AQSQID: 090050005

Site Name: Cornwall

Location: Litchfield Co, CT

Reporting: True, Located: True

Current AQI: 20.0

Litchfield Co CT, US: 41.833099, -73.303299

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 22, 2019, 11 p.m. N/A 0.7 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.13 ppb (1) 4.0 μg/m3 (4) 2.2 μg/m3 (9) 20.0
 
July 22, 2019, 10 p.m. N/A 0.7 ppb (1) 1.7 ppb (2) N/A N/A N/A 26.0 ppb (20) 0.12 ppb (1) 6.0 μg/m3 (5) 3.7 μg/m3 (15) 20.0
 
July 22, 2019, 9 p.m. N/A 0.7 ppb (1) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.12 ppb (1) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
July 22, 2019, 8 p.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.12 ppb (1) 14.0 μg/m3 (13) 7.8 μg/m3 (32) 32.0
 
July 22, 2019, 7 p.m. N/A 0.7 ppb (1) 3.5 ppb (3) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.14 ppb (2) 15.0 μg/m3 (14) 7.3 μg/m3 (30) 31.0
 
July 22, 2019, 6 p.m. N/A 0.7 ppb (1) 3.5 ppb (3) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.14 ppb (2) 15.0 μg/m3 (14) 7.1 μg/m3 (30) 36.0
 
July 22, 2019, 5 p.m. N/A 0.7 ppb (1) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.12 ppb (1) 11.0 μg/m3 (10) 5.5 μg/m3 (23) 32.0
 
July 22, 2019, 4 p.m. N/A 0.7 ppb (1) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.11 ppb (1) 13.0 μg/m3 (12) 5.9 μg/m3 (25) 28.0
 
July 22, 2019, 3 p.m. N/A 0.8 ppb (1) 2.2 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) 14.0 μg/m3 (13) 6.3 μg/m3 (26) 26.0
 
July 22, 2019, 2 p.m. N/A 0.7 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.11 ppb (1) 12.0 μg/m3 (11) 6.3 μg/m3 (26) 27.0
 
July 22, 2019, 1 p.m. N/A 0.7 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.11 ppb (1) 10.0 μg/m3 (9) 4.9 μg/m3 (20) 26.0
 
July 22, 2019, noon N/A 0.7 ppb (1) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) 9.0 μg/m3 (8) 4.5 μg/m3 (19) 27.0
 
July 22, 2019, 11 a.m. N/A 0.7 ppb (1) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) 10.0 μg/m3 (9) 4.4 μg/m3 (18) 28.0
 
July 22, 2019, 10 a.m. N/A 0.7 ppb (1) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.09 ppb (1) 11.0 μg/m3 (10) 4.4 μg/m3 (18) 29.0
 
July 22, 2019, 9 a.m. N/A 0.7 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.1 ppb (1) 11.0 μg/m3 (10) 4.9 μg/m3 (20) 29.0
 
July 22, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.09 ppb (1) 10.0 μg/m3 (9) 4.2 μg/m3 (18) 31.0
 
July 22, 2019, 7 a.m. N/A 0.6 ppb (1) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 10.0 μg/m3 (9) 4.4 μg/m3 (18) 31.0
 
July 22, 2019, 6 a.m. N/A 0.7 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.1 ppb (1) 9.0 μg/m3 (8) 4.5 μg/m3 (19) 30.0
 
July 22, 2019, 5 a.m. N/A 0.6 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.11 ppb (1) 8.0 μg/m3 (7) 4.2 μg/m3 (18) 18.0
 
July 22, 2019, 4 a.m. N/A 0.7 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.1 ppb (1) 9.0 μg/m3 (8) 4.3 μg/m3 (18) 31.0
 
July 22, 2019, 3 a.m. N/A 0.7 ppb (1) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.11 ppb (1) 8.0 μg/m3 (7) 4.1 μg/m3 (17) 32.0
 
July 22, 2019, 2 a.m. N/A 0.7 ppb (1) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.11 ppb (1) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 31.0
 
