ID: 1659

AQSQID: 090110124

Site Name: Groton Fort Griswold

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

Updated: Sept. 29, 2020, 11:40 p.m.

Location: Groton (Long Hill), CT

Reporting: True, Located: True

Current AQI: 27.0

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
Sept. 29, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 12.9 μg/m3 (12) 6.4 μg/m3 (27) 27.0
 
Sept. 29, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 10.9 μg/m3 (10) 5.7 μg/m3 (24) 25.0
 
Sept. 29, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.1 μg/m3 (10) 5.3 μg/m3 (22) 24.0
 
Sept. 29, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.1 μg/m3 (10) 4.8 μg/m3 (20) 24.0
 
Sept. 29, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 13.3 μg/m3 (12) 4.9 μg/m3 (20) 25.0
 
Sept. 29, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 8.5 μg/m3 (8) 4.0 μg/m3 (17) 25.0
 
Sept. 29, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 8.9 μg/m3 (8) 4.5 μg/m3 (19) 26.0
 
Sept. 29, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 9.5 μg/m3 (9) 4.1 μg/m3 (17) 25.0
 
Sept. 29, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 9.5 μg/m3 (9) 4.5 μg/m3 (19) 23.0
 
Sept. 29, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 8.5 μg/m3 (8) 4.6 μg/m3 (19) 21.0
 
Sept. 29, 2020, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 6.9 μg/m3 (6) 4.2 μg/m3 (18) 18.0
 
Sept. 29, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 20.0
 
Sept. 29, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 13.2 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
Sept. 29, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 7.5 μg/m3 (7) 4.4 μg/m3 (18) 21.0
 
Sept. 29, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 7.7 μg/m3 (7) 4.9 μg/m3 (20) 24.0
 
Sept. 29, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 7.9 μg/m3 (7) 4.9 μg/m3 (20) 24.0
 
Sept. 29, 2020, 6 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) 4.7 μg/m3 (20) 25.0
 
Sept. 29, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.9 μg/m3 (6) 4.1 μg/m3 (17) 17.0
 
Sept. 29, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 6.6 μg/m3 (6) 4.3 μg/m3 (18) 25.0
 
Sept. 29, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 7.7 μg/m3 (7) 4.6 μg/m3 (19) 22.0
 
Sept. 29, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 7.5 μg/m3 (7) 4.5 μg/m3 (19) 23.0
 
Sept. 29, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 6.4 μg/m3 (6) 4.0 μg/m3 (17) 25.0
 
Sept. 29, 2020, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 7.8 μg/m3 (7) 4.3 μg/m3 (18) 25.0
 
Sept. 28, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 9.4 μg/m3 (9) 5.0 μg/m3 (21) 25.0
 
Sept. 28, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 10.3 μg/m3 (9) 5.3 μg/m3 (22) 25.0
 
Sept. 28, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 11.9 μg/m3 (11) 5.9 μg/m3 (25) 25.0
 
Sept. 28, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 12.2 μg/m3 (11) 6.2 μg/m3 (26) 27.0
 
Sept. 28, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 12.4 μg/m3 (11) 6.2 μg/m3 (26) 27.0
 
Sept. 28, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 10.5 μg/m3 (10) 5.1 μg/m3 (21) 26.0
 
Sept. 28, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 11.3 μg/m3 (10) 5.3 μg/m3 (22) 26.0
 
Sept. 28, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 8.1 μg/m3 (7) 4.4 μg/m3 (18) 25.0
 
Sept. 28, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 9.2 μg/m3 (8) 4.0 μg/m3 (17) 23.0
 
Sept. 28, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 8.7 μg/m3 (8) 4.1 μg/m3 (17) 22.0
 
Sept. 28, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 2.7 μg/m3 (2) 1.5 μg/m3 (6) 20.0
 
Sept. 28, 2020, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 4.4 μg/m3 (4) 1.1 μg/m3 (5) 20.0
 
Sept. 28, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 3.3 μg/m3 (3) 1.2 μg/m3 (5) 20.0
 
Sept. 28, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 2.9 μg/m3 (3) 1.0 μg/m3 (4) 22.0
 
Sept. 28, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 1.8 μg/m3 (2) 0.9 μg/m3 (4) 22.0
 
Sept. 28, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 22.0
 
Sept. 28, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 2.8 μg/m3 (3) 2.0 μg/m3 (8) 22.0
 
Sept. 28, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 3.6 μg/m3 (3) 2.9 μg/m3 (12) 23.0
 
