ID: 1021

AQSQID: 090050005

Site Name: Cornwall

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

Updated: Jan. 18, 2021, 11:31 p.m.

Location: W Cornwall (E Cornwall), CT

Reporting: True, Located: True

Current AQI: 29.0

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. 18, 2021, 10 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A N/A 31.0 ppb (29) 0.11 ppb (2) 6.8 μg/m3 (7) 3.8 μg/m3 (16) 29.0
 
Jan. 18, 2021, 9 p.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) 7.3 μg/m3 (7) 4.0 μg/m3 (17) 26.0
 
Jan. 18, 2021, 8 p.m. N/A 0.1 ppb (1) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.15 ppb (2) 7.1 μg/m3 (7) 3.6 μg/m3 (16) 25.0
 
Jan. 18, 2021, 7 p.m. N/A 0.2 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.17 ppb (3) 4.2 μg/m3 (4) 3.1 μg/m3 (13) 24.0
 
Jan. 18, 2021, 6 p.m. N/A 0.3 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.15 ppb (2) 4.1 μg/m3 (4) 3.4 μg/m3 (15) 25.0
 
Jan. 18, 2021, 5 p.m. N/A 0.5 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.15 ppb (2) 5.5 μg/m3 (6) 4.0 μg/m3 (17) 23.0
 
Jan. 18, 2021, 4 p.m. N/A 0.6 ppb (1) 2.2 ppb (3) N/A N/A 0.0 ppb (0) 23.0 ppb (22) 0.14 ppb (2) 6.9 μg/m3 (7) 4.7 μg/m3 (20) 22.0
 
Jan. 18, 2021, 3 p.m. N/A 0.9 ppb (1) 2.4 ppb (3) N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.18 ppb (3) 8.9 μg/m3 (9) 5.8 μg/m3 (25) 25.0
 
Jan. 18, 2021, 2 p.m. N/A 0.6 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.16 ppb (3) 9.9 μg/m3 (10) 6.2 μg/m3 (26) 26.0
 
Jan. 18, 2021, 1 p.m. N/A 0.3 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.14 ppb (2) 10.7 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2021, noon N/A 0.1 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 23.0 ppb (22) 0.15 ppb (2) 9.9 μg/m3 (10) 6.8 μg/m3 (29) 29.0
 
Jan. 18, 2021, 11 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A N/A 1.0 ppb (2) 24.0 ppb (23) 0.19 ppb (3) 9.8 μg/m3 (10) 7.0 μg/m3 (30) 30.0
 
Jan. 18, 2021, 10 a.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.17 ppb (3) 12.0 μg/m3 (12) 8.3 μg/m3 (35) 35.0
 
Jan. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.14 ppb (2) 12.8 μg/m3 (12) 9.2 μg/m3 (39) 39.0
 
Jan. 18, 2021, 8 a.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.14 ppb (2) 12.4 μg/m3 (12) 9.2 μg/m3 (39) 39.0
 
Jan. 18, 2021, 7 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A 11.7 μg/m3 (11) 8.5 μg/m3 (36) 36.0
 
Jan. 18, 2021, 6 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.14 ppb (2) 12.4 μg/m3 (12) 8.6 μg/m3 (36) 36.0
 
Jan. 18, 2021, 5 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.17 ppb (3) 14.0 μg/m3 (13) 8.1 μg/m3 (34) 34.0
 
Jan. 18, 2021, 4 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) 11.7 μg/m3 (11) 7.5 μg/m3 (32) 32.0
 
Jan. 18, 2021, 3 a.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.19 ppb (3) 11.1 μg/m3 (11) 7.5 μg/m3 (32) 32.0
 
Jan. 18, 2021, 2 a.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.17 ppb (3) 23.5 μg/m3 (22) 7.5 μg/m3 (32) 32.0
 
Jan. 18, 2021, 1 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.18 ppb (3) 22.4 μg/m3 (21) 7.1 μg/m3 (30) 30.0
 
Jan. 18, 2021, midnight N/A 0.0 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.16 ppb (3) 12.0 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
Jan. 17, 2021, 11 p.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.17 ppb (3) 9.3 μg/m3 (9) 6.4 μg/m3 (27) 29.0
 
