AQSQID: 460110003

Site Name: Research Farm

Location: Brookings (Wern Ave), SD

Reporting: True, Located: True

Current AQI: 20.0

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
April 2, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 5.0 μg/m3 (5) -3.4 μg/m3 (0) 20.0
 
April 2, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 0.0 μg/m3 (0) -0.9 μg/m3 (0) 19.0
 
April 2, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 19.0
 
April 2, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 4.0 μg/m3 (4) -0.9 μg/m3 (0) 19.0
 
April 2, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 4.0 μg/m3 (4) 0.7 μg/m3 (3) 19.0
 
April 2, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 5.0 μg/m3 (5) 1.5 μg/m3 (6) 18.0
 
April 2, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 17.0
 
April 2, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 9.0 μg/m3 (8) 1.2 μg/m3 (5) 15.0
 
April 2, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 11.0 μg/m3 (10) 3.4 μg/m3 (14) 14.0
 
April 2, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 12.0 μg/m3 (11) 6.1 μg/m3 (25) 25.0
 
April 2, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 9.0 μg/m3 (8) 3.9 μg/m3 (16) 16.0
 
April 2, 2020, noon N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 6.0 μg/m3 (5) 4.4 μg/m3 (18) 18.0
 
April 2, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 16.0 μg/m3 (15) 5.9 μg/m3 (25) 25.0
 
April 2, 2020, 10 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) 8.5 μg/m3 (35) 35.0
 
April 2, 2020, 9 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) 13.7 μg/m3 (54) 54.0
 
April 2, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 30.0 μg/m3 (27) 17.3 μg/m3 (61) 61.0
 
April 2, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 25.0 μg/m3 (23) 13.0 μg/m3 (52) 52.0
 
April 2, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 25.0 μg/m3 (23) 14.5 μg/m3 (55) 55.0
 
April 2, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 20.0 μg/m3 (18) 15.0 μg/m3 (56) 56.0
 
April 2, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 19.0 μg/m3 (17) 10.3 μg/m3 (43) 43.0
 
April 2, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 16.0 μg/m3 (15) 13.0 μg/m3 (52) 52.0
 
April 2, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 20.0 μg/m3 (18) 10.3 μg/m3 (43) 43.0
 
April 2, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 18.0 μg/m3 (16) 10.3 μg/m3 (43) 43.0
 
April 2, 2020, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 22.0 μg/m3 (20) 9.8 μg/m3 (41) 41.0
 
April 1, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 28.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
April 1, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 30.0 μg/m3 (27) 6.9 μg/m3 (29) 32.0
 
April 1, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 17.0 μg/m3 (15) 7.6 μg/m3 (32) 33.0
 
April 1, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 21.0 μg/m3 (19) 7.1 μg/m3 (30) 32.0
 
April 1, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 20.0 μg/m3 (18) 12.5 μg/m3 (51) 51.0
 
April 1, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 15.0 μg/m3 (14) 6.6 μg/m3 (28) 28.0
 
April 1, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 18.0 μg/m3 (16) 9.5 μg/m3 (40) 40.0
 
April 1, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 16.0 μg/m3 (15) 9.3 μg/m3 (39) 39.0
 
April 1, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 9.3 μg/m3 (39) 39.0
 
April 1, 2020, 2 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
 
April 1, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 10.0 μg/m3 (9) 3.9 μg/m3 (16) 25.0
 
April 1, 2020, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 14.0 μg/m3 (13) 5.2 μg/m3 (22) 25.0
 
April 1, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 12.0 μg/m3 (11) 6.1 μg/m3 (25) 25.0
 
April 1, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 17.0 μg/m3 (15) 7.9 μg/m3 (33) 33.0
 
April 1, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 17.0 μg/m3 (15) 6.9 μg/m3 (29) 29.0
 
April 1, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 12.0 μg/m3 (11) 7.1 μg/m3 (30) 30.0
 
April 1, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 14.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
April 1, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 3.4 μg/m3 (14) 28.0
 
April 1, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 11.0 μg/m3 (10) 1.2 μg/m3 (5) 26.0
 
April 1, 2020, 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) -0.4 μg/m3 (0) 28.0
 
April 1, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 10.0 μg/m3 (9) 1.5 μg/m3 (6) 29.0
 
April 1, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 10.0 μg/m3 (9) 2.0 μg/m3 (8) 28.0
 
April 1, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 8.0 μg/m3 (7) 2.5 μg/m3 (10) 29.0
 
April 1, 2020, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 10.0 μg/m3 (9) 3.0 μg/m3 (12) 31.0
 
March 31, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 12.0 μg/m3 (11) 1.2 μg/m3 (5) 34.0
 
March 31, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 36.0
 
March 31, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 11.0 μg/m3 (10) 3.7 μg/m3 (15) 34.0
 
March 31, 2020, 8 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) -0.6 μg/m3 (0) 32.0
 
