AQSQID: 090110124

Site Name: Groton Fort Griswold

Location: Groton (Long Hill), CT

Reporting: True, Located: True

Current AQI: 34.0

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 8, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 8.1 μg/m3 (34) 34.0
 
April 8, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 7.7 μg/m3 (32) 32.0
 
April 8, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
April 8, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 13.0 μg/m3 (12) 7.3 μg/m3 (30) 30.0
 
April 8, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 13.0 μg/m3 (12) 6.7 μg/m3 (28) 29.0
 
April 8, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 6.1 μg/m3 (25) 25.0
 
April 8, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 11.0 μg/m3 (10) 5.9 μg/m3 (25) 33.0
 
April 8, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 11.0 μg/m3 (10) 5.3 μg/m3 (22) 35.0
 
April 8, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 11.0 μg/m3 (10) 5.2 μg/m3 (22) 35.0
 
April 8, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 11.0 μg/m3 (10) 5.3 μg/m3 (22) 36.0
 
April 8, 2020, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 12.0 μg/m3 (11) 5.9 μg/m3 (25) 38.0
 
April 7, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 39.0
 
April 7, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 12.0 μg/m3 (11) 5.2 μg/m3 (22) 38.0
 
April 7, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 15.0 μg/m3 (14) 5.8 μg/m3 (24) 38.0
 
April 7, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 11.0 μg/m3 (10) 4.6 μg/m3 (19) 40.0
 
April 7, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 10.0 μg/m3 (9) 4.5 μg/m3 (19) 41.0
 
April 7, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 10.0 μg/m3 (9) 4.6 μg/m3 (19) 39.0
 
April 7, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 11.0 μg/m3 (10) 4.6 μg/m3 (19) 37.0
 
April 7, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 9.0 μg/m3 (8) 4.5 μg/m3 (19) 36.0
 
April 7, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 38.0
 
April 7, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 35.0
 
April 7, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 4.2 μg/m3 (18) 18.0
 
April 7, 2020, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 27.0
 
April 7, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 25.0
 
April 7, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 31.0
 
April 7, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 8.0 μg/m3 (7) 3.2 μg/m3 (13) 32.0
 
April 7, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) 2.8 μg/m3 (12) 32.0
 
April 7, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 5.0 μg/m3 (5) 2.9 μg/m3 (12) 31.0
 
April 7, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) 2.9 μg/m3 (12) 32.0
 
April 7, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 18.0
 
April 7, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
April 7, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 11.0 μg/m3 (10) 6.2 μg/m3 (26) 29.0
 
April 7, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 11.0 μg/m3 (10) 5.8 μg/m3 (24) 30.0
 
April 7, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 10.0 μg/m3 (9) 5.7 μg/m3 (24) 32.0
 
April 7, 2020, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 10.0 μg/m3 (9) 4.5 μg/m3 (19) 29.0
 
April 6, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 28.0
 
April 6, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 7.0 μg/m3 (6) 3.7 μg/m3 (15) 34.0
 
April 6, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 7.0 μg/m3 (6) 3.6 μg/m3 (15) 35.0
 
April 6, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) 4.1 μg/m3 (17) 36.0
 
April 6, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 35.0
 
April 6, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 11.0 μg/m3 (10) 4.7 μg/m3 (20) 32.0
 
April 6, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 13.0 μg/m3 (12) 6.1 μg/m3 (25) 26.0
 
April 6, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 9.0 μg/m3 (8) 4.8 μg/m3 (20) 30.0
 
April 6, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 30.0
 
April 6, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 9.0 μg/m3 (8) 5.2 μg/m3 (22) 27.0
 
April 6, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 9.0 μg/m3 (8) 5.6 μg/m3 (23) 25.0
 
April 6, 2020, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 12.0 μg/m3 (11) 7.8 μg/m3 (32) 32.0
 
April 6, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 15.0 μg/m3 (14) 9.5 μg/m3 (40) 40.0
 
April 6, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 15.0 μg/m3 (14) 9.5 μg/m3 (40) 40.0
 
April 6, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
April 6, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 17.0 μg/m3 (15) 10.4 μg/m3 (43) 43.0
 
April 6, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 20.0 μg/m3 (18) 11.1 μg/m3 (46) 46.0
 
April 6, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 19.0 μg/m3 (17) 10.9 μg/m3 (45) 45.0
 
April 6, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 9.8 μg/m3 (41) 41.0
 
April 6, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 17.0 μg/m3 (15) 8.9 μg/m3 (37) 37.0
 
April 6, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 18.0 μg/m3 (16) 9.7 μg/m3 (40) 40.0
 
April 6, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 18.0 μg/m3 (16) 9.5 μg/m3 (40) 40.0
 
