ID: 1021

AQSQID: 090050005

Site Name: Cornwall

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

Updated: Sept. 19, 2021, 10:57 p.m.

Location: W Cornwall (E Cornwall), CT

Reporting: True, Located: True

Current AQI: 23.0

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
Sept. 19, 2021, 9 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.15 ppb (2) 11.0 μg/m3 (11) 4.0 μg/m3 (17) 23.0
 
Sept. 19, 2021, 8 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.14 ppb (2) 10.0 μg/m3 (10) 3.7 μg/m3 (16) 25.0
 
Sept. 19, 2021, 7 p.m. N/A 0.2 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.17 ppb (3) 9.0 μg/m3 (9) 3.5 μg/m3 (15) 25.0
 
Sept. 19, 2021, 6 p.m. N/A 0.2 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.15 ppb (2) 11.0 μg/m3 (11) 3.3 μg/m3 (14) 25.0
 
Sept. 19, 2021, 5 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.14 ppb (2) 10.0 μg/m3 (10) 3.5 μg/m3 (15) 25.0
 
Sept. 19, 2021, 4 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.16 ppb (3) 9.0 μg/m3 (9) 3.6 μg/m3 (16) 25.0
 
Sept. 19, 2021, 3 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.18 ppb (3) 10.0 μg/m3 (10) 3.9 μg/m3 (17) 25.0
 
Sept. 19, 2021, 2 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.15 ppb (2) 10.0 μg/m3 (10) 3.9 μg/m3 (17) 24.0
 
Sept. 19, 2021, 1 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.1 ppb (2) 11.0 μg/m3 (11) 4.2 μg/m3 (18) 24.0
 
Sept. 19, 2021, noon N/A 0.2 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.12 ppb (2) 13.0 μg/m3 (13) 4.7 μg/m3 (20) 23.0
 
Sept. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.14 ppb (2) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 23.0
 
Sept. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.15 ppb (2) 13.0 μg/m3 (13) 5.3 μg/m3 (23) 25.0
 
Sept. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.25 ppb (3) 14.0 μg/m3 (13) 5.5 μg/m3 (23) 26.0
 
Sept. 19, 2021, 8 a.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.23 ppb (3) 15.0 μg/m3 (14) 5.7 μg/m3 (24) 28.0
 
Sept. 19, 2021, 7 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A 14.0 μg/m3 (13) 6.2 μg/m3 (26) 30.0
 
Sept. 19, 2021, 6 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A 16.0 μg/m3 (15) 6.8 μg/m3 (29) 29.0
 
Sept. 19, 2021, 5 a.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.02 ppb (0) 15.0 μg/m3 (14) 7.5 μg/m3 (32) 32.0
 
Sept. 19, 2021, 4 a.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.03 ppb (0) 15.0 μg/m3 (14) 8.0 μg/m3 (34) 34.0
 
Sept. 19, 2021, 3 a.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.05 ppb (2) 15.0 μg/m3 (14) 8.3 μg/m3 (35) 35.0
 
Sept. 19, 2021, 2 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.09 ppb (2) 16.0 μg/m3 (15) 8.9 μg/m3 (38) 38.0
 
Sept. 19, 2021, 1 a.m. N/A 0.1 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.15 ppb (2) 17.0 μg/m3 (16) 10.6 μg/m3 (45) 45.0
 
Sept. 19, 2021, midnight N/A 0.1 ppb (1) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.11 ppb (2) 17.0 μg/m3 (16) 10.3 μg/m3 (43) 43.0
 
Sept. 18, 2021, 11 p.m. N/A 0.1 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.11 ppb (2) 15.0 μg/m3 (14) 9.4 μg/m3 (40) 40.0
 
Sept. 18, 2021, 10 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A N/A 42.0 ppb (39) 0.14 ppb (2) 15.0 μg/m3 (14) 8.8 μg/m3 (37) 39.0
 
Sept. 18, 2021, 9 p.m. N/A 0.1 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.21 ppb (3) 13.0 μg/m3 (13) 7.9 μg/m3 (33) 40.0
 
