AQSQID: 461270001

Site Name: Uc1

Location: Union Co, SD

Reporting: True, Located: True

Current AQI: 41.0

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
Nov. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 42.0 μg/m3 (38) 9.9 μg/m3 (41) 41.0
 
Nov. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 37.0 μg/m3 (34) 8.6 μg/m3 (36) 36.0
 
Nov. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 22.0 μg/m3 (20) 5.8 μg/m3 (24) 24.0
 
Nov. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 29.0 μg/m3 (26) 6.0 μg/m3 (25) 26.0
 
Nov. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 38.0 μg/m3 (35) 7.2 μg/m3 (30) 35.0
 
Nov. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 32.0 μg/m3 (29) 5.1 μg/m3 (21) 29.0
 
Nov. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 34.0 μg/m3 (31) 5.8 μg/m3 (24) 31.0
 
Nov. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 35.0 μg/m3 (32) 6.2 μg/m3 (26) 32.0
 
Nov. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 38.0 μg/m3 (35) 5.3 μg/m3 (22) 35.0
 
Nov. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 30.0 μg/m3 (27) 4.1 μg/m3 (17) 27.0
 
Nov. 16, 2019, 3 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) 3.8 μg/m3 (16) 23.0
 
Nov. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 13.0 μg/m3 (12) 7.1 μg/m3 (30) 30.0
 
Nov. 16, 2019, 1 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) 8.6 μg/m3 (36) 36.0
 
Nov. 16, 2019, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 12.0 μg/m3 (11) 3.6 μg/m3 (15) 18.0
 
Nov. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 10.0 μg/m3 (9) 3.1 μg/m3 (13) 18.0
 
Nov. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 12.0 μg/m3 (11) 3.6 μg/m3 (15) 18.0
 
Nov. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 17.0 μg/m3 (15) 5.7 μg/m3 (24) 24.0
 
Nov. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 21.0 μg/m3 (19) 6.9 μg/m3 (29) 29.0
 
Nov. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 18.0 μg/m3 (16) 5.8 μg/m3 (24) 24.0
 
Nov. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 18.0 μg/m3 (16) 6.2 μg/m3 (26) 26.0
 
Nov. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 24.0 μg/m3 (22) 5.5 μg/m3 (23) 23.0
 
Nov. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 24.0 μg/m3 (22) 5.8 μg/m3 (24) 24.0
 
Nov. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 36.0 μg/m3 (33) 6.5 μg/m3 (27) 33.0
 
Nov. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 61.0 μg/m3 (53) 8.6 μg/m3 (36) 53.0
 
Nov. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 68.0 μg/m3 (56) 7.4 μg/m3 (31) 56.0
 
Nov. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 47.0 μg/m3 (43) 7.6 μg/m3 (32) 43.0
 
Nov. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 55.0 μg/m3 (50) 6.9 μg/m3 (29) 50.0
 
Nov. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 51.0 μg/m3 (46) 7.2 μg/m3 (30) 46.0
 
Nov. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 34.0 μg/m3 (31) 8.6 μg/m3 (36) 36.0
 
Nov. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 32.0 μg/m3 (29) 4.6 μg/m3 (19) 29.0
 
Nov. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 25.0 μg/m3 (23) 3.6 μg/m3 (15) 23.0
 
Nov. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 24.0 μg/m3 (22) 4.8 μg/m3 (20) 22.0
 
Nov. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 27.0 μg/m3 (25) 8.2 μg/m3 (34) 34.0
 
Nov. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 27.0 μg/m3 (25) 4.3 μg/m3 (18) 25.0
 
Nov. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 14.0 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
Nov. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 15.0 μg/m3 (14) 9.1 μg/m3 (38) 38.0
 
Nov. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 17.0 μg/m3 (15) 13.0 μg/m3 (52) 52.0
 
Nov. 15, 2019, noon N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 15.0 μg/m3 (14) 7.6 μg/m3 (32) 32.0
 
Nov. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 13.0 μg/m3 (12) 6.6 μg/m3 (28) 28.0
 
Nov. 15, 2019, 10 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) 4.6 μg/m3 (19) 19.0
 
Nov. 15, 2019, 9 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) 6.9 μg/m3 (29) 29.0
 
