AQSQID: 510870014

Site Name: Math & Science Ctr

Location: Henrico Co, VA

Reporting: True, Located: True

Current AQI: 22.0

Henrico Co VA, US: 37.5583, -77.400299

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Aug. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) 0.2 ppb (2) N/A 7.1 μg/m3 (30) 30.0
 
Aug. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 13.0 ppb (10) 0.2 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Aug. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) 0.2 ppb (2) N/A 6.7 μg/m3 (28) 28.0
 
Aug. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.2 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
Aug. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) N/A 6.4 μg/m3 (27) 27.0
 
Aug. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) N/A 6.1 μg/m3 (25) 25.0
 
Aug. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.3 ppb (3) N/A 5.8 μg/m3 (24) 24.0
 
Aug. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.3 ppb (3) N/A 5.5 μg/m3 (23) 23.0
 
Aug. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
Aug. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
Aug. 18, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.3 ppb (3) N/A 10.8 μg/m3 (45) 45.0
 
Aug. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.3 ppb (3) N/A 10.3 μg/m3 (43) 43.0
 
Aug. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.3 ppb (3) N/A 10.3 μg/m3 (43) 43.0
 
Aug. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 62.0 ppb (48) 0.3 ppb (3) N/A 10.7 μg/m3 (45) 48.0
 
Aug. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 63.0 ppb (48) 0.2 ppb (2) N/A 10.7 μg/m3 (45) 48.0
 
Aug. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 60.0 ppb (46) 0.2 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Aug. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.2 ppb (2) N/A 11.4 μg/m3 (48) 48.0
 
Aug. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A 13.6 μg/m3 (53) 53.0
 
Aug. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.3 ppb (3) N/A 12.3 μg/m3 (51) 51.0
 
Aug. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.3 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
Aug. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.3 ppb (3) N/A 7.7 μg/m3 (32) 32.0
 
Aug. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.2 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
Aug. 17, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.2 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
Aug. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 7.0 ppb (5) 0.2 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Aug. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 3.0 ppb (2) 0.2 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Aug. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 5.0 ppb (4) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 6.0 ppb (5) 0.2 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Aug. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) 0.2 ppb (2) N/A 6.4 μg/m3 (27) 27.0
 
Aug. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.2 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
Aug. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.2 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
Aug. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.2 ppb (2) N/A 5.1 μg/m3 (21) 22.0
 
Aug. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.2 ppb (2) N/A 5.1 μg/m3 (21) 23.0
 
Aug. 17, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.3 ppb (3) N/A 4.5 μg/m3 (19) 28.0
 
Aug. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) N/A 4.1 μg/m3 (17) 32.0
 
Aug. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) N/A 4.9 μg/m3 (20) 32.0
 
Aug. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.2 ppb (2) N/A 3.4 μg/m3 (14) 31.0
 
Aug. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.2 ppb (2) N/A 3.2 μg/m3 (13) 35.0
 
Aug. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.2 ppb (2) N/A 4.6 μg/m3 (19) 35.0
 
Aug. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A 7.8 μg/m3 (32) 37.0
 
Aug. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) N/A 7.9 μg/m3 (33) 35.0
 
Aug. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) N/A 7.7 μg/m3 (32) 32.0
 
Aug. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Aug. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) N/A 9.5 μg/m3 (40) 40.0
 
Aug. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.2 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
Aug. 16, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.3 ppb (3) N/A 10.8 μg/m3 (45) 45.0
 
Aug. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) 0.3 ppb (3) N/A 10.6 μg/m3 (44) 44.0
 
Aug. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.2 ppb (2) N/A 10.6 μg/m3 (44) 44.0
 
Aug. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
Aug. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 11.3 μg/m3 (47) 47.0
 
Aug. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 10.6 μg/m3 (44) 44.0
 
Aug. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Aug. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.2 ppb (2) N/A 7.6 μg/m3 (32) 32.0
 
Aug. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) N/A 8.5 μg/m3 (35) 35.0
 
Aug. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Aug. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.2 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Aug. 16, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
Aug. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.2 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Aug. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.3 ppb (3) N/A 6.0 μg/m3 (25) 29.0
 
Aug. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.3 ppb (3) N/A 4.6 μg/m3 (19) 29.0
 
Aug. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
Aug. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
Aug. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) N/A 7.9 μg/m3 (33) 35.0
 
Aug. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Aug. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.2 ppb (2) N/A 8.8 μg/m3 (37) 37.0
 
Aug. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
Aug. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 11.6 μg/m3 (48) 48.0
 
Aug. 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.9 μg/m3 (41) 41.0
 
Aug. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.9 μg/m3 (37) 37.0
 
Aug. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (12) 0.3 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
Aug. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 12.0 ppb (9) 0.2 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Aug. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.2 ppb (2) N/A 6.1 μg/m3 (25) 25.0
 
Aug. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
Aug. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.2 ppb (2) N/A 6.4 μg/m3 (27) 27.0
 
Aug. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) 0.2 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
Aug. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.2 ppb (2) N/A 5.5 μg/m3 (23) 24.0
 
Aug. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) N/A 6.2 μg/m3 (26) 30.0
 
Aug. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) N/A 7.1 μg/m3 (30) 32.0
 
Aug. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.3 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
Aug. 15, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) N/A 6.3 μg/m3 (26) 30.0
 
Aug. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.2 ppb (2) N/A 6.7 μg/m3 (28) 34.0
 
Aug. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.2 ppb (2) N/A 6.6 μg/m3 (28) 38.0
 
Aug. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 56.0 ppb (43) 0.2 ppb (2) N/A 6.4 μg/m3 (27) 43.0
 
Aug. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.2 ppb (2) N/A 6.5 μg/m3 (27) 40.0
 
