AQSQID: 461270001

Site Name: Uc1

Location: Union Co, SD

Reporting: False, Located: True

Current AQI: None

Union Co SD, US: 42.751518, -96.707208

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 5, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 5.3 μg/m3 (22) 22.0
 
March 5, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 5.1 μg/m3 (21) 21.0
 
March 5, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 6.6 μg/m3 (28) 28.0
 
March 5, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 5.9 μg/m3 (25) 25.0
 
March 5, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 7.1 μg/m3 (30) 30.0
 
March 5, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
March 5, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 7.1 μg/m3 (30) 30.0
 
March 5, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
March 5, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 2.4 μg/m3 (10) 10.0
 
March 5, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 2.4 μg/m3 (10) 10.0
 
March 5, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 2.6 μg/m3 (11) 11.0
 
March 5, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 14.0
 
March 5, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 14.0
 
March 5, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 2.8 μg/m3 (12) 12.0
 
March 5, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (31) 4.6 μg/m3 (19) 31.0
 
March 5, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 3.8 μg/m3 (16) 16.0
 
March 5, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 4.1 μg/m3 (17) 17.0
 
March 5, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 14.0
 
March 5, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 4.3 μg/m3 (18) 18.0
 
March 5, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.6 μg/m3 (19) 19.0
 
March 5, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
March 5, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 5.5 μg/m3 (23) 23.0
 
March 4, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 3.3 μg/m3 (14) 14.0
 
March 4, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 5.0 μg/m3 (21) 21.0
 
March 4, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 6.7 μg/m3 (28) 28.0
 
March 4, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 4.3 μg/m3 (18) 20.0
 
March 4, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (22) 1.6 μg/m3 (7) 22.0
 
March 4, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) N/A 16.0
 
March 4, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 18.0 μg/m3 (16) 5.5 μg/m3 (23) 23.0
 
March 4, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 6.2 μg/m3 (26) 26.0
 
March 4, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 7.0 μg/m3 (6) 5.7 μg/m3 (24) 24.0
 
March 4, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 7.0 μg/m3 (6) 3.9 μg/m3 (16) 16.0
 
March 4, 2019, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 12.0 μg/m3 (11) 4.2 μg/m3 (18) 18.0
 
March 4, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 11.0 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
March 4, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 6.3 μg/m3 (26) 26.0
 
March 4, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 17.0
 
March 4, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 10.0 μg/m3 (9) 5.2 μg/m3 (22) 22.0
 
March 4, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
March 4, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 10.0 μg/m3 (9) 4.7 μg/m3 (20) 20.0
 
March 4, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 14.0 μg/m3 (13) 7.2 μg/m3 (30) 30.0
 
March 4, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 11.0 μg/m3 (10) 9.3 μg/m3 (39) 39.0
 
March 4, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 13.0 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
March 4, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 6.2 μg/m3 (26) 26.0
 
March 4, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 11.0 μg/m3 (10) 6.2 μg/m3 (26) 26.0
 
March 4, 2019, midnight N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 10.0 μg/m3 (9) 5.7 μg/m3 (24) 24.0
 
March 3, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 14.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
March 3, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 42.0 μg/m3 (38) 3.3 μg/m3 (14) 38.0
 
March 3, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 37.0 μg/m3 (34) 5.8 μg/m3 (24) 34.0
 
March 3, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 17.0 μg/m3 (15) 2.8 μg/m3 (12) 15.0
 
March 3, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 28.0 μg/m3 (25) 4.5 μg/m3 (19) 25.0
 
March 3, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 11.0 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
March 3, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 10.0 μg/m3 (9) 2.8 μg/m3 (12) 12.0
 
March 3, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 5.0 μg/m3 (5) 5.2 μg/m3 (22) 22.0
 
March 3, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
March 3, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 13.0 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
March 3, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 11.0 μg/m3 (10) 9.2 μg/m3 (38) 38.0
 
March 3, 2019, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 9.5 μg/m3 (40) 40.0
 
March 3, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 8.7 μg/m3 (36) 36.0
 
March 3, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 7.0 μg/m3 (6) 9.1 μg/m3 (38) 38.0
 
March 3, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 5.7 μg/m3 (24) 24.0
 
March 3, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 6.0 μg/m3 (5) 6.7 μg/m3 (28) 28.0
 
March 3, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 6.0 μg/m3 (5) 8.1 μg/m3 (34) 34.0
 
March 3, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 7.0 μg/m3 (6) 4.3 μg/m3 (18) 18.0
 
March 3, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 5.0 μg/m3 (5) 4.1 μg/m3 (17) 17.0
 
March 3, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 3.8 μg/m3 (16) 16.0
 
March 3, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 13.0 μg/m3 (12) 4.3 μg/m3 (18) 18.0
 
March 3, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 13.0 μg/m3 (12) 5.7 μg/m3 (24) 24.0
 
March 3, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 24.0 μg/m3 (22) 10.6 μg/m3 (44) 44.0
 
