AQSQID: 460330132

Site Name: Wind Cave

Location: Hot Spgs (Prairie Vista Trl), SD

Reporting: True, Located: True

Current AQI: 24.0

Hot Spgs (Prairie Vista Trl) SD, US: 43.557613, -103.483658

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 24, 2020, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 24.0
 
Jan. 23, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 6.0 μg/m3 (5) -1.1 μg/m3 (0) 31.0
 
Jan. 23, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) -1.3 μg/m3 (0) 32.0
 
Jan. 23, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 32.0
 
Jan. 23, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) -0.4 μg/m3 (0) 32.0
 
Jan. 23, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 5.0 μg/m3 (5) -2.3 μg/m3 (0) 32.0
 
Jan. 23, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 4.0 μg/m3 (4) -3.3 μg/m3 (0) 32.0
 
Jan. 23, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 3.0 μg/m3 (3) -0.1 μg/m3 (0) 30.0
 
Jan. 23, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 31.0
 
Jan. 23, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 4.0 μg/m3 (4) -0.6 μg/m3 (0) 30.0
 
Jan. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 0.0 μg/m3 (0) 1.0 μg/m3 (4) 29.0
 
Jan. 23, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 1.0 μg/m3 (1) 2.2 μg/m3 (9) 28.0
 
Jan. 23, 2020, noon N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 2.0 μg/m3 (2) 2.2 μg/m3 (9) 28.0
 
Jan. 23, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 0.0 μg/m3 (0) 1.3 μg/m3 (5) 28.0
 
Jan. 23, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 0.0 μg/m3 (0) 1.2 μg/m3 (5) 28.0
 
Jan. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 2.0 μg/m3 (2) 1.5 μg/m3 (6) 28.0
 
Jan. 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 6.0 μg/m3 (5) 0.3 μg/m3 (1) 27.0
 
Jan. 23, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 27.0
 
Jan. 23, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 2.0 μg/m3 (2) 1.3 μg/m3 (5) 28.0
 
Jan. 23, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 3.0 μg/m3 (3) -0.1 μg/m3 (0) 28.0
 
Jan. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 27.0
 
Jan. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 4.0 μg/m3 (4) 0.3 μg/m3 (1) 27.0
 
Jan. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 0.8 μg/m3 (3) 25.0
 
Jan. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 25.0
 
Jan. 23, 2020, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 25.0
 
Jan. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) 0.5 μg/m3 (2) 28.0
 
Jan. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 5.0 μg/m3 (5) -0.1 μg/m3 (0) 29.0
 
Jan. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 5.0 μg/m3 (5) 1.5 μg/m3 (6) 28.0
 
Jan. 22, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 0.2 μg/m3 (1) 4.0
 
Jan. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) -0.9 μg/m3 (0) 7.0
 
Jan. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 2.5 μg/m3 (10) 32.0
 
Jan. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) 4.6 μg/m3 (19) 35.0
 
Jan. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 4.0 μg/m3 (4) 3.6 μg/m3 (15) 35.0
 
Jan. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 5.0 μg/m3 (5) 2.5 μg/m3 (10) 35.0
 
Jan. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 3.0 μg/m3 (3) 1.8 μg/m3 (8) 35.0
 
Jan. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 2.9 μg/m3 (12) 33.0
 
Jan. 22, 2020, noon N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 2.7 μg/m3 (11) 33.0
 
Jan. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 11.0 μg/m3 (10) -0.4 μg/m3 (0) 34.0
 
Jan. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 11.0 μg/m3 (10) -1.6 μg/m3 (0) 35.0
 
Jan. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) -1.3 μg/m3 (0) 32.0
 
Jan. 22, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 11.0 μg/m3 (10) -1.3 μg/m3 (0) 33.0
 
Jan. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 5.0 μg/m3 (5) -0.6 μg/m3 (0) 35.0
 
