ID: 2233

AQSQID: 090030025

Site Name: Hartford-Huntley

Added: April 21, 2020, 6:24 p.m.

Updated: Jan. 20, 2021, 8:31 a.m.

Location: Hartford (Downtown), CT

Reporting: True, Located: True

Current AQI: 47.0

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. 20, 2021, 7 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A N/A 15.6 μg/m3 (15) 11.2 μg/m3 (47) 47.0
 
Jan. 20, 2021, 6 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.38 ppb (5) 15.1 μg/m3 (14) 11.5 μg/m3 (48) 48.0
 
Jan. 20, 2021, 5 a.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.29 ppb (4) 14.0 μg/m3 (13) 10.5 μg/m3 (44) 44.0
 
Jan. 20, 2021, 4 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.4 ppb (5) 13.8 μg/m3 (13) 9.8 μg/m3 (41) 41.0
 
Jan. 20, 2021, 3 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.46 ppb (6) 14.6 μg/m3 (14) 9.7 μg/m3 (41) 41.0
 
Jan. 20, 2021, 2 a.m. N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 0.48 ppb (6) 15.1 μg/m3 (14) 9.3 μg/m3 (39) 39.0
 
Jan. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) 13.7 μg/m3 (13) 8.2 μg/m3 (35) 35.0
 
Jan. 20, 2021, midnight N/A N/A N/A 27.0 ppb (26) N/A N/A N/A 0.52 ppb (6) 12.8 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
Jan. 19, 2021, 11 p.m. N/A N/A N/A 29.0 ppb (28) N/A N/A N/A 0.6 ppb (7) 14.9 μg/m3 (14) 7.1 μg/m3 (30) 30.0
 
Jan. 19, 2021, 10 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.35 ppb (4) 9.4 μg/m3 (9) 4.9 μg/m3 (21) 21.0
 
Jan. 19, 2021, 9 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.31 ppb (4) 8.9 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2021, 8 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.28 ppb (4) 9.3 μg/m3 (9) 5.1 μg/m3 (22) 22.0
 
Jan. 19, 2021, 7 p.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.34 ppb (4) 11.8 μg/m3 (11) 5.3 μg/m3 (23) 23.0
 
Jan. 19, 2021, 6 p.m. N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 0.41 ppb (5) 11.3 μg/m3 (11) 5.3 μg/m3 (23) 23.0
 
Jan. 19, 2021, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (3) 6.3 μg/m3 (6) 4.2 μg/m3 (18) 18.0
 
Jan. 19, 2021, 4 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.38 ppb (5) 15.5 μg/m3 (15) 7.2 μg/m3 (31) 31.0
 
Jan. 19, 2021, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.48 ppb (6) 15.8 μg/m3 (15) 7.8 μg/m3 (33) 33.0
 
Jan. 19, 2021, 2 p.m. N/A N/A N/A 24.0 ppb (23) N/A N/A N/A 0.57 ppb (7) 18.0 μg/m3 (17) 7.8 μg/m3 (33) 33.0
 
Jan. 19, 2021, 1 p.m. N/A N/A N/A 30.0 ppb (29) N/A N/A N/A 0.62 ppb (7) 16.3 μg/m3 (16) 6.8 μg/m3 (29) 29.0
 
Jan. 19, 2021, noon N/A N/A N/A 33.0 ppb (32) N/A N/A N/A 0.67 ppb (8) 13.8 μg/m3 (13) 6.7 μg/m3 (28) 32.0
 
Jan. 19, 2021, 11 a.m. N/A N/A N/A 32.0 ppb (31) N/A N/A N/A 0.54 ppb (6) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 31.0
 
Jan. 19, 2021, 10 a.m. N/A N/A N/A 30.0 ppb (29) N/A N/A N/A 0.46 ppb (6) 10.3 μg/m3 (10) 5.3 μg/m3 (23) 29.0
 
