ID: 1659

AQSQID: 090110124

Site Name: Groton Fort Griswold

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

Updated: April 20, 2021, 9:43 a.m.

Location: Groton (Long Hill), CT

Reporting: True, Located: True

Current AQI: 46.0

Groton (Long Hill) CT, US: 41.3536, -72.0789

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 16.6 μg/m3 (16) 10.8 μg/m3 (46) 46.0
 
April 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 17.0 μg/m3 (16) 10.5 μg/m3 (44) 44.0
 
April 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 19.4 μg/m3 (18) 11.1 μg/m3 (47) 47.0
 
April 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.4 μg/m3 (18) 11.2 μg/m3 (47) 47.0
 
April 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
April 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 16.2 μg/m3 (15) 9.9 μg/m3 (42) 42.0
 
April 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 18.1 μg/m3 (17) 10.5 μg/m3 (44) 44.0
 
April 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 17.4 μg/m3 (17) 9.7 μg/m3 (41) 41.0
 
April 20, 2021, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 15.3 μg/m3 (15) 8.7 μg/m3 (37) 41.0
 
April 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 13.5 μg/m3 (13) 7.2 μg/m3 (31) 43.0
 
April 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 13.3 μg/m3 (13) 6.2 μg/m3 (26) 37.0
 
April 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 14.7 μg/m3 (14) 5.8 μg/m3 (25) 36.0
 
April 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 14.8 μg/m3 (14) 5.8 μg/m3 (25) 36.0
 
April 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 20.1 μg/m3 (19) 6.5 μg/m3 (28) 37.0
 
April 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 18.3 μg/m3 (17) 6.2 μg/m3 (26) 37.0
 
April 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 15.0 μg/m3 (14) 5.5 μg/m3 (23) 33.0
 
April 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 22.1 μg/m3 (21) 5.7 μg/m3 (24) 35.0
 
April 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 13.5 μg/m3 (13) 5.6 μg/m3 (24) 33.0
 
April 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 20.2 μg/m3 (19) 6.7 μg/m3 (28) 28.0
 
April 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 16.9 μg/m3 (16) 7.3 μg/m3 (31) 31.0
 
April 19, 2021, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 12.7 μg/m3 (12) 6.7 μg/m3 (28) 28.0
 
April 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 13.6 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
April 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 14.0 μg/m3 (13) 8.7 μg/m3 (37) 37.0
 
April 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 13.6 μg/m3 (13) 8.4 μg/m3 (36) 36.0
 
April 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 13.3 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
April 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 13.6 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
April 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 13.5 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
April 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.6 μg/m3 (13) 7.4 μg/m3 (31) 31.0
 
April 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 13.0 μg/m3 (13) 7.4 μg/m3 (31) 33.0
 
April 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 13.5 μg/m3 (13) 7.4 μg/m3 (31) 34.0
 
April 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 13.7 μg/m3 (13) 7.2 μg/m3 (31) 38.0
 
April 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 13.8 μg/m3 (13) 7.6 μg/m3 (32) 39.0
 
April 19, 2021, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 14.5 μg/m3 (14) 7.3 μg/m3 (31) 38.0
 
April 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 13.1 μg/m3 (13) 7.1 μg/m3 (30) 31.0
 
April 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 12.7 μg/m3 (12) 5.9 μg/m3 (25) 38.0
 
April 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 10.9 μg/m3 (11) 5.3 μg/m3 (23) 41.0
 
April 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 10.8 μg/m3 (10) 5.4 μg/m3 (23) 42.0
 
April 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 10.5 μg/m3 (10) 5.7 μg/m3 (24) 43.0
 
April 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 11.4 μg/m3 (11) 5.8 μg/m3 (25) 41.0
 
April 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 11.1 μg/m3 (11) 5.8 μg/m3 (25) 39.0
 
April 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 11.1 μg/m3 (11) 5.6 μg/m3 (24) 35.0
 
April 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 11.8 μg/m3 (11) 6.3 μg/m3 (27) 34.0
 
