ID: 2070

AQSQID: 295100093

Site Name: Branch Street

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

Updated: Sept. 22, 2021, 9:03 a.m.

Location: Saint Louis (Near N Rivfront), MO

Reporting: True, Located: True

Current AQI: 14.0

Saint Louis (Near N Rivfront) MO, US: 38.65643, -90.18977

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 0.5 μg/m3 (3) 14.0
 
Sept. 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 1.8 μg/m3 (8) 16.0
 
Sept. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 1.7 μg/m3 (8) 15.0
 
Sept. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 7.1 μg/m3 (30) 30.0
 
Sept. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 1.2 μg/m3 (5) 14.0
 
Sept. 22, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 8.2 μg/m3 (35) 35.0
 
Sept. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 9.8 μg/m3 (41) 41.0
 
Sept. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) N/A 14.0
 
Sept. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 10.6 μg/m3 (45) 45.0
 
Sept. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) 2.0 μg/m3 (9) 23.0
 
Sept. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (27) 7.3 μg/m3 (31) 31.0
 
Sept. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (24) 2.8 μg/m3 (12) 24.0
 
Sept. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) N/A 21.0
 
Sept. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) N/A 25.0
 
Sept. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (22) 0.6 μg/m3 (3) 22.0
 
Sept. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (29) N/A 29.0
 
Sept. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) N/A 23.0
 
Sept. 21, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 17.1 μg/m3 (62) 62.0
 
Sept. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) N/A 10.0
 
Sept. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 0.7 μg/m3 (3) 11.0
 
Sept. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 11.1 μg/m3 (47) 47.0
 
Sept. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) -0.9 μg/m3 (0) 25.0
 
Sept. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (26) 4.8 μg/m3 (20) 26.0
 
Sept. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 1.2 μg/m3 (5) 14.0
 
Sept. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (22) 9.2 μg/m3 (39) 39.0
 
Sept. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (17) 6.4 μg/m3 (27) 27.0
 
Sept. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (29) 5.0 μg/m3 (21) 29.0
 
Sept. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (26) 8.1 μg/m3 (34) 34.0
 
Sept. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 8.4 μg/m3 (36) 36.0
 
Sept. 21, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 4.4 μg/m3 (19) 19.0
 
Sept. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 13.1 μg/m3 (54) 54.0
 
Sept. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 49.0 μg/m3 (46) 5.7 μg/m3 (24) 46.0
 
Sept. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 38.0 μg/m3 (36) 2.8 μg/m3 (12) 36.0
 
Sept. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 40.0 μg/m3 (38) 11.2 μg/m3 (47) 47.0
 
Sept. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 46.0 μg/m3 (43) 9.3 μg/m3 (39) 43.0
 
Sept. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 57.0 μg/m3 (52) 10.5 μg/m3 (44) 52.0
 
Sept. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 47.0 μg/m3 (44) -0.4 μg/m3 (0) 44.0
 
Sept. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 43.0 μg/m3 (40) 10.6 μg/m3 (45) 45.0
 
Sept. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) 9.1 μg/m3 (38) 38.0
 
Sept. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) 4.4 μg/m3 (19) 30.0
 
Sept. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) -2.9 μg/m3 (0) 30.0
 
Sept. 20, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 25.9 μg/m3 (81) 81.0
 
Sept. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (17) -1.1 μg/m3 (0) 17.0
 
Sept. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
Sept. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) N/A 13.0
 
Sept. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 19.0 μg/m3 (66) 66.0
 
Sept. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) -1.4 μg/m3 (0) 13.0
 
Sept. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 10.7 μg/m3 (45) 45.0
 
Sept. 20, 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) 4.4 μg/m3 (19) 19.0
 
Sept. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 8.1 μg/m3 (34) 34.0
 
Sept. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 0.4 μg/m3 (2) 11.0
 
Sept. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) N/A 12.0
 
Sept. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 2.4 μg/m3 (10) 11.0
 
Sept. 20, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 2.0 μg/m3 (9) 10.0
 