Jan. 19, 2021, 9 a.m. N/A N/A N/A 21.0 ppb (20) N/A N/A N/A 0.29 ppb (4) 8.8 μg/m3 (9) 4.6 μg/m3 (20) 20.0
 
Jan. 19, 2021, 8 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.25 ppb (3) 7.5 μg/m3 (7) 4.2 μg/m3 (18) 18.0
 
Jan. 19, 2021, 7 a.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A N/A 6.8 μg/m3 (7) 3.8 μg/m3 (16) 17.0
 
Jan. 19, 2021, 6 a.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.26 ppb (4) 4.8 μg/m3 (5) 3.3 μg/m3 (14) 14.0
 
Jan. 19, 2021, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (3) 4.2 μg/m3 (4) 2.8 μg/m3 (12) 12.0
 
Jan. 19, 2021, 4 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (3) 5.5 μg/m3 (6) 3.1 μg/m3 (13) 13.0
 
Jan. 19, 2021, 3 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.19 ppb (3) 4.8 μg/m3 (5) 2.8 μg/m3 (12) 12.0
 
Jan. 19, 2021, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (3) 3.8 μg/m3 (4) 2.6 μg/m3 (11) 11.0
 
Jan. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (3) 4.2 μg/m3 (4) 2.7 μg/m3 (12) 12.0
 
Jan. 19, 2021, midnight N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.21 ppb (3) 5.8 μg/m3 (6) 3.6 μg/m3 (16) 16.0
 
Jan. 18, 2021, 11 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.23 ppb (3) 7.9 μg/m3 (8) 4.3 μg/m3 (18) 18.0
 
Jan. 18, 2021, 10 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.23 ppb (3) 5.8 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2021, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (3) 5.2 μg/m3 (5) 3.5 μg/m3 (15) 15.0
 
Jan. 18, 2021, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) 7.6 μg/m3 (8) 3.4 μg/m3 (15) 15.0
 
Jan. 18, 2021, 7 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.33 ppb (4) 9.7 μg/m3 (9) 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2021, 6 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.33 ppb (4) 11.3 μg/m3 (11) 4.5 μg/m3 (19) 19.0
 
Jan. 18, 2021, 5 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.33 ppb (4) 9.9 μg/m3 (10) 4.5 μg/m3 (19) 19.0
 
Jan. 18, 2021, 4 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.33 ppb (4) 9.7 μg/m3 (9) 4.9 μg/m3 (21) 21.0
 
Jan. 18, 2021, 3 p.m. N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 0.4 ppb (5) 14.7 μg/m3 (14) 6.8 μg/m3 (29) 29.0
 
Jan. 18, 2021, 2 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.41 ppb (5) 15.1 μg/m3 (14) 7.6 μg/m3 (32) 32.0
 
Jan. 18, 2021, 1 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.47 ppb (6) 16.5 μg/m3 (16) 8.4 μg/m3 (36) 36.0
 
Jan. 18, 2021, noon N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.47 ppb (6) 15.0 μg/m3 (14) 8.2 μg/m3 (35) 35.0
 
Jan. 18, 2021, 11 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.39 ppb (5) 12.5 μg/m3 (12) 7.5 μg/m3 (32) 32.0
 
Jan. 18, 2021, 10 a.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.33 ppb (4) 11.4 μg/m3 (11) 7.2 μg/m3 (31) 31.0
 
Jan. 18, 2021, 9 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.3 ppb (4) 10.6 μg/m3 (10) 6.7 μg/m3 (28) 28.0
 
Jan. 18, 2021, 8 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.26 ppb (4) 9.4 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2021, 7 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A N/A 8.7 μg/m3 (9) 5.8 μg/m3 (25) 25.0
 
Jan. 18, 2021, 6 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.28 ppb (4) 8.8 μg/m3 (9) 5.8 μg/m3 (25) 25.0
 