April 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 12.9 μg/m3 (12) 6.7 μg/m3 (28) 33.0
 
April 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 11.4 μg/m3 (11) 6.2 μg/m3 (26) 29.0
 
April 18, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 11.6 μg/m3 (11) 6.9 μg/m3 (29) 29.0
 
April 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 12.0 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
April 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 11.9 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
April 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 11.0 μg/m3 (11) 6.7 μg/m3 (28) 28.0
 
April 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 11.5 μg/m3 (11) 6.6 μg/m3 (28) 28.0
 
April 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 10.6 μg/m3 (10) 6.2 μg/m3 (26) 27.0
 
April 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 11.0 μg/m3 (11) 6.6 μg/m3 (28) 28.0
 
April 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.1 μg/m3 (11) 6.5 μg/m3 (28) 28.0
 
April 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 9.8 μg/m3 (10) 6.0 μg/m3 (25) 29.0
 
April 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 9.0 μg/m3 (9) 5.3 μg/m3 (23) 31.0
 
April 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 8.9 μg/m3 (9) 5.1 μg/m3 (22) 30.0
 
April 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 8.8 μg/m3 (9) 5.4 μg/m3 (23) 32.0
 
April 18, 2021, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 8.2 μg/m3 (8) 4.6 μg/m3 (20) 31.0
 
April 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 6.5 μg/m3 (7) 3.9 μg/m3 (17) 31.0
 
April 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 6.9 μg/m3 (7) 3.8 μg/m3 (16) 33.0
 
April 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 4.2 μg/m3 (4) 2.9 μg/m3 (13) 33.0
 
April 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 4.6 μg/m3 (5) 2.0 μg/m3 (9) 32.0
 
April 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 2.8 μg/m3 (3) 1.8 μg/m3 (8) 33.0
 
April 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 3.4 μg/m3 (4) 2.0 μg/m3 (9) 32.0
 
April 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 2.8 μg/m3 (3) 1.5 μg/m3 (7) 32.0
 
April 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 2.4 μg/m3 (3) 1.4 μg/m3 (6) 32.0
 
April 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 2.2 μg/m3 (3) 1.2 μg/m3 (5) 31.0
 
April 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 2.1 μg/m3 (2) 1.4 μg/m3 (6) 31.0
 
April 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 2.5 μg/m3 (3) 1.5 μg/m3 (7) 31.0
 
April 17, 2021, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 2.7 μg/m3 (3) 1.7 μg/m3 (8) 31.0
 
April 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 2.9 μg/m3 (3) 2.0 μg/m3 (9) 30.0
 
April 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 2.6 μg/m3 (3) 1.7 μg/m3 (8) 31.0
 
April 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 2.7 μg/m3 (3) 1.5 μg/m3 (7) 32.0
 
April 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 2.4 μg/m3 (3) 1.4 μg/m3 (6) 32.0
 
April 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 33.0
 
April 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 1.8 μg/m3 (2) 1.2 μg/m3 (5) 33.0
 
April 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.3 μg/m3 (4) 2.2 μg/m3 (10) 10.0
 
April 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 3.5 μg/m3 (4) 2.5 μg/m3 (11) 33.0
 
April 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 3.4 μg/m3 (4) 2.1 μg/m3 (9) 32.0
 
April 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 2.4 μg/m3 (3) 1.8 μg/m3 (8) 32.0
 
April 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 2.5 μg/m3 (3) 1.8 μg/m3 (8) 33.0
 
April 17, 2021, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 2.0 μg/m3 (2) 1.3 μg/m3 (6) 35.0
 
April 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 1.6 μg/m3 (2) 0.7 μg/m3 (3) 36.0
 
April 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 2.0 μg/m3 (2) 0.9 μg/m3 (4) 36.0
 
April 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 1.5 μg/m3 (2) 0.7 μg/m3 (3) 36.0
 
April 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 1.2 μg/m3 (2) 0.6 μg/m3 (3) 36.0
 
