AQSQID: 390810017

Site Name: Steubenville

Location: Steubenville, OH

Reporting: True, Located: True

Current AQI: 23.0

Steubenville OH, US: 40.366452, -80.615691

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 4.4 μg/m3 (18) 23.0
 
Sept. 18, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 4.6 μg/m3 (19) 24.0
 
Sept. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 3.1 μg/m3 (13) 27.0
 
Sept. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 2.4 μg/m3 (10) 35.0
 
Sept. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A N/A 3.2 μg/m3 (13) 35.0
 
Sept. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A N/A 2.7 μg/m3 (11) 35.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 45.0 ppb (35) N/A N/A 2.4 μg/m3 (10) 35.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 44.0 ppb (34) N/A N/A 7.8 μg/m3 (32) 34.0
 
Sept. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 41.0 ppb (32) N/A N/A 7.5 μg/m3 (31) 32.0
 
Sept. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 39.0 ppb (30) N/A N/A 5.5 μg/m3 (23) 30.0
 
Sept. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 21.0 ppb (16) N/A N/A 8.5 μg/m3 (35) 35.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 15.0 ppb (12) N/A N/A 10.6 μg/m3 (44) 44.0
 
Sept. 17, 2019, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 11.0 ppb (8) N/A N/A 10.3 μg/m3 (43) 43.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 6.0 ppb (5) N/A N/A 10.3 μg/m3 (43) 43.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 7.5 μg/m3 (31) 31.0
 
Sept. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 14.0 ppb (11) N/A N/A 7.7 μg/m3 (32) 32.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 17.0 ppb (13) N/A N/A 11.5 μg/m3 (48) 48.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 17.0 ppb (13) N/A N/A 11.5 μg/m3 (48) 48.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 16.0 ppb (12) N/A N/A 7.5 μg/m3 (31) 31.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 19.0 ppb (15) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 3.9 μg/m3 (16) 22.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A N/A 6.9 μg/m3 (29) 29.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 9.5 μg/m3 (40) 40.0
 
Sept. 17, 2019, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 40.0 ppb (31) N/A N/A 10.1 μg/m3 (42) 42.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 39.0 ppb (30) N/A N/A 13.9 μg/m3 (54) 54.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 53.0 ppb (41) N/A N/A 13.9 μg/m3 (54) 54.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 50.0 ppb (38) N/A N/A 10.7 μg/m3 (45) 45.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 51.0 ppb (39) N/A N/A 8.6 μg/m3 (36) 39.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 55.0 ppb (42) N/A N/A 8.4 μg/m3 (35) 42.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 55.0 ppb (42) N/A N/A 5.2 μg/m3 (22) 42.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 48.0 ppb (37) N/A N/A 5.2 μg/m3 (22) 37.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 35.0 ppb (27) N/A N/A 7.2 μg/m3 (30) 30.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 21.0 ppb (16) N/A N/A 8.8 μg/m3 (37) 37.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 10.0 ppb (8) N/A N/A 8.2 μg/m3 (34) 34.0
 
Sept. 16, 2019, noon N/A N/A N/A N/A N/A 3.0 ppb (4) 4.0 ppb (3) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 1.0 ppb (1) N/A N/A 10.8 μg/m3 (45) 45.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 9.3 μg/m3 (39) 39.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 0.0 ppb (0) N/A N/A 7.7 μg/m3 (32) 32.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 1.0 ppb (1) N/A N/A 8.8 μg/m3 (37) 37.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 0.0 ppb (0) N/A N/A 9.8 μg/m3 (41) 41.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 1.0 ppb (1) N/A N/A 9.8 μg/m3 (41) 41.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 3.0 ppb (2) N/A N/A 8.5 μg/m3 (35) 35.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 4.0 ppb (3) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A N/A 8.2 μg/m3 (34) 34.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 5.0 ppb (4) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 15.0 ppb (12) N/A N/A 3.6 μg/m3 (15) 15.0
 
Sept. 16, 2019, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (19) N/A N/A 3.1 μg/m3 (13) 19.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A N/A 2.3 μg/m3 (10) 24.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 2.9 μg/m3 (12) 31.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 45.0 ppb (35) N/A N/A 1.9 μg/m3 (8) 35.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 46.0 ppb (35) N/A N/A 4.2 μg/m3 (18) 35.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 50.0 ppb (38) N/A N/A 4.7 μg/m3 (20) 38.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 47.0 ppb (36) N/A N/A 3.9 μg/m3 (16) 36.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 44.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 38.0 ppb (29) N/A N/A 6.5 μg/m3 (27) 29.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 26.0 ppb (20) N/A N/A 9.3 μg/m3 (39) 39.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A 8.0 ppb (11) 11.0 ppb (8) N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 6.0 ppb (5) N/A N/A 22.6 μg/m3 (73) 73.0
 