Jan. 18, 2021, 5 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.31 ppb (4) 8.5 μg/m3 (8) 5.8 μg/m3 (25) 25.0
 
Jan. 18, 2021, 4 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.33 ppb (4) 9.0 μg/m3 (9) 6.1 μg/m3 (26) 26.0
 
Jan. 18, 2021, 3 a.m. N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 0.38 ppb (5) 10.4 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2021, 2 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.4 ppb (5) 11.3 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.42 ppb (5) 10.8 μg/m3 (10) 6.5 μg/m3 (28) 28.0
 
Jan. 18, 2021, midnight N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.47 ppb (6) 12.4 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
Jan. 17, 2021, 11 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.49 ppb (6) 11.9 μg/m3 (12) 6.3 μg/m3 (27) 27.0
 
Jan. 17, 2021, 10 p.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.54 ppb (6) 11.0 μg/m3 (11) 5.7 μg/m3 (24) 24.0
 
Jan. 17, 2021, 9 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.32 ppb (4) 8.1 μg/m3 (8) 4.6 μg/m3 (20) 20.0
 
Jan. 17, 2021, 8 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.29 ppb (4) 8.9 μg/m3 (9) 4.7 μg/m3 (20) 20.0
 
Jan. 17, 2021, 7 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.31 ppb (4) 8.2 μg/m3 (8) 4.5 μg/m3 (19) 19.0
 
Jan. 17, 2021, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.27 ppb (4) 9.2 μg/m3 (9) 4.9 μg/m3 (21) 21.0
 
Jan. 17, 2021, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (4) 10.0 μg/m3 (10) 5.1 μg/m3 (22) 22.0
 
Jan. 17, 2021, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (4) 11.4 μg/m3 (11) 5.3 μg/m3 (23) 23.0
 
Jan. 17, 2021, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (4) 10.1 μg/m3 (10) 5.3 μg/m3 (23) 23.0
 
Jan. 17, 2021, 2 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.25 ppb (3) 11.1 μg/m3 (11) 5.5 μg/m3 (23) 23.0
 
Jan. 17, 2021, 1 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.33 ppb (4) 11.6 μg/m3 (11) 6.1 μg/m3 (26) 26.0
 
Jan. 17, 2021, noon N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.29 ppb (4) 13.4 μg/m3 (13) 6.3 μg/m3 (27) 27.0
 
Jan. 17, 2021, 11 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.18 ppb (3) 12.7 μg/m3 (12) 6.4 μg/m3 (27) 27.0
 
Jan. 17, 2021, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.18 ppb (3) 12.0 μg/m3 (12) 6.4 μg/m3 (27) 27.0
 
Jan. 17, 2021, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (3) 12.7 μg/m3 (12) 7.2 μg/m3 (31) 31.0
 
Jan. 17, 2021, 8 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.22 ppb (3) 12.3 μg/m3 (12) 7.5 μg/m3 (32) 32.0
 
Jan. 17, 2021, 7 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A N/A 12.5 μg/m3 (12) 8.1 μg/m3 (34) 34.0
 
Jan. 17, 2021, 6 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.23 ppb (3) 13.9 μg/m3 (13) 8.8 μg/m3 (37) 37.0
 
Jan. 17, 2021, 5 a.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.32 ppb (4) 13.5 μg/m3 (13) 8.8 μg/m3 (37) 37.0
 
Jan. 17, 2021, 4 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.31 ppb (4) 11.7 μg/m3 (11) 7.4 μg/m3 (31) 31.0
 
Jan. 17, 2021, 3 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.36 ppb (5) 9.5 μg/m3 (9) 6.1 μg/m3 (26) 26.0
 
Jan. 17, 2021, 2 a.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.37 ppb (5) 7.8 μg/m3 (8) 4.5 μg/m3 (19) 19.0
 
Jan. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (3) 5.1 μg/m3 (5) 3.7 μg/m3 (16) 16.0
 
