AQSQID: 380530002

Site Name: Trnp-Nu

Location: McKenzie Co, ND

Reporting: True, Located: True

Current AQI: 12.0

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
Sept. 22, 2019, 7 a.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 5.0 ppb (4) N/A 1.0 μg/m3 (1) 3.0 μg/m3 (12) 12.0
 
Sept. 22, 2019, 6 a.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 8.0 ppb (6) N/A 0.0 μg/m3 (0) 2.0 μg/m3 (8) 8.0
 
Sept. 22, 2019, 5 a.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 9.0 ppb (7) N/A 2.0 μg/m3 (2) 0.6 μg/m3 (2) 7.0
 
Sept. 22, 2019, 4 a.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 14.0 ppb (11) N/A 3.0 μg/m3 (3) 1.6 μg/m3 (7) 11.0
 
Sept. 22, 2019, 3 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 5.0 μg/m3 (5) 0.7 μg/m3 (3) 16.0
 
Sept. 22, 2019, 2 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 4.0 μg/m3 (4) -0.6 μg/m3 (0) 14.0
 
Sept. 22, 2019, 1 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 4.0 μg/m3 (4) -0.7 μg/m3 (0) 15.0
 
Sept. 22, 2019, midnight 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 1.0 μg/m3 (1) -0.7 μg/m3 (0) 16.0
 
Sept. 21, 2019, 11 p.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 6.0 μg/m3 (5) 2.4 μg/m3 (10) 18.0
 
Sept. 21, 2019, 10 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 7.0 μg/m3 (6) 4.8 μg/m3 (20) 20.0
 
Sept. 21, 2019, 9 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 5.0 μg/m3 (5) 4.7 μg/m3 (20) 20.0
 
Sept. 21, 2019, 8 p.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 6.0 μg/m3 (5) -0.8 μg/m3 (0) 15.0
 
Sept. 21, 2019, 7 p.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 5.0 μg/m3 (5) -0.8 μg/m3 (0) 18.0
 
Sept. 21, 2019, 6 p.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 12.0 μg/m3 (11) 0.8 μg/m3 (3) 18.0
 
Sept. 21, 2019, 5 p.m. 1.6 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 6.0 μg/m3 (5) 0.1 μg/m3 (0) 16.0
 
Sept. 21, 2019, 4 p.m. 2.1 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 0.0 μg/m3 (0) N/A 14.0
 
Sept. 21, 2019, 3 p.m. 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 0.0 μg/m3 (0) N/A 17.0
 
Sept. 21, 2019, 2 p.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 4.0 μg/m3 (4) N/A 15.0
 
Sept. 21, 2019, 1 p.m. 2.4 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 3.0 μg/m3 (3) N/A 14.0
 
Sept. 21, 2019, noon 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 3.0 μg/m3 (3) -1.8 μg/m3 (0) 16.0
 
Sept. 21, 2019, 11 a.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 3.0 μg/m3 (3) 1.7 μg/m3 (7) 15.0
 
Sept. 21, 2019, 10 a.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 17.0 ppb (13) N/A 3.0 μg/m3 (3) 2.8 μg/m3 (12) 13.0
 
Sept. 21, 2019, 9 a.m. 1.8 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 15.0 ppb (12) N/A 5.0 μg/m3 (5) 4.4 μg/m3 (18) 18.0
 
Sept. 21, 2019, 8 a.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 5.0 μg/m3 (5) -1.5 μg/m3 (0) 16.0
 
Sept. 21, 2019, 7 a.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 1.0 μg/m3 (1) -4.3 μg/m3 (0) 17.0
 
Sept. 21, 2019, 6 a.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 9.0 μg/m3 (8) 3.2 μg/m3 (13) 18.0
 
Sept. 21, 2019, 5 a.m. 3.6 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 16.0 ppb (12) N/A 13.0 μg/m3 (12) 8.4 μg/m3 (35) 35.0
 