Jan. 17, 2021, 10 p.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A N/A N/A 30.0 ppb (28) 0.16 ppb (3) 17.0 μg/m3 (16) 7.3 μg/m3 (31) 31.0
 
Jan. 17, 2021, 9 p.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.19 ppb (3) 9.3 μg/m3 (9) 6.2 μg/m3 (26) 27.0
 
Jan. 17, 2021, 8 p.m. N/A 0.1 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.17 ppb (3) 9.3 μg/m3 (9) 6.3 μg/m3 (27) 27.0
 
Jan. 17, 2021, 7 p.m. N/A 0.1 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.19 ppb (3) 10.5 μg/m3 (10) 6.7 μg/m3 (28) 28.0
 
Jan. 17, 2021, 6 p.m. N/A 0.1 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.16 ppb (3) 9.0 μg/m3 (9) 5.8 μg/m3 (25) 27.0
 
Jan. 17, 2021, 5 p.m. N/A 0.2 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.15 ppb (2) 9.7 μg/m3 (9) 6.6 μg/m3 (28) 28.0
 
Jan. 17, 2021, 4 p.m. N/A 0.1 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.14 ppb (2) 9.8 μg/m3 (10) 7.0 μg/m3 (30) 30.0
 
Jan. 17, 2021, 3 p.m. N/A 0.2 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.18 ppb (3) 10.5 μg/m3 (10) 7.2 μg/m3 (31) 31.0
 
Jan. 17, 2021, 2 p.m. N/A 0.2 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.14 ppb (2) 10.4 μg/m3 (10) 7.2 μg/m3 (31) 31.0
 
Jan. 17, 2021, 1 p.m. N/A 0.1 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.11 ppb (2) 13.9 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
Jan. 17, 2021, noon N/A 0.0 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.11 ppb (2) 16.6 μg/m3 (16) 8.4 μg/m3 (36) 36.0
 
Jan. 17, 2021, 11 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.14 ppb (2) 13.5 μg/m3 (13) 8.7 μg/m3 (37) 37.0
 
Jan. 17, 2021, 10 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.12 ppb (2) 14.9 μg/m3 (14) 9.2 μg/m3 (39) 39.0
 
Jan. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.16 ppb (3) 16.1 μg/m3 (15) 10.2 μg/m3 (43) 43.0
 
Jan. 17, 2021, 8 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.13 ppb (2) 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2021, 7 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A 15.8 μg/m3 (15) 10.4 μg/m3 (44) 44.0
 
Jan. 17, 2021, 6 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.13 ppb (2) 30.9 μg/m3 (29) 11.1 μg/m3 (47) 47.0
 
Jan. 17, 2021, 5 a.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.16 ppb (3) 14.9 μg/m3 (14) 10.5 μg/m3 (44) 44.0
 
Jan. 17, 2021, 4 a.m. N/A 0.0 ppb (0) 2.2 ppb (3) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.13 ppb (2) 17.6 μg/m3 (17) 12.5 μg/m3 (52) 52.0
 
Jan. 17, 2021, 3 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.16 ppb (3) 16.9 μg/m3 (16) 12.0 μg/m3 (50) 50.0
 
Jan. 17, 2021, 2 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.15 ppb (2) 13.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2021, 1 a.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.26 ppb (4) 7.3 μg/m3 (7) 5.0 μg/m3 (21) 29.0
 
Jan. 17, 2021, midnight N/A 0.0 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.2 ppb (3) 6.5 μg/m3 (7) 4.4 μg/m3 (19) 27.0
 
Jan. 16, 2021, 11 p.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.19 ppb (3) 4.1 μg/m3 (4) 2.6 μg/m3 (11) 26.0
 
Jan. 16, 2021, 10 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A N/A 29.0 ppb (27) 0.21 ppb (3) 2.2 μg/m3 (3) 1.0 μg/m3 (5) 27.0
 
Jan. 16, 2021, 9 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.15 ppb (2) 3.5 μg/m3 (4) 2.8 μg/m3 (12) 28.0
 
Jan. 16, 2021, 8 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.15 ppb (2) 3.7 μg/m3 (4) 3.2 μg/m3 (14) 29.0
 
