ID: 9698

AQSQID: 840460990009

Site Name: Sf-Usd

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

Updated: April 16, 2021, 2:45 p.m.

Location: Sioux Falls (W Nobel St), SD

Reporting: True, Located: True

Current AQI: 16.0

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
April 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 4.0 μg/m3 (4) 1.7 μg/m3 (8) 16.0
 
April 16, 2021, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 4.3 μg/m3 (4) N/A 13.0
 
April 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 3.3 μg/m3 (4) N/A 20.0
 
April 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 4.6 μg/m3 (5) 0.0 μg/m3 (0) 21.0
 
April 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 3.9 μg/m3 (4) 6.6 μg/m3 (28) 28.0
 
April 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 3.9 μg/m3 (4) 6.5 μg/m3 (28) 28.0
 
April 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 4.0 μg/m3 (4) 7.6 μg/m3 (32) 32.0
 
April 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 4.2 μg/m3 (4) -1.0 μg/m3 (0) 23.0
 
April 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 3.3 μg/m3 (4) 8.6 μg/m3 (36) 36.0
 
April 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 4.7 μg/m3 (5) 9.2 μg/m3 (39) 39.0
 
April 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 4.5 μg/m3 (5) 6.9 μg/m3 (29) 29.0
 
April 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 2.8 μg/m3 (3) 9.5 μg/m3 (40) 40.0
 
April 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 3.5 μg/m3 (4) 8.5 μg/m3 (36) 36.0
 
April 16, 2021, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 5.1 μg/m3 (5) 7.8 μg/m3 (33) 33.0
 
April 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 4.2 μg/m3 (4) 9.4 μg/m3 (40) 40.0
 
April 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 5.0 μg/m3 (5) 8.4 μg/m3 (36) 36.0
 
April 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 6.0 μg/m3 (6) 10.5 μg/m3 (44) 44.0
 
April 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 5.0 μg/m3 (5) 12.1 μg/m3 (51) 51.0
 
April 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 2.8 μg/m3 (3) 7.7 μg/m3 (33) 33.0
 
April 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 4.4 μg/m3 (5) 10.7 μg/m3 (45) 45.0
 
April 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 2.7 μg/m3 (3) 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 3.1 μg/m3 (3) 8.3 μg/m3 (35) 35.0
 
April 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 5.9 μg/m3 (6) 10.7 μg/m3 (45) 45.0
 
April 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 4.9 μg/m3 (5) 8.1 μg/m3 (34) 34.0
 
April 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 3.3 μg/m3 (4) 8.3 μg/m3 (35) 35.0
 
April 15, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 5.4 μg/m3 (5) 5.4 μg/m3 (23) 23.0
 
April 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 5.1 μg/m3 (5) 5.2 μg/m3 (22) 22.0
 
April 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 2.7 μg/m3 (3) 7.6 μg/m3 (32) 32.0
 
April 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 4.3 μg/m3 (4) 12.5 μg/m3 (52) 52.0
 
April 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 3.8 μg/m3 (4) 10.0 μg/m3 (42) 42.0
 
April 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 4.6 μg/m3 (5) 5.3 μg/m3 (23) 24.0
 
April 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 4.0 μg/m3 (4) 8.1 μg/m3 (34) 34.0
 
April 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 3.8 μg/m3 (4) 10.2 μg/m3 (43) 43.0
 
April 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 3.4 μg/m3 (4) 6.7 μg/m3 (28) 28.0
 
April 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 6.6 μg/m3 (7) 9.0 μg/m3 (38) 38.0
 
April 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 2.1 μg/m3 (2) 8.8 μg/m3 (37) 37.0
 
April 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 2.6 μg/m3 (3) 11.1 μg/m3 (47) 47.0
 
April 15, 2021, midnight N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 3.8 μg/m3 (4) 3.8 μg/m3 (16) 24.0
 
April 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 6.6 μg/m3 (7) 7.2 μg/m3 (31) 31.0
 
April 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 3.4 μg/m3 (4) 11.0 μg/m3 (46) 46.0
 
April 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 7.3 μg/m3 (7) 10.8 μg/m3 (46) 46.0
 