Nov. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 12.0 μg/m3 (11) 9.6 μg/m3 (40) 40.0
 
Nov. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 16.0 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
Nov. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 17.0 μg/m3 (15) 8.4 μg/m3 (35) 35.0
 
Nov. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 9.0 μg/m3 (8) 5.3 μg/m3 (22) 22.0
 
Nov. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 25.0
 
Nov. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 13.0 μg/m3 (12) 8.4 μg/m3 (35) 35.0
 
Nov. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 21.0 μg/m3 (19) 7.4 μg/m3 (31) 31.0
 
Nov. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 48.0 μg/m3 (44) 9.6 μg/m3 (40) 44.0
 
Nov. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 42.0 μg/m3 (38) 14.5 μg/m3 (55) 55.0
 
Nov. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 27.0 μg/m3 (25) 7.1 μg/m3 (30) 30.0
 
Nov. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 38.0 μg/m3 (35) 5.5 μg/m3 (23) 35.0
 
Nov. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 11.0 μg/m3 (10) 7.2 μg/m3 (30) 30.0
 
Nov. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 14.0 μg/m3 (13) 5.1 μg/m3 (21) 29.0
 
Nov. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 11.0 μg/m3 (10) 6.9 μg/m3 (29) 29.0
 
Nov. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) N/A 14.0
 
Nov. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 10.0 μg/m3 (9) 4.8 μg/m3 (20) 22.0
 
Nov. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 17.0 μg/m3 (15) 4.3 μg/m3 (18) 19.0
 
Nov. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 13.0 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
Nov. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 19.0 μg/m3 (17) 10.6 μg/m3 (44) 44.0
 
Nov. 14, 2019, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 10.0 μg/m3 (9) 10.1 μg/m3 (42) 42.0
 
Nov. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 13.0 μg/m3 (12) 9.1 μg/m3 (38) 38.0
 
Nov. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 10.0 μg/m3 (9) 10.1 μg/m3 (42) 42.0
 
Nov. 14, 2019, 9 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) 8.1 μg/m3 (34) 34.0
 
Nov. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 11.0 μg/m3 (10) 13.0 μg/m3 (52) 52.0
 
Nov. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 13.0 μg/m3 (12) 9.6 μg/m3 (40) 40.0
 
Nov. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 11.0 μg/m3 (10) 6.2 μg/m3 (26) 26.0
 
Nov. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 12.0 μg/m3 (11) 7.4 μg/m3 (31) 31.0
 
Nov. 14, 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) 6.6 μg/m3 (28) 28.0
 
Nov. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 12.0 μg/m3 (11) 8.1 μg/m3 (34) 34.0
 
Nov. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 10.0 μg/m3 (9) 7.9 μg/m3 (33) 33.0
 
Nov. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 11.0 μg/m3 (10) 11.6 μg/m3 (48) 48.0
 
Nov. 14, 2019, midnight N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 9.0 μg/m3 (8) 10.6 μg/m3 (44) 44.0
 
Nov. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 7.0 μg/m3 (6) 3.1 μg/m3 (13) 19.0
 
Nov. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 9.0 μg/m3 (8) 4.8 μg/m3 (20) 22.0
 
Nov. 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 9.0 μg/m3 (8) 6.6 μg/m3 (28) 28.0
 
Nov. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 9.0 μg/m3 (8) 3.6 μg/m3 (15) 25.0
 
Nov. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 10.0 μg/m3 (9) 2.3 μg/m3 (10) 23.0
 
Nov. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 5.0 μg/m3 (5) 2.1 μg/m3 (9) 23.0
 
Nov. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 6.0 μg/m3 (5) 3.8 μg/m3 (16) 20.0
 
Nov. 13, 2019, 4 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) 3.6 μg/m3 (15) 15.0
 
Nov. 13, 2019, 3 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) 4.1 μg/m3 (17) 17.0
 
Nov. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
Nov. 13, 2019, 1 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) 5.5 μg/m3 (23) 23.0
 
Nov. 13, 2019, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 14.0 μg/m3 (13) 4.1 μg/m3 (17) 17.0
 
Nov. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 6.0 μg/m3 (5) 4.3 μg/m3 (18) 18.0
 