Sept. 18, 2021, 8 p.m. N/A 0.2 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.3 ppb (4) 12.0 μg/m3 (12) 7.2 μg/m3 (31) 39.0
 
Sept. 18, 2021, 7 p.m. N/A 0.2 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.18 ppb (3) 12.0 μg/m3 (12) 7.2 μg/m3 (31) 38.0
 
Sept. 18, 2021, 6 p.m. N/A 0.2 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.16 ppb (3) 11.0 μg/m3 (11) 6.8 μg/m3 (29) 29.0
 
Sept. 18, 2021, 5 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.12 ppb (2) 13.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
Sept. 18, 2021, 4 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.09 ppb (2) 12.0 μg/m3 (12) 6.6 μg/m3 (28) 31.0
 
Sept. 18, 2021, 3 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.08 ppb (2) 11.0 μg/m3 (11) 6.4 μg/m3 (27) 30.0
 
Sept. 18, 2021, 2 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.15 ppb (2) 10.0 μg/m3 (10) 5.9 μg/m3 (25) 28.0
 
Sept. 18, 2021, 1 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.16 ppb (3) 10.0 μg/m3 (10) 5.4 μg/m3 (23) 24.0
 
Sept. 18, 2021, noon N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.16 ppb (3) 6.0 μg/m3 (6) 3.9 μg/m3 (17) 21.0
 
Sept. 18, 2021, 11 a.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 18.0 ppb (17) 0.16 ppb (3) 3.0 μg/m3 (3) 1.7 μg/m3 (8) 17.0
 
Sept. 18, 2021, 10 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.15 ppb (2) 7.0 μg/m3 (7) 4.0 μg/m3 (17) 26.0
 
Sept. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.21 ppb (3) 6.0 μg/m3 (6) 2.9 μg/m3 (13) 23.0
 
Sept. 18, 2021, 8 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.17 ppb (3) 2.0 μg/m3 (2) 1.8 μg/m3 (8) 24.0
 
Sept. 18, 2021, 7 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (25) N/A 4.0 μg/m3 (4) 2.7 μg/m3 (12) 25.0
 
Sept. 18, 2021, 6 a.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A 5.0 μg/m3 (5) 2.9 μg/m3 (13) 23.0
 
Sept. 18, 2021, 5 a.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.14 ppb (2) 5.0 μg/m3 (5) 3.8 μg/m3 (16) 16.0
 
Sept. 18, 2021, 4 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.14 ppb (2) 5.0 μg/m3 (5) 3.9 μg/m3 (17) 24.0
 
Sept. 18, 2021, 3 a.m. N/A 0.1 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.15 ppb (2) 5.0 μg/m3 (5) 3.6 μg/m3 (16) 20.0
 
Sept. 18, 2021, 2 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 20.0 ppb (19) 0.16 ppb (3) 5.0 μg/m3 (5) 3.8 μg/m3 (16) 19.0
 
Sept. 18, 2021, 1 a.m. N/A 0.1 ppb (1) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 20.0 ppb (19) 0.16 ppb (3) 8.0 μg/m3 (8) 4.9 μg/m3 (21) 21.0
 
Sept. 18, 2021, midnight N/A 0.1 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.14 ppb (2) 13.0 μg/m3 (13) 7.4 μg/m3 (31) 31.0
 
Sept. 17, 2021, 11 p.m. N/A 0.1 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.15 ppb (2) 18.0 μg/m3 (17) 9.5 μg/m3 (40) 40.0
 
Sept. 17, 2021, 10 p.m. N/A 0.1 ppb (1) 1.6 ppb (2) N/A N/A N/A 27.0 ppb (25) 0.17 ppb (3) 15.0 μg/m3 (14) 8.7 μg/m3 (37) 37.0
 
Sept. 17, 2021, 9 p.m. N/A 0.1 ppb (1) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.17 ppb (3) 15.0 μg/m3 (14) 8.6 μg/m3 (36) 36.0
 
Sept. 17, 2021, 8 p.m. N/A 0.1 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.16 ppb (3) 13.0 μg/m3 (13) 7.7 μg/m3 (33) 33.0
 
Sept. 17, 2021, 7 p.m. N/A 0.1 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.16 ppb (3) 12.0 μg/m3 (12) 7.6 μg/m3 (32) 34.0
 
