ID: 1659

AQSQID: 090110124

Site Name: Groton Fort Griswold

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

Updated: July 28, 2021, 7:53 p.m.

Location: Groton (Long Hill), CT

Reporting: True, Located: True

Current AQI: 36.0

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
July 28, 2021, 6 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) 7.9 μg/m3 (33) 36.0
 
July 28, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 14.0 μg/m3 (13) 9.3 μg/m3 (39) 39.0
 
July 28, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 15.0 μg/m3 (14) 10.8 μg/m3 (46) 46.0
 
July 28, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 18.0 μg/m3 (17) 12.2 μg/m3 (52) 52.0
 
July 28, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 17.0 μg/m3 (16) 11.9 μg/m3 (50) 50.0
 
July 28, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 18.0 μg/m3 (17) 13.0 μg/m3 (53) 53.0
 
July 28, 2021, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 21.0 μg/m3 (20) 14.1 μg/m3 (56) 56.0
 
July 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 22.0 μg/m3 (21) 14.9 μg/m3 (57) 57.0
 
July 28, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 24.0 μg/m3 (23) 15.9 μg/m3 (59) 59.0
 
July 28, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 24.0 μg/m3 (23) 16.5 μg/m3 (61) 61.0
 
July 28, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 24.0 μg/m3 (23) 16.6 μg/m3 (61) 61.0
 
July 28, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 23.0 μg/m3 (22) 16.6 μg/m3 (61) 61.0
 
July 28, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 22.0 μg/m3 (21) 16.5 μg/m3 (61) 61.0
 
July 28, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 15.9 μg/m3 (59) 59.0
 
July 28, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 21.0 μg/m3 (20) 16.1 μg/m3 (60) 60.0
 
July 28, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 21.0 μg/m3 (20) 16.1 μg/m3 (60) 60.0
 
July 28, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 22.0 μg/m3 (21) 16.1 μg/m3 (60) 60.0
 
July 28, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 21.0 μg/m3 (20) 14.7 μg/m3 (57) 57.0
 
July 28, 2021, midnight N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 33.0 μg/m3 (31) 22.5 μg/m3 (73) 73.0
 
July 27, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A 42.0 μg/m3 (39) 31.2 μg/m3 (92) 92.0
 
July 27, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 44.0 μg/m3 (41) 31.6 μg/m3 (93) 93.0
 
July 27, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 31.0 μg/m3 (29) 20.8 μg/m3 (70) 70.0
 
July 27, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A 37.0 μg/m3 (35) 24.0 μg/m3 (77) 91.0
 
July 27, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A 34.0 μg/m3 (32) 23.4 μg/m3 (75) 78.0
 
July 27, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 34.0 μg/m3 (32) 22.9 μg/m3 (74) 74.0
 
July 27, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 43.0 μg/m3 (40) 32.4 μg/m3 (94) 94.0
 
July 27, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 46.0 μg/m3 (43) 33.6 μg/m3 (97) 97.0
 
July 27, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 47.0 μg/m3 (44) 36.2 μg/m3 (103) 103.0
 
July 27, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 50.0 μg/m3 (47) 36.4 μg/m3 (104) 104.0
 
July 27, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 55.0 μg/m3 (51) 38.2 μg/m3 (108) 108.0
 
July 27, 2021, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 54.0 μg/m3 (50) 41.0 μg/m3 (115) 115.0
 
July 27, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 67.0 μg/m3 (57) 52.5 μg/m3 (143) 143.0
 
July 27, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 70.0 μg/m3 (59) 56.2 μg/m3 (152) 152.0
 
July 27, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 63.0 μg/m3 (55) 51.3 μg/m3 (140) 140.0
 
July 27, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 65.0 μg/m3 (56) 53.2 μg/m3 (145) 145.0
 
July 27, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 85.0 μg/m3 (66) 68.6 μg/m3 (158) 158.0
 
July 27, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 101.0 μg/m3 (74) 81.1 μg/m3 (165) 165.0
 