March 3, 2019, midnight N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 19.0 μg/m3 (17) 9.6 μg/m3 (40) 40.0
 
March 2, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 17.0 μg/m3 (15) 7.2 μg/m3 (30) 30.0
 
March 2, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 20.0 μg/m3 (18) 5.3 μg/m3 (22) 22.0
 
March 2, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 57.0 μg/m3 (51) 4.3 μg/m3 (18) 51.0
 
March 2, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 79.0 μg/m3 (62) 6.0 μg/m3 (25) 62.0
 
March 2, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 29.0 μg/m3 (26) 5.5 μg/m3 (23) 26.0
 
March 2, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 5.0 μg/m3 (5) 4.6 μg/m3 (19) 19.0
 
March 2, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 5.0 μg/m3 (5) 5.7 μg/m3 (24) 24.0
 
March 2, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 4.0 μg/m3 (4) 6.2 μg/m3 (26) 26.0
 
March 2, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 5.0 μg/m3 (5) 7.3 μg/m3 (30) 30.0
 
March 2, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 7.0 μg/m3 (6) 11.8 μg/m3 (49) 49.0
 
March 2, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 7.1 μg/m3 (30) 30.0
 
March 2, 2019, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 13.0 μg/m3 (12) 11.1 μg/m3 (46) 46.0
 
March 2, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 14.0 μg/m3 (13) 10.4 μg/m3 (43) 43.0
 
March 2, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 8.0 μg/m3 (7) 12.3 μg/m3 (51) 51.0
 
March 2, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 7.3 μg/m3 (30) 30.0
 
March 2, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 8.6 μg/m3 (36) 36.0
 
March 2, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 6.7 μg/m3 (28) 28.0
 
March 2, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 5.0 μg/m3 (5) 9.9 μg/m3 (41) 41.0
 
March 2, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 7.0 μg/m3 (6) 8.1 μg/m3 (34) 34.0
 
March 2, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 7.1 μg/m3 (30) 30.0
 
March 2, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 12.0 μg/m3 (11) 8.8 μg/m3 (37) 37.0
 
March 2, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 14.0 μg/m3 (13) 11.1 μg/m3 (46) 46.0
 
March 2, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 12.0 μg/m3 (11) 13.5 μg/m3 (53) 53.0
 
March 2, 2019, midnight N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 18.0 μg/m3 (16) 20.7 μg/m3 (69) 69.0
 
March 1, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 39.0 μg/m3 (35) 22.6 μg/m3 (73) 73.0
 
March 1, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 31.0 μg/m3 (28) 23.4 μg/m3 (74) 74.0
 
March 1, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 28.0 μg/m3 (25) 22.9 μg/m3 (73) 73.0
 
March 1, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 27.0 μg/m3 (25) 25.8 μg/m3 (79) 79.0
 
March 1, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 30.0 μg/m3 (27) 26.1 μg/m3 (80) 80.0
 
March 1, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 30.0 μg/m3 (27) 20.7 μg/m3 (69) 69.0
 
March 1, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 30.0 μg/m3 (27) 26.3 μg/m3 (80) 80.0
 
March 1, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 33.0 μg/m3 (30) 23.6 μg/m3 (75) 75.0
 
March 1, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 45.0 μg/m3 (41) 22.1 μg/m3 (71) 71.0
 
March 1, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 29.0 μg/m3 (26) 23.4 μg/m3 (74) 74.0
 
March 1, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 29.0 μg/m3 (26) 25.8 μg/m3 (79) 79.0
 
March 1, 2019, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 24.0 μg/m3 (22) 18.0 μg/m3 (63) 63.0
 
March 1, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 31.0 μg/m3 (28) 18.9 μg/m3 (65) 65.0
 
March 1, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 23.0 μg/m3 (21) 19.9 μg/m3 (67) 67.0
 
March 1, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 18.0 μg/m3 (16) 17.3 μg/m3 (61) 61.0
 
March 1, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 17.0 μg/m3 (15) 17.5 μg/m3 (62) 62.0
 
March 1, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 15.0 μg/m3 (14) 13.6 μg/m3 (53) 53.0
 
March 1, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 15.0 μg/m3 (14) 16.5 μg/m3 (60) 60.0
 
March 1, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 16.0 μg/m3 (15) 10.9 μg/m3 (45) 45.0
 
March 1, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 16.0 μg/m3 (15) 11.6 μg/m3 (48) 48.0
 
March 1, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 12.0 μg/m3 (11) 7.6 μg/m3 (32) 32.0
 
March 1, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 14.0 μg/m3 (13) 9.9 μg/m3 (41) 41.0
 
March 1, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 14.0 μg/m3 (13) 11.6 μg/m3 (48) 48.0
 
March 1, 2019, midnight N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 13.0 μg/m3 (12) 8.6 μg/m3 (36) 36.0
 
Feb. 28, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 9.6 μg/m3 (40) 40.0
 
