ID: 1021

AQSQID: 090050005

Site Name: Cornwall

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

Updated: April 10, 2021, 11:42 a.m.

Location: W Cornwall (E Cornwall), CT

Reporting: True, Located: True

Current AQI: 35.0

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
April 10, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.13 ppb (2) 7.6 μg/m3 (8) 3.5 μg/m3 (15) 35.0
 
April 10, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.14 ppb (2) 6.5 μg/m3 (7) 3.3 μg/m3 (14) 38.0
 
April 10, 2021, 8 a.m. N/A -0.1 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.13 ppb (2) 7.4 μg/m3 (7) 3.0 μg/m3 (13) 38.0
 
April 10, 2021, 7 a.m. N/A -0.2 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A 5.3 μg/m3 (5) 2.0 μg/m3 (9) 39.0
 
April 10, 2021, 6 a.m. N/A -0.2 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.15 ppb (2) 7.6 μg/m3 (8) 2.8 μg/m3 (12) 38.0
 
April 10, 2021, 5 a.m. N/A -0.1 ppb (0) 2.3 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.17 ppb (3) 8.7 μg/m3 (9) 3.9 μg/m3 (17) 17.0
 
April 10, 2021, 4 a.m. N/A -0.1 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.18 ppb (3) 10.0 μg/m3 (10) 3.9 μg/m3 (17) 33.0
 
April 10, 2021, 3 a.m. N/A -0.1 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.17 ppb (3) 8.8 μg/m3 (9) 3.7 μg/m3 (16) 36.0
 
April 10, 2021, 2 a.m. N/A -0.1 ppb (0) 3.5 ppb (4) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.18 ppb (3) 10.8 μg/m3 (10) 4.1 μg/m3 (18) 35.0
 
April 10, 2021, 1 a.m. N/A -0.1 ppb (0) 3.7 ppb (4) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.16 ppb (3) 10.1 μg/m3 (10) 4.1 μg/m3 (18) 37.0
 
April 10, 2021, midnight N/A 0.0 ppb (0) 3.5 ppb (4) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.16 ppb (3) 9.3 μg/m3 (9) 4.2 μg/m3 (18) 38.0
 
April 9, 2021, 11 p.m. N/A -0.1 ppb (0) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.15 ppb (2) 9.4 μg/m3 (9) 3.1 μg/m3 (13) 41.0
 
April 9, 2021, 10 p.m. N/A -0.1 ppb (0) 1.4 ppb (2) N/A N/A N/A 45.0 ppb (42) 0.13 ppb (2) 9.3 μg/m3 (9) 2.8 μg/m3 (12) 42.0
 
April 9, 2021, 9 p.m. N/A -0.1 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.14 ppb (2) 8.1 μg/m3 (8) 3.2 μg/m3 (14) 43.0
 
April 9, 2021, 8 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.14 ppb (2) 9.0 μg/m3 (9) 3.4 μg/m3 (15) 45.0
 
April 9, 2021, 7 p.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 49.0 ppb (46) 0.14 ppb (2) 7.8 μg/m3 (8) 2.7 μg/m3 (12) 46.0
 
April 9, 2021, 6 p.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.13 ppb (2) 6.8 μg/m3 (7) 2.3 μg/m3 (10) 45.0
 
April 9, 2021, 5 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.14 ppb (2) 5.8 μg/m3 (6) 2.3 μg/m3 (10) 44.0
 
April 9, 2021, 4 p.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) 6.6 μg/m3 (7) 2.2 μg/m3 (10) 43.0
 
April 9, 2021, 3 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.14 ppb (2) 4.4 μg/m3 (5) 2.4 μg/m3 (10) 42.0
 
April 9, 2021, 2 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) 6.5 μg/m3 (7) 2.4 μg/m3 (10) 41.0
 
April 9, 2021, 1 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.13 ppb (2) 6.3 μg/m3 (6) 2.5 μg/m3 (11) 39.0
 
April 9, 2021, noon N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.12 ppb (2) 6.1 μg/m3 (6) 2.5 μg/m3 (11) 38.0
 
