AQSQID: 090030025

Site Name: Hartford-Huntley

Location: Hartford (Downtown), CT

Reporting: True, Located: True

Current AQI: 13.0

Hartford (Downtown) CT, US: 41.771444, -72.679923

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 17, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.12 ppb (1) 9.0 μg/m3 (8) 3.2 μg/m3 (13) 13.0
 
Jan. 17, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) 5.0 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Jan. 17, 2020, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) 5.0 μg/m3 (5) 2.8 μg/m3 (12) 12.0
 
Jan. 17, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) 4.0 μg/m3 (4) 2.2 μg/m3 (9) 9.0
 
Jan. 17, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.13 ppb (1) 3.0 μg/m3 (3) 2.1 μg/m3 (9) 9.0
 
Jan. 17, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) 3.0 μg/m3 (3) 1.9 μg/m3 (8) 8.0
 
Jan. 17, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) 3.0 μg/m3 (3) 1.4 μg/m3 (6) 6.0
 
Jan. 16, 2020, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (2) 5.0 μg/m3 (5) 2.7 μg/m3 (11) 11.0
 
Jan. 16, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) 4.0 μg/m3 (4) 2.1 μg/m3 (9) 9.0
 
Jan. 16, 2020, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) 4.0 μg/m3 (4) 1.6 μg/m3 (7) 7.0
 
Jan. 16, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) 4.0 μg/m3 (4) 1.8 μg/m3 (8) 8.0
 
Jan. 16, 2020, 7 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) 2.5 μg/m3 (10) 10.0
 
Jan. 16, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.24 ppb (3) 10.0 μg/m3 (9) 3.2 μg/m3 (13) 13.0
 
Jan. 16, 2020, 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) 4.1 μg/m3 (17) 17.0
 
Jan. 16, 2020, 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) 3.9 μg/m3 (16) 16.0
 
Jan. 16, 2020, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) 9.0 μg/m3 (8) 6.5 μg/m3 (27) 27.0
 
Jan. 16, 2020, 2 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.38 ppb (4) 20.0 μg/m3 (18) 14.7 μg/m3 (56) 56.0
 
Jan. 16, 2020, 1 p.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.93 ppb (10) 28.0 μg/m3 (25) 20.4 μg/m3 (68) 68.0
 
Jan. 16, 2020, noon N/A N/A N/A 26.0 ppb (24) N/A N/A N/A 0.72 ppb (8) 28.0 μg/m3 (25) 19.8 μg/m3 (67) 67.0
 
Jan. 16, 2020, 11 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A N/A 0.64 ppb (7) 29.0 μg/m3 (26) 18.0 μg/m3 (63) 63.0
 
Jan. 16, 2020, 10 a.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A 0.41 ppb (5) 23.0 μg/m3 (21) 15.1 μg/m3 (57) 57.0
 
Jan. 16, 2020, 9 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.38 ppb (4) 19.0 μg/m3 (17) 13.5 μg/m3 (53) 53.0
 
Jan. 16, 2020, 8 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.38 ppb (4) 19.0 μg/m3 (17) 13.4 μg/m3 (53) 53.0
 
Jan. 16, 2020, 7 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A N/A N/A 21.0 μg/m3 (19) 15.1 μg/m3 (57) 57.0
 
Jan. 16, 2020, 6 a.m. N/A N/A N/A 26.0 ppb (24) N/A N/A N/A 0.53 ppb (6) 20.0 μg/m3 (18) 13.1 μg/m3 (52) 52.0
 
Jan. 16, 2020, 5 a.m. N/A N/A N/A 28.0 ppb (26) N/A N/A N/A 0.75 ppb (8) 20.0 μg/m3 (18) 13.3 μg/m3 (53) 53.0
 
Jan. 16, 2020, 4 a.m. N/A N/A N/A 28.0 ppb (26) N/A N/A N/A 0.83 ppb (9) 25.0 μg/m3 (23) 14.1 μg/m3 (54) 54.0
 
