AQSQID: 511130003

Site Name: Shenandoah Np

Location: Madison Co, VA

Reporting: True, Located: True

Current AQI: 36.0

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
Sept. 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 6.8 μg/m3 (28) 36.0
 
Sept. 23, 2019, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 9.3 μg/m3 (39) 39.0
 
Sept. 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 8.6 μg/m3 (36) 38.0
 
Sept. 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 7.7 μg/m3 (32) 37.0
 
Sept. 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 8.9 μg/m3 (37) 38.0
 
Sept. 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 9.5 μg/m3 (40) 40.0
 
Sept. 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 10.6 μg/m3 (44) 44.0
 
Sept. 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 12.1 μg/m3 (50) 50.0
 
Sept. 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 9.1 μg/m3 (38) 40.0
 
Sept. 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 10.5 μg/m3 (44) 44.0
 
Sept. 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 5.4 μg/m3 (23) 38.0
 
Sept. 22, 2019, noon N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 16.5 μg/m3 (60) 60.0
 
Sept. 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 10.6 μg/m3 (44) 44.0
 
Sept. 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 10.4 μg/m3 (43) 43.0
 
Sept. 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 9.5 μg/m3 (40) 41.0
 
Sept. 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 7.9 μg/m3 (33) 39.0
 
Sept. 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 8.1 μg/m3 (34) 38.0
 
Sept. 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 13.3 μg/m3 (53) 53.0
 
Sept. 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 10.1 μg/m3 (42) 42.0
 
Sept. 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 8.8 μg/m3 (37) 41.0
 
Sept. 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 9.5 μg/m3 (40) 41.0
 
Sept. 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 9.5 μg/m3 (40) 42.0
 
Sept. 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 10.4 μg/m3 (43) 43.0
 
Sept. 22, 2019, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 9.8 μg/m3 (41) 42.0
 
Sept. 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 9.0 μg/m3 (38) 42.0
 
Sept. 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 8.9 μg/m3 (37) 42.0
 
Sept. 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 10.6 μg/m3 (44) 44.0
 
Sept. 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 9.1 μg/m3 (38) 42.0
 
Sept. 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 8.0 μg/m3 (33) 43.0
 
Sept. 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 8.8 μg/m3 (37) 43.0
 
Sept. 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 7.8 μg/m3 (32) 42.0
 
Sept. 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 7.6 μg/m3 (32) 40.0
 
Sept. 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 8.9 μg/m3 (37) 40.0
 
Sept. 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 10.9 μg/m3 (45) 45.0
 
Sept. 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 8.3 μg/m3 (35) 42.0
 
Sept. 21, 2019, noon N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 11.2 μg/m3 (47) 47.0
 
Sept. 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 8.7 μg/m3 (36) 39.0
 
Sept. 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 8.5 μg/m3 (35) 41.0
 
Sept. 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 9.3 μg/m3 (39) 41.0
 
Sept. 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 6.7 μg/m3 (28) 38.0
 
Sept. 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 4.9 μg/m3 (20) 35.0
 
Sept. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.3 μg/m3 (22) 37.0
 
Sept. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 5.3 μg/m3 (22) 38.0
 
Sept. 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 5.3 μg/m3 (22) 38.0
 
Sept. 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.1 μg/m3 (21) 37.0
 
Sept. 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.1 μg/m3 (21) 37.0
 
Sept. 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 4.5 μg/m3 (19) 36.0
 
Sept. 21, 2019, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
Sept. 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 4.5 μg/m3 (19) 36.0
 
Sept. 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 5.4 μg/m3 (23) 35.0
 
Sept. 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
Sept. 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 7.7 μg/m3 (32) 32.0
 
Sept. 20, 2019, 7 p.m. 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
 
Sept. 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 4.9 μg/m3 (20) 33.0
 
Sept. 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 2.1 μg/m3 (9) 37.0
 
Sept. 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 3.6 μg/m3 (15) 35.0
 
Sept. 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 4.8 μg/m3 (20) 34.0
 
Sept. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
Sept. 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 4.1 μg/m3 (17) 31.0
 
Sept. 20, 2019, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 4.6 μg/m3 (19) 31.0
 
Sept. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 3.7 μg/m3 (15) 32.0
 
Sept. 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 3.5 μg/m3 (15) 33.0
 
Sept. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 3.5 μg/m3 (15) 32.0
 
Sept. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 2.6 μg/m3 (11) 32.0
 
Sept. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 2.8 μg/m3 (12) 32.0
 
Sept. 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.4 μg/m3 (10) 28.0
 
Sept. 20, 2019, 5 a.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
 
Sept. 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 1.7 μg/m3 (7) 30.0
 
Sept. 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 1.6 μg/m3 (7) 32.0
 
Sept. 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.7 μg/m3 (11) 32.0
 
Sept. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 2.5 μg/m3 (10) 33.0
 
Sept. 20, 2019, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 2.4 μg/m3 (10) 33.0
 
