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) 8.0 μg/m3 (7) 5.1 μg/m3 (21) 21.0
 
March 16, 2019, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.21 ppb (2) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
March 16, 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) 6.4 μg/m3 (27) 27.0
 
March 16, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.32 ppb (4) 11.0 μg/m3 (10) 6.6 μg/m3 (28) 28.0
 
March 16, 2019, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) 11.0 μg/m3 (10) 5.6 μg/m3 (23) 23.0
 
March 16, 2019, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) 13.0 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
March 16, 2019, 3 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.43 ppb (5) 30.0 μg/m3 (27) 17.2 μg/m3 (61) 61.0
 
March 16, 2019, 2 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.43 ppb (5) 31.0 μg/m3 (28) 16.8 μg/m3 (60) 60.0
 
March 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.37 ppb (4) 42.0 μg/m3 (38) 20.1 μg/m3 (67) 67.0
 
March 16, 2019, midnight N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.41 ppb (5) 30.0 μg/m3 (27) 14.8 μg/m3 (56) 56.0
 
March 15, 2019, 11 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.49 ppb (5) 27.0 μg/m3 (25) 13.3 μg/m3 (53) 53.0
 
March 15, 2019, 10 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.47 ppb (5) 30.0 μg/m3 (27) 13.0 μg/m3 (52) 52.0
 
March 15, 2019, 9 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.43 ppb (5) 32.0 μg/m3 (29) 13.2 μg/m3 (53) 53.0
 
March 15, 2019, 8 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.49 ppb (5) 34.0 μg/m3 (31) 14.2 μg/m3 (55) 55.0
 
March 15, 2019, 7 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.43 ppb (5) 34.0 μg/m3 (31) 14.1 μg/m3 (54) 54.0
 
March 15, 2019, 6 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.37 ppb (4) 41.0 μg/m3 (37) 14.6 μg/m3 (56) 56.0
 
March 15, 2019, 5 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.45 ppb (5) 40.0 μg/m3 (36) 15.2 μg/m3 (57) 57.0
 
March 15, 2019, 4 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.43 ppb (5) 45.0 μg/m3 (41) 16.0 μg/m3 (59) 59.0
 
March 15, 2019, 3 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) 28.0 μg/m3 (25) 13.1 μg/m3 (52) 52.0
 
March 15, 2019, 2 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.38 ppb (4) 30.0 μg/m3 (27) 13.0 μg/m3 (52) 52.0
 
March 15, 2019, 1 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.35 ppb (4) 25.0 μg/m3 (23) 12.6 μg/m3 (51) 51.0
 
March 15, 2019, noon N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.38 ppb (4) 25.0 μg/m3 (23) 12.3 μg/m3 (51) 51.0
 
March 15, 2019, 11 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.36 ppb (4) 23.0 μg/m3 (21) 11.2 μg/m3 (47) 47.0
 
March 15, 2019, 10 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.29 ppb (3) 20.0 μg/m3 (18) 10.1 μg/m3 (42) 42.0
 
March 15, 2019, 9 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.25 ppb (3) 20.0 μg/m3 (18) 9.8 μg/m3 (41) 41.0
 
March 15, 2019, 8 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) 18.0 μg/m3 (16) 8.9 μg/m3 (37) 37.0
 
March 15, 2019, 7 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A N/A 16.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 6 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.18 ppb (2) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
March 15, 2019, 5 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.21 ppb (2) 13.0 μg/m3 (12) 6.4 μg/m3 (27) 27.0
 
March 15, 2019, 4 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.24 ppb (3) 14.0 μg/m3 (13) 6.5 μg/m3 (27) 27.0
 
March 15, 2019, 3 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.29 ppb (3) 16.0 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
March 15, 2019, 2 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.39 ppb (4) 16.0 μg/m3 (15) 7.2 μg/m3 (30) 30.0
 
March 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.38 ppb (4) 14.0 μg/m3 (13) 6.7 μg/m3 (28) 28.0
 
March 15, 2019, midnight N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.4 ppb (4) 16.0 μg/m3 (15) 6.6 μg/m3 (28) 28.0
 
March 14, 2019, 11 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.44 ppb (5) 18.0 μg/m3 (16) 6.7 μg/m3 (28) 28.0
 
March 14, 2019, 10 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.47 ppb (5) 23.0 μg/m3 (21) 7.3 μg/m3 (30) 30.0
 
March 14, 2019, 9 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A 0.48 ppb (5) 19.0 μg/m3 (17) 6.7 μg/m3 (28) 28.0
 
March 14, 2019, 8 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.43 ppb (5) 18.0 μg/m3 (16) 7.1 μg/m3 (30) 30.0
 
March 14, 2019, 7 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.47 ppb (5) 23.0 μg/m3 (21) 8.1 μg/m3 (34) 34.0
 
March 14, 2019, 6 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) 21.0 μg/m3 (19) 8.1 μg/m3 (34) 34.0
 