Sept. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 3.0 μg/m3 (13) 13.0
 
Sept. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) 5.7 μg/m3 (24) 25.0
 
Sept. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 6.9 μg/m3 (29) 29.0
 
Sept. 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 1.8 μg/m3 (8) 20.0
 
Sept. 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 5.5 μg/m3 (23) 23.0
 
Sept. 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (26) 3.0 μg/m3 (13) 26.0
 
Sept. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 2.3 μg/m3 (10) 13.0
 
Sept. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 4.3 μg/m3 (18) 18.0
 
Sept. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 14.9 μg/m3 (57) 57.0
 
Sept. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (17) 9.4 μg/m3 (40) 40.0
 
Sept. 19, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (22) 0.4 μg/m3 (2) 22.0
 
Sept. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (22) 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 6.4 μg/m3 (27) 27.0
 
Sept. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 7.0 μg/m3 (30) 30.0
 
Sept. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) N/A 16.0
 
Sept. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 7.4 μg/m3 (31) 31.0
 
Sept. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 12.1 μg/m3 (51) 51.0
 
Sept. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (24) 6.9 μg/m3 (29) 29.0
 
Sept. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) 13.8 μg/m3 (55) 55.0
 
Sept. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) 12.8 μg/m3 (53) 53.0
 
Sept. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 10.3 μg/m3 (43) 43.0
 
Sept. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) 7.7 μg/m3 (33) 33.0
 
Sept. 19, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 9.7 μg/m3 (41) 41.0
 
Sept. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 14.2 μg/m3 (56) 56.0
 
Sept. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 15.6 μg/m3 (59) 59.0
 
Sept. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 12.1 μg/m3 (51) 51.0
 
Sept. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 9.8 μg/m3 (41) 41.0
 
Sept. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 8.7 μg/m3 (37) 37.0
 
Sept. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 10.8 μg/m3 (46) 46.0
 
Sept. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 2.0 μg/m3 (9) 14.0
 
Sept. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 2.8 μg/m3 (12) 16.0
 
Sept. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 12.6 μg/m3 (53) 53.0
 
Sept. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 9.4 μg/m3 (40) 40.0
 
Sept. 18, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 36.0 μg/m3 (34) 9.1 μg/m3 (38) 38.0
 
Sept. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) 11.9 μg/m3 (50) 50.0
 
Sept. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 27.7 μg/m3 (84) 84.0
 
Sept. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (22) 10.1 μg/m3 (43) 43.0
 
Sept. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 6.7 μg/m3 (28) 28.0
 
Sept. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 24.6 μg/m3 (78) 78.0
 
Sept. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (22) 6.6 μg/m3 (28) 28.0
 
Sept. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 4.2 μg/m3 (18) 19.0
 
Sept. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 8.5 μg/m3 (36) 36.0
 
Sept. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 4.0 μg/m3 (17) 20.0
 
Sept. 18, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (32) 7.8 μg/m3 (33) 33.0
 
Sept. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 30.0 μg/m3 (28) N/A 28.0
 
Sept. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
Sept. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 9.6 μg/m3 (40) 40.0
 
Sept. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (22) 7.4 μg/m3 (31) 31.0
 
Sept. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) 13.8 μg/m3 (55) 55.0
 
Sept. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) 9.3 μg/m3 (39) 39.0
 
Sept. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) 11.2 μg/m3 (47) 47.0
 
Sept. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 40.0 μg/m3 (38) 5.5 μg/m3 (23) 38.0
 
Sept. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 53.0 μg/m3 (50) 10.1 μg/m3 (43) 50.0
 
Sept. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 97.0 μg/m3 (72) 37.8 μg/m3 (107) 107.0
 
Sept. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 63.0 μg/m3 (55) 22.5 μg/m3 (73) 73.0
 
Sept. 17, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 65.0 μg/m3 (56) 23.3 μg/m3 (75) 75.0
 
