AQSQID: 380530002

Site Name: Trnp-Nu

Location: McKenzie Co, ND

Reporting: True, Located: True

Current AQI: 35.0

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
May 24, 2019, midnight 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 14.0 μg/m3 (13) 6.9 μg/m3 (29) 35.0
 
May 23, 2019, 11 p.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 16.0 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
May 23, 2019, 10 p.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A 19.0 μg/m3 (17) 23.5 μg/m3 (74) 74.0
 
May 23, 2019, 9 p.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 18.0 μg/m3 (16) 7.3 μg/m3 (30) 38.0
 
May 23, 2019, 8 p.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 9.0 μg/m3 (8) 17.6 μg/m3 (62) 62.0
 
May 23, 2019, 7 p.m. 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A 12.0 μg/m3 (11) 4.2 μg/m3 (18) 36.0
 
May 23, 2019, 6 p.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 12.0 μg/m3 (11) 9.8 μg/m3 (41) 41.0
 
May 23, 2019, 5 p.m. 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 6.0 μg/m3 (5) 12.6 μg/m3 (51) 51.0
 
May 23, 2019, 4 p.m. 1.3 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) 13.3 μg/m3 (53) 53.0
 
May 23, 2019, 3 p.m. 1.1 ppb (1) 0.1 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) 8.0 μg/m3 (33) 33.0
 
May 23, 2019, 2 p.m. 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 7.0 μg/m3 (6) 7.0 μg/m3 (29) 29.0
 
May 23, 2019, 1 p.m. 2.1 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 24.0 μg/m3 (22) 5.0 μg/m3 (21) 22.0
 
May 23, 2019, noon 1.7 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 11.0 ppb (8) N/A 9.0 μg/m3 (8) 1.8 μg/m3 (8) 8.0
 
May 23, 2019, 11 a.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 9.0 ppb (7) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 7.0
 
May 23, 2019, 10 a.m. 1.7 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 11.0 ppb (8) N/A 7.0 μg/m3 (6) 2.3 μg/m3 (10) 10.0
 
May 23, 2019, 9 a.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 15.0 ppb (12) N/A 3.0 μg/m3 (3) 4.1 μg/m3 (17) 17.0
 
May 23, 2019, 8 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 4.0 μg/m3 (4) 3.8 μg/m3 (16) 16.0
 
May 23, 2019, 7 a.m. 2.3 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 9.0 μg/m3 (8) 3.9 μg/m3 (16) 18.0
 
May 23, 2019, 6 a.m. 2.6 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 10.0 μg/m3 (9) 2.0 μg/m3 (8) 27.0
 
May 23, 2019, 5 a.m. 2.3 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 9.0 μg/m3 (8) 0.0 μg/m3 (0) 28.0
 
May 23, 2019, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 11.0 μg/m3 (10) -1.1 μg/m3 (0) 35.0
 
May 23, 2019, 3 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 8.0 μg/m3 (7) 0.5 μg/m3 (2) 38.0
 
May 23, 2019, 2 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 20.0 μg/m3 (18) 3.5 μg/m3 (15) 33.0
 
May 23, 2019, 1 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 23.0 μg/m3 (21) 4.1 μg/m3 (17) 30.0
 
May 23, 2019, midnight 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 14.0 μg/m3 (13) 4.3 μg/m3 (18) 32.0
 
May 22, 2019, 11 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 35.0
 
May 22, 2019, 10 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A 4.0 μg/m3 (4) 3.4 μg/m3 (14) 35.0
 
May 22, 2019, 9 p.m. 1.7 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 2.0 μg/m3 (2) 2.5 μg/m3 (10) 33.0
 
May 22, 2019, 8 p.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 32.0 μg/m3 (29) 1.7 μg/m3 (7) 34.0
 
May 22, 2019, 7 p.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 24.0 μg/m3 (22) 1.9 μg/m3 (8) 35.0
 
May 22, 2019, 6 p.m. 2.0 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 17.0 μg/m3 (15) 3.0 μg/m3 (12) 28.0
 
May 22, 2019, 5 p.m. 2.7 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 17.0 μg/m3 (15) 4.1 μg/m3 (17) 24.0
 
May 22, 2019, 4 p.m. 3.4 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 19.0 μg/m3 (17) 4.9 μg/m3 (20) 22.0
 
