ID: 9698

AQSQID: 840460990009

Site Name: Sf-Usd

Added: March 30, 2021, 5:40 a.m.

Updated: Sept. 19, 2021, 9:55 a.m.

Location: Sioux Falls (W Nobel St), SD

Reporting: True, Located: True

Current AQI: 46.0

Sioux Falls (W Nobel St) SD, US: 43.59901, -96.78331

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 12, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 15.0 μg/m3 (14) 1.9 μg/m3 (8) 25.0
 
Sept. 12, 2021, 7 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) 2.4 μg/m3 (10) 26.0
 
Sept. 12, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 14.0 μg/m3 (13) 3.1 μg/m3 (13) 25.0
 
Sept. 12, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 16.0 μg/m3 (15) 2.3 μg/m3 (10) 25.0
 
Sept. 12, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 20.0 μg/m3 (19) 1.6 μg/m3 (7) 25.0
 
Sept. 12, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 32.0 μg/m3 (30) 3.1 μg/m3 (13) 30.0
 
Sept. 12, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 33.0 μg/m3 (31) 1.1 μg/m3 (5) 31.0
 
Sept. 12, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 33.0 μg/m3 (31) 4.1 μg/m3 (18) 34.0
 
Sept. 12, 2021, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 43.0 μg/m3 (40) 9.1 μg/m3 (38) 40.0
 
Sept. 11, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 50.0 μg/m3 (47) 11.3 μg/m3 (48) 48.0
 
Sept. 11, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 51.0 μg/m3 (48) 26.7 μg/m3 (82) 82.0
 
Sept. 11, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 75.0 μg/m3 (61) 15.3 μg/m3 (58) 61.0
 
Sept. 11, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 57.0 μg/m3 (52) 14.7 μg/m3 (57) 57.0
 
Sept. 11, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 60.0 μg/m3 (54) 9.3 μg/m3 (39) 54.0
 
Sept. 11, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 60.0 μg/m3 (54) 14.8 μg/m3 (57) 57.0
 
Sept. 11, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 45.0 μg/m3 (42) 10.3 μg/m3 (43) 43.0
 
Sept. 11, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 52.0 μg/m3 (49) 12.5 μg/m3 (52) 52.0
 
Sept. 11, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 38.0 μg/m3 (36) 9.4 μg/m3 (40) 40.0
 
Sept. 11, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 42.0 μg/m3 (39) 7.4 μg/m3 (31) 39.0
 
Sept. 11, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 41.0 μg/m3 (38) 9.1 μg/m3 (38) 38.0
 
Sept. 11, 2021, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 33.0 μg/m3 (31) 10.8 μg/m3 (46) 46.0
 
Sept. 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 38.0 μg/m3 (36) 14.1 μg/m3 (56) 56.0
 
Sept. 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 35.0 μg/m3 (33) 8.4 μg/m3 (36) 36.0
 
Sept. 11, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 24.0 μg/m3 (23) 6.9 μg/m3 (29) 29.0
 
Sept. 11, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 25.0 μg/m3 (24) 5.7 μg/m3 (24) 24.0
 
Sept. 11, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 37.0 μg/m3 (35) 10.6 μg/m3 (45) 45.0
 
Sept. 11, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 32.0 μg/m3 (30) 8.4 μg/m3 (36) 36.0
 
Sept. 11, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 41.0 μg/m3 (38) 14.8 μg/m3 (57) 57.0
 
Sept. 11, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 41.0 μg/m3 (38) 12.8 μg/m3 (53) 53.0
 
Sept. 11, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 48.0 μg/m3 (45) 11.0 μg/m3 (46) 46.0
 
Sept. 11, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 43.0 μg/m3 (40) 10.1 μg/m3 (43) 43.0
 
Sept. 11, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 40.0 μg/m3 (38) 10.8 μg/m3 (46) 46.0
 
Sept. 11, 2021, midnight N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 47.0 μg/m3 (44) 9.1 μg/m3 (38) 44.0
 
Sept. 10, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 64.0 μg/m3 (56) 12.5 μg/m3 (52) 56.0
 
Sept. 10, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 46.0 μg/m3 (43) 7.1 μg/m3 (30) 43.0
 
Sept. 10, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 45.0 μg/m3 (42) 3.8 μg/m3 (16) 42.0
 
Sept. 10, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 42.0 μg/m3 (39) 24.5 μg/m3 (78) 78.0
 
Sept. 10, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 53.0 μg/m3 (50) 10.8 μg/m3 (46) 50.0
 
Sept. 10, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Sept. 10, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 48.0 μg/m3 (45) 7.2 μg/m3 (31) 45.0
 
