AQSQID: 381010003

Site Name: Ryder

Location: Maryfield, ND

Reporting: True, Located: True

Current AQI: 13.0

Maryfield ND, US: 49.940861, -101.571583

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 2.0 μg/m3 (2) N/A 13.0
 
Sept. 20, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 0.0 μg/m3 (0) 0.0 μg/m3 (0) 15.0
 
Sept. 20, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 9.0 μg/m3 (8) 0.6 μg/m3 (2) 20.0
 
Sept. 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) 29.0 ppb (22) N/A 4.0 μg/m3 (4) N/A 22.0
 
Sept. 20, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 0.0 μg/m3 (0) N/A 26.0
 
Sept. 20, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) N/A -4.0 μg/m3 (0) N/A 22.0
 
Sept. 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) 19.0 ppb (15) N/A 1.0 μg/m3 (1) 3.8 μg/m3 (16) 16.0
 
Sept. 20, 2019, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 11.0 μg/m3 (10) 2.8 μg/m3 (12) 15.0
 
Sept. 20, 2019, 4 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 14.0 μg/m3 (13) 1.4 μg/m3 (6) 14.0
 
Sept. 20, 2019, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 16.0
 
Sept. 20, 2019, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 9.0 μg/m3 (8) 7.7 μg/m3 (32) 32.0
 
Sept. 20, 2019, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 13.0 μg/m3 (12) 6.5 μg/m3 (27) 27.0
 
Sept. 20, 2019, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2019, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 11.0 μg/m3 (10) 3.4 μg/m3 (14) 18.0
 
Sept. 20, 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 10.0 μg/m3 (9) 4.2 μg/m3 (18) 19.0
 
Sept. 20, 2019, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (21) N/A 8.0 μg/m3 (7) 6.2 μg/m3 (26) 26.0
 
Sept. 20, 2019, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 7.0 μg/m3 (6) 2.5 μg/m3 (10) 22.0
 
Sept. 20, 2019, 6 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 9.0 μg/m3 (8) 2.6 μg/m3 (11) 23.0
 
Sept. 20, 2019, 5 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 12.0 μg/m3 (11) 3.5 μg/m3 (15) 24.0
 
Sept. 20, 2019, 4 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 8.0 μg/m3 (7) 5.4 μg/m3 (23) 24.0
 
Sept. 20, 2019, 3 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 8.0 μg/m3 (7) 8.4 μg/m3 (35) 35.0
 
Sept. 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) 31.0 ppb (24) N/A 10.0 μg/m3 (9) 10.1 μg/m3 (42) 42.0
 
Sept. 20, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 15.0 μg/m3 (14) 4.7 μg/m3 (20) 25.0
 
Sept. 20, 2019, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 18.0 μg/m3 (16) 2.9 μg/m3 (12) 28.0
 
Sept. 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) 39.0 ppb (30) N/A 14.0 μg/m3 (13) 3.9 μg/m3 (16) 30.0
 
Sept. 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) 41.0 ppb (32) N/A 13.0 μg/m3 (12) 2.7 μg/m3 (11) 32.0
 
Sept. 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) 41.0 ppb (32) N/A 11.0 μg/m3 (10) 4.9 μg/m3 (20) 32.0
 
Sept. 19, 2019, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 12.0 μg/m3 (11) 5.3 μg/m3 (22) 32.0
 
Sept. 19, 2019, 7 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 4.0 μg/m3 (4) 3.9 μg/m3 (16) 32.0
 
Sept. 19, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 9.0 μg/m3 (8) 4.6 μg/m3 (19) 29.0
 
Sept. 19, 2019, 5 p.m. 1.0 ppb (1) 0.0 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) 19.2 μg/m3 (65) 65.0
 
Sept. 19, 2019, 4 p.m. 1.0 ppb (1) 0.0 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) 18.0 μg/m3 (63) 63.0
 
Sept. 19, 2019, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 7.0 μg/m3 (6) 7.8 μg/m3 (32) 32.0
 
