AQSQID: 460110003

Site Name: Research Farm

Location: Brookings Co, SD

Reporting: True, Located: True

Current AQI: 47.0

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
Sept. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A 29.0 μg/m3 (26) 9.9 μg/m3 (41) 47.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 31.0 μg/m3 (28) 15.4 μg/m3 (57) 57.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 34.0 μg/m3 (31) 14.4 μg/m3 (55) 55.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A 26.0 μg/m3 (24) 11.2 μg/m3 (47) 47.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 32.0 μg/m3 (29) 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 38.0 μg/m3 (35) 15.9 μg/m3 (58) 58.0
 
Sept. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 37.0 μg/m3 (34) 8.0 μg/m3 (33) 41.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 35.0 μg/m3 (32) 14.9 μg/m3 (56) 56.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 34.0 μg/m3 (31) 7.3 μg/m3 (30) 42.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 34.0 μg/m3 (31) 6.8 μg/m3 (28) 42.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 38.0 μg/m3 (35) 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 25.0 μg/m3 (23) 6.8 μg/m3 (28) 41.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 24.0 μg/m3 (22) 10.2 μg/m3 (42) 42.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 21.0 μg/m3 (19) 5.8 μg/m3 (24) 33.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 18.0 μg/m3 (16) 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2019, 2 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) 6.1 μg/m3 (25) 28.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 15.0 μg/m3 (14) 6.3 μg/m3 (26) 28.0
 
Sept. 16, 2019, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 12.0 μg/m3 (11) 9.7 μg/m3 (40) 40.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 12.0 μg/m3 (11) 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 7.0 μg/m3 (6) 6.6 μg/m3 (28) 28.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 7.0 μg/m3 (6) 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 8.0 μg/m3 (7) 12.2 μg/m3 (50) 50.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 9.0 μg/m3 (8) 5.8 μg/m3 (24) 28.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 6.0 μg/m3 (5) 7.6 μg/m3 (32) 32.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 9.0 μg/m3 (8) 0.0 μg/m3 (0) 28.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 10.0 μg/m3 (9) 1.2 μg/m3 (5) 27.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 9.0 μg/m3 (8) 1.9 μg/m3 (8) 28.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 10.0 μg/m3 (9) 2.4 μg/m3 (10) 31.0
 
Sept. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 10.0 μg/m3 (9) 4.4 μg/m3 (18) 33.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 9.0 μg/m3 (8) 6.6 μg/m3 (28) 35.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 11.0 μg/m3 (10) 4.9 μg/m3 (20) 39.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 10.0 μg/m3 (9) 4.6 μg/m3 (19) 43.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 11.0 μg/m3 (10) 0.7 μg/m3 (3) 39.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 11.0 μg/m3 (10) 0.2 μg/m3 (1) 39.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 7.0 μg/m3 (6) 0.9 μg/m3 (4) 37.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 35.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 6.0 μg/m3 (5) 3.6 μg/m3 (15) 29.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 3.0 μg/m3 (3) 4.8 μg/m3 (20) 28.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 3.0 μg/m3 (3) 4.8 μg/m3 (20) 25.0
 
Sept. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 2.0 μg/m3 (2) 8.0 μg/m3 (33) 33.0
 
Sept. 15, 2019, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 4.0 μg/m3 (4) 5.5 μg/m3 (23) 23.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 5.0 μg/m3 (5) 3.8 μg/m3 (16) 16.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 3.0 μg/m3 (3) 4.1 μg/m3 (17) 17.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 4.0 μg/m3 (4) 1.1 μg/m3 (5) 13.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 7.0 μg/m3 (6) 1.4 μg/m3 (6) 13.0
 
Sept. 15, 2019, 7 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) 3.4 μg/m3 (14) 18.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 42.0 μg/m3 (38) 2.1 μg/m3 (9) 38.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 8.0 μg/m3 (7) 3.4 μg/m3 (14) 20.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 10.0 μg/m3 (9) 7.1 μg/m3 (30) 30.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 9.0 μg/m3 (8) 3.6 μg/m3 (15) 23.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 12.0 μg/m3 (11) 2.9 μg/m3 (12) 23.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 20.0 μg/m3 (18) 3.6 μg/m3 (15) 27.0
 
Sept. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 22.0 μg/m3 (20) 3.6 μg/m3 (15) 32.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 22.0 μg/m3 (20) 5.8 μg/m3 (24) 34.0
 
Sept. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 18.0 μg/m3 (16) 7.1 μg/m3 (30) 36.0
 
Sept. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 19.0 μg/m3 (17) 8.1 μg/m3 (34) 36.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 23.0 μg/m3 (21) 4.1 μg/m3 (17) 37.0
 
Sept. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 20.0 μg/m3 (18) 6.8 μg/m3 (28) 36.0
 
Sept. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 16.0 μg/m3 (15) 6.1 μg/m3 (25) 35.0
 
Sept. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 7.0 μg/m3 (6) 5.3 μg/m3 (22) 32.0
 