Sept. 10, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 39.0 μg/m3 (37) 20.2 μg/m3 (69) 69.0
 
Sept. 10, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 38.0 μg/m3 (36) -2.9 μg/m3 (0) 36.0
 
Sept. 10, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 40.0 μg/m3 (38) 7.2 μg/m3 (31) 38.0
 
Sept. 10, 2021, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 37.0 μg/m3 (35) 18.2 μg/m3 (64) 64.0
 
Sept. 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 23.0 μg/m3 (22) 5.5 μg/m3 (23) 23.0
 
Sept. 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 21.0 μg/m3 (20) 4.1 μg/m3 (18) 21.0
 
Sept. 10, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 26.0 μg/m3 (25) 3.1 μg/m3 (13) 25.0
 
Sept. 10, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 49.0 μg/m3 (46) -1.1 μg/m3 (0) 46.0
 
Sept. 10, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 26.0 μg/m3 (25) 1.6 μg/m3 (7) 27.0
 
Sept. 10, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 28.0 μg/m3 (26) 13.6 μg/m3 (55) 55.0
 
Sept. 10, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 42.0 μg/m3 (39) 6.2 μg/m3 (26) 39.0
 
Sept. 10, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 49.0 μg/m3 (46) 8.2 μg/m3 (35) 46.0
 
Sept. 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 41.0 μg/m3 (38) 8.6 μg/m3 (36) 38.0
 
Sept. 10, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 53.0 μg/m3 (50) 6.5 μg/m3 (28) 50.0
 
Sept. 10, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 40.0 μg/m3 (38) 2.8 μg/m3 (12) 38.0
 
Sept. 10, 2021, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 24.0 μg/m3 (23) 3.3 μg/m3 (14) 28.0
 
Sept. 9, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 16.0 μg/m3 (15) 2.4 μg/m3 (10) 34.0
 
Sept. 9, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 15.0 μg/m3 (14) -4.4 μg/m3 (0) 38.0
 
Sept. 9, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 19.0 μg/m3 (18) 0.0 μg/m3 (0) 39.0
 
Sept. 9, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 10.0 μg/m3 (10) 13.8 μg/m3 (55) 55.0
 
Sept. 9, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 14.0 μg/m3 (13) 3.6 μg/m3 (16) 39.0
 
Sept. 9, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 19.0 μg/m3 (18) 8.6 μg/m3 (36) 38.0
 
Sept. 9, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 17.0 μg/m3 (16) 1.2 μg/m3 (5) 36.0
 
Sept. 9, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 27.0 μg/m3 (25) 18.7 μg/m3 (65) 65.0
 
Sept. 9, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 20.0 μg/m3 (19) 3.6 μg/m3 (16) 20.0
 
Sept. 9, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 47.0 μg/m3 (44) 5.7 μg/m3 (24) 44.0
 
Sept. 9, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 72.0 μg/m3 (60) 4.8 μg/m3 (20) 60.0
 
Sept. 9, 2021, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 21.0 μg/m3 (20) 0.2 μg/m3 (1) 20.0
 
Sept. 9, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 13.0 μg/m3 (13) -1.7 μg/m3 (0) 13.0
 
Sept. 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 4.0 μg/m3 (4) -3.4 μg/m3 (0) 4.0
 
Sept. 9, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 8.0 μg/m3 (8) -2.7 μg/m3 (0) 8.0
 
Sept. 9, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 12.0 μg/m3 (12) 1.7 μg/m3 (8) 12.0
 
Sept. 9, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 8.0 μg/m3 (8) 2.1 μg/m3 (9) 9.0
 
Sept. 9, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 18.0 μg/m3 (17) 0.7 μg/m3 (3) 17.0
 
Sept. 9, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 35.0 μg/m3 (33) 0.7 μg/m3 (3) 33.0
 
Sept. 9, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 26.0 μg/m3 (25) 3.8 μg/m3 (16) 25.0
 
Sept. 9, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 42.0 μg/m3 (39) 6.7 μg/m3 (28) 39.0
 
Sept. 9, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 35.0 μg/m3 (33) 5.0 μg/m3 (21) 33.0
 
Sept. 9, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 27.0 μg/m3 (25) 3.1 μg/m3 (13) 25.0
 
Sept. 9, 2021, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 23.0 μg/m3 (22) -3.1 μg/m3 (0) 32.0
 
Sept. 8, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 13.0 μg/m3 (13) 2.1 μg/m3 (9) 36.0
 
Sept. 8, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 21.0 μg/m3 (20) 5.7 μg/m3 (24) 36.0
 