Sept. 19, 2019, 2 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 10.0 μg/m3 (9) 5.2 μg/m3 (22) 22.0
 
Sept. 19, 2019, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 12.0 μg/m3 (11) 3.3 μg/m3 (14) 15.0
 
Sept. 19, 2019, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 11.0 μg/m3 (10) 0.6 μg/m3 (2) 14.0
 
Sept. 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) 17.0 ppb (13) N/A 8.0 μg/m3 (7) -2.7 μg/m3 (0) 13.0
 
Sept. 19, 2019, 10 a.m. 2.0 ppb (2) 0.0 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) N/A 8.0
 
Sept. 19, 2019, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 12.0 μg/m3 (11) N/A 15.0
 
Sept. 19, 2019, 8 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 1.0 μg/m3 (1) N/A 20.0
 
Sept. 19, 2019, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 7.0 μg/m3 (6) 4.2 μg/m3 (18) 18.0
 
Sept. 19, 2019, 6 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 5.0 μg/m3 (5) 7.4 μg/m3 (31) 31.0
 
Sept. 19, 2019, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 7.0 μg/m3 (6) 6.9 μg/m3 (29) 29.0
 
Sept. 19, 2019, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 9.0 μg/m3 (8) 8.5 μg/m3 (35) 35.0
 
Sept. 19, 2019, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 7.0 μg/m3 (6) 8.7 μg/m3 (36) 36.0
 
Sept. 19, 2019, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 18.0 μg/m3 (16) 6.2 μg/m3 (26) 26.0
 
Sept. 19, 2019, 1 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 12.0 μg/m3 (11) 5.3 μg/m3 (22) 22.0
 
Sept. 19, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 13.0 μg/m3 (12) 5.0 μg/m3 (21) 22.0
 
Sept. 18, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 15.0 μg/m3 (14) 5.6 μg/m3 (23) 25.0
 
Sept. 18, 2019, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 13.0 μg/m3 (12) 8.8 μg/m3 (37) 37.0
 
Sept. 18, 2019, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 8.0 μg/m3 (7) 4.7 μg/m3 (20) 30.0
 
Sept. 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) 39.0 ppb (30) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 30.0
 
Sept. 18, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 8.0 μg/m3 (7) 7.1 μg/m3 (30) 30.0
 
Sept. 18, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 9.0 μg/m3 (8) 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 5 p.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 13.0 μg/m3 (12) 6.8 μg/m3 (28) 28.0
 
Sept. 18, 2019, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 9.0 μg/m3 (8) 4.2 μg/m3 (18) 18.0
 
Sept. 18, 2019, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 10.0 μg/m3 (9) 5.1 μg/m3 (21) 21.0
 
Sept. 18, 2019, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 9.0 μg/m3 (8) 1.9 μg/m3 (8) 15.0
 
Sept. 18, 2019, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 11.0 μg/m3 (10) 0.9 μg/m3 (4) 18.0
 
Sept. 18, 2019, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 9.0 μg/m3 (8) 2.9 μg/m3 (12) 26.0
 
Sept. 18, 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 1.0 μg/m3 (1) 6.0 μg/m3 (25) 32.0
 
Sept. 18, 2019, 9 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 5.0 μg/m3 (5) 6.5 μg/m3 (27) 27.0
 
Sept. 18, 2019, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 5.0 μg/m3 (5) 4.9 μg/m3 (20) 20.0
 
Sept. 18, 2019, 7 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) 1.4 μg/m3 (6) 19.0
 
Sept. 18, 2019, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 14.0 μg/m3 (13) 2.4 μg/m3 (10) 20.0
 
Sept. 18, 2019, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 24.0
 
Sept. 18, 2019, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 4.0 μg/m3 (4) 6.6 μg/m3 (28) 28.0
 
Sept. 18, 2019, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A -1.0 μg/m3 (0) 7.5 μg/m3 (31) 31.0
 
Sept. 18, 2019, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 5.0 μg/m3 (5) 11.7 μg/m3 (49) 49.0
 