July 22, 2019, 1 a.m. N/A 0.7 ppb (1) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.11 ppb (1) 9.0 μg/m3 (8) 4.1 μg/m3 (17) 31.0
 
July 22, 2019, midnight N/A 0.7 ppb (1) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.11 ppb (1) 9.0 μg/m3 (8) 4.1 μg/m3 (17) 32.0
 
July 21, 2019, 11 p.m. N/A 0.7 ppb (1) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.11 ppb (1) 8.0 μg/m3 (7) 3.9 μg/m3 (16) 33.0
 
July 21, 2019, 10 p.m. N/A 0.7 ppb (1) 1.7 ppb (2) N/A N/A N/A 44.0 ppb (34) 0.11 ppb (1) 9.0 μg/m3 (8) 3.6 μg/m3 (15) 34.0
 
July 21, 2019, 9 p.m. N/A 0.7 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.12 ppb (1) 9.0 μg/m3 (8) 4.3 μg/m3 (18) 35.0
 
July 21, 2019, 8 p.m. N/A 0.7 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) 11.0 μg/m3 (10) 4.7 μg/m3 (20) 34.0
 
July 21, 2019, 7 p.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.12 ppb (1) 10.0 μg/m3 (9) 5.1 μg/m3 (21) 33.0
 
July 21, 2019, 6 p.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.12 ppb (1) 9.0 μg/m3 (8) 4.2 μg/m3 (18) 33.0
 
July 21, 2019, 5 p.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.12 ppb (1) 10.0 μg/m3 (9) 4.2 μg/m3 (18) 33.0
 
July 21, 2019, 4 p.m. N/A 0.7 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) 9.0 μg/m3 (8) 3.8 μg/m3 (16) 32.0
 
July 21, 2019, 3 p.m. N/A 0.7 ppb (1) 2.2 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) 10.0 μg/m3 (9) 4.7 μg/m3 (20) 29.0
 
July 21, 2019, 2 p.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.13 ppb (1) 11.0 μg/m3 (10) 5.8 μg/m3 (24) 25.0
 
July 21, 2019, 1 p.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) 11.0 μg/m3 (10) 6.1 μg/m3 (25) 25.0
 
July 21, 2019, noon N/A 0.7 ppb (1) 2.2 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) 11.0 μg/m3 (10) 6.6 μg/m3 (28) 28.0
 
July 21, 2019, 11 a.m. N/A 0.7 ppb (1) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
July 21, 2019, 10 a.m. N/A 0.7 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) 12.0 μg/m3 (11) 6.5 μg/m3 (27) 27.0
 
July 21, 2019, 9 a.m. N/A 0.7 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) 12.0 μg/m3 (11) 6.3 μg/m3 (26) 29.0
 
July 21, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 30.0
 
July 21, 2019, 7 a.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 10.0 μg/m3 (9) 6.3 μg/m3 (26) 30.0
 
July 21, 2019, 6 a.m. N/A 0.7 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.12 ppb (1) 11.0 μg/m3 (10) 5.9 μg/m3 (25) 32.0
 
July 21, 2019, 5 a.m. N/A 0.7 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.13 ppb (1) 11.0 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
July 21, 2019, 4 a.m. N/A 0.7 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) 11.0 μg/m3 (10) 6.1 μg/m3 (25) 30.0
 
July 21, 2019, 3 a.m. N/A 0.7 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) 12.0 μg/m3 (11) 7.1 μg/m3 (30) 30.0
 
July 21, 2019, 2 a.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) 13.0 μg/m3 (12) 7.5 μg/m3 (31) 31.0
 
July 21, 2019, 1 a.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.14 ppb (2) 13.0 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
July 21, 2019, midnight N/A 0.7 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.14 ppb (2) 14.0 μg/m3 (13) 8.4 μg/m3 (35) 35.0
 