Jan. 16, 2021, 7 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.17 ppb (3) 1.9 μg/m3 (2) 1.6 μg/m3 (7) 29.0
 
Jan. 16, 2021, 6 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.15 ppb (2) 1.0 μg/m3 (1) 0.8 μg/m3 (4) 29.0
 
Jan. 16, 2021, 5 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.16 ppb (3) 0.3 μg/m3 (1) 0.1 μg/m3 (1) 29.0
 
Jan. 16, 2021, 4 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.15 ppb (2) 1.0 μg/m3 (1) 0.0 μg/m3 (0) 29.0
 
Jan. 16, 2021, 3 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.17 ppb (3) 0.1 μg/m3 (1) 0.0 μg/m3 (0) 31.0
 
Jan. 16, 2021, 2 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.15 ppb (2) 0.4 μg/m3 (1) 0.2 μg/m3 (1) 32.0
 
Jan. 16, 2021, 1 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.16 ppb (3) 0.5 μg/m3 (1) 0.2 μg/m3 (1) 32.0
 
Jan. 16, 2021, noon N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.14 ppb (2) 0.7 μg/m3 (1) 0.4 μg/m3 (2) 31.0
 
Jan. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.15 ppb (2) 0.8 μg/m3 (1) 0.5 μg/m3 (3) 30.0
 
Jan. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.15 ppb (2) 15.0 μg/m3 (14) 0.8 μg/m3 (4) 30.0
 
Jan. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.16 ppb (3) 1.8 μg/m3 (2) 1.3 μg/m3 (6) 29.0
 
Jan. 16, 2021, 8 a.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.15 ppb (2) 4.9 μg/m3 (5) 3.2 μg/m3 (14) 30.0
 
Jan. 16, 2021, 7 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A 9.1 μg/m3 (9) 5.6 μg/m3 (24) 30.0
 
Jan. 16, 2021, 6 a.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.15 ppb (2) 8.8 μg/m3 (9) 5.6 μg/m3 (24) 31.0
 
Jan. 16, 2021, 5 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.19 ppb (3) 10.0 μg/m3 (10) 6.5 μg/m3 (28) 28.0
 
Jan. 16, 2021, 4 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.19 ppb (3) 12.0 μg/m3 (12) 7.6 μg/m3 (32) 32.0
 
Jan. 16, 2021, 3 a.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.19 ppb (3) 13.6 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
Jan. 16, 2021, 2 a.m. N/A 0.0 ppb (0) 3.2 ppb (4) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.18 ppb (3) 18.4 μg/m3 (18) 12.7 μg/m3 (53) 53.0
 
Jan. 16, 2021, 1 a.m. N/A 0.0 ppb (0) 4.5 ppb (5) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.2 ppb (3) 25.5 μg/m3 (24) 18.7 μg/m3 (65) 65.0
 
Jan. 16, 2021, midnight N/A 0.1 ppb (1) 5.8 ppb (6) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.2 ppb (3) 30.5 μg/m3 (29) 22.9 μg/m3 (74) 74.0
 
Jan. 15, 2021, 11 p.m. N/A 0.1 ppb (1) 8.1 ppb (8) N/A N/A 0.0 ppb (0) 20.0 ppb (19) 0.27 ppb (4) 36.6 μg/m3 (34) 27.0 μg/m3 (83) 83.0
 
Jan. 15, 2021, 10 p.m. N/A 0.1 ppb (1) 9.1 ppb (9) N/A N/A N/A 18.0 ppb (17) 0.23 ppb (3) 37.0 μg/m3 (35) 27.5 μg/m3 (84) 84.0
 
Jan. 15, 2021, 9 p.m. N/A 0.3 ppb (1) 8.5 ppb (9) N/A N/A 0.0 ppb (0) 20.0 ppb (19) 0.23 ppb (3) 33.9 μg/m3 (32) 25.2 μg/m3 (79) 79.0
 
Jan. 15, 2021, 8 p.m. N/A 0.4 ppb (1) 7.5 ppb (8) N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.2 ppb (3) 33.1 μg/m3 (31) 24.8 μg/m3 (78) 78.0
 
