AQSQID: 381010003

Site Name: Ryder

Location: Maryfield, ND

Reporting: True, Located: True

Current AQI: 22.0

Maryfield ND, US: 49.940861, -101.571583

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 16, 2019, 8 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 4.0 μg/m3 (4) 0.7 μg/m3 (3) 22.0
 
Jan. 16, 2019, 7 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 3.0 μg/m3 (3) 3.3 μg/m3 (14) 22.0
 
Jan. 16, 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 2.0 μg/m3 (2) 2.3 μg/m3 (10) 24.0
 
Jan. 16, 2019, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 3.0 μg/m3 (3) 2.7 μg/m3 (11) 25.0
 
Jan. 16, 2019, 4 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 3.0 μg/m3 (3) 3.9 μg/m3 (16) 25.0
 
Jan. 16, 2019, 3 p.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) 2.8 μg/m3 (12) 26.0
 
Jan. 16, 2019, 2 p.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 3.0 μg/m3 (3) 3.7 μg/m3 (15) 26.0
 
Jan. 16, 2019, 1 p.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 3.0 μg/m3 (3) 5.0 μg/m3 (21) 26.0
 
Jan. 16, 2019, noon 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 3.0 μg/m3 (3) 2.7 μg/m3 (11) 26.0
 
Jan. 16, 2019, 11 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 2.0 μg/m3 (2) 2.6 μg/m3 (11) 26.0
 
Jan. 16, 2019, 10 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 2.0 μg/m3 (2) 2.7 μg/m3 (11) 26.0
 
Jan. 16, 2019, 9 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 2.0 μg/m3 (2) 2.4 μg/m3 (10) 26.0
 
Jan. 16, 2019, 8 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 3.0 μg/m3 (3) 3.3 μg/m3 (14) 24.0
 
Jan. 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) 29.0 ppb (22) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 22.0
 
Jan. 16, 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 3.0 μg/m3 (3) N/A 23.0
 
Jan. 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) 27.0 ppb (21) N/A 5.0 μg/m3 (5) N/A 21.0
 
Jan. 16, 2019, 4 a.m. 2.0 ppb (2) 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) -0.1 μg/m3 (0) 19.0
 
Jan. 16, 2019, 3 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 4.0 μg/m3 (4) -4.7 μg/m3 (0) 18.0
 
Jan. 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) 25.0 ppb (19) N/A 4.0 μg/m3 (4) N/A 19.0
 
Jan. 16, 2019, 1 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) N/A 18.0
 
Jan. 16, 2019, midnight 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 6.0 μg/m3 (5) -3.7 μg/m3 (0) 18.0
 
Jan. 15, 2019, 11 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 6.0 μg/m3 (5) 2.4 μg/m3 (10) 19.0
 
Jan. 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) 25.0 ppb (19) N/A 6.0 μg/m3 (5) 6.2 μg/m3 (26) 26.0
 
Jan. 15, 2019, 9 p.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 7.0 μg/m3 (6) 3.4 μg/m3 (14) 18.0
 
Jan. 15, 2019, 8 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 7.0 μg/m3 (6) 4.5 μg/m3 (19) 19.0
 
Jan. 15, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 6.0 μg/m3 (5) 4.5 μg/m3 (19) 19.0
 
Jan. 15, 2019, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) N/A 4.0 μg/m3 (4) 5.4 μg/m3 (23) 23.0
 
Jan. 15, 2019, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) N/A 7.0 μg/m3 (6) 5.9 μg/m3 (25) 25.0
 
Jan. 15, 2019, 4 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 7.0 μg/m3 (6) 3.6 μg/m3 (15) 20.0
 
Jan. 15, 2019, 3 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (19) N/A 9.0 μg/m3 (8) 7.2 μg/m3 (30) 30.0
 
Jan. 15, 2019, 2 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 8.0 μg/m3 (7) 11.1 μg/m3 (46) 46.0
 
Jan. 15, 2019, 1 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 10.0 μg/m3 (9) 7.6 μg/m3 (32) 32.0
 
Jan. 15, 2019, noon 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 8.0 μg/m3 (7) 5.9 μg/m3 (25) 25.0
 
Jan. 15, 2019, 11 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 12.0 ppb (9) N/A 6.0 μg/m3 (5) 6.7 μg/m3 (28) 28.0
 