Sept. 17, 2021, 6 p.m. N/A 0.1 ppb (1) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.16 ppb (3) 12.0 μg/m3 (12) 7.7 μg/m3 (33) 33.0
 
Sept. 17, 2021, 5 p.m. N/A 0.2 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) 13.0 μg/m3 (13) 7.7 μg/m3 (33) 33.0
 
Sept. 17, 2021, 4 p.m. N/A 0.2 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.16 ppb (3) 11.0 μg/m3 (11) 6.8 μg/m3 (29) 29.0
 
Sept. 17, 2021, 3 p.m. N/A 0.2 ppb (1) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.15 ppb (2) 7.0 μg/m3 (7) 5.0 μg/m3 (21) 26.0
 
Sept. 17, 2021, 2 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.15 ppb (2) 5.0 μg/m3 (5) 3.7 μg/m3 (16) 26.0
 
Sept. 17, 2021, 1 p.m. N/A 0.2 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.14 ppb (2) 2.0 μg/m3 (2) 2.4 μg/m3 (10) 27.0
 
Sept. 17, 2021, noon N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.13 ppb (2) 2.0 μg/m3 (2) 2.0 μg/m3 (9) 28.0
 
Sept. 17, 2021, 11 a.m. N/A 0.1 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.11 ppb (2) 2.0 μg/m3 (2) 1.6 μg/m3 (7) 25.0
 
Sept. 17, 2021, 10 a.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.11 ppb (2) 2.0 μg/m3 (2) 2.0 μg/m3 (9) 26.0
 
Sept. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.26 ppb (4) 3.0 μg/m3 (3) 2.8 μg/m3 (12) 29.0
 
Sept. 17, 2021, 8 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.15 ppb (2) 4.0 μg/m3 (4) 3.7 μg/m3 (16) 30.0
 
Sept. 17, 2021, 7 a.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A 8.0 μg/m3 (8) 5.3 μg/m3 (23) 32.0
 
Sept. 17, 2021, 6 a.m. N/A 0.1 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A 7.0 μg/m3 (7) 4.9 μg/m3 (21) 31.0
 
Sept. 17, 2021, 5 a.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (2) 5.0 μg/m3 (5) 3.8 μg/m3 (16) 16.0
 
Sept. 17, 2021, 4 a.m. N/A 0.1 ppb (1) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.16 ppb (3) 6.0 μg/m3 (6) 4.3 μg/m3 (18) 29.0
 
Sept. 17, 2021, 3 a.m. N/A 0.1 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.15 ppb (2) 10.0 μg/m3 (10) 6.6 μg/m3 (28) 32.0
 
Sept. 17, 2021, 2 a.m. N/A 0.1 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.16 ppb (3) 13.0 μg/m3 (13) 7.4 μg/m3 (31) 36.0
 
Sept. 17, 2021, 1 a.m. N/A 0.1 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.13 ppb (2) 15.0 μg/m3 (14) 6.7 μg/m3 (28) 36.0
 
Sept. 17, 2021, midnight N/A 0.1 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.13 ppb (2) 11.0 μg/m3 (11) 6.1 μg/m3 (26) 36.0
 
Sept. 16, 2021, 11 p.m. N/A 0.1 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.13 ppb (2) 12.0 μg/m3 (12) 5.7 μg/m3 (24) 39.0
 
Sept. 16, 2021, 10 p.m. N/A 0.1 ppb (1) 1.7 ppb (2) N/A N/A N/A 44.0 ppb (41) 0.14 ppb (2) 11.0 μg/m3 (11) 5.6 μg/m3 (24) 41.0
 
Sept. 16, 2021, 9 p.m. N/A 0.1 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.18 ppb (3) 12.0 μg/m3 (12) 6.0 μg/m3 (25) 42.0
 
Sept. 16, 2021, 8 p.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.16 ppb (3) 11.0 μg/m3 (11) 5.3 μg/m3 (23) 44.0
 
Sept. 16, 2021, 7 p.m. N/A 0.1 ppb (1) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.15 ppb (2) 9.0 μg/m3 (9) 4.5 μg/m3 (19) 44.0
 