July 20, 2019, 11 p.m. N/A 0.7 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.13 ppb (1) 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
July 20, 2019, 10 p.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A N/A N/A 0.13 ppb (1) 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
July 20, 2019, 9 p.m. N/A 0.7 ppb (1) 2.4 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.14 ppb (2) 13.0 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
July 20, 2019, 8 p.m. N/A 0.7 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.14 ppb (2) 13.0 μg/m3 (12) 7.5 μg/m3 (31) 31.0
 
July 20, 2019, 7 p.m. N/A 0.7 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.14 ppb (2) 13.0 μg/m3 (12) 8.2 μg/m3 (34) 34.0
 
July 20, 2019, 6 p.m. N/A 0.7 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) 14.0 μg/m3 (13) 8.4 μg/m3 (35) 35.0
 
July 20, 2019, 5 p.m. N/A 0.7 ppb (1) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.15 ppb (2) 15.0 μg/m3 (14) 8.7 μg/m3 (36) 36.0
 
July 20, 2019, 4 p.m. N/A 0.7 ppb (1) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) 16.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
July 20, 2019, 3 p.m. N/A 0.7 ppb (1) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) 13.0 μg/m3 (12) 8.2 μg/m3 (34) 34.0
 
July 20, 2019, 2 p.m. N/A 0.7 ppb (1) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) 15.0 μg/m3 (14) 8.4 μg/m3 (35) 35.0
 
July 20, 2019, 1 p.m. N/A 0.8 ppb (1) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
July 20, 2019, noon N/A 0.8 ppb (1) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.14 ppb (2) 14.0 μg/m3 (13) 8.1 μg/m3 (34) 34.0
 
July 20, 2019, 11 a.m. N/A 0.7 ppb (1) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) 14.0 μg/m3 (13) 7.8 μg/m3 (32) 32.0
 
July 20, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) 13.0 μg/m3 (12) 7.5 μg/m3 (31) 31.0
 
July 20, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) 12.0 μg/m3 (11) 7.7 μg/m3 (32) 32.0
 
July 20, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) 13.0 μg/m3 (12) 7.6 μg/m3 (32) 32.0
 
July 20, 2019, 7 a.m. N/A 0.7 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A 13.0 μg/m3 (12) 7.8 μg/m3 (32) 32.0
 
July 20, 2019, 6 a.m. N/A 0.7 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) 15.0 μg/m3 (14) 8.3 μg/m3 (35) 35.0
 
July 20, 2019, 5 a.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) 15.0 μg/m3 (14) 9.5 μg/m3 (40) 40.0
 
July 20, 2019, 4 a.m. N/A 0.7 ppb (1) 2.2 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.15 ppb (2) 15.0 μg/m3 (14) 9.5 μg/m3 (40) 40.0
 
July 20, 2019, 3 a.m. N/A 0.7 ppb (1) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.16 ppb (2) 16.0 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
July 20, 2019, 2 a.m. N/A 0.7 ppb (1) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.17 ppb (2) 16.0 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
July 20, 2019, 1 a.m. N/A 0.7 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.19 ppb (2) 18.0 μg/m3 (16) 10.9 μg/m3 (45) 45.0
 
July 20, 2019, midnight N/A 0.7 ppb (1) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.19 ppb (2) 17.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
July 19, 2019, 11 p.m. N/A 0.7 ppb (1) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.2 ppb (2) 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
July 19, 2019, 10 p.m. N/A 0.7 ppb (1) 3.0 ppb (3) N/A N/A N/A 51.0 ppb (39) 0.18 ppb (2) 15.0 μg/m3 (14) 8.8 μg/m3 (37) 39.0
 
July 19, 2019, 9 p.m. N/A 0.7 ppb (1) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.18 ppb (2) 14.0 μg/m3 (13) 7.8 μg/m3 (32) 37.0
 
July 19, 2019, 8 p.m. N/A 0.7 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.17 ppb (2) 12.0 μg/m3 (11) 6.7 μg/m3 (28) 33.0
 
July 19, 2019, 7 p.m. N/A 0.7 ppb (1) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.17 ppb (2) 11.0 μg/m3 (10) 5.9 μg/m3 (25) 32.0
 