Nov. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 9.0 μg/m3 (8) 5.3 μg/m3 (22) 22.0
 
Nov. 13, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 12.0 μg/m3 (11) 3.6 μg/m3 (15) 17.0
 
Nov. 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 12.0 μg/m3 (11) 5.0 μg/m3 (21) 21.0
 
Nov. 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 11.0 μg/m3 (10) 5.0 μg/m3 (21) 21.0
 
Nov. 13, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 13.0 μg/m3 (12) 5.3 μg/m3 (22) 22.0
 
Nov. 13, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 14.0 μg/m3 (13) 4.8 μg/m3 (20) 20.0
 
Nov. 13, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 16.0 μg/m3 (15) 1.8 μg/m3 (8) 21.0
 
Nov. 13, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 17.0 μg/m3 (15) 0.4 μg/m3 (2) 22.0
 
Nov. 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 18.0 μg/m3 (16) 1.6 μg/m3 (7) 22.0
 
Nov. 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 15.0 μg/m3 (14) 2.3 μg/m3 (10) 22.0
 
Nov. 13, 2019, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 17.0 μg/m3 (15) 4.3 μg/m3 (18) 22.0
 
Nov. 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 16.0 μg/m3 (15) 5.5 μg/m3 (23) 23.0
 
Nov. 12, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 23.0 μg/m3 (21) 3.6 μg/m3 (15) 25.0
 
Nov. 12, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 18.0 μg/m3 (16) 2.3 μg/m3 (10) 26.0
 
Nov. 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 18.0 μg/m3 (16) 3.1 μg/m3 (13) 26.0
 
Nov. 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 23.0 μg/m3 (21) 5.8 μg/m3 (24) 25.0
 
Nov. 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 29.0 μg/m3 (26) 4.6 μg/m3 (19) 26.0
 
Nov. 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 15.0 μg/m3 (14) 4.1 μg/m3 (17) 25.0
 
Nov. 12, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 5.3 μg/m3 (22) 24.0
 
Nov. 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 7.0 μg/m3 (6) 5.5 μg/m3 (23) 23.0
 
Nov. 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 7.0 μg/m3 (6) 6.2 μg/m3 (26) 26.0
 
Nov. 12, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 11.0 μg/m3 (10) 6.5 μg/m3 (27) 27.0
 
Nov. 12, 2019, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 9.0 μg/m3 (8) 4.5 μg/m3 (19) 19.0
 
Nov. 12, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 6.0 μg/m3 (5) 3.6 μg/m3 (15) 15.0
 
Nov. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 6.0 μg/m3 (5) 6.2 μg/m3 (26) 26.0
 
Nov. 12, 2019, 9 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) 4.3 μg/m3 (18) 18.0
 
Nov. 12, 2019, 8 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) 4.5 μg/m3 (19) 19.0
 
Nov. 12, 2019, 7 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) 4.5 μg/m3 (19) 19.0
 
Nov. 12, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 10.0 μg/m3 (9) 3.3 μg/m3 (14) 15.0
 
Nov. 12, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 9.0 μg/m3 (8) 4.8 μg/m3 (20) 20.0
 
Nov. 12, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 11.0 μg/m3 (10) 6.2 μg/m3 (26) 26.0
 
Nov. 12, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 10.0 μg/m3 (9) 5.7 μg/m3 (24) 24.0
 
Nov. 12, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 12.0 μg/m3 (11) 4.5 μg/m3 (19) 19.0
 
Nov. 12, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 10.0 μg/m3 (9) 4.8 μg/m3 (20) 20.0
 
Nov. 12, 2019, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 18.0 μg/m3 (16) 5.3 μg/m3 (22) 22.0
 
Nov. 11, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 5.5 μg/m3 (23) 24.0
 
Nov. 11, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 11.0 μg/m3 (10) -1.5 μg/m3 (0) 25.0
 
Nov. 11, 2019, 9 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) -0.5 μg/m3 (0) 25.0
 
Nov. 11, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 27.0 μg/m3 (25) 3.1 μg/m3 (13) 25.0
 
Nov. 11, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 33.0 μg/m3 (30) 5.0 μg/m3 (21) 30.0
 