May 22, 2019, 3 p.m. 4.1 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 17.0 μg/m3 (15) 4.8 μg/m3 (20) 20.0
 
May 22, 2019, 2 p.m. 5.2 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 17.0 μg/m3 (15) 1.0 μg/m3 (4) 18.0
 
May 22, 2019, 1 p.m. 5.8 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 16.0 μg/m3 (15) 2.2 μg/m3 (9) 17.0
 
May 22, 2019, noon 5.4 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 19.0 μg/m3 (17) 5.5 μg/m3 (23) 23.0
 
May 22, 2019, 11 a.m. 5.1 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 13.0 μg/m3 (12) 6.7 μg/m3 (28) 28.0
 
May 22, 2019, 10 a.m. 4.9 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 20.0 μg/m3 (18) 6.8 μg/m3 (28) 28.0
 
May 22, 2019, 9 a.m. 5.9 ppb (5) 0.1 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 18.0 μg/m3 (16) 4.8 μg/m3 (20) 20.0
 
May 22, 2019, 8 a.m. 6.0 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 21.0 μg/m3 (19) 2.5 μg/m3 (10) 20.0
 
May 22, 2019, 7 a.m. 5.7 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 17.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
May 22, 2019, 6 a.m. 5.5 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 18.0 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
May 22, 2019, 5 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 15.0 μg/m3 (14) 1.4 μg/m3 (6) 25.0
 
May 22, 2019, 4 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 13.0 μg/m3 (12) 3.0 μg/m3 (12) 28.0
 
May 22, 2019, 3 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 13.0 μg/m3 (12) 2.3 μg/m3 (10) 30.0
 
May 22, 2019, 2 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 16.0 μg/m3 (15) 2.7 μg/m3 (11) 32.0
 
May 22, 2019, 1 a.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 10.0 μg/m3 (9) 5.7 μg/m3 (24) 32.0
 
May 22, 2019, midnight 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 10.0 μg/m3 (9) 5.8 μg/m3 (24) 33.0
 
May 21, 2019, 11 p.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 11.0 μg/m3 (10) 4.8 μg/m3 (20) 32.0
 
May 21, 2019, 10 p.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A -1.0 μg/m3 (0) 6.7 μg/m3 (28) 33.0
 
May 21, 2019, 9 p.m. 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 2.0 μg/m3 (2) 7.3 μg/m3 (30) 34.0
 
May 21, 2019, 8 p.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 6.0 μg/m3 (5) 9.3 μg/m3 (39) 39.0
 
May 21, 2019, 7 p.m. 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 7.0 μg/m3 (6) 12.7 μg/m3 (51) 51.0
 
May 21, 2019, 6 p.m. 2.5 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 7.0 μg/m3 (6) 8.5 μg/m3 (35) 35.0
 
May 21, 2019, 5 p.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 9.0 μg/m3 (8) 9.5 μg/m3 (40) 40.0
 
May 21, 2019, 4 p.m. 2.9 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 7.0 μg/m3 (6) 8.0 μg/m3 (33) 33.0
 
May 21, 2019, 3 p.m. 4.5 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 6.0 μg/m3 (5) 3.2 μg/m3 (13) 22.0
 
May 21, 2019, 2 p.m. 5.5 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 19.0
 
May 21, 2019, 1 p.m. 5.0 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 5.0 μg/m3 (5) 3.6 μg/m3 (15) 18.0
 
May 21, 2019, noon 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 7.0 μg/m3 (6) 2.9 μg/m3 (12) 16.0
 
May 21, 2019, 11 a.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 3.0 μg/m3 (3) 2.2 μg/m3 (9) 14.0
 
May 21, 2019, 10 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 6.0 μg/m3 (5) 4.5 μg/m3 (19) 19.0
 
May 21, 2019, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 25.0 ppb (19) N/A 4.0 μg/m3 (4) 8.0 μg/m3 (33) 33.0
 
May 21, 2019, 8 a.m. 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 3.0 μg/m3 (3) 4.6 μg/m3 (19) 22.0
 
May 21, 2019, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 6.0 μg/m3 (5) -0.9 μg/m3 (0) 24.0
 
May 21, 2019, 6 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 8.0 μg/m3 (7) -0.8 μg/m3 (0) 24.0
 
May 21, 2019, 5 a.m. 1.5 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 10.0 μg/m3 (9) 0.0 μg/m3 (0) 26.0
 