Sept. 21, 2019, 4 a.m. 4.9 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 11.0 ppb (8) N/A 15.0 μg/m3 (14) 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2019, 3 a.m. 5.6 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 13.0 ppb (10) N/A 17.0 μg/m3 (15) 1.4 μg/m3 (6) 15.0
 
Sept. 21, 2019, 2 a.m. 5.0 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 16.0 ppb (12) N/A 14.0 μg/m3 (13) 4.0 μg/m3 (17) 17.0
 
Sept. 21, 2019, 1 a.m. 4.9 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 18.0 ppb (14) N/A 10.0 μg/m3 (9) 5.6 μg/m3 (23) 23.0
 
Sept. 21, 2019, midnight 4.4 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 8.0 μg/m3 (7) 1.3 μg/m3 (5) 19.0
 
Sept. 20, 2019, 11 p.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 25.0
 
Sept. 20, 2019, 10 p.m. 3.9 ppb (4) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 7.0 μg/m3 (6) 6.5 μg/m3 (27) 27.0
 
Sept. 20, 2019, 9 p.m. 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 8.0 μg/m3 (7) 4.3 μg/m3 (18) 25.0
 
Sept. 20, 2019, 8 p.m. 3.3 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 9.0 μg/m3 (8) 3.9 μg/m3 (16) 22.0
 
Sept. 20, 2019, 7 p.m. 3.4 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 14.0 μg/m3 (13) 5.1 μg/m3 (21) 21.0
 
Sept. 20, 2019, 6 p.m. 4.6 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 8.0 μg/m3 (7) 8.1 μg/m3 (34) 34.0
 
Sept. 20, 2019, 5 p.m. 4.7 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 18.0 μg/m3 (16) 9.1 μg/m3 (38) 38.0
 
Sept. 20, 2019, 4 p.m. 3.7 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 15.0 μg/m3 (14) 4.7 μg/m3 (20) 20.0
 
Sept. 20, 2019, 3 p.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 16.0 ppb (12) N/A 11.0 μg/m3 (10) -2.2 μg/m3 (0) 12.0
 
Sept. 20, 2019, 2 p.m. 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 13.0 ppb (10) N/A 11.0 μg/m3 (10) 6.5 μg/m3 (27) 27.0
 
Sept. 20, 2019, 1 p.m. 3.1 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 8.0 ppb (6) N/A 17.0 μg/m3 (15) 4.1 μg/m3 (17) 17.0
 
Sept. 20, 2019, noon 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 12.0 ppb (9) N/A 15.0 μg/m3 (14) 2.9 μg/m3 (12) 14.0
 
Sept. 20, 2019, 11 a.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 14.0 ppb (11) N/A 11.0 μg/m3 (10) 5.2 μg/m3 (22) 22.0
 
Sept. 20, 2019, 10 a.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 13.0 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
Sept. 20, 2019, 9 a.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 15.0 μg/m3 (14) 7.2 μg/m3 (30) 30.0
 
Sept. 20, 2019, 8 a.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 17.0 μg/m3 (15) 9.4 μg/m3 (39) 39.0
 
Sept. 20, 2019, 7 a.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 23.0 μg/m3 (21) 13.8 μg/m3 (54) 54.0
 
Sept. 20, 2019, 6 a.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 23.0 μg/m3 (21) 8.8 μg/m3 (37) 37.0
 
Sept. 20, 2019, 5 a.m. 1.1 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 21.0 μg/m3 (19) -4.5 μg/m3 (0) 25.0
 
Sept. 20, 2019, 4 a.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 20.0 μg/m3 (18) -3.0 μg/m3 (0) 27.0
 
Sept. 20, 2019, 3 a.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 17.0 μg/m3 (15) -0.6 μg/m3 (0) 29.0
 
Sept. 20, 2019, 2 a.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 22.0 μg/m3 (20) -0.1 μg/m3 (0) 30.0
 
Sept. 20, 2019, 1 a.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 20.0 μg/m3 (18) 3.3 μg/m3 (14) 30.0
 