Nov. 11, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 25.0 μg/m3 (23) 4.8 μg/m3 (20) 25.0
 
Nov. 11, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 23.0 μg/m3 (21) 2.3 μg/m3 (10) 24.0
 
Nov. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 6.0 μg/m3 (5) 0.0 μg/m3 (0) 24.0
 
Nov. 11, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 30.0 μg/m3 (27) 1.6 μg/m3 (7) 27.0
 
Nov. 11, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 23.0 μg/m3 (21) 3.3 μg/m3 (14) 22.0
 
Nov. 11, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 20.0 μg/m3 (18) 2.6 μg/m3 (11) 21.0
 
Nov. 11, 2019, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 7.0 μg/m3 (6) 2.1 μg/m3 (9) 22.0
 
Nov. 11, 2019, 11 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) 3.3 μg/m3 (14) 22.0
 
Nov. 11, 2019, 10 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) 0.0 μg/m3 (0) 22.0
 
Nov. 11, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 10.0 μg/m3 (9) 3.1 μg/m3 (13) 22.0
 
Nov. 11, 2019, 8 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) 7.6 μg/m3 (32) 32.0
 
Nov. 11, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 22.0 μg/m3 (20) 3.8 μg/m3 (16) 24.0
 
Nov. 11, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 27.0 μg/m3 (25) 2.3 μg/m3 (10) 25.0
 
Nov. 11, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 13.0 μg/m3 (12) 2.3 μg/m3 (10) 25.0
 
Nov. 11, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 17.0 μg/m3 (15) 3.3 μg/m3 (14) 25.0
 
Nov. 11, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 34.0 μg/m3 (31) 4.1 μg/m3 (17) 31.0
 
Nov. 11, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 28.0 μg/m3 (25) 0.4 μg/m3 (2) 25.0
 
Nov. 11, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 7.0 μg/m3 (6) 2.6 μg/m3 (11) 22.0
 
Nov. 11, 2019, midnight N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 25.0
 
Nov. 10, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 30.0 μg/m3 (27) 7.4 μg/m3 (31) 31.0
 
Nov. 10, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 17.0 μg/m3 (15) 5.5 μg/m3 (23) 23.0
 
Nov. 10, 2019, 9 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) 5.0 μg/m3 (21) 21.0
 
Nov. 10, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 28.0 μg/m3 (25) 2.8 μg/m3 (12) 25.0
 
Nov. 10, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 23.0
 
Nov. 10, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 9.0 μg/m3 (8) 6.2 μg/m3 (26) 26.0
 
Nov. 10, 2019, 5 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) 4.1 μg/m3 (17) 19.0
 
Nov. 10, 2019, 4 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) 3.1 μg/m3 (13) 20.0
 
Nov. 10, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 7.0 μg/m3 (6) 5.8 μg/m3 (24) 24.0
 
Nov. 10, 2019, 2 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) 10.1 μg/m3 (42) 42.0
 
Nov. 10, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 7.0 μg/m3 (6) 8.1 μg/m3 (34) 34.0
 
Nov. 10, 2019, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 8.0 μg/m3 (7) 6.5 μg/m3 (27) 27.0
 
Nov. 10, 2019, 11 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) 5.0 μg/m3 (21) 21.0
 
Nov. 10, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 11.0 μg/m3 (10) 5.7 μg/m3 (24) 24.0
 
Nov. 10, 2019, 9 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) 8.9 μg/m3 (37) 37.0
 
Nov. 10, 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) 7.4 μg/m3 (31) 31.0
 
Nov. 10, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 14.0 μg/m3 (13) 7.4 μg/m3 (31) 31.0
 
Nov. 10, 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) 4.6 μg/m3 (19) 19.0
 
Nov. 10, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 13.0 μg/m3 (12) 4.8 μg/m3 (20) 20.0
 
Nov. 10, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 12.0 μg/m3 (11) 6.6 μg/m3 (28) 28.0
 
Nov. 10, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 24.0 μg/m3 (22) 8.1 μg/m3 (34) 34.0
 
Nov. 10, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 43.0 μg/m3 (39) 11.6 μg/m3 (48) 48.0
 
Nov. 10, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 50.0 μg/m3 (45) 6.4 μg/m3 (27) 45.0