AQSQID: 460110003

Site Name: Research Farm

Location: Brookings Co, SD

Reporting: True, Located: True

Current AQI: 24.0

Brookings Co SD, US: 44.348604, -96.807299

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Nov. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 5.7 μg/m3 (24) 24.0
 
Nov. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 6.2 μg/m3 (26) 26.0
 
Nov. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 25.0
 
Nov. 17, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 12.0
 
Nov. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 1.8 μg/m3 (8) 8.0
 
Nov. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 4.5 μg/m3 (19) 19.0
 
Nov. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Nov. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Nov. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 3.5 μg/m3 (15) 15.0
 
Nov. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Nov. 17, 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) 2.2 μg/m3 (9) 9.0
 
Nov. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 2.0 μg/m3 (8) 12.0
 
Nov. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 1.0 μg/m3 (4) 11.0
 
Nov. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 4.5 μg/m3 (19) 19.0
 
Nov. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 7.1 μg/m3 (30) 30.0
 
Nov. 17, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 65.0 μg/m3 (55) 5.9 μg/m3 (25) 55.0
 
Nov. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 6.9 μg/m3 (29) 29.0
 
Nov. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 39.0 μg/m3 (35) 6.4 μg/m3 (27) 35.0
 
Nov. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (29) 8.8 μg/m3 (37) 37.0
 
Nov. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 42.0 μg/m3 (38) 5.0 μg/m3 (21) 38.0
 
Nov. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 3.7 μg/m3 (15) 15.0
 
Nov. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 2.0 μg/m3 (8) 20.0
 
Nov. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 4.0 μg/m3 (17) 19.0
 
Nov. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 4.0 μg/m3 (17) 17.0
 
Nov. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 4.0 μg/m3 (17) 17.0
 
Nov. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 2.5 μg/m3 (10) 15.0
 
Nov. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 3.7 μg/m3 (15) 15.0
 
Nov. 16, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 3.3 μg/m3 (14) 14.0
 
Nov. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 3.7 μg/m3 (15) 15.0
 
Nov. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 4.0 μg/m3 (17) 17.0
 
Nov. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 4.2 μg/m3 (18) 18.0
 
Nov. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 3.0 μg/m3 (12) 20.0
 
Nov. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (23) 2.8 μg/m3 (12) 23.0
 
Nov. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 4.0 μg/m3 (17) 25.0
 
Nov. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (31) 5.4 μg/m3 (23) 31.0
 
Nov. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 36.0 μg/m3 (33) 4.5 μg/m3 (19) 33.0
 
Nov. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 4.5 μg/m3 (19) 24.0
 
Nov. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 5.7 μg/m3 (24) 24.0
 
Nov. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 6.9 μg/m3 (29) 29.0
 
Nov. 16, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 9.8 μg/m3 (41) 41.0
 
Nov. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 7.2 μg/m3 (30) 30.0
 
Nov. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 4.7 μg/m3 (20) 20.0
 
Nov. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 5.9 μg/m3 (25) 25.0
 
Nov. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
Nov. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 5.9 μg/m3 (25) 25.0
 
Nov. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
Nov. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 6.4 μg/m3 (27) 27.0
 
Nov. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 4.7 μg/m3 (20) 20.0
 
Nov. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 8.3 μg/m3 (35) 35.0
 
Nov. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 7.9 μg/m3 (33) 33.0
 
Nov. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 1.8 μg/m3 (8) 8.0
 
Nov. 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 0.8 μg/m3 (3) 6.0
 
Nov. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) -0.1 μg/m3 (0) 3.0
 
Nov. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 0.1 μg/m3 (0) 4.0
 
Nov. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -0.3 μg/m3 (0) 5.0
 
Nov. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) -0.3 μg/m3 (0) 5.0
 
Nov. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) -1.3 μg/m3 (0) 5.0
 
Nov. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
Nov. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 3.0 μg/m3 (12) 12.0
 
Nov. 15, 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) 2.5 μg/m3 (10) 10.0
 
Nov. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) -1.5 μg/m3 (0) 2.0
 
Nov. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -1.3 μg/m3 (0) 5.0
 
Nov. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 8.0
 
Nov. 15, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 3.5 μg/m3 (15) 15.0
 
Nov. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 3.5 μg/m3 (15) 15.0
 
Nov. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 5.2 μg/m3 (22) 22.0
 
Nov. 14, 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) 6.2 μg/m3 (26) 26.0
 
Nov. 14, 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) 3.3 μg/m3 (14) 14.0
 
