ID: 1349

AQSQID: 390810017

Site Name: Steubenville

Added: April 21, 2020, 6:24 p.m.

Updated: June 14, 2021, 8:51 p.m.

Location: Steubenville (Pleasant Heights), OH

Reporting: True, Located: True

Current AQI: 58.0

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
June 14, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 14.8 μg/m3 (57) 57.0
 
June 14, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 15.1 μg/m3 (58) 58.0
 
June 14, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 49.0 ppb (46) N/A N/A 12.8 μg/m3 (53) 53.0
 
June 14, 2021, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 47.0 ppb (44) N/A N/A 12.5 μg/m3 (52) 52.0
 
June 14, 2021, 4 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 43.0 ppb (40) N/A N/A 13.8 μg/m3 (55) 55.0
 
June 14, 2021, 3 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 39.0 ppb (37) N/A N/A 12.2 μg/m3 (52) 52.0
 
June 14, 2021, 2 p.m. N/A N/A N/A N/A N/A 11.0 ppb (16) 25.0 ppb (24) N/A N/A 15.4 μg/m3 (58) 58.0
 
June 14, 2021, 1 p.m. N/A N/A N/A N/A N/A 10.0 ppb (15) 13.0 ppb (13) N/A N/A 20.1 μg/m3 (68) 68.0
 
June 14, 2021, noon N/A N/A N/A N/A N/A 6.0 ppb (9) 13.0 ppb (13) N/A N/A 18.0 μg/m3 (64) 64.0
 
June 14, 2021, 11 a.m. N/A N/A N/A N/A N/A 21.0 ppb (30) 8.0 ppb (8) N/A N/A 28.6 μg/m3 (86) 86.0
 
June 14, 2021, 10 a.m. N/A N/A N/A N/A N/A 12.0 ppb (18) N/A N/A N/A 35.4 μg/m3 (100) 100.0
 
June 14, 2021, 9 a.m. N/A N/A N/A N/A N/A 13.0 ppb (19) 5.0 ppb (5) N/A N/A 35.1 μg/m3 (100) 100.0
 
June 14, 2021, 8 a.m. N/A N/A N/A N/A N/A 8.0 ppb (12) 7.0 ppb (7) N/A N/A 32.3 μg/m3 (94) 94.0
 
June 14, 2021, 7 a.m. N/A N/A N/A N/A N/A 5.0 ppb (8) 5.0 ppb (5) N/A N/A 30.9 μg/m3 (91) 91.0
 
June 14, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 19.1 μg/m3 (66) 66.0
 
June 14, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 14.7 μg/m3 (57) 57.0
 
June 14, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 14.7 μg/m3 (57) 57.0
 
June 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 13.0 μg/m3 (53) 53.0
 
June 14, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 12.5 μg/m3 (52) 52.0
 
June 14, 2021, 1 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 28.0 ppb (26) N/A N/A 11.0 μg/m3 (46) 46.0
 
June 14, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 13.4 μg/m3 (54) 54.0
 
June 13, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 11.7 μg/m3 (49) 49.0
 
June 13, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 42.0 ppb (39) N/A N/A 13.0 μg/m3 (53) 53.0
 
June 13, 2021, 9 p.m. N/A N/A N/A N/A N/A 7.0 ppb (10) 41.0 ppb (38) N/A N/A 13.2 μg/m3 (54) 54.0
 
June 13, 2021, 8 p.m. N/A N/A N/A N/A N/A 7.0 ppb (10) 45.0 ppb (42) N/A N/A 12.8 μg/m3 (53) 53.0
 
June 13, 2021, 7 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 50.0 ppb (47) N/A N/A 17.5 μg/m3 (63) 63.0
 
June 13, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 61.0 ppb (71) N/A N/A 24.0 μg/m3 (77) 77.0
 
June 13, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 65.0 ppb (84) N/A N/A 28.8 μg/m3 (87) 87.0
 
June 13, 2021, 4 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 53.0 ppb (50) N/A N/A 28.8 μg/m3 (87) 87.0
 
June 13, 2021, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 36.0 ppb (34) N/A N/A 34.7 μg/m3 (99) 99.0
 
