AQSQID: 390810017

Site Name: Steubenville

Location: Steubenville (Pleasant Heights), OH

Reporting: True, Located: True

Current AQI: 62.0

Steubenville (Pleasant Heights) OH, US: 40.366452, -80.615691

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 23, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 17.6 μg/m3 (62) 62.0
 
Jan. 23, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 17.9 μg/m3 (63) 63.0
 
Jan. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 20.9 μg/m3 (69) 69.0
 
Jan. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.8 μg/m3 (52) 52.0
 
Jan. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 19.4 μg/m3 (66) 66.0
 
Jan. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 13.3 μg/m3 (53) 53.0
 
Jan. 23, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 17.9 μg/m3 (63) 63.0
 
Jan. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 13.4 μg/m3 (53) 53.0
 
Jan. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 11.6 μg/m3 (48) 48.0
 
Jan. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.2 μg/m3 (42) 42.0
 
Jan. 22, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 15.6 μg/m3 (58) 58.0
 
Jan. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.4 μg/m3 (59) 59.0
 
Jan. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.1 μg/m3 (46) 46.0
 
Jan. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.9 μg/m3 (60) 60.0
 
Jan. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 19.9 μg/m3 (67) 67.0
 
Jan. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A N/A 41.7 μg/m3 (116) 116.0
 
Jan. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A N/A 34.0 μg/m3 (97) 97.0
 
Jan. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A N/A 26.6 μg/m3 (81) 81.0
 
Jan. 22, 2020, noon N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 22.1 μg/m3 (71) 71.0
 
Jan. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 20.6 μg/m3 (68) 68.0
 
Jan. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 26.1 μg/m3 (80) 80.0
 
Jan. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 25.4 μg/m3 (79) 79.0
 
Jan. 22, 2020, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 18.3 μg/m3 (63) 63.0
 
Jan. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 20.3 μg/m3 (68) 68.0
 
Jan. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 20.1 μg/m3 (67) 67.0
 
Jan. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 19.1 μg/m3 (65) 65.0
 
Jan. 22, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 17.6 μg/m3 (62) 62.0
 
Jan. 22, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.8 μg/m3 (54) 54.0
 
Jan. 22, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 12.5 μg/m3 (51) 51.0
 
Jan. 22, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 12.3 μg/m3 (51) 51.0
 
Jan. 22, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 11.3 μg/m3 (47) 47.0
 
Jan. 21, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 8.8 μg/m3 (37) 37.0
 
Jan. 21, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.5 μg/m3 (19) 19.0
 
Jan. 21, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 21, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.2 μg/m3 (18) 18.0
 
Jan. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.4 μg/m3 (23) 23.0
 
Jan. 21, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.8 μg/m3 (37) 37.0
 
Jan. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 9.8 μg/m3 (41) 41.0
 
Jan. 21, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 21, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 10.5 μg/m3 (44) 44.0
 
Jan. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.5 μg/m3 (35) 35.0
 
Jan. 21, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 21, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.9 μg/m3 (29) 29.0
 
Jan. 21, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.2 μg/m3 (30) 30.0
 
Jan. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.6 μg/m3 (23) 23.0
 
Jan. 21, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 3.8 μg/m3 (16) 16.0
 
Jan. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 21, 2020, 2 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
 
Jan. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 6.5 μg/m3 (27) 27.0
 
Jan. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 5.4 μg/m3 (23) 23.0
 
Jan. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.4 μg/m3 (18) 18.0
 
Jan. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.7 μg/m3 (20) 20.0
 
Jan. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.4 μg/m3 (10) 10.0
 
Jan. 20, 2020, 6 p.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
 
Jan. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.3 μg/m3 (30) 30.0
 
Jan. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Jan. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.7 μg/m3 (32) 32.0
 
Jan. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 9.5 μg/m3 (40) 40.0
 
Jan. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 15.5 μg/m3 (57) 57.0
 
Jan. 20, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 13.2 μg/m3 (53) 53.0
 
Jan. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 14.5 μg/m3 (55) 55.0
 
Jan. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 14.4 μg/m3 (55) 55.0
 
Jan. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 13.7 μg/m3 (54) 54.0
 
Jan. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 16.5 μg/m3 (60) 60.0
 
Jan. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 11.2 μg/m3 (47) 47.0
 
Jan. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 12.9 μg/m3 (52) 52.0
 
Jan. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 13.7 μg/m3 (54) 54.0
 
Jan. 20, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 11.4 μg/m3 (48) 48.0
 