Sept. 16, 2021, 6 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.14 ppb (2) 9.0 μg/m3 (9) 4.7 μg/m3 (20) 38.0
 
Sept. 16, 2021, 5 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.15 ppb (2) 9.0 μg/m3 (9) 4.6 μg/m3 (20) 37.0
 
Sept. 16, 2021, 4 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.13 ppb (2) 8.0 μg/m3 (8) 4.3 μg/m3 (18) 37.0
 
Sept. 16, 2021, 3 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.13 ppb (2) 7.0 μg/m3 (7) 3.9 μg/m3 (17) 35.0
 
Sept. 16, 2021, 2 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.14 ppb (2) 8.0 μg/m3 (8) 3.9 μg/m3 (17) 32.0
 
Sept. 16, 2021, 1 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) 8.0 μg/m3 (8) 3.8 μg/m3 (16) 31.0
 
Sept. 16, 2021, noon N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) 8.0 μg/m3 (8) 3.5 μg/m3 (15) 33.0
 
Sept. 16, 2021, 11 a.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.11 ppb (2) 6.0 μg/m3 (6) 3.2 μg/m3 (14) 35.0
 
Sept. 16, 2021, 10 a.m. N/A 0.2 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.11 ppb (2) 6.0 μg/m3 (6) 3.1 μg/m3 (13) 38.0
 
Sept. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.13 ppb (2) 5.0 μg/m3 (5) 2.9 μg/m3 (13) 45.0
 
Sept. 16, 2021, 8 a.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.09 ppb (2) 9.0 μg/m3 (9) 4.0 μg/m3 (17) 44.0
 
Sept. 16, 2021, 7 a.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A 11.0 μg/m3 (11) 5.6 μg/m3 (24) 40.0
 
Sept. 16, 2021, 6 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A 13.0 μg/m3 (13) 7.0 μg/m3 (30) 36.0
 
Sept. 16, 2021, 5 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) 13.0 μg/m3 (13) 6.8 μg/m3 (29) 29.0
 
Sept. 16, 2021, 4 a.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.14 ppb (2) 10.0 μg/m3 (10) 5.6 μg/m3 (24) 33.0
 
Sept. 16, 2021, 3 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.13 ppb (2) 9.0 μg/m3 (9) 5.5 μg/m3 (23) 42.0
 
Sept. 16, 2021, 2 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.13 ppb (2) 9.0 μg/m3 (9) 5.1 μg/m3 (22) 43.0
 
Sept. 16, 2021, 1 a.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.11 ppb (2) 9.0 μg/m3 (9) 5.3 μg/m3 (23) 41.0
 
Sept. 16, 2021, midnight N/A 0.1 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.13 ppb (2) 12.0 μg/m3 (12) 7.0 μg/m3 (30) 41.0
 
Sept. 15, 2021, 11 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.16 ppb (3) 17.0 μg/m3 (16) 11.7 μg/m3 (49) 49.0
 
Sept. 15, 2021, 10 p.m. N/A 0.0 ppb (0) 3.7 ppb (4) N/A N/A N/A 65.0 ppb (84) 0.25 ppb (3) 29.0 μg/m3 (27) 20.3 μg/m3 (69) 84.0
 
Sept. 15, 2021, 9 p.m. N/A 0.1 ppb (1) 5.1 ppb (5) N/A N/A 0.0 ppb (0) 79.0 ppb (106) 0.28 ppb (4) 33.0 μg/m3 (31) 22.7 μg/m3 (74) 106.0
 
Sept. 15, 2021, 8 p.m. N/A 0.1 ppb (1) 4.3 ppb (5) N/A N/A 0.0 ppb (0) 78.0 ppb (105) 0.27 ppb (4) 32.0 μg/m3 (30) 21.4 μg/m3 (71) 105.0
 
Sept. 15, 2021, 7 p.m. N/A 0.1 ppb (1) 4.7 ppb (5) N/A N/A 0.0 ppb (0) 75.0 ppb (104) 0.28 ppb (4) 32.0 μg/m3 (30) 21.5 μg/m3 (71) 104.0
 