Jan. 15, 2021, 7 p.m. N/A 0.4 ppb (1) 5.4 ppb (6) N/A N/A 0.0 ppb (0) 23.0 ppb (22) 0.22 ppb (3) 31.6 μg/m3 (30) 24.0 μg/m3 (77) 77.0
 
Jan. 15, 2021, 6 p.m. N/A 0.4 ppb (1) 4.1 ppb (4) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.19 ppb (3) 28.5 μg/m3 (27) 22.1 μg/m3 (73) 73.0
 
Jan. 15, 2021, 5 p.m. N/A 0.3 ppb (1) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.18 ppb (3) 24.9 μg/m3 (24) 19.7 μg/m3 (67) 67.0
 
Jan. 15, 2021, 4 p.m. N/A 0.3 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.17 ppb (3) 21.3 μg/m3 (20) 17.0 μg/m3 (62) 62.0
 
Jan. 15, 2021, 3 p.m. N/A 0.4 ppb (1) 3.3 ppb (4) N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.22 ppb (3) 14.0 μg/m3 (13) 11.2 μg/m3 (47) 47.0
 
Jan. 15, 2021, 2 p.m. N/A 0.7 ppb (1) 4.5 ppb (5) N/A N/A 0.0 ppb (0) 16.0 ppb (15) 0.22 ppb (3) 16.9 μg/m3 (16) 13.7 μg/m3 (55) 55.0
 
Jan. 15, 2021, 1 p.m. N/A 0.4 ppb (1) 3.3 ppb (4) N/A N/A 0.0 ppb (0) 16.0 ppb (15) 0.22 ppb (3) 23.0 μg/m3 (22) 18.9 μg/m3 (66) 66.0
 
Jan. 15, 2021, noon N/A 0.1 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.18 ppb (3) 15.8 μg/m3 (15) 12.5 μg/m3 (52) 52.0
 
Jan. 15, 2021, 11 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 20.0 ppb (19) 0.17 ppb (3) 17.2 μg/m3 (16) 13.6 μg/m3 (55) 55.0
 
Jan. 15, 2021, 10 a.m. N/A 0.1 ppb (1) 2.2 ppb (3) N/A N/A 0.0 ppb (0) 18.0 ppb (17) 0.18 ppb (3) 19.9 μg/m3 (19) 16.1 μg/m3 (60) 60.0
 
Jan. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.2 ppb (3) 36.8 μg/m3 (35) 27.3 μg/m3 (83) 83.0
 
Jan. 15, 2021, 8 a.m. N/A 0.0 ppb (0) 4.5 ppb (5) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.17 ppb (3) 38.8 μg/m3 (36) 27.7 μg/m3 (84) 84.0
 
Jan. 15, 2021, 7 a.m. N/A 0.0 ppb (0) 4.7 ppb (5) N/A N/A 0.0 ppb (0) 26.0 ppb (25) N/A 40.4 μg/m3 (38) 28.1 μg/m3 (85) 85.0
 
Jan. 15, 2021, 6 a.m. N/A 0.0 ppb (0) 4.7 ppb (5) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.18 ppb (3) 39.4 μg/m3 (37) 27.2 μg/m3 (83) 83.0
 
Jan. 15, 2021, 5 a.m. N/A 0.0 ppb (0) 4.7 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.18 ppb (3) 38.2 μg/m3 (36) 27.2 μg/m3 (83) 83.0
 
Jan. 15, 2021, 4 a.m. N/A 0.0 ppb (0) 4.8 ppb (5) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.17 ppb (3) 38.0 μg/m3 (36) 26.6 μg/m3 (82) 82.0
 
Jan. 15, 2021, 3 a.m. N/A 0.0 ppb (0) 4.9 ppb (5) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) 39.0 μg/m3 (37) 27.1 μg/m3 (83) 83.0
 
Jan. 15, 2021, 2 a.m. N/A 0.1 ppb (1) 4.9 ppb (5) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.17 ppb (3) 37.1 μg/m3 (35) 25.4 μg/m3 (79) 79.0
 
Jan. 15, 2021, 1 a.m. N/A 0.0 ppb (0) 3.8 ppb (4) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.18 ppb (3) 24.9 μg/m3 (24) 18.4 μg/m3 (65) 65.0
 
