AQSQID: 090050005

Site Name: Cornwall

Location: W Cornwall (E Cornwall), CT

Reporting: True, Located: True

Current AQI: 19.0

W Cornwall (E Cornwall) CT, US: 41.833099, -73.303299

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 27, 2020, 2 p.m. N/A 0.3 ppb (0) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.19 ppb (2) 6.0 μg/m3 (5) 4.6 μg/m3 (19) 19.0
 
Jan. 27, 2020, 1 p.m. N/A 0.1 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.18 ppb (2) 6.0 μg/m3 (5) 4.8 μg/m3 (20) 20.0
 
Jan. 27, 2020, noon N/A 0.0 ppb (0) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.18 ppb (2) 6.0 μg/m3 (5) 4.6 μg/m3 (19) 19.0
 
Jan. 27, 2020, 11 a.m. N/A 0.0 ppb (0) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.19 ppb (2) 6.0 μg/m3 (5) 4.8 μg/m3 (20) 20.0
 
Jan. 27, 2020, 10 a.m. N/A 0.0 ppb (0) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.19 ppb (2) 8.0 μg/m3 (7) 5.5 μg/m3 (23) 23.0
 
Jan. 27, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.19 ppb (2) 6.0 μg/m3 (5) 4.6 μg/m3 (19) 19.0
 
Jan. 27, 2020, 8 a.m. N/A 0.0 ppb (0) 2.2 ppb (2) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.18 ppb (2) 6.0 μg/m3 (5) 4.5 μg/m3 (19) 19.0
 
Jan. 27, 2020, 7 a.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 24.0 ppb (18) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 18.0
 
Jan. 27, 2020, 6 a.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.19 ppb (2) 5.0 μg/m3 (5) 3.9 μg/m3 (16) 18.0
 
Jan. 27, 2020, 5 a.m. N/A 0.0 ppb (0) 2.4 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) 5.0 μg/m3 (5) 4.1 μg/m3 (17) 17.0
 
Jan. 27, 2020, 4 a.m. N/A 0.0 ppb (0) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Jan. 27, 2020, 3 a.m. N/A 0.0 ppb (0) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) 5.0 μg/m3 (5) 3.6 μg/m3 (15) 17.0
 
Jan. 27, 2020, 2 a.m. N/A 0.0 ppb (0) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) 5.0 μg/m3 (5) 3.7 μg/m3 (15) 18.0
 
Jan. 27, 2020, 1 a.m. N/A 0.0 ppb (0) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) 4.0 μg/m3 (4) 3.2 μg/m3 (13) 18.0
 
Jan. 27, 2020, midnight N/A 0.0 ppb (0) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.19 ppb (2) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 19.0
 
Jan. 26, 2020, 11 p.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) 2.0 μg/m3 (2) 2.3 μg/m3 (10) 20.0
 
Jan. 26, 2020, 10 p.m. N/A 0.0 ppb (0) 2.4 ppb (2) N/A N/A N/A 24.0 ppb (18) 0.2 ppb (2) 2.0 μg/m3 (2) 1.9 μg/m3 (8) 18.0
 
Jan. 26, 2020, 9 p.m. N/A 0.1 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.21 ppb (2) 3.0 μg/m3 (3) 1.9 μg/m3 (8) 17.0
 
Jan. 26, 2020, 8 p.m. N/A 0.3 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.22 ppb (2) 2.0 μg/m3 (2) 1.5 μg/m3 (6) 16.0
 
Jan. 26, 2020, 7 p.m. N/A 0.4 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.23 ppb (3) 2.0 μg/m3 (2) 1.5 μg/m3 (6) 17.0
 
Jan. 26, 2020, 6 p.m. N/A 0.3 ppb (0) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.21 ppb (2) 3.0 μg/m3 (3) 2.3 μg/m3 (10) 18.0
 
Jan. 26, 2020, 5 p.m. N/A 0.4 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) 4.0 μg/m3 (4) 3.4 μg/m3 (14) 16.0
 
