AQSQID: 511130003

Site Name: Shenandoah Np

Location: Madison Co, VA

Reporting: True, Located: True

Current AQI: 28.0

Madison Co VA, US: 38.5231, -78.4347

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.1 μg/m3 (17) 28.0
 
Jan. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 5.1 μg/m3 (21) 28.0
 
Jan. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
Jan. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 4.2 μg/m3 (18) 30.0
 
Jan. 16, 2019, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 3.4 μg/m3 (14) 31.0
 
Jan. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 3.8 μg/m3 (16) 31.0
 
Jan. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
Jan. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.3 μg/m3 (10) 32.0
 
Jan. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
Jan. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
Jan. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.5 μg/m3 (10) 32.0
 
Jan. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 3.9 μg/m3 (16) 30.0
 
Jan. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 5.3 μg/m3 (22) 28.0
 
Jan. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
Jan. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 6.3 μg/m3 (26) 29.0
 
Jan. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 6.3 μg/m3 (26) 29.0
 
Jan. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 6.6 μg/m3 (28) 29.0
 
Jan. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 6.7 μg/m3 (28) 30.0
 
Jan. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 7.2 μg/m3 (30) 30.0
 
Jan. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 6.5 μg/m3 (27) 30.0
 
Jan. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 6.3 μg/m3 (26) 30.0
 
Jan. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 6.4 μg/m3 (27) 29.0
 
Jan. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
Jan. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 5.2 μg/m3 (22) 26.0
 
Jan. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 5.5 μg/m3 (23) 25.0
 
Jan. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 5.3 μg/m3 (22) 24.0
 
Jan. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 15, 2019, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 6.1 μg/m3 (25) 25.0
 
Jan. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 6.9 μg/m3 (29) 29.0
 
Jan. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 6.8 μg/m3 (28) 28.0
 
Jan. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 5.8 μg/m3 (24) 24.0
 
Jan. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A N/A 24.0
 
Jan. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A N/A 24.0
 
Jan. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A N/A 26.0
 
Jan. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 4.5 μg/m3 (19) 32.0
 
Jan. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 3.8 μg/m3 (16) 32.0
 
Jan. 14, 2019, noon N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 2.3 μg/m3 (10) 34.0
 
Jan. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 2.7 μg/m3 (11) 34.0
 
Jan. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 1.8 μg/m3 (8) 35.0
 
Jan. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 2.0 μg/m3 (8) 34.0
 
Jan. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.9 μg/m3 (20) 28.0
 
Jan. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 4.1 μg/m3 (17) 30.0
 
Jan. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 4.3 μg/m3 (18) 28.0
 
Jan. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 5.4 μg/m3 (23) 25.0
 
Jan. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 4.5 μg/m3 (19) 24.0
 
Jan. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 2.9 μg/m3 (12) 25.0
 
Jan. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.7 μg/m3 (11) 26.0
 
Jan. 14, 2019, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.9 μg/m3 (12) 27.0
 
Jan. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 3.6 μg/m3 (15) 29.0
 
Jan. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 3.8 μg/m3 (16) 28.0
 
Jan. 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 4.7 μg/m3 (20) 25.0
 
Jan. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.3 μg/m3 (18) 27.0
 
Jan. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.8 μg/m3 (12) 27.0
 
Jan. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 3.4 μg/m3 (14) 29.0
 
Jan. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 1.6 μg/m3 (7) 28.0
 
Jan. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 1.9 μg/m3 (8) 28.0
 
Jan. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
Jan. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 3.9 μg/m3 (16) 28.0
 
Jan. 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 3.9 μg/m3 (16) 25.0
 
Jan. 13, 2019, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 4.5 μg/m3 (19) 22.0
 
Jan. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 6.8 μg/m3 (28) 28.0
 
Jan. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 13, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 6.9 μg/m3 (29) 29.0
 
Jan. 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 6.5 μg/m3 (27) 27.0
 
Jan. 13, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 5.2 μg/m3 (22) 28.0
 
Jan. 13, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.1 μg/m3 (17) 28.0
 
Jan. 13, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 2.5 μg/m3 (10) 31.0
 
Jan. 13, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 3.1 μg/m3 (13) 31.0
 
Jan. 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 4.4 μg/m3 (18) 29.0
 
Jan. 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.8 μg/m3 (20) 27.0
 
Jan. 13, 2019, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 4.1 μg/m3 (17) 29.0
 
Jan. 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 5.4 μg/m3 (23) 29.0
 
Jan. 12, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 5.1 μg/m3 (21) 28.0
 
Jan. 12, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 3.5 μg/m3 (15) 30.0
 
Jan. 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 3.3 μg/m3 (14) 29.0
 
Jan. 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 4.9 μg/m3 (20) 28.0
 
Jan. 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.8 μg/m3 (20) 28.0
 
Jan. 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.9 μg/m3 (20) 28.0
 
Jan. 12, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.7 μg/m3 (11) 28.0
 
Jan. 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.6 μg/m3 (19) 28.0
 
Jan. 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 12, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 12, 2019, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 5.4 μg/m3 (23) 25.0
 