Sept. 28, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.2 μg/m3 (7) 4.5 μg/m3 (19) 19.0
 
Sept. 28, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 16.4 μg/m3 (15) 8.4 μg/m3 (35) 35.0
 
Sept. 28, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 19.4 μg/m3 (18) 9.8 μg/m3 (41) 41.0
 
Sept. 28, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 18.9 μg/m3 (17) 9.7 μg/m3 (40) 40.0
 
Sept. 28, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 17.0 μg/m3 (15) 8.6 μg/m3 (36) 36.0
 
Sept. 28, 2020, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 14.4 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
Sept. 27, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 16.5 μg/m3 (15) 8.8 μg/m3 (37) 37.0
 
Sept. 27, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 17.8 μg/m3 (16) 9.1 μg/m3 (38) 38.0
 
Sept. 27, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 20.3 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
Sept. 27, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 19.7 μg/m3 (18) 8.8 μg/m3 (37) 37.0
 
Sept. 27, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 13.8 μg/m3 (13) 6.7 μg/m3 (28) 28.0
 
Sept. 27, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 17.8 μg/m3 (16) 9.0 μg/m3 (38) 38.0
 
Sept. 27, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 15.0 μg/m3 (14) 7.6 μg/m3 (32) 32.0
 
Sept. 27, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 19.9 μg/m3 (18) 8.9 μg/m3 (37) 37.0
 
Sept. 27, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 15.7 μg/m3 (14) 6.9 μg/m3 (29) 29.0
 
Sept. 27, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 12.7 μg/m3 (12) 5.2 μg/m3 (22) 25.0
 
Sept. 27, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 11.2 μg/m3 (10) 4.7 μg/m3 (20) 25.0
 
Sept. 27, 2020, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 8.3 μg/m3 (8) 4.2 μg/m3 (18) 22.0
 
Sept. 27, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 6.4 μg/m3 (6) 4.0 μg/m3 (17) 19.0
 
Sept. 27, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 18.0
 
Sept. 27, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 6.5 μg/m3 (6) 4.2 μg/m3 (18) 19.0
 
Sept. 27, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 12.1 μg/m3 (11) 6.5 μg/m3 (27) 27.0
 
Sept. 27, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 15.1 μg/m3 (14) 7.4 μg/m3 (31) 31.0
 
Sept. 27, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 14.0 μg/m3 (13) 6.5 μg/m3 (27) 27.0
 
Sept. 27, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.7 μg/m3 (11) 5.7 μg/m3 (24) 24.0
 
Sept. 27, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 12.6 μg/m3 (11) 5.8 μg/m3 (24) 24.0
 
Sept. 27, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 13.0 μg/m3 (12) 5.7 μg/m3 (24) 26.0
 
Sept. 27, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 11.6 μg/m3 (11) 5.5 μg/m3 (23) 28.0
 
Sept. 27, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 10.4 μg/m3 (9) 4.9 μg/m3 (20) 30.0
 
Sept. 27, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 13.0 μg/m3 (12) 6.2 μg/m3 (26) 30.0
 
Sept. 26, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 13.0 μg/m3 (12) 5.7 μg/m3 (24) 33.0
 
Sept. 26, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 11.8 μg/m3 (11) 5.3 μg/m3 (22) 37.0
 
Sept. 26, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 11.3 μg/m3 (10) 5.2 μg/m3 (22) 38.0
 
Sept. 26, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 11.6 μg/m3 (11) 5.1 μg/m3 (21) 38.0
 
Sept. 26, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 11.0 μg/m3 (10) 5.3 μg/m3 (22) 39.0
 
Sept. 26, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 12.0 μg/m3 (11) 6.7 μg/m3 (28) 41.0
 
Sept. 26, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 14.8 μg/m3 (13) 8.9 μg/m3 (37) 41.0
 
Sept. 26, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 14.8 μg/m3 (13) 9.2 μg/m3 (38) 38.0
 
Sept. 26, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 16.1 μg/m3 (15) 10.4 μg/m3 (43) 43.0
 
Sept. 26, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 17.1 μg/m3 (16) 11.0 μg/m3 (46) 46.0
 
Sept. 26, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 18.5 μg/m3 (17) 11.3 μg/m3 (47) 47.0
 
Sept. 26, 2020, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 19.9 μg/m3 (18) 12.0 μg/m3 (50) 50.0
 
