AQSQID: 461270001

Site Name: Uc1

Location: Union Co, SD

Reporting: True, Located: True

Current AQI: 29.0

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
Jan. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 24.0 μg/m3 (22) 1.4 μg/m3 (6) 29.0
 
Jan. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 28.0 μg/m3 (25) 3.6 μg/m3 (15) 29.0
 
Jan. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 18.0 μg/m3 (16) 5.0 μg/m3 (21) 28.0
 
Jan. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 15.0 μg/m3 (14) 3.6 μg/m3 (15) 28.0
 
Jan. 19, 2019, 1 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) 3.8 μg/m3 (16) 29.0
 
Jan. 19, 2019, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 21.0 μg/m3 (19) 5.5 μg/m3 (23) 28.0
 
Jan. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 31.0 μg/m3 (28) 4.8 μg/m3 (20) 28.0
 
Jan. 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 33.0 μg/m3 (30) 6.4 μg/m3 (27) 30.0
 
Jan. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 19.0 μg/m3 (17) 6.2 μg/m3 (26) 26.0
 
Jan. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 17.0 μg/m3 (15) 6.6 μg/m3 (28) 28.0
 
Jan. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 30.0 μg/m3 (27) 8.9 μg/m3 (37) 37.0
 
Jan. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 23.0 μg/m3 (21) 9.9 μg/m3 (41) 41.0
 
Jan. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 13.0 μg/m3 (12) 11.8 μg/m3 (49) 49.0
 
Jan. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 13.0 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
Jan. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 12.0 μg/m3 (11) 8.6 μg/m3 (36) 36.0
 
Jan. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 22.0 μg/m3 (20) 8.1 μg/m3 (34) 34.0
 
Jan. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 10.0 μg/m3 (9) 10.6 μg/m3 (44) 44.0
 
Jan. 18, 2019, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 7.0 μg/m3 (6) 4.6 μg/m3 (19) 23.0
 
Jan. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 12.0 μg/m3 (11) 5.5 μg/m3 (23) 24.0
 
Jan. 18, 2019, 10 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) 5.0 μg/m3 (21) 25.0
 
Jan. 18, 2019, 9 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) 4.3 μg/m3 (18) 27.0
 
Jan. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 5.0 μg/m3 (5) 4.3 μg/m3 (18) 22.0
 
Jan. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 7.0 μg/m3 (6) 4.1 μg/m3 (17) 24.0
 
Jan. 18, 2019, 6 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) 6.9 μg/m3 (29) 29.0
 
Jan. 18, 2019, 5 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) 5.5 μg/m3 (23) 23.0
 
Jan. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 4.0 μg/m3 (4) 3.1 μg/m3 (13) 19.0
 
Jan. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 3.0 μg/m3 (3) 4.3 μg/m3 (18) 22.0
 
Jan. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 3.0 μg/m3 (3) 7.6 μg/m3 (32) 32.0
 
Jan. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 4.0 μg/m3 (4) 7.6 μg/m3 (32) 32.0
 
Jan. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 8.0 μg/m3 (7) 7.4 μg/m3 (31) 31.0
 
Jan. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 12.0 μg/m3 (11) 9.4 μg/m3 (39) 39.0
 
Jan. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 11.0 μg/m3 (10) 12.8 μg/m3 (52) 52.0
 
Jan. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 13.0 μg/m3 (12) 10.4 μg/m3 (43) 43.0
 
Jan. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 17.0 μg/m3 (15) 9.6 μg/m3 (40) 40.0
 
Jan. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 16.0 μg/m3 (15) 9.9 μg/m3 (41) 41.0
 
Jan. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 14.0 μg/m3 (13) 8.9 μg/m3 (37) 37.0
 
Jan. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 18.0 μg/m3 (16) 13.3 μg/m3 (53) 53.0
 
Jan. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 22.0 μg/m3 (20) 14.8 μg/m3 (56) 56.0
 
Jan. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 25.0 μg/m3 (23) N/A 23.0
 
