AQSQID: 380530002

Site Name: Trnp-Nu

Location: McKenzie Co, ND

Reporting: True, Located: True

Current AQI: 8.0

McKenzie Co ND, US: 47.6011, -103.2642

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 20, 2019, 10 p.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) N/A 8.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
March 20, 2019, 7 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 9.0 μg/m3 (8) 6.4 μg/m3 (27) 37.0
 
March 20, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 8.0 μg/m3 (7) 4.6 μg/m3 (19) 37.0
 
March 20, 2019, 5 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 9.0 μg/m3 (8) 3.8 μg/m3 (16) 36.0
 
March 20, 2019, 4 p.m. 1.7 ppb (2) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 8.0 μg/m3 (7) 5.5 μg/m3 (23) 33.0
 
March 20, 2019, 3 p.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 8.0 μg/m3 (7) 15.1 μg/m3 (57) 57.0
 
March 20, 2019, 2 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 8.0 μg/m3 (7) 1.8 μg/m3 (8) 24.0
 
March 20, 2019, 1 p.m. 2.4 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 6.0 μg/m3 (5) 0.8 μg/m3 (3) 15.0
 
March 20, 2019, noon 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 6.0 μg/m3 (5) 1.4 μg/m3 (6) 22.0
 
March 20, 2019, 11 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 7.0 μg/m3 (6) 3.8 μg/m3 (16) 28.0
 
March 20, 2019, 10 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 7.0 μg/m3 (6) 2.8 μg/m3 (12) 32.0
 
March 20, 2019, 9 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 7.0 μg/m3 (6) 2.2 μg/m3 (9) 34.0
 
March 20, 2019, 8 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 6.0 μg/m3 (5) 4.7 μg/m3 (20) 35.0
 
March 20, 2019, 7 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 5.0 μg/m3 (5) 6.6 μg/m3 (28) 35.0
 
March 20, 2019, 6 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 5.0 μg/m3 (5) 3.4 μg/m3 (14) 36.0
 
March 20, 2019, 5 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 9.0 μg/m3 (8) 2.1 μg/m3 (9) 36.0
 
March 20, 2019, 4 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 7.0 μg/m3 (6) 5.2 μg/m3 (22) 38.0
 
March 20, 2019, 3 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 7.0 μg/m3 (6) 6.4 μg/m3 (27) 38.0
 
March 20, 2019, 2 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 39.0
 
March 20, 2019, 1 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A 6.0 μg/m3 (5) 4.5 μg/m3 (19) 39.0
 
March 20, 2019, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 4.0 μg/m3 (4) 7.3 μg/m3 (30) 38.0
 
March 19, 2019, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 4.0 μg/m3 (4) 3.9 μg/m3 (16) 38.0
 
March 19, 2019, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 4.0 μg/m3 (4) 7.6 μg/m3 (32) 37.0
 
March 19, 2019, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 1.0 μg/m3 (1) 7.7 μg/m3 (32) 38.0
 
March 19, 2019, 8 p.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 4.0 μg/m3 (4) 5.5 μg/m3 (23) 38.0
 
March 19, 2019, 7 p.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 49.0 ppb (38) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 38.0
 
March 19, 2019, 6 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 4.0 μg/m3 (4) 1.7 μg/m3 (7) 36.0
 
March 19, 2019, 5 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 5.0 μg/m3 (5) 5.6 μg/m3 (23) 35.0
 
March 19, 2019, 4 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 4.0 μg/m3 (4) 11.1 μg/m3 (46) 46.0
 
March 19, 2019, 3 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 7.0 μg/m3 (6) 11.9 μg/m3 (50) 50.0
 
March 19, 2019, 2 p.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 9.0 μg/m3 (8) -0.9 μg/m3 (0) 22.0
 
March 19, 2019, 1 p.m. 6.0 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 6.0 μg/m3 (5) -2.1 μg/m3 (0) 17.0
 
March 19, 2019, noon 3.4 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 5.0 μg/m3 (5) 2.2 μg/m3 (9) 18.0
 