Jan. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) 1.3 μg/m3 (5) 34.0
 
Jan. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) 3.6 μg/m3 (15) 33.0
 
Jan. 22, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 4.6 μg/m3 (19) 33.0
 
Jan. 22, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 2.7 μg/m3 (11) 33.0
 
Jan. 22, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 10.0 μg/m3 (9) 0.0 μg/m3 (0) 33.0
 
Jan. 22, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 16.0 μg/m3 (15) -0.6 μg/m3 (0) 32.0
 
Jan. 22, 2020, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 16.0 μg/m3 (15) 0.8 μg/m3 (3) 32.0
 
Jan. 21, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 8.0 μg/m3 (7) 1.8 μg/m3 (8) 33.0
 
Jan. 21, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 11.0 μg/m3 (10) 1.0 μg/m3 (4) 34.0
 
Jan. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 11.0 μg/m3 (10) -0.1 μg/m3 (0) 34.0
 
Jan. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) -2.1 μg/m3 (0) 35.0
 
Jan. 21, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 6.0 μg/m3 (5) -1.1 μg/m3 (0) 35.0
 
Jan. 21, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) 0.8 μg/m3 (3) 34.0
 
Jan. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) 0.5 μg/m3 (2) 34.0
 
Jan. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 9.0 μg/m3 (8) -0.6 μg/m3 (0) 34.0
 
Jan. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 10.0 μg/m3 (9) 1.7 μg/m3 (7) 35.0
 
Jan. 21, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 4.0 μg/m3 (4) 3.4 μg/m3 (14) 34.0
 
Jan. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 8.0 μg/m3 (7) 2.7 μg/m3 (11) 34.0
 
Jan. 21, 2020, noon N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 8.0 μg/m3 (7) 2.9 μg/m3 (12) 33.0
 
Jan. 21, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 10.0 μg/m3 (9) 5.1 μg/m3 (21) 32.0
 
Jan. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 15.0 μg/m3 (14) 4.8 μg/m3 (20) 29.0
 
Jan. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 18.0 μg/m3 (16) 2.5 μg/m3 (10) 28.0
 
Jan. 21, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 18.0 μg/m3 (16) 1.0 μg/m3 (4) 29.0
 
Jan. 21, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 14.0 μg/m3 (13) -0.6 μg/m3 (0) 31.0
 
Jan. 21, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 0.3 μg/m3 (1) 33.0
 
Jan. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 2.7 μg/m3 (11) 33.0
 
Jan. 21, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 2.5 μg/m3 (10) 10.0
 
Jan. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 10.0 μg/m3 (9) 2.5 μg/m3 (10) 34.0
 
Jan. 21, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 4.0 μg/m3 (4) 1.5 μg/m3 (6) 34.0
 
Jan. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 34.0
 
Jan. 21, 2020, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) 1.8 μg/m3 (8) 34.0
 
Jan. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A -1.0 μg/m3 (0) 3.4 μg/m3 (14) 35.0
 
Jan. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 1.0 μg/m3 (1) 3.9 μg/m3 (16) 37.0
 
Jan. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 5.0 μg/m3 (5) 1.8 μg/m3 (8) 37.0
 
Jan. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 5.0 μg/m3 (5) -1.1 μg/m3 (0) 35.0
 
Jan. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 8.0 μg/m3 (7) -1.9 μg/m3 (0) 28.0
 
Jan. 20, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 12.0 μg/m3 (11) -1.4 μg/m3 (0) 27.0
 
Jan. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 13.0 μg/m3 (12) -0.6 μg/m3 (0) 26.0
 
Jan. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) -2.1 μg/m3 (0) 25.0
 
Jan. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 5.0 μg/m3 (5) -1.6 μg/m3 (0) 28.0
 
Jan. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 6.0 μg/m3 (5) -0.3 μg/m3 (0) 33.0
 
Jan. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 33.0
 
Jan. 20, 2020, noon N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 1.0 μg/m3 (1) 4.4 μg/m3 (18) 32.0
 