July 27, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 99.0 μg/m3 (73) 80.4 μg/m3 (164) 164.0
 
July 27, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 96.0 μg/m3 (72) 76.5 μg/m3 (162) 162.0
 
July 27, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 68.0 μg/m3 (58) 55.1 μg/m3 (150) 150.0
 
July 27, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 51.0 μg/m3 (48) 41.2 μg/m3 (116) 116.0
 
July 27, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 43.0 μg/m3 (40) 33.3 μg/m3 (96) 96.0
 
July 27, 2021, midnight N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 41.0 μg/m3 (38) 31.4 μg/m3 (92) 92.0
 
July 26, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 38.0 μg/m3 (36) 29.3 μg/m3 (88) 88.0
 
July 26, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A 37.0 μg/m3 (35) 28.7 μg/m3 (86) 86.0
 
July 26, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (100) N/A 36.0 μg/m3 (34) 27.8 μg/m3 (85) 100.0
 
July 26, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 37.0 μg/m3 (35) 29.2 μg/m3 (87) 87.0
 
July 26, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 38.0 μg/m3 (36) 30.7 μg/m3 (91) 91.0
 
July 26, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 37.0 μg/m3 (35) 29.7 μg/m3 (89) 89.0
 
July 26, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 34.0 μg/m3 (32) 25.5 μg/m3 (80) 80.0
 
July 26, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 29.0 μg/m3 (27) 20.2 μg/m3 (69) 69.0
 
July 26, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 29.0 μg/m3 (27) 19.7 μg/m3 (67) 67.0
 
July 26, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 35.0 μg/m3 (33) 23.4 μg/m3 (75) 75.0
 
July 26, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 23.0 μg/m3 (22) 15.7 μg/m3 (59) 59.0
 
July 26, 2021, noon N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 16.0 μg/m3 (15) 10.3 μg/m3 (43) 43.0
 
July 26, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 13.0 μg/m3 (13) 8.7 μg/m3 (37) 37.0
 
July 26, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 12.0 μg/m3 (12) 8.4 μg/m3 (36) 36.0
 
July 26, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 15.0 μg/m3 (14) 10.3 μg/m3 (43) 43.0
 
July 26, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 22.0 μg/m3 (21) 12.5 μg/m3 (52) 52.0
 
July 26, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 22.0 μg/m3 (21) 12.6 μg/m3 (53) 53.0
 
July 26, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 21.0 μg/m3 (20) 12.3 μg/m3 (52) 52.0
 
July 26, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 11.5 μg/m3 (48) 48.0
 
July 26, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 20.0 μg/m3 (19) 11.5 μg/m3 (48) 48.0
 
July 26, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 21.0 μg/m3 (20) 11.7 μg/m3 (49) 49.0
 
July 26, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 21.0 μg/m3 (20) 11.9 μg/m3 (50) 50.0
 
July 26, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 23.0 μg/m3 (22) 12.0 μg/m3 (50) 50.0
 
July 26, 2021, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 22.0 μg/m3 (21) 12.3 μg/m3 (52) 52.0
 
July 25, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 22.0 μg/m3 (21) 11.5 μg/m3 (48) 48.0
 
July 25, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 23.0 μg/m3 (22) 11.7 μg/m3 (49) 49.0
 
July 25, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 24.0 μg/m3 (23) 12.2 μg/m3 (52) 52.0
 
July 25, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 24.0 μg/m3 (23) 12.2 μg/m3 (52) 52.0
 
July 25, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 28.0 μg/m3 (26) 13.9 μg/m3 (55) 55.0
 
July 25, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 27.0 μg/m3 (25) 13.9 μg/m3 (55) 55.0
 
July 25, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 24.0 μg/m3 (23) 12.9 μg/m3 (53) 53.0
 
July 25, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 25.0 μg/m3 (24) 13.6 μg/m3 (55) 55.0
 
July 25, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 27.0 μg/m3 (25) 14.1 μg/m3 (56) 56.0
 
July 25, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 23.0 μg/m3 (22) 12.9 μg/m3 (53) 53.0
 