Jan. 15, 2019, 10 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 12.0 ppb (9) N/A 6.0 μg/m3 (5) 8.8 μg/m3 (37) 37.0
 
Jan. 15, 2019, 9 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 14.0 ppb (11) N/A 5.0 μg/m3 (5) 10.2 μg/m3 (42) 42.0
 
Jan. 15, 2019, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 5.0 μg/m3 (5) 10.4 μg/m3 (43) 43.0
 
Jan. 15, 2019, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 4.0 μg/m3 (4) 12.9 μg/m3 (52) 52.0
 
Jan. 15, 2019, 6 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 5.0 μg/m3 (5) 10.4 μg/m3 (43) 43.0
 
Jan. 15, 2019, 5 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (12) N/A 7.0 μg/m3 (6) 15.4 μg/m3 (57) 57.0
 
Jan. 15, 2019, 4 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 7.0 μg/m3 (6) 15.9 μg/m3 (58) 58.0
 
Jan. 15, 2019, 3 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 9.0 μg/m3 (8) 14.8 μg/m3 (56) 56.0
 
Jan. 15, 2019, 2 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 9.0 μg/m3 (8) 19.0 μg/m3 (65) 65.0
 
Jan. 15, 2019, 1 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 10.0 μg/m3 (9) 13.0 μg/m3 (52) 52.0
 
Jan. 15, 2019, midnight 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 12.0 μg/m3 (11) 10.0 μg/m3 (42) 42.0
 
Jan. 14, 2019, 11 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 9.0 μg/m3 (8) 10.1 μg/m3 (42) 42.0
 
Jan. 14, 2019, 10 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 9.0 μg/m3 (8) 9.5 μg/m3 (40) 40.0
 
Jan. 14, 2019, 9 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 9.0 μg/m3 (8) 11.2 μg/m3 (47) 47.0
 
Jan. 14, 2019, 8 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 9.0 μg/m3 (8) 9.3 μg/m3 (39) 39.0
 
Jan. 14, 2019, 7 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 6.0 μg/m3 (5) N/A 5.0
 
Jan. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) N/A 6.0
 
Jan. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A N/A 15.0
 
Jan. 14, 2019, 4 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) N/A 12.0 μg/m3 (11) 16.4 μg/m3 (59) 59.0
 
Jan. 14, 2019, 3 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 9.0 μg/m3 (8) 12.9 μg/m3 (52) 52.0
 
Jan. 14, 2019, 2 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (12) N/A 7.0 μg/m3 (6) 14.5 μg/m3 (55) 55.0
 
Jan. 14, 2019, 1 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (12) N/A 8.0 μg/m3 (7) 9.2 μg/m3 (38) 38.0
 
Jan. 14, 2019, noon 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (12) N/A 8.0 μg/m3 (7) 11.3 μg/m3 (47) 47.0
 
Jan. 14, 2019, 11 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 7.0 μg/m3 (6) 12.5 μg/m3 (51) 51.0
 
Jan. 14, 2019, 10 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 8.0 μg/m3 (7) 12.4 μg/m3 (51) 51.0
 
Jan. 14, 2019, 9 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 8.0 μg/m3 (7) 9.8 μg/m3 (41) 41.0
 
Jan. 14, 2019, 8 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 9.0 μg/m3 (8) 10.5 μg/m3 (44) 44.0
 
Jan. 14, 2019, 7 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 16.0 ppb (12) N/A 7.0 μg/m3 (6) 14.8 μg/m3 (56) 56.0
 
Jan. 14, 2019, 6 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 14.0 ppb (11) N/A 7.0 μg/m3 (6) 5.1 μg/m3 (21) 21.0
 
Jan. 14, 2019, 5 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 3.0 ppb (4) 13.0 ppb (10) N/A 7.0 μg/m3 (6) 5.8 μg/m3 (24) 24.0
 
Jan. 14, 2019, 4 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 3.0 ppb (4) 11.0 ppb (8) N/A 6.0 μg/m3 (5) 5.3 μg/m3 (22) 22.0
 
Jan. 14, 2019, 3 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 2.0 ppb (3) 13.0 ppb (10) N/A 6.0 μg/m3 (5) 7.7 μg/m3 (32) 32.0
 
Jan. 14, 2019, 2 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 14.0 ppb (11) N/A 5.0 μg/m3 (5) 7.2 μg/m3 (30) 30.0
 