Jan. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 3.0 μg/m3 (3) 5.1 μg/m3 (21) 29.0
 
Jan. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 5.0 μg/m3 (5) -0.4 μg/m3 (0) 27.0
 
Jan. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) 0.5 μg/m3 (2) 30.0
 
Jan. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) -0.1 μg/m3 (0) 32.0
 
Jan. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 4.0 μg/m3 (4) -0.4 μg/m3 (0) 32.0
 
Jan. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 1.0 μg/m3 (1) 2.2 μg/m3 (9) 32.0
 
Jan. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) 3.2 μg/m3 (13) 33.0
 
Jan. 20, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) 2.9 μg/m3 (12) 32.0
 
Jan. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) 1.5 μg/m3 (6) 32.0
 
Jan. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 2.0 μg/m3 (2) -0.4 μg/m3 (0) 32.0
 
Jan. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 32.0
 
Jan. 20, 2020, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) -1.4 μg/m3 (0) 33.0
 
Jan. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 1.0 μg/m3 (1) -0.6 μg/m3 (0) 34.0
 
Jan. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 0.0 μg/m3 (0) 0.8 μg/m3 (3) 33.0
 
Jan. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) 1.3 μg/m3 (5) 34.0
 
Jan. 19, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (8) 34.0
 
Jan. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) 0.8 μg/m3 (3) 34.0
 
Jan. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 4.0 μg/m3 (4) -1.6 μg/m3 (0) 34.0
 
Jan. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 5.0 μg/m3 (5) -0.8 μg/m3 (0) 32.0
 
Jan. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 1.0 μg/m3 (1) -1.1 μg/m3 (0) 32.0
 
Jan. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 4.0 μg/m3 (4) -1.1 μg/m3 (0) 32.0
 
Jan. 19, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 32.0
 
Jan. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 2.0 μg/m3 (2) 2.3 μg/m3 (10) 32.0
 
Jan. 19, 2020, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 1.0 μg/m3 (1) 0.1 μg/m3 (0) 32.0
 
Jan. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) -0.1 μg/m3 (0) 32.0
 
Jan. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) 1.5 μg/m3 (6) 32.0
 
Jan. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 32.0
 
Jan. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) -1.3 μg/m3 (0) 32.0
 
Jan. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) -0.1 μg/m3 (0) 1.0
 
Jan. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 1.0 μg/m3 (4) 4.0
 
Jan. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 1.0 μg/m3 (1) 1.3 μg/m3 (5) 32.0
 
Jan. 19, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 2.0 μg/m3 (2) 3.1 μg/m3 (13) 32.0
 
Jan. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 3.0 μg/m3 (3) 2.9 μg/m3 (12) 32.0
 
Jan. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 3.0 μg/m3 (3) 3.9 μg/m3 (16) 32.0
 
Jan. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A -2.0 μg/m3 (0) 7.3 μg/m3 (30) 32.0
 
Jan. 19, 2020, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A -2.0 μg/m3 (0) 5.1 μg/m3 (21) 33.0
 
Jan. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A -1.0 μg/m3 (0) 4.8 μg/m3 (20) 34.0
 
Jan. 18, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A N/A 33.0
 
Jan. 18, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) 3.2 μg/m3 (13) 34.0
 
Jan. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 32.0
 
Jan. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 7.0 μg/m3 (6) -1.4 μg/m3 (0) 32.0
 
Jan. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 7.0 μg/m3 (6) -0.4 μg/m3 (0) 32.0
 
Jan. 18, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 5.0 μg/m3 (5) 0.5 μg/m3 (2) 28.0
 
Jan. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 3.0 μg/m3 (3) 1.3 μg/m3 (5) 28.0
 
Jan. 18, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 4.0 μg/m3 (4) 0.3 μg/m3 (1) 30.0
 
Jan. 18, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 2.0 μg/m3 (2) 1.5 μg/m3 (6) 31.0
 