July 25, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 20.0 μg/m3 (19) 12.0 μg/m3 (50) 50.0
 
July 25, 2021, noon N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 18.0 μg/m3 (17) 11.6 μg/m3 (49) 49.0
 
July 25, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 18.0 μg/m3 (17) 11.7 μg/m3 (49) 49.0
 
July 25, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 17.0 μg/m3 (16) 10.8 μg/m3 (46) 46.0
 
July 25, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 14.0 μg/m3 (13) 9.1 μg/m3 (38) 40.0
 
July 25, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 13.0 μg/m3 (13) 8.7 μg/m3 (37) 38.0
 
July 25, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 13.0 μg/m3 (13) 8.7 μg/m3 (37) 37.0
 
July 25, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 13.0 μg/m3 (13) 8.7 μg/m3 (37) 37.0
 
July 25, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 9.4 μg/m3 (40) 40.0
 
July 25, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 14.0 μg/m3 (13) 9.4 μg/m3 (40) 40.0
 
July 25, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 15.0 μg/m3 (14) 9.4 μg/m3 (40) 40.0
 
July 25, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 14.0 μg/m3 (13) 9.3 μg/m3 (39) 39.0
 
July 25, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 14.0 μg/m3 (13) 8.8 μg/m3 (37) 38.0
 
July 25, 2021, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 15.0 μg/m3 (14) 9.0 μg/m3 (38) 39.0
 
July 24, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 17.0 μg/m3 (16) 9.3 μg/m3 (39) 42.0
 
July 24, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 18.0 μg/m3 (17) 10.5 μg/m3 (44) 47.0
 
July 24, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 17.0 μg/m3 (16) 11.4 μg/m3 (48) 49.0
 
July 24, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 20.0 μg/m3 (19) 12.1 μg/m3 (51) 51.0
 
July 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 18.0 μg/m3 (17) 11.7 μg/m3 (49) 58.0
 
July 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 19.0 μg/m3 (18) 12.2 μg/m3 (52) 52.0
 
July 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 21.0 μg/m3 (20) 12.2 μg/m3 (52) 52.0
 
July 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 20.0 μg/m3 (19) 11.8 μg/m3 (50) 50.0
 
July 24, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 20.0 μg/m3 (19) 11.3 μg/m3 (48) 48.0
 
July 24, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 16.0 μg/m3 (15) 9.3 μg/m3 (39) 39.0
 
July 24, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 16.0 μg/m3 (15) 8.8 μg/m3 (37) 37.0
 
July 24, 2021, noon N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 15.0 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
July 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 16.0 μg/m3 (15) 9.3 μg/m3 (39) 39.0
 
July 24, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 15.0 μg/m3 (14) 9.2 μg/m3 (39) 39.0
 
July 24, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 14.0 μg/m3 (13) 9.1 μg/m3 (38) 38.0
 
July 24, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 15.0 μg/m3 (14) 9.4 μg/m3 (40) 40.0
 
July 24, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 17.0 μg/m3 (16) 10.5 μg/m3 (44) 44.0
 
July 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 18.0 μg/m3 (17) 10.7 μg/m3 (45) 45.0
 
July 24, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 10.7 μg/m3 (45) 45.0
 
July 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 19.0 μg/m3 (18) 11.2 μg/m3 (47) 47.0
 
July 24, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 16.0 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
July 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 17.0 μg/m3 (16) 10.7 μg/m3 (45) 45.0
 
July 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 17.0 μg/m3 (16) 10.2 μg/m3 (43) 43.0
 
July 24, 2021, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 15.0 μg/m3 (14) 9.2 μg/m3 (39) 39.0
 
July 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 16.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
July 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 18.0 μg/m3 (17) 10.8 μg/m3 (46) 46.0
 
July 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 17.0 μg/m3 (16) 10.5 μg/m3 (44) 44.0
 
July 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 17.0 μg/m3 (16) 10.6 μg/m3 (45) 45.0
 
July 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 15.0 μg/m3 (14) 9.9 μg/m3 (42) 42.0
 