Sept. 20, 2019, midnight 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 16.0 μg/m3 (15) 6.9 μg/m3 (29) 31.0
 
Sept. 19, 2019, 11 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 21.0 μg/m3 (19) 6.4 μg/m3 (27) 32.0
 
Sept. 19, 2019, 10 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 22.0 μg/m3 (20) 6.8 μg/m3 (28) 33.0
 
Sept. 19, 2019, 9 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 16.0 μg/m3 (15) 9.9 μg/m3 (41) 41.0
 
Sept. 19, 2019, 8 p.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 16.0 μg/m3 (15) 12.8 μg/m3 (52) 52.0
 
Sept. 19, 2019, 7 p.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 15.0 μg/m3 (14) 20.4 μg/m3 (68) 68.0
 
Sept. 19, 2019, 6 p.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 12.0 μg/m3 (11) 32.8 μg/m3 (94) 94.0
 
Sept. 19, 2019, 5 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 9.0 μg/m3 (8) 6.8 μg/m3 (28) 30.0
 
Sept. 19, 2019, 4 p.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 10.0 μg/m3 (9) 7.7 μg/m3 (32) 32.0
 
Sept. 19, 2019, 3 p.m. 4.4 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 17.0 μg/m3 (15) 5.1 μg/m3 (21) 21.0
 
Sept. 19, 2019, 2 p.m. 4.5 ppb (4) 2.7 ppb (3) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 6.0 ppb (5) N/A 22.0 μg/m3 (20) 4.0 μg/m3 (17) 20.0
 
Sept. 19, 2019, 1 p.m. 3.5 ppb (3) 1.9 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 3.0 ppb (2) N/A 8.0 μg/m3 (7) 1.8 μg/m3 (8) 8.0
 
Sept. 19, 2019, noon 2.1 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 3.0 ppb (2) N/A 8.0 μg/m3 (7) 0.6 μg/m3 (2) 7.0
 
Sept. 19, 2019, 11 a.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 4.0 ppb (3) N/A 6.0 μg/m3 (5) 0.5 μg/m3 (2) 5.0
 
Sept. 19, 2019, 10 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 4.0 ppb (3) N/A 5.0 μg/m3 (5) -0.3 μg/m3 (0) 5.0
 
Sept. 19, 2019, 9 a.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 5.0 ppb (4) N/A 1.0 μg/m3 (1) -0.9 μg/m3 (0) 4.0
 
Sept. 19, 2019, 8 a.m. 1.3 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 3.0 ppb (2) N/A 2.0 μg/m3 (2) 1.5 μg/m3 (6) 6.0
 
Sept. 19, 2019, 7 a.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 4.0 ppb (3) N/A 2.0 μg/m3 (2) 1.6 μg/m3 (7) 7.0
 
Sept. 19, 2019, 6 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 5.0 ppb (4) N/A 2.0 μg/m3 (2) 0.7 μg/m3 (3) 4.0
 
Sept. 19, 2019, 5 a.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 6.0 ppb (5) N/A 3.0 μg/m3 (3) 0.5 μg/m3 (2) 5.0
 
Sept. 19, 2019, 4 a.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 7.0 ppb (5) N/A 3.0 μg/m3 (3) -1.3 μg/m3 (0) 5.0
 
Sept. 19, 2019, 3 a.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 10.0 ppb (8) N/A 5.0 μg/m3 (5) -1.8 μg/m3 (0) 8.0
 
Sept. 19, 2019, 2 a.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 16.0 ppb (12) N/A 12.0 μg/m3 (11) -4.7 μg/m3 (0) 12.0
 
Sept. 19, 2019, 1 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 14.0 μg/m3 (13) 1.0 μg/m3 (4) 18.0
 
Sept. 19, 2019, midnight 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 7.0 μg/m3 (6) 8.2 μg/m3 (34) 34.0
 
Sept. 18, 2019, 11 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 2.8 μg/m3 (12) 29.0
 
Sept. 18, 2019, 10 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 6.0 μg/m3 (5) 19.7 μg/m3 (66) 66.0
 