April 9, 2021, 11 a.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.13 ppb (2) 3.3 μg/m3 (4) 2.1 μg/m3 (9) 39.0
 
April 9, 2021, 10 a.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.13 ppb (2) 2.8 μg/m3 (3) 1.3 μg/m3 (6) 40.0
 
April 9, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.16 ppb (3) 3.3 μg/m3 (4) 1.9 μg/m3 (8) 38.0
 
April 9, 2021, 8 a.m. N/A -0.1 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.15 ppb (2) 4.3 μg/m3 (4) 2.6 μg/m3 (11) 38.0
 
April 9, 2021, 7 a.m. N/A -0.1 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A 3.9 μg/m3 (4) 2.5 μg/m3 (11) 38.0
 
April 9, 2021, 6 a.m. N/A -0.1 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.13 ppb (2) 4.8 μg/m3 (5) 2.9 μg/m3 (13) 38.0
 
April 9, 2021, 5 a.m. N/A -0.1 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.17 ppb (3) 5.6 μg/m3 (6) 3.0 μg/m3 (13) 13.0
 
April 9, 2021, 4 a.m. N/A -0.1 ppb (0) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.17 ppb (3) 8.2 μg/m3 (8) 4.2 μg/m3 (18) 37.0
 
April 9, 2021, 3 a.m. N/A -0.1 ppb (0) 2.6 ppb (3) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.1 ppb (2) 10.0 μg/m3 (10) 4.0 μg/m3 (17) 38.0
 
April 9, 2021, 2 a.m. N/A -0.2 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.14 ppb (2) 8.4 μg/m3 (8) 3.5 μg/m3 (15) 40.0
 
April 9, 2021, 1 a.m. N/A -0.2 ppb (0) 2.4 ppb (3) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.17 ppb (3) 9.1 μg/m3 (9) 3.6 μg/m3 (16) 41.0
 
April 9, 2021, midnight N/A 0.0 ppb (0) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 49.0 ppb (46) 0.17 ppb (3) 10.1 μg/m3 (10) 3.4 μg/m3 (15) 46.0
 
April 8, 2021, 11 p.m. N/A -0.1 ppb (0) 2.4 ppb (3) N/A N/A 0.0 ppb (0) 54.0 ppb (50) 0.16 ppb (3) 15.7 μg/m3 (15) 3.4 μg/m3 (15) 50.0
 
April 8, 2021, 10 p.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A N/A N/A 53.0 ppb (50) 0.15 ppb (2) 9.3 μg/m3 (9) 2.9 μg/m3 (13) 50.0
 
April 8, 2021, 9 p.m. N/A -0.1 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.16 ppb (3) 8.2 μg/m3 (8) 2.4 μg/m3 (10) 48.0
 
April 8, 2021, 8 p.m. N/A -0.1 ppb (0) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.14 ppb (2) 6.7 μg/m3 (7) 2.1 μg/m3 (9) 47.0
 
April 8, 2021, 7 p.m. N/A -0.1 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.15 ppb (2) 5.9 μg/m3 (6) 2.2 μg/m3 (10) 47.0
 
April 8, 2021, 6 p.m. N/A -0.1 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.15 ppb (2) 5.8 μg/m3 (6) 2.1 μg/m3 (9) 47.0
 
April 8, 2021, 5 p.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 49.0 ppb (46) 0.14 ppb (2) 5.0 μg/m3 (5) 2.4 μg/m3 (10) 46.0
 
April 8, 2021, 4 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.14 ppb (2) 7.2 μg/m3 (7) 2.3 μg/m3 (10) 44.0
 
April 8, 2021, 3 p.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.15 ppb (2) 5.5 μg/m3 (6) 2.4 μg/m3 (10) 43.0
 
April 8, 2021, 2 p.m. N/A 0.1 ppb (1) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.15 ppb (2) 8.2 μg/m3 (8) 3.1 μg/m3 (13) 41.0
 
April 8, 2021, 1 p.m. N/A 0.2 ppb (1) 2.6 ppb (3) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.17 ppb (3) 10.1 μg/m3 (10) 3.5 μg/m3 (15) 41.0
 