July 23, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 16.0 μg/m3 (15) 11.2 μg/m3 (47) 47.0
 
July 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 17.0 μg/m3 (16) 11.9 μg/m3 (50) 50.0
 
July 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 17.0 μg/m3 (16) 10.9 μg/m3 (46) 46.0
 
July 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 16.0 μg/m3 (15) 9.7 μg/m3 (41) 41.0
 
July 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 16.0 μg/m3 (15) 9.5 μg/m3 (40) 40.0
 
July 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 20.0 μg/m3 (19) 9.1 μg/m3 (38) 38.0
 
July 23, 2021, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 16.0 μg/m3 (15) 8.7 μg/m3 (37) 37.0
 
July 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 15.0 μg/m3 (14) 8.6 μg/m3 (36) 36.0
 
July 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 15.0 μg/m3 (14) 8.3 μg/m3 (35) 35.0
 
July 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 15.0 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
July 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 15.0 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
July 23, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 14.0 μg/m3 (13) 7.8 μg/m3 (33) 33.0
 
July 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 13.0 μg/m3 (13) 7.5 μg/m3 (32) 32.0
 
July 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
July 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 12.0 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
July 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
July 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 15.0 μg/m3 (14) 9.2 μg/m3 (39) 39.0
 
July 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 17.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
July 23, 2021, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 15.0 μg/m3 (14) 9.2 μg/m3 (39) 39.0
 
July 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 19.0 μg/m3 (18) 10.6 μg/m3 (45) 45.0
 
July 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 16.0 μg/m3 (15) 9.9 μg/m3 (42) 42.0
 
July 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 18.0 μg/m3 (17) 10.5 μg/m3 (44) 44.0
 
July 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 18.0 μg/m3 (17) 10.6 μg/m3 (45) 45.0
 
July 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 17.0 μg/m3 (16) 10.3 μg/m3 (43) 43.0
 
July 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 18.0 μg/m3 (17) 10.5 μg/m3 (44) 44.0
 
July 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 17.0 μg/m3 (16) 10.2 μg/m3 (43) 43.0
 
July 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 15.0 μg/m3 (14) 9.7 μg/m3 (41) 41.0
 
July 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 24.0 μg/m3 (23) 10.6 μg/m3 (45) 45.0
 
July 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 17.0 μg/m3 (16) 9.9 μg/m3 (42) 42.0
 
July 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 17.0 μg/m3 (16) 10.2 μg/m3 (43) 43.0
 
July 22, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 18.0 μg/m3 (17) 10.4 μg/m3 (44) 44.0
 
July 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 16.0 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
July 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 17.0 μg/m3 (16) 10.5 μg/m3 (44) 44.0
 
July 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 16.0 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
July 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 17.0 μg/m3 (16) 11.1 μg/m3 (47) 47.0
 
July 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 17.0 μg/m3 (16) 11.6 μg/m3 (49) 49.0
 
July 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 17.0 μg/m3 (16) 11.5 μg/m3 (48) 48.0
 
July 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 11.1 μg/m3 (47) 47.0
 
July 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 18.0 μg/m3 (17) 11.6 μg/m3 (49) 49.0
 
July 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 20.0 μg/m3 (19) 13.0 μg/m3 (53) 53.0
 
July 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 22.0 μg/m3 (21) 12.9 μg/m3 (53) 53.0
 
July 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 23.0 μg/m3 (22) 14.6 μg/m3 (57) 57.0
 
July 22, 2021, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 23.0 μg/m3 (22) 15.9 μg/m3 (59) 59.0
 
July 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 32.0 μg/m3 (30) 24.1 μg/m3 (77) 77.0
 
July 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 29.0 μg/m3 (27) 20.9 μg/m3 (70) 70.0
 
July 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 25.0 μg/m3 (24) 18.3 μg/m3 (65) 65.0
 
July 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 25.0 μg/m3 (24) 18.1 μg/m3 (64) 64.0
 
July 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 30.0 μg/m3 (28) 21.0 μg/m3 (70) 70.0