AQSQID: 460110003

Site Name: Research Farm

Location: Brookings Co, SD

Reporting: True, Located: True

Current AQI: 31.0

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
July 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 21.0 μg/m3 (19) 3.6 μg/m3 (15) 31.0
 
July 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 21.0 μg/m3 (19) 2.3 μg/m3 (10) 30.0
 
July 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 22.0 μg/m3 (20) -1.0 μg/m3 (0) 27.0
 
July 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) -1.7 μg/m3 (0) 9.0
 
July 16, 2019, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 13.0 μg/m3 (12) -0.2 μg/m3 (0) 17.0
 
July 16, 2019, 11 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) 1.1 μg/m3 (5) 16.0
 
July 16, 2019, 10 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) 0.4 μg/m3 (2) 16.0
 
July 16, 2019, 9 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) 0.9 μg/m3 (4) 15.0
 
July 16, 2019, 8 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) 1.6 μg/m3 (7) 19.0
 
July 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 16.0 μg/m3 (15) 0.9 μg/m3 (4) 23.0
 
July 16, 2019, 6 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) 1.9 μg/m3 (8) 21.0
 
July 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 16.0 μg/m3 (15) 2.4 μg/m3 (10) 16.0
 
July 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) 3.1 μg/m3 (13) 20.0
 
July 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 14.0 μg/m3 (13) 4.3 μg/m3 (18) 26.0
 
July 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 28.0
 
July 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 15.0 μg/m3 (14) -0.7 μg/m3 (0) 29.0
 
July 16, 2019, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 30.0 μg/m3 (27) 2.6 μg/m3 (11) 34.0
 
July 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 18.0 μg/m3 (16) 5.1 μg/m3 (21) 37.0
 
July 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 14.0 μg/m3 (13) 5.8 μg/m3 (24) 42.0
 
July 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 20.0 μg/m3 (18) 4.8 μg/m3 (20) 43.0
 
July 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 17.0 μg/m3 (15) 6.3 μg/m3 (26) 44.0
 
July 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 22.0 μg/m3 (20) 3.6 μg/m3 (15) 43.0
 
July 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 18.0 μg/m3 (16) 3.1 μg/m3 (13) 42.0
 
July 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 18.0 μg/m3 (16) 6.3 μg/m3 (26) 40.0
 
July 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 16.0 μg/m3 (15) 7.0 μg/m3 (29) 39.0
 
July 15, 2019, 3 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) 5.3 μg/m3 (22) 36.0
 
July 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 17.0 μg/m3 (15) 6.3 μg/m3 (26) 32.0
 
July 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 14.0 μg/m3 (13) 5.8 μg/m3 (24) 30.0
 
July 15, 2019, noon N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 7.0 μg/m3 (6) 2.9 μg/m3 (12) 35.0
 
July 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 10.0 μg/m3 (9) 3.6 μg/m3 (15) 33.0
 
July 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 10.0 μg/m3 (9) 3.3 μg/m3 (14) 36.0
 
July 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 11.0 μg/m3 (10) 4.3 μg/m3 (18) 37.0
 
July 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 15.0 μg/m3 (14) 6.2 μg/m3 (26) 35.0
 
July 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 16.0 μg/m3 (15) 4.3 μg/m3 (18) 33.0
 
July 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 12.0 μg/m3 (11) 0.9 μg/m3 (4) 32.0
 
July 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 17.0 μg/m3 (15) 2.8 μg/m3 (12) 32.0
 
July 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 17.0 μg/m3 (15) 5.0 μg/m3 (21) 34.0
 
July 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 21.0 μg/m3 (19) 6.3 μg/m3 (26) 37.0
 
July 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 22.0 μg/m3 (20) 9.2 μg/m3 (38) 39.0
 
July 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 19.0 μg/m3 (17) 5.0 μg/m3 (21) 42.0
 
July 15, 2019, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 17.0 μg/m3 (15) 5.3 μg/m3 (22) 41.0
 