March 19, 2019, 11 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 5.0 μg/m3 (5) 6.4 μg/m3 (27) 27.0
 
March 19, 2019, 10 a.m. 2.3 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 7.0 μg/m3 (6) 7.2 μg/m3 (30) 30.0
 
March 19, 2019, 9 a.m. 2.4 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 9.0 μg/m3 (8) 3.7 μg/m3 (15) 26.0
 
March 19, 2019, 8 a.m. 2.5 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 8.0 μg/m3 (7) 5.8 μg/m3 (24) 28.0
 
March 19, 2019, 7 a.m. 2.5 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 8.0 μg/m3 (7) 7.4 μg/m3 (31) 32.0
 
March 19, 2019, 6 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 9.0 μg/m3 (8) 4.2 μg/m3 (18) 33.0
 
March 19, 2019, 5 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 35.0
 
March 19, 2019, 4 a.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 8.0 μg/m3 (7) 3.8 μg/m3 (16) 33.0
 
March 19, 2019, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 35.0
 
March 19, 2019, 2 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 8.0 μg/m3 (7) 2.5 μg/m3 (10) 35.0
 
March 19, 2019, 1 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 8.0 μg/m3 (7) 3.7 μg/m3 (15) 37.0
 
March 19, 2019, midnight 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 7.0 μg/m3 (6) 1.8 μg/m3 (8) 37.0
 
March 18, 2019, 11 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 6.0 μg/m3 (5) 1.5 μg/m3 (6) 37.0
 
March 18, 2019, 10 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 38.0
 
March 18, 2019, 9 p.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 5.0 μg/m3 (5) 3.5 μg/m3 (15) 38.0
 
March 18, 2019, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 5.0 μg/m3 (5) 6.1 μg/m3 (25) 36.0
 
March 18, 2019, 7 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 4.0 μg/m3 (4) 6.9 μg/m3 (29) 36.0
 
March 18, 2019, 6 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 4.0 μg/m3 (4) 4.8 μg/m3 (20) 38.0
 
March 18, 2019, 5 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 4.0 μg/m3 (4) 6.6 μg/m3 (28) 37.0
 
March 18, 2019, 4 p.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 2.0 μg/m3 (2) 18.6 μg/m3 (64) 64.0
 
March 18, 2019, 3 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 8.0 μg/m3 (7) 18.3 μg/m3 (63) 63.0
 
March 18, 2019, 2 p.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 7.0 μg/m3 (6) 7.5 μg/m3 (31) 31.0
 
March 18, 2019, 1 p.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 4.0 μg/m3 (4) 1.7 μg/m3 (7) 23.0
 
March 18, 2019, noon 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 4.0 μg/m3 (4) 2.3 μg/m3 (10) 23.0
 
March 18, 2019, 11 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 4.0 μg/m3 (4) 2.9 μg/m3 (12) 18.0
 
March 18, 2019, 10 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 2.0 μg/m3 (2) 3.2 μg/m3 (13) 14.0
 
March 18, 2019, 9 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 2.0 μg/m3 (2) 0.5 μg/m3 (2) 14.0
 
March 18, 2019, 8 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 3.0 μg/m3 (3) -1.0 μg/m3 (0) 15.0
 
March 18, 2019, 7 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 3.0 μg/m3 (3) -0.6 μg/m3 (0) 16.0
 
March 18, 2019, 6 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 7.0 μg/m3 (6) 1.1 μg/m3 (5) 17.0
 
March 18, 2019, 5 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 18.0
 
March 18, 2019, 4 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 4.0 μg/m3 (4) -0.9 μg/m3 (0) 20.0
 
March 18, 2019, 3 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 5.0 μg/m3 (5) 0.9 μg/m3 (4) 25.0
 
March 18, 2019, 2 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 28.0
 
March 18, 2019, 1 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 9.0 μg/m3 (8) 1.0 μg/m3 (4) 32.0
 
March 18, 2019, midnight 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A 6.0 μg/m3 (5) 2.1 μg/m3 (9) 40.0
 
