ID: 2165

AQSQID: 460110003

Site Name: Research Farm

Added: April 21, 2020, 6:24 p.m.

Updated: Jan. 16, 2021, 11:30 a.m.

Location: Brookings (Wern Ave), SD

Reporting: True, Located: True

Current AQI: 30.0

Brookings (Wern Ave) SD, US: 44.348604, -96.807299

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 8.3 μg/m3 (8) -2.6 μg/m3 (0) 30.0
 
Jan. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 9.0 μg/m3 (9) 1.0 μg/m3 (5) 30.0
 
Jan. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 5.6 μg/m3 (6) 2.7 μg/m3 (12) 30.0
 
Jan. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 5.8 μg/m3 (6) 0.3 μg/m3 (2) 30.0
 
Jan. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 10.4 μg/m3 (10) -0.1 μg/m3 (0) 30.0
 
Jan. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 7.8 μg/m3 (8) 1.0 μg/m3 (5) 29.0
 
Jan. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 9.0 μg/m3 (9) 3.0 μg/m3 (13) 30.0
 
Jan. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 9.8 μg/m3 (10) 3.7 μg/m3 (16) 30.0
 
Jan. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 12.6 μg/m3 (12) -0.1 μg/m3 (0) 29.0
 
Jan. 16, 2021, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 10.6 μg/m3 (10) -3.7 μg/m3 (0) 29.0
 
Jan. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 8.6 μg/m3 (8) -4.0 μg/m3 (0) 28.0
 
Jan. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 9.7 μg/m3 (9) -4.9 μg/m3 (0) 27.0
 
Jan. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 11.1 μg/m3 (11) -4.7 μg/m3 (0) 27.0
 
Jan. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 9.5 μg/m3 (9) -2.3 μg/m3 (0) 27.0
 
Jan. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 15.6 μg/m3 (15) -1.3 μg/m3 (0) 27.0
 
Jan. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 7.1 μg/m3 (7) -1.1 μg/m3 (0) 27.0
 
Jan. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 7.1 μg/m3 (7) -2.8 μg/m3 (0) 28.0
 
Jan. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 11.9 μg/m3 (12) -2.0 μg/m3 (0) 28.0
 
Jan. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 8.6 μg/m3 (8) 0.8 μg/m3 (4) 29.0
 
Jan. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 8.1 μg/m3 (8) -0.6 μg/m3 (0) 31.0
 
Jan. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 11.9 μg/m3 (12) -1.3 μg/m3 (0) 32.0
 
Jan. 15, 2021, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 10.7 μg/m3 (10) -1.3 μg/m3 (0) 33.0
 
Jan. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 14.8 μg/m3 (14) -0.8 μg/m3 (0) 34.0
 
Jan. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 20.2 μg/m3 (19) 0.3 μg/m3 (2) 35.0
 
Jan. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 16.8 μg/m3 (16) -0.6 μg/m3 (0) 36.0
 
Jan. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 22.9 μg/m3 (22) -0.3 μg/m3 (0) 37.0
 
Jan. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 21.7 μg/m3 (21) -0.8 μg/m3 (0) 38.0
 
Jan. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 15.6 μg/m3 (15) -0.8 μg/m3 (0) 38.0
 
Jan. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 16.4 μg/m3 (16) -0.3 μg/m3 (0) 38.0
 
Jan. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 11.1 μg/m3 (11) -1.3 μg/m3 (0) 39.0
 
Jan. 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 11.9 μg/m3 (12) -0.6 μg/m3 (0) 40.0
 
Jan. 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 13.8 μg/m3 (13) -0.3 μg/m3 (0) 39.0
 
Jan. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 15.1 μg/m3 (14) -0.6 μg/m3 (0) 38.0
 
Jan. 15, 2021, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 18.5 μg/m3 (18) -0.1 μg/m3 (0) 37.0
 
Jan. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 30.5 μg/m3 (29) 1.0 μg/m3 (5) 37.0
 
Jan. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 61.2 μg/m3 (55) 2.0 μg/m3 (9) 55.0
 
Jan. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 48.8 μg/m3 (46) 2.7 μg/m3 (12) 46.0
 
Jan. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 42.9 μg/m3 (40) 1.5 μg/m3 (7) 40.0
 
Jan. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 35.1 μg/m3 (33) 1.5 μg/m3 (7) 38.0
 
Jan. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 14.8 μg/m3 (14) 2.7 μg/m3 (12) 37.0
 
Jan. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.8 μg/m3 (8) 3.2 μg/m3 (14) 14.0
 
