ID: 265

AQSQID: 090011123

Site Name: Danbury

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

Updated: April 21, 2021, 8:44 p.m.

Location: Danbury (Germantown), CT

Reporting: True, Located: True

Current AQI: 35.0

Danbury (Germantown) CT, US: 41.4014, -73.4447

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 13.1 μg/m3 (13) 7.0 μg/m3 (30) 35.0
 
April 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 20.6 μg/m3 (20) 10.3 μg/m3 (43) 55.0
 
April 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 20.9 μg/m3 (20) 10.3 μg/m3 (43) 51.0
 
April 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A N/A 48.0
 
April 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 19.1 μg/m3 (18) 8.8 μg/m3 (37) 47.0
 
April 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 18.4 μg/m3 (18) 8.3 μg/m3 (35) 45.0
 
April 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 18.5 μg/m3 (18) 8.2 μg/m3 (35) 42.0
 
April 21, 2021, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 19.9 μg/m3 (19) 9.0 μg/m3 (38) 38.0
 
April 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 21.2 μg/m3 (20) 8.9 μg/m3 (38) 38.0
 
April 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 13.0 μg/m3 (13) 6.7 μg/m3 (28) 28.0
 
April 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 13.3 μg/m3 (13) 7.1 μg/m3 (30) 30.0
 
April 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 12.5 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
April 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 11.2 μg/m3 (11) 5.6 μg/m3 (24) 24.0
 
April 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 9.6 μg/m3 (9) 5.3 μg/m3 (23) 30.0
 
April 21, 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) 5.6 μg/m3 (24) 24.0
 
April 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 10.5 μg/m3 (10) 5.8 μg/m3 (25) 30.0
 
April 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 12.0 μg/m3 (12) 5.7 μg/m3 (24) 31.0
 
April 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 17.5 μg/m3 (17) 8.8 μg/m3 (37) 37.0
 
April 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 20.6 μg/m3 (20) 9.6 μg/m3 (40) 40.0
 
April 21, 2021, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 20.8 μg/m3 (20) 9.9 μg/m3 (42) 47.0
 
April 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 21.7 μg/m3 (21) 10.1 μg/m3 (43) 49.0
 
April 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 23.0 μg/m3 (22) 9.4 μg/m3 (40) 58.0
 
April 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 20.1 μg/m3 (19) 7.6 μg/m3 (32) 58.0
 
April 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 20.8 μg/m3 (20) 8.0 μg/m3 (34) 61.0
 
April 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 18.4 μg/m3 (18) 7.5 μg/m3 (32) 55.0
 
April 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 22.3 μg/m3 (21) 7.0 μg/m3 (30) 51.0
 
April 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 23.2 μg/m3 (22) 7.2 μg/m3 (31) 50.0
 
April 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 17.7 μg/m3 (17) 7.5 μg/m3 (32) 47.0
 
April 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 17.3 μg/m3 (17) 7.5 μg/m3 (32) 44.0
 
April 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 15.0 μg/m3 (14) 7.3 μg/m3 (31) 39.0
 
April 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 14.8 μg/m3 (14) 7.8 μg/m3 (33) 37.0
 
April 20, 2021, noon N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 31.0 μg/m3 (29) 14.0 μg/m3 (55) 55.0
 
April 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 26.6 μg/m3 (25) 12.4 μg/m3 (52) 52.0
 
April 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 21.2 μg/m3 (20) 11.0 μg/m3 (46) 46.0
 
April 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 21.9 μg/m3 (21) 13.1 μg/m3 (54) 54.0
 
April 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 19.8 μg/m3 (19) 12.1 μg/m3 (51) 51.0
 
April 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 26.7 μg/m3 (25) 16.6 μg/m3 (61) 61.0
 
April 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 17.0 μg/m3 (16) 10.6 μg/m3 (45) 45.0
 
April 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 14.9 μg/m3 (57) 57.0
 
April 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 14.1 μg/m3 (14) 8.9 μg/m3 (38) 38.0
 
April 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 14.6 μg/m3 (14) 8.4 μg/m3 (36) 36.0
 
April 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 12.1 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
April 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 13.1 μg/m3 (13) 7.4 μg/m3 (31) 32.0
 
April 20, 2021, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 15.1 μg/m3 (14) 8.3 μg/m3 (35) 35.0
 
April 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 13.4 μg/m3 (13) 6.8 μg/m3 (29) 37.0
 
April 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 13.8 μg/m3 (13) 7.4 μg/m3 (31) 39.0
 
April 19, 2021, 9 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) 6.7 μg/m3 (28) 38.0
 
April 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 11.0 μg/m3 (11) 5.7 μg/m3 (24) 38.0
 
April 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 10.6 μg/m3 (10) 5.5 μg/m3 (23) 40.0
 
April 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 13.0 μg/m3 (13) 5.7 μg/m3 (24) 41.0
 
April 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 10.3 μg/m3 (10) 5.0 μg/m3 (21) 41.0
 
April 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 9.8 μg/m3 (10) 4.5 μg/m3 (19) 41.0
 
April 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 9.9 μg/m3 (10) 4.5 μg/m3 (19) 39.0
 