April 6, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 17.0 μg/m3 (15) 8.4 μg/m3 (35) 35.0
 
April 6, 2020, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 16.0 μg/m3 (15) 7.6 μg/m3 (32) 32.0
 
April 5, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 16.0 μg/m3 (15) 7.7 μg/m3 (32) 32.0
 
April 5, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 16.0 μg/m3 (15) 7.7 μg/m3 (32) 32.0
 
April 5, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 15.0 μg/m3 (14) 6.9 μg/m3 (29) 29.0
 
April 5, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 16.0 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
April 5, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 14.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
April 5, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 15.0 μg/m3 (14) 6.6 μg/m3 (28) 28.0
 
April 5, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 14.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
April 5, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 14.0 μg/m3 (13) 6.4 μg/m3 (27) 28.0
 
April 5, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 5.5 μg/m3 (23) 28.0
 
April 5, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 5.6 μg/m3 (23) 28.0
 
April 5, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 14.0 μg/m3 (13) 6.8 μg/m3 (28) 28.0
 
April 5, 2020, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 17.0 μg/m3 (15) 7.4 μg/m3 (31) 31.0
 
April 5, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 23.0 μg/m3 (21) 9.2 μg/m3 (38) 38.0
 
April 5, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 21.0 μg/m3 (19) 8.8 μg/m3 (37) 37.0
 
April 5, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 17.0 μg/m3 (15) 7.7 μg/m3 (32) 32.0
 
April 5, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 17.0 μg/m3 (15) 7.7 μg/m3 (32) 32.0
 
April 5, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 18.0 μg/m3 (16) 8.2 μg/m3 (34) 34.0
 
April 5, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 17.0 μg/m3 (15) 8.1 μg/m3 (34) 34.0
 
April 5, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 7.9 μg/m3 (33) 33.0
 
April 5, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 17.0 μg/m3 (15) 8.1 μg/m3 (34) 34.0
 
April 5, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 19.0 μg/m3 (17) 8.3 μg/m3 (35) 35.0
 
April 5, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 19.0 μg/m3 (17) 9.2 μg/m3 (38) 38.0
 
April 5, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 40.0 μg/m3 (36) 28.1 μg/m3 (84) 84.0
 
April 5, 2020, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 32.0 μg/m3 (29) 18.8 μg/m3 (64) 64.0
 
April 4, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 42.0 μg/m3 (38) 29.3 μg/m3 (87) 87.0
 
April 4, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 30.0 μg/m3 (27) 19.6 μg/m3 (66) 66.0
 
April 4, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 7.0 μg/m3 (6) 3.8 μg/m3 (16) 34.0
 
April 4, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 33.0
 
April 4, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 8.0 μg/m3 (7) 4.4 μg/m3 (18) 32.0
 
April 4, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 31.0
 
April 4, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 9.0 μg/m3 (8) 4.9 μg/m3 (20) 29.0
 
April 4, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 9.0 μg/m3 (8) 4.7 μg/m3 (20) 29.0
 
April 4, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 8.0 μg/m3 (7) 4.1 μg/m3 (17) 29.0
 
April 4, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 6.0 μg/m3 (5) 3.2 μg/m3 (13) 29.0
 
April 4, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) 2.1 μg/m3 (9) 28.0
 
April 4, 2020, noon N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 3.0 μg/m3 (3) 1.5 μg/m3 (6) 28.0
 
April 4, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 2.0 μg/m3 (2) 1.1 μg/m3 (5) 29.0
 
April 4, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 2.0 μg/m3 (2) 1.1 μg/m3 (5) 29.0
 
April 4, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 3.0 μg/m3 (3) 1.8 μg/m3 (8) 30.0
 
April 4, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 30.0
 
April 4, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 1.0 μg/m3 (1) 0.5 μg/m3 (2) 30.0
 
April 4, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 1.0 μg/m3 (1) 0.6 μg/m3 (2) 30.0
 
April 4, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 0.6 μg/m3 (2) 2.0
 
April 4, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 1.0 μg/m3 (1) 0.5 μg/m3 (2) 30.0
 
April 4, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 1.0 μg/m3 (1) 0.4 μg/m3 (2) 30.0
 
April 4, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 0.0 μg/m3 (0) 0.5 μg/m3 (2) 31.0
 
April 4, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 0.0 μg/m3 (0) 0.5 μg/m3 (2) 31.0
 
April 4, 2020, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 1.0 μg/m3 (1) 0.5 μg/m3 (2) 31.0
 
April 3, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 0.0 μg/m3 (0) 0.4 μg/m3 (2) 31.0
 
April 3, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 0.0 μg/m3 (0) 0.3 μg/m3 (1) 31.0
 
