ID: 874

AQSQID: 510590030

Site Name: Franconia

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

Updated: June 28, 2022, 5:53 p.m.

Location: Alexandria (Groveton Heights), VA

Reporting: True, Located: True

Current AQI: 46.0

Alexandria (Groveton Heights) VA, US: 38.771702, -77.108902

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
June 28, 2022, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) N/A 12.0 μg/m3 (12) 4.0 μg/m3 (17) 46.0
 
June 28, 2022, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 47.0 ppb (44) N/A 12.0 μg/m3 (12) 4.1 μg/m3 (18) 44.0
 
June 28, 2022, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 43.0 ppb (40) N/A 15.0 μg/m3 (14) 4.9 μg/m3 (21) 40.0
 
June 28, 2022, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A 14.0 μg/m3 (13) 4.4 μg/m3 (19) 36.0
 
June 28, 2022, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 11.0 μg/m3 (11) 4.1 μg/m3 (18) 29.0
 
June 28, 2022, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 11.0 μg/m3 (11) 4.1 μg/m3 (18) 29.0
 
June 28, 2022, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 11.0 μg/m3 (11) 4.3 μg/m3 (18) 20.0
 
June 28, 2022, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 11.0 μg/m3 (11) 4.3 μg/m3 (18) 20.0
 
June 28, 2022, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 12.0 μg/m3 (12) 4.3 μg/m3 (18) 20.0
 
June 28, 2022, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 12.0 μg/m3 (12) 4.3 μg/m3 (18) 20.0
 
June 28, 2022, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 12.0 μg/m3 (12) 4.8 μg/m3 (20) 28.0
 
June 28, 2022, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 12.0 μg/m3 (12) 4.8 μg/m3 (20) 28.0
 
June 28, 2022, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 12.0 μg/m3 (12) 4.8 μg/m3 (20) 28.0
 
June 28, 2022, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 12.0 μg/m3 (12) 4.6 μg/m3 (20) 32.0
 
June 28, 2022, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 11.0 μg/m3 (11) 4.7 μg/m3 (20) 36.0
 
June 28, 2022, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A 13.0 μg/m3 (13) 4.8 μg/m3 (20) 38.0
 
June 28, 2022, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 17.0 μg/m3 (16) 8.0 μg/m3 (34) 34.0
 
June 28, 2022, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 16.0 μg/m3 (15) 9.6 μg/m3 (40) 40.0
 
June 28, 2022, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 16.0 μg/m3 (15) 9.6 μg/m3 (40) 40.0
 
June 28, 2022, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A 16.0 μg/m3 (15) 8.5 μg/m3 (36) 38.0
 
June 28, 2022, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A 16.0 μg/m3 (15) 8.5 μg/m3 (36) 38.0
 
June 27, 2022, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 45.0 ppb (42) N/A 15.0 μg/m3 (14) 8.3 μg/m3 (35) 42.0
 
June 27, 2022, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 46.0 ppb (43) N/A 15.0 μg/m3 (14) 7.7 μg/m3 (33) 43.0
 
June 27, 2022, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 46.0 ppb (43) N/A 15.0 μg/m3 (14) 7.7 μg/m3 (33) 43.0
 
June 27, 2022, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 46.0 ppb (43) N/A 15.0 μg/m3 (14) 7.7 μg/m3 (33) 43.0
 
June 27, 2022, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A 15.0 μg/m3 (14) 7.1 μg/m3 (30) 41.0
 
June 27, 2022, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A 15.0 μg/m3 (14) 7.1 μg/m3 (30) 41.0
 
June 27, 2022, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A 15.0 μg/m3 (14) 7.1 μg/m3 (30) 41.0
 
June 27, 2022, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A 15.0 μg/m3 (14) 7.3 μg/m3 (31) 38.0
 
June 27, 2022, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A 15.0 μg/m3 (14) 7.3 μg/m3 (31) 38.0
 