Sept. 18, 2019, 9 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 4.0 μg/m3 (4) 5.3 μg/m3 (22) 30.0
 
Sept. 18, 2019, 8 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 7.6 μg/m3 (32) 32.0
 
Sept. 18, 2019, 7 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 8.0 μg/m3 (7) 12.5 μg/m3 (51) 51.0
 
Sept. 18, 2019, 6 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 12.0 μg/m3 (11) 6.6 μg/m3 (28) 28.0
 
Sept. 18, 2019, 5 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 14.0 μg/m3 (13) 8.7 μg/m3 (36) 36.0
 
Sept. 18, 2019, 4 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 12.0 μg/m3 (11) -1.3 μg/m3 (0) 24.0
 
Sept. 18, 2019, 3 p.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 13.0 μg/m3 (12) -1.7 μg/m3 (0) 22.0
 
Sept. 18, 2019, 2 p.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 11.0 μg/m3 (10) 1.5 μg/m3 (6) 19.0
 
Sept. 18, 2019, 1 p.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 7.0 μg/m3 (6) -4.5 μg/m3 (0) 18.0
 
Sept. 18, 2019, noon 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 11.0 μg/m3 (10) -4.9 μg/m3 (0) 16.0
 
Sept. 18, 2019, 11 a.m. 1.6 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 9.0 μg/m3 (8) 3.4 μg/m3 (14) 15.0
 
Sept. 18, 2019, 10 a.m. 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 13.0 μg/m3 (12) 5.1 μg/m3 (21) 21.0
 
Sept. 18, 2019, 9 a.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 10.0 μg/m3 (9) 3.2 μg/m3 (13) 19.0
 
Sept. 18, 2019, 8 a.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 9.0 μg/m3 (8) -4.4 μg/m3 (0) 23.0
 
Sept. 18, 2019, 7 a.m. 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 55.0 ppb (42) N/A 5.0 μg/m3 (5) N/A 42.0
 
Sept. 18, 2019, 6 a.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 3.0 μg/m3 (3) -1.1 μg/m3 (0) 35.0
 
Sept. 18, 2019, 5 a.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 13.0 μg/m3 (12) -1.2 μg/m3 (0) 22.0
 
Sept. 18, 2019, 4 a.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 7.0 μg/m3 (6) N/A 22.0
 
Sept. 18, 2019, 3 a.m. 1.1 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 14.0 μg/m3 (13) N/A 26.0
 
Sept. 18, 2019, 2 a.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 19.0 μg/m3 (17) -1.3 μg/m3 (0) 29.0
 
Sept. 18, 2019, 1 a.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 20.0 μg/m3 (18) 3.4 μg/m3 (14) 24.0
 
Sept. 18, 2019, midnight 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 18.0 μg/m3 (16) 5.2 μg/m3 (22) 22.0
 
Sept. 17, 2019, 11 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 13.0 μg/m3 (12) 5.9 μg/m3 (25) 27.0
 
Sept. 17, 2019, 10 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 16.0 μg/m3 (15) 1.7 μg/m3 (7) 28.0
 
Sept. 17, 2019, 9 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 13.0 μg/m3 (12) 1.0 μg/m3 (4) 26.0
 
Sept. 17, 2019, 8 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 11.0 μg/m3 (10) 1.7 μg/m3 (7) 26.0
 
Sept. 17, 2019, 7 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 17.0 μg/m3 (15) 6.2 μg/m3 (26) 26.0
 
Sept. 17, 2019, 6 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 8.0 μg/m3 (7) 10.7 μg/m3 (45) 45.0
 
Sept. 17, 2019, 5 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 11.0 μg/m3 (10) 3.5 μg/m3 (15) 25.0
 
Sept. 17, 2019, 4 p.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 5.0 μg/m3 (5) 6.9 μg/m3 (29) 29.0
 
Sept. 17, 2019, 3 p.m. 2.2 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 16.0 μg/m3 (15) 7.2 μg/m3 (30) 30.0
 