Jan. 16, 2020, 3 a.m. N/A N/A N/A 30.0 ppb (28) N/A N/A N/A 0.94 ppb (10) 23.0 μg/m3 (21) 13.6 μg/m3 (53) 53.0
 
Jan. 16, 2020, 2 a.m. N/A N/A N/A 28.0 ppb (26) N/A N/A N/A 1.08 ppb (12) 25.0 μg/m3 (23) 12.6 μg/m3 (51) 51.0
 
Jan. 16, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 1.16 ppb (13) 31.0 μg/m3 (28) 13.9 μg/m3 (54) 54.0
 
Jan. 16, 2020, midnight N/A N/A N/A 32.0 ppb (30) N/A N/A N/A 0.94 ppb (10) 25.0 μg/m3 (23) 11.2 μg/m3 (47) 47.0
 
Jan. 15, 2020, 11 p.m. N/A N/A N/A 25.0 ppb (23) N/A N/A N/A 0.4 ppb (4) 17.0 μg/m3 (15) 7.8 μg/m3 (32) 32.0
 
Jan. 15, 2020, 10 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.39 ppb (4) 14.0 μg/m3 (13) 7.2 μg/m3 (30) 30.0
 
Jan. 15, 2020, 9 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.24 ppb (3) 12.0 μg/m3 (11) 5.8 μg/m3 (24) 24.0
 
Jan. 15, 2020, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) 10.0 μg/m3 (9) 5.4 μg/m3 (23) 23.0
 
Jan. 15, 2020, 7 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.27 ppb (3) 11.0 μg/m3 (10) 5.6 μg/m3 (23) 23.0
 
Jan. 15, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) 11.0 μg/m3 (10) 5.3 μg/m3 (22) 22.0
 
Jan. 15, 2020, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) 10.0 μg/m3 (9) 5.1 μg/m3 (21) 21.0
 
Jan. 15, 2020, 4 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) 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2020, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.28 ppb (3) 9.0 μg/m3 (8) 5.3 μg/m3 (22) 22.0
 
Jan. 15, 2020, 2 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A N/A 14.0 μg/m3 (13) 8.5 μg/m3 (35) 35.0
 
Jan. 15, 2020, 1 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) 15.0 μg/m3 (14) 10.8 μg/m3 (45) 45.0
 
Jan. 15, 2020, 11 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.4 ppb (4) 14.0 μg/m3 (13) 10.2 μg/m3 (42) 42.0
 
Jan. 15, 2020, 10 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.23 ppb (3) 11.0 μg/m3 (10) 8.4 μg/m3 (35) 35.0
 
Jan. 15, 2020, 9 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.28 ppb (3) 15.0 μg/m3 (14) 11.1 μg/m3 (46) 46.0
 
Jan. 15, 2020, 8 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.25 ppb (3) 19.0 μg/m3 (17) 13.5 μg/m3 (53) 53.0
 
Jan. 15, 2020, 7 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A N/A 21.0 μg/m3 (19) 14.4 μg/m3 (55) 55.0
 
Jan. 15, 2020, 6 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.26 ppb (3) 25.0 μg/m3 (23) 16.5 μg/m3 (60) 60.0
 
Jan. 15, 2020, 5 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.28 ppb (3) 20.0 μg/m3 (18) 13.8 μg/m3 (54) 54.0
 
Jan. 15, 2020, 4 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) 18.0 μg/m3 (16) 11.6 μg/m3 (48) 48.0
 
Jan. 15, 2020, 3 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.35 ppb (4) 17.0 μg/m3 (15) 11.4 μg/m3 (48) 48.0
 
Jan. 15, 2020, 2 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.41 ppb (5) 17.0 μg/m3 (15) 11.3 μg/m3 (47) 47.0
 
Jan. 15, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 16.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
Jan. 15, 2020, midnight N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.45 ppb (5) 18.0 μg/m3 (16) 11.0 μg/m3 (46) 46.0
 
Jan. 14, 2020, 11 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) 15.0 μg/m3 (14) 10.3 μg/m3 (43) 43.0
 
Jan. 14, 2020, 10 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.55 ppb (6) 16.0 μg/m3 (15) 9.6 μg/m3 (40) 40.0
 