April 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 4.1 μg/m3 (4) 10.4 μg/m3 (44) 44.0
 
April 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 2.3 μg/m3 (3) 10.9 μg/m3 (46) 46.0
 
April 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 4.2 μg/m3 (4) 11.9 μg/m3 (50) 50.0
 
April 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 5.4 μg/m3 (5) 8.9 μg/m3 (38) 38.0
 
April 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 6.1 μg/m3 (6) 10.6 μg/m3 (45) 45.0
 
April 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 2.3 μg/m3 (3) 10.4 μg/m3 (44) 44.0
 
April 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 6.4 μg/m3 (6) 8.6 μg/m3 (36) 36.0
 
April 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 2.8 μg/m3 (3) 9.3 μg/m3 (39) 39.0
 
April 14, 2021, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 3.7 μg/m3 (4) 9.9 μg/m3 (42) 42.0
 
April 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 2.5 μg/m3 (3) 8.1 μg/m3 (34) 34.0
 
April 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 2.7 μg/m3 (3) 9.5 μg/m3 (40) 40.0
 
April 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 4.1 μg/m3 (4) 8.8 μg/m3 (37) 37.0
 
April 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 1.0 μg/m3 (1) 8.8 μg/m3 (37) 37.0
 
April 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 5.9 μg/m3 (6) 9.4 μg/m3 (40) 40.0
 
April 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 5.6 μg/m3 (6) 9.0 μg/m3 (38) 38.0
 
April 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 2.8 μg/m3 (3) 10.5 μg/m3 (44) 44.0
 
April 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 2.8 μg/m3 (3) 9.7 μg/m3 (41) 41.0
 
April 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 3.0 μg/m3 (3) 10.2 μg/m3 (43) 43.0
 
April 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 2.2 μg/m3 (3) 8.1 μg/m3 (34) 34.0
 
April 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 3.6 μg/m3 (4) 8.6 μg/m3 (36) 36.0
 
April 14, 2021, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 2.0 μg/m3 (2) 9.6 μg/m3 (40) 40.0
 
April 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 1.8 μg/m3 (2) 10.1 μg/m3 (43) 43.0
 
April 13, 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) 8.7 μg/m3 (37) 37.0
 
April 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 4.9 μg/m3 (5) 8.6 μg/m3 (36) 36.0
 
April 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 0.7 μg/m3 (1) 8.1 μg/m3 (34) 36.0
 
April 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 4.1 μg/m3 (4) 9.0 μg/m3 (38) 38.0
 
April 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 3.4 μg/m3 (4) 10.9 μg/m3 (46) 46.0
 
April 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 2.2 μg/m3 (3) 9.8 μg/m3 (41) 41.0
 
April 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 2.8 μg/m3 (3) 10.4 μg/m3 (44) 44.0
 
April 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 1.0 μg/m3 (1) 7.9 μg/m3 (33) 34.0
 
April 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 3.9 μg/m3 (4) 8.1 μg/m3 (34) 34.0
 
April 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 4.1 μg/m3 (4) 8.7 μg/m3 (37) 37.0
 
April 13, 2021, noon N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 4.7 μg/m3 (5) 11.3 μg/m3 (48) 48.0
 
April 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 1.8 μg/m3 (2) 10.2 μg/m3 (43) 43.0
 
April 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 4.9 μg/m3 (5) 8.8 μg/m3 (37) 37.0
 
April 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 2.8 μg/m3 (3) 7.5 μg/m3 (32) 34.0
 
April 13, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 3.8 μg/m3 (4) 8.1 μg/m3 (34) 35.0
 
April 13, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 4.8 μg/m3 (5) 8.2 μg/m3 (35) 35.0
 
April 13, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 3.2 μg/m3 (3) 8.5 μg/m3 (36) 36.0
 
April 13, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 2.9 μg/m3 (3) 9.8 μg/m3 (41) 41.0
 
April 13, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 1.8 μg/m3 (2) 9.6 μg/m3 (40) 40.0
 
April 13, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A -0.1 μg/m3 (0) 9.8 μg/m3 (41) 41.0
 
