AQSQID: 840380250004

Site Name: Lake Ilo

Location: Dunn Co, ND

Reporting: True, Located: True

Current AQI: 35.0

Dunn Co ND, US: 47.342589, -102.645997

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 21, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 32.0
 
March 20, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 35.0
 
March 20, 2019, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 37.0
 
March 20, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 37.0
 
March 20, 2019, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 5.0 μg/m3 (5) 8.0 μg/m3 (33) 37.0
 
March 20, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 6.0 μg/m3 (5) 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 6 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 7.0 μg/m3 (6) 11.0 μg/m3 (46) 46.0
 
March 20, 2019, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 6.0 μg/m3 (5) 12.0 μg/m3 (50) 50.0
 
March 20, 2019, 4 p.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 6.0 μg/m3 (5) 13.0 μg/m3 (52) 52.0
 
March 20, 2019, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 6.0 μg/m3 (5) 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 6.0 μg/m3 (5) 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 6.0 μg/m3 (5) 7.0 μg/m3 (29) 29.0
 
March 20, 2019, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 5.0 μg/m3 (5) 6.0 μg/m3 (25) 28.0
 
March 20, 2019, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 29.0
 
March 20, 2019, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 31.0
 
March 20, 2019, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 32.0
 
March 20, 2019, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 5.0 μg/m3 (5) 6.0 μg/m3 (25) 34.0
 
March 20, 2019, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 36.0
 
March 20, 2019, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 35.0
 
March 20, 2019, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 35.0
 
March 20, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 3.0 μg/m3 (3) -1.0 μg/m3 (0) 33.0
 
March 20, 2019, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 3.0 μg/m3 (3) -2.0 μg/m3 (0) 33.0
 
March 20, 2019, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 32.0
 
March 20, 2019, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 32.0
 
March 20, 2019, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 3.0 μg/m3 (3) -1.0 μg/m3 (0) 32.0
 
March 19, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 34.0
 
March 19, 2019, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (8) 35.0
 
March 19, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 35.0
 
March 19, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 1.0 μg/m3 (1) 5.0 μg/m3 (21) 35.0
 
March 19, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 2.0 μg/m3 (2) 6.0 μg/m3 (25) 34.0
 
March 19, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 4.0 μg/m3 (4) 8.0 μg/m3 (33) 34.0
 
March 19, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 4.0 μg/m3 (4) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 4.0 μg/m3 (4) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 6.0 μg/m3 (5) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 5.0 μg/m3 (5) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 6.0 μg/m3 (5) 17.0 μg/m3 (61) 61.0
 
March 19, 2019, noon N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 4.0 μg/m3 (4) 16.0 μg/m3 (59) 59.0
 
March 19, 2019, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 5.0 μg/m3 (5) 16.0 μg/m3 (59) 59.0
 
March 19, 2019, 10 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 5.0 μg/m3 (5) 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 4.0 μg/m3 (4) 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 6.0 μg/m3 (5) 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 7 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 6.0 μg/m3 (5) 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 6.0 μg/m3 (5) 7.0 μg/m3 (29) 31.0
 
March 19, 2019, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 33.0
 
March 19, 2019, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 33.0
 
March 19, 2019, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 5.0 μg/m3 (5) 6.0 μg/m3 (25) 32.0
 
March 19, 2019, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 34.0
 
March 18, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 33.0
 
March 18, 2019, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 34.0
 
March 18, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 35.0
 
March 18, 2019, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 2.0 μg/m3 (2) 4.0 μg/m3 (17) 35.0
 
March 18, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 36.0
 
March 18, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 37.0
 
March 18, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 3.0 μg/m3 (3) 5.0 μg/m3 (21) 37.0
 
March 18, 2019, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 36.0
 
March 18, 2019, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 35.0
 
March 18, 2019, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 35.0
 
March 18, 2019, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 34.0
 
March 18, 2019, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 2.0 μg/m3 (2) 5.0 μg/m3 (21) 35.0
 
March 18, 2019, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 2.0 μg/m3 (2) 7.0 μg/m3 (29) 33.0
 
March 18, 2019, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 33.0
 
March 18, 2019, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (8) 32.0
 
March 18, 2019, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 2.0 μg/m3 (2) 3.0 μg/m3 (12) 32.0
 
March 18, 2019, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 30.0
 
March 18, 2019, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 28.0
 
March 18, 2019, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 28.0
 
March 18, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 31.0
 
March 18, 2019, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 30.0
 
March 18, 2019, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 28.0
 
March 18, 2019, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 32.0
 
March 18, 2019, midnight N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 34.0
 
March 17, 2019, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 37.0
 
March 17, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (12) 39.0
 
March 17, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) N/A 3.0 μg/m3 (3) 4.0 μg/m3 (17) 39.0
 
March 17, 2019, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 3.0 μg/m3 (3) 5.0 μg/m3 (21) 38.0
 
March 17, 2019, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 49.0 ppb (38) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 38.0
 
March 17, 2019, 6 p.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 47.0 ppb (36) N/A 5.0 μg/m3 (5) 7.0 μg/m3 (29) 36.0
 
March 17, 2019, 5 p.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) 46.0 ppb (35) N/A 5.0 μg/m3 (5) 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 5.0 μg/m3 (5) 8.0 μg/m3 (33) 35.0
 