Jan. 14, 2020, 9 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) 16.0 μg/m3 (15) 8.9 μg/m3 (37) 37.0
 
Jan. 14, 2020, 8 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.54 ppb (6) 21.0 μg/m3 (19) 10.0 μg/m3 (42) 42.0
 
Jan. 14, 2020, 7 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A 0.6 ppb (7) N/A N/A 20.0
 
Jan. 14, 2020, 6 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.33 ppb (4) 17.0 μg/m3 (15) 11.1 μg/m3 (46) 46.0
 
Jan. 14, 2020, 5 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.34 ppb (4) 22.0 μg/m3 (20) 13.7 μg/m3 (54) 54.0
 
Jan. 14, 2020, 4 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.34 ppb (4) 19.0 μg/m3 (17) 12.9 μg/m3 (52) 52.0
 
Jan. 14, 2020, 3 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.51 ppb (6) 29.0 μg/m3 (26) 18.1 μg/m3 (63) 63.0
 
Jan. 14, 2020, 2 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.58 ppb (6) 33.0 μg/m3 (30) 19.9 μg/m3 (67) 67.0
 
Jan. 14, 2020, 1 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.74 ppb (8) 28.0 μg/m3 (25) 18.1 μg/m3 (63) 63.0
 
Jan. 14, 2020, noon N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.75 ppb (8) 26.0 μg/m3 (24) 16.6 μg/m3 (60) 60.0
 
Jan. 14, 2020, 11 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.55 ppb (6) 21.0 μg/m3 (19) 14.6 μg/m3 (56) 56.0
 
Jan. 14, 2020, 10 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.33 ppb (4) 20.0 μg/m3 (18) 14.8 μg/m3 (56) 56.0
 
Jan. 14, 2020, 9 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.3 ppb (3) 17.0 μg/m3 (15) 12.8 μg/m3 (52) 52.0
 
Jan. 14, 2020, 8 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.33 ppb (4) 22.0 μg/m3 (20) 15.6 μg/m3 (58) 58.0
 
Jan. 14, 2020, 7 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A N/A 17.0 μg/m3 (15) 12.3 μg/m3 (51) 51.0
 
Jan. 14, 2020, 6 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.2 ppb (2) 15.0 μg/m3 (14) 10.2 μg/m3 (42) 42.0
 
Jan. 14, 2020, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.21 ppb (2) 25.0 μg/m3 (23) 14.8 μg/m3 (56) 56.0
 
Jan. 14, 2020, 4 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.3 ppb (3) 32.0 μg/m3 (29) 18.7 μg/m3 (64) 64.0
 
Jan. 14, 2020, 3 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.33 ppb (4) 32.0 μg/m3 (29) 18.0 μg/m3 (63) 63.0
 
Jan. 14, 2020, 2 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.3 ppb (3) 28.0 μg/m3 (25) 16.2 μg/m3 (59) 59.0
 
Jan. 14, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) 32.0 μg/m3 (29) 17.4 μg/m3 (61) 61.0
 
Jan. 14, 2020, midnight N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.29 ppb (3) 44.0 μg/m3 (40) 20.3 μg/m3 (68) 68.0
 
Jan. 13, 2020, 11 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.28 ppb (3) 39.0 μg/m3 (35) 18.3 μg/m3 (63) 63.0
 
Jan. 13, 2020, 10 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.28 ppb (3) 33.0 μg/m3 (30) 15.9 μg/m3 (58) 58.0
 
Jan. 13, 2020, 9 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.3 ppb (3) 25.0 μg/m3 (23) 11.2 μg/m3 (47) 47.0
 
Jan. 13, 2020, 8 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.28 ppb (3) 19.0 μg/m3 (17) 9.2 μg/m3 (38) 38.0
 
Jan. 13, 2020, 7 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.25 ppb (3) 19.0 μg/m3 (17) 8.3 μg/m3 (35) 35.0
 