March 31, 2020, 7 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) 0.0 μg/m3 (0) 29.0
 
March 31, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 7.0 μg/m3 (6) 3.7 μg/m3 (15) 28.0
 
March 31, 2020, 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) 4.5 μg/m3 (19) 27.0
 
March 31, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 3.5 μg/m3 (15) 27.0
 
March 31, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 7.0 μg/m3 (6) 5.2 μg/m3 (22) 26.0
 
March 31, 2020, 2 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) 3.0 μg/m3 (12) 25.0
 
March 31, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 25.0
 
March 31, 2020, noon N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 8.0 μg/m3 (7) 1.0 μg/m3 (4) 22.0
 
March 31, 2020, 11 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) 2.7 μg/m3 (11) 22.0
 
March 31, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 10.0 μg/m3 (9) 3.2 μg/m3 (13) 22.0
 
March 31, 2020, 9 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) 1.2 μg/m3 (5) 25.0
 
March 31, 2020, 8 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) 1.0 μg/m3 (4) 25.0
 
March 31, 2020, 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) -0.8 μg/m3 (0) 25.0
 
March 31, 2020, 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) -0.4 μg/m3 (0) 25.0
 
March 31, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 6.0 μg/m3 (5) 3.2 μg/m3 (13) 27.0
 
March 31, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 5.0 μg/m3 (5) 2.7 μg/m3 (11) 25.0
 
March 31, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 10.0 μg/m3 (9) 2.9 μg/m3 (12) 25.0
 
March 31, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 9.0 μg/m3 (8) 6.1 μg/m3 (25) 25.0
 
March 31, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 1.0 μg/m3 (4) 27.0
 
March 31, 2020, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) -3.7 μg/m3 (0) 33.0
 
March 30, 2020, 11 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) -3.0 μg/m3 (0) 37.0
 
March 30, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 5.0 μg/m3 (5) 0.5 μg/m3 (2) 38.0
 
March 30, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 5.0 μg/m3 (5) 0.5 μg/m3 (2) 38.0
 
March 30, 2020, 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) 1.0 μg/m3 (4) 38.0
 
March 30, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 38.0
 
March 30, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 38.0
 
March 30, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 5.0 μg/m3 (5) 0.5 μg/m3 (2) 36.0
 
March 30, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) 1.8 μg/m3 (8) 35.0
 
March 30, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 12.0 μg/m3 (11) 5.2 μg/m3 (22) 29.0
 
March 30, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 9.0 μg/m3 (8) 6.6 μg/m3 (28) 28.0
 
March 30, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (12) 17.0
 
March 30, 2020, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 5.0 μg/m3 (5) 5.2 μg/m3 (22) 22.0
 
March 30, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 9.0 μg/m3 (8) 5.7 μg/m3 (24) 24.0
 
March 30, 2020, 10 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) 3.0 μg/m3 (12) 22.0
 
March 30, 2020, 9 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) 4.4 μg/m3 (18) 22.0
 
March 30, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 12.0 μg/m3 (11) 3.2 μg/m3 (13) 22.0
 
March 30, 2020, 7 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) 2.0 μg/m3 (8) 22.0
 
March 30, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 9.0 μg/m3 (8) 1.0 μg/m3 (4) 17.0
 
March 30, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 10.0 μg/m3 (9) 2.2 μg/m3 (9) 18.0
 
March 30, 2020, 4 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) 3.9 μg/m3 (16) 28.0
 
March 30, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 30.0
 
March 30, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 3.0 μg/m3 (3) 3.7 μg/m3 (15) 30.0
 
March 30, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 3.0 μg/m3 (3) 3.7 μg/m3 (15) 30.0
 
March 30, 2020, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) 0.8 μg/m3 (3) 32.0
 
March 29, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 5.0 μg/m3 (5) 0.3 μg/m3 (1) 37.0
 
March 29, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 7.0 μg/m3 (6) -0.3 μg/m3 (0) 38.0
 
March 29, 2020, 9 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) -2.5 μg/m3 (0) 38.0
 
March 29, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 8.0 μg/m3 (7) 0.8 μg/m3 (3) 38.0
 
March 29, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 6.0 μg/m3 (5) 4.5 μg/m3 (19) 37.0
 
March 29, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 6.0 μg/m3 (5) 1.7 μg/m3 (7) 35.0
 
March 29, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 6.0 μg/m3 (5) 2.7 μg/m3 (11) 35.0
 
March 29, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) 2.7 μg/m3 (11) 33.0
 
March 29, 2020, 3 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) 2.2 μg/m3 (9) 30.0
 
March 29, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 8.0 μg/m3 (7) 0.3 μg/m3 (1) 28.0
 
March 29, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 8.0 μg/m3 (7) 2.5 μg/m3 (10) 28.0
 
March 29, 2020, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) 3.7 μg/m3 (15) 30.0
 
March 29, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 3.2 μg/m3 (13) 33.0
 