Sept. 26, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 19.8 μg/m3 (18) 14.0 μg/m3 (54) 54.0
 
Sept. 26, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 18.9 μg/m3 (17) 14.5 μg/m3 (55) 55.0
 
Sept. 26, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 20.5 μg/m3 (19) 14.6 μg/m3 (56) 56.0
 
Sept. 26, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 19.6 μg/m3 (18) 13.6 μg/m3 (53) 53.0
 
Sept. 26, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 19.9 μg/m3 (18) 13.3 μg/m3 (53) 53.0
 
Sept. 26, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 22.4 μg/m3 (20) 13.5 μg/m3 (53) 53.0
 
Sept. 26, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.4 μg/m3 (19) 13.2 μg/m3 (53) 53.0
 
Sept. 26, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 21.2 μg/m3 (19) 13.3 μg/m3 (53) 53.0
 
Sept. 26, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 22.3 μg/m3 (20) 14.2 μg/m3 (55) 55.0
 
Sept. 26, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 25.1 μg/m3 (23) 14.8 μg/m3 (56) 56.0
 
Sept. 26, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 25.7 μg/m3 (23) 14.9 μg/m3 (56) 56.0
 
Sept. 26, 2020, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 33.2 μg/m3 (30) 15.8 μg/m3 (58) 58.0
 
Sept. 25, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 30.0 μg/m3 (27) 15.8 μg/m3 (58) 58.0
 
Sept. 25, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 29.8 μg/m3 (27) 16.1 μg/m3 (59) 59.0
 
Sept. 25, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 33.6 μg/m3 (31) 16.8 μg/m3 (60) 60.0
 
Sept. 25, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 76.0 ppb (59) N/A 42.4 μg/m3 (39) 21.7 μg/m3 (71) 71.0
 
Sept. 25, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (54) N/A 40.5 μg/m3 (37) 19.4 μg/m3 (66) 66.0
 
Sept. 25, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (54) N/A 34.5 μg/m3 (31) 16.5 μg/m3 (60) 60.0
 
Sept. 25, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A 40.5 μg/m3 (37) 16.9 μg/m3 (60) 60.0
 
Sept. 25, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 33.8 μg/m3 (31) 16.6 μg/m3 (60) 60.0
 
Sept. 25, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 34.9 μg/m3 (32) 16.8 μg/m3 (60) 60.0
 
Sept. 25, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 34.2 μg/m3 (31) 16.0 μg/m3 (59) 59.0
 
Sept. 25, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 29.7 μg/m3 (27) 16.4 μg/m3 (59) 59.0
 
Sept. 25, 2020, noon N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 32.7 μg/m3 (30) 16.6 μg/m3 (60) 60.0
 
Sept. 25, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 36.9 μg/m3 (34) 19.8 μg/m3 (67) 67.0
 
Sept. 25, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 29.0 μg/m3 (26) 19.4 μg/m3 (66) 66.0
 
Sept. 25, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 26.8 μg/m3 (24) 17.5 μg/m3 (62) 62.0
 
Sept. 25, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 27.6 μg/m3 (25) 16.5 μg/m3 (60) 60.0
 
Sept. 25, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 26.6 μg/m3 (24) 15.6 μg/m3 (58) 58.0
 
Sept. 25, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 26.0 μg/m3 (24) 15.5 μg/m3 (57) 57.0
 
Sept. 25, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.9 μg/m3 (27) 15.8 μg/m3 (58) 58.0
 
Sept. 25, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 28.3 μg/m3 (26) 15.0 μg/m3 (56) 56.0
 
Sept. 25, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 27.4 μg/m3 (25) 14.6 μg/m3 (56) 56.0
 
Sept. 25, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 29.4 μg/m3 (27) 14.3 μg/m3 (55) 55.0
 
Sept. 25, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 27.9 μg/m3 (25) 14.0 μg/m3 (54) 54.0
 
Sept. 25, 2020, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 30.1 μg/m3 (27) 13.9 μg/m3 (54) 54.0
 
Sept. 24, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 30.7 μg/m3 (28) 14.3 μg/m3 (55) 55.0
 
Sept. 24, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 28.6 μg/m3 (26) 14.3 μg/m3 (55) 55.0
 
Sept. 24, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A 29.1 μg/m3 (26) 13.2 μg/m3 (53) 53.0
 
Sept. 24, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (50) N/A 28.4 μg/m3 (26) 13.1 μg/m3 (52) 52.0
 