Jan. 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.6 μg/m3 (8) 1.3 μg/m3 (6) 8.0
 
Jan. 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.6 μg/m3 (7) 2.7 μg/m3 (12) 12.0
 
Jan. 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.8 μg/m3 (8) 1.7 μg/m3 (8) 8.0
 
Jan. 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.6 μg/m3 (12) 3.0 μg/m3 (13) 13.0
 
Jan. 14, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.6 μg/m3 (8) 2.0 μg/m3 (9) 9.0
 
Jan. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.6 μg/m3 (22) 2.2 μg/m3 (10) 22.0
 
Jan. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 44.1 μg/m3 (41) 4.6 μg/m3 (20) 41.0
 
Jan. 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.5 μg/m3 (19) 5.6 μg/m3 (24) 24.0
 
Jan. 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (17) 4.9 μg/m3 (21) 21.0
 
Jan. 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.6 μg/m3 (7) 2.7 μg/m3 (12) 12.0
 
Jan. 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (9) 0.9 μg/m3 (4) 9.0
 
Jan. 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.5 μg/m3 (9) 3.2 μg/m3 (14) 14.0
 
Jan. 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.3 μg/m3 (9) 3.0 μg/m3 (13) 13.0
 
Jan. 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.4 μg/m3 (11) 3.5 μg/m3 (15) 15.0
 
Jan. 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.6 μg/m3 (10) 0.1 μg/m3 (1) 10.0
 
Jan. 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.8 μg/m3 (15) 2.0 μg/m3 (9) 15.0
 
Jan. 14, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 17.8 μg/m3 (17) 3.5 μg/m3 (15) 17.0
 
Jan. 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.9 μg/m3 (12) 2.5 μg/m3 (11) 12.0
 
Jan. 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.3 μg/m3 (17) 0.5 μg/m3 (3) 17.0
 
Jan. 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.3 μg/m3 (15) -0.3 μg/m3 (0) 15.0
 
Jan. 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.4 μg/m3 (14) 0.1 μg/m3 (1) 14.0
 
Jan. 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.3 μg/m3 (8) 0.3 μg/m3 (2) 8.0
 
Jan. 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.3 μg/m3 (15) 2.2 μg/m3 (10) 15.0
 
Jan. 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.1 μg/m3 (13) 3.2 μg/m3 (14) 14.0
 
Jan. 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.2 μg/m3 (14) 14.0
 
Jan. 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.5 μg/m3 (17) N/A 17.0
 
Jan. 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 5.6 μg/m3 (6) 0.5 μg/m3 (3) 13.0
 
Jan. 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 4.9 μg/m3 (5) 3.7 μg/m3 (16) 18.0
 
Jan. 13, 2021, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 6.6 μg/m3 (7) 6.2 μg/m3 (26) 26.0
 
Jan. 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 7.8 μg/m3 (8) 3.7 μg/m3 (16) 19.0
 
Jan. 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 7.3 μg/m3 (7) 2.5 μg/m3 (11) 13.0
 
Jan. 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 9.3 μg/m3 (9) 0.3 μg/m3 (2) 14.0
 
Jan. 13, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 5.1 μg/m3 (5) 2.7 μg/m3 (12) 14.0
 
Jan. 13, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 6.1 μg/m3 (6) 3.5 μg/m3 (15) 15.0
 
Jan. 13, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 9.0 μg/m3 (9) 0.1 μg/m3 (1) 13.0
 
Jan. 13, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 4.2 μg/m3 (4) 1.3 μg/m3 (6) 11.0
 
Jan. 13, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 5.6 μg/m3 (6) -0.3 μg/m3 (0) 18.0
 
Jan. 13, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 9.5 μg/m3 (9) -2.8 μg/m3 (0) 24.0
 
Jan. 13, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 9.3 μg/m3 (9) -2.0 μg/m3 (0) 24.0
 
Jan. 13, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 9.0 μg/m3 (9) -0.1 μg/m3 (0) 23.0
 
Jan. 13, 2021, midnight N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 10.0 μg/m3 (10) 2.2 μg/m3 (10) 23.0
 
Jan. 12, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 13.8 μg/m3 (13) 2.2 μg/m3 (10) 24.0
 
Jan. 12, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 15.6 μg/m3 (15) 0.5 μg/m3 (3) 25.0
 
Jan. 12, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 7.1 μg/m3 (7) 2.5 μg/m3 (11) 27.0
 
