AQSQID: 460110003

Site Name: Research Farm

Location: Brookings Co, SD

Reporting: True, Located: True

Current AQI: 27.0

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
Jan. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 0.0 μg/m3 (0) 0.6 μg/m3 (2) 27.0
 
Jan. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 11.0 μg/m3 (10) 2.6 μg/m3 (11) 27.0
 
Jan. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 8.0 μg/m3 (7) 5.5 μg/m3 (23) 28.0
 
Jan. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 6.0 μg/m3 (5) 1.6 μg/m3 (7) 28.0
 
Jan. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 16.0 μg/m3 (15) 2.3 μg/m3 (10) 28.0
 
Jan. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 16.0 μg/m3 (15) 1.9 μg/m3 (8) 28.0
 
Jan. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 12.0 μg/m3 (11) 0.6 μg/m3 (2) 28.0
 
Jan. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 10.0 μg/m3 (9) 0.6 μg/m3 (2) 28.0
 
Jan. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 5.0 μg/m3 (5) 1.4 μg/m3 (6) 28.0
 
Jan. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 26.0
 
Jan. 17, 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) 2.6 μg/m3 (11) 24.0
 
Jan. 17, 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) 3.9 μg/m3 (16) 22.0
 
Jan. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 14.0 μg/m3 (13) -1.9 μg/m3 (0) 22.0
 
Jan. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 20.0 μg/m3 (18) -3.1 μg/m3 (0) 22.0
 
Jan. 17, 2019, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 12.0 μg/m3 (11) 1.2 μg/m3 (5) 21.0
 
Jan. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 12.0 μg/m3 (11) 3.9 μg/m3 (16) 20.0
 
Jan. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 10.0 μg/m3 (9) 4.6 μg/m3 (19) 20.0
 
Jan. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 21.0
 
Jan. 17, 2019, 8 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) 3.1 μg/m3 (13) 21.0
 
Jan. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A -2.0 μg/m3 (0) 1.1 μg/m3 (5) 22.0
 
Jan. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 0.9 μg/m3 (4) 22.0
 
Jan. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 10.0 μg/m3 (9) 3.4 μg/m3 (14) 22.0
 
Jan. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 20.0 μg/m3 (18) 6.5 μg/m3 (27) 27.0
 
Jan. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 36.0 μg/m3 (33) 5.8 μg/m3 (24) 33.0
 
Jan. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 38.0 μg/m3 (35) 1.4 μg/m3 (6) 35.0
 
Jan. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 21.0 μg/m3 (19) 0.7 μg/m3 (3) 25.0
 
Jan. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 27.0 μg/m3 (25) 1.1 μg/m3 (5) 26.0
 
Jan. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 26.0 μg/m3 (24) 0.6 μg/m3 (2) 27.0
 
Jan. 16, 2019, 10 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) -1.0 μg/m3 (0) 28.0
 
Jan. 16, 2019, 9 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) 0.4 μg/m3 (2) 29.0
 
Jan. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 19.0 μg/m3 (17) 3.3 μg/m3 (14) 29.0
 
Jan. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 5.0 μg/m3 (5) 5.3 μg/m3 (22) 29.0
 
Jan. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 11.0 μg/m3 (10) 3.9 μg/m3 (16) 29.0
 
Jan. 16, 2019, 5 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) -4.8 μg/m3 (0) 29.0
 
Jan. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 3.6 μg/m3 (15) 15.0
 
Jan. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) 1.7 μg/m3 (7) 28.0
 
Jan. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 0.0 μg/m3 (0) 0.0 μg/m3 (0) 28.0
 
Jan. 16, 2019, noon N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 0.0 μg/m3 (0) -0.4 μg/m3 (0) 28.0
 
Jan. 16, 2019, 11 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) 0.0 μg/m3 (0) 28.0
 
Jan. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 10.0 μg/m3 (9) 1.4 μg/m3 (6) 28.0
 
Jan. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 4.0 μg/m3 (4) 4.9 μg/m3 (20) 28.0
 
Jan. 16, 2019, 8 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) 7.5 μg/m3 (31) 31.0
 