April 8, 2021, noon N/A 0.1 ppb (1) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.16 ppb (3) 9.1 μg/m3 (9) 3.7 μg/m3 (16) 40.0
 
April 8, 2021, 11 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.17 ppb (3) 8.7 μg/m3 (9) 4.0 μg/m3 (17) 40.0
 
April 8, 2021, 10 a.m. N/A -0.2 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.16 ppb (3) 7.4 μg/m3 (7) 3.5 μg/m3 (15) 40.0
 
April 8, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) 6.5 μg/m3 (7) 2.9 μg/m3 (13) 41.0
 
April 8, 2021, 8 a.m. N/A -0.1 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.15 ppb (2) 5.2 μg/m3 (5) 2.4 μg/m3 (10) 39.0
 
April 8, 2021, 7 a.m. N/A -0.1 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A 6.2 μg/m3 (6) 2.8 μg/m3 (12) 41.0
 
April 8, 2021, 6 a.m. N/A -0.1 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.16 ppb (3) 4.2 μg/m3 (4) 2.0 μg/m3 (9) 43.0
 
April 8, 2021, 5 a.m. N/A -0.1 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.13 ppb (2) 6.5 μg/m3 (7) 2.4 μg/m3 (10) 10.0
 
April 8, 2021, 4 a.m. N/A -0.1 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.11 ppb (2) 8.1 μg/m3 (8) 3.3 μg/m3 (14) 43.0
 
April 8, 2021, 3 a.m. N/A -0.2 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.14 ppb (2) 8.8 μg/m3 (9) 3.7 μg/m3 (16) 43.0
 
April 8, 2021, 2 a.m. N/A -0.1 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.16 ppb (3) 10.2 μg/m3 (10) 4.0 μg/m3 (17) 43.0
 
April 8, 2021, 1 a.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.22 ppb (3) 12.8 μg/m3 (12) 3.9 μg/m3 (17) 43.0
 
April 8, 2021, midnight N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.16 ppb (3) 6.8 μg/m3 (7) 3.2 μg/m3 (14) 41.0
 
April 7, 2021, 11 p.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.34 ppb (4) 10.2 μg/m3 (10) 5.0 μg/m3 (21) 41.0
 
April 7, 2021, 10 p.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A N/A 43.0 ppb (40) 0.17 ppb (3) 7.3 μg/m3 (7) 3.0 μg/m3 (13) 40.0
 
April 7, 2021, 9 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.16 ppb (3) 7.9 μg/m3 (8) 2.6 μg/m3 (11) 40.0
 
April 7, 2021, 8 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.16 ppb (3) 8.1 μg/m3 (8) 3.4 μg/m3 (15) 40.0
 
April 7, 2021, 7 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.18 ppb (3) 8.9 μg/m3 (9) 3.4 μg/m3 (15) 40.0
 
April 7, 2021, 6 p.m. N/A 0.1 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.23 ppb (3) 22.4 μg/m3 (21) 12.8 μg/m3 (53) 53.0
 
April 7, 2021, 5 p.m. N/A 0.2 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.29 ppb (4) 39.8 μg/m3 (37) 27.4 μg/m3 (84) 84.0
 
April 7, 2021, 4 p.m. N/A 2.0 ppb (2) 6.1 ppb (6) N/A N/A 1.0 ppb (2) 36.0 ppb (34) 0.37 ppb (5) 91.2 μg/m3 (69) 66.7 μg/m3 (157) 157.0
 
April 7, 2021, 3 p.m. N/A 27.7 ppb (27) 50.9 ppb (49) N/A N/A 7.0 ppb (10) 66.0 ppb (87) 2.84 ppb (32) N/A N/A 87.0
 
April 7, 2021, 2 p.m. N/A 28.5 ppb (27) 49.8 ppb (47) N/A N/A 4.0 ppb (6) 53.0 ppb (50) 1.33 ppb (15) N/A N/A 50.0
 
April 7, 2021, 1 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.14 ppb (2) 7.9 μg/m3 (8) 3.0 μg/m3 (13) 35.0
 