Sept. 15, 2021, 6 p.m. N/A 0.3 ppb (1) 5.9 ppb (6) N/A N/A 0.0 ppb (0) 70.0 ppb (100) 0.31 ppb (4) 29.0 μg/m3 (27) 21.0 μg/m3 (70) 100.0
 
Sept. 15, 2021, 5 p.m. N/A 0.3 ppb (1) 5.0 ppb (5) N/A N/A 0.0 ppb (0) 61.0 ppb (71) 0.28 ppb (4) 28.0 μg/m3 (26) 20.8 μg/m3 (70) 71.0
 
Sept. 15, 2021, 4 p.m. N/A 0.2 ppb (1) 3.5 ppb (4) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.25 ppb (3) 29.0 μg/m3 (27) 20.1 μg/m3 (68) 68.0
 
Sept. 15, 2021, 3 p.m. N/A 0.2 ppb (1) 3.7 ppb (4) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.37 ppb (5) 28.0 μg/m3 (26) 20.9 μg/m3 (70) 70.0
 
Sept. 15, 2021, 2 p.m. N/A 0.3 ppb (1) 4.1 ppb (4) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.24 ppb (3) 29.0 μg/m3 (27) 21.5 μg/m3 (71) 71.0
 
Sept. 15, 2021, 1 p.m. N/A 0.2 ppb (1) 3.6 ppb (4) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.24 ppb (3) 29.0 μg/m3 (27) 21.7 μg/m3 (72) 72.0
 
Sept. 15, 2021, noon N/A 0.1 ppb (1) 2.4 ppb (3) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.25 ppb (3) 22.0 μg/m3 (21) 18.6 μg/m3 (65) 65.0
 
Sept. 15, 2021, 11 a.m. N/A 0.1 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.23 ppb (3) 19.0 μg/m3 (18) 16.8 μg/m3 (61) 61.0
 
Sept. 15, 2021, 10 a.m. N/A 0.1 ppb (1) 2.4 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.22 ppb (3) 22.0 μg/m3 (21) 19.1 μg/m3 (66) 66.0
 
Sept. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.28 ppb (4) 23.0 μg/m3 (22) 20.0 μg/m3 (68) 68.0
 
Sept. 15, 2021, 8 a.m. N/A 0.1 ppb (1) 2.3 ppb (3) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.25 ppb (3) 21.0 μg/m3 (20) 18.4 μg/m3 (65) 65.0
 
Sept. 15, 2021, 7 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A 18.0 μg/m3 (17) 15.8 μg/m3 (59) 59.0
 
Sept. 15, 2021, 6 a.m. N/A 0.1 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A 9.0 μg/m3 (9) 7.6 μg/m3 (32) 38.0
 
Sept. 15, 2021, 5 a.m. N/A 0.1 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.19 ppb (3) 7.0 μg/m3 (7) 5.2 μg/m3 (22) 22.0
 
Sept. 15, 2021, 4 a.m. N/A 0.1 ppb (1) 2.2 ppb (3) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.18 ppb (3) 11.0 μg/m3 (11) 6.7 μg/m3 (28) 33.0
 
Sept. 15, 2021, 3 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.18 ppb (3) 11.0 μg/m3 (11) 6.1 μg/m3 (26) 34.0
 
Sept. 15, 2021, 2 a.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.19 ppb (3) 11.0 μg/m3 (11) 5.8 μg/m3 (25) 34.0
 
Sept. 15, 2021, 1 a.m. N/A 0.1 ppb (1) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.18 ppb (3) 12.0 μg/m3 (12) 5.8 μg/m3 (25) 34.0
 
Sept. 15, 2021, midnight N/A 0.2 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.18 ppb (3) 12.0 μg/m3 (12) 5.9 μg/m3 (25) 36.0
 
Sept. 14, 2021, 11 p.m. N/A 0.1 ppb (1) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.17 ppb (3) 13.0 μg/m3 (13) 6.1 μg/m3 (26) 38.0
 
Sept. 14, 2021, 10 p.m. N/A 0.1 ppb (1) 2.6 ppb (3) N/A N/A N/A 43.0 ppb (40) 0.18 ppb (3) 14.0 μg/m3 (13) 5.8 μg/m3 (25) 40.0
 