April 13, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 1.6 μg/m3 (2) 8.9 μg/m3 (38) 38.0
 
April 13, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 5.2 μg/m3 (5) 10.3 μg/m3 (43) 43.0
 
April 13, 2021, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 6.0 μg/m3 (6) 9.4 μg/m3 (40) 40.0
 
April 12, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 2.7 μg/m3 (3) 10.3 μg/m3 (43) 43.0
 
April 12, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 6.4 μg/m3 (6) 10.9 μg/m3 (46) 46.0
 
April 12, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 3.9 μg/m3 (4) 6.9 μg/m3 (29) 29.0
 
April 12, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 4.2 μg/m3 (4) 9.4 μg/m3 (40) 40.0
 
April 12, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 2.5 μg/m3 (3) 9.3 μg/m3 (39) 39.0
 
April 12, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 2.6 μg/m3 (3) 10.4 μg/m3 (44) 44.0
 
April 12, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 4.0 μg/m3 (4) 7.8 μg/m3 (33) 33.0
 
April 12, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 3.1 μg/m3 (3) 9.7 μg/m3 (41) 41.0
 
April 12, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 5.4 μg/m3 (5) 8.5 μg/m3 (36) 36.0
 
April 12, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 3.0 μg/m3 (3) 7.6 μg/m3 (32) 32.0
 
April 12, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 3.8 μg/m3 (4) 9.1 μg/m3 (38) 38.0
 
April 12, 2021, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 1.9 μg/m3 (2) 8.4 μg/m3 (36) 36.0
 
April 12, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 5.9 μg/m3 (6) 9.7 μg/m3 (41) 41.0
 
April 12, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 4.4 μg/m3 (5) 7.4 μg/m3 (31) 31.0
 
April 12, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 5.0 μg/m3 (5) 9.1 μg/m3 (38) 38.0
 
April 12, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 2.0 μg/m3 (2) 6.6 μg/m3 (28) 28.0
 
April 12, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 1.8 μg/m3 (2) 10.1 μg/m3 (43) 43.0
 
April 12, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 1.9 μg/m3 (2) 8.5 μg/m3 (36) 36.0
 
April 12, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 3.5 μg/m3 (4) 10.6 μg/m3 (45) 45.0
 
April 12, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 2.2 μg/m3 (3) 10.5 μg/m3 (44) 44.0
 
April 12, 2021, 3 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) 6.4 μg/m3 (27) 33.0
 
April 12, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 3.8 μg/m3 (4) 8.4 μg/m3 (36) 38.0
 
April 12, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 4.0 μg/m3 (4) 8.7 μg/m3 (37) 38.0
 
April 12, 2021, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 0.5 μg/m3 (1) 9.7 μg/m3 (41) 41.0
 
April 11, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 2.2 μg/m3 (3) 7.8 μg/m3 (33) 42.0
 
April 11, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 2.2 μg/m3 (3) 6.4 μg/m3 (27) 47.0
 
April 11, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 0.2 μg/m3 (1) 7.7 μg/m3 (33) 48.0
 
April 11, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 3.0 μg/m3 (3) 6.2 μg/m3 (26) 49.0
 
April 11, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 1.1 μg/m3 (2) 6.3 μg/m3 (27) 47.0
 
April 11, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 0.6 μg/m3 (1) 8.0 μg/m3 (34) 45.0
 
April 11, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 1.3 μg/m3 (2) 6.4 μg/m3 (27) 42.0
 
April 11, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 1.0 μg/m3 (1) 8.3 μg/m3 (35) 40.0
 
April 11, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 3.4 μg/m3 (4) 7.0 μg/m3 (30) 37.0
 
April 11, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 4.7 μg/m3 (5) 7.9 μg/m3 (33) 33.0
 
April 11, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 5.7 μg/m3 (6) 8.8 μg/m3 (37) 37.0
 
April 11, 2021, noon N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 5.4 μg/m3 (5) -3.4 μg/m3 (0) 9.0
 
April 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 10.3 μg/m3 (10) 3.7 μg/m3 (16) 16.0
 
April 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 7.6 μg/m3 (8) -1.2 μg/m3 (0) 9.0
 