April 7, 2021, noon N/A -0.1 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.14 ppb (2) 9.3 μg/m3 (9) 3.4 μg/m3 (15) 35.0
 
April 7, 2021, 11 a.m. N/A -0.1 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.15 ppb (2) 9.2 μg/m3 (9) 3.2 μg/m3 (14) 35.0
 
April 7, 2021, 10 a.m. N/A -0.1 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.13 ppb (2) 7.2 μg/m3 (7) 2.6 μg/m3 (11) 37.0
 
April 7, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.14 ppb (2) 8.1 μg/m3 (8) 2.4 μg/m3 (10) 38.0
 
April 7, 2021, 8 a.m. N/A -0.2 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.13 ppb (2) 9.6 μg/m3 (9) 3.3 μg/m3 (14) 37.0
 
April 7, 2021, 7 a.m. N/A -0.1 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A 10.4 μg/m3 (10) 3.3 μg/m3 (14) 38.0
 
April 7, 2021, 6 a.m. N/A -0.1 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.14 ppb (2) 8.9 μg/m3 (9) 3.2 μg/m3 (14) 38.0
 
April 7, 2021, 5 a.m. N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.14 ppb (2) 12.3 μg/m3 (12) 4.8 μg/m3 (20) 20.0
 
April 7, 2021, 4 a.m. N/A -0.2 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.14 ppb (2) 15.4 μg/m3 (15) 5.3 μg/m3 (23) 43.0
 
April 7, 2021, 3 a.m. N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.17 ppb (3) 14.3 μg/m3 (14) 5.8 μg/m3 (25) 44.0
 
April 7, 2021, 2 a.m. N/A -0.2 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.16 ppb (3) 13.2 μg/m3 (13) 5.2 μg/m3 (22) 44.0
 
April 7, 2021, 1 a.m. N/A -0.2 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.14 ppb (2) 12.5 μg/m3 (12) 4.7 μg/m3 (20) 44.0
 
April 7, 2021, midnight N/A -0.2 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.14 ppb (2) 11.4 μg/m3 (11) 4.4 μg/m3 (19) 44.0
 
April 6, 2021, 11 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.13 ppb (2) 9.9 μg/m3 (10) 4.0 μg/m3 (17) 44.0
 
April 6, 2021, 10 p.m. N/A -0.1 ppb (0) 0.5 ppb (1) N/A N/A N/A 48.0 ppb (45) 0.15 ppb (2) 8.3 μg/m3 (8) 3.1 μg/m3 (13) 45.0
 
April 6, 2021, 9 p.m. N/A -0.1 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.14 ppb (2) 6.6 μg/m3 (7) 2.2 μg/m3 (10) 44.0
 
April 6, 2021, 8 p.m. N/A -0.1 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.14 ppb (2) 8.6 μg/m3 (8) 3.4 μg/m3 (15) 44.0
 
April 6, 2021, 7 p.m. N/A -0.2 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.15 ppb (2) 10.2 μg/m3 (10) 3.2 μg/m3 (14) 44.0
 
April 6, 2021, 6 p.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.15 ppb (2) 8.5 μg/m3 (8) 3.7 μg/m3 (16) 44.0
 
April 6, 2021, 5 p.m. N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.16 ppb (3) 9.3 μg/m3 (9) 3.9 μg/m3 (17) 43.0
 
April 6, 2021, 4 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.16 ppb (3) 9.1 μg/m3 (9) 3.9 μg/m3 (17) 43.0
 
April 6, 2021, 3 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.19 ppb (3) N/A N/A 42.0
 
April 6, 2021, 2 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.18 ppb (3) 9.0 μg/m3 (9) 4.2 μg/m3 (18) 40.0
 
April 6, 2021, 1 p.m. N/A -0.1 ppb (0) 0.6 ppb (1) N/A N/A N/A 42.0 ppb (39) N/A 8.7 μg/m3 (9) 4.3 μg/m3 (18) 39.0
 
April 6, 2021, noon N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) 9.5 μg/m3 (9) 4.4 μg/m3 (19) 19.0
 