Jan. 26, 2020, 4 p.m. N/A 0.4 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.19 ppb (2) 4.0 μg/m3 (4) 3.6 μg/m3 (15) 16.0
 
Jan. 26, 2020, 3 p.m. N/A 0.5 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.19 ppb (2) 4.0 μg/m3 (4) 3.7 μg/m3 (15) 17.0
 
Jan. 26, 2020, 2 p.m. N/A 0.1 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.17 ppb (2) 3.0 μg/m3 (3) 2.9 μg/m3 (12) 20.0
 
Jan. 26, 2020, 1 p.m. N/A 0.0 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.17 ppb (2) 3.0 μg/m3 (3) 2.6 μg/m3 (11) 22.0
 
Jan. 26, 2020, noon N/A 0.0 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.16 ppb (2) 3.0 μg/m3 (3) 2.4 μg/m3 (10) 22.0
 
Jan. 26, 2020, 11 a.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.17 ppb (2) 2.0 μg/m3 (2) 2.1 μg/m3 (9) 23.0
 
Jan. 26, 2020, 10 a.m. N/A -0.2 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.16 ppb (2) 2.0 μg/m3 (2) 1.7 μg/m3 (7) 23.0
 
Jan. 26, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.17 ppb (2) 1.0 μg/m3 (1) 1.2 μg/m3 (5) 23.0
 
Jan. 26, 2020, 8 a.m. N/A 0.0 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.16 ppb (2) 1.0 μg/m3 (1) 1.1 μg/m3 (5) 24.0
 
Jan. 26, 2020, 7 a.m. N/A 0.0 ppb (0) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A 1.0 μg/m3 (1) 0.6 μg/m3 (2) 25.0
 
Jan. 26, 2020, 6 a.m. N/A 0.0 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.16 ppb (2) 0.0 μg/m3 (0) 0.0 μg/m3 (0) 26.0
 
Jan. 26, 2020, 5 a.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.16 ppb (2) 0.0 μg/m3 (0) 0.0 μg/m3 (0) 2.0
 
Jan. 26, 2020, 4 a.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.16 ppb (2) 0.0 μg/m3 (0) 0.0 μg/m3 (0) 26.0
 
Jan. 26, 2020, 3 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.16 ppb (2) 0.0 μg/m3 (0) 0.1 μg/m3 (0) 28.0
 
Jan. 26, 2020, 2 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) 0.0 μg/m3 (0) 0.2 μg/m3 (1) 30.0
 
Jan. 26, 2020, 1 a.m. N/A 0.0 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.16 ppb (2) 0.0 μg/m3 (0) 0.3 μg/m3 (1) 30.0
 
Jan. 26, 2020, midnight N/A 0.0 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) 0.0 μg/m3 (0) 0.3 μg/m3 (1) 30.0
 
Jan. 25, 2020, 11 p.m. N/A 0.0 ppb (0) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.16 ppb (2) 0.0 μg/m3 (0) 0.3 μg/m3 (1) 29.0
 
Jan. 25, 2020, 10 p.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A N/A 38.0 ppb (29) 0.15 ppb (2) 0.0 μg/m3 (0) 0.2 μg/m3 (1) 29.0
 
Jan. 25, 2020, 9 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) 0.0 μg/m3 (0) 0.4 μg/m3 (2) 30.0
 
Jan. 25, 2020, 8 p.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) 0.0 μg/m3 (0) 0.5 μg/m3 (2) 30.0
 
Jan. 25, 2020, 7 p.m. N/A 0.1 ppb (0) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) 0.0 μg/m3 (0) 0.5 μg/m3 (2) 30.0
 
Jan. 25, 2020, 6 p.m. N/A 0.1 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.16 ppb (2) 1.0 μg/m3 (1) 0.8 μg/m3 (3) 29.0
 
Jan. 25, 2020, 5 p.m. N/A 0.2 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.16 ppb (2) 2.0 μg/m3 (2) 1.8 μg/m3 (8) 29.0
 