Sept. 8, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 21.0 μg/m3 (20) N/A 36.0
 
Sept. 8, 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) -3.1 μg/m3 (0) 35.0
 
Sept. 8, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 17.0 μg/m3 (16) 3.1 μg/m3 (13) 35.0
 
Sept. 8, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 23.0 μg/m3 (22) 1.4 μg/m3 (6) 36.0
 
Sept. 8, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 25.0 μg/m3 (24) -1.7 μg/m3 (0) 36.0
 
Sept. 8, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 26.0 μg/m3 (25) 6.2 μg/m3 (26) 33.0
 
Sept. 8, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 20.0 μg/m3 (19) 12.6 μg/m3 (53) 53.0
 
Sept. 8, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 56.0 μg/m3 (52) 2.1 μg/m3 (9) 52.0
 
Sept. 8, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 1.7 μg/m3 (8) 19.0
 
Sept. 8, 2021, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 22.0 μg/m3 (21) 0.4 μg/m3 (2) 21.0
 
Sept. 8, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 20.0 μg/m3 (19) 0.7 μg/m3 (3) 19.0
 
Sept. 8, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 17.0 μg/m3 (16) 1.6 μg/m3 (7) 20.0
 
Sept. 8, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 14.0 μg/m3 (13) 0.7 μg/m3 (3) 21.0
 
Sept. 8, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 16.0 μg/m3 (15) 0.9 μg/m3 (4) 20.0
 
Sept. 8, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 15.0 μg/m3 (14) 1.4 μg/m3 (6) 22.0
 
Sept. 8, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 19.0 μg/m3 (18) 1.4 μg/m3 (6) 25.0
 
Sept. 8, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 18.0 μg/m3 (17) 0.5 μg/m3 (3) 26.0
 
Sept. 8, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 17.0 μg/m3 (16) -3.9 μg/m3 (0) 25.0
 
Sept. 8, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 22.0 μg/m3 (21) -3.4 μg/m3 (0) 26.0
 
Sept. 8, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 23.0 μg/m3 (22) 1.4 μg/m3 (6) 28.0
 
Sept. 8, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 15.0 μg/m3 (14) 1.1 μg/m3 (5) 33.0
 
Sept. 8, 2021, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 24.0 μg/m3 (23) 0.2 μg/m3 (1) 42.0
 
Sept. 7, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 29.0 μg/m3 (27) 1.4 μg/m3 (6) 45.0
 
Sept. 7, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 27.0 μg/m3 (25) 0.4 μg/m3 (2) 46.0
 
Sept. 7, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 33.0 μg/m3 (31) -0.9 μg/m3 (0) 45.0
 
Sept. 7, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 26.0 μg/m3 (25) 0.0 μg/m3 (0) 44.0
 
Sept. 7, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 24.0 μg/m3 (23) 0.2 μg/m3 (1) 45.0
 
Sept. 7, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 19.0 μg/m3 (18) -0.2 μg/m3 (0) 47.0
 
Sept. 7, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 28.0 μg/m3 (26) -0.2 μg/m3 (0) 44.0
 
Sept. 7, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 24.0 μg/m3 (23) 1.9 μg/m3 (8) 40.0
 
Sept. 7, 2021, 3 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) 4.0 μg/m3 (17) 37.0
 
Sept. 7, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 24.0 μg/m3 (23) 4.8 μg/m3 (20) 33.0
 
Sept. 7, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 23.0 μg/m3 (22) 5.3 μg/m3 (23) 28.0
 
Sept. 7, 2021, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 206.0 μg/m3 (127) 8.6 μg/m3 (36) 127.0
 
Sept. 7, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 202.0 μg/m3 (125) 12.3 μg/m3 (52) 125.0
 
Sept. 7, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 179.0 μg/m3 (113) 9.6 μg/m3 (40) 113.0
 
Sept. 7, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 176.0 μg/m3 (112) 8.2 μg/m3 (35) 112.0
 
Sept. 7, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 178.0 μg/m3 (113) 10.5 μg/m3 (44) 113.0
 
Sept. 7, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 181.0 μg/m3 (114) 23.3 μg/m3 (75) 114.0
 
Sept. 7, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 178.0 μg/m3 (113) 12.7 μg/m3 (53) 113.0
 
Sept. 7, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 182.0 μg/m3 (115) 24.3 μg/m3 (77) 115.0
 
Sept. 7, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 183.0 μg/m3 (115) N/A 115.0
 
Sept. 7, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 181.0 μg/m3 (114) 24.3 μg/m3 (77) 114.0
 