April 6, 2021, 11 a.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.18 ppb (3) 10.2 μg/m3 (10) 5.5 μg/m3 (23) 41.0
 
April 6, 2021, 10 a.m. N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.17 ppb (3) 10.7 μg/m3 (10) 5.7 μg/m3 (24) 41.0
 
April 6, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.16 ppb (3) 10.3 μg/m3 (10) 5.5 μg/m3 (23) 41.0
 
April 6, 2021, 8 a.m. N/A -0.1 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.16 ppb (3) 12.1 μg/m3 (12) 5.7 μg/m3 (24) 43.0
 
April 6, 2021, 7 a.m. N/A -0.1 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) N/A 11.9 μg/m3 (12) 6.0 μg/m3 (25) 42.0
 
April 6, 2021, 6 a.m. N/A -0.2 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.16 ppb (3) 11.8 μg/m3 (11) 5.8 μg/m3 (25) 42.0
 
April 6, 2021, 5 a.m. N/A -0.1 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.16 ppb (3) 13.7 μg/m3 (13) 5.8 μg/m3 (25) 25.0
 
April 6, 2021, 4 a.m. N/A -0.2 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.15 ppb (2) 12.0 μg/m3 (12) 5.9 μg/m3 (25) 43.0
 
April 6, 2021, 3 a.m. N/A -0.2 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.15 ppb (2) 11.9 μg/m3 (12) 5.9 μg/m3 (25) 44.0
 
April 6, 2021, 2 a.m. N/A -0.2 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.16 ppb (3) 12.0 μg/m3 (12) 6.1 μg/m3 (26) 45.0
 
April 6, 2021, 1 a.m. N/A -0.2 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.17 ppb (3) 12.6 μg/m3 (12) 6.2 μg/m3 (26) 47.0
 
April 6, 2021, midnight N/A -0.3 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.16 ppb (3) 11.8 μg/m3 (11) 5.6 μg/m3 (24) 48.0
 
April 5, 2021, 11 p.m. N/A -0.1 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 52.0 ppb (49) 0.15 ppb (2) 11.9 μg/m3 (12) 5.5 μg/m3 (23) 49.0
 
April 5, 2021, 10 p.m. N/A -0.1 ppb (0) 0.6 ppb (1) N/A N/A N/A 52.0 ppb (49) 0.17 ppb (3) 11.8 μg/m3 (11) 5.6 μg/m3 (24) 49.0
 
April 5, 2021, 9 p.m. N/A -0.1 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 52.0 ppb (49) 0.16 ppb (3) 11.5 μg/m3 (11) 5.3 μg/m3 (23) 49.0
 
April 5, 2021, 8 p.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.15 ppb (2) 11.9 μg/m3 (12) 5.7 μg/m3 (24) 48.0
 
April 5, 2021, 7 p.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.18 ppb (3) 12.2 μg/m3 (12) 6.0 μg/m3 (25) 48.0
 
April 5, 2021, 6 p.m. N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.18 ppb (3) 12.9 μg/m3 (12) 6.7 μg/m3 (28) 48.0
 
April 5, 2021, 5 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 52.0 ppb (49) 0.18 ppb (3) 13.3 μg/m3 (13) 6.8 μg/m3 (29) 49.0
 
April 5, 2021, 4 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.17 ppb (3) 12.5 μg/m3 (12) 7.3 μg/m3 (31) 48.0
 
April 5, 2021, 3 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.16 ppb (3) 13.4 μg/m3 (13) 7.8 μg/m3 (33) 47.0
 
April 5, 2021, 2 p.m. N/A -0.1 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 49.0 ppb (46) 0.16 ppb (3) 14.0 μg/m3 (13) 8.5 μg/m3 (36) 46.0
 
April 5, 2021, 1 p.m. N/A -0.1 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.18 ppb (3) 14.5 μg/m3 (14) 8.2 μg/m3 (35) 44.0
 
April 5, 2021, noon N/A -0.1 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.18 ppb (3) 13.4 μg/m3 (13) 7.3 μg/m3 (31) 43.0
 
