AQSQID: 460330132

Site Name: Wind Cave

Location: Hot Spgs (Prairie Vista Trl), SD

Reporting: True, Located: True

Current AQI: 36.0

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
April 6, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 11.0 μg/m3 (10) 3.6 μg/m3 (15) 36.0
 
April 6, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 12.0 μg/m3 (11) 1.2 μg/m3 (5) 37.0
 
April 6, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 7.0 μg/m3 (6) 1.2 μg/m3 (5) 35.0
 
April 6, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 5.0 μg/m3 (5) 0.7 μg/m3 (3) 34.0
 
April 6, 2020, 3 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) -0.2 μg/m3 (0) 33.0
 
April 6, 2020, 2 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) -0.2 μg/m3 (0) 33.0
 
April 6, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 10.0 μg/m3 (9) 0.9 μg/m3 (4) 34.0
 
April 6, 2020, noon N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 10.0 μg/m3 (9) 0.7 μg/m3 (3) 35.0
 
April 6, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 8.0 μg/m3 (7) 1.6 μg/m3 (7) 35.0
 
April 6, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 7.0 μg/m3 (6) 0.9 μg/m3 (4) 29.0
 
April 6, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 8.0 μg/m3 (7) 0.7 μg/m3 (3) 31.0
 
April 6, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 6.0 μg/m3 (5) 1.4 μg/m3 (6) 36.0
 
April 6, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) 1.9 μg/m3 (8) 36.0
 
April 6, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 8.0 μg/m3 (7) 3.8 μg/m3 (16) 38.0
 
April 6, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) 2.8 μg/m3 (12) 36.0
 
April 6, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 6.0 μg/m3 (5) 2.2 μg/m3 (9) 37.0
 
April 6, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 12.0 μg/m3 (11) 2.4 μg/m3 (10) 37.0
 
April 6, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 9.0 μg/m3 (8) 0.9 μg/m3 (4) 36.0
 
April 6, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 36.0
 
April 6, 2020, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 9.0 μg/m3 (8) 4.7 μg/m3 (20) 37.0
 
April 5, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 10.0 μg/m3 (9) 2.6 μg/m3 (11) 38.0
 
April 5, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 9.0 μg/m3 (8) 0.9 μg/m3 (4) 37.0
 
April 5, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 13.0 μg/m3 (12) -1.5 μg/m3 (0) 35.0
 
April 5, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 10.0 μg/m3 (9) 0.7 μg/m3 (3) 32.0
 
April 5, 2020, 7 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) 2.2 μg/m3 (9) 31.0
 
April 5, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 11.0 μg/m3 (10) 2.8 μg/m3 (12) 31.0
 
April 5, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 4.2 μg/m3 (18) 18.0
 
April 5, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 4.7 μg/m3 (20) 20.0
 
April 5, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 1.1 μg/m3 (5) 28.0
 
April 5, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 12.0 μg/m3 (11) 0.2 μg/m3 (1) 26.0
 
April 5, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 6.0 μg/m3 (5) 0.7 μg/m3 (3) 27.0
 
April 5, 2020, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 31.0
 
April 5, 2020, 11 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) 2.4 μg/m3 (10) 32.0
 
April 5, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 2.0 μg/m3 (2) 1.4 μg/m3 (6) 35.0
 
April 5, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 4.0 μg/m3 (4) 2.4 μg/m3 (10) 35.0
 
April 5, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 8.0 μg/m3 (7) 3.1 μg/m3 (13) 34.0
 
April 5, 2020, 7 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) 0.7 μg/m3 (3) 33.0
 
April 5, 2020, 6 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) 1.4 μg/m3 (6) 32.0
 
April 5, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 9.0 μg/m3 (8) 2.6 μg/m3 (11) 32.0
 
April 5, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 8.0 μg/m3 (7) 3.5 μg/m3 (15) 31.0
 
April 5, 2020, 3 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) 2.6 μg/m3 (11) 32.0
 
