ID: 1349

AQSQID: 390810017

Site Name: Steubenville

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

Updated: April 10, 2021, 11:42 a.m.

Location: Steubenville (Pleasant Heights), OH

Reporting: True, Located: True

Current AQI: 52.0

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
April 10, 2021, 10 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) N/A N/A N/A 12.4 μg/m3 (52) 52.0
 
April 10, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 2.0 ppb (2) N/A N/A 11.5 μg/m3 (48) 48.0
 
April 10, 2021, 8 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 2.0 ppb (2) N/A N/A 11.4 μg/m3 (48) 48.0
 
April 10, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 2.0 ppb (2) N/A N/A 11.8 μg/m3 (50) 50.0
 
April 10, 2021, 6 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 3.0 ppb (3) N/A N/A 10.8 μg/m3 (46) 46.0
 
April 10, 2021, 5 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 8.0 ppb (8) N/A N/A 11.7 μg/m3 (49) 49.0
 
April 10, 2021, 4 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 6.0 ppb (6) N/A N/A 12.4 μg/m3 (52) 52.0
 
April 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 13.4 μg/m3 (54) 54.0
 
April 10, 2021, 2 a.m. N/A N/A N/A N/A N/A 7.0 ppb (10) 14.0 ppb (13) N/A N/A 13.9 μg/m3 (55) 55.0
 
April 10, 2021, 1 a.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 21.0 ppb (20) N/A N/A 11.0 μg/m3 (46) 46.0
 
April 10, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 5.7 μg/m3 (24) 35.0
 
April 9, 2021, 11 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 45.0 ppb (42) N/A N/A 5.2 μg/m3 (22) 42.0
 
April 9, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 52.0 ppb (49) N/A N/A 4.7 μg/m3 (20) 49.0
 
April 9, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 54.0 ppb (50) N/A N/A 4.3 μg/m3 (18) 50.0
 
April 9, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 4.3 μg/m3 (18) 50.0
 
April 9, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 53.0 ppb (50) N/A N/A 4.3 μg/m3 (18) 50.0
 
April 9, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 50.0 ppb (47) N/A N/A 5.2 μg/m3 (22) 47.0
 
April 9, 2021, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 49.0 ppb (46) N/A N/A 6.9 μg/m3 (29) 46.0
 
April 9, 2021, 4 p.m. N/A N/A N/A N/A N/A 13.0 ppb (19) 43.0 ppb (40) N/A N/A 9.1 μg/m3 (38) 40.0
 
April 9, 2021, 3 p.m. N/A N/A N/A N/A N/A 12.0 ppb (18) 39.0 ppb (37) N/A N/A 10.3 μg/m3 (43) 43.0
 
April 9, 2021, 2 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 37.0 ppb (35) N/A N/A 10.4 μg/m3 (44) 44.0
 
April 9, 2021, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 38.0 ppb (36) N/A N/A 10.7 μg/m3 (45) 45.0
 
April 9, 2021, noon N/A N/A N/A N/A N/A 5.0 ppb (8) 32.0 ppb (30) N/A N/A 13.8 μg/m3 (55) 55.0
 
April 9, 2021, 11 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 26.0 ppb (25) N/A N/A 17.5 μg/m3 (63) 63.0
 
April 9, 2021, 10 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) N/A N/A N/A 17.1 μg/m3 (62) 62.0
 
April 9, 2021, 9 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 32.0 ppb (30) N/A N/A 20.4 μg/m3 (69) 69.0
 
April 9, 2021, 8 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 32.0 ppb (30) N/A N/A 20.4 μg/m3 (69) 69.0
 
April 9, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (32) N/A N/A 17.9 μg/m3 (64) 64.0
 
April 9, 2021, 6 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 41.0 ppb (38) N/A N/A 16.5 μg/m3 (61) 61.0
 
April 9, 2021, 5 a.m. N/A N/A N/A N/A N/A 5.0 ppb (8) 45.0 ppb (42) N/A N/A 18.2 μg/m3 (64) 64.0
 
April 9, 2021, 4 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 43.0 ppb (40) N/A N/A 18.8 μg/m3 (66) 66.0
 
April 9, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 15.6 μg/m3 (59) 59.0
 
April 9, 2021, 2 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 50.0 ppb (47) N/A N/A 12.5 μg/m3 (52) 52.0
 
April 9, 2021, 1 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 46.0 ppb (43) N/A N/A 16.9 μg/m3 (62) 62.0
 