April 5, 2021, 11 a.m. N/A -0.1 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.15 ppb (2) 11.8 μg/m3 (11) 6.1 μg/m3 (26) 44.0
 
April 5, 2021, 10 a.m. N/A -0.1 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.16 ppb (3) 11.8 μg/m3 (11) 6.0 μg/m3 (25) 44.0
 
April 5, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.2 ppb (3) 12.9 μg/m3 (12) 7.1 μg/m3 (30) 45.0
 
April 5, 2021, 8 a.m. N/A -0.2 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 49.0 ppb (46) 0.19 ppb (3) 13.2 μg/m3 (13) 6.9 μg/m3 (29) 46.0
 
April 5, 2021, 7 a.m. N/A -0.2 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 50.0 ppb (47) N/A 13.5 μg/m3 (13) 7.2 μg/m3 (31) 47.0
 
April 5, 2021, 6 a.m. N/A -0.1 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.16 ppb (3) 13.9 μg/m3 (13) 8.0 μg/m3 (34) 47.0
 
April 5, 2021, 5 a.m. N/A -0.1 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.17 ppb (3) 13.6 μg/m3 (13) 7.2 μg/m3 (31) 31.0
 
April 5, 2021, 4 a.m. N/A -0.1 ppb (0) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.17 ppb (3) 13.1 μg/m3 (13) 6.1 μg/m3 (26) 45.0
 
April 5, 2021, 3 a.m. N/A -0.1 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.17 ppb (3) 11.0 μg/m3 (11) 5.7 μg/m3 (24) 45.0
 
April 5, 2021, 2 a.m. N/A -0.2 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.17 ppb (3) 13.8 μg/m3 (13) 6.8 μg/m3 (29) 47.0
 
April 5, 2021, 1 a.m. N/A -0.2 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.17 ppb (3) 19.0 μg/m3 (18) 10.3 μg/m3 (43) 47.0
 
April 5, 2021, midnight N/A -0.3 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.17 ppb (3) 19.4 μg/m3 (18) 9.9 μg/m3 (42) 47.0
 
April 4, 2021, 11 p.m. N/A -0.2 ppb (0) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.15 ppb (2) 16.9 μg/m3 (16) 8.8 μg/m3 (37) 47.0
 
April 4, 2021, 10 p.m. N/A -0.1 ppb (0) 1.1 ppb (2) N/A N/A N/A 51.0 ppb (48) 0.16 ppb (3) 17.9 μg/m3 (17) 9.1 μg/m3 (38) 48.0
 
April 4, 2021, 9 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 53.0 ppb (50) 0.17 ppb (3) 18.4 μg/m3 (18) 9.4 μg/m3 (40) 50.0
 
April 4, 2021, 8 p.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 52.0 ppb (49) 0.17 ppb (3) 16.1 μg/m3 (15) 8.6 μg/m3 (36) 49.0
 
April 4, 2021, 7 p.m. N/A -0.1 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.17 ppb (3) 14.0 μg/m3 (13) 7.5 μg/m3 (32) 48.0
 
April 4, 2021, 6 p.m. N/A -0.1 ppb (0) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.18 ppb (3) 16.6 μg/m3 (16) 7.1 μg/m3 (30) 48.0
 
April 4, 2021, 5 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 49.0 ppb (46) 0.17 ppb (3) 11.8 μg/m3 (11) 6.0 μg/m3 (25) 46.0
 
April 4, 2021, 4 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.15 ppb (2) 8.8 μg/m3 (9) 4.5 μg/m3 (19) 43.0
 
April 4, 2021, 3 p.m. N/A -0.1 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) 7.2 μg/m3 (7) 2.8 μg/m3 (12) 41.0
 
April 4, 2021, 2 p.m. N/A -0.1 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.14 ppb (2) 5.5 μg/m3 (6) 2.3 μg/m3 (10) 42.0
 
April 4, 2021, 1 p.m. N/A -0.1 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.14 ppb (2) 6.1 μg/m3 (6) 2.2 μg/m3 (10) 42.0
 