Feb. 28, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 10.0 μg/m3 (9) 5.3 μg/m3 (22) 22.0
 
Feb. 28, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 4.6 μg/m3 (19) 19.0
 
Feb. 28, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 6.0 μg/m3 (5) 6.7 μg/m3 (28) 28.0
 
Feb. 28, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 5.0 μg/m3 (5) 5.9 μg/m3 (25) 25.0
 
Feb. 28, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 7.0 μg/m3 (6) 6.9 μg/m3 (29) 29.0
 
Feb. 28, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 10.0 μg/m3 (9) 4.3 μg/m3 (18) 18.0
 
Feb. 28, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 12.0 μg/m3 (11) 6.4 μg/m3 (27) 27.0
 
Feb. 28, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 16.0 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
Feb. 28, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 8.6 μg/m3 (36) 36.0
 
Feb. 28, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 8.4 μg/m3 (35) 35.0
 
Feb. 28, 2019, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 13.0 μg/m3 (12) 10.4 μg/m3 (43) 43.0
 
Feb. 28, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 10.0 μg/m3 (9) 7.1 μg/m3 (30) 30.0
 
Feb. 28, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 14.0 μg/m3 (13) 8.1 μg/m3 (34) 34.0
 
Feb. 28, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 10.0 μg/m3 (9) 10.1 μg/m3 (42) 42.0
 
Feb. 28, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 17.0 μg/m3 (15) 13.3 μg/m3 (53) 53.0
 
Feb. 28, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 7.9 μg/m3 (33) 33.0
 
Feb. 28, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 15.0 μg/m3 (14) 12.1 μg/m3 (50) 50.0
 
Feb. 28, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 15.0 μg/m3 (14) 13.0 μg/m3 (52) 52.0
 
Feb. 28, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 12.0 μg/m3 (11) 11.4 μg/m3 (48) 48.0
 
Feb. 28, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 12.0 μg/m3 (11) 13.5 μg/m3 (53) 53.0
 
Feb. 28, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 15.0 μg/m3 (14) 10.4 μg/m3 (43) 43.0
 
Feb. 28, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 17.0 μg/m3 (15) 15.3 μg/m3 (57) 57.0
 
Feb. 28, 2019, midnight N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 15.0 μg/m3 (14) 16.0 μg/m3 (59) 59.0
 
Feb. 27, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 13.0 μg/m3 (12) 8.4 μg/m3 (35) 35.0
 
Feb. 27, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 23.0 μg/m3 (21) 9.6 μg/m3 (40) 40.0
 
Feb. 27, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 16.0 μg/m3 (15) 10.8 μg/m3 (45) 45.0
 
Feb. 27, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 20.0 μg/m3 (18) 12.1 μg/m3 (50) 50.0
 
Feb. 27, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 13.0 μg/m3 (12) 11.8 μg/m3 (49) 49.0
 
Feb. 27, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 2.8 μg/m3 (12) 12.0
 
Feb. 27, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 11.0 μg/m3 (10) 4.1 μg/m3 (17) 17.0
 
Feb. 27, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 10.0 μg/m3 (9) 4.6 μg/m3 (19) 19.0
 
Feb. 27, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 17.0 μg/m3 (15) 4.3 μg/m3 (18) 18.0
 
Feb. 27, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 7.0 μg/m3 (6) 5.5 μg/m3 (23) 23.0
 
Feb. 27, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 12.0 μg/m3 (11) 7.9 μg/m3 (33) 33.0
 
Feb. 27, 2019, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 15.0 μg/m3 (14) 5.9 μg/m3 (25) 25.0
 
Feb. 27, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 15.0 μg/m3 (14) 9.4 μg/m3 (39) 39.0
 
Feb. 27, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 18.0 μg/m3 (16) 9.1 μg/m3 (38) 38.0
 
Feb. 27, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 28.0 μg/m3 (25) 11.1 μg/m3 (46) 46.0
 
Feb. 27, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 27.0 μg/m3 (25) 8.6 μg/m3 (36) 36.0
 
Feb. 27, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 14.0 μg/m3 (13) 6.9 μg/m3 (29) 29.0
 
Feb. 27, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 18.0 μg/m3 (16) 9.6 μg/m3 (40) 40.0
 
Feb. 27, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 10.0 μg/m3 (9) 5.3 μg/m3 (22) 22.0
 
Feb. 27, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 4.3 μg/m3 (18) 18.0
 
Feb. 27, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 17.0 μg/m3 (15) 7.4 μg/m3 (31) 31.0
 
Feb. 27, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 15.0 μg/m3 (14) 5.7 μg/m3 (24) 24.0
 
Feb. 27, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 16.0 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
Feb. 27, 2019, midnight N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 14.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
Feb. 26, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 12.0 μg/m3 (11) 6.4 μg/m3 (27) 27.0
 
Feb. 26, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 10.6 μg/m3 (44) 44.0
 
Feb. 26, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 18.0 μg/m3 (16) 9.6 μg/m3 (40) 40.0