Jan. 14, 2019, 1 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 14.0 ppb (11) N/A 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
Jan. 14, 2019, midnight 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 13.0 ppb (10) N/A 6.0 μg/m3 (5) 7.9 μg/m3 (33) 33.0
 
Jan. 13, 2019, 11 p.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 12.0 ppb (9) N/A 5.0 μg/m3 (5) 6.0 μg/m3 (25) 25.0
 
Jan. 13, 2019, 10 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 14.0 ppb (11) N/A 6.0 μg/m3 (5) 5.8 μg/m3 (24) 24.0
 
Jan. 13, 2019, 9 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 6.0 μg/m3 (5) 6.9 μg/m3 (29) 29.0
 
Jan. 13, 2019, 8 p.m. 7.0 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 6.0 μg/m3 (5) 2.9 μg/m3 (12) 13.0
 
Jan. 13, 2019, 7 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 4.0 μg/m3 (4) 5.1 μg/m3 (21) 21.0
 
Jan. 13, 2019, 6 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 3.0 μg/m3 (3) 10.5 μg/m3 (44) 44.0
 
Jan. 13, 2019, 5 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 5.0 μg/m3 (5) 7.4 μg/m3 (31) 31.0
 
Jan. 13, 2019, 4 p.m. 2.0 ppb (2) 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) 2.7 μg/m3 (11) 12.0
 
Jan. 13, 2019, 3 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 4.0 μg/m3 (4) 5.7 μg/m3 (24) 24.0
 
Jan. 13, 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 3.0 μg/m3 (3) 8.7 μg/m3 (36) 36.0
 
Jan. 13, 2019, 1 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 3.0 μg/m3 (3) 12.1 μg/m3 (50) 50.0
 
Jan. 13, 2019, noon 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 3.0 μg/m3 (3) 8.0 μg/m3 (33) 33.0
 
Jan. 13, 2019, 11 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 15.0 ppb (12) N/A 6.0 μg/m3 (5) 15.1 μg/m3 (57) 57.0
 
Jan. 13, 2019, 10 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 12.0 ppb (9) N/A 10.0 μg/m3 (9) 14.9 μg/m3 (56) 56.0
 
Jan. 13, 2019, 9 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 14.0 ppb (11) N/A 7.0 μg/m3 (6) 11.4 μg/m3 (48) 48.0
 
Jan. 13, 2019, 8 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 12.0 ppb (9) N/A 10.0 μg/m3 (9) 18.0 μg/m3 (63) 63.0
 
Jan. 13, 2019, 7 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A 4.0 ppb (6) 10.0 ppb (8) N/A 9.0 μg/m3 (8) 12.2 μg/m3 (50) 50.0
 
Jan. 13, 2019, 6 a.m. 11.0 ppb (10) 0.0 ppb (0) N/A 11.0 ppb (10) N/A 8.0 ppb (11) 10.0 ppb (8) N/A 6.0 μg/m3 (5) 10.8 μg/m3 (45) 45.0
 
Jan. 13, 2019, 5 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A 6.0 ppb (9) 12.0 ppb (9) N/A 6.0 μg/m3 (5) 12.3 μg/m3 (51) 51.0
 
Jan. 13, 2019, 4 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 4.0 ppb (6) 14.0 ppb (11) N/A 8.0 μg/m3 (7) 12.2 μg/m3 (50) 50.0
 
Jan. 13, 2019, 3 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 9.0 μg/m3 (8) 10.3 μg/m3 (43) 43.0
 
Jan. 13, 2019, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 9.0 μg/m3 (8) 19.1 μg/m3 (65) 65.0
 
Jan. 13, 2019, 1 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 13.0 μg/m3 (12) 6.4 μg/m3 (27) 27.0
 
Jan. 13, 2019, midnight 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 7.0 μg/m3 (6) 5.2 μg/m3 (22) 22.0
 
Jan. 12, 2019, 11 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 5.0 μg/m3 (5) 6.2 μg/m3 (26) 26.0
 
Jan. 12, 2019, 10 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 5.0 μg/m3 (5) 8.3 μg/m3 (35) 35.0
 
Jan. 12, 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 6.0 μg/m3 (5) 3.7 μg/m3 (15) 22.0
 
Jan. 12, 2019, 8 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 4.0 μg/m3 (4) 3.6 μg/m3 (15) 23.0
 