July 19, 2019, 6 p.m. N/A 0.7 ppb (1) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.16 ppb (2) 10.0 μg/m3 (9) 5.3 μg/m3 (22) 29.0
 
July 19, 2019, 5 p.m. N/A 0.7 ppb (1) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.16 ppb (2) 11.0 μg/m3 (10) 5.4 μg/m3 (23) 26.0
 
July 19, 2019, 4 p.m. N/A 0.7 ppb (1) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.16 ppb (2) 11.0 μg/m3 (10) 5.6 μg/m3 (23) 23.0
 
July 19, 2019, 3 p.m. N/A 0.8 ppb (1) 2.2 ppb (2) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.16 ppb (2) 10.0 μg/m3 (9) 5.8 μg/m3 (24) 24.0
 
July 19, 2019, 2 p.m. N/A 0.8 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.15 ppb (2) 8.0 μg/m3 (7) 4.9 μg/m3 (20) 20.0
 
July 19, 2019, 1 p.m. N/A 0.8 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.15 ppb (2) 7.0 μg/m3 (6) 4.1 μg/m3 (17) 17.0
 
July 19, 2019, noon N/A 0.8 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.15 ppb (2) 6.0 μg/m3 (5) 3.6 μg/m3 (15) 15.0
 
July 19, 2019, 11 a.m. N/A 0.8 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.16 ppb (2) 4.0 μg/m3 (4) 2.7 μg/m3 (11) 15.0
 
July 19, 2019, 10 a.m. N/A 0.7 ppb (1) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) 3.0 μg/m3 (3) 1.8 μg/m3 (8) 18.0
 
July 19, 2019, 9 a.m. N/A 0.7 ppb (1) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.15 ppb (2) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 23.0
 
July 19, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 22.0
 
July 19, 2019, 7 a.m. N/A 0.7 ppb (1) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 17.0 ppb (13) N/A 15.0 μg/m3 (14) 8.3 μg/m3 (35) 35.0
 
July 19, 2019, 6 a.m. N/A 0.7 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.15 ppb (2) 15.0 μg/m3 (14) 8.5 μg/m3 (35) 35.0
 
July 19, 2019, 5 a.m. N/A 0.8 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.16 ppb (2) 11.0 μg/m3 (10) 6.8 μg/m3 (28) 28.0
 
July 19, 2019, 4 a.m. N/A 0.7 ppb (1) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.16 ppb (2) 15.0 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
July 19, 2019, 3 a.m. N/A 0.7 ppb (1) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.15 ppb (2) 16.0 μg/m3 (15) 7.8 μg/m3 (32) 32.0
 
July 19, 2019, 2 a.m. N/A 0.7 ppb (1) 2.2 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.14 ppb (2) 15.0 μg/m3 (14) 7.7 μg/m3 (32) 32.0
 
July 19, 2019, 1 a.m. N/A 0.7 ppb (1) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) 15.0 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
July 19, 2019, midnight N/A 0.7 ppb (1) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.15 ppb (2) 17.0 μg/m3 (15) 9.3 μg/m3 (39) 39.0
 
July 18, 2019, 11 p.m. N/A 0.7 ppb (1) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) 14.0 μg/m3 (13) 8.4 μg/m3 (35) 35.0
 
July 18, 2019, 10 p.m. N/A 0.7 ppb (1) 2.2 ppb (2) N/A N/A N/A 26.0 ppb (20) 0.15 ppb (2) 15.0 μg/m3 (14) 8.8 μg/m3 (37) 37.0
 
July 18, 2019, 9 p.m. N/A 0.8 ppb (1) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) 15.0 μg/m3 (14) 8.9 μg/m3 (37) 37.0
 
July 18, 2019, 8 p.m. N/A 0.8 ppb (1) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) 14.0 μg/m3 (13) 8.5 μg/m3 (35) 35.0
 
July 18, 2019, 7 p.m. N/A 0.8 ppb (1) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.15 ppb (2) 14.0 μg/m3 (13) 9.2 μg/m3 (38) 38.0
 