March 17, 2019, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 53.0 ppb (41) N/A 4.0 μg/m3 (4) 3.1 μg/m3 (13) 41.0
 
March 17, 2019, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 52.0 ppb (40) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 40.0
 
March 17, 2019, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 53.0 ppb (41) N/A 3.0 μg/m3 (3) 7.3 μg/m3 (30) 41.0
 
March 17, 2019, 8 p.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (42) N/A 4.0 μg/m3 (4) 3.6 μg/m3 (15) 42.0
 
March 17, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (42) N/A 6.0 μg/m3 (5) 7.0 μg/m3 (29) 42.0
 
March 17, 2019, 6 p.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A 7.0 μg/m3 (6) 8.4 μg/m3 (35) 41.0
 
March 17, 2019, 5 p.m. 2.3 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 6.0 μg/m3 (5) 7.5 μg/m3 (31) 38.0
 
March 17, 2019, 4 p.m. 3.3 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 8.0 μg/m3 (7) 9.7 μg/m3 (40) 40.0
 
March 17, 2019, 3 p.m. 2.6 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 31.0
 
March 17, 2019, 2 p.m. 3.8 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 9.0 μg/m3 (8) 1.8 μg/m3 (8) 25.0
 
March 17, 2019, 1 p.m. 2.0 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 5.0 μg/m3 (5) 0.3 μg/m3 (1) 18.0
 
March 17, 2019, noon 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 4.0 μg/m3 (4) -0.5 μg/m3 (0) 18.0
 
March 17, 2019, 11 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 20.0
 
March 17, 2019, 10 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 27.0 ppb (21) N/A 4.0 μg/m3 (4) -0.7 μg/m3 (0) 21.0
 
March 17, 2019, 9 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 4.0 μg/m3 (4) -3.2 μg/m3 (0) 25.0
 
March 17, 2019, 8 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 4.0 μg/m3 (4) -4.2 μg/m3 (0) 26.0
 
March 17, 2019, 7 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 4.0 μg/m3 (4) -3.8 μg/m3 (0) 32.0
 
March 17, 2019, 6 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 4.0 μg/m3 (4) -1.9 μg/m3 (0) 32.0
 
March 17, 2019, 5 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 5.0 μg/m3 (5) -3.5 μg/m3 (0) 29.0
 
March 17, 2019, 4 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 4.0 μg/m3 (4) -1.4 μg/m3 (0) 29.0
 
March 17, 2019, 3 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 8.0 μg/m3 (7) 1.2 μg/m3 (5) 32.0
 
March 17, 2019, 2 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 7.0 μg/m3 (6) 1.7 μg/m3 (7) 38.0
 
March 17, 2019, 1 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (44) N/A 6.0 μg/m3 (5) 6.9 μg/m3 (29) 44.0
 
March 17, 2019, midnight 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 60.0 ppb (46) N/A 5.0 μg/m3 (5) 7.1 μg/m3 (30) 46.0
 
March 16, 2019, 11 p.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 62.0 ppb (48) N/A 4.0 μg/m3 (4) 7.3 μg/m3 (30) 48.0
 
March 16, 2019, 10 p.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 59.0 ppb (45) N/A 4.0 μg/m3 (4) 7.4 μg/m3 (31) 45.0
 
March 16, 2019, 9 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 58.0 ppb (45) N/A 4.0 μg/m3 (4) 12.8 μg/m3 (52) 52.0
 
March 16, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (44) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 44.0
 
March 16, 2019, 7 p.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 56.0 ppb (43) N/A 5.0 μg/m3 (5) 6.2 μg/m3 (26) 43.0
 
March 16, 2019, 6 p.m. 1.9 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 54.0 ppb (42) N/A 6.0 μg/m3 (5) 6.9 μg/m3 (29) 42.0
 
March 16, 2019, 5 p.m. 3.0 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 4.0 ppb (6) 49.0 ppb (38) N/A 6.0 μg/m3 (5) 7.6 μg/m3 (32) 38.0
 