Jan. 13, 2020, 6 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.25 ppb (3) 17.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
Jan. 13, 2020, 5 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.25 ppb (3) 16.0 μg/m3 (15) 7.7 μg/m3 (32) 32.0
 
Jan. 13, 2020, 4 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.25 ppb (3) 15.0 μg/m3 (14) 7.5 μg/m3 (31) 31.0
 
Jan. 13, 2020, 3 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.25 ppb (3) 13.0 μg/m3 (12) 6.5 μg/m3 (27) 27.0
 
Jan. 13, 2020, 2 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.26 ppb (3) 11.0 μg/m3 (10) 6.2 μg/m3 (26) 26.0
 
Jan. 13, 2020, 1 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.32 ppb (4) 10.0 μg/m3 (9) 5.6 μg/m3 (23) 23.0
 
Jan. 13, 2020, noon N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.3 ppb (3) 8.0 μg/m3 (7) 5.2 μg/m3 (22) 22.0
 
Jan. 13, 2020, 11 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.25 ppb (3) 8.0 μg/m3 (7) 5.2 μg/m3 (22) 22.0
 
Jan. 13, 2020, 10 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.22 ppb (2) 8.0 μg/m3 (7) 5.3 μg/m3 (22) 22.0
 
Jan. 13, 2020, 9 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.18 ppb (2) 8.0 μg/m3 (7) 4.8 μg/m3 (20) 20.0
 
Jan. 13, 2020, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.18 ppb (2) 8.0 μg/m3 (7) 4.6 μg/m3 (19) 19.0
 
Jan. 13, 2020, 7 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A N/A 7.0 μg/m3 (6) 4.5 μg/m3 (19) 19.0
 
Jan. 13, 2020, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.15 ppb (2) 8.0 μg/m3 (7) 4.3 μg/m3 (18) 18.0
 
Jan. 13, 2020, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.17 ppb (2) 7.0 μg/m3 (6) 4.4 μg/m3 (18) 18.0
 
Jan. 13, 2020, 4 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.17 ppb (2) 7.0 μg/m3 (6) 4.4 μg/m3 (18) 18.0
 
Jan. 13, 2020, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Jan. 13, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) 5.0 μg/m3 (5) 3.6 μg/m3 (15) 15.0
 
Jan. 13, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) 5.0 μg/m3 (5) 2.7 μg/m3 (11) 11.0
 
Jan. 13, 2020, midnight 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) 2.3 μg/m3 (10) 10.0
 
Jan. 12, 2020, 11 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) 2.1 μg/m3 (9) 9.0
 
Jan. 12, 2020, 10 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) 1.5 μg/m3 (6) 6.0
 
Jan. 12, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 4.0
 
Jan. 12, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.25 ppb (3) 5.0 μg/m3 (5) 0.8 μg/m3 (3) 5.0
 
Jan. 12, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) 4.0 μg/m3 (4) 0.7 μg/m3 (3) 4.0
 
Jan. 12, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.26 ppb (3) 8.0 μg/m3 (7) 1.1 μg/m3 (5) 7.0
 
Jan. 12, 2020, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) 8.0 μg/m3 (7) 1.4 μg/m3 (6) 7.0
 
Jan. 12, 2020, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 8.0
 
Jan. 12, 2020, 3 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.27 ppb (3) 9.0 μg/m3 (8) 3.1 μg/m3 (13) 13.0
 
Jan. 12, 2020, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) 14.0 μg/m3 (13) 5.8 μg/m3 (24) 24.0
 
Jan. 12, 2020, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (2) 17.0 μg/m3 (15) 6.8 μg/m3 (28) 28.0
 
Jan. 12, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) 16.0 μg/m3 (15) 7.6 μg/m3 (32) 32.0
 
Jan. 12, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) 18.0 μg/m3 (16) 8.5 μg/m3 (35) 35.0
 
Jan. 12, 2020, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) 23.0 μg/m3 (21) 10.1 μg/m3 (42) 42.0
 
Jan. 12, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) 13.0 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
Jan. 12, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) 11.0 μg/m3 (10) 4.7 μg/m3 (20) 20.0
 