Sept. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 5.8 μg/m3 (24) 30.0
 
Sept. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 8.0 μg/m3 (7) 3.8 μg/m3 (16) 25.0
 
Sept. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 3.0 μg/m3 (3) 1.6 μg/m3 (7) 22.0
 
Sept. 14, 2019, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 6.0 μg/m3 (5) 1.6 μg/m3 (7) 18.0
 
Sept. 14, 2019, 11 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) 2.6 μg/m3 (11) 18.0
 
Sept. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 15.0
 
Sept. 14, 2019, 9 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) 0.9 μg/m3 (4) 14.0
 
Sept. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 4.0 μg/m3 (4) -0.2 μg/m3 (0) 14.0
 
Sept. 14, 2019, 7 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) 2.3 μg/m3 (10) 17.0
 
Sept. 14, 2019, 6 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) 2.4 μg/m3 (10) 17.0
 
Sept. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 2.0 μg/m3 (2) 1.1 μg/m3 (5) 14.0
 
Sept. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 1.0 μg/m3 (1) -2.4 μg/m3 (0) 12.0
 
Sept. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 3.0 μg/m3 (3) 0.2 μg/m3 (1) 13.0
 
Sept. 14, 2019, 2 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) 2.9 μg/m3 (12) 18.0
 
Sept. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 7.0 μg/m3 (6) 2.1 μg/m3 (9) 19.0
 
Sept. 14, 2019, midnight N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 5.0 μg/m3 (5) 1.4 μg/m3 (6) 22.0
 
Sept. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 5.0 μg/m3 (5) -0.2 μg/m3 (0) 25.0
 
Sept. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 4.0 μg/m3 (4) 0.2 μg/m3 (1) 26.0
 
Sept. 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) 1.7 μg/m3 (7) 25.0
 
Sept. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) 1.2 μg/m3 (5) 25.0
 
Sept. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 7.0 μg/m3 (6) 0.5 μg/m3 (2) 25.0
 
Sept. 13, 2019, 6 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) 1.9 μg/m3 (8) 24.0
 
Sept. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 7.0 μg/m3 (6) 2.6 μg/m3 (11) 24.0
 
Sept. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 5.0 μg/m3 (5) 2.4 μg/m3 (10) 22.0
 
Sept. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 2.0 μg/m3 (2) 2.9 μg/m3 (12) 21.0
 
Sept. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 3.0 μg/m3 (3) 3.1 μg/m3 (13) 19.0
 
Sept. 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 3.0 μg/m3 (3) 5.1 μg/m3 (21) 21.0
 
Sept. 13, 2019, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 1.0 μg/m3 (1) 0.7 μg/m3 (3) 18.0
 
Sept. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 2.0 μg/m3 (2) -2.4 μg/m3 (0) 18.0
 
Sept. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 0.0 μg/m3 (0) -1.7 μg/m3 (0) 18.0
 
Sept. 13, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 3.0 μg/m3 (3) -0.2 μg/m3 (0) 18.0
 
Sept. 13, 2019, 8 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) -0.7 μg/m3 (0) 18.0
 
Sept. 13, 2019, 7 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) -0.9 μg/m3 (0) 17.0
 
Sept. 13, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 3.0 μg/m3 (3) -0.9 μg/m3 (0) 15.0
 
Sept. 13, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 0.0 μg/m3 (0) -1.7 μg/m3 (0) 15.0
 
Sept. 13, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 1.0 μg/m3 (1) -0.9 μg/m3 (0) 17.0
 
Sept. 13, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 3.0 μg/m3 (3) -0.7 μg/m3 (0) 18.0
 
Sept. 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 3.0 μg/m3 (3) 0.4 μg/m3 (2) 19.0
 
Sept. 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 4.0 μg/m3 (4) 0.7 μg/m3 (3) 18.0
 
Sept. 13, 2019, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 5.0 μg/m3 (5) 2.2 μg/m3 (9) 20.0
 
Sept. 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 21.0
 
Sept. 12, 2019, 10 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) -2.7 μg/m3 (0) 26.0
 
Sept. 12, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) -0.2 μg/m3 (0) 25.0
 
Sept. 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 3.0 μg/m3 (3) 3.4 μg/m3 (14) 21.0
 
Sept. 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 1.0 μg/m3 (1) 2.2 μg/m3 (9) 18.0
 
Sept. 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 1.0 μg/m3 (1) 1.7 μg/m3 (7) 17.0
 
Sept. 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 1.0 μg/m3 (1) 2.9 μg/m3 (12) 15.0
 
Sept. 12, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 1.0 μg/m3 (1) 0.7 μg/m3 (3) 15.0
 
Sept. 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 0.0 μg/m3 (0) -0.7 μg/m3 (0) 15.0
 
Sept. 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 1.0 μg/m3 (1) -0.2 μg/m3 (0) 14.0
 
Sept. 12, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A -1.0 μg/m3 (0) -0.2 μg/m3 (0) 15.0
 