Sept. 7, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 174.0 μg/m3 (111) 2.1 μg/m3 (9) 111.0
 
Sept. 7, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 175.0 μg/m3 (111) 11.5 μg/m3 (48) 111.0
 
Sept. 7, 2021, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 176.0 μg/m3 (112) 8.4 μg/m3 (36) 112.0
 
Sept. 6, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 175.0 μg/m3 (111) 6.7 μg/m3 (28) 111.0
 
Sept. 6, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 174.0 μg/m3 (111) 5.7 μg/m3 (24) 111.0
 
Sept. 6, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 170.0 μg/m3 (109) 6.4 μg/m3 (27) 109.0
 
Sept. 6, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 173.0 μg/m3 (110) 8.6 μg/m3 (36) 110.0
 
Sept. 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 172.0 μg/m3 (110) 6.9 μg/m3 (29) 110.0
 
Sept. 6, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 176.0 μg/m3 (112) 6.9 μg/m3 (29) 112.0
 
Sept. 6, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 157.0 μg/m3 (102) 19.9 μg/m3 (68) 102.0
 
Sept. 6, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 154.0 μg/m3 (100) 2.1 μg/m3 (9) 100.0
 
Sept. 6, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 151.0 μg/m3 (99) 3.5 μg/m3 (15) 99.0
 
Sept. 6, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 147.0 μg/m3 (97) 1.4 μg/m3 (6) 97.0
 
Sept. 6, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 149.0 μg/m3 (98) 3.1 μg/m3 (13) 98.0
 
Sept. 6, 2021, noon N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 147.0 μg/m3 (97) 4.0 μg/m3 (17) 97.0
 
Sept. 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 146.0 μg/m3 (97) 6.0 μg/m3 (25) 97.0
 
Sept. 6, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 144.0 μg/m3 (96) 4.8 μg/m3 (20) 96.0
 
Sept. 6, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 131.0 μg/m3 (89) 0.7 μg/m3 (3) 89.0
 
Sept. 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 134.0 μg/m3 (91) 3.1 μg/m3 (13) 91.0
 
Sept. 6, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 133.0 μg/m3 (90) 6.0 μg/m3 (25) 90.0
 
Sept. 6, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 135.0 μg/m3 (91) 4.5 μg/m3 (19) 91.0
 
Sept. 6, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 136.0 μg/m3 (92) 3.3 μg/m3 (14) 92.0
 
Sept. 6, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 132.0 μg/m3 (90) 5.2 μg/m3 (22) 90.0
 
Sept. 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 132.0 μg/m3 (90) 4.5 μg/m3 (19) 90.0
 
Sept. 6, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 136.0 μg/m3 (92) 3.5 μg/m3 (15) 92.0
 
Sept. 6, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 117.0 μg/m3 (82) 3.5 μg/m3 (15) 82.0
 
Sept. 6, 2021, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 117.0 μg/m3 (82) 4.1 μg/m3 (18) 82.0
 
Sept. 5, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 115.0 μg/m3 (81) N/A 81.0
 
Sept. 5, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 115.0 μg/m3 (81) N/A 81.0
 
Sept. 5, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 117.0 μg/m3 (82) 3.1 μg/m3 (13) 82.0
 
Sept. 5, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 125.0 μg/m3 (86) 5.0 μg/m3 (21) 86.0
 
Sept. 5, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 118.0 μg/m3 (83) 6.4 μg/m3 (27) 83.0
 
Sept. 5, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 121.0 μg/m3 (84) 1.4 μg/m3 (6) 84.0
 
Sept. 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 119.0 μg/m3 (83) 0.5 μg/m3 (3) 83.0
 
Sept. 5, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 105.0 μg/m3 (76) 0.2 μg/m3 (1) 76.0
 
Sept. 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 106.0 μg/m3 (77) 0.5 μg/m3 (3) 77.0
 
Sept. 5, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 108.0 μg/m3 (78) 18.9 μg/m3 (66) 78.0
 
Sept. 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 101.0 μg/m3 (74) 2.6 μg/m3 (11) 74.0
 
Sept. 5, 2021, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 104.0 μg/m3 (76) 2.1 μg/m3 (9) 76.0
 
Sept. 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 96.0 μg/m3 (72) -0.5 μg/m3 (0) 72.0
 
Sept. 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 125.0 μg/m3 (86) 0.9 μg/m3 (4) 86.0
 
Sept. 5, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 97.0 μg/m3 (72) 1.6 μg/m3 (7) 72.0
 
Sept. 5, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 86.0 μg/m3 (67) 2.1 μg/m3 (9) 67.0