Jan. 12, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A N/A 24.0 μg/m3 (22) 11.3 μg/m3 (47) 47.0
 
Jan. 12, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) 29.0 μg/m3 (26) 13.1 μg/m3 (52) 52.0
 
Jan. 12, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.22 ppb (2) 27.0 μg/m3 (25) 12.3 μg/m3 (51) 51.0
 
Jan. 12, 2020, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) 26.0 μg/m3 (24) 11.7 μg/m3 (49) 49.0
 
Jan. 12, 2020, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
Jan. 12, 2020, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) 23.0 μg/m3 (21) 10.5 μg/m3 (44) 44.0
 
Jan. 12, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.25 ppb (3) 23.0 μg/m3 (21) 10.1 μg/m3 (42) 42.0
 
Jan. 12, 2020, midnight N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.27 ppb (3) 22.0 μg/m3 (20) 9.7 μg/m3 (40) 40.0
 
Jan. 11, 2020, 11 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.28 ppb (3) 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
Jan. 11, 2020, 10 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) 21.0 μg/m3 (19) 9.0 μg/m3 (38) 38.0
 
Jan. 11, 2020, 9 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.32 ppb (4) 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
Jan. 11, 2020, 8 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.36 ppb (4) 24.0 μg/m3 (22) 8.4 μg/m3 (35) 35.0
 
Jan. 11, 2020, 7 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.35 ppb (4) 24.0 μg/m3 (22) 7.9 μg/m3 (33) 33.0
 
Jan. 11, 2020, 6 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.32 ppb (4) 26.0 μg/m3 (24) 8.0 μg/m3 (33) 33.0
 
Jan. 11, 2020, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.29 ppb (3) 25.0 μg/m3 (23) 8.0 μg/m3 (33) 33.0
 
Jan. 11, 2020, 4 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.29 ppb (3) 26.0 μg/m3 (24) 8.1 μg/m3 (34) 34.0
 
Jan. 11, 2020, 3 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.31 ppb (3) 24.0 μg/m3 (22) 8.0 μg/m3 (33) 33.0
 
Jan. 11, 2020, 2 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.29 ppb (3) 19.0 μg/m3 (17) 7.9 μg/m3 (33) 33.0
 
Jan. 11, 2020, 1 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) 18.0 μg/m3 (16) 8.0 μg/m3 (33) 33.0
 
Jan. 11, 2020, noon N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.25 ppb (3) 19.0 μg/m3 (17) 8.6 μg/m3 (36) 36.0
 
Jan. 11, 2020, 11 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.26 ppb (3) 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Jan. 11, 2020, 10 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.22 ppb (2) 21.0 μg/m3 (19) 10.0 μg/m3 (42) 42.0
 
Jan. 11, 2020, 9 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.33 ppb (4) 20.0 μg/m3 (18) 10.4 μg/m3 (43) 43.0
 
Jan. 11, 2020, 8 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.34 ppb (4) 21.0 μg/m3 (19) 10.9 μg/m3 (45) 45.0
 
Jan. 11, 2020, 7 a.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A N/A 22.0 μg/m3 (20) 11.4 μg/m3 (48) 48.0
 
Jan. 11, 2020, 6 a.m. N/A N/A N/A 26.0 ppb (24) N/A N/A N/A 0.43 ppb (5) 21.0 μg/m3 (19) 11.4 μg/m3 (48) 48.0
 
Jan. 11, 2020, 5 a.m. N/A N/A N/A 29.0 ppb (27) N/A N/A N/A 0.54 ppb (6) 22.0 μg/m3 (20) 11.9 μg/m3 (50) 50.0
 
Jan. 11, 2020, 4 a.m. N/A N/A N/A 30.0 ppb (28) N/A N/A N/A 0.6 ppb (7) 22.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
Jan. 11, 2020, 3 a.m. N/A N/A N/A 29.0 ppb (27) N/A N/A N/A 0.52 ppb (6) 21.0 μg/m3 (19) 11.3 μg/m3 (47) 47.0
 