July 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 18.0 μg/m3 (16) 6.3 μg/m3 (26) 40.0
 
July 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 22.0 μg/m3 (20) 4.8 μg/m3 (20) 42.0
 
July 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 18.0 μg/m3 (16) 4.3 μg/m3 (18) 43.0
 
July 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 16.0 μg/m3 (15) 6.3 μg/m3 (26) 42.0
 
July 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 32.0 μg/m3 (29) 4.6 μg/m3 (19) 42.0
 
July 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 21.0 μg/m3 (19) 6.5 μg/m3 (27) 42.0
 
July 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 20.0 μg/m3 (18) 7.5 μg/m3 (31) 39.0
 
July 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 18.0 μg/m3 (16) 3.1 μg/m3 (13) 37.0
 
July 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 17.0 μg/m3 (15) 2.4 μg/m3 (10) 34.0
 
July 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 18.0 μg/m3 (16) 4.1 μg/m3 (17) 32.0
 
July 14, 2019, 1 p.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
 
July 14, 2019, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 16.0 μg/m3 (15) 4.1 μg/m3 (17) 28.0
 
July 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 28.0
 
July 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 8.0 μg/m3 (7) 2.1 μg/m3 (9) 26.0
 
July 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 9.0 μg/m3 (8) 2.1 μg/m3 (9) 21.0
 
July 14, 2019, 8 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) 2.1 μg/m3 (9) 17.0
 
July 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 6.0 μg/m3 (5) 2.3 μg/m3 (10) 19.0
 
July 14, 2019, 6 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) 1.4 μg/m3 (6) 22.0
 
July 14, 2019, 5 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) 4.3 μg/m3 (18) 22.0
 
July 14, 2019, 4 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) 5.3 μg/m3 (22) 28.0
 
July 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 11.0 μg/m3 (10) 0.9 μg/m3 (4) 33.0
 
July 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 37.0
 
July 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 30.0
 
July 14, 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) 1.1 μg/m3 (5) 32.0
 
July 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 12.0 μg/m3 (11) 1.4 μg/m3 (6) 36.0
 
July 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 17.0 μg/m3 (15) 3.3 μg/m3 (14) 35.0
 
July 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 13.0 μg/m3 (12) 2.6 μg/m3 (11) 34.0
 
July 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 38.0
 
July 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 40.0
 
July 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 11.0 μg/m3 (10) 1.4 μg/m3 (6) 38.0
 
July 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 8.0 μg/m3 (7) -0.2 μg/m3 (0) 32.0
 
July 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 12.0 μg/m3 (11) 4.1 μg/m3 (17) 32.0
 
July 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 11.0 μg/m3 (10) 4.6 μg/m3 (19) 31.0
 
July 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 13.0 μg/m3 (12) 2.9 μg/m3 (12) 29.0
 
July 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 8.0 μg/m3 (7) 2.9 μg/m3 (12) 26.0
 
July 13, 2019, noon N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 11.0 μg/m3 (10) 3.1 μg/m3 (13) 25.0
 
July 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 18.0 μg/m3 (16) 0.2 μg/m3 (1) 23.0
 
July 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 11.0 μg/m3 (10) 3.6 μg/m3 (15) 21.0
 
July 13, 2019, 9 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) 7.0 μg/m3 (29) 29.0
 
July 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 15.0 μg/m3 (14) 4.8 μg/m3 (20) 22.0
 
July 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 19.0 μg/m3 (17) 0.9 μg/m3 (4) 22.0
 
July 13, 2019, 6 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) 2.1 μg/m3 (9) 22.0
 
July 13, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 21.0 μg/m3 (19) 3.6 μg/m3 (15) 20.0
 
July 13, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 24.0 μg/m3 (22) 5.3 μg/m3 (22) 22.0
 
July 13, 2019, 3 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) 5.1 μg/m3 (21) 22.0
 