Jan. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 15.0 μg/m3 (14) 2.9 μg/m3 (12) 28.0
 
Jan. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 31.0 μg/m3 (28) 0.7 μg/m3 (3) 28.0
 
Jan. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 33.0 μg/m3 (30) 5.0 μg/m3 (21) 30.0
 
Jan. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 20.0 μg/m3 (18) 5.0 μg/m3 (21) 22.0
 
Jan. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 20.0 μg/m3 (18) 6.5 μg/m3 (27) 27.0
 
Jan. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 23.0 μg/m3 (21) 11.1 μg/m3 (46) 46.0
 
Jan. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 17.0 μg/m3 (15) 9.6 μg/m3 (40) 40.0
 
Jan. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 18.0 μg/m3 (16) 6.9 μg/m3 (29) 29.0
 
Jan. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 16.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
Jan. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 6.0 μg/m3 (5) 8.9 μg/m3 (37) 37.0
 
Jan. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 9.0 μg/m3 (8) 9.2 μg/m3 (38) 38.0
 
Jan. 15, 2019, 8 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) 6.7 μg/m3 (28) 28.0
 
Jan. 15, 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) 2.1 μg/m3 (9) 17.0
 
Jan. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 4.0 μg/m3 (4) 1.8 μg/m3 (8) 16.0
 
Jan. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 2.0 μg/m3 (2) 0.9 μg/m3 (4) 16.0
 
Jan. 15, 2019, 4 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) 2.6 μg/m3 (11) 16.0
 
Jan. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 2.0 μg/m3 (2) 2.6 μg/m3 (11) 17.0
 
Jan. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 2.6 μg/m3 (11) 17.0
 
Jan. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 4.0 μg/m3 (17) 18.0
 
Jan. 15, 2019, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A -3.0 μg/m3 (0) 4.1 μg/m3 (17) 18.0
 
Jan. 15, 2019, 11 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) 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 1.0 μg/m3 (1) 2.3 μg/m3 (10) 18.0
 
Jan. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 3.0 μg/m3 (3) 1.4 μg/m3 (6) 17.0
 
Jan. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 8.0 μg/m3 (7) 1.4 μg/m3 (6) 18.0
 
Jan. 15, 2019, 7 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) 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2019, 6 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) 6.3 μg/m3 (26) 26.0
 
Jan. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 2.0 μg/m3 (2) 2.6 μg/m3 (11) 18.0
 
Jan. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 21.0 μg/m3 (19) 4.6 μg/m3 (19) 19.0
 
Jan. 15, 2019, 3 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) 7.7 μg/m3 (32) 32.0
 
Jan. 15, 2019, 2 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) 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2019, 1 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) 8.1 μg/m3 (34) 34.0
 
Jan. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 11.0 μg/m3 (10) 11.1 μg/m3 (46) 46.0
 
Jan. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 11.0 μg/m3 (10) 5.3 μg/m3 (22) 22.0
 
Jan. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 14.0 μg/m3 (13) 2.8 μg/m3 (12) 17.0
 
Jan. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 9.0 μg/m3 (8) 2.8 μg/m3 (12) 17.0
 
Jan. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 14.0 μg/m3 (13) 1.3 μg/m3 (5) 17.0
 
Jan. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 7.0 μg/m3 (6) 3.1 μg/m3 (13) 18.0
 
Jan. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 7.0 μg/m3 (6) 3.8 μg/m3 (16) 18.0
 
Jan. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 7.0 μg/m3 (6) 2.1 μg/m3 (9) 17.0
 
Jan. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A -2.0 μg/m3 (0) 3.8 μg/m3 (16) 17.0
 
Jan. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A -3.0 μg/m3 (0) 3.6 μg/m3 (15) 16.0
 
Jan. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 10.0 μg/m3 (9) 4.0 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 15.0 μg/m3 (14) 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 5.0 μg/m3 (5) 5.3 μg/m3 (22) 22.0
 
Jan. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 24.0 μg/m3 (22) 4.8 μg/m3 (20) 22.0
 
Jan. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 24.0 μg/m3 (22) 6.9 μg/m3 (29) 29.0
 
