ID: 1349

AQSQID: 390810017

Site Name: Steubenville

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

Updated: May 27, 2020, 10:33 p.m.

Location: Steubenville (Pleasant Heights), OH

Reporting: True, Located: True

Current AQI: 33.0

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
May 20, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.1 μg/m3 (0) 38.0
 
May 20, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.1 μg/m3 (0) 38.0
 
May 20, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.1 μg/m3 (0) 38.0
 
May 20, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.0 μg/m3 (0) 37.0
 
May 20, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.3 μg/m3 (1) 34.0
 
May 20, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 2.9 μg/m3 (12) 32.0
 
May 20, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.6 μg/m3 (11) 31.0
 
May 20, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.3 μg/m3 (14) 28.0
 
May 20, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 6.2 μg/m3 (26) 26.0
 
May 20, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 5.1 μg/m3 (21) 28.0
 
May 20, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 6.2 μg/m3 (26) 30.0
 
May 20, 2020, 10 a.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
 
May 20, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 1.3 μg/m3 (5) 33.0
 
May 20, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 2.1 μg/m3 (9) 34.0
 
May 20, 2020, 7 a.m. N/A N/A N/A N/A N/A -1.0 ppb (0) 45.0 ppb (35) N/A N/A 4.4 μg/m3 (18) 35.0
 
May 20, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 4.1 μg/m3 (17) 35.0
 
May 20, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 4.1 μg/m3 (17) 35.0
 
May 20, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.1 μg/m3 (13) 35.0
 
May 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 3.9 μg/m3 (16) 33.0
 
May 20, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 4.7 μg/m3 (20) 32.0
 
May 20, 2020, 1 a.m. N/A N/A N/A N/A N/A -1.0 ppb (0) 48.0 ppb (37) N/A N/A 2.8 μg/m3 (12) 37.0
 