Jan. 11, 2020, 2 a.m. N/A N/A N/A 36.0 ppb (33) N/A N/A N/A 0.57 ppb (6) 22.0 μg/m3 (20) 11.4 μg/m3 (48) 48.0
 
Jan. 11, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.53 ppb (6) 24.0 μg/m3 (22) 11.6 μg/m3 (48) 48.0
 
Jan. 11, 2020, midnight N/A N/A N/A 30.0 ppb (28) N/A N/A N/A 0.6 ppb (7) 25.0 μg/m3 (23) 10.2 μg/m3 (42) 42.0
 
Jan. 10, 2020, 11 p.m. N/A N/A N/A 25.0 ppb (23) N/A N/A N/A 0.51 ppb (6) 23.0 μg/m3 (21) 8.3 μg/m3 (35) 35.0
 
Jan. 10, 2020, 10 p.m. N/A N/A N/A 29.0 ppb (27) N/A N/A N/A 0.6 ppb (7) 18.0 μg/m3 (16) 7.4 μg/m3 (31) 31.0
 
Jan. 10, 2020, 9 p.m. N/A N/A N/A 35.0 ppb (32) N/A N/A N/A 0.7 ppb (8) 19.0 μg/m3 (17) 7.9 μg/m3 (33) 33.0
 
Jan. 10, 2020, 8 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A N/A 0.64 ppb (7) 27.0 μg/m3 (25) 8.4 μg/m3 (35) 35.0
 
Jan. 10, 2020, 7 p.m. N/A N/A N/A 30.0 ppb (28) N/A N/A N/A 0.56 ppb (6) 29.0 μg/m3 (26) 8.3 μg/m3 (35) 35.0
 
Jan. 10, 2020, 6 p.m. N/A N/A N/A 28.0 ppb (26) N/A N/A N/A 0.5 ppb (6) 30.0 μg/m3 (27) 8.9 μg/m3 (37) 37.0
 
Jan. 10, 2020, 5 p.m. N/A N/A N/A 31.0 ppb (29) N/A N/A N/A 0.57 ppb (6) 30.0 μg/m3 (27) 9.7 μg/m3 (40) 40.0
 
Jan. 10, 2020, 4 p.m. N/A N/A N/A 28.0 ppb (26) N/A N/A N/A 0.51 ppb (6) 28.0 μg/m3 (25) 9.4 μg/m3 (39) 39.0
 
Jan. 10, 2020, 3 p.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.45 ppb (5) 24.0 μg/m3 (22) 8.8 μg/m3 (37) 37.0
 
Jan. 10, 2020, 2 p.m. N/A N/A N/A 26.0 ppb (24) N/A N/A N/A 0.51 ppb (6) 26.0 μg/m3 (24) 10.7 μg/m3 (45) 45.0
 
Jan. 10, 2020, 1 p.m. N/A N/A N/A 27.0 ppb (25) N/A N/A N/A 0.6 ppb (7) 23.0 μg/m3 (21) 12.3 μg/m3 (51) 51.0
 
Jan. 10, 2020, noon N/A N/A N/A 27.0 ppb (25) N/A N/A N/A 0.58 ppb (6) 19.0 μg/m3 (17) 12.1 μg/m3 (50) 50.0
 
Jan. 10, 2020, 11 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A N/A 0.46 ppb (5) 16.0 μg/m3 (15) 9.9 μg/m3 (41) 41.0
 
Jan. 10, 2020, 10 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.33 ppb (4) 12.0 μg/m3 (11) 7.6 μg/m3 (32) 32.0
 
Jan. 10, 2020, 9 a.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A 0.28 ppb (3) 15.0 μg/m3 (14) 7.4 μg/m3 (31) 31.0
 
Jan. 10, 2020, 8 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A N/A 0.29 ppb (3) 15.0 μg/m3 (14) 8.4 μg/m3 (35) 35.0
 
Jan. 10, 2020, 7 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A N/A 14.0 μg/m3 (13) 8.4 μg/m3 (35) 35.0
 
Jan. 10, 2020, 6 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.31 ppb (3) 16.0 μg/m3 (15) 9.4 μg/m3 (39) 39.0