Jan. 25, 2020, 4 p.m. N/A 0.1 ppb (0) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.15 ppb (2) 4.0 μg/m3 (4) 3.4 μg/m3 (14) 29.0
 
Jan. 25, 2020, 3 p.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) 8.0 μg/m3 (7) 4.5 μg/m3 (19) 30.0
 
Jan. 25, 2020, 2 p.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.15 ppb (2) 7.0 μg/m3 (6) 4.4 μg/m3 (18) 29.0
 
Jan. 25, 2020, 1 p.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.15 ppb (2) 5.0 μg/m3 (5) 3.9 μg/m3 (16) 29.0
 
Jan. 25, 2020, noon N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) 5.0 μg/m3 (5) 3.7 μg/m3 (15) 30.0
 
Jan. 25, 2020, 11 a.m. N/A 0.0 ppb (0) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.16 ppb (2) 8.0 μg/m3 (7) 4.8 μg/m3 (20) 30.0
 
Jan. 25, 2020, 10 a.m. N/A -0.2 ppb (0) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.17 ppb (2) 10.0 μg/m3 (9) 6.5 μg/m3 (27) 29.0
 
Jan. 25, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 13.0 μg/m3 (12) 8.9 μg/m3 (37) 37.0
 
Jan. 25, 2020, 8 a.m. N/A 0.0 ppb (0) 6.2 ppb (6) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.21 ppb (2) 15.0 μg/m3 (14) 11.0 μg/m3 (46) 46.0
 
Jan. 25, 2020, 7 a.m. N/A 0.0 ppb (0) 7.3 ppb (7) N/A N/A 0.0 ppb (0) 29.0 ppb (22) N/A 16.0 μg/m3 (15) 11.8 μg/m3 (49) 49.0
 
Jan. 25, 2020, 6 a.m. N/A 0.0 ppb (0) 7.8 ppb (7) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.23 ppb (3) 17.0 μg/m3 (15) 12.4 μg/m3 (51) 51.0
 
Jan. 25, 2020, 5 a.m. N/A 0.0 ppb (0) 8.4 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.24 ppb (3) 17.0 μg/m3 (15) 12.2 μg/m3 (50) 50.0
 
Jan. 25, 2020, 4 a.m. N/A 0.0 ppb (0) 10.7 ppb (10) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.26 ppb (3) 19.0 μg/m3 (17) 13.3 μg/m3 (53) 53.0
 
Jan. 25, 2020, 3 a.m. N/A 0.0 ppb (0) 13.9 ppb (13) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.3 ppb (3) 20.0 μg/m3 (18) 12.8 μg/m3 (52) 52.0
 
Jan. 25, 2020, 2 a.m. N/A 0.0 ppb (0) 15.4 ppb (14) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.29 ppb (3) 23.0 μg/m3 (21) 13.2 μg/m3 (53) 53.0
 
Jan. 25, 2020, 1 a.m. N/A 0.0 ppb (0) 11.9 ppb (11) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.27 ppb (3) 18.0 μg/m3 (16) 11.0 μg/m3 (46) 46.0
 
Jan. 25, 2020, midnight N/A 0.0 ppb (0) 9.1 ppb (8) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.24 ppb (3) 17.0 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
Jan. 24, 2020, 11 p.m. N/A 0.0 ppb (0) 6.8 ppb (6) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.21 ppb (2) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
Jan. 24, 2020, 10 p.m. N/A 0.0 ppb (0) 5.6 ppb (5) N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 16.0 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
Jan. 24, 2020, 9 p.m. N/A 0.5 ppb (0) 8.1 ppb (8) N/A N/A 1.0 ppb (1) 40.0 ppb (31) 0.26 ppb (3) 21.0 μg/m3 (19) 13.7 μg/m3 (54) 54.0
 
Jan. 24, 2020, 8 p.m. N/A 0.8 ppb (1) 7.3 ppb (7) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) 14.0 μg/m3 (13) 7.4 μg/m3 (31) 31.0
 
