ID: 1712

AQSQID: 191130040

Site Name: Public Health

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

Updated: Sept. 21, 2021, 5:05 p.m.

Location: Cedar Rapids (C Ave Nwest), IA

Reporting: True, Located: True

Current AQI: 22.0

Cedar Rapids (C Ave Nwest) IA, US: 41.9767, -91.6878

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 5.1 μg/m3 (22) 22.0
 
Sept. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 5.3 μg/m3 (23) 23.0
 
Sept. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 5.6 μg/m3 (24) 24.0
 
Sept. 21, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 4.7 μg/m3 (20) 20.0
 
Sept. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 4.6 μg/m3 (20) 20.0
 
Sept. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 7.1 μg/m3 (30) 30.0
 
Sept. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 8.3 μg/m3 (35) 35.0
 
Sept. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 8.5 μg/m3 (36) 36.0
 
Sept. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 8.3 μg/m3 (35) 35.0
 
Sept. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 8.2 μg/m3 (35) 35.0
 
Sept. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 8.1 μg/m3 (34) 34.0
 
Sept. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 21, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 7.5 μg/m3 (32) 32.0
 
Sept. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 9.4 μg/m3 (40) 40.0
 
Sept. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 10.2 μg/m3 (43) 43.0
 
Sept. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 9.4 μg/m3 (40) 40.0
 
Sept. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 8.6 μg/m3 (36) 36.0
 
Sept. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 8.9 μg/m3 (38) 38.0
 
Sept. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 8.2 μg/m3 (35) 35.0
 
Sept. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 7.8 μg/m3 (33) 33.0
 
Sept. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 7.9 μg/m3 (33) 33.0
 
Sept. 20, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 7.1 μg/m3 (30) 30.0
 
Sept. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 7.6 μg/m3 (32) 32.0
 
Sept. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 7.3 μg/m3 (31) 31.0
 
Sept. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 6.8 μg/m3 (29) 29.0
 
Sept. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 10.9 μg/m3 (46) 46.0
 
Sept. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 9.7 μg/m3 (41) 41.0
 
Sept. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 43.0 ppb (40) N/A N/A 10.4 μg/m3 (44) 44.0
 
Sept. 20, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 10.8 μg/m3 (46) 46.0
 
Sept. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 8.7 μg/m3 (37) 46.0
 
Sept. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 9.3 μg/m3 (39) 48.0
 
Sept. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 9.3 μg/m3 (39) 50.0
 
Sept. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (49) N/A N/A 9.9 μg/m3 (42) 49.0
 
Sept. 19, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 10.8 μg/m3 (46) 50.0
 
Sept. 19, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (49) N/A N/A 11.3 μg/m3 (48) 49.0
 
Sept. 19, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 52.0 ppb (49) N/A N/A 11.8 μg/m3 (50) 50.0
 
Sept. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 48.0 ppb (45) N/A N/A 13.1 μg/m3 (54) 54.0
 
Sept. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A N/A 13.4 μg/m3 (54) 54.0
 
Sept. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 13.5 μg/m3 (54) 54.0
 
Sept. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 13.8 μg/m3 (55) 55.0
 
Sept. 19, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 13.6 μg/m3 (55) 55.0
 
Sept. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 13.0 μg/m3 (53) 53.0
 
Sept. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (24) N/A N/A 13.2 μg/m3 (54) 54.0
 
Sept. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 22.0 ppb (21) N/A N/A 13.1 μg/m3 (54) 54.0
 
Sept. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (24) N/A N/A 13.1 μg/m3 (54) 54.0
 
Sept. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 12.5 μg/m3 (52) 52.0
 
Sept. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 13.5 μg/m3 (54) 54.0
 
Sept. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 14.8 μg/m3 (57) 57.0
 
Sept. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 15.6 μg/m3 (59) 59.0
 
Sept. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 20.6 μg/m3 (69) 69.0
 
Sept. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 14.8 μg/m3 (57) 57.0
 
Sept. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 11.3 μg/m3 (48) 48.0
 
Sept. 19, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 42.0 ppb (39) N/A N/A 9.0 μg/m3 (38) 39.0
 
Sept. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 56.0 ppb (55) N/A N/A 7.5 μg/m3 (32) 55.0
 
Sept. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 7.1 μg/m3 (30) 51.0
 
Sept. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 54.0 ppb (50) N/A N/A 7.8 μg/m3 (33) 50.0
 
Sept. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 57.0 ppb (58) N/A N/A 8.9 μg/m3 (38) 58.0
 
Sept. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 57.0 ppb (58) N/A N/A 7.6 μg/m3 (32) 58.0
 
Sept. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 50.0 ppb (47) N/A N/A 7.7 μg/m3 (33) 47.0
 
Sept. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 41.0 ppb (38) N/A N/A 7.3 μg/m3 (31) 38.0
 
Sept. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 6.3 μg/m3 (27) 36.0
 
Sept. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 5.3 μg/m3 (23) 31.0
 
Sept. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
Sept. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 4.9 μg/m3 (21) 23.0
 
Sept. 18, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 4.9 μg/m3 (21) 21.0
 
Sept. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 4.9 μg/m3 (21) 22.0
 
Sept. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 4.9 μg/m3 (21) 23.0
 
Sept. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 4.9 μg/m3 (21) 24.0
 
Sept. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 5.2 μg/m3 (22) 25.0
 
Sept. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 5.7 μg/m3 (24) 25.0
 
Sept. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 5.7 μg/m3 (24) 30.0
 
Sept. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 6.7 μg/m3 (28) 31.0
 
Sept. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 6.9 μg/m3 (29) 34.0
 
Sept. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 7.8 μg/m3 (33) 36.0
 
Sept. 18, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 7.8 μg/m3 (33) 38.0
 