April 9, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 46.0 ppb (43) N/A N/A 19.3 μg/m3 (67) 67.0
 
April 8, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 50.0 ppb (47) N/A N/A 19.5 μg/m3 (67) 67.0
 
April 8, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 59.0 ppb (65) N/A N/A 18.1 μg/m3 (64) 65.0
 
April 8, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 64.0 ppb (81) N/A N/A 19.0 μg/m3 (66) 81.0
 
April 8, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 65.0 ppb (84) N/A N/A 19.7 μg/m3 (67) 84.0
 
April 8, 2021, 7 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 64.0 ppb (81) N/A N/A 17.8 μg/m3 (63) 81.0
 
April 8, 2021, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 62.0 ppb (74) N/A N/A 20.2 μg/m3 (69) 74.0
 
April 8, 2021, 5 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 63.0 ppb (78) N/A N/A 21.9 μg/m3 (72) 78.0
 
April 8, 2021, 4 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 61.0 ppb (71) N/A N/A 22.2 μg/m3 (73) 73.0
 
April 8, 2021, 3 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A 20.8 μg/m3 (70) 70.0
 
April 8, 2021, 2 p.m. N/A N/A N/A N/A N/A 8.0 ppb (12) N/A N/A N/A 30.5 μg/m3 (90) 90.0
 
April 8, 2021, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 11.0 ppb (11) N/A N/A 37.8 μg/m3 (107) 107.0
 
April 8, 2021, noon N/A N/A N/A N/A N/A 4.0 ppb (6) 5.0 ppb (5) N/A N/A 34.0 μg/m3 (98) 98.0
 
April 8, 2021, 11 a.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 2.0 ppb (2) N/A N/A 27.5 μg/m3 (84) 84.0
 
April 8, 2021, 10 a.m. N/A N/A N/A N/A N/A 8.0 ppb (12) N/A N/A N/A 27.1 μg/m3 (83) 83.0
 
April 8, 2021, 9 a.m. N/A N/A N/A N/A N/A 10.0 ppb (15) 2.0 ppb (2) N/A N/A 29.6 μg/m3 (88) 88.0
 
April 8, 2021, 8 a.m. N/A N/A N/A N/A N/A 7.0 ppb (10) 2.0 ppb (2) N/A N/A 29.3 μg/m3 (88) 88.0
 
April 8, 2021, 7 a.m. N/A N/A N/A N/A N/A 5.0 ppb (8) 6.0 ppb (6) N/A N/A 33.0 μg/m3 (95) 95.0
 
April 8, 2021, 6 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 12.0 ppb (12) N/A N/A 29.4 μg/m3 (88) 88.0
 
April 8, 2021, 5 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 14.0 ppb (13) N/A N/A 25.4 μg/m3 (79) 79.0
 
April 8, 2021, 4 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 13.0 ppb (13) N/A N/A 25.3 μg/m3 (79) 79.0
 
April 8, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 27.0 μg/m3 (83) 83.0
 
April 8, 2021, 2 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 18.0 ppb (17) N/A N/A 24.6 μg/m3 (78) 78.0
 
April 8, 2021, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A N/A 22.8 μg/m3 (74) 74.0
 
April 8, 2021, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 48.0 ppb (45) N/A N/A 20.4 μg/m3 (69) 69.0
 
April 7, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 57.0 ppb (58) N/A N/A 19.5 μg/m3 (67) 67.0
 
April 7, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 63.0 ppb (78) N/A N/A 18.7 μg/m3 (65) 78.0
 
April 7, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 63.0 ppb (78) N/A N/A 19.0 μg/m3 (66) 78.0
 
April 7, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 63.0 ppb (78) N/A N/A 20.3 μg/m3 (69) 78.0
 
April 7, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 60.0 ppb (68) N/A N/A 19.9 μg/m3 (68) 68.0
 
April 7, 2021, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 59.0 ppb (65) N/A N/A 20.3 μg/m3 (69) 69.0
 
April 7, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 58.0 ppb (61) N/A N/A 22.9 μg/m3 (74) 74.0
 
April 7, 2021, 4 p.m. N/A N/A N/A N/A N/A 5.0 ppb (8) 56.0 ppb (55) N/A N/A 22.9 μg/m3 (74) 74.0
 
April 7, 2021, 3 p.m. N/A N/A N/A N/A N/A 22.0 ppb (32) 36.0 ppb (34) N/A N/A 26.3 μg/m3 (81) 81.0
 