Jan. 15, 2021, midnight N/A 0.0 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.15 ppb (2) 17.1 μg/m3 (16) 13.9 μg/m3 (55) 55.0
 
Jan. 14, 2021, 11 p.m. N/A 0.0 ppb (0) 3.9 ppb (4) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.2 ppb (3) 29.3 μg/m3 (28) 23.2 μg/m3 (75) 75.0
 
Jan. 14, 2021, 10 p.m. N/A 0.0 ppb (0) 5.2 ppb (5) N/A N/A N/A 26.0 ppb (25) 0.18 ppb (3) 35.6 μg/m3 (33) 26.8 μg/m3 (82) 82.0
 
Jan. 14, 2021, 9 p.m. N/A 0.2 ppb (1) 6.3 ppb (6) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.2 ppb (3) 39.7 μg/m3 (37) 29.2 μg/m3 (87) 87.0
 
Jan. 14, 2021, 8 p.m. N/A 0.4 ppb (1) 6.7 ppb (7) N/A N/A 0.0 ppb (0) 23.0 ppb (22) 0.21 ppb (3) 39.1 μg/m3 (37) 29.4 μg/m3 (88) 88.0
 
Jan. 14, 2021, 7 p.m. N/A 0.5 ppb (1) 6.7 ppb (7) N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.41 ppb (5) 38.8 μg/m3 (36) 29.6 μg/m3 (88) 88.0
 
Jan. 14, 2021, 6 p.m. N/A 0.6 ppb (1) 6.1 ppb (6) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.29 ppb (4) 35.1 μg/m3 (33) 26.3 μg/m3 (81) 81.0
 
Jan. 14, 2021, 5 p.m. N/A 0.9 ppb (1) 6.6 ppb (7) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.22 ppb (3) 38.0 μg/m3 (36) 28.7 μg/m3 (86) 86.0
 
Jan. 14, 2021, 4 p.m. N/A 0.5 ppb (1) 6.3 ppb (6) N/A N/A 1.0 ppb (2) 26.0 ppb (25) 0.19 ppb (3) 38.5 μg/m3 (36) 28.4 μg/m3 (86) 86.0
 
Jan. 14, 2021, 3 p.m. N/A 0.8 ppb (1) 6.5 ppb (7) N/A N/A 1.0 ppb (2) 25.0 ppb (24) 0.2 ppb (3) 39.8 μg/m3 (37) 29.7 μg/m3 (89) 89.0
 
Jan. 14, 2021, 2 p.m. N/A 0.7 ppb (1) 7.3 ppb (7) N/A N/A 1.0 ppb (2) 23.0 ppb (22) 0.19 ppb (3) 44.1 μg/m3 (41) 33.5 μg/m3 (97) 97.0
 
Jan. 14, 2021, 1 p.m. N/A 0.3 ppb (1) 7.0 ppb (7) N/A N/A 1.0 ppb (2) 22.0 ppb (21) 0.21 ppb (3) 43.6 μg/m3 (41) 32.4 μg/m3 (94) 94.0
 
Jan. 14, 2021, noon N/A 0.1 ppb (1) 6.1 ppb (6) N/A N/A 1.0 ppb (2) 26.0 ppb (25) 0.16 ppb (3) 37.5 μg/m3 (35) 28.1 μg/m3 (85) 85.0
 
Jan. 14, 2021, 11 a.m. N/A 0.1 ppb (1) 6.0 ppb (6) N/A N/A 1.0 ppb (2) 28.0 ppb (26) 0.16 ppb (3) 35.6 μg/m3 (33) 24.9 μg/m3 (78) 78.0
 
Jan. 14, 2021, 10 a.m. N/A 0.1 ppb (1) 6.8 ppb (7) N/A N/A 1.0 ppb (2) 25.0 ppb (24) 0.26 ppb (4) 34.8 μg/m3 (33) 26.3 μg/m3 (81) 81.0
 
Jan. 14, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) 0.2 ppb (3) 41.9 μg/m3 (39) 29.1 μg/m3 (87) 87.0
 