Sept. 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.4 μg/m3 (10) 32.0
 
Sept. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 3.4 μg/m3 (14) 30.0
 
Sept. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 3.2 μg/m3 (13) 31.0
 
Sept. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 3.2 μg/m3 (13) 31.0
 
Sept. 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.4 μg/m3 (10) 32.0
 
Sept. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 2.2 μg/m3 (9) 31.0
 
Sept. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 2.5 μg/m3 (10) 30.0
 
Sept. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 3.2 μg/m3 (13) 28.0
 
Sept. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 3.2 μg/m3 (13) 26.0
 
Sept. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 2.7 μg/m3 (11) 25.0
 
Sept. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 3.8 μg/m3 (16) 25.0
 
Sept. 19, 2019, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 3.2 μg/m3 (13) 25.0
 
Sept. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.3 μg/m3 (10) 24.0
 
Sept. 19, 2019, 10 a.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
 
Sept. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 2.0 μg/m3 (8) 25.0
 
Sept. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 3.6 μg/m3 (15) 27.0
 
Sept. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 1.9 μg/m3 (8) 28.0
 
Sept. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 3.5 μg/m3 (15) 28.0
 
Sept. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 4.3 μg/m3 (18) 35.0
 
Sept. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.8 μg/m3 (12) 32.0
 
Sept. 18, 2019, 4 p.m. 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
 
Sept. 18, 2019, 3 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
 
Sept. 18, 2019, 2 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
 
Sept. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.3 μg/m3 (10) 27.0
 
Sept. 18, 2019, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 2.4 μg/m3 (10) 30.0
 
Sept. 18, 2019, 11 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
 
Sept. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 1.3 μg/m3 (5) 35.0
 
Sept. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 2.0 μg/m3 (8) 36.0
 
Sept. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0
 
Sept. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 3.6 μg/m3 (15) 35.0
 
Sept. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0
 
Sept. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 3.7 μg/m3 (15) 35.0
 
Sept. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
Sept. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 4.7 μg/m3 (20) 35.0
 
Sept. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 6.1 μg/m3 (25) 37.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 5.7 μg/m3 (24) 40.0
 
Sept. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 6.4 μg/m3 (27) 40.0
 
Sept. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
Sept. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 6.6 μg/m3 (28) 36.0
 
Sept. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 8.4 μg/m3 (35) 36.0
 
Sept. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 8.1 μg/m3 (34) 37.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 8.5 μg/m3 (35) 35.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 7.2 μg/m3 (30) 34.0
 
Sept. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 8.0 μg/m3 (33) 37.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 8.7 μg/m3 (36) 36.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 7.8 μg/m3 (32) 35.0
 
Sept. 17, 2019, noon N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 7.1 μg/m3 (30) 37.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 6.9 μg/m3 (29) 38.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 6.8 μg/m3 (28) 36.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 6.4 μg/m3 (27) 28.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 5.9 μg/m3 (25) 32.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 5.6 μg/m3 (23) 35.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.5 μg/m3 (23) 37.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 5.7 μg/m3 (24) 39.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 5.1 μg/m3 (21) 39.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 5.9 μg/m3 (25) 38.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 3.7 μg/m3 (15) 39.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 2.8 μg/m3 (12) 38.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 0.6 μg/m3 (2) 34.0
 
Sept. 16, 2019, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 5.6 μg/m3 (23) 31.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 5.5 μg/m3 (23) 32.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 5.7 μg/m3 (24) 32.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 4.8 μg/m3 (20) 33.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 4.9 μg/m3 (20) 35.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 4.1 μg/m3 (17) 36.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 4.2 μg/m3 (18) 35.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 4.4 μg/m3 (18) 34.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 4.9 μg/m3 (20) 35.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 3.2 μg/m3 (13) 34.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 3.2 μg/m3 (13) 38.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 2.3 μg/m3 (10) 38.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 1.4 μg/m3 (6) 36.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 2.2 μg/m3 (9) 35.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 2.1 μg/m3 (9) 35.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 1.4 μg/m3 (6) 35.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 4.5 μg/m3 (19) 32.0
 
Sept. 15, 2019, noon N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 4.7 μg/m3 (20) 32.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.8 μg/m3 (12) 32.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 1.6 μg/m3 (7) 31.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.1 μg/m3 (13) 24.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 3.7 μg/m3 (15) 20.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.5 μg/m3 (15) 23.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 5.0 μg/m3 (21) 24.0
 
Sept. 15, 2019, midnight 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
 
Sept. 14, 2019, 9 p.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
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 1.7 μg/m3 (7) 19.0
 
Sept. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 4.1 μg/m3 (17) 20.0
 
Sept. 14, 2019, 6 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
 
Sept. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 3.5 μg/m3 (15) 27.0
 
Sept. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.3 μg/m3 (10) 27.0
 
Sept. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 3.7 μg/m3 (15) 28.0
 
Sept. 14, 2019, 1 p.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
 
Sept. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 0.7 μg/m3 (3) 23.0