Jan. 12, 2019, 7 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 4.0 μg/m3 (4) 7.8 μg/m3 (32) 32.0
 
Jan. 12, 2019, 6 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 4.0 μg/m3 (4) 11.4 μg/m3 (48) 48.0
 
Jan. 12, 2019, 5 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 3.0 μg/m3 (3) 3.6 μg/m3 (15) 22.0
 
Jan. 12, 2019, 4 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 4.0 μg/m3 (4) 4.2 μg/m3 (18) 22.0
 
Jan. 12, 2019, 3 p.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 4.0 μg/m3 (4) 6.4 μg/m3 (27) 27.0
 
Jan. 12, 2019, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 5.0 μg/m3 (5) 7.1 μg/m3 (30) 30.0
 
Jan. 12, 2019, 1 p.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 6.0 μg/m3 (5) 7.4 μg/m3 (31) 31.0
 
Jan. 12, 2019, noon 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 5.0 μg/m3 (5) 11.6 μg/m3 (48) 48.0
 
Jan. 12, 2019, 11 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 5.0 μg/m3 (5) 5.9 μg/m3 (25) 25.0
 
Jan. 12, 2019, 10 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 5.0 μg/m3 (5) 4.7 μg/m3 (20) 22.0
 
Jan. 12, 2019, 9 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 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
Jan. 12, 2019, 8 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 6.0 μg/m3 (5) 8.6 μg/m3 (36) 36.0
 
Jan. 12, 2019, 7 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 6.0 μg/m3 (5) 8.5 μg/m3 (35) 35.0
 
Jan. 12, 2019, 6 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 7.0 μg/m3 (6) 7.1 μg/m3 (30) 30.0
 
Jan. 12, 2019, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 7.0 μg/m3 (6) 8.6 μg/m3 (36) 36.0
 
Jan. 12, 2019, 4 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 7.0 μg/m3 (6) 8.7 μg/m3 (36) 36.0
 
Jan. 12, 2019, 3 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 8.0 μg/m3 (7) 5.2 μg/m3 (22) 23.0
 
Jan. 12, 2019, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 6.0 μg/m3 (5) 7.6 μg/m3 (32) 32.0
 
Jan. 12, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 7.0 μg/m3 (6) 9.6 μg/m3 (40) 40.0
 
Jan. 12, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 7.0 μg/m3 (6) 11.9 μg/m3 (50) 50.0
 
Jan. 11, 2019, 11 p.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 7.0 μg/m3 (6) 11.2 μg/m3 (47) 47.0
 
Jan. 11, 2019, 10 p.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 7.0 μg/m3 (6) 10.5 μg/m3 (44) 44.0
 
Jan. 11, 2019, 9 p.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 8.0 μg/m3 (7) 7.1 μg/m3 (30) 30.0
 
Jan. 11, 2019, 8 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 8.0 μg/m3 (7) 8.8 μg/m3 (37) 37.0
 
Jan. 11, 2019, 7 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 6.0 μg/m3 (5) 14.1 μg/m3 (54) 54.0
 
Jan. 11, 2019, 6 p.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 8.0 μg/m3 (7) 10.4 μg/m3 (43) 43.0
 
Jan. 11, 2019, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) N/A 7.0 μg/m3 (6) 11.2 μg/m3 (47) 47.0
 
Jan. 11, 2019, 4 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 8.0 μg/m3 (7) 6.5 μg/m3 (27) 27.0
 
Jan. 11, 2019, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 7.0 μg/m3 (6) 2.6 μg/m3 (11) 18.0
 
Jan. 11, 2019, 2 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 5.0 μg/m3 (5) -0.9 μg/m3 (0) 18.0
 
Jan. 11, 2019, 1 p.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) 1.5 μg/m3 (6) 18.0
 
Jan. 11, 2019, noon 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 5.0 μg/m3 (5) 4.4 μg/m3 (18) 18.0
 
Jan. 11, 2019, 11 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 5.0 μg/m3 (5) 1.7 μg/m3 (7) 18.0
 
Jan. 11, 2019, 10 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 4.0 μg/m3 (4) -0.2 μg/m3 (0) 17.0
 
Jan. 11, 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 6.0 μg/m3 (5) 3.6 μg/m3 (15) 15.0
 
Jan. 11, 2019, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 6.0 μg/m3 (5) 5.5 μg/m3 (23) 23.0
 