April 7, 2021, 2 p.m. N/A N/A N/A N/A N/A 36.0 ppb (51) 12.0 ppb (12) N/A N/A 38.5 μg/m3 (109) 109.0
 
April 7, 2021, 1 p.m. N/A N/A N/A N/A N/A 37.0 ppb (53) 7.0 ppb (7) N/A N/A 40.7 μg/m3 (114) 114.0
 
April 7, 2021, noon N/A N/A N/A N/A N/A 15.0 ppb (22) 5.0 ppb (5) N/A N/A 31.4 μg/m3 (92) 92.0
 
April 7, 2021, 11 a.m. N/A N/A N/A N/A N/A 12.0 ppb (18) 3.0 ppb (3) N/A N/A 21.9 μg/m3 (72) 72.0
 
April 7, 2021, 10 a.m. N/A N/A N/A N/A N/A 7.0 ppb (10) N/A N/A N/A 20.4 μg/m3 (69) 69.0
 
April 7, 2021, 9 a.m. N/A N/A N/A N/A N/A 7.0 ppb (10) 7.0 ppb (7) N/A N/A 20.9 μg/m3 (70) 70.0
 
April 7, 2021, 8 a.m. N/A N/A N/A N/A N/A 13.0 ppb (19) 8.0 ppb (8) N/A N/A 23.2 μg/m3 (75) 75.0
 
April 7, 2021, 7 a.m. N/A N/A N/A N/A N/A 14.0 ppb (20) 12.0 ppb (12) N/A N/A 25.1 μg/m3 (79) 79.0
 
April 7, 2021, 6 a.m. N/A N/A N/A N/A N/A 16.0 ppb (23) 14.0 ppb (13) N/A N/A 25.5 μg/m3 (80) 80.0
 
April 7, 2021, 5 a.m. N/A N/A N/A N/A N/A 26.0 ppb (38) 14.0 ppb (13) N/A N/A 29.9 μg/m3 (89) 89.0
 
April 7, 2021, 4 a.m. N/A N/A N/A N/A N/A 17.0 ppb (25) 16.0 ppb (15) N/A N/A 26.6 μg/m3 (82) 82.0
 
April 7, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 22.4 μg/m3 (73) 73.0
 
April 7, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 23.0 ppb (22) N/A N/A 19.1 μg/m3 (66) 66.0
 
April 7, 2021, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (31) N/A N/A 16.5 μg/m3 (61) 61.0
 
April 7, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 43.0 ppb (40) N/A N/A 14.2 μg/m3 (56) 56.0
 
April 6, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 60.0 ppb (68) N/A N/A 14.1 μg/m3 (56) 68.0
 
April 6, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 67.0 ppb (91) N/A N/A 14.3 μg/m3 (56) 91.0
 
April 6, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 68.0 ppb (94) N/A N/A 16.6 μg/m3 (61) 94.0
 
April 6, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 70.0 ppb (100) N/A N/A 19.3 μg/m3 (67) 100.0
 
April 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 71.0 ppb (101) N/A N/A 20.9 μg/m3 (70) 101.0
 
April 6, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 18.8 μg/m3 (66) 94.0
 
April 6, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 20.2 μg/m3 (69) 91.0
 
April 6, 2021, 4 p.m. N/A N/A N/A N/A N/A 12.0 ppb (18) 56.0 ppb (55) N/A N/A 23.2 μg/m3 (75) 75.0
 
April 6, 2021, 3 p.m. N/A N/A N/A N/A N/A 24.0 ppb (35) 31.0 ppb (29) N/A N/A 30.5 μg/m3 (90) 90.0
 
April 6, 2021, 2 p.m. N/A N/A N/A N/A N/A 57.0 ppb (78) 12.0 ppb (12) N/A N/A 46.5 μg/m3 (129) 129.0
 
April 6, 2021, 1 p.m. N/A N/A N/A N/A N/A 70.0 ppb (94) 7.0 ppb (7) N/A N/A 44.1 μg/m3 (123) 123.0
 
April 6, 2021, noon N/A N/A N/A N/A N/A 12.0 ppb (18) 7.0 ppb (7) N/A N/A 37.6 μg/m3 (107) 107.0
 
April 6, 2021, 11 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 3.0 ppb (3) N/A N/A 27.2 μg/m3 (83) 83.0
 