Sept. 15, 2019, noon N/A N/A N/A N/A N/A 3.0 ppb (4) 4.0 ppb (3) N/A N/A 19.3 μg/m3 (66) 66.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 2.0 ppb (2) N/A N/A 17.3 μg/m3 (61) 61.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A N/A 12.2 μg/m3 (50) 50.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 1.0 ppb (1) N/A N/A 18.3 μg/m3 (63) 63.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 1.0 ppb (1) N/A N/A 14.2 μg/m3 (55) 55.0
 
Sept. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 0.0 ppb (0) N/A N/A 15.8 μg/m3 (58) 58.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 1.0 ppb (1) N/A N/A 11.2 μg/m3 (47) 47.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 2.0 ppb (2) N/A N/A 6.7 μg/m3 (28) 28.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 2.0 ppb (2) N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) N/A N/A 4.1 μg/m3 (17) 17.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 20.0 ppb (15) N/A N/A 2.0 μg/m3 (8) 15.0
 
Sept. 15, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 2.8 μg/m3 (12) 23.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 1.3 μg/m3 (5) 27.0
 
Sept. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 1.8 μg/m3 (8) 30.0
 
Sept. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 3.1 μg/m3 (13) 32.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 0.9 μg/m3 (4) 35.0
 
Sept. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
Sept. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A N/A 3.9 μg/m3 (16) 34.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 3.9 μg/m3 (16) 30.0
 
Sept. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 2.3 μg/m3 (10) 24.0
 
Sept. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A N/A 7.5 μg/m3 (31) 31.0
 
Sept. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 17.0 ppb (13) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) N/A N/A 3.8 μg/m3 (16) 16.0
 
Sept. 14, 2019, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 9.0 ppb (7) N/A N/A 3.1 μg/m3 (13) 13.0
 
Sept. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 9.0 ppb (7) N/A N/A 3.6 μg/m3 (15) 15.0
 
Sept. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 4.0 ppb (3) N/A N/A 8.8 μg/m3 (37) 37.0
 
Sept. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 7.0 ppb (5) N/A N/A 8.3 μg/m3 (35) 35.0
 
Sept. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 10.0 ppb (8) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 14.0 ppb (11) N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 16.0 ppb (12) N/A N/A 3.4 μg/m3 (14) 14.0
 
Sept. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 17.0 ppb (13) N/A N/A 6.2 μg/m3 (26) 26.0
 
Sept. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 17.0 ppb (13) N/A N/A 2.1 μg/m3 (9) 13.0
 
Sept. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 19.0 ppb (15) N/A N/A 0.8 μg/m3 (3) 15.0
 
Sept. 14, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A N/A 3.4 μg/m3 (14) 19.0
 
Sept. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 6.8 μg/m3 (28) 28.0
 
Sept. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 46.0 ppb (35) N/A N/A 9.2 μg/m3 (38) 38.0
 
Sept. 13, 2019, 9 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 63.0 ppb (48) N/A N/A 20.8 μg/m3 (69) 69.0
 
Sept. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A 7.0 ppb (10) 62.0 ppb (48) N/A N/A 20.5 μg/m3 (68) 68.0
 
Sept. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 59.0 ppb (45) N/A N/A 19.5 μg/m3 (66) 66.0
 
Sept. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 55.0 ppb (42) N/A N/A 16.2 μg/m3 (59) 59.0
 
Sept. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 51.0 ppb (39) N/A N/A 18.0 μg/m3 (63) 63.0
 
Sept. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 46.0 ppb (35) N/A N/A 13.4 μg/m3 (53) 53.0
 
Sept. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A N/A 10.1 μg/m3 (42) 42.0
 
Sept. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (19) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 14.0 ppb (11) N/A N/A 7.5 μg/m3 (31) 31.0
 
Sept. 13, 2019, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 6.0 ppb (5) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 4.0 ppb (3) N/A N/A 6.5 μg/m3 (27) 27.0
 
Sept. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 13, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 9.0 ppb (7) N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 13, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 10.0 ppb (8) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 13, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 13, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 18.0 ppb (14) N/A N/A 8.3 μg/m3 (35) 35.0
 
Sept. 13, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 13, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 29.0 ppb (22) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 13, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A N/A 8.5 μg/m3 (35) 35.0
 
Sept. 13, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 9.9 μg/m3 (41) 41.0
 
Sept. 12, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 47.0 ppb (36) N/A N/A 9.4 μg/m3 (39) 39.0
 
Sept. 12, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 57.0 ppb (44) N/A N/A 11.4 μg/m3 (48) 48.0
 