March 16, 2019, 4 p.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 48.0 ppb (37) N/A 7.0 μg/m3 (6) 10.5 μg/m3 (44) 44.0
 
March 16, 2019, 3 p.m. 2.3 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 11.0 μg/m3 (10) 14.0 μg/m3 (54) 54.0
 
March 16, 2019, 2 p.m. 2.9 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 9.0 μg/m3 (8) 8.2 μg/m3 (34) 34.0
 
March 16, 2019, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 5.0 μg/m3 (5) 5.9 μg/m3 (25) 29.0
 
March 16, 2019, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 6.0 μg/m3 (5) 1.2 μg/m3 (5) 32.0
 
March 16, 2019, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 6.0 μg/m3 (5) 0.0 μg/m3 (0) 33.0
 
March 16, 2019, 10 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 5.0 μg/m3 (5) -2.1 μg/m3 (0) 34.0
 
March 16, 2019, 9 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 5.0 μg/m3 (5) -3.5 μg/m3 (0) 34.0
 
March 16, 2019, 8 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 5.0 μg/m3 (5) N/A 34.0
 
March 16, 2019, 7 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 5.0 μg/m3 (5) N/A 34.0
 
March 16, 2019, 6 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 5.0 μg/m3 (5) -4.0 μg/m3 (0) 35.0
 
March 16, 2019, 5 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 4.0 μg/m3 (4) -1.8 μg/m3 (0) 35.0
 
March 16, 2019, 4 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 4.0 μg/m3 (4) 1.3 μg/m3 (5) 35.0
 
March 16, 2019, 3 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 35.0
 
March 16, 2019, 2 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 4.0 μg/m3 (4) N/A 35.0
 
March 16, 2019, 1 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 6.0 μg/m3 (5) -0.5 μg/m3 (0) 36.0
 
March 16, 2019, midnight 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 6.0 μg/m3 (5) 3.8 μg/m3 (16) 38.0
 
March 15, 2019, 11 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 2.0 μg/m3 (2) 4.0 μg/m3 (17) 38.0
 
March 15, 2019, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A 6.0 μg/m3 (5) 2.9 μg/m3 (12) 39.0
 
March 15, 2019, 9 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A 4.0 μg/m3 (4) 7.5 μg/m3 (31) 39.0
 
March 15, 2019, 8 p.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 1.0 μg/m3 (1) 11.5 μg/m3 (48) 48.0
 
March 15, 2019, 7 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 3.0 μg/m3 (3) 5.9 μg/m3 (25) 37.0
 
March 15, 2019, 6 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 3.0 μg/m3 (3) 8.7 μg/m3 (36) 37.0
 
March 15, 2019, 5 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 6.0 μg/m3 (5) 6.4 μg/m3 (27) 36.0
 
March 15, 2019, 4 p.m. 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 4.0 μg/m3 (4) 18.6 μg/m3 (64) 64.0
 
March 15, 2019, 3 p.m. 3.7 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 9.0 μg/m3 (8) 9.2 μg/m3 (38) 38.0
 
March 15, 2019, 2 p.m. 5.0 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 9.0 μg/m3 (8) 6.3 μg/m3 (26) 26.0
 
March 15, 2019, 1 p.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 6.0 μg/m3 (5) 8.5 μg/m3 (35) 35.0
 
March 15, 2019, noon 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 4.0 μg/m3 (4) 3.4 μg/m3 (14) 26.0
 
March 15, 2019, 11 a.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 6.0 μg/m3 (5) 3.5 μg/m3 (15) 25.0
 
March 15, 2019, 10 a.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 5.0 μg/m3 (5) 3.9 μg/m3 (16) 30.0
 
March 15, 2019, 9 a.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 6.0 μg/m3 (5) 3.4 μg/m3 (14) 34.0
 
March 15, 2019, 8 a.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 6.0 μg/m3 (5) -0.1 μg/m3 (0) 35.0
 