Jan. 24, 2020, 7 p.m. N/A 1.0 ppb (1) 5.9 ppb (5) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.18 ppb (2) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 32.0
 
Jan. 24, 2020, 6 p.m. N/A 0.6 ppb (1) 4.0 ppb (4) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.16 ppb (2) 9.0 μg/m3 (8) 5.1 μg/m3 (21) 34.0
 
Jan. 24, 2020, 5 p.m. N/A 0.8 ppb (1) 4.4 ppb (4) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.17 ppb (2) 9.0 μg/m3 (8) 5.3 μg/m3 (22) 32.0
 
Jan. 24, 2020, 4 p.m. N/A 0.8 ppb (1) 4.0 ppb (4) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.16 ppb (2) 9.0 μg/m3 (8) 5.8 μg/m3 (24) 32.0
 
Jan. 24, 2020, 3 p.m. N/A 0.9 ppb (1) 4.6 ppb (4) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.16 ppb (2) 10.0 μg/m3 (9) 6.2 μg/m3 (26) 30.0
 
Jan. 24, 2020, 2 p.m. N/A 0.2 ppb (0) 3.4 ppb (3) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) 8.0 μg/m3 (7) 5.1 μg/m3 (21) 32.0
 
Jan. 24, 2020, 1 p.m. N/A 0.1 ppb (0) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) 7.0 μg/m3 (6) 4.4 μg/m3 (18) 33.0
 
Jan. 24, 2020, noon N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) 8.0 μg/m3 (7) 4.9 μg/m3 (20) 32.0
 
Jan. 24, 2020, 11 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.12 ppb (1) 3.0 μg/m3 (3) 1.3 μg/m3 (5) 36.0
 
Jan. 24, 2020, 10 a.m. N/A 0.0 ppb (0) 3.2 ppb (3) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) 8.0 μg/m3 (7) 5.8 μg/m3 (24) 32.0
 
Jan. 24, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.15 ppb (2) 11.0 μg/m3 (10) 7.6 μg/m3 (32) 32.0
 
Jan. 24, 2020, 8 a.m. N/A 0.0 ppb (0) 4.0 ppb (4) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 30.0
 
Jan. 24, 2020, 7 a.m. N/A 0.0 ppb (0) 3.7 ppb (3) N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 7.0 μg/m3 (6) 4.6 μg/m3 (19) 31.0
 
Jan. 24, 2020, 6 a.m. N/A 0.0 ppb (0) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) 7.0 μg/m3 (6) 4.3 μg/m3 (18) 33.0
 
Jan. 24, 2020, 5 a.m. N/A 0.0 ppb (0) 7.0 ppb (6) N/A N/A 1.0 ppb (1) N/A 0.18 ppb (2) 13.0 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
Jan. 24, 2020, 4 a.m. N/A 0.0 ppb (0) 5.4 ppb (5) N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.17 ppb (2) 13.0 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
Jan. 24, 2020, 3 a.m. N/A 0.0 ppb (0) 4.0 ppb (4) N/A N/A 1.0 ppb (1) 40.0 ppb (31) 0.15 ppb (2) 11.0 μg/m3 (10) 5.8 μg/m3 (24) 31.0
 
Jan. 24, 2020, 2 a.m. N/A 0.0 ppb (0) 5.4 ppb (5) N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.17 ppb (2) 15.0 μg/m3 (14) 7.7 μg/m3 (32) 32.0
 
Jan. 24, 2020, 1 a.m. N/A 0.0 ppb (0) 6.4 ppb (6) N/A N/A 1.0 ppb (1) 36.0 ppb (28) 0.17 ppb (2) 14.0 μg/m3 (13) 8.3 μg/m3 (35) 35.0
 
Jan. 24, 2020, midnight N/A 0.0 ppb (0) 5.4 ppb (5) N/A N/A 1.0 ppb (1) 38.0 ppb (29) 0.16 ppb (2) 15.0 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
Jan. 23, 2020, 11 p.m. N/A 0.0 ppb (0) 6.8 ppb (6) N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.18 ppb (2) 16.0 μg/m3 (15) 8.6 μg/m3 (36) 36.0
 