Sept. 18, 2019, 1 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 19.0 μg/m3 (17) 9.1 μg/m3 (38) 38.0
 
Sept. 18, 2019, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) N/A 20.0 μg/m3 (18) 13.4 μg/m3 (53) 53.0
 
Sept. 17, 2019, 11 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 28.0 μg/m3 (25) 12.7 μg/m3 (51) 51.0
 
Sept. 17, 2019, 10 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 21.0 μg/m3 (19) 9.3 μg/m3 (39) 39.0
 
Sept. 17, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 19.0 μg/m3 (17) 12.1 μg/m3 (50) 50.0
 
Sept. 17, 2019, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 22.0 μg/m3 (20) 10.1 μg/m3 (42) 42.0
 
Sept. 17, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 18.0 μg/m3 (16) 9.8 μg/m3 (41) 41.0
 
Sept. 17, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 17.0 μg/m3 (15) 10.1 μg/m3 (42) 42.0
 
Sept. 17, 2019, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 17.0 μg/m3 (15) 12.7 μg/m3 (51) 51.0
 
Sept. 17, 2019, 4 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 17.0 μg/m3 (15) 8.7 μg/m3 (36) 36.0
 
Sept. 17, 2019, 3 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) N/A 17.0 μg/m3 (15) 12.2 μg/m3 (50) 50.0
 
Sept. 17, 2019, 2 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 16.0 μg/m3 (15) 9.3 μg/m3 (39) 39.0
 
Sept. 17, 2019, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 19.0 μg/m3 (17) 12.9 μg/m3 (52) 52.0
 
Sept. 17, 2019, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 14.0 μg/m3 (13) 12.3 μg/m3 (51) 51.0
 
Sept. 17, 2019, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 12.0 μg/m3 (11) 10.8 μg/m3 (45) 45.0
 
Sept. 17, 2019, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 12.0 μg/m3 (11) 11.9 μg/m3 (50) 50.0
 
Sept. 17, 2019, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 11.0 μg/m3 (10) 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 11.0 μg/m3 (10) 10.8 μg/m3 (45) 45.0
 
Sept. 17, 2019, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 12.0 μg/m3 (11) 8.7 μg/m3 (36) 36.0
 
Sept. 17, 2019, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 12.0 μg/m3 (11) 11.1 μg/m3 (46) 46.0
 
Sept. 17, 2019, 5 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 13.0 μg/m3 (12) 10.9 μg/m3 (45) 45.0
 
Sept. 17, 2019, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 12.0 μg/m3 (11) 8.9 μg/m3 (37) 37.0
 
Sept. 17, 2019, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 12.0 μg/m3 (11) 5.9 μg/m3 (25) 25.0
 
Sept. 17, 2019, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 11.0 μg/m3 (10) 9.3 μg/m3 (39) 39.0
 
Sept. 17, 2019, 1 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 17.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2019, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 25.0 μg/m3 (23) 6.6 μg/m3 (28) 28.0
 
Sept. 16, 2019, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 25.0 μg/m3 (23) 9.5 μg/m3 (40) 40.0
 
Sept. 16, 2019, 10 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 51.0 ppb (39) N/A 19.0 μg/m3 (17) 6.2 μg/m3 (26) 39.0
 
Sept. 16, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 49.0 ppb (38) N/A 11.0 μg/m3 (10) 4.8 μg/m3 (20) 38.0
 
Sept. 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) 44.0 ppb (34) N/A 7.0 μg/m3 (6) 4.5 μg/m3 (19) 34.0
 
Sept. 16, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 14.0 μg/m3 (13) 5.8 μg/m3 (24) 30.0
 
Sept. 16, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 14.0 μg/m3 (13) 6.6 μg/m3 (28) 31.0
 
Sept. 16, 2019, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 9.0 μg/m3 (8) 7.7 μg/m3 (32) 32.0
 
Sept. 16, 2019, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 11.0 μg/m3 (10) 4.7 μg/m3 (20) 23.0
 