Sept. 24, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (49) N/A 28.1 μg/m3 (26) 12.5 μg/m3 (51) 51.0
 
Sept. 24, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 29.2 μg/m3 (27) 11.6 μg/m3 (48) 48.0
 
Sept. 24, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 28.0 μg/m3 (25) 12.9 μg/m3 (52) 52.0
 
Sept. 24, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 28.6 μg/m3 (26) 13.0 μg/m3 (52) 52.0
 
Sept. 24, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 25.2 μg/m3 (23) 12.6 μg/m3 (51) 51.0
 
Sept. 24, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 29.4 μg/m3 (27) 13.0 μg/m3 (52) 52.0
 
Sept. 24, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 31.6 μg/m3 (29) 13.3 μg/m3 (53) 53.0
 
Sept. 24, 2020, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 30.6 μg/m3 (28) 13.2 μg/m3 (53) 53.0
 
Sept. 24, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 21.4 μg/m3 (19) 12.4 μg/m3 (51) 51.0
 
Sept. 24, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 19.0 μg/m3 (17) 11.9 μg/m3 (50) 50.0
 
Sept. 24, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 18.0 μg/m3 (16) 11.2 μg/m3 (47) 47.0
 
Sept. 24, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 18.0 μg/m3 (16) 10.9 μg/m3 (45) 45.0
 
Sept. 24, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 18.0 μg/m3 (16) 10.6 μg/m3 (44) 44.0
 
Sept. 24, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 18.0 μg/m3 (16) 10.5 μg/m3 (44) 44.0
 
Sept. 24, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 10.7 μg/m3 (45) 45.0
 
Sept. 24, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 18.0 μg/m3 (16) 10.6 μg/m3 (44) 44.0
 
Sept. 24, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 19.0 μg/m3 (17) 11.2 μg/m3 (47) 47.0
 
Sept. 24, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 22.0 μg/m3 (20) 11.3 μg/m3 (47) 47.0
 
Sept. 24, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 20.0 μg/m3 (18) 10.9 μg/m3 (45) 45.0
 
Sept. 24, 2020, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 23.0 μg/m3 (21) 12.1 μg/m3 (50) 50.0
 
Sept. 23, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 24.0 μg/m3 (22) 11.9 μg/m3 (50) 50.0
 
Sept. 23, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 23.0 μg/m3 (21) 11.3 μg/m3 (47) 47.0
 
Sept. 23, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 26.0 μg/m3 (24) 11.4 μg/m3 (48) 48.0
 
Sept. 23, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 25.0 μg/m3 (23) 11.7 μg/m3 (49) 49.0
 
Sept. 23, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 25.0 μg/m3 (23) 10.9 μg/m3 (45) 45.0
 
Sept. 23, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A N/A N/A 46.0
 
Sept. 23, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A N/A 42.0
 
Sept. 23, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 18.0 μg/m3 (16) 7.1 μg/m3 (30) 40.0
 
Sept. 23, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 17.0 μg/m3 (15) 5.9 μg/m3 (25) 37.0
 
Sept. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 16.0 μg/m3 (15) 5.4 μg/m3 (23) 31.0
 
Sept. 23, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 14.0 μg/m3 (13) 5.1 μg/m3 (21) 25.0
 
Sept. 23, 2020, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 11.0 μg/m3 (10) 5.1 μg/m3 (21) 21.0
 
Sept. 23, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 10.0 μg/m3 (9) 4.8 μg/m3 (20) 20.0
 
Sept. 23, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 11.0 μg/m3 (10) 5.1 μg/m3 (21) 21.0
 
Sept. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 10.0 μg/m3 (9) 4.4 μg/m3 (18) 19.0
 
Sept. 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 21.0
 
Sept. 23, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 9.0 μg/m3 (8) 4.2 μg/m3 (18) 24.0
 
Sept. 23, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 12.0 μg/m3 (11) 4.1 μg/m3 (17) 26.0
 
Sept. 23, 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) 4.0 μg/m3 (17) 17.0
 
Sept. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 25.0
 
Sept. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 10.0 μg/m3 (9) 3.9 μg/m3 (16) 27.0
 
Sept. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 3.7 μg/m3 (15) 28.0
 
Sept. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 13.0 μg/m3 (12) 3.5 μg/m3 (15) 30.0
 
Sept. 23, 2020, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 12.0 μg/m3 (11) 3.4 μg/m3 (14) 31.0
 
Sept. 22, 2020, 11 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) 4.4 μg/m3 (18) 28.0