Jan. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 11.0 μg/m3 (10) N/A 12.0
 
Jan. 17, 2019, noon N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 16.0 μg/m3 (15) N/A 15.0
 
Jan. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 14.0 μg/m3 (13) N/A 13.0
 
Jan. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 18.0 μg/m3 (16) N/A 16.0
 
Jan. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 15.0 μg/m3 (14) N/A 14.0
 
Jan. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 12.0 μg/m3 (11) N/A 12.0
 
Jan. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 14.0 μg/m3 (13) N/A 13.0
 
Jan. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 13.0 μg/m3 (12) N/A 12.0
 
Jan. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 14.0 μg/m3 (13) N/A 13.0
 
Jan. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 10.0 μg/m3 (9) N/A 14.0
 
Jan. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 18.0 μg/m3 (16) N/A 16.0
 
Jan. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 11.0 μg/m3 (10) N/A 15.0
 
Jan. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 18.0 μg/m3 (16) N/A 16.0
 
Jan. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 14.0 μg/m3 (13) N/A 16.0
 
Jan. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 12.0 μg/m3 (11) N/A 18.0
 
Jan. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 14.0 μg/m3 (13) N/A 18.0
 
Jan. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 16.0 μg/m3 (15) N/A 19.0
 
Jan. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 15.0 μg/m3 (14) N/A 20.0
 
Jan. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 11.0 μg/m3 (10) N/A 20.0
 
Jan. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 13.0 μg/m3 (12) N/A 21.0
 
Jan. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 11.0 μg/m3 (10) N/A 21.0
 
Jan. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 13.0 μg/m3 (12) N/A 21.0
 
Jan. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 9.0 μg/m3 (8) N/A 21.0
 
Jan. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 8.0 μg/m3 (7) N/A 20.0
 
Jan. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 10.0 μg/m3 (9) N/A 19.0
 
Jan. 16, 2019, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 7.0 μg/m3 (6) N/A 21.0
 
Jan. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 6.0 μg/m3 (5) N/A 22.0
 
Jan. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 9.0 μg/m3 (8) N/A 20.0
 
Jan. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 15.0 μg/m3 (14) 11.8 μg/m3 (49) 49.0
 
Jan. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 18.0 μg/m3 (16) 13.8 μg/m3 (54) 54.0
 
Jan. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 16.0 μg/m3 (15) 12.6 μg/m3 (51) 51.0
 
Jan. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 15.0 μg/m3 (14) 11.8 μg/m3 (49) 49.0
 
Jan. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 15.0 μg/m3 (14) 16.3 μg/m3 (59) 59.0
 
Jan. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 15.0 μg/m3 (14) 14.5 μg/m3 (55) 55.0
 
Jan. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 14.0 μg/m3 (13) 11.1 μg/m3 (46) 46.0
 
Jan. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 14.0 μg/m3 (13) 9.6 μg/m3 (40) 40.0
 
Jan. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 13.0 μg/m3 (12) 8.6 μg/m3 (36) 36.0
 
Jan. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 12.0 μg/m3 (11) 10.4 μg/m3 (43) 43.0
 
Jan. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 11.0 μg/m3 (10) 2.6 μg/m3 (11) 15.0
 
Jan. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 12.0 μg/m3 (11) 0.8 μg/m3 (3) 16.0
 
Jan. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 19.0 μg/m3 (17) 1.1 μg/m3 (5) 18.0
 
Jan. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 5.0 μg/m3 (5) 7.4 μg/m3 (31) 31.0
 
Jan. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 17.0 μg/m3 (15) 12.8 μg/m3 (52) 52.0
 
Jan. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Jan. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 7.0 μg/m3 (6) 6.6 μg/m3 (28) 28.0
 
Jan. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 13.0 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
Jan. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 6.0 μg/m3 (5) 4.3 μg/m3 (18) 18.0
 
Jan. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 6.0 μg/m3 (5) 5.2 μg/m3 (22) 22.0
 