June 27, 2022, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A 14.0 μg/m3 (13) 8.1 μg/m3 (34) 34.0
 
June 27, 2022, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A 14.0 μg/m3 (13) 8.1 μg/m3 (34) 34.0
 
June 27, 2022, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A 15.0 μg/m3 (14) 9.9 μg/m3 (42) 42.0
 
June 27, 2022, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A 14.0 μg/m3 (13) 9.8 μg/m3 (41) 41.0
 
June 27, 2022, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A 14.0 μg/m3 (13) 9.2 μg/m3 (39) 39.0
 
June 27, 2022, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A 14.0 μg/m3 (13) 9.2 μg/m3 (39) 39.0
 
June 27, 2022, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 19.0 ppb (18) N/A 15.0 μg/m3 (14) 9.5 μg/m3 (40) 40.0
 
June 27, 2022, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 19.0 ppb (18) N/A 15.0 μg/m3 (14) 9.5 μg/m3 (40) 40.0
 
June 27, 2022, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (22) N/A 14.0 μg/m3 (13) 9.1 μg/m3 (38) 38.0
 
June 27, 2022, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) N/A 13.0 μg/m3 (13) 8.5 μg/m3 (36) 36.0
 
June 27, 2022, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) N/A 13.0 μg/m3 (13) 8.2 μg/m3 (35) 35.0
 
June 27, 2022, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A 12.0 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
June 27, 2022, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (26) N/A 12.0 μg/m3 (12) 7.8 μg/m3 (33) 33.0
 
June 27, 2022, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 12.0 μg/m3 (12) 7.6 μg/m3 (32) 32.0
 
June 27, 2022, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 10.0 μg/m3 (10) 7.0 μg/m3 (30) 32.0
 
June 27, 2022, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A 10.0 μg/m3 (10) 6.6 μg/m3 (28) 39.0
 
June 26, 2022, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 43.0 ppb (40) N/A 12.0 μg/m3 (12) 7.2 μg/m3 (31) 40.0
 
June 26, 2022, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A 13.0 μg/m3 (13) 7.3 μg/m3 (31) 41.0
 
June 26, 2022, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 42.0 ppb (39) N/A 12.0 μg/m3 (12) 6.8 μg/m3 (29) 39.0
 
June 26, 2022, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A 12.0 μg/m3 (12) 6.0 μg/m3 (25) 37.0
 
June 26, 2022, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 11.0 μg/m3 (11) 5.8 μg/m3 (25) 35.0
 
June 26, 2022, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 11.0 μg/m3 (11) 5.8 μg/m3 (25) 34.0
 
June 26, 2022, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 13.0 μg/m3 (13) 7.0 μg/m3 (30) 30.0
 
June 26, 2022, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 13.0 μg/m3 (13) 7.0 μg/m3 (30) 30.0
 
June 26, 2022, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 13.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
June 26, 2022, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 13.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
June 26, 2022, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A 13.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
June 26, 2022, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A 13.0 μg/m3 (13) 7.7 μg/m3 (33) 33.0
 
June 26, 2022, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 13.0 μg/m3 (13) 7.8 μg/m3 (33) 33.0
 
June 26, 2022, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 13.0 μg/m3 (13) 7.8 μg/m3 (33) 33.0
 
June 26, 2022, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 13.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
June 26, 2022, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 14.0 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
June 26, 2022, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 14.0 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
June 26, 2022, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A 15.0 μg/m3 (14) 9.2 μg/m3 (39) 39.0
 
June 26, 2022, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A 14.0 μg/m3 (13) 9.1 μg/m3 (38) 38.0
 
June 26, 2022, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A 14.0 μg/m3 (13) 9.1 μg/m3 (38) 38.0
 
June 25, 2022, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A 14.0 μg/m3 (13) 8.7 μg/m3 (37) 41.0
 
