ID: 880

AQSQID: 511130003

Site Name: Shenandoah Np

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

Updated: Sept. 26, 2020, 12:41 a.m.

Location: Luray (Big Meadows Air Quality Rd), VA

Reporting: True, Located: True

Current AQI: 19.0

Luray (Big Meadows Air Quality Rd) VA, US: 38.5231, -78.4347

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 25, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 0.8 μg/m3 (3) 19.0
 
Sept. 25, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 2.6 μg/m3 (11) 18.0
 
Sept. 25, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.9 μg/m3 (16) 23.0
 
Sept. 25, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
Sept. 25, 2020, 7 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
 
Sept. 25, 2020, 6 p.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. 25, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 3.5 μg/m3 (15) 32.0
 
Sept. 25, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 2.7 μg/m3 (11) 32.0
 
Sept. 25, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 2.1 μg/m3 (9) 33.0
 
Sept. 25, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 5.4 μg/m3 (23) 26.0
 
Sept. 25, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 8.6 μg/m3 (36) 36.0
 
Sept. 25, 2020, noon N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 10.1 μg/m3 (42) 42.0
 
Sept. 25, 2020, 11 a.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. 25, 2020, 10 a.m. 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. 25, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 7.0 μg/m3 (29) 37.0
 
Sept. 25, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 8.1 μg/m3 (34) 39.0
 
Sept. 25, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 8.0 μg/m3 (33) 41.0
 
Sept. 25, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 7.9 μg/m3 (33) 38.0
 
Sept. 25, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 7.9 μg/m3 (33) 38.0
 
Sept. 25, 2020, 4 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. 25, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 6.4 μg/m3 (27) 38.0
 
Sept. 25, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 7.7 μg/m3 (32) 36.0
 
Sept. 25, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 8.4 μg/m3 (35) 40.0
 
Sept. 25, 2020, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 7.0 μg/m3 (29) 39.0
 
Sept. 24, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 6.0 μg/m3 (25) 37.0
 
Sept. 24, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 6.3 μg/m3 (26) 35.0
 
Sept. 24, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 7.2 μg/m3 (30) 33.0
 
Sept. 24, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 6.9 μg/m3 (29) 35.0
 
Sept. 24, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 7.6 μg/m3 (32) 35.0
 
Sept. 24, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 8.0 μg/m3 (33) 38.0
 
Sept. 24, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 7.2 μg/m3 (30) 39.0
 
Sept. 24, 2020, 4 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. 24, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 8.4 μg/m3 (35) 41.0
 
Sept. 24, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 8.2 μg/m3 (34) 40.0
 
Sept. 24, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 9.9 μg/m3 (41) 41.0
 
Sept. 24, 2020, noon N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 8.6 μg/m3 (36) 42.0
 
Sept. 24, 2020, 11 a.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. 24, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 8.2 μg/m3 (34) 40.0
 
Sept. 24, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 8.1 μg/m3 (34) 39.0
 
Sept. 24, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 7.1 μg/m3 (30) 41.0
 
Sept. 24, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 6.5 μg/m3 (27) 42.0
 
Sept. 24, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 5.6 μg/m3 (23) 43.0
 
Sept. 24, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 5.8 μg/m3 (24) 43.0
 
Sept. 24, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 5.2 μg/m3 (22) 41.0
 
Sept. 24, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 6.3 μg/m3 (26) 40.0
 
Sept. 24, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 5.8 μg/m3 (24) 35.0
 
Sept. 24, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 5.3 μg/m3 (22) 32.0
 
Sept. 24, 2020, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 6.3 μg/m3 (26) 32.0
 
Sept. 23, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 4.6 μg/m3 (19) 35.0
 
Sept. 23, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 4.4 μg/m3 (18) 32.0
 
Sept. 23, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 4.4 μg/m3 (18) 31.0
 
Sept. 23, 2020, 8 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. 23, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 2.7 μg/m3 (11) 32.0
 
Sept. 23, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 2.7 μg/m3 (11) 33.0
 
Sept. 23, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 2.9 μg/m3 (12) 34.0
 
Sept. 23, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 2.4 μg/m3 (10) 34.0
 
Sept. 23, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 4.1 μg/m3 (17) 35.0
 
Sept. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.7 μg/m3 (15) 35.0
 
Sept. 23, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 5.3 μg/m3 (22) 36.0
 
Sept. 23, 2020, noon N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 5.3 μg/m3 (22) 35.0
 
Sept. 23, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 4.6 μg/m3 (19) 35.0
 
Sept. 23, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 4.2 μg/m3 (18) 35.0
 
Sept. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.8 μg/m3 (16) 35.0
 
Sept. 23, 2020, 8 a.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. 23, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.1 μg/m3 (13) 35.0
 
Sept. 23, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 3.7 μg/m3 (15) 36.0
 
Sept. 23, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 3.6 μg/m3 (15) 36.0
 
Sept. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.2 μg/m3 (13) 35.0
 
Sept. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.6 μg/m3 (15) 35.0
 
Sept. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 3.8 μg/m3 (16) 35.0
 
Sept. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 3.8 μg/m3 (16) 33.0
 
Sept. 23, 2020, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 4.4 μg/m3 (18) 32.0
 
Sept. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 3.5 μg/m3 (15) 32.0
 
Sept. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 3.3 μg/m3 (14) 32.0
 
Sept. 22, 2020, 9 p.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
 
Sept. 22, 2020, 8 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. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 2.2 μg/m3 (9) 30.0
 