Jan. 23, 2020, 10 p.m. N/A 0.0 ppb (0) 6.1 ppb (6) N/A N/A N/A 39.0 ppb (30) 0.16 ppb (2) 14.0 μg/m3 (13) 7.1 μg/m3 (30) 30.0
 
Jan. 23, 2020, 9 p.m. N/A 0.0 ppb (0) 4.6 ppb (4) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.15 ppb (2) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 32.0
 
Jan. 23, 2020, 8 p.m. N/A 0.2 ppb (0) 4.1 ppb (4) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.15 ppb (2) 10.0 μg/m3 (9) 5.4 μg/m3 (23) 32.0
 
Jan. 23, 2020, 7 p.m. N/A 0.3 ppb (0) 3.5 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) 9.0 μg/m3 (8) 5.3 μg/m3 (22) 33.0
 
Jan. 23, 2020, 6 p.m. N/A 0.3 ppb (0) 3.2 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) 9.0 μg/m3 (8) 5.6 μg/m3 (23) 33.0
 
Jan. 23, 2020, 5 p.m. N/A 0.4 ppb (0) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) 8.0 μg/m3 (7) 5.4 μg/m3 (23) 33.0
 
Jan. 23, 2020, 4 p.m. N/A 0.5 ppb (0) 3.5 ppb (3) N/A N/A 1.0 ppb (1) 42.0 ppb (32) 0.14 ppb (2) 9.0 μg/m3 (8) 6.0 μg/m3 (25) 32.0
 
Jan. 23, 2020, 3 p.m. N/A 0.7 ppb (1) 4.1 ppb (4) N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.15 ppb (2) 9.0 μg/m3 (8) 6.2 μg/m3 (26) 30.0
 
Jan. 23, 2020, 2 p.m. N/A 0.5 ppb (0) 4.2 ppb (4) N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.15 ppb (2) 10.0 μg/m3 (9) 6.5 μg/m3 (27) 30.0
 
Jan. 23, 2020, 1 p.m. N/A 0.3 ppb (0) 4.3 ppb (4) N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.15 ppb (2) 9.0 μg/m3 (8) 5.3 μg/m3 (22) 30.0
 
Jan. 23, 2020, noon N/A 0.0 ppb (0) 3.4 ppb (3) N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.14 ppb (2) 8.0 μg/m3 (7) 4.9 μg/m3 (20) 30.0
 
Jan. 23, 2020, 11 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) 9.0 μg/m3 (8) 5.6 μg/m3 (23) 30.0
 
Jan. 23, 2020, 10 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) 7.0 μg/m3 (6) 4.1 μg/m3 (17) 32.0
 
Jan. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.13 ppb (1) 7.0 μg/m3 (6) 3.9 μg/m3 (16) 32.0
 
Jan. 23, 2020, 8 a.m. N/A 0.0 ppb (0) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 8.0 μg/m3 (7) 4.4 μg/m3 (18) 31.0
 
Jan. 23, 2020, 7 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A 11.0 μg/m3 (10) 5.7 μg/m3 (24) 29.0
 
Jan. 23, 2020, 6 a.m. N/A 0.0 ppb (0) 3.3 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.16 ppb (2) 11.0 μg/m3 (10) 6.4 μg/m3 (27) 29.0
 
Jan. 23, 2020, 5 a.m. N/A 0.0 ppb (0) 2.3 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) 9.0 μg/m3 (8) 5.4 μg/m3 (23) 23.0
 
Jan. 23, 2020, 4 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) 10.0 μg/m3 (9) 5.9 μg/m3 (25) 30.0
 
Jan. 23, 2020, 3 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.16 ppb (2) 12.0 μg/m3 (11) 5.9 μg/m3 (25) 29.0
 
Jan. 23, 2020, 2 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.16 ppb (2) 12.0 μg/m3 (11) 6.3 μg/m3 (26) 31.0
 