March 29, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 7.0 μg/m3 (6) 0.5 μg/m3 (2) 32.0
 
March 29, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 4.0 μg/m3 (4) 0.1 μg/m3 (0) 23.0
 
March 29, 2020, 8 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) 2.2 μg/m3 (9) 22.0
 
March 29, 2020, 7 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) 2.2 μg/m3 (9) 22.0
 
March 29, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 7.0 μg/m3 (6) 2.2 μg/m3 (9) 23.0
 
March 29, 2020, 5 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) 3.7 μg/m3 (15) 15.0
 
March 29, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 5.4 μg/m3 (23) 23.0
 
March 29, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 8.1 μg/m3 (34) 34.0
 
March 29, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 3.0 μg/m3 (3) 3.9 μg/m3 (16) 16.0
 
March 29, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 4.0 μg/m3 (4) 3.4 μg/m3 (14) 14.0
 
March 29, 2020, midnight N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 1.2 μg/m3 (5) 5.0
 
March 28, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 4.0 μg/m3 (4) 4.4 μg/m3 (18) 18.0
 
March 28, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 7.0 μg/m3 (6) 6.8 μg/m3 (28) 32.0
 
March 28, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 32.0
 
March 28, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 3.0 μg/m3 (3) 1.7 μg/m3 (7) 32.0
 
March 28, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 2.0 μg/m3 (2) 3.7 μg/m3 (15) 25.0
 
March 28, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 2.0 μg/m3 (2) 5.9 μg/m3 (25) 25.0
 
March 28, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) 3.7 μg/m3 (15) 29.0
 
March 28, 2020, 4 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) 4.9 μg/m3 (20) 30.0
 
March 28, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 10.0 μg/m3 (9) 9.1 μg/m3 (38) 38.0
 
March 28, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 13.0 μg/m3 (12) 6.4 μg/m3 (27) 27.0
 
March 28, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 9.0 μg/m3 (8) 10.0 μg/m3 (42) 42.0
 
March 28, 2020, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 9.0 μg/m3 (8) 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 9.0 μg/m3 (8) 7.6 μg/m3 (32) 32.0
 
March 28, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 9.0 μg/m3 (8) 6.6 μg/m3 (28) 28.0
 
March 28, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 7.0 μg/m3 (6) 9.5 μg/m3 (40) 40.0
 
March 28, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 5.0 μg/m3 (5) 5.4 μg/m3 (23) 27.0
 
March 28, 2020, 7 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) 4.4 μg/m3 (18) 28.0
 
March 28, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 2.0 μg/m3 (2) 2.7 μg/m3 (11) 26.0
 
March 28, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 2.0 μg/m3 (2) 2.2 μg/m3 (9) 23.0
 
March 28, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 5.0 μg/m3 (5) 4.7 μg/m3 (20) 26.0
 
March 28, 2020, 3 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) 5.9 μg/m3 (25) 28.0
 
March 28, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 9.0 μg/m3 (8) 3.2 μg/m3 (13) 28.0
 
March 28, 2020, 1 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) 1.2 μg/m3 (5) 29.0
 
March 28, 2020, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 32.0
 
March 27, 2020, 11 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) 1.3 μg/m3 (5) 34.0
 
March 27, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) 0.0 μg/m3 (0) 34.0
 
March 27, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 36.0
 
March 27, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 35.0
 
March 27, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 33.0
 
March 27, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 6.0 μg/m3 (5) 5.9 μg/m3 (25) 30.0
 
March 27, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 28.0
 
March 27, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 6.0 μg/m3 (5) 3.5 μg/m3 (15) 26.0
 
March 27, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 22.0
 
March 27, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 6.0 μg/m3 (5) 1.7 μg/m3 (7) 18.0
 
March 27, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 5.0 μg/m3 (5) 2.3 μg/m3 (10) 17.0
 
March 27, 2020, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 6.0 μg/m3 (5) 2.0 μg/m3 (8) 17.0
 
March 27, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 9.0 μg/m3 (8) 4.2 μg/m3 (18) 18.0
 
March 27, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 7.0 μg/m3 (6) 6.9 μg/m3 (29) 29.0
 
March 27, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 9.0 μg/m3 (8) 3.7 μg/m3 (15) 15.0
 
March 27, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 6.0 μg/m3 (5) 4.7 μg/m3 (20) 20.0
 
March 27, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 16.0
 
March 27, 2020, 6 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) 4.7 μg/m3 (20) 20.0
 
March 27, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 4.0 μg/m3 (4) 4.4 μg/m3 (18) 18.0
 
March 27, 2020, 4 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) 5.2 μg/m3 (22) 22.0
 
March 27, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 5.0 μg/m3 (5) 1.2 μg/m3 (5) 22.0
 
March 27, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 24.0
 
March 27, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 4.0 μg/m3 (4) 3.2 μg/m3 (13) 22.0
 
March 27, 2020, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 6.0 μg/m3 (5) 3.7 μg/m3 (15) 25.0