Sept. 14, 2021, 9 p.m. N/A 0.1 ppb (1) 2.1 ppb (2) N/A N/A 1.0 ppb (2) 44.0 ppb (41) 0.19 ppb (3) 11.0 μg/m3 (11) 5.6 μg/m3 (24) 41.0
 
Sept. 14, 2021, 8 p.m. N/A 0.1 ppb (1) 2.3 ppb (3) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.19 ppb (3) 12.0 μg/m3 (12) 5.6 μg/m3 (24) 44.0
 
Sept. 14, 2021, 7 p.m. N/A 0.1 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.18 ppb (3) 10.0 μg/m3 (10) 5.0 μg/m3 (21) 39.0
 
Sept. 14, 2021, 6 p.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.17 ppb (3) 10.0 μg/m3 (10) 5.0 μg/m3 (21) 38.0
 
Sept. 14, 2021, 5 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.22 ppb (3) N/A N/A 35.0
 
Sept. 14, 2021, 4 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.21 ppb (3) 8.0 μg/m3 (8) 4.2 μg/m3 (18) 34.0
 
Sept. 14, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.21 ppb (3) 9.0 μg/m3 (9) 3.9 μg/m3 (17) 32.0
 
Sept. 14, 2021, 2 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.17 ppb (3) 7.0 μg/m3 (7) 3.7 μg/m3 (16) 30.0
 
Sept. 14, 2021, 1 p.m. N/A 0.1 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.09 ppb (2) 9.0 μg/m3 (9) 3.8 μg/m3 (16) 27.0
 
Sept. 14, 2021, noon N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.15 ppb (2) 8.0 μg/m3 (8) 3.8 μg/m3 (16) 26.0
 
Sept. 14, 2021, 11 a.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.15 ppb (2) 8.0 μg/m3 (8) 3.7 μg/m3 (16) 34.0
 
Sept. 14, 2021, 10 a.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.16 ppb (3) 9.0 μg/m3 (9) 3.8 μg/m3 (16) 31.0
 
Sept. 14, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.16 ppb (3) 7.0 μg/m3 (7) 3.7 μg/m3 (16) 32.0
 
Sept. 14, 2021, 8 a.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.13 ppb (2) 8.0 μg/m3 (8) 3.5 μg/m3 (15) 32.0
 
Sept. 14, 2021, 7 a.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A 8.0 μg/m3 (8) 3.7 μg/m3 (16) 29.0
 
Sept. 14, 2021, 6 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A 10.0 μg/m3 (10) 3.8 μg/m3 (16) 28.0
 
Sept. 14, 2021, 5 a.m. N/A 0.1 ppb (1) 1.1 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) 10.0 μg/m3 (10) 4.2 μg/m3 (18) 18.0
 
Sept. 14, 2021, 4 a.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.14 ppb (2) 8.0 μg/m3 (8) 3.9 μg/m3 (17) 29.0
 
Sept. 14, 2021, 3 a.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.14 ppb (2) 8.0 μg/m3 (8) 3.8 μg/m3 (16) 30.0
 
Sept. 14, 2021, 2 a.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.15 ppb (2) 9.0 μg/m3 (9) 3.9 μg/m3 (17) 30.0
 
Sept. 14, 2021, 1 a.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) 9.0 μg/m3 (9) 4.0 μg/m3 (17) 32.0
 
Sept. 14, 2021, midnight N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.14 ppb (2) 9.0 μg/m3 (9) 4.0 μg/m3 (17) 34.0
 
Sept. 13, 2021, 11 p.m. N/A 0.2 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.14 ppb (2) 10.0 μg/m3 (10) 4.0 μg/m3 (17) 38.0
 
Sept. 13, 2021, 10 p.m. N/A 0.3 ppb (1) 1.1 ppb (2) N/A N/A N/A 40.0 ppb (38) 0.16 ppb (3) 9.0 μg/m3 (9) 4.1 μg/m3 (18) 38.0
 