April 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 11.5 μg/m3 (11) 4.8 μg/m3 (20) 36.0
 
April 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 23.9 μg/m3 (23) 8.3 μg/m3 (35) 35.0
 
April 19, 2021, noon N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 27.5 μg/m3 (26) 12.3 μg/m3 (52) 52.0
 
April 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 35.6 μg/m3 (33) 12.7 μg/m3 (53) 53.0
 
April 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 22.1 μg/m3 (21) 10.9 μg/m3 (46) 46.0
 
April 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 20.2 μg/m3 (19) 11.3 μg/m3 (48) 48.0
 
April 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 19.8 μg/m3 (19) 11.3 μg/m3 (48) 48.0
 
April 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 18.3 μg/m3 (17) 10.7 μg/m3 (45) 45.0
 
April 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 17.9 μg/m3 (17) 10.7 μg/m3 (45) 45.0
 
April 19, 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) 10.4 μg/m3 (44) 44.0
 
April 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 16.7 μg/m3 (16) 9.9 μg/m3 (42) 42.0
 
April 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 19.5 μg/m3 (19) 11.5 μg/m3 (48) 48.0
 
April 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 20.2 μg/m3 (19) 12.7 μg/m3 (53) 53.0
 
April 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 15.3 μg/m3 (15) 8.2 μg/m3 (35) 35.0
 
April 19, 2021, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 13.0 μg/m3 (13) 6.9 μg/m3 (29) 29.0
 
April 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 12.8 μg/m3 (12) 6.9 μg/m3 (29) 31.0
 
April 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 12.0 μg/m3 (12) 6.2 μg/m3 (26) 31.0
 
April 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 13.0 μg/m3 (13) 5.9 μg/m3 (25) 33.0
 
April 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 10.7 μg/m3 (10) 5.5 μg/m3 (23) 34.0
 
April 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 10.8 μg/m3 (10) 5.4 μg/m3 (23) 36.0
 
April 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 10.6 μg/m3 (10) 5.0 μg/m3 (21) 38.0
 
April 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 10.2 μg/m3 (10) 5.0 μg/m3 (21) 39.0
 
April 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 10.5 μg/m3 (10) 5.1 μg/m3 (22) 39.0
 
April 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 10.7 μg/m3 (10) 4.8 μg/m3 (20) 38.0
 
April 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 9.7 μg/m3 (9) 4.9 μg/m3 (21) 36.0
 
April 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 9.5 μg/m3 (9) 5.0 μg/m3 (21) 32.0
 
April 18, 2021, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 10.1 μg/m3 (10) 5.1 μg/m3 (22) 29.0
 
April 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 10.5 μg/m3 (10) 5.6 μg/m3 (24) 24.0
 
April 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 11.0 μg/m3 (11) 5.8 μg/m3 (25) 25.0
 
April 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 10.3 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
April 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 11.1 μg/m3 (11) 6.5 μg/m3 (28) 28.0
 
April 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 11.4 μg/m3 (11) 7.3 μg/m3 (31) 31.0
 
April 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 11.1 μg/m3 (11) 6.5 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 10.7 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
April 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 13.5 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
April 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 14.1 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
April 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 11.9 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
April 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 11.2 μg/m3 (11) 6.9 μg/m3 (29) 29.0
 
April 18, 2021, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 8.8 μg/m3 (9) 4.6 μg/m3 (20) 30.0
 
April 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 7.8 μg/m3 (8) 4.0 μg/m3 (17) 33.0
 
April 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 6.3 μg/m3 (6) 3.0 μg/m3 (13) 33.0
 
April 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 6.2 μg/m3 (6) 2.9 μg/m3 (13) 34.0
 
April 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 5.5 μg/m3 (6) 2.8 μg/m3 (12) 36.0
 
April 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 3.3 μg/m3 (4) 1.6 μg/m3 (7) 36.0
 
April 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 3.3 μg/m3 (4) 1.4 μg/m3 (6) 35.0
 
April 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 3.7 μg/m3 (4) 1.2 μg/m3 (5) 35.0
 
April 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 2.7 μg/m3 (3) 1.7 μg/m3 (8) 33.0
 
April 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 4.2 μg/m3 (4) 1.7 μg/m3 (8) 32.0
 
April 17, 2021, 2 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) 1.4 μg/m3 (6) 32.0
 
April 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 3.1 μg/m3 (3) 1.8 μg/m3 (8) 31.0
 
April 17, 2021, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 4.4 μg/m3 (5) 2.7 μg/m3 (12) 28.0
 
April 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 3.8 μg/m3 (4) 2.6 μg/m3 (11) 28.0
 
April 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 2.7 μg/m3 (3) 2.0 μg/m3 (9) 28.0
 
April 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 3.2 μg/m3 (3) 2.0 μg/m3 (9) 29.0
 
April 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 3.7 μg/m3 (4) 2.4 μg/m3 (10) 29.0
 
April 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 3.7 μg/m3 (4) 1.9 μg/m3 (8) 29.0
 
April 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 3.3 μg/m3 (4) 1.5 μg/m3 (7) 29.0
 