July 18, 2019, 6 p.m. N/A 0.8 ppb (1) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.14 ppb (2) 13.0 μg/m3 (12) 10.1 μg/m3 (42) 42.0
 
July 18, 2019, 5 p.m. N/A 1.0 ppb (1) 2.8 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) 10.0 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
July 18, 2019, 4 p.m. N/A 1.1 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.14 ppb (2) 7.0 μg/m3 (6) 4.4 μg/m3 (18) 18.0
 
July 18, 2019, 3 p.m. N/A 0.9 ppb (1) 2.2 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (1) 9.0 μg/m3 (8) 4.9 μg/m3 (20) 20.0
 
July 18, 2019, 2 p.m. N/A 0.8 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.11 ppb (1) 11.0 μg/m3 (10) 5.2 μg/m3 (22) 22.0
 
July 18, 2019, 1 p.m. N/A 0.8 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.11 ppb (1) 9.0 μg/m3 (8) 4.8 μg/m3 (20) 20.0
 
July 18, 2019, noon N/A 0.8 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.11 ppb (1) 8.0 μg/m3 (7) 3.7 μg/m3 (15) 15.0
 
July 18, 2019, 11 a.m. N/A 0.7 ppb (1) 1.5 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
 
July 18, 2019, 10 a.m. N/A 0.8 ppb (1) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.12 ppb (1) 2.0 μg/m3 (2) 1.9 μg/m3 (8) 8.0
 
July 18, 2019, 9 a.m. N/A 0.5 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.11 ppb (1) 6.0 μg/m3 (5) 3.2 μg/m3 (13) 13.0
 
July 18, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.11 ppb (1) 3.0 μg/m3 (3) 2.2 μg/m3 (9) 11.0
 
July 18, 2019, 7 a.m. N/A 0.7 ppb (1) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A 8.0 μg/m3 (7) 4.3 μg/m3 (18) 18.0
 
July 18, 2019, 6 a.m. N/A 0.7 ppb (1) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.1 ppb (1) 8.0 μg/m3 (7) 4.6 μg/m3 (19) 23.0
 
July 18, 2019, 5 a.m. N/A 0.7 ppb (1) 1.1 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.1 ppb (1) 10.0 μg/m3 (9) 5.2 μg/m3 (22) 22.0
 
July 18, 2019, 4 a.m. N/A 0.6 ppb (1) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.1 ppb (1) 9.0 μg/m3 (8) 4.8 μg/m3 (20) 20.0
 
July 18, 2019, 3 a.m. N/A 0.7 ppb (1) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.11 ppb (1) 8.0 μg/m3 (7) 4.4 μg/m3 (18) 18.0
 
July 18, 2019, 2 a.m. N/A 0.7 ppb (1) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.11 ppb (1) 8.0 μg/m3 (7) 4.4 μg/m3 (18) 18.0
 
July 18, 2019, 1 a.m. N/A 0.7 ppb (1) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.11 ppb (1) 11.0 μg/m3 (10) 5.3 μg/m3 (22) 22.0
 
July 18, 2019, midnight N/A 0.7 ppb (1) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) 9.0 μg/m3 (8) 5.3 μg/m3 (22) 22.0
 
July 17, 2019, 11 p.m. N/A 0.7 ppb (1) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.11 ppb (1) 10.0 μg/m3 (9) 5.5 μg/m3 (23) 23.0
 
July 17, 2019, 10 p.m. N/A 0.7 ppb (1) 1.4 ppb (1) N/A N/A N/A 24.0 ppb (18) 0.11 ppb (1) 11.0 μg/m3 (10) 5.8 μg/m3 (24) 24.0
 
July 17, 2019, 9 p.m. N/A 0.8 ppb (1) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.12 ppb (1) 12.0 μg/m3 (11) 6.3 μg/m3 (26) 26.0
 
July 17, 2019, 8 p.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) 18.0 μg/m3 (16) 7.5 μg/m3 (31) 31.0
 