Sept. 12, 2019, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 57.0 ppb (44) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 12, 2019, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 50.0 ppb (38) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 12, 2019, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 46.0 ppb (35) N/A N/A 10.7 μg/m3 (45) 45.0
 
Sept. 12, 2019, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 47.0 ppb (36) N/A N/A 10.7 μg/m3 (45) 45.0
 
Sept. 12, 2019, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 44.0 ppb (34) N/A N/A 8.2 μg/m3 (34) 34.0
 
Sept. 12, 2019, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 44.0 ppb (34) N/A N/A 3.5 μg/m3 (15) 34.0
 
Sept. 12, 2019, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 40.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
Sept. 12, 2019, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 12, 2019, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 16.0 ppb (12) N/A N/A 8.3 μg/m3 (35) 35.0
 
Sept. 12, 2019, noon N/A N/A N/A N/A N/A 3.0 ppb (4) 12.0 ppb (9) N/A N/A 9.5 μg/m3 (40) 40.0
 
Sept. 12, 2019, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 16.0 ppb (12) N/A N/A 7.7 μg/m3 (32) 32.0
 
Sept. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 12, 2019, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A N/A 6.7 μg/m3 (28) 28.0
 
Sept. 12, 2019, 8 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 35.0 ppb (27) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 12, 2019, 7 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 5.0 ppb (4) N/A N/A 13.5 μg/m3 (53) 53.0
 
Sept. 12, 2019, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 6.0 ppb (5) N/A N/A 15.5 μg/m3 (57) 57.0
 
Sept. 12, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 12, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 12, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 11.5 μg/m3 (48) 48.0
 
Sept. 12, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A N/A 11.6 μg/m3 (48) 48.0
 
Sept. 12, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (28) N/A N/A 9.9 μg/m3 (41) 41.0
 
Sept. 12, 2019, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 40.0 ppb (31) N/A N/A 9.9 μg/m3 (41) 41.0
 
Sept. 11, 2019, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 48.0 ppb (37) N/A N/A 12.9 μg/m3 (52) 52.0
 
Sept. 11, 2019, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 58.0 ppb (45) N/A N/A 11.4 μg/m3 (48) 48.0
 
Sept. 11, 2019, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 59.0 ppb (45) N/A N/A 10.2 μg/m3 (42) 45.0
 
Sept. 11, 2019, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 59.0 ppb (45) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 11, 2019, 7 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 59.0 ppb (45) N/A N/A 11.5 μg/m3 (48) 48.0
 
Sept. 11, 2019, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 58.0 ppb (45) N/A N/A 9.5 μg/m3 (40) 45.0
 
Sept. 11, 2019, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 59.0 ppb (45) N/A N/A 9.7 μg/m3 (40) 45.0
 
Sept. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 58.0 ppb (45) N/A N/A 12.4 μg/m3 (51) 51.0
 
Sept. 11, 2019, 3 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 46.0 ppb (35) N/A N/A 14.1 μg/m3 (54) 54.0
 
Sept. 11, 2019, 2 p.m. N/A N/A N/A N/A N/A 9.0 ppb (13) 17.0 ppb (13) N/A N/A 18.4 μg/m3 (64) 64.0
 
Sept. 11, 2019, 1 p.m. N/A N/A N/A N/A N/A 10.0 ppb (14) 4.0 ppb (3) N/A N/A 27.2 μg/m3 (82) 82.0
 
Sept. 11, 2019, noon N/A N/A N/A N/A N/A 5.0 ppb (7) 1.0 ppb (1) N/A N/A 16.3 μg/m3 (59) 59.0
 
Sept. 11, 2019, 11 a.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 0.0 ppb (0) N/A N/A 9.8 μg/m3 (41) 41.0
 
Sept. 11, 2019, 10 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A 10.1 μg/m3 (42) 42.0
 
Sept. 11, 2019, 9 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 0.0 ppb (0) N/A N/A 16.3 μg/m3 (59) 59.0
 
Sept. 11, 2019, 8 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 0.0 ppb (0) N/A N/A 10.8 μg/m3 (45) 45.0
 
Sept. 11, 2019, 7 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 0.0 ppb (0) N/A N/A 11.5 μg/m3 (48) 48.0
 
Sept. 11, 2019, 6 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 1.0 ppb (1) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 11, 2019, 5 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 0.0 ppb (0) N/A N/A 16.1 μg/m3 (59) 59.0
 
Sept. 11, 2019, 4 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 1.0 ppb (1) N/A N/A 11.5 μg/m3 (48) 48.0
 
Sept. 11, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 11, 2019, 2 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 14.0 ppb (11) N/A N/A 11.3 μg/m3 (47) 47.0
 
Sept. 11, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 15.0 ppb (12) N/A N/A 11.5 μg/m3 (48) 48.0