Jan. 12, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 11.4 μg/m3 (11) 1.8 μg/m3 (8) 30.0
 
Jan. 12, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 11.1 μg/m3 (11) 0.3 μg/m3 (2) 30.0
 
Jan. 12, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 6.1 μg/m3 (6) -0.1 μg/m3 (0) 29.0
 
Jan. 12, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 9.7 μg/m3 (9) -0.8 μg/m3 (0) 27.0
 
Jan. 12, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 18.5 μg/m3 (18) 3.0 μg/m3 (13) 22.0
 
Jan. 12, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 8.8 μg/m3 (9) 4.7 μg/m3 (20) 20.0
 
Jan. 12, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 0.5 μg/m3 (1) 2.7 μg/m3 (12) 12.0
 
Jan. 12, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 2.4 μg/m3 (3) 3.5 μg/m3 (15) 15.0
 
Jan. 12, 2021, noon N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 2.9 μg/m3 (3) 3.2 μg/m3 (14) 14.0
 
Jan. 12, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 2.0 μg/m3 (2) 0.3 μg/m3 (2) 16.0
 
Jan. 12, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 2.9 μg/m3 (3) 0.3 μg/m3 (2) 20.0
 
Jan. 12, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 4.1 μg/m3 (4) -0.3 μg/m3 (0) 17.0
 
Jan. 12, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 4.2 μg/m3 (4) -1.8 μg/m3 (0) 19.0
 
Jan. 12, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 2.7 μg/m3 (3) -1.3 μg/m3 (0) 18.0
 
Jan. 12, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 3.9 μg/m3 (4) -2.0 μg/m3 (0) 17.0
 
Jan. 12, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 3.7 μg/m3 (4) -1.3 μg/m3 (0) 17.0
 
Jan. 12, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 0.7 μg/m3 (1) 1.5 μg/m3 (7) 18.0
 
Jan. 12, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 6.6 μg/m3 (7) 2.7 μg/m3 (12) 19.0
 
Jan. 12, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 11.6 μg/m3 (11) 2.0 μg/m3 (9) 19.0
 
Jan. 12, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 7.5 μg/m3 (7) 1.5 μg/m3 (7) 19.0
 
Jan. 12, 2021, midnight N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 8.8 μg/m3 (9) 1.0 μg/m3 (5) 22.0
 
Jan. 11, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 11.4 μg/m3 (11) 0.0 μg/m3 (0) 24.0
 
Jan. 11, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 9.0 μg/m3 (9) -0.6 μg/m3 (0) 25.0
 
Jan. 11, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 8.6 μg/m3 (8) 0.8 μg/m3 (4) 25.0
 
Jan. 11, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 6.6 μg/m3 (7) 2.5 μg/m3 (11) 25.0
 
Jan. 11, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 16.1 μg/m3 (15) 1.1 μg/m3 (5) 26.0
 
Jan. 11, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 7.3 μg/m3 (7) 2.3 μg/m3 (10) 27.0
 
Jan. 11, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 11.8 μg/m3 (11) 0.8 μg/m3 (4) 26.0
 
Jan. 11, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 12.4 μg/m3 (12) 0.1 μg/m3 (1) 25.0
 
Jan. 11, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 12.8 μg/m3 (12) 3.2 μg/m3 (14) 22.0
 
Jan. 11, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 4.2 μg/m3 (4) 3.2 μg/m3 (14) 19.0
 
Jan. 11, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 3.4 μg/m3 (4) 2.0 μg/m3 (9) 20.0
 
Jan. 11, 2021, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 6.1 μg/m3 (6) 1.7 μg/m3 (8) 20.0
 
Jan. 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 2.9 μg/m3 (3) 0.3 μg/m3 (2) 21.0
 
Jan. 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 0.7 μg/m3 (1) -1.0 μg/m3 (0) 22.0
 
Jan. 11, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 3.9 μg/m3 (4) -1.3 μg/m3 (0) 23.0
 
Jan. 11, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 6.3 μg/m3 (6) -0.1 μg/m3 (0) 24.0
 
Jan. 11, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 4.4 μg/m3 (5) 2.0 μg/m3 (9) 25.0
 
Jan. 11, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 4.6 μg/m3 (5) 3.7 μg/m3 (16) 26.0
 
Jan. 11, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 3.7 μg/m3 (4) 1.7 μg/m3 (8) 26.0
 
Jan. 11, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 1.0 μg/m3 (1) 1.5 μg/m3 (7) 28.0
 
Jan. 11, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 1.5 μg/m3 (2) 1.5 μg/m3 (7) 30.0
 