Jan. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.4 μg/m3 (43) 43.0
 
Jan. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 13.7 μg/m3 (54) 54.0
 
Jan. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 13.9 μg/m3 (54) 54.0
 
Jan. 20, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 12.4 μg/m3 (51) 51.0
 
Jan. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 11.4 μg/m3 (48) 48.0
 
Jan. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 11.2 μg/m3 (47) 47.0
 
Jan. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 11.7 μg/m3 (49) 49.0
 
Jan. 19, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 11.5 μg/m3 (48) 48.0
 
Jan. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 11.2 μg/m3 (47) 47.0
 
Jan. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 9.5 μg/m3 (40) 40.0
 
Jan. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 10.5 μg/m3 (44) 44.0
 
Jan. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.4 μg/m3 (23) 23.0
 
Jan. 19, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.5 μg/m3 (31) 31.0
 
Jan. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.5 μg/m3 (27) 27.0
 
Jan. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.1 μg/m3 (17) 17.0
 
Jan. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.4 μg/m3 (18) 18.0
 
Jan. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.2 μg/m3 (18) 18.0
 
Jan. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.4 μg/m3 (14) 14.0
 
Jan. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.7 μg/m3 (7) 7.0
 
Jan. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.4 μg/m3 (10) 10.0
 
Jan. 19, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.7 μg/m3 (11) 11.0
 
Jan. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.2 μg/m3 (5) 5.0
 
Jan. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
Jan. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.2 μg/m3 (1) 1.0
 
Jan. 19, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.2 μg/m3 (1) 1.0
 
Jan. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
Jan. 18, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.4 μg/m3 (6) 6.0
 
Jan. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.4 μg/m3 (10) 10.0
 
Jan. 18, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.7 μg/m3 (11) 11.0
 
Jan. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.4 μg/m3 (14) 14.0
 
Jan. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.4 μg/m3 (18) 18.0
 
Jan. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.4 μg/m3 (18) 18.0
 
Jan. 18, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.5 μg/m3 (35) 35.0
 
Jan. 18, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.5 μg/m3 (31) 31.0
 
Jan. 18, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.1 μg/m3 (13) 13.0
 
Jan. 18, 2020, noon 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
 
Jan. 18, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.2 μg/m3 (30) 30.0
 
Jan. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 18, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.1 μg/m3 (17) 17.0
 
Jan. 18, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.7 μg/m3 (20) 20.0
 
Jan. 18, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 18, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 18, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Jan. 18, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 18, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 18, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.1 μg/m3 (13) 13.0
 
Jan. 17, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.9 μg/m3 (12) 12.0
 
Jan. 17, 2020, 10 p.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
 
Jan. 17, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
Jan. 17, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.2 μg/m3 (13) 13.0
 
Jan. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.4 μg/m3 (14) 14.0
 
Jan. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.4 μg/m3 (14) 14.0
 
Jan. 17, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.1 μg/m3 (5) 5.0
 
Jan. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.1 μg/m3 (0) 1.0
 
Jan. 17, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.3 μg/m3 (1) 1.0
 
Jan. 17, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.1 μg/m3 (9) 9.0
 
Jan. 17, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.6 μg/m3 (7) 7.0
 
Jan. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.8 μg/m3 (8) 8.0
 
Jan. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.6 μg/m3 (15) 15.0
 
Jan. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.7 μg/m3 (32) 32.0
 
Jan. 17, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 8.5 μg/m3 (35) 35.0
 
Jan. 17, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 17, 2020, 6 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
 
Jan. 17, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 17, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.5 μg/m3 (31) 31.0
 
Jan. 17, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.8 μg/m3 (37) 37.0
 
Jan. 17, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.5 μg/m3 (31) 31.0
 
Jan. 16, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 16, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 6.5 μg/m3 (27) 27.0
 
Jan. 16, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 16, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 16.4 μg/m3 (59) 59.0
 
Jan. 16, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 9.9 μg/m3 (41) 41.0
 
Jan. 16, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Jan. 16, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.1 μg/m3 (30) 30.0
 
Jan. 16, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 16, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.6 μg/m3 (36) 36.0
 
Jan. 16, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 8.9 μg/m3 (37) 37.0
 
Jan. 16, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.1 μg/m3 (34) 34.0
 
Jan. 16, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 16, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 16, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.4 μg/m3 (31) 31.0
 
Jan. 16, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 4.3 μg/m3 (18) 18.0
 
Jan. 16, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 3.5 μg/m3 (15) 15.0