March 14, 2019, 5 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.41 ppb (5) 24.0 μg/m3 (22) 8.6 μg/m3 (36) 36.0
 
March 14, 2019, 4 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.41 ppb (5) 26.0 μg/m3 (24) 9.8 μg/m3 (41) 41.0
 
March 14, 2019, 3 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.42 ppb (5) 26.0 μg/m3 (24) 10.3 μg/m3 (43) 43.0
 
March 14, 2019, 2 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A 0.4 ppb (4) 27.0 μg/m3 (25) 10.3 μg/m3 (43) 43.0
 
March 14, 2019, 1 p.m. N/A N/A N/A 25.0 ppb (23) N/A N/A N/A 0.43 ppb (5) 26.0 μg/m3 (24) 11.2 μg/m3 (47) 47.0
 
March 14, 2019, noon N/A N/A N/A 32.0 ppb (30) N/A N/A N/A 0.59 ppb (7) 26.0 μg/m3 (24) 11.1 μg/m3 (46) 46.0
 
March 14, 2019, 11 a.m. N/A N/A N/A 31.0 ppb (29) N/A N/A N/A 0.53 ppb (6) 25.0 μg/m3 (23) 10.3 μg/m3 (43) 43.0
 
March 14, 2019, 10 a.m. N/A N/A N/A 28.0 ppb (26) N/A N/A N/A 0.46 ppb (5) 23.0 μg/m3 (21) 9.7 μg/m3 (40) 40.0
 
March 14, 2019, 9 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.31 ppb (3) 25.0 μg/m3 (23) 10.0 μg/m3 (42) 42.0
 
March 14, 2019, 8 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.25 ppb (3) 21.0 μg/m3 (19) 10.3 μg/m3 (43) 43.0
 
March 14, 2019, 7 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A N/A 23.0 μg/m3 (21) 11.1 μg/m3 (46) 46.0
 
March 14, 2019, 6 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.24 ppb (3) 25.0 μg/m3 (23) 11.4 μg/m3 (48) 48.0
 
March 14, 2019, 5 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.27 ppb (3) 21.0 μg/m3 (19) 11.4 μg/m3 (48) 48.0
 
March 14, 2019, 4 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.32 ppb (4) 19.0 μg/m3 (17) 11.5 μg/m3 (48) 48.0
 
March 14, 2019, 3 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.33 ppb (4) 19.0 μg/m3 (17) 11.2 μg/m3 (47) 47.0
 
March 14, 2019, 2 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.36 ppb (4) 20.0 μg/m3 (18) 10.4 μg/m3 (43) 43.0
 
March 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.39 ppb (4) 18.0 μg/m3 (16) 8.9 μg/m3 (37) 37.0
 
March 14, 2019, midnight N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.36 ppb (4) 19.0 μg/m3 (17) 8.4 μg/m3 (35) 35.0
 
March 13, 2019, 11 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.39 ppb (4) 21.0 μg/m3 (19) 8.7 μg/m3 (36) 36.0
 
March 13, 2019, 10 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.44 ppb (5) 22.0 μg/m3 (20) 7.4 μg/m3 (31) 31.0
 
March 13, 2019, 9 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.43 ppb (5) 15.0 μg/m3 (14) 5.7 μg/m3 (24) 24.0
 
March 13, 2019, 8 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.46 ppb (5) 17.0 μg/m3 (15) 6.3 μg/m3 (26) 26.0
 
March 13, 2019, 7 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.45 ppb (5) 21.0 μg/m3 (19) 6.6 μg/m3 (28) 28.0
 
March 13, 2019, 6 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.41 ppb (5) 22.0 μg/m3 (20) 7.0 μg/m3 (29) 29.0
 
March 13, 2019, 5 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.38 ppb (4) 18.0 μg/m3 (16) 6.8 μg/m3 (28) 28.0
 
March 13, 2019, 4 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.37 ppb (4) 21.0 μg/m3 (19) 7.5 μg/m3 (31) 31.0
 
March 13, 2019, 3 p.m. N/A N/A N/A 27.0 ppb (25) N/A N/A N/A 0.52 ppb (6) 28.0 μg/m3 (25) 11.2 μg/m3 (47) 47.0
 
March 13, 2019, 2 p.m. N/A N/A N/A 26.0 ppb (24) N/A N/A N/A 0.47 ppb (5) 24.0 μg/m3 (22) 9.6 μg/m3 (40) 40.0
 
March 13, 2019, 1 p.m. N/A N/A N/A 25.0 ppb (23) N/A N/A N/A 0.41 ppb (5) 18.0 μg/m3 (16) 9.3 μg/m3 (39) 39.0
 
March 13, 2019, noon N/A N/A N/A 36.0 ppb (33) N/A N/A N/A 0.73 ppb (8) 27.0 μg/m3 (25) 11.2 μg/m3 (47) 47.0
 