Jan. 17, 2021, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) 5.6 μg/m3 (6) 3.6 μg/m3 (16) 16.0
 
Jan. 16, 2021, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) 7.2 μg/m3 (7) 3.7 μg/m3 (16) 16.0
 
Jan. 16, 2021, 10 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.27 ppb (4) 5.4 μg/m3 (5) 2.7 μg/m3 (12) 12.0
 
Jan. 16, 2021, 9 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.27 ppb (4) 4.6 μg/m3 (5) 2.4 μg/m3 (10) 10.0
 
Jan. 16, 2021, 8 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.52 ppb (6) 8.9 μg/m3 (9) 3.5 μg/m3 (15) 16.0
 
Jan. 16, 2021, 7 p.m. N/A N/A N/A 14.0 ppb (14) N/A N/A N/A 0.52 ppb (6) 5.5 μg/m3 (6) 2.2 μg/m3 (10) 14.0
 
Jan. 16, 2021, 6 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.56 ppb (7) 7.6 μg/m3 (8) 3.7 μg/m3 (16) 17.0
 
Jan. 16, 2021, 5 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.41 ppb (5) 12.6 μg/m3 (12) 5.2 μg/m3 (22) 22.0
 
Jan. 16, 2021, 4 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.41 ppb (5) 14.9 μg/m3 (14) 6.6 μg/m3 (28) 28.0
 
Jan. 16, 2021, 3 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.24 ppb (3) 2.9 μg/m3 (3) 1.8 μg/m3 (8) 8.0
 
Jan. 16, 2021, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (3) 2.5 μg/m3 (3) 1.7 μg/m3 (8) 8.0
 
Jan. 16, 2021, 1 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.22 ppb (3) 3.7 μg/m3 (4) 2.7 μg/m3 (12) 12.0
 
Jan. 16, 2021, noon N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (3) 4.5 μg/m3 (5) 3.2 μg/m3 (14) 14.0
 
Jan. 16, 2021, 11 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (3) 5.6 μg/m3 (6) 3.8 μg/m3 (16) 16.0
 
Jan. 16, 2021, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (3) 6.3 μg/m3 (6) 4.2 μg/m3 (18) 18.0
 
Jan. 16, 2021, 9 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (3) 7.7 μg/m3 (8) 4.8 μg/m3 (20) 20.0
 
Jan. 16, 2021, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (3) 8.5 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2021, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A N/A 8.7 μg/m3 (9) 5.1 μg/m3 (22) 22.0
 
Jan. 16, 2021, 6 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.2 ppb (3) 9.3 μg/m3 (9) 5.1 μg/m3 (22) 22.0
 
Jan. 16, 2021, 5 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.19 ppb (3) 9.1 μg/m3 (9) 4.6 μg/m3 (20) 20.0
 
Jan. 16, 2021, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (3) 9.6 μg/m3 (9) 4.5 μg/m3 (19) 19.0
 
Jan. 16, 2021, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (3) 9.9 μg/m3 (10) 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2021, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) 11.1 μg/m3 (11) 5.5 μg/m3 (23) 23.0
 
Jan. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.26 ppb (4) 13.2 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2021, midnight N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.33 ppb (4) 17.4 μg/m3 (17) 8.8 μg/m3 (37) 37.0
 
Jan. 15, 2021, 11 p.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.36 ppb (5) 19.7 μg/m3 (19) 10.6 μg/m3 (45) 45.0
 
Jan. 15, 2021, 10 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.39 ppb (5) 25.0 μg/m3 (24) 13.3 μg/m3 (54) 54.0
 
Jan. 15, 2021, 9 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.45 ppb (6) 30.3 μg/m3 (29) 15.5 μg/m3 (59) 59.0
 
Jan. 15, 2021, 8 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.39 ppb (5) 29.6 μg/m3 (28) 16.0 μg/m3 (60) 60.0
 