Jan. 11, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 2.2 μg/m3 (3) 1.8 μg/m3 (8) 32.0
 
Jan. 11, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 3.4 μg/m3 (4) 2.5 μg/m3 (11) 33.0
 
Jan. 11, 2021, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 6.1 μg/m3 (6) 3.0 μg/m3 (13) 32.0
 
Jan. 10, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 6.3 μg/m3 (6) 1.7 μg/m3 (8) 33.0
 
Jan. 10, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 1.2 μg/m3 (2) 0.8 μg/m3 (4) 35.0
 
Jan. 10, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 4.6 μg/m3 (5) 1.8 μg/m3 (8) 34.0
 
Jan. 10, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 8.6 μg/m3 (8) 1.8 μg/m3 (8) 32.0
 
Jan. 10, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 9.0 μg/m3 (9) 0.5 μg/m3 (3) 35.0
 
Jan. 10, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 3.6 μg/m3 (4) -0.4 μg/m3 (0) 36.0
 
Jan. 10, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 3.9 μg/m3 (4) -1.1 μg/m3 (0) 36.0
 
Jan. 10, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 4.2 μg/m3 (4) -0.1 μg/m3 (0) 34.0
 
Jan. 10, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 6.3 μg/m3 (6) 3.0 μg/m3 (13) 32.0
 
Jan. 10, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 5.3 μg/m3 (5) 4.7 μg/m3 (20) 32.0
 
Jan. 10, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 3.7 μg/m3 (4) 4.0 μg/m3 (17) 34.0
 
Jan. 10, 2021, noon N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 5.8 μg/m3 (6) 4.0 μg/m3 (17) 32.0
 
Jan. 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 4.2 μg/m3 (4) 2.7 μg/m3 (12) 30.0
 
Jan. 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 4.1 μg/m3 (4) 1.5 μg/m3 (7) 32.0
 
Jan. 10, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 5.1 μg/m3 (5) -0.1 μg/m3 (0) 28.0
 
Jan. 10, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 2.9 μg/m3 (3) 2.5 μg/m3 (11) 27.0
 
Jan. 10, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 3.7 μg/m3 (4) 2.0 μg/m3 (9) 27.0
 
Jan. 10, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 5.6 μg/m3 (6) 3.7 μg/m3 (16) 24.0
 
Jan. 10, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 9.3 μg/m3 (9) 4.7 μg/m3 (20) 24.0
 
Jan. 10, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 11.4 μg/m3 (11) 5.9 μg/m3 (25) 25.0
 
Jan. 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 17.5 μg/m3 (17) 9.6 μg/m3 (40) 40.0
 
Jan. 10, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 10.2 μg/m3 (10) 7.6 μg/m3 (32) 32.0
 
Jan. 10, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 11.4 μg/m3 (11) 8.6 μg/m3 (36) 36.0
 
Jan. 10, 2021, midnight N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 9.5 μg/m3 (9) 8.8 μg/m3 (37) 37.0
 
Jan. 9, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 13.6 μg/m3 (13) 8.1 μg/m3 (34) 34.0
 
Jan. 9, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 16.6 μg/m3 (16) 6.4 μg/m3 (27) 27.0
 
Jan. 9, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 8.8 μg/m3 (9) 5.9 μg/m3 (25) 25.0
 
Jan. 9, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 6.6 μg/m3 (7) 7.6 μg/m3 (32) 32.0
 
Jan. 9, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 4.9 μg/m3 (5) 5.2 μg/m3 (22) 24.0
 
Jan. 9, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 4.2 μg/m3 (4) 5.4 μg/m3 (23) 23.0
 
Jan. 9, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 5.8 μg/m3 (6) 7.1 μg/m3 (30) 30.0
 
Jan. 9, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 10.2 μg/m3 (10) 3.5 μg/m3 (15) 23.0
 
Jan. 9, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 4.9 μg/m3 (5) 2.2 μg/m3 (10) 23.0
 
Jan. 9, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 5.8 μg/m3 (6) 4.7 μg/m3 (20) 24.0
 
Jan. 9, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 4.9 μg/m3 (5) 7.4 μg/m3 (31) 31.0
 
Jan. 9, 2021, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 3.9 μg/m3 (4) 5.2 μg/m3 (22) 23.0
 
Jan. 9, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 5.1 μg/m3 (5) 5.2 μg/m3 (22) 23.0
 
Jan. 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 5.8 μg/m3 (6) 4.0 μg/m3 (17) 22.0