Sept. 16, 2019, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 12.0 μg/m3 (11) 1.6 μg/m3 (7) 17.0
 
Sept. 16, 2019, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 13.0 μg/m3 (12) 2.4 μg/m3 (10) 12.0
 
Sept. 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) 13.0 ppb (10) N/A 10.0 μg/m3 (9) 2.0 μg/m3 (8) 10.0
 
Sept. 16, 2019, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 15.0 ppb (12) N/A 7.0 μg/m3 (6) 2.3 μg/m3 (10) 12.0
 
Sept. 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) 15.0 ppb (12) N/A 7.0 μg/m3 (6) 3.5 μg/m3 (15) 15.0
 
Sept. 16, 2019, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 7.0 μg/m3 (6) 3.6 μg/m3 (15) 15.0
 
Sept. 16, 2019, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 14.0
 
Sept. 16, 2019, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 5.0 μg/m3 (5) 3.4 μg/m3 (14) 14.0
 
Sept. 16, 2019, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 7.0 μg/m3 (6) 5.2 μg/m3 (22) 22.0
 
Sept. 16, 2019, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 7.0 μg/m3 (6) 3.3 μg/m3 (14) 15.0
 
Sept. 16, 2019, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 6.0 μg/m3 (5) 3.4 μg/m3 (14) 16.0
 
Sept. 16, 2019, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 9.0 μg/m3 (8) 6.5 μg/m3 (27) 27.0
 
Sept. 16, 2019, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (21) N/A 10.0 μg/m3 (9) 5.3 μg/m3 (22) 22.0
 
Sept. 16, 2019, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 7.0 μg/m3 (6) 1.3 μg/m3 (5) 24.0
 
Sept. 16, 2019, 1 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 11.0 μg/m3 (10) 1.4 μg/m3 (6) 22.0
 
Sept. 16, 2019, midnight 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 33.0 ppb (25) N/A 14.0 μg/m3 (13) 0.3 μg/m3 (1) 25.0
 
Sept. 15, 2019, 11 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 39.0 ppb (30) N/A 14.0 μg/m3 (13) 2.3 μg/m3 (10) 30.0
 
Sept. 15, 2019, 10 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 4.0 ppb (6) 40.0 ppb (31) N/A 16.0 μg/m3 (15) 4.1 μg/m3 (17) 31.0
 
Sept. 15, 2019, 9 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 43.0 ppb (33) N/A 11.0 μg/m3 (10) 3.6 μg/m3 (15) 33.0
 
Sept. 15, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 6.0 μg/m3 (5) 3.5 μg/m3 (15) 33.0
 
Sept. 15, 2019, 7 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 3.0 ppb (4) 38.0 ppb (29) N/A 11.0 μg/m3 (10) 2.6 μg/m3 (11) 29.0
 
Sept. 15, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 11.0 μg/m3 (10) 4.9 μg/m3 (20) 29.0
 
Sept. 15, 2019, 5 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 4.0 μg/m3 (4) 9.2 μg/m3 (38) 38.0
 
Sept. 15, 2019, 4 p.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 1.0 μg/m3 (1) 21.3 μg/m3 (70) 70.0
 
Sept. 15, 2019, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 18.0
 
Sept. 15, 2019, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 10.0 μg/m3 (9) 0.6 μg/m3 (2) 14.0
 
Sept. 15, 2019, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 10.0 μg/m3 (9) -0.3 μg/m3 (0) 14.0
 
Sept. 15, 2019, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 8.0 μg/m3 (7) 1.4 μg/m3 (6) 14.0
 
Sept. 15, 2019, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 6.0 μg/m3 (5) 0.9 μg/m3 (4) 15.0
 
Sept. 15, 2019, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 6.0 μg/m3 (5) 1.5 μg/m3 (6) 16.0
 
Sept. 15, 2019, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 7.0 μg/m3 (6) 0.2 μg/m3 (1) 16.0
 