April 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.8 μg/m3 (2) 1.1 μg/m3 (5) 5.0
 
April 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 31.0
 
April 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 32.0
 
April 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 2.6 μg/m3 (3) 1.3 μg/m3 (6) 33.0
 
April 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 3.4 μg/m3 (4) 1.7 μg/m3 (8) 35.0
 
April 17, 2021, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 4.6 μg/m3 (5) 2.4 μg/m3 (10) 34.0
 
April 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 3.5 μg/m3 (4) 2.0 μg/m3 (9) 34.0
 
April 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 3.0 μg/m3 (3) 1.3 μg/m3 (6) 35.0
 
April 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 2.2 μg/m3 (3) 1.0 μg/m3 (5) 35.0
 
April 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 2.2 μg/m3 (3) 0.6 μg/m3 (3) 37.0
 
April 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 1.8 μg/m3 (2) 0.5 μg/m3 (3) 37.0
 
April 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (5) 34.0
 
April 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 10.2 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
April 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 10.1 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
April 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 10.1 μg/m3 (10) 7.0 μg/m3 (30) 30.0
 
April 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 9.8 μg/m3 (10) 6.2 μg/m3 (26) 26.0
 
April 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 9.6 μg/m3 (9) 5.5 μg/m3 (23) 23.0
 
April 16, 2021, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 5.0 μg/m3 (5) 3.9 μg/m3 (17) 25.0
 
April 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 6.6 μg/m3 (7) 4.6 μg/m3 (20) 22.0
 
April 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 5.6 μg/m3 (6) 4.0 μg/m3 (17) 22.0
 
April 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 2.6 μg/m3 (3) 1.9 μg/m3 (8) 27.0
 
April 16, 2021, 8 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) 0.6 μg/m3 (3) 33.0
 
April 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 1.2 μg/m3 (2) 0.6 μg/m3 (3) 32.0
 
April 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 1.6 μg/m3 (2) 0.9 μg/m3 (4) 33.0
 
April 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.7 μg/m3 (4) 1.7 μg/m3 (8) 8.0
 
April 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 3.4 μg/m3 (4) 2.0 μg/m3 (9) 33.0
 
April 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 4.2 μg/m3 (4) 2.4 μg/m3 (10) 34.0
 
April 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 5.3 μg/m3 (5) 2.7 μg/m3 (12) 35.0
 
April 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 3.3 μg/m3 (4) 1.8 μg/m3 (8) 36.0
 
April 16, 2021, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 4.9 μg/m3 (5) 3.1 μg/m3 (13) 35.0
 
April 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 3.1 μg/m3 (3) 1.7 μg/m3 (8) 28.0
 
April 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 1.9 μg/m3 (2) 1.0 μg/m3 (5) 36.0
 
April 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 2.7 μg/m3 (3) 1.3 μg/m3 (6) 35.0
 
April 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 4.1 μg/m3 (4) 1.4 μg/m3 (6) 37.0
 
April 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 2.5 μg/m3 (3) 1.4 μg/m3 (6) 39.0
 
April 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 2.1 μg/m3 (2) 1.3 μg/m3 (6) 38.0
 
April 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 5.4 μg/m3 (5) 3.2 μg/m3 (14) 36.0
 
April 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 10.8 μg/m3 (10) 6.3 μg/m3 (27) 34.0
 
April 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 8.8 μg/m3 (9) 4.8 μg/m3 (20) 30.0
 
April 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 5.5 μg/m3 (6) 3.1 μg/m3 (13) 28.0
 
April 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 4.9 μg/m3 (5) 2.0 μg/m3 (9) 27.0
 
April 15, 2021, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 7.1 μg/m3 (7) 2.9 μg/m3 (13) 25.0
 
April 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 8.8 μg/m3 (9) 4.7 μg/m3 (20) 24.0
 
April 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 15.0 μg/m3 (14) 7.2 μg/m3 (31) 31.0
 
April 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 15.4 μg/m3 (15) 9.7 μg/m3 (41) 41.0
 
April 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 17.9 μg/m3 (17) 11.3 μg/m3 (48) 48.0
 
April 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 19.8 μg/m3 (19) 12.1 μg/m3 (51) 51.0
 
April 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 21.4 μg/m3 (20) 12.7 μg/m3 (53) 53.0
 
April 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.2 μg/m3 (18) 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 19.6 μg/m3 (19) 10.4 μg/m3 (44) 44.0
 
April 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 18.0 μg/m3 (17) 9.3 μg/m3 (39) 39.0
 
April 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 18.3 μg/m3 (17) 8.3 μg/m3 (35) 35.0
 
April 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 15.5 μg/m3 (15) 7.5 μg/m3 (32) 32.0
 
April 15, 2021, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 13.3 μg/m3 (13) 6.4 μg/m3 (27) 36.0
 
April 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 14.6 μg/m3 (14) 6.4 μg/m3 (27) 38.0
 
April 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 14.2 μg/m3 (14) 5.6 μg/m3 (24) 38.0
 
April 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 13.3 μg/m3 (13) 5.0 μg/m3 (21) 39.0
 
April 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 12.8 μg/m3 (12) 4.5 μg/m3 (19) 50.0