April 6, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 24.7 μg/m3 (78) 78.0
 
April 6, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 3.0 ppb (3) N/A N/A 24.1 μg/m3 (77) 77.0
 
April 6, 2021, 8 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 4.0 ppb (4) N/A N/A 25.4 μg/m3 (79) 79.0
 
April 6, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 4.0 ppb (4) N/A N/A 26.9 μg/m3 (83) 83.0
 
April 6, 2021, 6 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 7.0 ppb (7) N/A N/A 28.3 μg/m3 (86) 86.0
 
April 6, 2021, 5 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 17.0 ppb (16) N/A N/A 26.0 μg/m3 (81) 81.0
 
April 6, 2021, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 18.0 ppb (17) N/A N/A 28.4 μg/m3 (86) 86.0
 
April 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 24.9 μg/m3 (78) 78.0
 
April 6, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 48.0 ppb (45) N/A N/A 21.9 μg/m3 (72) 72.0
 
April 6, 2021, 1 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 51.0 ppb (48) N/A N/A 21.6 μg/m3 (71) 71.0
 
April 6, 2021, midnight N/A N/A N/A N/A N/A 3.0 ppb (5) 47.0 ppb (44) N/A N/A 22.1 μg/m3 (73) 73.0
 
April 5, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 60.0 ppb (68) N/A N/A 19.9 μg/m3 (68) 68.0
 
April 5, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 65.0 ppb (84) N/A N/A 19.1 μg/m3 (66) 84.0
 
April 5, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 66.0 ppb (87) N/A N/A 17.9 μg/m3 (64) 87.0
 
April 5, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 67.0 ppb (91) N/A N/A 16.1 μg/m3 (60) 91.0
 
April 5, 2021, 7 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 67.0 ppb (91) N/A N/A 16.2 μg/m3 (60) 91.0
 
April 5, 2021, 6 p.m. N/A N/A N/A N/A N/A 10.0 ppb (15) 58.0 ppb (61) N/A N/A N/A 61.0
 
April 5, 2021, 5 p.m. N/A N/A N/A N/A N/A 22.0 ppb (32) 46.0 ppb (43) N/A N/A 11.3 μg/m3 (48) 48.0
 
April 5, 2021, 4 p.m. N/A N/A N/A N/A N/A 38.0 ppb (54) 40.0 ppb (38) N/A N/A 10.8 μg/m3 (46) 54.0
 
April 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 18.3 μg/m3 (65) 65.0
 
April 5, 2021, 2 p.m. N/A N/A N/A N/A N/A 95.0 ppb (110) 22.0 ppb (21) N/A N/A 36.0 μg/m3 (103) 110.0
 
April 5, 2021, 1 p.m. N/A N/A N/A N/A N/A 48.0 ppb (67) 12.0 ppb (12) N/A N/A 32.1 μg/m3 (94) 94.0
 
April 5, 2021, noon N/A N/A N/A N/A N/A 21.0 ppb (30) 8.0 ppb (8) N/A N/A 26.4 μg/m3 (82) 82.0
 
April 5, 2021, 11 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 4.0 ppb (4) N/A N/A 19.7 μg/m3 (67) 67.0
 
April 5, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 16.1 μg/m3 (60) 60.0
 
April 5, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 6.0 ppb (6) N/A N/A 15.6 μg/m3 (59) 59.0
 
April 5, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 14.9 μg/m3 (57) 57.0
 
April 5, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 12.0 ppb (12) N/A N/A 14.1 μg/m3 (56) 56.0
 
April 5, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 13.5 μg/m3 (54) 54.0
 
April 5, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 13.9 μg/m3 (55) 55.0
 
April 5, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 12.6 μg/m3 (53) 53.0
 
April 5, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 13.2 μg/m3 (54) 54.0
 
April 5, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 19.0 ppb (18) N/A N/A 13.0 μg/m3 (53) 53.0
 
April 5, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 42.0 ppb (39) N/A N/A 11.6 μg/m3 (49) 49.0
 
April 5, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 55.0 ppb (51) N/A N/A 11.4 μg/m3 (48) 51.0
 
April 4, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 59.0 ppb (65) N/A N/A 11.3 μg/m3 (48) 65.0
 
April 4, 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 12.3 μg/m3 (52) 71.0
 
April 4, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 62.0 ppb (74) N/A N/A 13.8 μg/m3 (55) 74.0
 