April 5, 2020, 2 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) 2.4 μg/m3 (10) 33.0
 
April 5, 2020, 1 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) 0.0 μg/m3 (0) 32.0
 
April 5, 2020, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 6.0 μg/m3 (5) -1.7 μg/m3 (0) 36.0
 
April 4, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 6.0 μg/m3 (5) -0.2 μg/m3 (0) 39.0
 
April 4, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 5.0 μg/m3 (5) 0.2 μg/m3 (1) 39.0
 
April 4, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 5.0 μg/m3 (5) -0.7 μg/m3 (0) 38.0
 
April 4, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 3.0 μg/m3 (3) 1.9 μg/m3 (8) 38.0
 
April 4, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 2.0 μg/m3 (2) 2.6 μg/m3 (11) 36.0
 
April 4, 2020, 6 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) 3.1 μg/m3 (13) 35.0
 
April 4, 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) 1.2 μg/m3 (5) 32.0
 
April 4, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 9.0 μg/m3 (8) 3.6 μg/m3 (15) 28.0
 
April 4, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 11.0 μg/m3 (10) 4.7 μg/m3 (20) 26.0
 
April 4, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 9.0 μg/m3 (8) 1.2 μg/m3 (5) 25.0
 
April 4, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 10.0 μg/m3 (9) 0.7 μg/m3 (3) 26.0
 
April 4, 2020, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 9.0 μg/m3 (8) 2.4 μg/m3 (10) 27.0
 
April 4, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 1.2 μg/m3 (5) 28.0
 
April 4, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 7.0 μg/m3 (6) 1.1 μg/m3 (5) 28.0
 
April 4, 2020, 9 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) 3.3 μg/m3 (14) 27.0
 
April 4, 2020, 8 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) 0.9 μg/m3 (4) 28.0
 
April 4, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 5.0 μg/m3 (5) 1.2 μg/m3 (5) 28.0
 
April 4, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 8.0 μg/m3 (7) 4.3 μg/m3 (18) 29.0
 
April 4, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 2.0 μg/m3 (2) 7.0 μg/m3 (29) 30.0
 
April 4, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 5.0 μg/m3 (5) 4.5 μg/m3 (19) 31.0
 
April 4, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 5.0 μg/m3 (5) 3.5 μg/m3 (15) 32.0
 
April 4, 2020, 2 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) 3.5 μg/m3 (15) 32.0
 
April 4, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 1.0 μg/m3 (1) 4.7 μg/m3 (20) 28.0
 
April 4, 2020, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) 5.2 μg/m3 (22) 28.0
 
April 3, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 3.0 μg/m3 (3) 1.7 μg/m3 (7) 33.0
 
April 3, 2020, 10 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) 0.7 μg/m3 (3) 34.0
 
April 3, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 2.0 μg/m3 (2) 2.7 μg/m3 (11) 35.0
 
April 3, 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) 2.8 μg/m3 (12) 34.0
 
April 3, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) 4.5 μg/m3 (19) 32.0
 
April 3, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 9.0 μg/m3 (8) 6.5 μg/m3 (27) 30.0
 
April 3, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 12.0 μg/m3 (11) 3.8 μg/m3 (16) 30.0
 
April 3, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 7.0 μg/m3 (6) 2.4 μg/m3 (10) 28.0
 
April 3, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 9.0 μg/m3 (8) 3.8 μg/m3 (16) 27.0
 
April 3, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 7.0 μg/m3 (6) 3.3 μg/m3 (14) 26.0
 
April 3, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 27.0
 
April 3, 2020, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 7.0 μg/m3 (6) 7.0 μg/m3 (29) 29.0
 
April 3, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 8.0 μg/m3 (7) 7.7 μg/m3 (32) 32.0
 
April 3, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 6.0 μg/m3 (5) 7.7 μg/m3 (32) 32.0
 