Jan. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 4.0 μg/m3 (4) 6.4 μg/m3 (27) 27.0
 
Jan. 15, 2019, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 6.0 μg/m3 (5) 6.4 μg/m3 (27) 27.0
 
Jan. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 7.0 μg/m3 (6) 4.5 μg/m3 (19) 19.0
 
Jan. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 10.0 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
Jan. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 9.0 μg/m3 (8) 9.8 μg/m3 (41) 41.0
 
Jan. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 11.0 μg/m3 (10) 8.6 μg/m3 (36) 36.0
 
Jan. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 9.0 μg/m3 (8) 6.9 μg/m3 (29) 29.0
 
Jan. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 7.0 μg/m3 (6) 9.1 μg/m3 (38) 38.0
 
Jan. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 7.0 μg/m3 (6) 6.6 μg/m3 (28) 28.0
 
Jan. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 6.0 μg/m3 (5) 8.6 μg/m3 (36) 36.0
 
Jan. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 8.0 μg/m3 (7) 8.1 μg/m3 (34) 34.0
 
Jan. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 12.0 μg/m3 (11) 9.1 μg/m3 (38) 38.0
 
Jan. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 11.0 μg/m3 (10) 7.1 μg/m3 (30) 30.0
 
Jan. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 9.0 μg/m3 (8) 9.6 μg/m3 (40) 40.0
 
Jan. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 11.0 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
Jan. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A -16.0 μg/m3 (0) 8.1 μg/m3 (34) 34.0
 
Jan. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A -16.0 μg/m3 (0) 7.6 μg/m3 (32) 32.0
 
Jan. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 16.0 μg/m3 (15) 10.1 μg/m3 (42) 42.0
 
Jan. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 8.0 μg/m3 (7) 8.4 μg/m3 (35) 35.0
 
Jan. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 10.0 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
Jan. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 9.0 μg/m3 (8) 5.2 μg/m3 (22) 22.0
 
Jan. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 8.0 μg/m3 (7) 3.8 μg/m3 (16) 16.0
 
Jan. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 6.0 μg/m3 (5) 4.5 μg/m3 (19) 19.0
 
Jan. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 3.0 μg/m3 (3) 4.1 μg/m3 (17) 17.0
 
Jan. 14, 2019, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 3.0 μg/m3 (3) 5.3 μg/m3 (22) 22.0
 
Jan. 14, 2019, 11 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) 9.1 μg/m3 (38) 38.0
 
Jan. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 9.0 μg/m3 (8) 7.1 μg/m3 (30) 30.0
 
Jan. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 8.0 μg/m3 (7) 6.6 μg/m3 (28) 28.0
 
Jan. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 5.0 μg/m3 (5) 6.4 μg/m3 (27) 27.0
 
Jan. 14, 2019, 7 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) 4.8 μg/m3 (20) 20.0
 
Jan. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 5.0 μg/m3 (5) 7.3 μg/m3 (30) 30.0
 
Jan. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 4.0 μg/m3 (4) 7.1 μg/m3 (30) 30.0
 
Jan. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 25.0
 
Jan. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 5.0 μg/m3 (5) 5.7 μg/m3 (24) 26.0
 
Jan. 14, 2019, 2 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) 6.4 μg/m3 (27) 27.0
 
Jan. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 9.0 μg/m3 (8) 11.1 μg/m3 (46) 46.0
 
Jan. 14, 2019, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 12.0 μg/m3 (11) 12.8 μg/m3 (52) 52.0
 
Jan. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 11.0 μg/m3 (10) 9.1 μg/m3 (38) 38.0
 
Jan. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 16.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
Jan. 13, 2019, 9 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) 4.8 μg/m3 (20) 27.0
 
Jan. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 16.0 μg/m3 (15) 6.4 μg/m3 (27) 27.0
 
Jan. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 20.0 μg/m3 (18) 18.4 μg/m3 (64) 64.0
 
Jan. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 29.0 μg/m3 (26) 16.0 μg/m3 (59) 59.0
 