July 17, 2019, 7 p.m. N/A 0.7 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) 19.0 μg/m3 (17) 7.8 μg/m3 (32) 33.0
 
July 17, 2019, 6 p.m. N/A 0.7 ppb (1) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.13 ppb (1) 14.0 μg/m3 (13) 6.2 μg/m3 (26) 34.0
 
July 17, 2019, 5 p.m. N/A 0.7 ppb (1) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.14 ppb (2) 15.0 μg/m3 (14) 7.8 μg/m3 (32) 35.0
 
July 17, 2019, 4 p.m. N/A 0.7 ppb (1) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.14 ppb (2) 17.0 μg/m3 (15) 8.7 μg/m3 (36) 36.0
 
July 17, 2019, 3 p.m. N/A 0.7 ppb (1) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) 16.0 μg/m3 (15) 7.3 μg/m3 (30) 32.0
 
July 17, 2019, 2 p.m. N/A 0.7 ppb (1) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) 15.0 μg/m3 (14) 8.0 μg/m3 (33) 33.0
 
July 17, 2019, 1 p.m. N/A 0.7 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.16 ppb (2) 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
July 17, 2019, noon N/A 0.7 ppb (1) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.15 ppb (2) 12.0 μg/m3 (11) 7.7 μg/m3 (32) 32.0
 
July 17, 2019, 11 a.m. N/A 0.7 ppb (1) 2.2 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) 12.0 μg/m3 (11) 7.1 μg/m3 (30) 32.0
 
July 17, 2019, 10 a.m. N/A 0.7 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) 11.0 μg/m3 (10) 6.7 μg/m3 (28) 33.0
 
July 17, 2019, 9 a.m. N/A 0.7 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.13 ppb (1) 10.0 μg/m3 (9) 5.8 μg/m3 (24) 34.0
 
July 17, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) 11.0 μg/m3 (10) 6.1 μg/m3 (25) 34.0
 
July 17, 2019, 7 a.m. N/A 0.7 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A 11.0 μg/m3 (10) 5.9 μg/m3 (25) 35.0
 
July 17, 2019, 6 a.m. N/A 0.7 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.13 ppb (1) 10.0 μg/m3 (9) 5.6 μg/m3 (23) 35.0
 
July 17, 2019, 5 a.m. N/A 0.7 ppb (1) 1.6 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.13 ppb (1) 11.0 μg/m3 (10) 5.5 μg/m3 (23) 23.0
 
July 17, 2019, 4 a.m. N/A 0.7 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.14 ppb (2) 11.0 μg/m3 (10) 5.7 μg/m3 (24) 38.0
 
July 17, 2019, 3 a.m. N/A 0.7 ppb (1) 2.2 ppb (2) N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.14 ppb (2) 11.0 μg/m3 (10) 6.1 μg/m3 (25) 41.0
 
July 17, 2019, 2 a.m. N/A 0.6 ppb (1) 3.3 ppb (3) N/A N/A 0.0 ppb (0) 67.0 ppb (52) 0.18 ppb (2) 16.0 μg/m3 (15) 8.6 μg/m3 (36) 52.0
 
July 17, 2019, 1 a.m. N/A 0.7 ppb (1) 3.2 ppb (3) N/A N/A 0.0 ppb (0) 72.0 ppb (56) 0.19 ppb (2) 17.0 μg/m3 (15) 9.1 μg/m3 (38) 56.0
 
July 17, 2019, midnight N/A 0.7 ppb (1) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 66.0 ppb (51) 0.18 ppb (2) 15.0 μg/m3 (14) 8.7 μg/m3 (36) 51.0
 
July 16, 2019, 11 p.m. N/A 0.7 ppb (1) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 60.0 ppb (46) 0.17 ppb (2) 15.0 μg/m3 (14) 7.6 μg/m3 (32) 46.0
 
July 16, 2019, 10 p.m. N/A 0.7 ppb (1) 2.5 ppb (2) N/A N/A N/A 59.0 ppb (45) 0.17 ppb (2) 16.0 μg/m3 (15) 7.6 μg/m3 (32) 45.0
 