Jan. 11, 2019, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 14.0 ppb (11) N/A 6.0 μg/m3 (5) 15.4 μg/m3 (57) 57.0
 
Jan. 11, 2019, 6 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 6.0 μg/m3 (5) 1.8 μg/m3 (8) 13.0
 
Jan. 11, 2019, 5 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 7.0 μg/m3 (6) 0.9 μg/m3 (4) 14.0
 
Jan. 11, 2019, 4 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 7.0 μg/m3 (6) 2.1 μg/m3 (9) 14.0
 
Jan. 11, 2019, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 7.0 μg/m3 (6) 3.2 μg/m3 (13) 15.0
 
Jan. 11, 2019, 2 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 15.0
 
Jan. 11, 2019, 1 a.m. 2.0 ppb (2) 0.0 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) 3.7 μg/m3 (15) 15.0
 
Jan. 11, 2019, midnight 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 6.0 μg/m3 (5) 5.5 μg/m3 (23) 23.0
 
Jan. 10, 2019, 11 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 7.0 μg/m3 (6) 8.0 μg/m3 (33) 33.0
 
Jan. 10, 2019, 10 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 11.0 μg/m3 (10) 10.2 μg/m3 (42) 42.0
 
Jan. 10, 2019, 9 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 14.0 μg/m3 (13) 13.8 μg/m3 (54) 54.0
 
Jan. 10, 2019, 8 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 14.0 μg/m3 (13) 12.4 μg/m3 (51) 51.0
 
Jan. 10, 2019, 7 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 12.0 μg/m3 (11) 8.6 μg/m3 (36) 36.0
 
Jan. 10, 2019, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 7.0 μg/m3 (6) 15.7 μg/m3 (58) 58.0
 
Jan. 10, 2019, 5 p.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) 5.0 μg/m3 (21) 21.0
 
Jan. 10, 2019, 4 p.m. 2.0 ppb (2) 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) 5.1 μg/m3 (21) 21.0
 
Jan. 10, 2019, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 5.0 μg/m3 (5) 8.2 μg/m3 (34) 34.0
 
Jan. 10, 2019, 2 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 6.0 μg/m3 (5) 4.9 μg/m3 (20) 20.0
 
Jan. 10, 2019, 1 p.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 4.0 μg/m3 (4) 4.7 μg/m3 (20) 21.0
 
Jan. 10, 2019, noon 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 3.0 μg/m3 (3) 6.4 μg/m3 (27) 27.0
 
Jan. 10, 2019, 11 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 3.0 μg/m3 (3) 5.1 μg/m3 (21) 21.0
 
Jan. 10, 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 2.0 μg/m3 (2) 1.8 μg/m3 (8) 21.0
 
Jan. 10, 2019, 9 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 3.0 μg/m3 (3) 3.7 μg/m3 (15) 21.0
 
Jan. 10, 2019, 8 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) 3.5 μg/m3 (15) 21.0
 
Jan. 10, 2019, 7 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 3.0 μg/m3 (3) 4.0 μg/m3 (17) 22.0
 
Jan. 10, 2019, 6 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 3.0 μg/m3 (3) 5.9 μg/m3 (25) 25.0
 
Jan. 10, 2019, 5 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 3.0 μg/m3 (3) 5.5 μg/m3 (23) 23.0
 
Jan. 10, 2019, 4 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 2.0 μg/m3 (2) 3.6 μg/m3 (15) 22.0
 
Jan. 10, 2019, 3 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 3.0 μg/m3 (3) 2.7 μg/m3 (11) 22.0
 
Jan. 10, 2019, 2 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 4.0 μg/m3 (4) 2.6 μg/m3 (11) 23.0
 
Jan. 10, 2019, 1 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 3.0 μg/m3 (3) 2.4 μg/m3 (10) 24.0
 
Jan. 10, 2019, midnight 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 4.0 μg/m3 (4) 4.5 μg/m3 (19) 24.0
 
Jan. 9, 2019, 11 p.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 4.0 μg/m3 (4) 6.1 μg/m3 (25) 25.0
 
Jan. 9, 2019, 10 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 3.0 μg/m3 (3) 6.3 μg/m3 (26) 26.0
 
Jan. 9, 2019, 9 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 4.0 μg/m3 (4) 4.6 μg/m3 (19) 24.0