May 20, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 3.1 μg/m3 (13) 40.0
 
May 19, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 3.9 μg/m3 (16) 38.0
 
May 19, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 4.4 μg/m3 (18) 38.0
 
May 19, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 4.4 μg/m3 (18) 38.0
 
May 19, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 2.4 μg/m3 (10) 36.0
 
May 19, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 1.3 μg/m3 (5) 35.0
 
May 19, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 0.8 μg/m3 (3) 35.0
 
May 19, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 0.1 μg/m3 (0) 35.0
 
May 19, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 0.8 μg/m3 (3) 32.0
 
May 19, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.8 μg/m3 (8) 30.0
 
May 19, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.6 μg/m3 (7) 23.0
 
May 19, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 0.1 μg/m3 (0) 22.0
 
May 19, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 0.4 μg/m3 (2) 22.0
 
May 19, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 0.9 μg/m3 (4) 25.0
 
May 19, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 0.4 μg/m3 (2) 24.0
 
May 19, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 0.1 μg/m3 (0) 24.0
 
May 19, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 0.1 μg/m3 (0) 26.0
 
May 19, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 0.1 μg/m3 (0) 25.0
 
May 19, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 0.1 μg/m3 (0) 26.0
 
May 19, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 0.1 μg/m3 (0) 25.0
 
May 19, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 0.6 μg/m3 (2) 23.0
 
May 19, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 0.4 μg/m3 (2) 24.0
 
May 19, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 2.9 μg/m3 (12) 24.0
 
May 19, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 2.4 μg/m3 (10) 24.0
 
May 19, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 1.4 μg/m3 (6) 26.0
 
May 18, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 3.2 μg/m3 (13) 30.0
 
May 18, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 1.2 μg/m3 (5) 34.0
 
May 18, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 0.7 μg/m3 (3) 35.0
 
May 18, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 4.8 μg/m3 (20) 36.0
 
May 18, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 9.0 μg/m3 (38) 38.0
 
May 18, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 8.5 μg/m3 (35) 35.0
 
May 18, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 5.1 μg/m3 (21) 35.0
 
May 18, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 2.7 μg/m3 (11) 33.0
 
May 18, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 2.5 μg/m3 (10) 10.0
 
May 18, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.5 μg/m3 (19) 19.0
 
May 18, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 5.7 μg/m3 (24) 24.0
 
May 18, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 4.9 μg/m3 (20) 20.0
 
May 18, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 4.1 μg/m3 (17) 17.0
 
May 18, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 2.9 μg/m3 (12) 17.0
 
May 18, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 3.4 μg/m3 (14) 19.0
 
May 18, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 4.7 μg/m3 (20) 20.0
 
May 18, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 2.6 μg/m3 (11) 20.0
 
May 18, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 2.6 μg/m3 (11) 21.0
 
May 18, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.2 μg/m3 (22) 23.0
 
May 18, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 5.4 μg/m3 (23) 25.0
 
May 18, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 4.7 μg/m3 (20) 26.0
 
May 18, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 4.9 μg/m3 (20) 27.0
 
May 18, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 3.4 μg/m3 (14) 27.0
 
May 18, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 2.7 μg/m3 (11) 28.0
 
May 17, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 5.5 μg/m3 (23) 30.0
 
May 17, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 6.6 μg/m3 (28) 34.0
 
May 17, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 5.3 μg/m3 (22) 36.0
 
May 17, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 5.9 μg/m3 (25) 36.0
 
May 17, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 5.6 μg/m3 (23) 39.0
 
May 17, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 4.6 μg/m3 (19) 38.0
 
May 17, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 5.6 μg/m3 (23) 38.0
 
May 17, 2020, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 45.0 ppb (35) N/A N/A 4.5 μg/m3 (19) 35.0
 
May 17, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 4.7 μg/m3 (20) 29.0
 
May 17, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
May 17, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 3.9 μg/m3 (16) 20.0
 
May 17, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 5.5 μg/m3 (23) 23.0
 
May 17, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 6.7 μg/m3 (28) 28.0
 
May 17, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 7.0 μg/m3 (29) 29.0
 
May 17, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 6.0 μg/m3 (25) 25.0
 
May 17, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 7.0 μg/m3 (29) 29.0
 
May 17, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A 4.9 μg/m3 (20) 20.0
 
May 17, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 2.9 μg/m3 (12) 12.0
 
May 17, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 4.6 μg/m3 (19) 19.0
 
May 17, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 10.0 ppb (8) N/A N/A 3.6 μg/m3 (15) 15.0
 
May 17, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 2.6 μg/m3 (11) 12.0
 
May 17, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 1.6 μg/m3 (7) 17.0
 
May 17, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 0.1 μg/m3 (0) 21.0
 
May 17, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 0.1 μg/m3 (0) 29.0
 
May 16, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.1 μg/m3 (0) 34.0
 
May 16, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 0.4 μg/m3 (2) 36.0
 
May 16, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.2 μg/m3 (1) 38.0
 
May 16, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.7 μg/m3 (3) 38.0
 
May 16, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
May 16, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 2.7 μg/m3 (11) 35.0
 
May 16, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 0.2 μg/m3 (1) 32.0
 
May 16, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 0.1 μg/m3 (0) 29.0
 
May 16, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 0.1 μg/m3 (0) 28.0
 
May 16, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 0.1 μg/m3 (0) 25.0
 
May 16, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 1.6 μg/m3 (7) 24.0
 
May 16, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 1.4 μg/m3 (6) 17.0
 
May 16, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 0.1 μg/m3 (0) 6.0
 
May 16, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 9.0 ppb (7) N/A N/A 0.1 μg/m3 (0) 7.0
 