June 13, 2021, 2 p.m. N/A N/A N/A N/A N/A 5.0 ppb (8) 16.0 ppb (15) N/A N/A 32.4 μg/m3 (94) 94.0
 
June 13, 2021, 1 p.m. N/A N/A N/A N/A N/A 9.0 ppb (13) 7.0 ppb (7) N/A N/A 34.3 μg/m3 (98) 98.0
 
June 13, 2021, noon N/A N/A N/A N/A N/A 13.0 ppb (19) 3.0 ppb (3) N/A N/A 42.0 μg/m3 (118) 118.0
 
June 13, 2021, 11 a.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 3.0 ppb (3) N/A N/A 33.4 μg/m3 (96) 96.0
 
June 13, 2021, 10 a.m. N/A N/A N/A N/A N/A 6.0 ppb (9) N/A N/A N/A 32.9 μg/m3 (95) 95.0
 
June 13, 2021, 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 28.9 μg/m3 (87) 87.0
 
June 13, 2021, 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 28.1 μg/m3 (85) 85.0
 
June 13, 2021, 7 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 0.0 ppb (0) N/A N/A 31.5 μg/m3 (92) 92.0
 
June 13, 2021, 6 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 1.0 ppb (1) N/A N/A 29.6 μg/m3 (88) 88.0
 
June 13, 2021, 5 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 2.0 ppb (2) N/A N/A 28.6 μg/m3 (86) 86.0
 
June 13, 2021, 4 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 5.0 ppb (5) N/A N/A 27.8 μg/m3 (85) 85.0
 
June 13, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 22.9 μg/m3 (74) 74.0
 
June 13, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 7.0 ppb (7) N/A N/A 22.5 μg/m3 (73) 73.0
 
June 13, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 21.0 μg/m3 (70) 70.0
 
June 13, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A N/A 18.0 μg/m3 (64) 64.0
 
June 12, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 49.0 ppb (46) N/A N/A 18.9 μg/m3 (66) 66.0
 
June 12, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 61.0 ppb (71) N/A N/A 20.0 μg/m3 (68) 71.0
 
June 12, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 56.0 ppb (55) N/A N/A 18.4 μg/m3 (65) 65.0
 
June 12, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 50.0 ppb (47) N/A N/A 16.1 μg/m3 (60) 60.0
 
June 12, 2021, 7 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 58.0 ppb (61) N/A N/A 17.3 μg/m3 (62) 62.0
 
June 12, 2021, 6 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 49.0 ppb (46) N/A N/A 16.8 μg/m3 (61) 61.0
 
June 12, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 43.0 ppb (40) N/A N/A 15.2 μg/m3 (58) 58.0
 
June 12, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 14.1 μg/m3 (56) 56.0
 
June 12, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 19.0 ppb (18) N/A N/A 13.6 μg/m3 (55) 55.0
 
June 12, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 13.6 μg/m3 (55) 55.0
 
June 12, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A N/A 14.6 μg/m3 (57) 57.0
 
June 12, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A N/A 14.7 μg/m3 (57) 57.0
 
June 12, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 13.8 μg/m3 (55) 55.0
 
June 12, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 15.0 μg/m3 (58) 58.0
 
June 12, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (4) N/A N/A 14.9 μg/m3 (57) 57.0
 
June 12, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 13.8 μg/m3 (55) 55.0
 
June 12, 2021, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 14.6 μg/m3 (57) 57.0
 
June 12, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 15.2 μg/m3 (58) 58.0
 
June 12, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 17.3 μg/m3 (62) 62.0
 
June 12, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 18.9 μg/m3 (66) 66.0
 
June 12, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 17.7 μg/m3 (63) 63.0
 
June 12, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 17.1 μg/m3 (62) 62.0
 
June 12, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 16.6 μg/m3 (61) 61.0
 
June 12, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 15.7 μg/m3 (59) 59.0
 
June 11, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 16.6 μg/m3 (61) 61.0
 
June 11, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 19.3 μg/m3 (67) 67.0
 
June 11, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 18.3 μg/m3 (65) 65.0
 