Sept. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 77.0 μg/m3 (62) -1.7 μg/m3 (0) 62.0
 
Sept. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) 5.9 μg/m3 (25) 25.0
 
Sept. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 20.0 μg/m3 (68) 68.0
 
Sept. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 2.6 μg/m3 (11) 18.0
 
Sept. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 11.3 μg/m3 (48) 48.0
 
Sept. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 9.3 μg/m3 (39) 39.0
 
Sept. 17, 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) 12.2 μg/m3 (52) 52.0
 
Sept. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (32) 11.5 μg/m3 (48) 48.0
 
Sept. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (27) 8.1 μg/m3 (34) 34.0
 
Sept. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 36.0 μg/m3 (34) 14.8 μg/m3 (57) 57.0
 
Sept. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (27) 7.2 μg/m3 (31) 31.0
 
Sept. 17, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 41.0 μg/m3 (38) 3.5 μg/m3 (15) 38.0
 
Sept. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (17) 14.3 μg/m3 (56) 56.0
 
Sept. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 16.7 μg/m3 (61) 61.0
 
Sept. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) 8.6 μg/m3 (36) 36.0
 
Sept. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) 8.4 μg/m3 (36) 36.0
 
Sept. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 56.0 μg/m3 (52) 2.8 μg/m3 (12) 52.0
 
Sept. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 44.0 μg/m3 (41) 9.7 μg/m3 (41) 41.0
 
Sept. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 43.0 μg/m3 (40) 9.2 μg/m3 (39) 40.0
 
Sept. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 61.0 μg/m3 (54) 7.2 μg/m3 (31) 54.0
 
Sept. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 71.0 μg/m3 (59) 9.3 μg/m3 (39) 59.0
 
Sept. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 61.0 μg/m3 (54) 9.0 μg/m3 (38) 54.0
 
Sept. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 47.0 μg/m3 (44) 16.4 μg/m3 (61) 61.0
 
Sept. 16, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) 7.5 μg/m3 (32) 32.0
 
Sept. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 4.0 μg/m3 (17) 25.0
 
Sept. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 8.7 μg/m3 (37) 37.0
 
Sept. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 10.2 μg/m3 (43) 43.0
 
Sept. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 2.4 μg/m3 (10) 14.0
 
Sept. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 3.1 μg/m3 (13) 16.0
 
Sept. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 13.2 μg/m3 (54) 54.0
 
Sept. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) 7.7 μg/m3 (33) 33.0
 
Sept. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 0.0 μg/m3 (0) 19.0
 
Sept. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (29) 9.8 μg/m3 (41) 41.0
 
Sept. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) 5.6 μg/m3 (24) 24.0
 
Sept. 16, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 3.0 μg/m3 (13) 18.0
 
Sept. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 1.5 μg/m3 (7) 18.0
 
Sept. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) 4.8 μg/m3 (20) 20.0
 
Sept. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 0.9 μg/m3 (4) 14.0
 
Sept. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (19) 12.4 μg/m3 (52) 52.0
 
Sept. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (24) 8.3 μg/m3 (35) 35.0
 
Sept. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (24) -0.2 μg/m3 (0) 24.0
 
Sept. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 3.5 μg/m3 (15) 21.0
 
Sept. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 4.4 μg/m3 (19) 21.0
 
Sept. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (22) 1.1 μg/m3 (5) 22.0
 
Sept. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 1.6 μg/m3 (7) 20.0
 
Sept. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.0 μg/m3 (33) 5.4 μg/m3 (23) 33.0
 
Sept. 15, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (26) 9.7 μg/m3 (41) 41.0
 
Sept. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 16.9 μg/m3 (62) 62.0
 
Sept. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 7.9 μg/m3 (33) 33.0
 
Sept. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) N/A 16.0
 
Sept. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (17) 19.8 μg/m3 (68) 68.0
 
Sept. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) 3.1 μg/m3 (13) 30.0
 
Sept. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (24) 0.3 μg/m3 (2) 24.0