March 13, 2019, 11 a.m. N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 0.75 ppb (8) 21.0 μg/m3 (19) 7.8 μg/m3 (32) 42.0
 
March 13, 2019, 10 a.m. N/A N/A N/A 38.0 ppb (35) N/A N/A N/A 0.47 ppb (5) 15.0 μg/m3 (14) 7.2 μg/m3 (30) 35.0
 
March 13, 2019, 9 a.m. N/A N/A N/A 38.0 ppb (35) N/A N/A N/A 0.36 ppb (4) 15.0 μg/m3 (14) 7.6 μg/m3 (32) 35.0
 
March 13, 2019, 8 a.m. N/A N/A N/A 26.0 ppb (24) N/A N/A N/A 0.25 ppb (3) 11.0 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
March 13, 2019, 7 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A N/A 10.0 μg/m3 (9) 5.7 μg/m3 (24) 24.0
 
March 13, 2019, 6 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.19 ppb (2) 10.0 μg/m3 (9) 5.6 μg/m3 (23) 23.0
 
March 13, 2019, 5 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.24 ppb (3) 10.0 μg/m3 (9) 5.8 μg/m3 (24) 24.0
 
March 13, 2019, 4 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.22 ppb (2) 10.0 μg/m3 (9) 5.7 μg/m3 (24) 24.0
 
March 13, 2019, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.2 ppb (2) 9.0 μg/m3 (8) 5.2 μg/m3 (22) 22.0
 
March 13, 2019, 2 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) 5.2 μg/m3 (22) 22.0
 
March 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) 11.0 μg/m3 (10) 5.3 μg/m3 (22) 22.0
 
March 13, 2019, midnight N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.19 ppb (2) 11.0 μg/m3 (10) 5.3 μg/m3 (22) 22.0
 
March 12, 2019, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (2) 10.0 μg/m3 (9) 5.2 μg/m3 (22) 22.0
 
March 12, 2019, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) 10.0 μg/m3 (9) 5.3 μg/m3 (22) 22.0
 
March 12, 2019, 9 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) 5.0 μg/m3 (21) 21.0
 
March 12, 2019, 8 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) 4.9 μg/m3 (20) 20.0
 
March 12, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) 12.0 μg/m3 (11) 5.1 μg/m3 (21) 21.0
 
March 12, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) 11.0 μg/m3 (10) 4.9 μg/m3 (20) 20.0
 
March 12, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) 10.0 μg/m3 (9) 4.9 μg/m3 (20) 20.0
 
March 12, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) 11.0 μg/m3 (10) 4.6 μg/m3 (19) 19.0
 
March 12, 2019, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 17.0
 
March 12, 2019, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.18 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
March 12, 2019, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (2) N/A N/A 5.0
 
March 12, 2019, noon N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A N/A 6.0
 
March 12, 2019, 11 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.21 ppb (2) 16.0 μg/m3 (15) 5.5 μg/m3 (23) 23.0
 
March 12, 2019, 10 a.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) 5.7 μg/m3 (24) 24.0
 
March 12, 2019, 9 a.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) 5.7 μg/m3 (24) 24.0
 
March 12, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) 10.0 μg/m3 (9) 6.3 μg/m3 (26) 26.0
 
March 12, 2019, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A N/A 11.0 μg/m3 (10) 7.2 μg/m3 (30) 30.0
 
March 12, 2019, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
March 12, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (2) 13.0 μg/m3 (12) 8.9 μg/m3 (37) 37.0
 
March 12, 2019, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (2) 12.0 μg/m3 (11) 8.5 μg/m3 (35) 35.0
 
March 12, 2019, 3 a.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) 7.5 μg/m3 (31) 31.0
 
March 12, 2019, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (2) 13.0 μg/m3 (12) 8.7 μg/m3 (36) 36.0
 
March 12, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) 15.0 μg/m3 (14) 9.1 μg/m3 (38) 38.0
 
March 12, 2019, midnight N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.19 ppb (2) 13.0 μg/m3 (12) 8.2 μg/m3 (34) 34.0
 
March 11, 2019, 11 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.2 ppb (2) 14.0 μg/m3 (13) 7.7 μg/m3 (32) 32.0
 
March 11, 2019, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) 13.0 μg/m3 (12) 6.5 μg/m3 (27) 27.0
 
March 11, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) 13.0 μg/m3 (12) 6.8 μg/m3 (28) 28.0
 
March 11, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) 13.0 μg/m3 (12) 6.8 μg/m3 (28) 28.0
 
March 11, 2019, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) 17.0 μg/m3 (15) 7.2 μg/m3 (30) 30.0
 
March 11, 2019, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (2) 18.0 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
March 11, 2019, 5 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.28 ppb (3) 21.0 μg/m3 (19) 8.6 μg/m3 (36) 36.0
 
March 11, 2019, 4 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.26 ppb (3) 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
March 11, 2019, 3 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.32 ppb (4) 43.0 μg/m3 (39) 12.5 μg/m3 (51) 51.0