July 16, 2019, 9 p.m. N/A 0.7 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 60.0 ppb (46) 0.16 ppb (2) 15.0 μg/m3 (14) 7.3 μg/m3 (30) 46.0
 
July 16, 2019, 8 p.m. N/A 0.7 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 59.0 ppb (45) 0.16 ppb (2) 15.0 μg/m3 (14) 6.8 μg/m3 (28) 45.0
 
July 16, 2019, 7 p.m. N/A 0.7 ppb (1) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 57.0 ppb (44) 0.16 ppb (2) 14.0 μg/m3 (13) 5.7 μg/m3 (24) 44.0
 
July 16, 2019, 6 p.m. N/A 0.7 ppb (1) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.15 ppb (2) 14.0 μg/m3 (13) 6.4 μg/m3 (27) 42.0
 
July 16, 2019, 5 p.m. N/A 0.7 ppb (1) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.14 ppb (2) 12.0 μg/m3 (11) 5.4 μg/m3 (23) 35.0
 
July 16, 2019, 4 p.m. N/A 0.7 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 11.0 μg/m3 (10) 5.3 μg/m3 (22) 31.0
 
July 16, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 26.0
 
July 16, 2019, 2 p.m. N/A 0.7 ppb (1) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.11 ppb (1) 9.0 μg/m3 (8) 4.9 μg/m3 (20) 23.0
 
July 16, 2019, 1 p.m. N/A 0.7 ppb (1) 1.5 ppb (1) N/A N/A N/A 27.0 ppb (21) 0.12 ppb (1) 11.0 μg/m3 (10) 5.4 μg/m3 (23) 23.0
 
July 16, 2019, noon N/A 0.7 ppb (1) 1.7 ppb (2) N/A N/A 1.0 ppb (1) 26.0 ppb (20) 0.12 ppb (1) 10.0 μg/m3 (9) 5.6 μg/m3 (23) 23.0
 
July 16, 2019, 11 a.m. N/A 0.7 ppb (1) 1.8 ppb (2) N/A N/A 1.0 ppb (1) 28.0 ppb (22) 0.12 ppb (1) 10.0 μg/m3 (9) 7.1 μg/m3 (30) 30.0
 
July 16, 2019, 10 a.m. N/A 0.7 ppb (1) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.11 ppb (1) 10.0 μg/m3 (9) 6.8 μg/m3 (28) 28.0
 
July 16, 2019, 9 a.m. N/A 0.6 ppb (1) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.12 ppb (1) 11.0 μg/m3 (10) 6.5 μg/m3 (27) 27.0
 
July 16, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.11 ppb (1) 10.0 μg/m3 (9) 6.2 μg/m3 (26) 26.0
 
July 16, 2019, 7 a.m. N/A 0.6 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 28.0 ppb (22) N/A 11.0 μg/m3 (10) 6.8 μg/m3 (28) 28.0
 
July 16, 2019, 6 a.m. N/A 0.7 ppb (1) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.11 ppb (1) 10.0 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
July 16, 2019, 5 a.m. N/A 0.7 ppb (1) 1.2 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.11 ppb (1) 11.0 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
July 16, 2019, 4 a.m. N/A 0.7 ppb (1) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.11 ppb (1) 11.0 μg/m3 (10) 6.9 μg/m3 (29) 29.0
 
July 16, 2019, 3 a.m. N/A 0.7 ppb (1) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) 12.0 μg/m3 (11) 6.1 μg/m3 (25) 25.0
 
July 16, 2019, 2 a.m. N/A 0.7 ppb (1) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.11 ppb (1) 12.0 μg/m3 (11) 6.3 μg/m3 (26) 26.0
 
July 16, 2019, 1 a.m. N/A 0.7 ppb (1) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) 10.0 μg/m3 (9) 6.3 μg/m3 (26) 26.0
 
July 16, 2019, midnight N/A 0.7 ppb (1) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.12 ppb (1) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 28.0