July 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 19.0 μg/m3 (17) 5.3 μg/m3 (22) 24.0
 
July 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 14.0 μg/m3 (13) 3.3 μg/m3 (14) 27.0
 
July 13, 2019, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 14.0 μg/m3 (13) -2.6 μg/m3 (0) 33.0
 
July 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 13.0 μg/m3 (12) 0.0 μg/m3 (0) 36.0
 
July 12, 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) 1.6 μg/m3 (7) 36.0
 
July 12, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 15.0 μg/m3 (14) 3.3 μg/m3 (14) 36.0
 
July 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 16.0 μg/m3 (15) 6.3 μg/m3 (26) 35.0
 
July 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 19.0 μg/m3 (17) 7.0 μg/m3 (29) 34.0
 
July 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 22.0 μg/m3 (20) 8.5 μg/m3 (35) 35.0
 
July 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 21.0 μg/m3 (19) 8.7 μg/m3 (36) 36.0
 
July 12, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 45.0 μg/m3 (41) 5.3 μg/m3 (22) 41.0
 
July 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 30.0 μg/m3 (27) 9.4 μg/m3 (39) 39.0
 
July 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 64.0 μg/m3 (54) 11.2 μg/m3 (47) 54.0
 
July 12, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 28.0 μg/m3 (25) 6.0 μg/m3 (25) 27.0
 
July 12, 2019, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 17.0 μg/m3 (15) 5.5 μg/m3 (23) 24.0
 
July 12, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 12.0 μg/m3 (11) 6.7 μg/m3 (28) 28.0
 
July 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 12.0 μg/m3 (11) 2.9 μg/m3 (12) 26.0
 
July 12, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 17.0 μg/m3 (15) 4.3 μg/m3 (18) 30.0
 
July 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 31.0 μg/m3 (28) 6.5 μg/m3 (27) 32.0
 
July 12, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 23.0 μg/m3 (21) 7.0 μg/m3 (29) 32.0
 
July 12, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 22.0 μg/m3 (20) 4.6 μg/m3 (19) 29.0
 
July 12, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 14.0 μg/m3 (13) 2.8 μg/m3 (12) 30.0
 
July 12, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 16.0 μg/m3 (15) 2.1 μg/m3 (9) 32.0
 
July 12, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 21.0 μg/m3 (19) 4.6 μg/m3 (19) 35.0
 
July 12, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 23.0 μg/m3 (21) 7.2 μg/m3 (30) 36.0
 
July 12, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 27.0 μg/m3 (25) 5.6 μg/m3 (23) 38.0
 
July 12, 2019, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 29.0 μg/m3 (26) 15.6 μg/m3 (58) 58.0
 
July 11, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 44.0 μg/m3 (40) 5.6 μg/m3 (23) 40.0
 
July 11, 2019, 10 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) 5.1 μg/m3 (21) 37.0
 
July 11, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 23.0 μg/m3 (21) 7.3 μg/m3 (30) 36.0
 
July 11, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 25.0 μg/m3 (23) 8.5 μg/m3 (35) 35.0
 
July 11, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 16.0 μg/m3 (15) 8.9 μg/m3 (37) 37.0
 
July 11, 2019, 6 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) 6.3 μg/m3 (26) 32.0
 
July 11, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 18.0 μg/m3 (16) 5.5 μg/m3 (23) 30.0
 
July 11, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 23.0 μg/m3 (21) 7.8 μg/m3 (32) 32.0
 
July 11, 2019, 3 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) 11.9 μg/m3 (50) 50.0
 
July 11, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 24.0
 
July 11, 2019, 1 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) 5.5 μg/m3 (23) 23.0
 
July 11, 2019, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 10.0 μg/m3 (9) 9.2 μg/m3 (38) 38.0
 
July 11, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 8.0 μg/m3 (7) 5.8 μg/m3 (24) 24.0
 
July 11, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 10.0 μg/m3 (9) 5.1 μg/m3 (21) 21.0
 