Sept. 13, 2021, 9 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.17 ppb (3) 9.0 μg/m3 (9) 4.3 μg/m3 (18) 39.0
 
Sept. 13, 2021, 8 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.18 ppb (3) 8.0 μg/m3 (8) 4.6 μg/m3 (20) 41.0
 
Sept. 13, 2021, 7 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.17 ppb (3) 10.0 μg/m3 (10) 5.0 μg/m3 (21) 41.0
 
Sept. 13, 2021, 6 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.15 ppb (2) 9.0 μg/m3 (9) 5.3 μg/m3 (23) 40.0
 
Sept. 13, 2021, 5 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) 11.0 μg/m3 (11) 5.2 μg/m3 (22) 41.0
 
Sept. 13, 2021, 4 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.13 ppb (2) 9.0 μg/m3 (9) 4.8 μg/m3 (20) 41.0
 
Sept. 13, 2021, 3 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.13 ppb (2) 9.0 μg/m3 (9) 5.0 μg/m3 (21) 42.0
 
Sept. 13, 2021, 2 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.14 ppb (2) 9.0 μg/m3 (9) 4.7 μg/m3 (20) 40.0
 
Sept. 13, 2021, 1 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.15 ppb (2) 7.0 μg/m3 (7) 4.2 μg/m3 (18) 40.0
 
Sept. 13, 2021, noon N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.18 ppb (3) 7.0 μg/m3 (7) 3.9 μg/m3 (17) 38.0
 
Sept. 13, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.21 ppb (3) 11.0 μg/m3 (11) 6.4 μg/m3 (27) 35.0
 
Sept. 13, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.24 ppb (3) 22.0 μg/m3 (21) 12.4 μg/m3 (52) 52.0
 
Sept. 13, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.23 ppb (3) 23.0 μg/m3 (22) 13.0 μg/m3 (53) 53.0
 
Sept. 13, 2021, 8 a.m. N/A 0.1 ppb (1) 2.2 ppb (3) N/A N/A 1.0 ppb (2) 39.0 ppb (37) 0.19 ppb (3) 23.0 μg/m3 (22) 12.4 μg/m3 (52) 52.0
 
Sept. 13, 2021, 7 a.m. N/A 0.1 ppb (1) 2.4 ppb (3) N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A 24.0 μg/m3 (23) 13.0 μg/m3 (53) 53.0
 
Sept. 13, 2021, 6 a.m. N/A 0.1 ppb (1) 2.3 ppb (3) N/A N/A 1.0 ppb (2) 43.0 ppb (40) N/A 22.0 μg/m3 (21) 12.1 μg/m3 (51) 51.0
 
Sept. 13, 2021, 5 a.m. N/A 0.1 ppb (1) 2.1 ppb (2) N/A N/A 1.0 ppb (2) N/A 0.22 ppb (3) 26.0 μg/m3 (25) 12.8 μg/m3 (53) 53.0
 
Sept. 13, 2021, 4 a.m. N/A 0.1 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.2 ppb (3) 23.0 μg/m3 (22) 12.7 μg/m3 (53) 53.0
 
Sept. 13, 2021, 3 a.m. N/A 0.1 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.21 ppb (3) 22.0 μg/m3 (21) 12.3 μg/m3 (52) 52.0
 
Sept. 13, 2021, 2 a.m. N/A 0.1 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.21 ppb (3) 25.0 μg/m3 (24) 13.0 μg/m3 (53) 53.0
 
Sept. 13, 2021, 1 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.19 ppb (3) 22.0 μg/m3 (21) 12.3 μg/m3 (52) 52.0
 
Sept. 13, 2021, midnight N/A 0.1 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.19 ppb (3) 24.0 μg/m3 (23) 12.7 μg/m3 (53) 53.0
 
Sept. 12, 2021, 11 p.m. N/A 0.1 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.2 ppb (3) 21.0 μg/m3 (20) 11.5 μg/m3 (48) 48.0
 
Sept. 12, 2021, 10 p.m. N/A 0.1 ppb (1) 1.8 ppb (2) N/A N/A N/A 47.0 ppb (44) 0.22 ppb (3) 21.0 μg/m3 (20) 10.7 μg/m3 (45) 45.0