Jan. 14, 2021, 8 a.m. N/A 0.1 ppb (1) 7.5 ppb (8) N/A N/A 1.0 ppb (2) 25.0 ppb (24) 0.19 ppb (3) 49.0 μg/m3 (46) 30.8 μg/m3 (91) 91.0
 
Jan. 14, 2021, 7 a.m. N/A 0.1 ppb (1) 7.8 ppb (8) N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 50.9 μg/m3 (48) 33.2 μg/m3 (96) 96.0
 
Jan. 14, 2021, 6 a.m. N/A 0.0 ppb (0) 7.8 ppb (8) N/A N/A 1.0 ppb (2) 22.0 ppb (21) 0.2 ppb (3) 48.7 μg/m3 (46) 35.1 μg/m3 (100) 100.0
 
Jan. 14, 2021, 5 a.m. N/A 0.1 ppb (1) 6.8 ppb (7) N/A N/A 1.0 ppb (2) N/A 0.2 ppb (3) 49.5 μg/m3 (46) 34.0 μg/m3 (98) 98.0
 
Jan. 14, 2021, 4 a.m. N/A 0.1 ppb (1) 6.8 ppb (7) N/A N/A 1.0 ppb (2) 23.0 ppb (22) 0.18 ppb (3) 47.3 μg/m3 (44) 34.3 μg/m3 (98) 98.0
 
Jan. 14, 2021, 3 a.m. N/A 0.0 ppb (0) 5.7 ppb (6) N/A N/A 1.0 ppb (2) 25.0 ppb (24) 0.16 ppb (3) 40.7 μg/m3 (38) 27.9 μg/m3 (85) 85.0
 
Jan. 14, 2021, 2 a.m. N/A 0.0 ppb (0) 5.1 ppb (5) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.17 ppb (3) 38.1 μg/m3 (36) 23.5 μg/m3 (75) 75.0
 
Jan. 14, 2021, 1 a.m. N/A 0.1 ppb (1) 6.2 ppb (6) N/A N/A 0.0 ppb (0) 23.0 ppb (22) 0.18 ppb (3) 35.8 μg/m3 (34) 24.0 μg/m3 (77) 77.0
 
Jan. 14, 2021, midnight N/A 0.1 ppb (1) 9.7 ppb (10) N/A N/A 1.0 ppb (2) 18.0 ppb (17) 0.21 ppb (3) 29.8 μg/m3 (28) 21.0 μg/m3 (70) 70.0
 
Jan. 13, 2021, 11 p.m. N/A 0.1 ppb (1) 10.9 ppb (11) N/A N/A 1.0 ppb (2) 16.0 ppb (15) 0.27 ppb (4) 26.9 μg/m3 (25) 20.4 μg/m3 (69) 69.0
 
Jan. 13, 2021, 10 p.m. N/A 0.1 ppb (1) 10.2 ppb (10) N/A N/A N/A 17.0 ppb (16) 0.24 ppb (3) 33.5 μg/m3 (32) 24.8 μg/m3 (78) 78.0
 
Jan. 13, 2021, 9 p.m. N/A 0.3 ppb (1) 9.3 ppb (9) N/A N/A 1.0 ppb (2) 19.0 ppb (18) 0.22 ppb (3) 32.9 μg/m3 (31) 24.4 μg/m3 (77) 77.0
 
Jan. 13, 2021, 8 p.m. N/A 0.4 ppb (1) 8.6 ppb (9) N/A N/A 1.0 ppb (2) 21.0 ppb (20) 0.22 ppb (3) 30.4 μg/m3 (29) 22.8 μg/m3 (74) 74.0
 
Jan. 13, 2021, 7 p.m. N/A 0.5 ppb (1) 6.5 ppb (7) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.17 ppb (3) 27.3 μg/m3 (26) 19.7 μg/m3 (67) 67.0
 
Jan. 13, 2021, 6 p.m. N/A 0.3 ppb (1) 5.0 ppb (5) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.2 ppb (3) 26.1 μg/m3 (25) 19.4 μg/m3 (67) 67.0
 
Jan. 13, 2021, 5 p.m. N/A 0.3 ppb (1) 3.9 ppb (4) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.18 ppb (3) 23.4 μg/m3 (22) 17.2 μg/m3 (62) 62.0
 