April 4, 2021, noon N/A -0.2 ppb (0) 0.0 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.15 ppb (2) 3.1 μg/m3 (3) 1.7 μg/m3 (8) 41.0
 
April 4, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) 5.4 μg/m3 (5) 2.2 μg/m3 (10) 41.0
 
April 4, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.13 ppb (2) 5.1 μg/m3 (5) 2.6 μg/m3 (11) 41.0
 
April 4, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.15 ppb (2) 6.2 μg/m3 (6) 3.1 μg/m3 (13) 41.0
 
April 4, 2021, 8 a.m. N/A -0.1 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.14 ppb (2) 5.8 μg/m3 (6) 3.2 μg/m3 (14) 40.0
 
April 4, 2021, 7 a.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A 7.1 μg/m3 (7) 3.3 μg/m3 (14) 40.0
 
April 4, 2021, 6 a.m. N/A -0.1 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.14 ppb (2) 7.6 μg/m3 (8) 3.3 μg/m3 (14) 40.0
 
April 4, 2021, 5 a.m. N/A -0.1 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) 7.1 μg/m3 (7) 3.1 μg/m3 (13) 13.0
 
April 4, 2021, 4 a.m. N/A -0.1 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) 6.8 μg/m3 (7) 3.1 μg/m3 (13) 41.0
 
April 4, 2021, 3 a.m. N/A -0.2 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.12 ppb (2) 5.5 μg/m3 (6) 2.7 μg/m3 (12) 42.0
 
April 4, 2021, 2 a.m. N/A -0.1 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.13 ppb (2) 5.5 μg/m3 (6) 3.0 μg/m3 (13) 42.0
 
April 4, 2021, 1 a.m. N/A -0.2 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.13 ppb (2) 4.9 μg/m3 (5) 2.5 μg/m3 (11) 42.0
 
April 4, 2021, midnight N/A -0.1 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.14 ppb (2) 6.7 μg/m3 (7) 2.7 μg/m3 (12) 42.0
 
April 3, 2021, 11 p.m. N/A -0.2 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.13 ppb (2) 6.0 μg/m3 (6) 2.8 μg/m3 (12) 42.0
 
April 3, 2021, 10 p.m. N/A -0.2 ppb (0) 0.2 ppb (1) N/A N/A N/A 44.0 ppb (41) 0.13 ppb (2) 6.0 μg/m3 (6) 3.0 μg/m3 (13) 41.0
 
April 3, 2021, 9 p.m. N/A -0.1 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.11 ppb (2) 5.8 μg/m3 (6) 2.8 μg/m3 (12) 42.0
 
April 3, 2021, 8 p.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.12 ppb (2) 4.5 μg/m3 (5) 2.4 μg/m3 (10) 43.0
 
April 3, 2021, 7 p.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.12 ppb (2) 4.5 μg/m3 (5) 2.5 μg/m3 (11) 42.0
 
April 3, 2021, 6 p.m. N/A -0.1 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) 6.8 μg/m3 (7) 2.9 μg/m3 (13) 41.0
 
April 3, 2021, 5 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) 7.4 μg/m3 (7) 3.1 μg/m3 (13) 41.0
 
April 3, 2021, 4 p.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.13 ppb (2) 7.1 μg/m3 (7) 3.4 μg/m3 (15) 41.0
 
April 3, 2021, 3 p.m. N/A -0.1 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) 7.8 μg/m3 (8) 3.3 μg/m3 (14) 41.0
 
April 3, 2021, 2 p.m. N/A -0.1 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.13 ppb (2) 8.4 μg/m3 (8) 3.2 μg/m3 (14) 40.0
 
April 3, 2021, 1 p.m. N/A -0.1 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.13 ppb (2) 8.7 μg/m3 (9) 3.3 μg/m3 (14) 38.0
 
April 3, 2021, noon N/A -0.1 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.13 ppb (2) 6.3 μg/m3 (6) 3.3 μg/m3 (14) 36.0
 
April 3, 2021, 11 a.m. N/A -0.1 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.13 ppb (2) 6.9 μg/m3 (7) 3.3 μg/m3 (14) 37.0