Sept. 15, 2019, 8 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 25.0 ppb (19) N/A 6.0 μg/m3 (5) -0.2 μg/m3 (0) 19.0
 
Sept. 15, 2019, 7 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 5.0 μg/m3 (5) 0.1 μg/m3 (0) 21.0
 
Sept. 15, 2019, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 6.0 μg/m3 (5) -0.6 μg/m3 (0) 18.0
 
Sept. 15, 2019, 5 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) N/A 5.0 μg/m3 (5) 0.3 μg/m3 (1) 19.0
 
Sept. 15, 2019, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 5.0 μg/m3 (5) 1.5 μg/m3 (6) 23.0
 
Sept. 15, 2019, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 7.0 μg/m3 (6) -0.7 μg/m3 (0) 22.0
 
Sept. 15, 2019, 2 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 6.0 μg/m3 (5) -2.1 μg/m3 (0) 25.0
 
Sept. 15, 2019, 1 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 6.0 μg/m3 (5) 1.4 μg/m3 (6) 27.0
 
Sept. 15, 2019, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 6.0 μg/m3 (5) 2.9 μg/m3 (12) 28.0
 
Sept. 14, 2019, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 10.0 μg/m3 (9) -0.6 μg/m3 (0) 31.0
 
Sept. 14, 2019, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 5.0 μg/m3 (5) 0.1 μg/m3 (0) 33.0
 
Sept. 14, 2019, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (32) N/A 4.0 μg/m3 (4) 2.1 μg/m3 (9) 32.0
 
Sept. 14, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 11.0 μg/m3 (10) 1.9 μg/m3 (8) 32.0
 
Sept. 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) 39.0 ppb (30) N/A 13.0 μg/m3 (12) 2.2 μg/m3 (9) 30.0
 
Sept. 14, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 9.0 μg/m3 (8) 6.2 μg/m3 (26) 28.0
 
Sept. 14, 2019, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 3.0 μg/m3 (3) 10.5 μg/m3 (44) 44.0
 
Sept. 14, 2019, 4 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 5.0 μg/m3 (5) 14.4 μg/m3 (55) 55.0
 
Sept. 14, 2019, 3 p.m. 4.0 ppb (4) 1.0 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) 1.9 μg/m3 (8) 18.0
 
Sept. 14, 2019, 2 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 8.0 μg/m3 (7) 2.5 μg/m3 (10) 12.0
 
Sept. 14, 2019, 1 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 11.0 ppb (8) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 16.0
 
Sept. 14, 2019, noon 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 10.0 ppb (8) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 17.0
 
Sept. 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) 8.0 ppb (6) N/A 3.0 μg/m3 (3) 5.2 μg/m3 (22) 22.0
 
Sept. 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) 10.0 ppb (8) N/A 5.0 μg/m3 (5) 4.4 μg/m3 (18) 18.0
 
Sept. 14, 2019, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 11.0 ppb (8) N/A 4.0 μg/m3 (4) 2.1 μg/m3 (9) 9.0
 
Sept. 14, 2019, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 13.0 ppb (10) N/A 5.0 μg/m3 (5) 2.7 μg/m3 (11) 11.0
 
Sept. 14, 2019, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 13.0 ppb (10) N/A 4.0 μg/m3 (4) 0.4 μg/m3 (2) 10.0
 
Sept. 14, 2019, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 5.0 μg/m3 (5) -4.7 μg/m3 (0) 13.0
 
Sept. 14, 2019, 5 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 5.0 μg/m3 (5) -3.3 μg/m3 (0) 13.0
 
Sept. 14, 2019, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 8.0 μg/m3 (7) -2.4 μg/m3 (0) 15.0
 
Sept. 14, 2019, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 5.0 μg/m3 (5) -1.5 μg/m3 (0) 18.0
 
Sept. 14, 2019, 2 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 5.0 μg/m3 (5) 1.4 μg/m3 (6) 19.0
 
Sept. 14, 2019, 1 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 6.0 μg/m3 (5) 2.5 μg/m3 (10) 21.0