July 11, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 15.0 μg/m3 (14) 3.8 μg/m3 (16) 18.0
 
July 11, 2019, 8 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) 4.8 μg/m3 (20) 20.0
 
July 11, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
July 11, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 13.0 μg/m3 (12) 6.3 μg/m3 (26) 26.0
 
July 11, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 13.0 μg/m3 (12) 7.3 μg/m3 (30) 30.0
 
July 11, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 8.0 μg/m3 (7) 0.7 μg/m3 (3) 22.0
 
July 11, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 3.3 μg/m3 (14) 24.0
 
July 11, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 13.0 μg/m3 (12) 6.3 μg/m3 (26) 27.0
 
July 11, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 15.0 μg/m3 (14) 9.4 μg/m3 (39) 39.0
 
July 11, 2019, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 15.0 μg/m3 (14) 6.0 μg/m3 (25) 30.0
 
July 10, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 19.0 μg/m3 (17) 4.8 μg/m3 (20) 31.0
 
July 10, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 20.0 μg/m3 (18) 3.1 μg/m3 (13) 32.0
 
July 10, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 10.0 μg/m3 (9) -0.5 μg/m3 (0) 33.0
 
July 10, 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) -0.5 μg/m3 (0) 32.0
 
July 10, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 13.0 μg/m3 (12) -0.2 μg/m3 (0) 32.0
 
July 10, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 3.0 μg/m3 (3) -1.2 μg/m3 (0) 31.0
 
July 10, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 3.0 μg/m3 (3) -2.9 μg/m3 (0) 33.0
 
July 10, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 4.0 μg/m3 (4) 0.9 μg/m3 (4) 34.0
 
July 10, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 29.0
 
July 10, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 14.0 μg/m3 (13) 7.2 μg/m3 (30) 30.0
 
July 10, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 14.0 μg/m3 (13) 3.6 μg/m3 (15) 31.0
 
July 10, 2019, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 16.0 μg/m3 (15) 5.0 μg/m3 (21) 32.0
 
July 10, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 10.0 μg/m3 (9) 3.6 μg/m3 (15) 34.0
 
July 10, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 9.0 μg/m3 (8) 2.8 μg/m3 (12) 34.0
 
July 10, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 12.0 μg/m3 (11) 1.4 μg/m3 (6) 34.0
 
July 10, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 12.0 μg/m3 (11) 1.9 μg/m3 (8) 35.0
 
July 10, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 20.0 μg/m3 (18) 1.6 μg/m3 (7) 35.0
 
July 10, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 8.0 μg/m3 (7) 0.7 μg/m3 (3) 34.0
 
July 10, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 18.0 μg/m3 (16) -0.5 μg/m3 (0) 33.0
 
July 10, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 16.0 μg/m3 (15) -1.0 μg/m3 (0) 34.0
 
July 10, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) -1.4 μg/m3 (0) 35.0
 
July 10, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 11.0 μg/m3 (10) -1.2 μg/m3 (0) 36.0
 
July 10, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 15.0 μg/m3 (14) -2.2 μg/m3 (0) 37.0
 
July 10, 2019, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 13.0 μg/m3 (12) -1.9 μg/m3 (0) 39.0
 
July 9, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 4.0 μg/m3 (4) -0.2 μg/m3 (0) 39.0
 
July 9, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 6.0 μg/m3 (5) 0.4 μg/m3 (2) 38.0
 
July 9, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 3.0 μg/m3 (3) -0.2 μg/m3 (0) 38.0
 
July 9, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 4.0 μg/m3 (4) -0.7 μg/m3 (0) 38.0
 
July 9, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 4.0 μg/m3 (4) 2.1 μg/m3 (9) 37.0
 
July 9, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 3.0 μg/m3 (3) 3.6 μg/m3 (15) 36.0
 
July 9, 2019, 5 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) 0.7 μg/m3 (3) 32.0