Sept. 17, 2019, 2 p.m. 3.7 ppb (3) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 13.0 ppb (10) N/A 22.0 μg/m3 (20) 13.5 μg/m3 (53) 53.0
 
Sept. 17, 2019, 1 p.m. 4.7 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 8.0 ppb (6) N/A 14.0 μg/m3 (13) 2.9 μg/m3 (12) 13.0
 
Sept. 17, 2019, noon 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 10.0 ppb (8) N/A 12.0 μg/m3 (11) 1.6 μg/m3 (7) 11.0
 
Sept. 17, 2019, 11 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 9.0 ppb (7) N/A 5.0 μg/m3 (5) -1.1 μg/m3 (0) 7.0
 
Sept. 17, 2019, 10 a.m. 1.6 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 12.0 ppb (9) N/A 13.0 μg/m3 (12) 1.0 μg/m3 (4) 12.0
 
Sept. 17, 2019, 9 a.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 16.0 ppb (12) N/A 14.0 μg/m3 (13) 3.5 μg/m3 (15) 15.0
 
Sept. 17, 2019, 8 a.m. 1.8 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 13.0 μg/m3 (12) 3.2 μg/m3 (13) 15.0
 
Sept. 17, 2019, 7 a.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 12.0 μg/m3 (11) 1.7 μg/m3 (7) 17.0
 
Sept. 17, 2019, 6 a.m. 1.8 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 17.0 μg/m3 (15) N/A 18.0
 
Sept. 17, 2019, 5 a.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 20.0 μg/m3 (18) N/A 20.0
 
Sept. 17, 2019, 4 a.m. 1.9 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 24.0 μg/m3 (22) N/A 22.0
 
Sept. 17, 2019, 3 a.m. 2.1 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 26.0 μg/m3 (24) N/A 24.0
 
Sept. 17, 2019, 2 a.m. 2.3 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 28.0 μg/m3 (25) N/A 25.0
 
Sept. 17, 2019, 1 a.m. 2.9 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 26.0 μg/m3 (24) -0.3 μg/m3 (0) 24.0
 
Sept. 17, 2019, midnight 2.2 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 27.0 μg/m3 (25) 0.0 μg/m3 (0) 28.0
 
Sept. 16, 2019, 11 p.m. 2.0 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 8.0 μg/m3 (7) 0.4 μg/m3 (2) 32.0
 
Sept. 16, 2019, 10 p.m. 1.8 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 23.0 μg/m3 (21) 4.2 μg/m3 (18) 33.0
 
Sept. 16, 2019, 9 p.m. 1.9 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 19.0 μg/m3 (17) 8.7 μg/m3 (36) 36.0
 
Sept. 16, 2019, 8 p.m. 1.9 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 47.0 ppb (36) N/A 12.0 μg/m3 (11) 14.5 μg/m3 (55) 55.0
 
Sept. 16, 2019, 7 p.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 3.0 ppb (4) N/A N/A 14.0 μg/m3 (13) 20.1 μg/m3 (67) 67.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) N/A N/A 0.0 μg/m3 (0) N/A 7.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) N/A N/A
Sept. 16, 2019, 4 p.m. 2.5 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 24.0 ppb (18) N/A N/A N/A 18.0
 
Sept. 16, 2019, 3 p.m. 3.4 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 23.0 μg/m3 (21) 10.9 μg/m3 (45) 45.0
 
Sept. 16, 2019, 2 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 9.0 ppb (7) N/A 25.0 μg/m3 (23) 19.7 μg/m3 (66) 66.0
 
Sept. 16, 2019, 1 p.m. 3.5 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 6.0 ppb (5) N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 12.0
 
Sept. 16, 2019, noon 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 5.0 ppb (4) N/A 8.0 μg/m3 (7) 7.1 μg/m3 (30) 30.0
 
Sept. 16, 2019, 11 a.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 5.0 ppb (4) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (5) 5.0
 