Jan. 15, 2021, 7 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.33 ppb (4) 28.7 μg/m3 (27) 15.8 μg/m3 (59) 59.0
 
Jan. 15, 2021, 6 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.38 ppb (5) 34.6 μg/m3 (33) 18.7 μg/m3 (65) 65.0
 
Jan. 15, 2021, 5 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.37 ppb (5) 31.8 μg/m3 (30) 21.8 μg/m3 (72) 72.0
 
Jan. 15, 2021, 4 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.33 ppb (4) 31.0 μg/m3 (29) 21.2 μg/m3 (71) 71.0
 
Jan. 15, 2021, 3 p.m. N/A N/A N/A 14.0 ppb (14) N/A N/A N/A 0.34 ppb (4) 29.0 μg/m3 (27) 21.2 μg/m3 (71) 71.0
 
Jan. 15, 2021, 2 p.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.4 ppb (5) 30.3 μg/m3 (29) 21.9 μg/m3 (72) 72.0
 
Jan. 15, 2021, 1 p.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.42 ppb (5) 29.5 μg/m3 (28) 21.4 μg/m3 (71) 71.0
 
Jan. 15, 2021, noon N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.37 ppb (5) 29.9 μg/m3 (28) 21.8 μg/m3 (72) 72.0
 
Jan. 15, 2021, 11 a.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.35 ppb (4) 30.7 μg/m3 (29) 22.0 μg/m3 (72) 72.0
 
Jan. 15, 2021, 10 a.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.4 ppb (5) 41.6 μg/m3 (39) 29.4 μg/m3 (88) 88.0
 
Jan. 15, 2021, 9 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.33 ppb (4) 47.9 μg/m3 (45) 34.7 μg/m3 (99) 99.0
 
Jan. 15, 2021, 8 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.37 ppb (5) 45.1 μg/m3 (42) 33.3 μg/m3 (96) 96.0
 
Jan. 15, 2021, 7 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A N/A 44.1 μg/m3 (41) 32.9 μg/m3 (95) 95.0
 
Jan. 15, 2021, 6 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.4 ppb (5) 44.2 μg/m3 (41) 32.9 μg/m3 (95) 95.0
 
Jan. 15, 2021, 5 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.37 ppb (5) 43.9 μg/m3 (41) 33.1 μg/m3 (96) 96.0
 
Jan. 15, 2021, 4 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.32 ppb (4) 42.0 μg/m3 (39) 31.6 μg/m3 (93) 93.0
 
Jan. 15, 2021, 3 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.19 ppb (3) 42.6 μg/m3 (40) 31.9 μg/m3 (93) 93.0
 
Jan. 15, 2021, 2 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.3 ppb (4) 42.2 μg/m3 (40) 31.3 μg/m3 (92) 92.0
 
Jan. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (5) 40.6 μg/m3 (38) 30.1 μg/m3 (89) 89.0
 
Jan. 15, 2021, midnight N/A N/A N/A 22.0 ppb (21) N/A N/A N/A 0.43 ppb (5) 40.4 μg/m3 (38) 29.8 μg/m3 (89) 89.0
 
Jan. 14, 2021, 11 p.m. N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 0.45 ppb (6) 44.1 μg/m3 (41) 32.5 μg/m3 (94) 94.0
 
Jan. 14, 2021, 10 p.m. N/A N/A N/A 26.0 ppb (25) N/A N/A N/A 0.43 ppb (5) 43.3 μg/m3 (41) 32.0 μg/m3 (93) 93.0
 
Jan. 14, 2021, 9 p.m. N/A N/A N/A 24.0 ppb (23) N/A N/A N/A 0.41 ppb (5) 43.4 μg/m3 (41) 31.6 μg/m3 (93) 93.0
 
Jan. 14, 2021, 8 p.m. N/A N/A N/A 23.0 ppb (22) N/A N/A N/A 0.42 ppb (5) 46.9 μg/m3 (44) 32.5 μg/m3 (94) 94.0
 