March 15, 2019, 7 a.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 5.0 μg/m3 (5) 0.2 μg/m3 (1) 36.0
 
March 15, 2019, 6 a.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 5.0 μg/m3 (5) 2.8 μg/m3 (12) 37.0
 
March 15, 2019, 5 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 37.0
 
March 15, 2019, 4 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 6.0 μg/m3 (5) 0.2 μg/m3 (1) 38.0
 
March 15, 2019, 3 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 49.0 ppb (38) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 38.0
 
March 15, 2019, 2 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 4.0 μg/m3 (4) -0.7 μg/m3 (0) 37.0
 
March 15, 2019, 1 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 6.0 μg/m3 (5) 6.2 μg/m3 (26) 36.0
 
March 15, 2019, midnight 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 3.0 ppb (4) 48.0 ppb (37) N/A 6.0 μg/m3 (5) 11.4 μg/m3 (48) 48.0
 
March 14, 2019, 11 p.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 54.0 ppb (42) N/A 5.0 μg/m3 (5) 5.2 μg/m3 (22) 42.0
 
March 14, 2019, 10 p.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 56.0 ppb (43) N/A 7.0 μg/m3 (6) 5.4 μg/m3 (23) 43.0
 
March 14, 2019, 9 p.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 55.0 ppb (42) N/A 6.0 μg/m3 (5) 7.6 μg/m3 (32) 42.0
 
March 14, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A 5.0 μg/m3 (5) 5.7 μg/m3 (24) 41.0
 
March 14, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A 7.0 μg/m3 (6) -0.3 μg/m3 (0) 40.0
 
March 14, 2019, 6 p.m. 1.5 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A 7.0 μg/m3 (6) -0.4 μg/m3 (0) 39.0
 
March 14, 2019, 5 p.m. 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 6.0 μg/m3 (5) 3.2 μg/m3 (13) 38.0
 
March 14, 2019, 4 p.m. 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 6.0 μg/m3 (5) 4.9 μg/m3 (20) 35.0
 
March 14, 2019, 3 p.m. 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 7.0 μg/m3 (6) 2.1 μg/m3 (9) 35.0
 
March 14, 2019, 2 p.m. 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 5.0 μg/m3 (5) 2.5 μg/m3 (10) 35.0
 
March 14, 2019, 1 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 6.0 μg/m3 (5) -3.1 μg/m3 (0) 33.0
 
March 14, 2019, noon 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 4.0 μg/m3 (4) -1.9 μg/m3 (0) 32.0
 
March 14, 2019, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 4.0 μg/m3 (4) -1.7 μg/m3 (0) 32.0
 
March 14, 2019, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 4.0 μg/m3 (4) 0.4 μg/m3 (2) 32.0
 
March 14, 2019, 9 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 4.0 μg/m3 (4) 3.7 μg/m3 (15) 32.0
 
March 14, 2019, 8 a.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 5.0 μg/m3 (5) 1.5 μg/m3 (6) 32.0
 
March 14, 2019, 7 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 34.0
 
March 14, 2019, 6 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 5.0 μg/m3 (5) 1.2 μg/m3 (5) 35.0
 
March 14, 2019, 5 a.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 5.0 μg/m3 (5) 3.8 μg/m3 (16) 35.0
 
March 14, 2019, 4 a.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 36.0
 
March 14, 2019, 3 a.m. 1.5 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 6.0 μg/m3 (5) 2.3 μg/m3 (10) 37.0
 
March 14, 2019, 2 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 6.0 μg/m3 (5) 2.3 μg/m3 (10) 38.0
 
March 14, 2019, 1 a.m. 2.5 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) N/A 8.0 μg/m3 (7) 5.3 μg/m3 (22) 38.0
 
March 14, 2019, midnight 3.3 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 52.0 ppb (40) N/A 8.0 μg/m3 (7) 7.3 μg/m3 (30) 40.0
 
March 13, 2019, 11 p.m. 3.7 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) N/A 8.0 μg/m3 (7) 6.5 μg/m3 (27) 41.0