April 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 1.1 μg/m3 (2) 0.5 μg/m3 (3) 36.0
 
April 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 1.9 μg/m3 (2) 0.6 μg/m3 (3) 35.0
 
April 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 1.1 μg/m3 (2) 0.6 μg/m3 (3) 34.0
 
April 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 1.5 μg/m3 (2) 0.6 μg/m3 (3) 34.0
 
April 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 1.4 μg/m3 (2) 0.7 μg/m3 (3) 33.0
 
April 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 1.3 μg/m3 (2) 0.6 μg/m3 (3) 33.0
 
April 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 1.3 μg/m3 (2) 0.6 μg/m3 (3) 33.0
 
April 16, 2021, noon N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 1.4 μg/m3 (2) 0.8 μg/m3 (4) 30.0
 
April 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 1.4 μg/m3 (2) 0.6 μg/m3 (3) 30.0
 
April 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 1.2 μg/m3 (2) 0.7 μg/m3 (3) 33.0
 
April 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 3.0 μg/m3 (3) 1.5 μg/m3 (7) 34.0
 
April 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 2.3 μg/m3 (3) 1.5 μg/m3 (7) 34.0
 
April 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 2.2 μg/m3 (3) 1.3 μg/m3 (6) 34.0
 
April 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 2.6 μg/m3 (3) 1.6 μg/m3 (7) 35.0
 
April 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.4 μg/m3 (6) 3.4 μg/m3 (15) 15.0
 
April 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 9.4 μg/m3 (9) 4.8 μg/m3 (20) 34.0
 
April 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 9.7 μg/m3 (9) 5.1 μg/m3 (22) 34.0
 
April 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 12.3 μg/m3 (12) 6.1 μg/m3 (26) 34.0
 
April 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 15.1 μg/m3 (14) 7.0 μg/m3 (30) 35.0
 
April 16, 2021, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 15.5 μg/m3 (15) 7.2 μg/m3 (31) 36.0
 
April 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 15.7 μg/m3 (15) 7.5 μg/m3 (32) 35.0
 
April 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 16.2 μg/m3 (15) 7.6 μg/m3 (32) 36.0
 
April 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 17.1 μg/m3 (16) 7.9 μg/m3 (33) 36.0
 
April 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 17.2 μg/m3 (16) 8.0 μg/m3 (34) 37.0
 
April 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 17.4 μg/m3 (17) 7.9 μg/m3 (33) 38.0
 
April 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 18.4 μg/m3 (18) 8.1 μg/m3 (34) 37.0
 
April 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 18.6 μg/m3 (18) 8.1 μg/m3 (34) 38.0
 
April 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 18.3 μg/m3 (17) 8.3 μg/m3 (35) 36.0
 
April 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 18.5 μg/m3 (18) 8.5 μg/m3 (36) 36.0
 
April 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 20.1 μg/m3 (19) 9.1 μg/m3 (38) 38.0
 
April 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 20.7 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
April 15, 2021, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 20.3 μg/m3 (19) 8.9 μg/m3 (38) 38.0
 
April 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 19.4 μg/m3 (18) 8.3 μg/m3 (35) 35.0
 
April 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 19.1 μg/m3 (18) 8.6 μg/m3 (36) 36.0
 
April 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 17.0 μg/m3 (16) 7.7 μg/m3 (33) 34.0
 
April 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 16.8 μg/m3 (16) 7.4 μg/m3 (31) 35.0
 
April 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 17.1 μg/m3 (16) 7.6 μg/m3 (32) 35.0
 
April 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 18.0 μg/m3 (17) 8.2 μg/m3 (35) 35.0
 
April 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.2 μg/m3 (17) 8.3 μg/m3 (35) 35.0
 
April 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 16.4 μg/m3 (16) 7.6 μg/m3 (32) 36.0
 
April 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 15.8 μg/m3 (15) 7.2 μg/m3 (31) 38.0
 
April 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 16.3 μg/m3 (16) 7.5 μg/m3 (32) 38.0
 