Jan. 13, 2021, 4 p.m. N/A 0.4 ppb (1) 4.1 ppb (4) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.19 ppb (3) 23.1 μg/m3 (22) 16.8 μg/m3 (61) 61.0
 
Jan. 13, 2021, 3 p.m. N/A 0.4 ppb (1) 3.7 ppb (4) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.21 ppb (3) 23.0 μg/m3 (22) 16.7 μg/m3 (61) 61.0
 
Jan. 13, 2021, 2 p.m. N/A 0.2 ppb (1) 3.8 ppb (4) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.18 ppb (3) 28.2 μg/m3 (27) 21.3 μg/m3 (71) 71.0
 
Jan. 13, 2021, 1 p.m. N/A 0.2 ppb (1) 3.8 ppb (4) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.19 ppb (3) 30.2 μg/m3 (28) 22.6 μg/m3 (74) 74.0
 
Jan. 13, 2021, noon N/A 0.1 ppb (1) 3.2 ppb (4) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.18 ppb (3) 24.9 μg/m3 (24) 18.2 μg/m3 (64) 64.0
 
Jan. 13, 2021, 11 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.33 ppb (4) 23.9 μg/m3 (23) 15.6 μg/m3 (59) 59.0
 
Jan. 13, 2021, 10 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) 19.6 μg/m3 (19) 13.9 μg/m3 (55) 55.0
 
Jan. 13, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.15 ppb (2) 20.7 μg/m3 (20) 15.2 μg/m3 (58) 58.0
 
Jan. 13, 2021, 8 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) 21.8 μg/m3 (21) 15.5 μg/m3 (59) 59.0
 
Jan. 13, 2021, 7 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 28.0 ppb (26) N/A 21.6 μg/m3 (20) 14.4 μg/m3 (56) 56.0
 
Jan. 13, 2021, 6 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.18 ppb (3) 20.0 μg/m3 (19) 14.3 μg/m3 (56) 56.0
 
Jan. 13, 2021, 5 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.18 ppb (3) 17.8 μg/m3 (17) 12.6 μg/m3 (53) 53.0
 
Jan. 13, 2021, 4 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.16 ppb (3) 21.0 μg/m3 (20) 14.6 μg/m3 (57) 57.0
 
Jan. 13, 2021, 3 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.13 ppb (2) 19.6 μg/m3 (19) 13.8 μg/m3 (55) 55.0
 
Jan. 13, 2021, 2 a.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.15 ppb (2) 18.5 μg/m3 (18) 13.1 μg/m3 (54) 54.0
 
Jan. 13, 2021, 1 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.2 ppb (3) 18.5 μg/m3 (18) 13.2 μg/m3 (54) 54.0
 
Jan. 13, 2021, midnight N/A 0.0 ppb (0) 2.2 ppb (3) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.17 ppb (3) 16.6 μg/m3 (16) 11.7 μg/m3 (49) 49.0
 
Jan. 12, 2021, 11 p.m. N/A 0.2 ppb (1) 2.6 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.29 ppb (4) 17.1 μg/m3 (16) 11.7 μg/m3 (49) 49.0
 
Jan. 12, 2021, 10 p.m. N/A 0.1 ppb (1) 2.2 ppb (3) N/A N/A N/A 30.0 ppb (28) 0.18 ppb (3) 17.4 μg/m3 (17) 11.0 μg/m3 (46) 46.0
 
Jan. 12, 2021, 9 p.m. N/A 0.0 ppb (0) 2.2 ppb (3) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.16 ppb (3) 13.8 μg/m3 (13) 9.6 μg/m3 (40) 40.0
 
Jan. 12, 2021, 8 p.m. N/A 0.8 ppb (1) 3.4 ppb (4) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.15 ppb (2) 12.9 μg/m3 (12) 9.2 μg/m3 (39) 39.0
 
Jan. 12, 2021, 7 p.m. N/A 2.1 ppb (2) 5.3 ppb (5) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.18 ppb (3) 17.9 μg/m3 (17) 13.0 μg/m3 (53) 53.0
 