Aug. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.2 ppb (2) N/A 6.5 μg/m3 (27) 38.0
 
Aug. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (39) 0.2 ppb (2) N/A 6.5 μg/m3 (27) 39.0
 
Aug. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (39) 0.2 ppb (2) N/A 6.2 μg/m3 (26) 39.0
 
Aug. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A 6.1 μg/m3 (25) 37.0
 
Aug. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 35.0
 
Aug. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.2 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
Aug. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.2 ppb (2) N/A 7.8 μg/m3 (32) 32.0
 
Aug. 14, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
Aug. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.2 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
Aug. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
Aug. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) N/A 6.7 μg/m3 (28) 28.0
 
Aug. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.2 ppb (2) N/A 4.2 μg/m3 (18) 23.0
 
Aug. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) N/A 3.2 μg/m3 (13) 28.0
 
Aug. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.2 ppb (2) N/A 3.7 μg/m3 (15) 33.0
 
Aug. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A 8.2 μg/m3 (34) 37.0
 
Aug. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
Aug. 14, 2019, midnight N/A N/A N/A N/A N/A 3.0 ppb (4) 33.0 ppb (25) 0.2 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
Aug. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) N/A 10.8 μg/m3 (45) 45.0
 
Aug. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.2 ppb (2) N/A 13.2 μg/m3 (53) 53.0
 
Aug. 13, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.3 ppb (3) N/A 13.4 μg/m3 (53) 53.0
 
Aug. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.3 ppb (3) N/A 12.4 μg/m3 (51) 51.0
 
Aug. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.2 ppb (2) N/A 11.9 μg/m3 (50) 50.0
 
Aug. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) N/A 11.5 μg/m3 (48) 48.0
 
Aug. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) N/A 10.4 μg/m3 (43) 43.0
 
Aug. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) N/A 9.6 μg/m3 (40) 40.0
 
Aug. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) N/A 8.5 μg/m3 (35) 35.0
 
Aug. 13, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.2 ppb (2) N/A 8.7 μg/m3 (36) 36.0
 
Aug. 13, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) N/A 9.1 μg/m3 (38) 38.0
 
Aug. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) N/A 9.2 μg/m3 (38) 38.0
 
Aug. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 13, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) N/A 9.2 μg/m3 (38) 38.0
 
Aug. 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 9.1 μg/m3 (38) 38.0
 
Aug. 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 8.7 μg/m3 (36) 36.0
 
Aug. 13, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) N/A 8.8 μg/m3 (37) 37.0
 
Aug. 13, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) N/A 9.1 μg/m3 (38) 38.0
 
Aug. 13, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.2 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
Aug. 13, 2019, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) 0.2 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
Aug. 13, 2019, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) 0.3 ppb (3) N/A 10.3 μg/m3 (43) 43.0
 
Aug. 13, 2019, 1 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 32.0 ppb (25) 0.2 ppb (2) N/A 9.1 μg/m3 (38) 38.0
 
Aug. 13, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.2 ppb (2) N/A 9.5 μg/m3 (40) 40.0
 
Aug. 12, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) 0.2 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Aug. 12, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) N/A 9.4 μg/m3 (39) 39.0
 
Aug. 12, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.2 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
Aug. 12, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.2 ppb (2) N/A 9.2 μg/m3 (38) 38.0
 
Aug. 12, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A 8.7 μg/m3 (36) 37.0
 
Aug. 12, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.2 ppb (2) N/A 9.1 μg/m3 (38) 38.0
 
Aug. 12, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.2 ppb (2) N/A 8.8 μg/m3 (37) 38.0
 
Aug. 12, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.2 ppb (2) N/A 8.2 μg/m3 (34) 38.0
 
Aug. 12, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 50.0 ppb (38) 0.2 ppb (2) N/A 7.7 μg/m3 (32) 38.0
 
Aug. 12, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A 9.1 μg/m3 (38) 38.0
 
Aug. 12, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) 0.3 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
Aug. 12, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.3 μg/m3 (43) 43.0
 
Aug. 12, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.4 μg/m3 (43) 43.0
 
Aug. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 10.0 ppb (8) 0.3 ppb (3) N/A 9.9 μg/m3 (41) 41.0
 
Aug. 12, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) 0.3 ppb (3) N/A 8.7 μg/m3 (36) 36.0
 
Aug. 12, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.2 ppb (2) N/A 7.7 μg/m3 (32) 32.0
 
Aug. 12, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 12, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.2 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
Aug. 12, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) N/A 6.7 μg/m3 (28) 28.0
 
Aug. 12, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
Aug. 12, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
Aug. 12, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Aug. 12, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
Aug. 12, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) N/A 6.3 μg/m3 (26) 30.0
 
Aug. 11, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.2 ppb (2) N/A 6.3 μg/m3 (26) 36.0
 
Aug. 11, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.2 ppb (2) N/A 6.4 μg/m3 (27) 41.0
 
Aug. 11, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 54.0 ppb (42) 0.2 ppb (2) N/A 6.3 μg/m3 (26) 42.0
 
Aug. 11, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.2 ppb (2) N/A 6.3 μg/m3 (26) 42.0
 
Aug. 11, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.2 ppb (2) N/A 6.4 μg/m3 (27) 41.0
 
Aug. 11, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (39) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 39.0
 
Aug. 11, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A 5.5 μg/m3 (23) 37.0
 
Aug. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
Aug. 11, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) N/A 6.2 μg/m3 (26) 32.0
 
Aug. 11, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) 0.2 ppb (2) N/A 6.5 μg/m3 (27) 29.0
 
Aug. 11, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) 0.2 ppb (2) N/A 7.3 μg/m3 (30) 30.0
 
Aug. 11, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
Aug. 11, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.2 ppb (2) N/A 8.5 μg/m3 (35) 35.0