Sept. 16, 2019, 10 a.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 6.0 ppb (5) N/A 7.0 μg/m3 (6) 0.4 μg/m3 (2) 6.0
 
Sept. 16, 2019, 9 a.m. 1.6 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 10.0 ppb (8) N/A 10.0 μg/m3 (9) -1.3 μg/m3 (0) 9.0
 
Sept. 16, 2019, 8 a.m. 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 13.0 ppb (10) N/A 7.0 μg/m3 (6) -3.9 μg/m3 (0) 10.0
 
Sept. 16, 2019, 7 a.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 12.0 ppb (9) N/A 12.0 μg/m3 (11) -3.4 μg/m3 (0) 11.0
 
Sept. 16, 2019, 6 a.m. 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 11.0 μg/m3 (10) -3.2 μg/m3 (0) 15.0
 
Sept. 16, 2019, 5 a.m. 2.1 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 13.0 μg/m3 (12) N/A 18.0
 
Sept. 16, 2019, 4 a.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 13.0 μg/m3 (12) N/A 21.0
 
Sept. 16, 2019, 3 a.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 10.0 μg/m3 (9) N/A 22.0
 
Sept. 16, 2019, 2 a.m. 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 4.0 μg/m3 (4) N/A 23.0
 
Sept. 16, 2019, 1 a.m. 2.4 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 21.0 μg/m3 (19) 1.4 μg/m3 (6) 19.0
 
Sept. 16, 2019, midnight 1.6 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 17.0 μg/m3 (15) 5.6 μg/m3 (23) 23.0
 
Sept. 15, 2019, 11 p.m. 1.3 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 26.0 μg/m3 (24) 5.3 μg/m3 (22) 28.0
 
Sept. 15, 2019, 10 p.m. 0.9 ppb (1) 0.5 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 41.0 ppb (32) N/A -1.0 μg/m3 (0) 7.8 μg/m3 (32) 32.0
 
Sept. 15, 2019, 9 p.m. 0.7 ppb (1) 0.5 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 11.0 μg/m3 (10) 5.6 μg/m3 (23) 32.0
 
Sept. 15, 2019, 8 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 2.0 μg/m3 (2) 7.4 μg/m3 (31) 32.0
 
Sept. 15, 2019, 7 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 42.0 ppb (32) N/A -3.0 μg/m3 (0) 13.0 μg/m3 (52) 52.0
 
Sept. 15, 2019, 6 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 13.0 μg/m3 (12) 8.4 μg/m3 (35) 35.0
 
Sept. 15, 2019, 5 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 17.0 μg/m3 (15) 4.8 μg/m3 (20) 22.0
 
Sept. 15, 2019, 4 p.m. 1.5 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 8.0 μg/m3 (7) 0.3 μg/m3 (1) 19.0
 
Sept. 15, 2019, 3 p.m. 2.3 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 16.0 ppb (12) N/A 17.0 μg/m3 (15) 20.5 μg/m3 (68) 68.0
 
Sept. 15, 2019, 2 p.m. 2.1 ppb (2) 1.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 9.0 ppb (7) N/A 15.0 μg/m3 (14) 1.4 μg/m3 (6) 14.0
 
Sept. 15, 2019, 1 p.m. 1.8 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 5.0 ppb (4) N/A 7.0 μg/m3 (6) 1.5 μg/m3 (6) 6.0
 
Sept. 15, 2019, noon 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 4.0 ppb (3) N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 8.0
 
Sept. 15, 2019, 11 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 5.0 ppb (4) N/A 4.0 μg/m3 (4) 4.3 μg/m3 (18) 18.0
 
Sept. 15, 2019, 10 a.m. 1.4 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 4.0 ppb (3) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 5.0
 
Sept. 15, 2019, 9 a.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 4.0 ppb (3) N/A 5.0 μg/m3 (5) -0.5 μg/m3 (0) 5.0
 
Sept. 15, 2019, 8 a.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 6.0 ppb (5) N/A 9.0 μg/m3 (8) 2.9 μg/m3 (12) 12.0