June 25, 2022, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A 13.0 μg/m3 (13) 7.6 μg/m3 (32) 35.0
 
June 25, 2022, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A 13.0 μg/m3 (13) 7.6 μg/m3 (32) 35.0
 
June 25, 2022, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A 13.0 μg/m3 (13) 7.5 μg/m3 (32) 32.0
 
June 25, 2022, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A 13.0 μg/m3 (13) 7.5 μg/m3 (32) 32.0
 
June 25, 2022, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A 13.0 μg/m3 (13) 7.5 μg/m3 (32) 32.0
 
June 25, 2022, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A 13.0 μg/m3 (13) 7.5 μg/m3 (32) 32.0
 
June 25, 2022, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A 13.0 μg/m3 (13) 7.7 μg/m3 (33) 33.0
 
June 25, 2022, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A 13.0 μg/m3 (13) 7.7 μg/m3 (33) 33.0
 
June 25, 2022, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (13) N/A 13.0 μg/m3 (13) 6.8 μg/m3 (29) 29.0
 
June 25, 2022, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (13) N/A 13.0 μg/m3 (13) 6.8 μg/m3 (29) 29.0
 
June 25, 2022, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 10.0 ppb (10) N/A 16.0 μg/m3 (15) 7.5 μg/m3 (32) 32.0
 
June 25, 2022, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (16) N/A 17.0 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
June 25, 2022, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A 16.0 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
June 25, 2022, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A 12.0 μg/m3 (12) 8.2 μg/m3 (35) 35.0
 
June 25, 2022, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A 12.0 μg/m3 (12) 8.2 μg/m3 (35) 35.0
 
June 25, 2022, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A 12.0 μg/m3 (12) 7.8 μg/m3 (33) 36.0
 
June 24, 2022, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) N/A 11.0 μg/m3 (11) 7.3 μg/m3 (31) 46.0
 
June 24, 2022, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A 12.0 μg/m3 (12) 6.8 μg/m3 (29) 48.0
 
June 24, 2022, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) N/A 11.0 μg/m3 (11) 6.4 μg/m3 (27) 46.0
 
June 24, 2022, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) N/A 10.0 μg/m3 (10) 6.4 μg/m3 (27) 46.0
 
June 24, 2022, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) N/A 10.0 μg/m3 (10) 6.4 μg/m3 (27) 46.0
 
June 24, 2022, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (43) N/A 10.0 μg/m3 (10) 5.6 μg/m3 (24) 43.0
 
June 24, 2022, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A 8.0 μg/m3 (8) 4.8 μg/m3 (20) 40.0
 
June 24, 2022, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A 9.0 μg/m3 (9) 4.8 μg/m3 (20) 36.0
 
June 24, 2022, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (22) N/A 13.0 μg/m3 (13) 5.6 μg/m3 (24) 24.0
 
June 24, 2022, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 5.0 ppb (5) N/A 14.0 μg/m3 (13) 6.2 μg/m3 (26) 26.0
 
June 24, 2022, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 5.0 ppb (5) N/A 14.0 μg/m3 (13) 6.2 μg/m3 (26) 26.0
 
June 24, 2022, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) N/A 19.0 μg/m3 (18) 6.9 μg/m3 (29) 29.0
 
June 24, 2022, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 5.0 ppb (5) N/A 14.0 μg/m3 (13) 5.9 μg/m3 (25) 25.0
 
June 24, 2022, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 12.0 ppb (12) N/A 18.0 μg/m3 (17) 6.4 μg/m3 (27) 27.0
 
June 24, 2022, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (14) N/A 14.0 μg/m3 (13) 5.4 μg/m3 (23) 23.0
 
June 24, 2022, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (14) N/A 14.0 μg/m3 (13) 5.4 μg/m3 (23) 23.0
 
June 24, 2022, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (13) N/A 12.0 μg/m3 (12) 5.1 μg/m3 (22) 22.0
 