May 21, 2019, 4 a.m. 1.5 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 11.0 μg/m3 (10) 0.3 μg/m3 (1) 28.0
 
May 21, 2019, 3 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 13.0 μg/m3 (12) 2.3 μg/m3 (10) 29.0
 
May 21, 2019, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 7.0 μg/m3 (6) 4.9 μg/m3 (20) 31.0
 
May 21, 2019, 1 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 32.0
 
May 21, 2019, midnight 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 9.0 μg/m3 (8) 6.7 μg/m3 (28) 33.0
 
May 20, 2019, 11 p.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 9.0 μg/m3 (8) 8.5 μg/m3 (35) 35.0
 
May 20, 2019, 10 p.m. 0.9 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) 4.6 μg/m3 (19) 32.0
 
May 20, 2019, 9 p.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 10.0 μg/m3 (9) 5.7 μg/m3 (24) 35.0
 
May 20, 2019, 8 p.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 8.0 μg/m3 (7) 2.5 μg/m3 (10) 34.0
 
May 20, 2019, 7 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 6.0 μg/m3 (5) 2.5 μg/m3 (10) 34.0
 
May 20, 2019, 6 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 7.0 μg/m3 (6) 6.0 μg/m3 (25) 32.0
 
May 20, 2019, 5 p.m. 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 6.0 μg/m3 (5) 9.6 μg/m3 (40) 40.0
 
May 20, 2019, 4 p.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 7.0 μg/m3 (6) 8.8 μg/m3 (37) 37.0
 
May 20, 2019, 3 p.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 2.0 μg/m3 (2) 7.4 μg/m3 (31) 31.0
 
May 20, 2019, 2 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 2.0 μg/m3 (2) 1.3 μg/m3 (5) 23.0
 
May 20, 2019, 1 p.m. 4.7 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 5.0 μg/m3 (5) 0.4 μg/m3 (2) 14.0
 
May 20, 2019, noon 3.0 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 10.0 ppb (8) N/A 8.0 μg/m3 (7) 3.8 μg/m3 (16) 16.0
 
May 20, 2019, 11 a.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 7.0 ppb (5) N/A 5.0 μg/m3 (5) 5.8 μg/m3 (24) 24.0
 
May 20, 2019, 10 a.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 12.0 ppb (9) N/A 5.0 μg/m3 (5) 2.1 μg/m3 (9) 9.0
 
May 20, 2019, 9 a.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 12.0 ppb (9) N/A 6.0 μg/m3 (5) 2.8 μg/m3 (12) 12.0
 
May 20, 2019, 8 a.m. 1.7 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 12.0 ppb (9) N/A 11.0 μg/m3 (10) 3.3 μg/m3 (14) 14.0
 
May 20, 2019, 7 a.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 14.0 ppb (11) N/A 7.0 μg/m3 (6) 1.1 μg/m3 (5) 11.0
 
May 20, 2019, 6 a.m. 1.7 ppb (2) 0.1 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) 1.9 μg/m3 (8) 15.0
 
May 20, 2019, 5 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 11.0 μg/m3 (10) 0.5 μg/m3 (2) 19.0
 
May 20, 2019, 4 a.m. 1.5 ppb (1) 0.0 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) 1.6 μg/m3 (7) 23.0
 
May 20, 2019, 3 a.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 16.0 μg/m3 (15) 2.4 μg/m3 (10) 23.0
 
May 20, 2019, 2 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 15.0 μg/m3 (14) 2.8 μg/m3 (12) 22.0
 
May 20, 2019, 1 a.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 8.0 μg/m3 (7) 5.3 μg/m3 (22) 29.0
 
May 20, 2019, midnight 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 6.0 μg/m3 (5) 7.3 μg/m3 (30) 32.0
 
May 19, 2019, 11 p.m. 1.1 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 5.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
May 19, 2019, 10 p.m. 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 3.0 μg/m3 (3) 6.5 μg/m3 (27) 33.0
 
May 19, 2019, 9 p.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 3.0 μg/m3 (3) 5.2 μg/m3 (22) 31.0
 
May 19, 2019, 8 p.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 29.0
 
May 19, 2019, 7 p.m. 1.2 ppb (1) 0.2 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) 3.4 μg/m3 (14) 28.0
 
May 19, 2019, 6 p.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 4.0 μg/m3 (4) 2.5 μg/m3 (10) 27.0
 