Jan. 14, 2021, 7 p.m. N/A N/A N/A 24.0 ppb (23) N/A N/A N/A 0.47 ppb (6) 48.4 μg/m3 (45) 33.8 μg/m3 (97) 97.0
 
Jan. 14, 2021, 6 p.m. N/A N/A N/A 21.0 ppb (20) N/A N/A N/A 0.42 ppb (5) 45.3 μg/m3 (42) 31.7 μg/m3 (93) 93.0
 
Jan. 14, 2021, 5 p.m. N/A N/A N/A 23.0 ppb (22) N/A N/A N/A 0.45 ppb (6) 49.8 μg/m3 (47) 33.6 μg/m3 (97) 97.0
 
Jan. 14, 2021, 4 p.m. N/A N/A N/A 24.0 ppb (23) N/A N/A N/A 0.47 ppb (6) 50.5 μg/m3 (47) 33.7 μg/m3 (97) 97.0
 
Jan. 14, 2021, 3 p.m. N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 0.6 ppb (7) 50.2 μg/m3 (47) 33.5 μg/m3 (97) 97.0
 
Jan. 14, 2021, 2 p.m. N/A N/A N/A 26.0 ppb (25) N/A N/A N/A 0.56 ppb (7) 45.1 μg/m3 (42) 30.0 μg/m3 (89) 89.0
 
Jan. 14, 2021, 1 p.m. N/A N/A N/A 28.0 ppb (27) N/A N/A N/A 0.85 ppb (10) 45.3 μg/m3 (42) 29.1 μg/m3 (87) 87.0
 
Jan. 14, 2021, noon N/A N/A N/A 29.0 ppb (28) N/A N/A N/A 0.83 ppb (10) 47.5 μg/m3 (44) 29.0 μg/m3 (87) 87.0
 
Jan. 14, 2021, 11 a.m. N/A N/A N/A 28.0 ppb (27) N/A N/A N/A 0.61 ppb (7) 43.9 μg/m3 (41) 29.7 μg/m3 (89) 89.0
 
Jan. 14, 2021, 10 a.m. N/A N/A N/A 28.0 ppb (27) N/A N/A N/A 0.45 ppb (6) 41.9 μg/m3 (39) 28.7 μg/m3 (86) 86.0
 
Jan. 14, 2021, 9 a.m. N/A N/A N/A 26.0 ppb (25) N/A N/A N/A 0.4 ppb (5) 42.3 μg/m3 (40) 28.1 μg/m3 (85) 85.0
 
Jan. 14, 2021, 8 a.m. N/A N/A N/A 24.0 ppb (23) N/A N/A N/A 0.38 ppb (5) 42.1 μg/m3 (39) 28.2 μg/m3 (85) 85.0
 
Jan. 14, 2021, 7 a.m. N/A N/A N/A 21.0 ppb (20) N/A N/A N/A N/A 40.1 μg/m3 (38) 26.4 μg/m3 (82) 82.0
 
Jan. 14, 2021, 6 a.m. N/A N/A N/A 23.0 ppb (22) N/A N/A N/A 0.37 ppb (5) 40.6 μg/m3 (38) 27.1 μg/m3 (83) 83.0
 
Jan. 14, 2021, 5 a.m. N/A N/A N/A 27.0 ppb (26) N/A N/A N/A 0.43 ppb (5) 39.2 μg/m3 (37) 26.9 μg/m3 (83) 83.0
 
Jan. 14, 2021, 4 a.m. N/A N/A N/A 28.0 ppb (27) N/A N/A N/A 0.46 ppb (6) 39.5 μg/m3 (37) 26.9 μg/m3 (83) 83.0
 
Jan. 14, 2021, 3 a.m. N/A N/A N/A 29.0 ppb (28) N/A N/A N/A 0.54 ppb (6) 40.3 μg/m3 (38) 25.7 μg/m3 (80) 80.0
 