April 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 14.8 μg/m3 (14) 7.1 μg/m3 (30) 38.0
 
April 15, 2021, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 14.5 μg/m3 (14) 6.3 μg/m3 (27) 38.0
 
April 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 12.7 μg/m3 (12) 5.9 μg/m3 (25) 38.0
 
April 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 11.7 μg/m3 (11) 5.7 μg/m3 (24) 40.0
 
April 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 11.9 μg/m3 (12) 5.6 μg/m3 (24) 41.0
 
April 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 13.2 μg/m3 (13) 5.7 μg/m3 (24) 43.0
 
April 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 14.7 μg/m3 (14) 6.0 μg/m3 (25) 43.0
 
April 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 14.5 μg/m3 (14) 6.0 μg/m3 (25) 44.0
 
April 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 15.2 μg/m3 (15) 6.1 μg/m3 (26) 43.0
 
April 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 14.2 μg/m3 (14) 6.3 μg/m3 (27) 41.0
 
April 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 14.6 μg/m3 (14) 6.3 μg/m3 (27) 39.0
 
April 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 13.5 μg/m3 (13) 6.3 μg/m3 (27) 38.0
 
April 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 14.5 μg/m3 (14) 6.0 μg/m3 (25) 34.0
 
April 14, 2021, noon N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 12.9 μg/m3 (12) 5.9 μg/m3 (25) 32.0
 
April 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 14.0 μg/m3 (13) 6.1 μg/m3 (26) 31.0
 
April 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 13.2 μg/m3 (13) 6.2 μg/m3 (26) 28.0
 
April 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 13.0 μg/m3 (13) 6.0 μg/m3 (25) 29.0
 
April 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 12.4 μg/m3 (12) 5.8 μg/m3 (25) 29.0
 
April 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 11.0 μg/m3 (11) 5.4 μg/m3 (23) 30.0
 
April 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 12.3 μg/m3 (12) 5.6 μg/m3 (24) 30.0
 
April 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.7 μg/m3 (12) 5.8 μg/m3 (25) 25.0
 
April 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 13.2 μg/m3 (13) 6.1 μg/m3 (26) 31.0
 
April 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 13.3 μg/m3 (13) 6.3 μg/m3 (27) 30.0
 
April 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 13.4 μg/m3 (13) 6.3 μg/m3 (27) 33.0
 
April 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 13.6 μg/m3 (13) 6.3 μg/m3 (27) 33.0
 
April 14, 2021, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 13.5 μg/m3 (13) 6.0 μg/m3 (25) 35.0
 
April 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 15.5 μg/m3 (15) 6.5 μg/m3 (28) 34.0
 
April 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 14.1 μg/m3 (14) 6.2 μg/m3 (26) 38.0
 
April 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 15.5 μg/m3 (15) 6.0 μg/m3 (25) 39.0
 
April 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 14.4 μg/m3 (14) 5.8 μg/m3 (25) 41.0
 
April 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 15.6 μg/m3 (15) 5.8 μg/m3 (25) 43.0
 
April 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 9.2 μg/m3 (9) 4.3 μg/m3 (18) 42.0
 
April 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 10.5 μg/m3 (10) 4.3 μg/m3 (18) 41.0
 
April 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 11.5 μg/m3 (11) 4.6 μg/m3 (20) 39.0
 
April 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 10.5 μg/m3 (10) 4.5 μg/m3 (19) 40.0
 
April 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 11.0 μg/m3 (11) 4.8 μg/m3 (20) 39.0
 
April 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 11.0 μg/m3 (11) 4.9 μg/m3 (21) 36.0
 
April 13, 2021, noon N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 9.0 μg/m3 (9) 4.5 μg/m3 (19) 32.0
 
April 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 9.8 μg/m3 (10) 4.6 μg/m3 (20) 30.0
 
April 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 10.1 μg/m3 (10) 4.8 μg/m3 (20) 29.0
 
April 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 10.8 μg/m3 (10) 5.1 μg/m3 (22) 29.0