May 19, 2019, 5 p.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 0.0 μg/m3 (0) 2.9 μg/m3 (12) 25.0
 
May 19, 2019, 4 p.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 4.0 μg/m3 (4) 2.6 μg/m3 (11) 23.0
 
May 19, 2019, 3 p.m. 2.9 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) N/A 6.0 μg/m3 (5) 5.3 μg/m3 (22) 22.0
 
May 19, 2019, 2 p.m. 4.1 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (19) N/A 7.0 μg/m3 (6) 8.4 μg/m3 (35) 35.0
 
May 19, 2019, 1 p.m. 4.4 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 7.0 μg/m3 (6) 4.4 μg/m3 (18) 18.0
 
May 19, 2019, noon 4.5 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 13.0 μg/m3 (12) 2.4 μg/m3 (10) 14.0
 
May 19, 2019, 11 a.m. 4.7 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 13.0 μg/m3 (12) 4.9 μg/m3 (20) 20.0
 
May 19, 2019, 10 a.m. 4.3 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 11.0 μg/m3 (10) 6.2 μg/m3 (26) 26.0
 
May 19, 2019, 9 a.m. 4.3 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 13.0 μg/m3 (12) 4.8 μg/m3 (20) 20.0
 
May 19, 2019, 8 a.m. 4.7 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 10.0 μg/m3 (9) 7.7 μg/m3 (32) 32.0
 
May 19, 2019, 7 a.m. 4.4 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 17.0 ppb (13) N/A 8.0 μg/m3 (7) 1.4 μg/m3 (6) 13.0
 
May 19, 2019, 6 a.m. 3.2 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 14.0 μg/m3 (13) -0.4 μg/m3 (0) 13.0
 
May 19, 2019, 5 a.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 16.0 μg/m3 (15) 0.0 μg/m3 (0) 15.0
 
May 19, 2019, 4 a.m. 2.3 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 16.0 μg/m3 (15) 3.3 μg/m3 (14) 15.0
 
May 19, 2019, 3 a.m. 2.9 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (19) N/A 18.0 μg/m3 (16) 3.6 μg/m3 (15) 19.0
 
May 19, 2019, 2 a.m. 2.5 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 16.0 μg/m3 (15) 1.3 μg/m3 (5) 25.0
 
May 19, 2019, 1 a.m. 2.4 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 17.0 μg/m3 (15) 3.4 μg/m3 (14) 25.0
 
May 19, 2019, midnight 2.0 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 12.0 μg/m3 (11) 6.1 μg/m3 (25) 25.0
 
May 18, 2019, 11 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 11.0 μg/m3 (10) 6.1 μg/m3 (25) 26.0
 
May 18, 2019, 10 p.m. 1.5 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 10.0 μg/m3 (9) 2.2 μg/m3 (9) 25.0
 
May 18, 2019, 9 p.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 13.0 μg/m3 (12) 2.5 μg/m3 (10) 23.0
 
May 18, 2019, 8 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 5.0 μg/m3 (5) 2.8 μg/m3 (12) 22.0
 
May 18, 2019, 7 p.m. 1.9 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 8.0 μg/m3 (7) 4.6 μg/m3 (19) 20.0
 
May 18, 2019, 6 p.m. 1.6 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 25.0 ppb (19) N/A 7.0 μg/m3 (6) 2.9 μg/m3 (12) 19.0
 
May 18, 2019, 5 p.m. 2.3 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 6.0 μg/m3 (5) 2.3 μg/m3 (10) 17.0
 
May 18, 2019, 4 p.m. 3.1 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 3.0 μg/m3 (3) 2.6 μg/m3 (11) 17.0
 
May 18, 2019, 3 p.m. 3.4 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 5.0 μg/m3 (5) -1.3 μg/m3 (0) 16.0
 
May 18, 2019, 2 p.m. 3.7 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 6.0 μg/m3 (5) -0.8 μg/m3 (0) 18.0
 
May 18, 2019, 1 p.m. 2.7 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 6.0 μg/m3 (5) 0.2 μg/m3 (1) 22.0
 
May 18, 2019, noon 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A -1.0 μg/m3 (0) 2.2 μg/m3 (9) 25.0
 
May 18, 2019, 11 a.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 5.0 μg/m3 (5) 3.5 μg/m3 (15) 25.0
 
May 18, 2019, 10 a.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 4.0 μg/m3 (4) 0.6 μg/m3 (2) 25.0
 