Jan. 14, 2021, 2 a.m. N/A N/A N/A 30.0 ppb (29) N/A N/A N/A 0.61 ppb (7) 41.4 μg/m3 (39) 26.9 μg/m3 (83) 83.0
 
Jan. 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.63 ppb (7) 41.4 μg/m3 (39) 26.8 μg/m3 (82) 82.0
 
Jan. 14, 2021, midnight N/A N/A N/A 30.0 ppb (29) N/A N/A N/A 0.69 ppb (8) 39.3 μg/m3 (37) 24.9 μg/m3 (78) 78.0
 
Jan. 13, 2021, 11 p.m. N/A N/A N/A 28.0 ppb (27) N/A N/A N/A 0.59 ppb (7) 37.1 μg/m3 (35) 23.0 μg/m3 (74) 74.0
 
Jan. 13, 2021, 10 p.m. N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 0.58 ppb (7) 35.0 μg/m3 (33) 21.5 μg/m3 (71) 71.0
 
Jan. 13, 2021, 9 p.m. N/A N/A N/A 24.0 ppb (23) N/A N/A N/A 0.62 ppb (7) 34.6 μg/m3 (33) 19.9 μg/m3 (68) 68.0
 
Jan. 13, 2021, 8 p.m. N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 0.62 ppb (7) 32.3 μg/m3 (30) 18.5 μg/m3 (65) 65.0
 
Jan. 13, 2021, 7 p.m. N/A N/A N/A 22.0 ppb (21) N/A N/A N/A 0.51 ppb (6) 33.6 μg/m3 (32) 18.2 μg/m3 (64) 64.0
 
Jan. 13, 2021, 6 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.44 ppb (5) 33.5 μg/m3 (32) 18.5 μg/m3 (65) 65.0
 
Jan. 13, 2021, 5 p.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.45 ppb (6) 32.4 μg/m3 (30) 17.2 μg/m3 (62) 62.0
 
Jan. 13, 2021, 4 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.48 ppb (6) 33.9 μg/m3 (32) 16.3 μg/m3 (60) 60.0
 
Jan. 13, 2021, 3 p.m. N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 0.57 ppb (7) 40.2 μg/m3 (38) 18.5 μg/m3 (65) 65.0
 
Jan. 13, 2021, 2 p.m. N/A N/A N/A 32.0 ppb (31) N/A N/A N/A 0.94 ppb (11) 56.9 μg/m3 (52) 23.5 μg/m3 (75) 75.0
 
Jan. 13, 2021, 1 p.m. N/A N/A N/A 31.0 ppb (30) N/A N/A N/A 1.02 ppb (12) 34.9 μg/m3 (33) 18.4 μg/m3 (65) 65.0
 
Jan. 13, 2021, noon N/A N/A N/A 32.0 ppb (31) N/A N/A N/A 1.01 ppb (12) 30.7 μg/m3 (29) 17.4 μg/m3 (63) 63.0
 
Jan. 13, 2021, 11 a.m. N/A N/A N/A 30.0 ppb (29) N/A N/A N/A 0.83 ppb (10) 25.2 μg/m3 (24) 15.5 μg/m3 (59) 59.0
 
Jan. 13, 2021, 10 a.m. N/A N/A N/A 29.0 ppb (28) N/A N/A N/A 0.69 ppb (8) 20.5 μg/m3 (19) 14.2 μg/m3 (56) 56.0
 
Jan. 13, 2021, 9 a.m. N/A N/A N/A 29.0 ppb (28) N/A N/A N/A 0.47 ppb (6) 20.9 μg/m3 (20) 13.8 μg/m3 (55) 55.0
 
Jan. 13, 2021, 8 a.m. N/A N/A N/A 29.0 ppb (28) N/A N/A N/A 0.35 ppb (4) 19.4 μg/m3 (18) 12.4 μg/m3 (52) 52.0