April 4, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 61.0 ppb (71) N/A N/A 13.7 μg/m3 (55) 71.0
 
April 4, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 61.0 ppb (71) N/A N/A 13.7 μg/m3 (55) 71.0
 
April 4, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 59.0 ppb (65) N/A N/A 13.9 μg/m3 (55) 65.0
 
April 4, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 59.0 ppb (65) N/A N/A 15.6 μg/m3 (59) 65.0
 
April 4, 2021, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 57.0 ppb (58) N/A N/A 17.6 μg/m3 (63) 63.0
 
April 4, 2021, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 52.0 ppb (49) N/A N/A 16.4 μg/m3 (61) 61.0
 
April 4, 2021, 2 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 45.0 ppb (42) N/A N/A 13.7 μg/m3 (55) 55.0
 
April 4, 2021, 1 p.m. N/A N/A N/A N/A N/A 24.0 ppb (35) 26.0 ppb (25) N/A N/A 18.7 μg/m3 (65) 65.0
 
April 4, 2021, noon N/A N/A N/A N/A N/A 22.0 ppb (32) 13.0 ppb (13) N/A N/A 14.8 μg/m3 (57) 57.0
 
April 4, 2021, 11 a.m. N/A N/A N/A N/A N/A 24.0 ppb (35) 8.0 ppb (8) N/A N/A 13.3 μg/m3 (54) 54.0
 
April 4, 2021, 10 a.m. N/A N/A N/A N/A N/A 26.0 ppb (38) N/A N/A N/A 17.1 μg/m3 (62) 62.0
 
April 4, 2021, 9 a.m. N/A N/A N/A N/A N/A 12.0 ppb (18) 12.0 ppb (12) N/A N/A 12.8 μg/m3 (53) 53.0
 
April 4, 2021, 8 a.m. N/A N/A N/A N/A N/A 8.0 ppb (12) 17.0 ppb (16) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 4, 2021, 7 a.m. N/A N/A N/A N/A N/A 9.0 ppb (13) 19.0 ppb (18) N/A N/A 11.7 μg/m3 (49) 49.0
 
April 4, 2021, 6 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 26.0 ppb (25) N/A N/A 8.8 μg/m3 (37) 37.0
 
April 4, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 6.3 μg/m3 (27) 34.0
 
April 4, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 6.3 μg/m3 (27) 36.0
 
April 4, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 5.7 μg/m3 (24) 36.0
 
April 4, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A N/A 5.7 μg/m3 (24) 38.0
 
April 4, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 46.0 ppb (43) N/A N/A 6.0 μg/m3 (25) 43.0
 
April 4, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 49.0 ppb (46) N/A N/A 5.8 μg/m3 (25) 46.0
 
April 3, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 50.0 ppb (47) N/A N/A 5.7 μg/m3 (24) 47.0
 
April 3, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 51.0 ppb (48) N/A N/A 6.1 μg/m3 (26) 48.0
 
April 3, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 52.0 ppb (49) N/A N/A 6.3 μg/m3 (27) 49.0
 
April 3, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 51.0 ppb (48) N/A N/A 6.0 μg/m3 (25) 48.0
 
April 3, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 50.0 ppb (47) N/A N/A 6.0 μg/m3 (25) 47.0
 
April 3, 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 6.4 μg/m3 (27) 46.0
 
April 3, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 48.0 ppb (45) N/A N/A 6.5 μg/m3 (28) 45.0
 
April 3, 2021, 4 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 45.0 ppb (42) N/A N/A 6.7 μg/m3 (28) 42.0
 
April 3, 2021, 3 p.m. N/A N/A N/A N/A N/A 12.0 ppb (18) 35.0 ppb (33) N/A N/A 9.4 μg/m3 (40) 40.0
 
April 3, 2021, 2 p.m. N/A N/A N/A N/A N/A 18.0 ppb (26) 23.0 ppb (22) N/A N/A 15.7 μg/m3 (59) 59.0
 
April 3, 2021, 1 p.m. N/A N/A N/A N/A N/A 18.0 ppb (26) 12.0 ppb (12) N/A N/A 21.7 μg/m3 (72) 72.0
 
April 3, 2021, noon N/A N/A N/A N/A N/A 6.0 ppb (9) 8.0 ppb (8) N/A N/A 19.5 μg/m3 (67) 67.0
 
April 3, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 4.0 ppb (4) N/A N/A 14.1 μg/m3 (56) 56.0