April 3, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 9.0 μg/m3 (8) 7.2 μg/m3 (30) 30.0
 
April 3, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 13.0 μg/m3 (12) 6.7 μg/m3 (28) 28.0
 
April 3, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 7.0 μg/m3 (6) 4.7 μg/m3 (20) 27.0
 
April 3, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 27.0
 
April 3, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 3.1 μg/m3 (13) 27.0
 
April 3, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 6.0 μg/m3 (5) 6.2 μg/m3 (26) 28.0
 
April 3, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 5.0 μg/m3 (5) 7.9 μg/m3 (33) 33.0
 
April 3, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 7.0 μg/m3 (6) 4.7 μg/m3 (20) 28.0
 
April 3, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 5.0 μg/m3 (5) 4.7 μg/m3 (20) 29.0
 
April 3, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 6.0 μg/m3 (5) 3.8 μg/m3 (16) 30.0
 
April 2, 2020, 11 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) 3.3 μg/m3 (14) 30.0
 
April 2, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 7.0 μg/m3 (6) 2.6 μg/m3 (11) 29.0
 
April 2, 2020, 9 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) 4.7 μg/m3 (20) 28.0
 
April 2, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 4.0 μg/m3 (4) 8.2 μg/m3 (34) 34.0
 
April 2, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 2.0 μg/m3 (2) 4.2 μg/m3 (18) 25.0
 
April 2, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 3.0 μg/m3 (3) 3.8 μg/m3 (16) 25.0
 
April 2, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 1.0 μg/m3 (1) 4.7 μg/m3 (20) 23.0
 
April 2, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 4.0 μg/m3 (4) 6.2 μg/m3 (26) 26.0
 
April 2, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 7.0 μg/m3 (6) 5.2 μg/m3 (22) 22.0
 
April 2, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 4.0 μg/m3 (4) 4.3 μg/m3 (18) 22.0
 
April 2, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A -2.0 μg/m3 (0) 3.5 μg/m3 (15) 22.0
 
April 2, 2020, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 0.0 μg/m3 (0) 4.2 μg/m3 (18) 22.0
 
April 2, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 3.0 μg/m3 (3) 4.2 μg/m3 (18) 22.0
 
April 2, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 21.0
 
April 2, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
April 2, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 6.0 μg/m3 (5) 5.4 μg/m3 (23) 23.0
 
April 2, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 3.0 μg/m3 (3) 5.2 μg/m3 (22) 22.0
 
April 2, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 5.0 μg/m3 (5) 5.7 μg/m3 (24) 24.0
 
April 2, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 5.0 μg/m3 (5) 3.5 μg/m3 (15) 18.0
 
April 2, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 6.0 μg/m3 (5) 3.1 μg/m3 (13) 18.0
 
April 2, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 9.0 μg/m3 (8) 3.5 μg/m3 (15) 25.0
 
April 2, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 6.0 μg/m3 (5) 3.1 μg/m3 (13) 20.0
 
April 2, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 14.0
 
April 2, 2020, midnight N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 9.0 μg/m3 (8) 0.1 μg/m3 (0) 14.0
 
April 1, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 9.0 μg/m3 (8) 0.7 μg/m3 (3) 13.0
 
April 1, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 12.0 μg/m3 (11) 1.6 μg/m3 (7) 13.0
 
April 1, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 13.0 μg/m3 (12) 1.7 μg/m3 (7) 15.0
 
April 1, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 21.0
 
April 1, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 16.0 μg/m3 (15) 1.6 μg/m3 (7) 21.0
 
April 1, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 14.0 μg/m3 (13) 4.3 μg/m3 (18) 19.0
 
April 1, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 2.0 μg/m3 (2) 2.2 μg/m3 (9) 26.0
 
April 1, 2020, 4 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) 1.2 μg/m3 (5) 30.0
 
April 1, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) 1.4 μg/m3 (6) 30.0
 
April 1, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 7.0 μg/m3 (6) 3.3 μg/m3 (14) 30.0
 