Sept. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 0.8 μg/m3 (3) 29.0
 
Sept. 22, 2020, 5 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
 
Sept. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.8 μg/m3 (12) 12.0
 
Sept. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.5 μg/m3 (10) 28.0
 
Sept. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.6 μg/m3 (11) 28.0
 
Sept. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 2.9 μg/m3 (12) 29.0
 
Sept. 22, 2020, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 4.2 μg/m3 (18) 31.0
 
Sept. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 3.1 μg/m3 (13) 30.0
 
Sept. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.2 μg/m3 (9) 28.0
 
Sept. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.6 μg/m3 (11) 28.0
 
Sept. 22, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 2.6 μg/m3 (11) 29.0
 
Sept. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 2.1 μg/m3 (9) 29.0
 
Sept. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
Sept. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.1 μg/m3 (9) 27.0
 
Sept. 22, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.8 μg/m3 (12) 26.0
 
Sept. 22, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.9 μg/m3 (12) 28.0
 
Sept. 22, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 2.4 μg/m3 (10) 29.0
 
Sept. 22, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 3.2 μg/m3 (13) 32.0
 
Sept. 22, 2020, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 2.9 μg/m3 (12) 29.0
 
Sept. 21, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
Sept. 21, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.8 μg/m3 (8) 27.0
 
Sept. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.9 μg/m3 (12) 28.0
 
Sept. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.1 μg/m3 (9) 28.0
 
Sept. 21, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.9 μg/m3 (8) 27.0
 
Sept. 21, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.1 μg/m3 (9) 27.0
 
Sept. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.0 μg/m3 (8) 26.0
 
Sept. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
Sept. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 2.4 μg/m3 (10) 25.0
 
Sept. 21, 2020, 2 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
 
Sept. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.8 μg/m3 (16) 23.0
 
Sept. 21, 2020, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.4 μg/m3 (14) 23.0
 
Sept. 21, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.6 μg/m3 (11) 24.0
 
Sept. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
Sept. 21, 2020, 9 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. 21, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
Sept. 21, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 1.5 μg/m3 (6) 24.0
 
Sept. 21, 2020, 6 a.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
 
Sept. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 3.4 μg/m3 (14) 26.0
 
Sept. 21, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 3.1 μg/m3 (13) 26.0
 
Sept. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 3.1 μg/m3 (13) 26.0
 
Sept. 21, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 3.7 μg/m3 (15) 26.0
 
Sept. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 3.5 μg/m3 (15) 28.0
 
Sept. 21, 2020, midnight 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
 
Sept. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.7 μg/m3 (11) 27.0
 
Sept. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 2.5 μg/m3 (10) 25.0
 
Sept. 20, 2020, 9 p.m. 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
 
Sept. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.5 μg/m3 (10) 26.0
 
Sept. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.1 μg/m3 (9) 26.0
 
Sept. 20, 2020, 6 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. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 1.7 μg/m3 (7) 25.0
 
Sept. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 1.5 μg/m3 (6) 25.0
 
Sept. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.7 μg/m3 (11) 24.0
 
Sept. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 3.9 μg/m3 (16) 25.0
 
Sept. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 3.6 μg/m3 (15) 25.0
 
Sept. 20, 2020, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 3.4 μg/m3 (14) 25.0
 
Sept. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 3.6 μg/m3 (15) 25.0
 
Sept. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 3.0 μg/m3 (12) 26.0
 
Sept. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.6 μg/m3 (11) 26.0
 
Sept. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.4 μg/m3 (10) 26.0
 
Sept. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.6 μg/m3 (11) 26.0
 
Sept. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.1 μg/m3 (9) 26.0
 
Sept. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.4 μg/m3 (10) 26.0
 
Sept. 20, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.5 μg/m3 (6) 27.0
 
Sept. 20, 2020, 3 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, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.0 μg/m3 (8) 27.0
 
Sept. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 1.4 μg/m3 (6) 26.0
 
Sept. 20, 2020, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 1.1 μg/m3 (5) 25.0
 
Sept. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 10.9 μg/m3 (45) 45.0
 
Sept. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 17.0 μg/m3 (61) 61.0
 
Sept. 19, 2020, 9 p.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
 
Sept. 19, 2020, 8 p.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
 
Sept. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.2 μg/m3 (9) 24.0
 
Sept. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 1.6 μg/m3 (7) 23.0
 
Sept. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 1.4 μg/m3 (6) 22.0
 
Sept. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 0.9 μg/m3 (4) 22.0
 
Sept. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 1.7 μg/m3 (7) 20.0
 
Sept. 19, 2020, 2 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. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 2.7 μg/m3 (11) 20.0
 
Sept. 19, 2020, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 2.1 μg/m3 (9) 21.0
 
Sept. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 1.9 μg/m3 (8) 22.0
 
Sept. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 1.7 μg/m3 (7) 22.0
 
Sept. 19, 2020, 9 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
 
Sept. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 1.3 μg/m3 (5) 21.0
 
Sept. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 0.8 μg/m3 (3) 21.0
 
Sept. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 1.7 μg/m3 (7) 18.0
 
Sept. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 2.3 μg/m3 (10) 20.0
 
Sept. 19, 2020, 4 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
 
Sept. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 3.5 μg/m3 (15) 22.0
 
Sept. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 3.3 μg/m3 (14) 22.0
 
Sept. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 7.5 μg/m3 (31) 31.0
 
Sept. 19, 2020, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 11.4 μg/m3 (48) 48.0