May 18, 2019, 9 a.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 4.0 μg/m3 (4) 0.4 μg/m3 (2) 25.0
 
May 18, 2019, 8 a.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 4.0 μg/m3 (4) 5.9 μg/m3 (25) 25.0
 
May 18, 2019, 7 a.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 8.0 μg/m3 (7) 7.3 μg/m3 (30) 30.0
 
May 18, 2019, 6 a.m. 2.7 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 6.0 μg/m3 (5) 2.1 μg/m3 (9) 26.0
 
May 18, 2019, 5 a.m. 2.5 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 5.0 μg/m3 (5) 3.4 μg/m3 (14) 24.0
 
May 18, 2019, 4 a.m. 2.2 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 26.0
 
May 18, 2019, 3 a.m. 2.4 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 5.0 μg/m3 (5) 1.6 μg/m3 (7) 28.0
 
May 18, 2019, 2 a.m. 2.2 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 38.0 ppb (29) N/A -1.0 μg/m3 (0) 1.2 μg/m3 (5) 29.0
 
May 18, 2019, 1 a.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 2.0 μg/m3 (2) 1.6 μg/m3 (7) 29.0
 
May 18, 2019, midnight 2.0 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 9.0 μg/m3 (8) 2.2 μg/m3 (9) 27.0
 
May 17, 2019, 11 p.m. 2.4 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 3.0 μg/m3 (3) 3.4 μg/m3 (14) 26.0
 
May 17, 2019, 10 p.m. 2.0 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 2.0 μg/m3 (2) 2.5 μg/m3 (10) 31.0
 
May 17, 2019, 9 p.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 4.0 μg/m3 (4) 2.1 μg/m3 (9) 28.0
 
May 17, 2019, 8 p.m. 2.4 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 3.0 μg/m3 (3) 2.9 μg/m3 (12) 26.0
 
May 17, 2019, 7 p.m. 2.2 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 6.0 μg/m3 (5) 6.2 μg/m3 (26) 27.0
 
May 17, 2019, 6 p.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 2.0 μg/m3 (2) 7.3 μg/m3 (30) 30.0
 
May 17, 2019, 5 p.m. 3.7 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 20.0 μg/m3 (18) 8.0 μg/m3 (33) 33.0
 
May 17, 2019, 4 p.m. 4.2 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 7.0 μg/m3 (6) 1.8 μg/m3 (8) 20.0
 
May 17, 2019, 3 p.m. 3.1 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 2.4 μg/m3 (10) 26.0
 
May 17, 2019, 2 p.m. 3.5 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 1.0 μg/m3 (1) 3.5 μg/m3 (15) 27.0
 
May 17, 2019, 1 p.m. 4.4 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 33.0 ppb (25) N/A N/A 5.8 μg/m3 (24) 25.0
 
May 17, 2019, noon 3.9 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 8.2 μg/m3 (34) 34.0
 
May 17, 2019, 11 a.m. 2.6 ppb (2) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 85.0 μg/m3 (65) 3.0 μg/m3 (12) 65.0
 
May 17, 2019, 10 a.m. 3.6 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 21.0 μg/m3 (19) 8.3 μg/m3 (35) 35.0
 
May 17, 2019, 9 a.m. 4.7 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 25.0 μg/m3 (23) 4.3 μg/m3 (18) 25.0
 
May 17, 2019, 8 a.m. 2.5 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 12.0 μg/m3 (11) 6.9 μg/m3 (29) 30.0
 
May 17, 2019, 7 a.m. 3.6 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 13.0 μg/m3 (12) 6.3 μg/m3 (26) 29.0
 
May 17, 2019, 6 a.m. 3.7 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 19.0 μg/m3 (17) 7.6 μg/m3 (32) 32.0
 
May 17, 2019, 5 a.m. 2.5 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 12.0 μg/m3 (11) 10.3 μg/m3 (43) 43.0
 
May 17, 2019, 4 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 19.0 μg/m3 (17) 1.9 μg/m3 (8) 31.0
 
May 17, 2019, 3 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 19.0 μg/m3 (17) 1.8 μg/m3 (8) 32.0
 
May 17, 2019, 2 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 15.0 μg/m3 (14) 3.6 μg/m3 (15) 33.0
 
May 17, 2019, 1 a.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A 13.0 μg/m3 (12) 7.2 μg/m3 (30) 34.0