March 17, 2019, 3 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 6.0 μg/m3 (5) 7.0 μg/m3 (29) 33.0
 
March 17, 2019, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 6.0 μg/m3 (5) 6.0 μg/m3 (25) 32.0
 
March 17, 2019, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 31.0
 
March 17, 2019, noon N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 32.0
 
March 17, 2019, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 35.0
 
March 17, 2019, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 36.0
 
March 17, 2019, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 38.0
 
March 17, 2019, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 3.0 μg/m3 (3) 5.0 μg/m3 (21) 38.0
 
March 17, 2019, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 37.0
 
March 17, 2019, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 38.0
 
March 17, 2019, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 50.0 ppb (38) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 38.0
 
March 17, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 49.0 ppb (38) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 38.0
 
March 17, 2019, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 38.0
 
March 17, 2019, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 38.0
 
March 17, 2019, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (12) 40.0
 
March 17, 2019, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (12) 38.0
 
March 16, 2019, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 40.0
 
March 16, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 53.0 ppb (41) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 41.0
 
March 16, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) N/A 3.0 μg/m3 (3) 4.0 μg/m3 (17) 40.0
 
March 16, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 53.0 ppb (41) N/A 2.0 μg/m3 (2) 5.0 μg/m3 (21) 41.0
 
March 16, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 53.0 ppb (41) N/A 3.0 μg/m3 (3) 6.0 μg/m3 (25) 41.0
 
March 16, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 50.0 ppb (38) N/A 4.0 μg/m3 (4) 11.0 μg/m3 (46) 46.0
 
March 16, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 7.0 μg/m3 (6) 12.0 μg/m3 (50) 50.0
 
March 16, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 7.0 μg/m3 (6) 9.0 μg/m3 (38) 38.0
 
March 16, 2019, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 7.0 μg/m3 (6) 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 7.0 μg/m3 (6) 6.0 μg/m3 (25) 32.0
 
March 16, 2019, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 6.0 μg/m3 (5) 6.0 μg/m3 (25) 32.0
 
March 16, 2019, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 7.0 μg/m3 (6) 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 32.0
 
March 16, 2019, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 33.0
 
March 16, 2019, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 3.0 μg/m3 (3) 5.0 μg/m3 (21) 32.0
 
March 16, 2019, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 3.0 μg/m3 (3) 5.0 μg/m3 (21) 32.0
 
March 16, 2019, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 27.0
 
March 16, 2019, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 3.0 μg/m3 (3) 5.0 μg/m3 (21) 31.0
 
March 16, 2019, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 32.0
 
March 16, 2019, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 35.0
 
March 16, 2019, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 35.0
 
March 16, 2019, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 35.0
 
March 16, 2019, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 36.0
 
March 15, 2019, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 37.0
 
March 15, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 38.0
 
March 15, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 50.0 ppb (38) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 38.0
 
March 15, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 50.0 ppb (38) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 38.0
 
March 15, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 49.0 ppb (38) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 38.0
 
March 15, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 37.0
 
March 15, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 35.0
 
March 15, 2019, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 5.0 μg/m3 (5) 7.0 μg/m3 (29) 34.0
 
March 15, 2019, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 4.0 μg/m3 (4) 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 5.0 μg/m3 (5) 10.0 μg/m3 (42) 42.0
 
March 15, 2019, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 4.0 μg/m3 (4) 9.0 μg/m3 (38) 38.0
 
March 15, 2019, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 3.0 μg/m3 (3) 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 3.0 μg/m3 (3) 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 34.0
 
March 15, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 5.0 μg/m3 (5) 7.0 μg/m3 (29) 35.0
 
March 15, 2019, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 5.0 μg/m3 (5) 6.0 μg/m3 (25) 35.0
 
March 15, 2019, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 36.0
 
March 15, 2019, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 37.0
 
March 15, 2019, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 35.0
 
March 15, 2019, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (12) 33.0
 
March 15, 2019, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 43.0 ppb (33) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 33.0
 
March 15, 2019, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 37.0
 
March 15, 2019, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) N/A 5.0 μg/m3 (5) 6.0 μg/m3 (25) 39.0
 
March 14, 2019, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 40.0
 
March 14, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 39.0
 
March 14, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 39.0
 
March 14, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 38.0
 
March 14, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 38.0
 
March 14, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 36.0
 
March 14, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 5.0 μg/m3 (5) 6.0 μg/m3 (25) 35.0
 
March 14, 2019, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 33.0
 
March 14, 2019, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 32.0
 
March 14, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 31.0
 
March 14, 2019, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 29.0
 
March 14, 2019, noon N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 31.0
 
March 14, 2019, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 31.0
 
March 14, 2019, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 31.0
 
March 14, 2019, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 32.0
 
March 14, 2019, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 2.0 ppb (3) 42.0 ppb (32) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 32.0
 
March 14, 2019, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 2.0 ppb (3) 43.0 ppb (33) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 33.0
 
March 14, 2019, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 2.0 ppb (3) 44.0 ppb (34) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (12) 34.0
 
March 14, 2019, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (12) 34.0
 
March 14, 2019, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 35.0
 
March 14, 2019, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 35.0
 
March 14, 2019, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 36.0
 
March 14, 2019, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 3.0 ppb (4) 48.0 ppb (37) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 37.0