Sept. 12, 2019, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A -3.0 μg/m3 (0) 0.4 μg/m3 (2) 15.0
 
Sept. 12, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A -2.0 μg/m3 (0) -0.7 μg/m3 (0) 15.0
 
Sept. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A -1.0 μg/m3 (0) -0.9 μg/m3 (0) 15.0
 
Sept. 12, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A -2.0 μg/m3 (0) -2.7 μg/m3 (0) 16.0
 
Sept. 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 0.0 μg/m3 (0) -2.4 μg/m3 (0) 16.0
 
Sept. 12, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 2.0 μg/m3 (2) 0.9 μg/m3 (4) 15.0
 
Sept. 12, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 2.0 μg/m3 (2) -0.2 μg/m3 (0) 15.0
 
Sept. 12, 2019, 5 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) -1.9 μg/m3 (0) 18.0
 
Sept. 12, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A -1.0 μg/m3 (0) -0.2 μg/m3 (0) 20.0
 
Sept. 12, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 2.0 μg/m3 (2) 0.4 μg/m3 (2) 21.0
 
Sept. 12, 2019, 2 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) 1.6 μg/m3 (7) 21.0
 
Sept. 12, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 3.0 μg/m3 (3) 5.3 μg/m3 (22) 24.0
 
Sept. 12, 2019, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 11, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A N/A 28.0
 
Sept. 11, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 4.0 μg/m3 (4) 1.7 μg/m3 (7) 30.0
 
Sept. 11, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 4.0 μg/m3 (4) 4.1 μg/m3 (17) 28.0
 
Sept. 11, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 28.0
 
Sept. 11, 2019, 7 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) 2.9 μg/m3 (12) 28.0
 
Sept. 11, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 11, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) N/A 5.0
 
Sept. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 32.0
 
Sept. 11, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 4.0 μg/m3 (4) 0.9 μg/m3 (4) 31.0
 
Sept. 11, 2019, 2 p.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
 
Sept. 11, 2019, 1 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) 1.7 μg/m3 (7) 23.0
 
Sept. 11, 2019, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 3.0 μg/m3 (3) 3.6 μg/m3 (15) 23.0
 
Sept. 11, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 2.0 μg/m3 (2) 4.4 μg/m3 (18) 27.0
 
Sept. 11, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 3.0 μg/m3 (3) 0.9 μg/m3 (4) 28.0
 
Sept. 11, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 6.0 μg/m3 (5) 0.7 μg/m3 (3) 28.0
 
Sept. 11, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 4.0 μg/m3 (4) -1.6 μg/m3 (0) 27.0
 
Sept. 11, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 4.0 μg/m3 (4) -1.7 μg/m3 (0) 25.0
 
Sept. 11, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) 1.4 μg/m3 (6) 25.0
 
Sept. 11, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 9.0 μg/m3 (8) 1.6 μg/m3 (7) 32.0
 
Sept. 11, 2019, 4 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) 1.6 μg/m3 (7) 24.0
 
Sept. 11, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 7.0 μg/m3 (6) 0.9 μg/m3 (4) 26.0
 
Sept. 11, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 3.0 μg/m3 (3) 0.5 μg/m3 (2) 25.0
 
Sept. 11, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 5.0 μg/m3 (5) 2.2 μg/m3 (9) 23.0
 
Sept. 11, 2019, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 8.0 μg/m3 (7) 1.4 μg/m3 (6) 24.0
 
Sept. 10, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 6.0 μg/m3 (5) 0.2 μg/m3 (1) 28.0
 
Sept. 10, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) 0.7 μg/m3 (3) 32.0
 
Sept. 10, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) -2.9 μg/m3 (0) 34.0
 
Sept. 10, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) -3.1 μg/m3 (0) 32.0
 
Sept. 10, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) -2.9 μg/m3 (0) 30.0
 
Sept. 10, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 7.0 μg/m3 (6) -1.9 μg/m3 (0) 28.0
 
Sept. 10, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 7.0 μg/m3 (6) -2.1 μg/m3 (0) 27.0
 
Sept. 10, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 2.0 μg/m3 (2) -1.6 μg/m3 (0) 24.0
 
Sept. 10, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 2.0 μg/m3 (2) -0.2 μg/m3 (0) 22.0
 
Sept. 10, 2019, 2 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) 0.7 μg/m3 (3) 17.0
 
Sept. 10, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 4.0 μg/m3 (4) 2.4 μg/m3 (10) 15.0
 
Sept. 10, 2019, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 7.0 μg/m3 (6) 1.4 μg/m3 (6) 15.0
 
Sept. 10, 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) 0.2 μg/m3 (1) 15.0
 
Sept. 10, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 7.0 μg/m3 (6) 0.9 μg/m3 (4) 16.0
 
Sept. 10, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 11.0 μg/m3 (10) 0.2 μg/m3 (1) 18.0
 
Sept. 10, 2019, 8 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) 1.2 μg/m3 (5) 20.0
 
Sept. 10, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 13.0 μg/m3 (12) 2.4 μg/m3 (10) 22.0