April 3, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 1.0 μg/m3 (1) 0.3 μg/m3 (1) 32.0
 
April 3, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 1.0 μg/m3 (1) 0.4 μg/m3 (2) 32.0
 
April 3, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 1.0 μg/m3 (1) 0.4 μg/m3 (2) 31.0
 
April 3, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 0.0 μg/m3 (0) 0.3 μg/m3 (1) 31.0
 
April 3, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 0.0 μg/m3 (0) 0.3 μg/m3 (1) 30.0
 
April 3, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 1.0 μg/m3 (1) 0.5 μg/m3 (2) 29.0
 
April 3, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 1.0 μg/m3 (1) 0.8 μg/m3 (3) 28.0
 
April 3, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 1.0 μg/m3 (1) 0.7 μg/m3 (3) 27.0
 
April 3, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 2.0 μg/m3 (2) 0.8 μg/m3 (3) 25.0
 
April 3, 2020, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 1.0 μg/m3 (1) 0.8 μg/m3 (3) 22.0
 
April 3, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 1.0 μg/m3 (1) 0.8 μg/m3 (3) 20.0
 
April 3, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 2.0 μg/m3 (2) 0.9 μg/m3 (4) 22.0
 
April 3, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 1.0 μg/m3 (1) 0.6 μg/m3 (2) 22.0
 
April 3, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 1.0 μg/m3 (1) 0.4 μg/m3 (2) 22.0
 
April 3, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 0.0 μg/m3 (0) 0.5 μg/m3 (2) 22.0
 
April 3, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 1.0 μg/m3 (1) 0.6 μg/m3 (2) 22.0
 
April 3, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 0.5 μg/m3 (2) 2.0
 
April 3, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 1.0 μg/m3 (1) 0.7 μg/m3 (3) 23.0
 
April 3, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 2.0 μg/m3 (2) 0.9 μg/m3 (4) 24.0
 
April 3, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 2.0 μg/m3 (2) 0.9 μg/m3 (4) 25.0
 
April 3, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 2.0 μg/m3 (2) 0.9 μg/m3 (4) 26.0
 
April 3, 2020, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 27.0
 
April 2, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) 1.6 μg/m3 (7) 28.0
 
April 2, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 6.0 μg/m3 (5) 2.2 μg/m3 (9) 29.0
 
April 2, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 7.0 μg/m3 (6) 2.8 μg/m3 (12) 28.0
 
April 2, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 9.0 μg/m3 (8) 2.7 μg/m3 (11) 32.0
 
April 2, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 8.0 μg/m3 (7) 2.2 μg/m3 (9) 32.0
 
April 2, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 8.0 μg/m3 (7) 2.1 μg/m3 (9) 32.0
 
April 2, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) 1.7 μg/m3 (7) 32.0
 
April 2, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 5.0 μg/m3 (5) 1.4 μg/m3 (6) 32.0
 
April 2, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 3.0 μg/m3 (3) 1.6 μg/m3 (7) 30.0
 
April 2, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 28.0
 
April 2, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 27.0
 
April 2, 2020, noon N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 6.0 μg/m3 (5) 2.4 μg/m3 (10) 26.0
 
April 2, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 5.0 μg/m3 (5) 2.7 μg/m3 (11) 26.0
 
April 2, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 26.0
 
April 2, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 27.0
 
April 2, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 28.0
 
April 2, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 28.0
 
April 2, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 6.0 μg/m3 (5) 3.4 μg/m3 (14) 28.0
 
April 2, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 17.0
 
April 2, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 7.0 μg/m3 (6) 4.2 μg/m3 (18) 26.0
 
April 2, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 25.0
 
April 2, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 27.0
 
April 2, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 28.0
 
April 2, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 7.0 μg/m3 (6) 3.9 μg/m3 (16) 30.0
 
April 1, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) 3.7 μg/m3 (15) 32.0
 
April 1, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 6.0 μg/m3 (5) 3.6 μg/m3 (15) 33.0
 
April 1, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 5.0 μg/m3 (5) 3.4 μg/m3 (14) 34.0
 
April 1, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) 3.4 μg/m3 (14) 34.0
 
April 1, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) 3.4 μg/m3 (14) 34.0
 
April 1, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 7.0 μg/m3 (6) 4.1 μg/m3 (17) 34.0
 
April 1, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 33.0
 
April 1, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 32.0
 
April 1, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 31.0
 
April 1, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 5.9 μg/m3 (25) 28.0
 
April 1, 2020, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 10.0 μg/m3 (9) 6.1 μg/m3 (25) 25.0
 
April 1, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 6.5 μg/m3 (27) 27.0
 
April 1, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 11.0 μg/m3 (10) 6.4 μg/m3 (27) 27.0