April 11, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 8.3 μg/m3 (8) -4.2 μg/m3 (0) 12.0
 
April 11, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 7.3 μg/m3 (7) N/A 10.0
 
April 11, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 5.5 μg/m3 (6) N/A 13.0
 
April 11, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 6.7 μg/m3 (7) 1.0 μg/m3 (5) 15.0
 
April 11, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 6.5 μg/m3 (7) 1.8 μg/m3 (8) 20.0
 
April 11, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 5.2 μg/m3 (5) 2.5 μg/m3 (11) 26.0
 
April 11, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 3.1 μg/m3 (3) 10.3 μg/m3 (43) 43.0
 
April 11, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 4.1 μg/m3 (4) 9.4 μg/m3 (40) 40.0
 
April 11, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 2.3 μg/m3 (3) 9.1 μg/m3 (38) 41.0
 
April 11, 2021, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 1.7 μg/m3 (2) 6.6 μg/m3 (28) 45.0
 
April 10, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 1.1 μg/m3 (2) 6.3 μg/m3 (27) 47.0
 
April 10, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 1.8 μg/m3 (2) 7.7 μg/m3 (33) 48.0
 
April 10, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 1.9 μg/m3 (2) 5.8 μg/m3 (25) 47.0
 
April 10, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 1.9 μg/m3 (2) 7.4 μg/m3 (31) 46.0
 
April 10, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 4.0 μg/m3 (4) 8.1 μg/m3 (34) 46.0
 
April 10, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 1.2 μg/m3 (2) 6.6 μg/m3 (28) 44.0
 
April 10, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 1.4 μg/m3 (2) 7.4 μg/m3 (31) 42.0
 
April 10, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 1.3 μg/m3 (2) 7.9 μg/m3 (33) 38.0
 
April 10, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 3.2 μg/m3 (3) 8.3 μg/m3 (35) 35.0
 
April 10, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 6.0 μg/m3 (6) 11.1 μg/m3 (47) 47.0
 
April 10, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 6.2 μg/m3 (6) 7.4 μg/m3 (31) 31.0
 
April 10, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 4.1 μg/m3 (4) 3.8 μg/m3 (16) 21.0
 
April 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 4.4 μg/m3 (5) 2.9 μg/m3 (13) 19.0
 
April 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 3.8 μg/m3 (4) 5.3 μg/m3 (23) 23.0
 
April 10, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 5.0 μg/m3 (5) -3.8 μg/m3 (0) 19.0
 
April 10, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 5.8 μg/m3 (6) -2.2 μg/m3 (0) 14.0
 
April 10, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 1.5 μg/m3 (2) N/A 13.0
 
April 10, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 7.1 μg/m3 (7) N/A 10.0
 
April 10, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 5.8 μg/m3 (6) N/A 10.0
 
April 10, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 6.7 μg/m3 (7) N/A 14.0
 
April 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 5.2 μg/m3 (5) N/A 13.0
 
April 10, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 8.1 μg/m3 (8) N/A 14.0
 
April 10, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 5.6 μg/m3 (6) 8.5 μg/m3 (36) 36.0
 
April 10, 2021, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 4.1 μg/m3 (4) 8.1 μg/m3 (34) 34.0
 
April 9, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 1.8 μg/m3 (2) 9.2 μg/m3 (39) 39.0
 
April 9, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 3.0 μg/m3 (3) 10.5 μg/m3 (44) 44.0
 
April 9, 2021, 9 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) 9.3 μg/m3 (39) 39.0
 
April 9, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 1.1 μg/m3 (2) 7.3 μg/m3 (31) 32.0
 
April 9, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 3.1 μg/m3 (3) 9.2 μg/m3 (39) 39.0
 
April 9, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 4.3 μg/m3 (4) 9.3 μg/m3 (39) 39.0
 
April 9, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 4.6 μg/m3 (5) 9.6 μg/m3 (40) 40.0
 
April 9, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 4.6 μg/m3 (5) 9.4 μg/m3 (40) 40.0
 
April 9, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 3.2 μg/m3 (3) 10.3 μg/m3 (43) 43.0
 
April 9, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (9) 19.0