Jan. 12, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 5.6 μg/m3 (23) 26.0
 
Jan. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 5.7 μg/m3 (24) 27.0
 
Jan. 12, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.5 μg/m3 (19) 28.0
 
Jan. 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 5.1 μg/m3 (21) 27.0
 
Jan. 12, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 5.2 μg/m3 (22) 27.0
 
Jan. 12, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 6.1 μg/m3 (25) 28.0
 
Jan. 12, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 5.3 μg/m3 (22) 27.0
 
Jan. 12, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 5.7 μg/m3 (24) 27.0
 
Jan. 12, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.6 μg/m3 (19) 27.0
 
Jan. 12, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 5.7 μg/m3 (24) 27.0
 
Jan. 12, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 6.1 μg/m3 (25) 27.0
 
Jan. 12, 2019, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 5.7 μg/m3 (24) 28.0
 
Jan. 11, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.8 μg/m3 (20) 28.0
 
Jan. 11, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
Jan. 11, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 5.3 μg/m3 (22) 28.0
 
Jan. 11, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 5.2 μg/m3 (22) 28.0
 
Jan. 11, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 5.8 μg/m3 (24) 29.0
 
Jan. 11, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
Jan. 11, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.2 μg/m3 (18) 28.0
 
Jan. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 3.9 μg/m3 (16) 27.0
 
Jan. 11, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.3 μg/m3 (18) 27.0
 
Jan. 11, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 6.1 μg/m3 (25) 26.0
 
Jan. 11, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 6.1 μg/m3 (25) 26.0
 
Jan. 11, 2019, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 5.2 μg/m3 (22) 25.0
 
Jan. 11, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 5.9 μg/m3 (25) 25.0
 
Jan. 11, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 11, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 5.4 μg/m3 (23) 25.0
 
Jan. 11, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.6 μg/m3 (19) 25.0
 
Jan. 11, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.5 μg/m3 (19) 25.0
 
Jan. 11, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
Jan. 11, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.7 μg/m3 (20) 25.0
 
Jan. 11, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.5 μg/m3 (19) 25.0
 
Jan. 11, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.8 μg/m3 (20) 25.0
 
Jan. 11, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 5.0 μg/m3 (21) 24.0
 
Jan. 11, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 5.2 μg/m3 (22) 24.0
 
Jan. 11, 2019, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 4.7 μg/m3 (20) 23.0
 
Jan. 10, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 4.9 μg/m3 (20) 23.0
 
Jan. 10, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 4.0 μg/m3 (17) 24.0
 
Jan. 10, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 4.6 μg/m3 (19) 24.0
 
Jan. 10, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.8 μg/m3 (16) 24.0
 
Jan. 10, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 4.8 μg/m3 (20) 24.0
 
Jan. 10, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.4 μg/m3 (14) 24.0
 
Jan. 10, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.8 μg/m3 (16) 24.0
 
Jan. 10, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 2.4 μg/m3 (10) 23.0
 
Jan. 10, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 2.9 μg/m3 (12) 22.0
 
Jan. 10, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 3.3 μg/m3 (14) 22.0
 
Jan. 10, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 4.4 μg/m3 (18) 22.0
 
Jan. 10, 2019, noon N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 2.8 μg/m3 (12) 22.0
 
Jan. 10, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 5.5 μg/m3 (23) 23.0
 
Jan. 10, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 3.5 μg/m3 (15) 21.0
 
Jan. 10, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 2.4 μg/m3 (10) 21.0
 
Jan. 10, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 1.5 μg/m3 (6) 21.0
 
Jan. 10, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 3.4 μg/m3 (14) 21.0
 
Jan. 10, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 3.6 μg/m3 (15) 21.0
 
Jan. 10, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 3.1 μg/m3 (13) 19.0
 
Jan. 10, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 10, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 3.4 μg/m3 (14) 18.0
 
Jan. 10, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 2.9 μg/m3 (12) 18.0
 
Jan. 10, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 3.2 μg/m3 (13) 18.0
 
Jan. 10, 2019, midnight N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 3.3 μg/m3 (14) 18.0
 
Jan. 9, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
Jan. 9, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 3.2 μg/m3 (13) 19.0
 
Jan. 9, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 2.9 μg/m3 (12) 19.0
 
Jan. 9, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 2.7 μg/m3 (11) 21.0
 
Jan. 9, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 4.9 μg/m3 (20) 23.0
 
Jan. 9, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.1 μg/m3 (13) 23.0
 
Jan. 9, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
Jan. 9, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 2.2 μg/m3 (9) 25.0
 
Jan. 9, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.9 μg/m3 (12) 26.0
 
Jan. 9, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
Jan. 9, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 3.5 μg/m3 (15) 27.0
 
Jan. 9, 2019, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.8 μg/m3 (20) 27.0
 
Jan. 9, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 1.5 μg/m3 (6) 28.0
 
Jan. 9, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.3 μg/m3 (10) 28.0
 
Jan. 9, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.6 μg/m3 (7) 27.0
 
Jan. 9, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.3 μg/m3 (10) 28.0