Nov. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 4.0 μg/m3 (17) 21.0
 
Nov. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 7.4 μg/m3 (31) 31.0
 
Nov. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 9.1 μg/m3 (38) 38.0
 
Nov. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 4.5 μg/m3 (19) 20.0
 
Nov. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 5.4 μg/m3 (23) 23.0
 
Nov. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 6.2 μg/m3 (26) 26.0
 
Nov. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 9.3 μg/m3 (39) 39.0
 
Nov. 14, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 6.7 μg/m3 (28) 28.0
 
Nov. 14, 2019, 11 a.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
 
Nov. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 7.8 μg/m3 (32) 32.0
 
Nov. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 6.7 μg/m3 (28) 28.0
 
Nov. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 8.1 μg/m3 (34) 34.0
 
Nov. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
Nov. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 7.1 μg/m3 (30) 30.0
 
Nov. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (26) 5.2 μg/m3 (22) 26.0
 
Nov. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (22) 6.2 μg/m3 (26) 26.0
 
Nov. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 4.0 μg/m3 (17) 20.0
 
Nov. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 2.8 μg/m3 (12) 25.0
 
Nov. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 3.2 μg/m3 (13) 21.0
 
Nov. 14, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 4.7 μg/m3 (20) 24.0
 
Nov. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 5.7 μg/m3 (24) 24.0
 
Nov. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 7.4 μg/m3 (31) 31.0
 
Nov. 13, 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) 8.1 μg/m3 (34) 34.0
 
Nov. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
Nov. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 3.2 μg/m3 (13) 13.0
 
Nov. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 1.5 μg/m3 (6) 21.0
 
Nov. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 46.0 μg/m3 (42) 1.3 μg/m3 (5) 42.0
 
Nov. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.5 μg/m3 (19) 19.0
 
Nov. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (31) N/A 31.0
 
Nov. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 6.6 μg/m3 (28) 28.0
 
Nov. 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 21.0 μg/m3 (19) 1.3 μg/m3 (5) 19.0
 
Nov. 13, 2019, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 18.0 μg/m3 (16) 0.1 μg/m3 (0) 16.0
 
Nov. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 18.0 μg/m3 (16) -1.5 μg/m3 (0) 16.0
 
Nov. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 15.0 μg/m3 (14) -0.1 μg/m3 (0) 14.0
 
Nov. 13, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 10.0 μg/m3 (9) 3.2 μg/m3 (13) 13.0
 
Nov. 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 18.0 μg/m3 (16) 3.0 μg/m3 (12) 16.0
 
Nov. 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 11.0 μg/m3 (10) 2.0 μg/m3 (8) 10.0
 
Nov. 13, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 14.0 μg/m3 (13) 2.5 μg/m3 (10) 13.0
 
Nov. 13, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 18.0 μg/m3 (16) 2.7 μg/m3 (11) 16.0
 
Nov. 13, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 24.0 μg/m3 (22) 3.7 μg/m3 (15) 22.0
 
Nov. 13, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 21.0 μg/m3 (19) 1.0 μg/m3 (4) 19.0
 
Nov. 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 17.0 μg/m3 (15) -1.8 μg/m3 (0) 15.0
 
Nov. 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 23.0 μg/m3 (21) -0.1 μg/m3 (0) 21.0
 
Nov. 13, 2019, midnight N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 24.0 μg/m3 (22) 1.5 μg/m3 (6) 22.0
 
Nov. 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 33.0 μg/m3 (30) 2.0 μg/m3 (8) 30.0
 
Nov. 12, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 38.0 μg/m3 (35) 1.5 μg/m3 (6) 35.0
 
Nov. 12, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 32.0 μg/m3 (29) 0.5 μg/m3 (2) 29.0
 
Nov. 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 26.0 μg/m3 (24) 2.2 μg/m3 (9) 24.0
 
Nov. 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 22.0 μg/m3 (20) 2.5 μg/m3 (10) 20.0
 
Nov. 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 17.0 μg/m3 (15) 4.2 μg/m3 (18) 18.0
 
Nov. 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 20.0 μg/m3 (18) 4.9 μg/m3 (20) 20.0
 
Nov. 12, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 10.0 μg/m3 (9) 4.7 μg/m3 (20) 20.0
 
Nov. 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 10.0 μg/m3 (9) 5.2 μg/m3 (22) 22.0
 
Nov. 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 8.0 μg/m3 (7) 6.9 μg/m3 (29) 29.0
 
Nov. 12, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Nov. 12, 2019, noon N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 9.0 μg/m3 (8) 3.2 μg/m3 (13) 13.0
 