Jan. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 18.0 μg/m3 (16) 7.2 μg/m3 (30) 30.0
 
Jan. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 14.0 μg/m3 (13) 4.0 μg/m3 (17) 22.0
 
Jan. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 6.0 μg/m3 (5) 5.5 μg/m3 (23) 24.0
 
Jan. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 1.0 μg/m3 (1) 6.7 μg/m3 (28) 28.0
 
Jan. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.3 μg/m3 (18) 27.0
 
Jan. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A -3.0 μg/m3 (0) 3.1 μg/m3 (13) 28.0
 
Jan. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 0.0 μg/m3 (0) 4.0 μg/m3 (17) 30.0
 
Jan. 14, 2019, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 3.1 μg/m3 (13) 30.0
 
Jan. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 12.0 μg/m3 (11) 4.8 μg/m3 (20) 31.0
 
Jan. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 25.0 μg/m3 (23) 5.5 μg/m3 (23) 31.0
 
Jan. 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 16.0 μg/m3 (15) 5.5 μg/m3 (23) 31.0
 
Jan. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 13.0 μg/m3 (12) 8.6 μg/m3 (36) 36.0
 
Jan. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 23.0 μg/m3 (21) 7.4 μg/m3 (31) 32.0
 
Jan. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 40.0 μg/m3 (36) 14.1 μg/m3 (54) 54.0
 
Jan. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 37.0 μg/m3 (34) 18.1 μg/m3 (63) 63.0
 
Jan. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 60.0 μg/m3 (52) 21.5 μg/m3 (70) 70.0
 
Jan. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 58.0 μg/m3 (52) 22.4 μg/m3 (72) 72.0
 
Jan. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 50.0 μg/m3 (45) 21.9 μg/m3 (71) 71.0
 
Jan. 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 37.0 μg/m3 (34) 17.6 μg/m3 (62) 62.0
 
Jan. 13, 2019, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 29.0 μg/m3 (26) 17.6 μg/m3 (62) 62.0
 
Jan. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 34.0 μg/m3 (31) 14.9 μg/m3 (56) 56.0
 
Jan. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 35.0 μg/m3 (32) 10.6 μg/m3 (44) 44.0
 
Jan. 13, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 29.0 μg/m3 (26) 18.3 μg/m3 (63) 63.0
 
Jan. 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 41.0 μg/m3 (37) 17.4 μg/m3 (61) 61.0
 
Jan. 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 43.0 μg/m3 (39) 19.2 μg/m3 (65) 65.0
 
Jan. 13, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 46.0 μg/m3 (42) 20.7 μg/m3 (69) 69.0
 
Jan. 13, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 39.0 μg/m3 (35) 13.4 μg/m3 (53) 53.0
 
Jan. 13, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 36.0 μg/m3 (33) 20.0 μg/m3 (67) 67.0
 
Jan. 13, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 37.0 μg/m3 (34) 19.8 μg/m3 (67) 67.0
 
Jan. 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 35.0 μg/m3 (32) 13.4 μg/m3 (53) 53.0
 
Jan. 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 27.0 μg/m3 (25) 17.6 μg/m3 (62) 62.0
 
Jan. 13, 2019, midnight N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 46.0 μg/m3 (42) 15.9 μg/m3 (58) 58.0
 
Jan. 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 45.0 μg/m3 (41) 18.8 μg/m3 (64) 64.0
 
Jan. 12, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 31.0 μg/m3 (28) 19.0 μg/m3 (65) 65.0
 
Jan. 12, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 33.0 μg/m3 (30) 19.5 μg/m3 (66) 66.0
 
Jan. 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 47.0 μg/m3 (43) 19.5 μg/m3 (66) 66.0
 
Jan. 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 39.0 μg/m3 (35) 18.6 μg/m3 (64) 64.0
 
Jan. 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 28.0 μg/m3 (25) 16.9 μg/m3 (60) 60.0
 
Jan. 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 24.0 μg/m3 (22) 16.7 μg/m3 (60) 60.0
 
Jan. 12, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 30.0 μg/m3 (27) 13.9 μg/m3 (54) 54.0
 