Jan. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 34.0 μg/m3 (31) 20.2 μg/m3 (67) 67.0
 
Jan. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 20.0 μg/m3 (18) 15.2 μg/m3 (57) 57.0
 
Jan. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 17.0 μg/m3 (15) 13.8 μg/m3 (54) 54.0
 
Jan. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 20.0 μg/m3 (18) 15.2 μg/m3 (57) 57.0
 
Jan. 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 22.0 μg/m3 (20) 18.9 μg/m3 (65) 65.0
 
Jan. 13, 2019, noon N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 24.0 μg/m3 (22) 22.6 μg/m3 (73) 73.0
 
Jan. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 28.0 μg/m3 (25) 13.3 μg/m3 (53) 53.0
 
Jan. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 26.0 μg/m3 (24) 14.0 μg/m3 (54) 54.0
 
Jan. 13, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 29.0 μg/m3 (26) 15.0 μg/m3 (56) 56.0
 
Jan. 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 37.0 μg/m3 (34) 17.7 μg/m3 (62) 62.0
 
Jan. 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 39.0 μg/m3 (35) 20.2 μg/m3 (67) 67.0
 
Jan. 13, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 38.0 μg/m3 (35) 18.9 μg/m3 (65) 65.0
 
Jan. 13, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 40.0 μg/m3 (36) 22.4 μg/m3 (72) 72.0
 
Jan. 13, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 28.0 μg/m3 (25) 20.7 μg/m3 (69) 69.0
 
Jan. 13, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 37.0 μg/m3 (34) 20.4 μg/m3 (68) 68.0
 
Jan. 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 42.0 μg/m3 (38) 22.6 μg/m3 (73) 73.0
 
Jan. 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 38.0 μg/m3 (35) 22.4 μg/m3 (72) 72.0
 
Jan. 13, 2019, midnight N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 43.0 μg/m3 (39) 17.0 μg/m3 (61) 61.0
 
Jan. 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 44.0 μg/m3 (40) 23.8 μg/m3 (75) 75.0
 
Jan. 12, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 33.0 μg/m3 (30) 17.9 μg/m3 (63) 63.0
 
Jan. 12, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 36.0 μg/m3 (33) 19.7 μg/m3 (66) 66.0
 
Jan. 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 37.0 μg/m3 (34) 19.7 μg/m3 (66) 66.0
 
Jan. 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 34.0 μg/m3 (31) 18.7 μg/m3 (64) 64.0
 
Jan. 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 32.0 μg/m3 (29) 16.8 μg/m3 (60) 60.0
 
Jan. 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 29.0 μg/m3 (26) 15.7 μg/m3 (58) 58.0
 
Jan. 12, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 37.0 μg/m3 (34) 20.7 μg/m3 (69) 69.0
 
Jan. 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 46.0 μg/m3 (42) 25.5 μg/m3 (79) 79.0
 
Jan. 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 40.0 μg/m3 (36) 26.5 μg/m3 (81) 81.0
 
Jan. 12, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 31.0 μg/m3 (28) 23.1 μg/m3 (74) 74.0
 
Jan. 12, 2019, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 25.0 μg/m3 (23) 17.2 μg/m3 (61) 61.0
 
Jan. 12, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 22.0 μg/m3 (20) 19.2 μg/m3 (65) 65.0
 
Jan. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 23.0 μg/m3 (21) 17.3 μg/m3 (61) 61.0
 
Jan. 12, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 21.0 μg/m3 (19) 11.3 μg/m3 (47) 47.0
 
Jan. 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 21.0 μg/m3 (19) 14.0 μg/m3 (54) 54.0
 
Jan. 12, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 18.0 μg/m3 (16) 10.8 μg/m3 (45) 45.0
 
Jan. 12, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 26.0 μg/m3 (24) 15.7 μg/m3 (58) 58.0
 
Jan. 12, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 27.0 μg/m3 (25) 9.1 μg/m3 (38) 38.0