Jan. 23, 2020, 1 a.m. N/A 0.0 ppb (0) 4.3 ppb (4) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.17 ppb (2) 11.0 μg/m3 (10) 6.9 μg/m3 (29) 30.0
 
Jan. 23, 2020, midnight N/A 0.0 ppb (0) 3.4 ppb (3) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.16 ppb (2) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 31.0
 
Jan. 22, 2020, 11 p.m. N/A 0.0 ppb (0) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) 10.0 μg/m3 (9) 5.2 μg/m3 (22) 32.0
 
Jan. 22, 2020, 10 p.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A N/A 43.0 ppb (33) 0.14 ppb (2) 8.0 μg/m3 (7) 4.6 μg/m3 (19) 33.0
 
Jan. 22, 2020, 9 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) 9.0 μg/m3 (8) 4.6 μg/m3 (19) 33.0
 
Jan. 22, 2020, 8 p.m. N/A 0.1 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) 9.0 μg/m3 (8) 4.8 μg/m3 (20) 33.0
 
Jan. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.15 ppb (2) 9.0 μg/m3 (8) 5.8 μg/m3 (24) 32.0
 
Jan. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) 9.0 μg/m3 (8) 5.6 μg/m3 (23) 32.0
 
Jan. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.14 ppb (2) 8.0 μg/m3 (7) 5.4 μg/m3 (23) 32.0
 
Jan. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 8.0 μg/m3 (7) 5.3 μg/m3 (22) 31.0
 
Jan. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) 9.0 μg/m3 (8) 6.0 μg/m3 (25) 30.0
 
Jan. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) 9.0 μg/m3 (8) 6.2 μg/m3 (26) 30.0
 
Jan. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 10.0 μg/m3 (9) 6.9 μg/m3 (29) 31.0
 
Jan. 22, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 9.0 μg/m3 (8) 6.6 μg/m3 (28) 31.0
 
Jan. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.14 ppb (2) 9.0 μg/m3 (8) 6.5 μg/m3 (27) 31.0
 
Jan. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 9.0 μg/m3 (8) 6.1 μg/m3 (25) 31.0
 
Jan. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 9.0 μg/m3 (8) 5.6 μg/m3 (23) 31.0
 
Jan. 22, 2020, 8 a.m. N/A -0.2 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 8.0 μg/m3 (7) 4.8 μg/m3 (20) 31.0
 
Jan. 22, 2020, 7 a.m. N/A -0.1 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 31.0
 
Jan. 22, 2020, 6 a.m. N/A -0.1 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) 5.0 μg/m3 (5) 3.5 μg/m3 (15) 32.0
 
Jan. 22, 2020, 5 a.m. N/A -0.1 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (1) 5.0 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Jan. 22, 2020, 4 a.m. N/A -0.1 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.12 ppb (1) 7.0 μg/m3 (6) 3.1 μg/m3 (13) 32.0
 
Jan. 22, 2020, 3 a.m. N/A -0.1 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) 8.0 μg/m3 (7) 3.4 μg/m3 (14) 32.0
 
Jan. 22, 2020, 2 a.m. N/A -0.1 ppb (0) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 9.0 μg/m3 (8) 3.6 μg/m3 (15) 31.0
 
Jan. 22, 2020, 1 a.m. N/A -0.1 ppb (0) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) 10.0 μg/m3 (9) 3.7 μg/m3 (15) 32.0
 
Jan. 22, 2020, midnight N/A -0.1 ppb (0) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 10.0 μg/m3 (9) 3.7 μg/m3 (15) 31.0
 
Jan. 21, 2020, 11 p.m. N/A -0.1 ppb (0) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 11.0 μg/m3 (10) 3.9 μg/m3 (16) 31.0
 
Jan. 21, 2020, 10 p.m. N/A -0.2 ppb (0) 1.6 ppb (1) N/A N/A N/A 40.0 ppb (31) 0.13 ppb (1) 13.0 μg/m3 (12) 3.9 μg/m3 (16) 31.0
 