May 16, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 0.3 μg/m3 (1) 10.0
 
May 16, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 1.1 μg/m3 (5) 14.0
 
May 16, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 0.1 μg/m3 (0) 15.0
 
May 16, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 0.1 μg/m3 (0) 17.0
 
May 16, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 0.4 μg/m3 (2) 16.0
 
May 16, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 0.4 μg/m3 (2) 18.0
 
May 16, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 1.6 μg/m3 (7) 21.0
 
May 16, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.6 μg/m3 (15) 23.0
 
May 16, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 3.4 μg/m3 (14) 14.0
 
May 16, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 1.6 μg/m3 (7) 15.0
 
May 15, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 0.6 μg/m3 (2) 25.0
 
May 15, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 2.4 μg/m3 (10) 27.0
 
May 15, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 4.5 μg/m3 (19) 32.0
 
May 15, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.5 μg/m3 (15) 32.0
 
May 15, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 3.6 μg/m3 (15) 33.0
 
May 15, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 3.6 μg/m3 (15) 35.0
 
May 15, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.3 μg/m3 (14) 35.0
 
May 15, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 5.9 μg/m3 (25) 34.0
 
May 15, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 5.1 μg/m3 (21) 33.0
 
May 15, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 3.3 μg/m3 (14) 31.0
 
May 15, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 6.1 μg/m3 (25) 26.0
 
May 15, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) N/A N/A 8.9 μg/m3 (37) 37.0
 
May 15, 2020, 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 7.0 μg/m3 (29) 29.0
 
May 15, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 5.0 ppb (4) N/A N/A 5.5 μg/m3 (23) 23.0
 
May 15, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 6.8 μg/m3 (28) 28.0
 
May 15, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 5.2 μg/m3 (22) 22.0
 
May 15, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 10.0 ppb (8) N/A N/A 2.7 μg/m3 (11) 11.0
 
May 15, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 5.5 μg/m3 (23) 23.0
 
May 15, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
May 15, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 4.7 μg/m3 (20) 20.0
 
May 15, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 4.2 μg/m3 (18) 18.0
 
May 15, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 4.2 μg/m3 (18) 18.0
 
May 15, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 4.7 μg/m3 (20) 25.0
 
May 15, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 6.3 μg/m3 (26) 26.0
 
May 14, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 29.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
May 14, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 3.2 μg/m3 (13) 30.0
 
May 14, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 6.1 μg/m3 (25) 33.0
 
May 14, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 9.7 μg/m3 (40) 40.0
 
May 14, 2020, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 38.0 ppb (29) N/A N/A 12.1 μg/m3 (50) 50.0
 
May 14, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 9.9 μg/m3 (41) 41.0
 
May 14, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 10.3 μg/m3 (43) 43.0
 
May 14, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 11.3 μg/m3 (47) 47.0
 
May 14, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 8.8 μg/m3 (37) 37.0
 
May 14, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) N/A N/A 16.4 μg/m3 (59) 59.0
 
May 14, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 6.0 ppb (5) N/A N/A 21.9 μg/m3 (71) 71.0
 
May 14, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 19.1 μg/m3 (65) 65.0
 
May 14, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 19.4 μg/m3 (66) 66.0
 
May 14, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 11.0 μg/m3 (46) 46.0
 
May 14, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 12.3 μg/m3 (51) 51.0
 
May 14, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 14.0 μg/m3 (54) 54.0
 
May 14, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 19.9 μg/m3 (67) 67.0
 
May 14, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 20.4 μg/m3 (68) 68.0
 
May 14, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 19.6 μg/m3 (66) 66.0
 
May 14, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 12.5 μg/m3 (51) 51.0
 
May 14, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 15.6 μg/m3 (58) 58.0
 
May 14, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 16.6 μg/m3 (60) 60.0
 
May 14, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 8.3 μg/m3 (35) 35.0
 
May 14, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 5.2 μg/m3 (22) 34.0
 
May 13, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 3.5 μg/m3 (15) 38.0
 
May 13, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 56.0 ppb (43) N/A N/A 5.6 μg/m3 (23) 43.0