Jan. 12, 2021, 6 p.m. N/A 4.9 ppb (5) 10.4 ppb (10) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.18 ppb (3) 21.0 μg/m3 (20) 15.9 μg/m3 (59) 59.0
 
Jan. 12, 2021, 5 p.m. N/A 5.5 ppb (6) 11.2 ppb (11) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.18 ppb (3) N/A N/A 24.0
 
Jan. 12, 2021, 4 p.m. N/A 9.8 ppb (10) 16.5 ppb (16) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.19 ppb (3) N/A N/A 25.0
 
Jan. 12, 2021, 3 p.m. N/A 0.4 ppb (1) 4.0 ppb (4) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.19 ppb (3) 19.9 μg/m3 (19) 15.8 μg/m3 (59) 59.0
 
Jan. 12, 2021, 2 p.m. N/A 0.4 ppb (1) 3.8 ppb (4) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.17 ppb (3) 23.4 μg/m3 (22) 18.1 μg/m3 (64) 64.0
 
Jan. 12, 2021, 1 p.m. N/A 0.2 ppb (1) 3.8 ppb (4) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.19 ppb (3) 20.9 μg/m3 (20) 16.4 μg/m3 (61) 61.0
 
Jan. 12, 2021, noon N/A 0.1 ppb (1) 4.3 ppb (5) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.18 ppb (3) 21.3 μg/m3 (20) 16.0 μg/m3 (60) 60.0
 
Jan. 12, 2021, 11 a.m. N/A 0.1 ppb (1) 5.0 ppb (5) N/A N/A 1.0 ppb (2) 22.0 ppb (21) 0.22 ppb (3) 29.5 μg/m3 (28) 21.6 μg/m3 (71) 71.0
 
Jan. 12, 2021, 10 a.m. N/A 0.1 ppb (1) 5.8 ppb (6) N/A N/A 1.0 ppb (2) 19.0 ppb (18) 0.21 ppb (3) 29.3 μg/m3 (28) 21.8 μg/m3 (72) 72.0
 
Jan. 12, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) 0.21 ppb (3) 37.7 μg/m3 (35) 19.1 μg/m3 (66) 66.0
 
Jan. 12, 2021, 8 a.m. N/A 0.1 ppb (1) 7.0 ppb (7) N/A N/A 1.0 ppb (2) 20.0 ppb (19) 0.21 ppb (3) 21.5 μg/m3 (20) 15.3 μg/m3 (58) 58.0
 
Jan. 12, 2021, 7 a.m. N/A 0.1 ppb (1) 7.4 ppb (7) N/A N/A 1.0 ppb (2) 19.0 ppb (18) N/A 22.7 μg/m3 (22) 17.0 μg/m3 (62) 62.0
 
Jan. 12, 2021, 6 a.m. N/A 0.1 ppb (1) 7.6 ppb (8) N/A N/A 1.0 ppb (2) 19.0 ppb (18) 0.22 ppb (3) 26.7 μg/m3 (25) 20.0 μg/m3 (68) 68.0
 
Jan. 12, 2021, 5 a.m. N/A 0.1 ppb (1) 6.9 ppb (7) N/A N/A 0.0 ppb (0) N/A 0.23 ppb (3) 37.9 μg/m3 (36) 16.2 μg/m3 (60) 60.0
 
Jan. 12, 2021, 4 a.m. N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.19 ppb (3) 16.8 μg/m3 (16) 11.2 μg/m3 (47) 47.0
 
Jan. 12, 2021, 3 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.12 ppb (2) 14.9 μg/m3 (14) 10.7 μg/m3 (45) 45.0
 
Jan. 12, 2021, 2 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.14 ppb (2) 15.4 μg/m3 (15) 10.6 μg/m3 (45) 45.0
 
Jan. 12, 2021, 1 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.15 ppb (2) 20.9 μg/m3 (20) 9.3 μg/m3 (39) 39.0
 
Jan. 12, 2021, midnight N/A 0.0 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.14 ppb (2) 10.6 μg/m3 (10) 6.8 μg/m3 (29) 36.0
 
Jan. 11, 2021, 11 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.18 ppb (3) 16.0 μg/m3 (15) 11.1 μg/m3 (47) 47.0