April 1, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) 3.8 μg/m3 (16) 31.0
 
April 1, 2020, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 5.0 μg/m3 (5) 0.9 μg/m3 (4) 32.0
 
April 1, 2020, 11 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) 0.9 μg/m3 (4) 33.0
 
April 1, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) 2.6 μg/m3 (11) 31.0
 
April 1, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 7.0 μg/m3 (6) 3.8 μg/m3 (16) 31.0
 
April 1, 2020, 8 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) 3.8 μg/m3 (16) 32.0
 
April 1, 2020, 7 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) 1.7 μg/m3 (7) 33.0
 
April 1, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 11.0 μg/m3 (10) -0.2 μg/m3 (0) 32.0
 
April 1, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 11.0 μg/m3 (10) 0.4 μg/m3 (2) 31.0
 
April 1, 2020, 4 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) 1.7 μg/m3 (7) 32.0
 
April 1, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 9.0 μg/m3 (8) 3.6 μg/m3 (15) 33.0
 
April 1, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 6.0 μg/m3 (5) 2.9 μg/m3 (12) 33.0
 
April 1, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 5.0 μg/m3 (5) 0.9 μg/m3 (4) 34.0
 
April 1, 2020, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 7.0 μg/m3 (6) 0.9 μg/m3 (4) 35.0
 
March 31, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 36.0
 
March 31, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 4.0 μg/m3 (4) 2.5 μg/m3 (10) 37.0
 
March 31, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 7.0 μg/m3 (6) 2.4 μg/m3 (10) 37.0
 
March 31, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 12.0 μg/m3 (11) 1.2 μg/m3 (5) 37.0
 
March 31, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 19.0 μg/m3 (17) -1.2 μg/m3 (0) 37.0
 
March 31, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 12.0 μg/m3 (11) -0.2 μg/m3 (0) 36.0
 
March 31, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 10.0 μg/m3 (9) 1.2 μg/m3 (5) 34.0
 
March 31, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 8.0 μg/m3 (7) 0.4 μg/m3 (2) 32.0
 
March 31, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 15.0 μg/m3 (14) 0.9 μg/m3 (4) 32.0
 
March 31, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 6.0 μg/m3 (5) -0.5 μg/m3 (0) 30.0
 
March 31, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) -0.9 μg/m3 (0) 29.0
 
March 31, 2020, noon N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 5.0 μg/m3 (5) -0.2 μg/m3 (0) 29.0
 
March 31, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 6.0 μg/m3 (5) -0.2 μg/m3 (0) 30.0
 
March 31, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 6.0 μg/m3 (5) 1.2 μg/m3 (5) 28.0
 
March 31, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 5.0 μg/m3 (5) 2.1 μg/m3 (9) 28.0
 
March 31, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 11.0 μg/m3 (10) 3.5 μg/m3 (15) 28.0
 
March 31, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 8.0 μg/m3 (7) 6.2 μg/m3 (26) 26.0
 
March 31, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 11.0 μg/m3 (10) 7.2 μg/m3 (30) 30.0
 
March 31, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 13.0 μg/m3 (12) 4.8 μg/m3 (20) 26.0
 
March 31, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 14.0 μg/m3 (13) 3.5 μg/m3 (15) 28.0
 
March 31, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 29.0
 
March 31, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 10.0 μg/m3 (9) 3.5 μg/m3 (15) 30.0
 
March 31, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 16.0 μg/m3 (15) 5.5 μg/m3 (23) 30.0
 
March 31, 2020, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 3.5 μg/m3 (15) 33.0
 
March 30, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 38.0
 
March 30, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 4.0 μg/m3 (4) 1.7 μg/m3 (7) 37.0
 
March 30, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 6.0 μg/m3 (5) 1.4 μg/m3 (6) 38.0
 
March 30, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 4.0 μg/m3 (4) 1.4 μg/m3 (6) 38.0