Jan. 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 31.0 μg/m3 (28) 18.5 μg/m3 (64) 64.0
 
Jan. 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 30.0 μg/m3 (27) 16.9 μg/m3 (60) 60.0
 
Jan. 12, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 35.0 μg/m3 (32) 16.1 μg/m3 (59) 59.0
 
Jan. 12, 2019, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 32.0 μg/m3 (29) 17.1 μg/m3 (61) 61.0
 
Jan. 12, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 26.0 μg/m3 (24) 9.6 μg/m3 (40) 40.0
 
Jan. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 17.0 μg/m3 (15) 12.6 μg/m3 (51) 51.0
 
Jan. 12, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 23.0 μg/m3 (21) 17.2 μg/m3 (61) 61.0
 
Jan. 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 25.0 μg/m3 (23) 20.3 μg/m3 (68) 68.0
 
Jan. 12, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 29.0 μg/m3 (26) 20.8 μg/m3 (69) 69.0
 
Jan. 12, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 33.0 μg/m3 (30) 21.7 μg/m3 (71) 71.0
 
Jan. 12, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 23.0 μg/m3 (21) 21.2 μg/m3 (70) 70.0
 
Jan. 12, 2019, 4 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) 12.1 μg/m3 (50) 50.0
 
Jan. 12, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 27.0 μg/m3 (25) 10.1 μg/m3 (42) 42.0
 
Jan. 12, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 20.0 μg/m3 (18) 11.4 μg/m3 (48) 48.0
 
Jan. 12, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 30.0 μg/m3 (27) 10.9 μg/m3 (45) 45.0
 
Jan. 12, 2019, midnight N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 40.0 μg/m3 (36) 11.1 μg/m3 (46) 46.0
 
Jan. 11, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 36.0 μg/m3 (33) 13.4 μg/m3 (53) 53.0
 
Jan. 11, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 29.0 μg/m3 (26) 13.6 μg/m3 (53) 53.0
 
Jan. 11, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 31.0 μg/m3 (28) 7.4 μg/m3 (31) 31.0
 
Jan. 11, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 32.0 μg/m3 (29) 6.7 μg/m3 (28) 29.0
 
Jan. 11, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 28.0 μg/m3 (25) 9.6 μg/m3 (40) 40.0
 
Jan. 11, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 29.0 μg/m3 (26) 7.9 μg/m3 (33) 33.0
 
Jan. 11, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 21.0 μg/m3 (19) 6.7 μg/m3 (28) 28.0
 
Jan. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 16.0 μg/m3 (15) 8.9 μg/m3 (37) 37.0
 
Jan. 11, 2019, 3 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) 8.9 μg/m3 (37) 37.0
 
Jan. 11, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 21.0 μg/m3 (19) 7.7 μg/m3 (32) 32.0
 
Jan. 11, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 21.0 μg/m3 (19) 6.2 μg/m3 (26) 26.0
 
Jan. 11, 2019, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 17.0 μg/m3 (15) 5.3 μg/m3 (22) 22.0
 
Jan. 11, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 21.0 μg/m3 (19) 5.5 μg/m3 (23) 23.0
 
Jan. 11, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 35.0 μg/m3 (32) 8.9 μg/m3 (37) 37.0
 
Jan. 11, 2019, 9 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) 12.4 μg/m3 (51) 51.0
 
Jan. 11, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 11.0 μg/m3 (10) 6.9 μg/m3 (29) 29.0
 
Jan. 11, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 18.0 μg/m3 (16) 7.6 μg/m3 (32) 32.0
 
Jan. 11, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 30.0 μg/m3 (27) 5.3 μg/m3 (22) 27.0
 
Jan. 11, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 33.0 μg/m3 (30) 7.2 μg/m3 (30) 30.0
 
Jan. 11, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 23.0 μg/m3 (21) 5.7 μg/m3 (24) 24.0
 
Jan. 11, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 23.0 μg/m3 (21) 4.8 μg/m3 (20) 21.0
 
Jan. 11, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 22.0 μg/m3 (20) 4.1 μg/m3 (17) 20.0