June 11, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 18.6 μg/m3 (65) 65.0
 
June 11, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 18.5 μg/m3 (65) 65.0
 
June 11, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 14.3 μg/m3 (56) 56.0
 
June 11, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 10.3 μg/m3 (43) 43.0
 
June 11, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 10.0 μg/m3 (42) 42.0
 
June 11, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 9.3 μg/m3 (39) 39.0
 
June 11, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 8.8 μg/m3 (37) 37.0
 
June 11, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 11.0 μg/m3 (46) 46.0
 
June 11, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 13.7 μg/m3 (55) 55.0
 
June 11, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 13.8 μg/m3 (55) 55.0
 
June 11, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 14.5 μg/m3 (57) 57.0
 
June 11, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A N/A 14.2 μg/m3 (56) 56.0
 
June 11, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A N/A 14.3 μg/m3 (56) 56.0
 
June 11, 2021, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 13.8 μg/m3 (55) 55.0
 
June 11, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 11.6 μg/m3 (49) 49.0
 
June 11, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 11.6 μg/m3 (49) 49.0
 
June 11, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 11.0 μg/m3 (46) 46.0
 
June 11, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 12.8 μg/m3 (53) 53.0
 
June 11, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 14.2 μg/m3 (56) 56.0
 
June 11, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 12.9 μg/m3 (53) 53.0
 
June 11, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 11.4 μg/m3 (48) 48.0
 
June 10, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 11.0 μg/m3 (46) 46.0
 
June 10, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 12.0 μg/m3 (50) 50.0
 
June 10, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 13.8 μg/m3 (55) 55.0
 
June 10, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 12.3 μg/m3 (52) 52.0
 
June 10, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (24) N/A N/A 11.0 μg/m3 (46) 46.0
 
June 10, 2021, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (26) N/A N/A 12.8 μg/m3 (53) 53.0
 
June 10, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A N/A 13.1 μg/m3 (54) 54.0
 
June 10, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A N/A 15.3 μg/m3 (58) 58.0
 
June 10, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A N/A 14.4 μg/m3 (56) 56.0
 
June 10, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A N/A 31.0
 
June 10, 2021, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 26.0 ppb (25) N/A N/A 12.9 μg/m3 (53) 53.0
 
June 10, 2021, noon N/A N/A N/A N/A N/A 4.0 ppb (6) 11.0 ppb (11) N/A N/A 15.5 μg/m3 (59) 59.0
 
June 10, 2021, 11 a.m. N/A N/A N/A N/A N/A 8.0 ppb (12) 2.0 ppb (2) N/A N/A 16.1 μg/m3 (60) 60.0
 
June 10, 2021, 10 a.m. N/A N/A N/A N/A N/A 6.0 ppb (9) N/A N/A N/A 13.2 μg/m3 (54) 54.0
 
June 10, 2021, 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 13.0 μg/m3 (53) 53.0
 
June 10, 2021, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 0.0 ppb (0) N/A N/A 13.5 μg/m3 (54) 54.0
 
June 10, 2021, 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 13.4 μg/m3 (54) 54.0
 
June 10, 2021, 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 12.0 μg/m3 (50) 50.0
 
June 10, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 10.8 μg/m3 (46) 46.0
 
June 10, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 12.0 ppb (12) N/A N/A 11.4 μg/m3 (48) 48.0
 
June 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 11.1 μg/m3 (47) 47.0
 
June 10, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 21.0 ppb (20) N/A N/A 11.6 μg/m3 (49) 49.0
 
June 10, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 11.5 μg/m3 (48) 48.0
 
June 10, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 10.6 μg/m3 (45) 45.0
 
June 9, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 9.6 μg/m3 (40) 40.0
 
June 9, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 42.0 ppb (39) N/A N/A 7.4 μg/m3 (31) 39.0
 
June 9, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 8.3 μg/m3 (35) 39.0
 
June 9, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 45.0 ppb (42) N/A N/A 11.7 μg/m3 (49) 49.0
 
June 9, 2021, 7 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 48.0 ppb (45) N/A N/A 10.5 μg/m3 (44) 45.0
 