Jan. 18, 2020, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 0.0 μg/m3 (0) 3.6 μg/m3 (15) 28.0
 
Jan. 18, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 3.0 μg/m3 (3) 1.3 μg/m3 (5) 31.0
 
Jan. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 3.0 μg/m3 (3) 2.2 μg/m3 (9) 32.0
 
Jan. 18, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 1.0 μg/m3 (1) 3.6 μg/m3 (15) 32.0
 
Jan. 18, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 0.0 μg/m3 (0) 2.2 μg/m3 (9) 32.0
 
Jan. 18, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 0.0 μg/m3 (0) 2.2 μg/m3 (9) 32.0
 
Jan. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 1.0 μg/m3 (1) 2.0 μg/m3 (8) 33.0
 
Jan. 18, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 5.0 μg/m3 (5) 4.1 μg/m3 (17) 33.0
 
Jan. 18, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 30.0
 
Jan. 18, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 12.0 μg/m3 (11) 2.7 μg/m3 (11) 29.0
 
Jan. 18, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 14.0 μg/m3 (13) 5.1 μg/m3 (21) 26.0
 
Jan. 18, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 26.0 μg/m3 (24) 6.8 μg/m3 (28) 28.0
 
Jan. 18, 2020, midnight N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 37.0 μg/m3 (34) 4.8 μg/m3 (20) 34.0
 
Jan. 17, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 25.0 μg/m3 (23) 1.7 μg/m3 (7) 23.0
 
Jan. 17, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 20.0 μg/m3 (18) -0.4 μg/m3 (0) 29.0
 
Jan. 17, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 13.0 μg/m3 (12) -0.6 μg/m3 (0) 31.0
 
Jan. 17, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 0.0 μg/m3 (0) 10.0
 
Jan. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 11.0 μg/m3 (10) -0.4 μg/m3 (0) 32.0
 
Jan. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 12.0 μg/m3 (11) 1.0 μg/m3 (4) 32.0
 
Jan. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 17.0 μg/m3 (15) 2.7 μg/m3 (11) 32.0
 
Jan. 17, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 12.0 μg/m3 (11) 2.7 μg/m3 (11) 32.0
 
Jan. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 36.0 μg/m3 (33) 4.6 μg/m3 (19) 33.0
 
Jan. 17, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 55.0 μg/m3 (50) 8.0 μg/m3 (33) 50.0
 
Jan. 17, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 59.0 μg/m3 (52) 7.3 μg/m3 (30) 52.0
 
Jan. 17, 2020, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 78.0 μg/m3 (62) 9.0 μg/m3 (38) 62.0
 
Jan. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 85.0 μg/m3 (65) 11.5 μg/m3 (48) 65.0
 
Jan. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 105.0 μg/m3 (75) 11.8 μg/m3 (49) 75.0
 
Jan. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 89.0 μg/m3 (67) 13.0 μg/m3 (52) 67.0
 
Jan. 17, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 115.0 μg/m3 (80) 12.7 μg/m3 (51) 80.0
 
Jan. 17, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 146.0 μg/m3 (96) 16.1 μg/m3 (59) 96.0
 
Jan. 17, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 192.0 μg/m3 (118) 20.1 μg/m3 (67) 118.0
 
Jan. 17, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 221.0 μg/m3 (133) 20.6 μg/m3 (68) 133.0
 
Jan. 17, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 223.0 μg/m3 (134) 17.9 μg/m3 (63) 134.0
 
Jan. 17, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 250.0 μg/m3 (148) 23.1 μg/m3 (74) 148.0
 
Jan. 17, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 18.4 μg/m3 (64) 64.0
 
Jan. 17, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 166.0 μg/m3 (106) 12.3 μg/m3 (51) 106.0
 
Jan. 17, 2020, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 115.0 μg/m3 (80) 7.5 μg/m3 (31) 80.0