Sept. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 7.5 μg/m3 (32) 39.0
 
Sept. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 7.2 μg/m3 (31) 45.0
 
Sept. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 7.5 μg/m3 (32) 48.0
 
Sept. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 7.7 μg/m3 (33) 48.0
 
Sept. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 8.7 μg/m3 (37) 44.0
 
Sept. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 9.5 μg/m3 (40) 45.0
 
Sept. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 9.5 μg/m3 (40) 40.0
 
Sept. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 10.4 μg/m3 (44) 44.0
 
Sept. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 10.2 μg/m3 (43) 43.0
 
Sept. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 9.9 μg/m3 (42) 42.0
 
Sept. 17, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 8.8 μg/m3 (37) 37.0
 
Sept. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 7.9 μg/m3 (33) 33.0
 
Sept. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 6.8 μg/m3 (29) 30.0
 
Sept. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 6.5 μg/m3 (28) 34.0
 
Sept. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 6.8 μg/m3 (29) 32.0
 
Sept. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 7.0 μg/m3 (30) 36.0
 
Sept. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 7.1 μg/m3 (30) 30.0
 
Sept. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 8.2 μg/m3 (35) 38.0
 
Sept. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 9.6 μg/m3 (40) 40.0
 
Sept. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A N/A 9.2 μg/m3 (39) 39.0
 
Sept. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A N/A 10.1 μg/m3 (43) 43.0
 
Sept. 17, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 50.0 ppb (47) N/A N/A 12.3 μg/m3 (52) 52.0
 
Sept. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 54.0 ppb (50) N/A N/A 9.9 μg/m3 (42) 50.0
 
Sept. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 9.8 μg/m3 (41) 48.0
 
Sept. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 53.0 ppb (50) N/A N/A 8.9 μg/m3 (38) 50.0
 
Sept. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 55.0 ppb (51) N/A N/A 8.9 μg/m3 (38) 51.0
 
Sept. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 8.9 μg/m3 (38) 48.0
 
Sept. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 8.3 μg/m3 (35) 48.0
 
Sept. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A N/A 46.0
 
Sept. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 8.9 μg/m3 (38) 39.0
 
Sept. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 8.5 μg/m3 (36) 36.0
 
Sept. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 11.5 μg/m3 (48) 48.0
 
Sept. 16, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 10.5 μg/m3 (44) 44.0
 
Sept. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 9.2 μg/m3 (39) 39.0
 
Sept. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 13.0 ppb (13) N/A N/A 9.7 μg/m3 (41) 41.0
 
Sept. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 9.9 μg/m3 (42) 42.0
 
Sept. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 10.5 μg/m3 (44) 44.0
 
Sept. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 12.4 μg/m3 (52) 52.0
 
Sept. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 12.1 μg/m3 (51) 51.0
 
Sept. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 12.4 μg/m3 (52) 52.0
 
Sept. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 12.2 μg/m3 (52) 52.0
 
Sept. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 13.1 μg/m3 (54) 54.0
 
Sept. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 10.7 μg/m3 (45) 45.0
 
Sept. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 12.2 μg/m3 (52) 52.0
 
Sept. 16, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 10.5 μg/m3 (44) 44.0
 
Sept. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 48.0 ppb (45) N/A N/A 8.4 μg/m3 (36) 45.0
 
Sept. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 48.0 ppb (45) N/A N/A 7.7 μg/m3 (33) 45.0
 
Sept. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 49.0 ppb (46) N/A N/A 7.4 μg/m3 (31) 46.0
 
Sept. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 7.2 μg/m3 (31) 43.0
 
Sept. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 8.3 μg/m3 (35) 41.0
 
Sept. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 5.1 μg/m3 (22) 39.0
 
Sept. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 4.8 μg/m3 (20) 38.0
 
Sept. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 6.5 μg/m3 (28) 37.0
 
Sept. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 9.8 μg/m3 (41) 41.0
 
Sept. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 11.1 μg/m3 (47) 47.0
 
Sept. 15, 2021, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 10.7 μg/m3 (45) 45.0
 
Sept. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A 9.2 μg/m3 (39) 39.0
 
Sept. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 8.4 μg/m3 (36) 36.0
 
Sept. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 7.7 μg/m3 (33) 33.0
 
Sept. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 7.8 μg/m3 (33) 33.0
 
Sept. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 7.1 μg/m3 (30) 30.0
 
Sept. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 6.7 μg/m3 (28) 28.0
 
Sept. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 15, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
Sept. 15, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 5.9 μg/m3 (25) 31.0
 
Sept. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 6.4 μg/m3 (27) 34.0
 
Sept. 15, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 6.9 μg/m3 (29) 35.0
 
Sept. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 5.5 μg/m3 (23) 38.0
 
Sept. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 4.8 μg/m3 (20) 38.0
 
Sept. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 5.3 μg/m3 (23) 39.0
 
Sept. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 5.2 μg/m3 (22) 39.0
 
Sept. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 3.9 μg/m3 (17) 38.0
 
Sept. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 3.9 μg/m3 (17) 36.0
 
Sept. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 3.9 μg/m3 (17) 35.0
 
Sept. 14, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 3.9 μg/m3 (17) 31.0