June 9, 2021, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 41.0 ppb (38) N/A N/A 12.8 μg/m3 (53) 53.0
 
June 9, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 13.7 μg/m3 (55) 55.0
 
June 9, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 11.0 μg/m3 (46) 46.0
 
June 9, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 12.9 μg/m3 (53) 53.0
 
June 9, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 12.0 μg/m3 (50) 50.0
 
June 9, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 10.9 μg/m3 (46) 46.0
 
June 9, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 13.9 μg/m3 (55) 55.0
 
June 9, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A N/A 9.8 μg/m3 (41) 41.0
 
June 9, 2021, 10 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 (36) 36.0
 
June 9, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 7.5 μg/m3 (32) 32.0
 
June 9, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 12.0 ppb (12) N/A N/A 8.5 μg/m3 (36) 36.0
 
June 9, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 7.3 μg/m3 (31) 31.0
 
June 9, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 8.1 μg/m3 (34) 34.0
 
June 9, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 7.7 μg/m3 (33) 33.0
 
June 9, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 7.4 μg/m3 (31) 31.0
 
June 9, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 7.2 μg/m3 (31) 31.0
 
June 9, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 6.1 μg/m3 (26) 27.0
 
June 9, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 6.5 μg/m3 (28) 28.0
 
June 9, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 8.1 μg/m3 (34) 34.0
 
June 8, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 9.6 μg/m3 (40) 40.0
 
June 8, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 9.0 μg/m3 (38) 38.0
 
June 8, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 9.0 μg/m3 (38) 38.0
 
June 8, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 8.6 μg/m3 (36) 36.0
 
June 8, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 8.9 μg/m3 (38) 38.0
 
June 8, 2021, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (28) N/A N/A 8.6 μg/m3 (36) 36.0
 
June 8, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (27) N/A N/A 8.8 μg/m3 (37) 37.0
 
June 8, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 7.5 μg/m3 (32) 32.0
 
June 8, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 9.1 μg/m3 (38) 38.0
 
June 8, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 10.3 μg/m3 (43) 43.0
 
June 8, 2021, 1 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 18.0 ppb (17) N/A N/A 12.4 μg/m3 (52) 52.0
 
June 8, 2021, noon N/A N/A N/A N/A N/A 10.0 ppb (15) 3.0 ppb (3) N/A N/A 23.3 μg/m3 (75) 75.0
 
June 8, 2021, 11 a.m. N/A N/A N/A N/A N/A 10.0 ppb (15) 0.0 ppb (0) N/A N/A 20.4 μg/m3 (69) 69.0
 
June 8, 2021, 10 a.m. N/A N/A N/A N/A N/A 5.0 ppb (8) N/A N/A N/A 17.9 μg/m3 (64) 64.0
 
June 8, 2021, 9 a.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 0.0 ppb (0) N/A N/A 18.5 μg/m3 (65) 65.0
 
June 8, 2021, 8 a.m. N/A N/A N/A N/A N/A 5.0 ppb (8) 0.0 ppb (0) N/A N/A 19.5 μg/m3 (67) 67.0
 
June 8, 2021, 7 a.m. N/A N/A N/A N/A N/A 5.0 ppb (8) 0.0 ppb (0) N/A N/A 23.2 μg/m3 (75) 75.0
 
June 8, 2021, 6 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 0.0 ppb (0) N/A N/A 22.5 μg/m3 (73) 73.0
 
June 8, 2021, 5 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) -1.0 ppb (0) N/A N/A 29.8 μg/m3 (89) 89.0
 
June 8, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) -1.0 ppb (0) N/A N/A 20.2 μg/m3 (69) 69.0
 
June 8, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 17.5 μg/m3 (63) 63.0
 
June 8, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 8.0 ppb (8) N/A N/A 15.5 μg/m3 (59) 59.0
 
June 8, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 14.6 μg/m3 (57) 57.0
 
June 8, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A N/A 14.9 μg/m3 (57) 57.0
 
June 7, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 13.5 μg/m3 (54) 54.0
 
June 7, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 14.3 μg/m3 (56) 56.0
 
June 7, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (35) N/A N/A 16.1 μg/m3 (60) 60.0