Jan. 21, 2020, 9 p.m. N/A -0.1 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.14 ppb (2) 12.0 μg/m3 (11) 3.8 μg/m3 (16) 31.0
 
Jan. 21, 2020, 8 p.m. N/A 0.0 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.13 ppb (1) 9.0 μg/m3 (8) 2.9 μg/m3 (12) 32.0
 
Jan. 21, 2020, 7 p.m. N/A 0.1 ppb (0) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) 7.0 μg/m3 (6) 2.4 μg/m3 (10) 32.0
 
Jan. 21, 2020, 6 p.m. N/A 0.1 ppb (0) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) 8.0 μg/m3 (7) 2.9 μg/m3 (12) 32.0
 
Jan. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) N/A N/A 32.0
 
Jan. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.12 ppb (1) N/A N/A 32.0
 
Jan. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) 6.0 μg/m3 (5) 3.1 μg/m3 (13) 30.0
 
Jan. 21, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 29.0
 
Jan. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.13 ppb (1) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 28.0
 
Jan. 21, 2020, noon N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) 4.0 μg/m3 (4) 3.1 μg/m3 (13) 30.0
 
Jan. 21, 2020, 11 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) 6.0 μg/m3 (5) 3.4 μg/m3 (14) 30.0
 
Jan. 21, 2020, 10 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) 7.0 μg/m3 (6) 3.6 μg/m3 (15) 30.0
 
Jan. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 5.0 μg/m3 (5) 3.1 μg/m3 (13) 31.0
 
Jan. 21, 2020, 8 a.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (1) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Jan. 21, 2020, 7 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 5.0 μg/m3 (5) 2.6 μg/m3 (11) 11.0
 
Jan. 21, 2020, 6 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (1) 4.0 μg/m3 (4) 2.4 μg/m3 (10) 10.0
 
Jan. 21, 2020, 5 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.13 ppb (1) 4.0 μg/m3 (4) 2.4 μg/m3 (10) 10.0
 
Jan. 21, 2020, 4 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (1) 3.0 μg/m3 (3) 2.2 μg/m3 (9) 9.0
 
Jan. 21, 2020, 3 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (1) 5.0 μg/m3 (5) 1.9 μg/m3 (8) 8.0
 
Jan. 21, 2020, 2 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (1) 5.0 μg/m3 (5) 1.9 μg/m3 (8) 8.0
 
Jan. 21, 2020, 1 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) 4.0 μg/m3 (4) 2.1 μg/m3 (9) 32.0
 
Jan. 21, 2020, midnight N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 32.0
 
Jan. 20, 2020, 11 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.12 ppb (1) 4.0 μg/m3 (4) 1.9 μg/m3 (8) 32.0
 
Jan. 20, 2020, 10 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A N/A 41.0 ppb (32) 0.12 ppb (1) 8.0 μg/m3 (7) 1.9 μg/m3 (8) 32.0
 
Jan. 20, 2020, 9 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.12 ppb (1) 7.0 μg/m3 (6) 1.6 μg/m3 (7) 32.0
 
Jan. 20, 2020, 8 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) 4.0 μg/m3 (4) 1.4 μg/m3 (6) 32.0
 
Jan. 20, 2020, 7 p.m. N/A 0.1 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.12 ppb (1) 8.0 μg/m3 (7) 1.7 μg/m3 (7) 32.0
 
Jan. 20, 2020, 6 p.m. N/A 0.1 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.11 ppb (1) 5.0 μg/m3 (5) 1.6 μg/m3 (7) 33.0
 
Jan. 20, 2020, 5 p.m. N/A 0.2 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.12 ppb (1) 4.0 μg/m3 (4) 1.9 μg/m3 (8) 33.0
 
Jan. 20, 2020, 4 p.m. N/A 0.2 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.12 ppb (1) 6.0 μg/m3 (5) 2.2 μg/m3 (9) 31.0
 
Jan. 20, 2020, 3 p.m. N/A 0.2 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) 5.0 μg/m3 (5) 2.4 μg/m3 (10) 30.0