Nov. 12, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 7.0 μg/m3 (6) 2.3 μg/m3 (10) 10.0
 
Nov. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 8.0 μg/m3 (7) -0.6 μg/m3 (0) 7.0
 
Nov. 12, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 11.0 μg/m3 (10) 2.5 μg/m3 (10) 10.0
 
Nov. 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 30.0 μg/m3 (27) 4.4 μg/m3 (18) 27.0
 
Nov. 12, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 9.0 μg/m3 (8) 3.2 μg/m3 (13) 13.0
 
Nov. 12, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 8.0
 
Nov. 12, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 8.0 μg/m3 (7) 2.3 μg/m3 (10) 10.0
 
Nov. 12, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 18.0 μg/m3 (16) 3.7 μg/m3 (15) 16.0
 
Nov. 12, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 16.0 μg/m3 (15) 2.5 μg/m3 (10) 15.0
 
Nov. 12, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 14.0 μg/m3 (13) 2.0 μg/m3 (8) 13.0
 
Nov. 12, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 9.0 μg/m3 (8) 2.5 μg/m3 (10) 10.0
 
Nov. 12, 2019, midnight N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 23.0 μg/m3 (21) 1.8 μg/m3 (8) 21.0
 
Nov. 11, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 39.0 μg/m3 (35) 0.6 μg/m3 (2) 35.0
 
Nov. 11, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 33.0 μg/m3 (30) -1.1 μg/m3 (0) 30.0
 
Nov. 11, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 18.0 μg/m3 (16) 1.0 μg/m3 (4) 16.0
 
Nov. 11, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 19.0 μg/m3 (17) -0.9 μg/m3 (0) 17.0
 
Nov. 11, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 12.0 μg/m3 (11) -1.4 μg/m3 (0) 11.0
 
Nov. 11, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 21.0 μg/m3 (19) -0.6 μg/m3 (0) 19.0
 
Nov. 11, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 46.0 μg/m3 (42) 0.3 μg/m3 (1) 42.0
 
Nov. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 36.0 μg/m3 (33) 2.5 μg/m3 (10) 33.0
 
Nov. 11, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 19.0 μg/m3 (17) 2.3 μg/m3 (10) 17.0
 
Nov. 11, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 12.0 μg/m3 (11) 2.5 μg/m3 (10) 11.0
 
Nov. 11, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 33.0 μg/m3 (30) 2.2 μg/m3 (9) 30.0
 
Nov. 11, 2019, noon N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 26.0 μg/m3 (24) 1.5 μg/m3 (6) 24.0
 
Nov. 11, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 3.0 μg/m3 (3) 2.5 μg/m3 (10) 10.0
 
Nov. 11, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 2.0 μg/m3 (2) 5.0 μg/m3 (21) 21.0
 
Nov. 11, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 4.0 μg/m3 (4) 5.2 μg/m3 (22) 22.0
 
Nov. 11, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 5.0 μg/m3 (5) 0.3 μg/m3 (1) 8.0
 
Nov. 11, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 8.0
 
Nov. 11, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 3.0 μg/m3 (3) 0.3 μg/m3 (1) 5.0
 
Nov. 11, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 5.0
 
Nov. 11, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 3.0 μg/m3 (3) -0.1 μg/m3 (0) 5.0
 
Nov. 11, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 9.0 μg/m3 (8) -0.1 μg/m3 (0) 8.0
 
Nov. 11, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 9.0 μg/m3 (8) 0.5 μg/m3 (2) 8.0
 
Nov. 11, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 8.0 μg/m3 (7) 0.3 μg/m3 (1) 7.0
 
Nov. 11, 2019, midnight N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 9.0 μg/m3 (8) 1.3 μg/m3 (5) 8.0
 
Nov. 10, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 58.0 μg/m3 (52) 2.0 μg/m3 (8) 52.0
 
Nov. 10, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 21.0 μg/m3 (19) 2.0 μg/m3 (8) 19.0
 
Nov. 10, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 11.0 μg/m3 (10) -1.3 μg/m3 (0) 10.0
 
Nov. 10, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 17.0 μg/m3 (15) -1.3 μg/m3 (0) 15.0
 
Nov. 10, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 16.0 μg/m3 (15) 2.5 μg/m3 (10) 15.0
 
Nov. 10, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 13.0 μg/m3 (12) 2.5 μg/m3 (10) 12.0
 
Nov. 10, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 27.0 μg/m3 (25) 2.8 μg/m3 (12) 25.0
 
Nov. 10, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 8.0 μg/m3 (7) 3.7 μg/m3 (15) 15.0