June 24, 2022, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) N/A 14.0 μg/m3 (13) 5.6 μg/m3 (24) 24.0
 
June 24, 2022, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (26) N/A 9.0 μg/m3 (9) 4.8 μg/m3 (20) 26.0
 
June 24, 2022, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A 9.0 μg/m3 (9) 4.2 μg/m3 (18) 31.0
 
June 23, 2022, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A 8.0 μg/m3 (8) 3.8 μg/m3 (16) 31.0
 
June 23, 2022, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) N/A 6.0 μg/m3 (6) 3.7 μg/m3 (16) 37.0
 
June 23, 2022, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) N/A 7.0 μg/m3 (7) 3.6 μg/m3 (16) 37.0
 
June 23, 2022, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A 6.0 μg/m3 (6) 3.2 μg/m3 (14) 39.0
 
June 23, 2022, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A 6.0 μg/m3 (6) 3.2 μg/m3 (14) 39.0
 
June 23, 2022, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A 4.0 μg/m3 (4) 2.3 μg/m3 (10) 41.0
 
June 23, 2022, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A 4.0 μg/m3 (4) 2.3 μg/m3 (10) 41.0
 
June 23, 2022, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) N/A 3.0 μg/m3 (3) 1.8 μg/m3 (8) 45.0
 
June 23, 2022, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) N/A 3.0 μg/m3 (3) 1.8 μg/m3 (8) 45.0
 
June 23, 2022, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A 6.0 μg/m3 (6) 3.2 μg/m3 (14) 36.0
 
June 23, 2022, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A 9.0 μg/m3 (9) 4.3 μg/m3 (18) 38.0
 
June 23, 2022, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A 10.0 μg/m3 (10) 4.7 μg/m3 (20) 38.0
 
June 23, 2022, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A 10.0 μg/m3 (10) 4.7 μg/m3 (20) 38.0
 
June 23, 2022, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A 9.0 μg/m3 (9) 4.0 μg/m3 (17) 35.0
 
June 23, 2022, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A 9.0 μg/m3 (9) 4.0 μg/m3 (17) 35.0
 
June 23, 2022, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A 6.0 μg/m3 (6) 3.2 μg/m3 (14) 32.0
 
June 23, 2022, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A 5.0 μg/m3 (5) 2.6 μg/m3 (11) 28.0
 
June 23, 2022, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A 13.0 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
June 23, 2022, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A 13.0 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
June 23, 2022, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A 19.0 μg/m3 (18) 11.4 μg/m3 (48) 48.0
 
June 22, 2022, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A 23.0 μg/m3 (22) 13.1 μg/m3 (54) 54.0
 
June 22, 2022, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A 23.0 μg/m3 (22) 13.1 μg/m3 (54) 54.0
 
June 22, 2022, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 50.0 ppb (47) N/A 26.0 μg/m3 (25) 14.0 μg/m3 (55) 55.0
 
June 22, 2022, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 50.0 ppb (47) N/A 26.0 μg/m3 (25) 14.0 μg/m3 (55) 55.0
 
June 22, 2022, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 59.0 ppb (65) N/A 21.0 μg/m3 (20) 12.1 μg/m3 (51) 65.0
 
June 22, 2022, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 54.0 ppb (50) N/A 21.0 μg/m3 (20) 10.2 μg/m3 (43) 50.0
 
June 22, 2022, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 82.0 ppb (107) N/A 34.0 μg/m3 (32) 11.9 μg/m3 (50) 107.0
 
June 22, 2022, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 82.0 ppb (107) N/A 34.0 μg/m3 (32) 11.9 μg/m3 (50) 107.0
 
June 22, 2022, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 61.0 ppb (71) N/A 22.0 μg/m3 (21) 9.5 μg/m3 (40) 71.0
 
June 22, 2022, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (22) N/A 20.0 μg/m3 (19) 9.5 μg/m3 (40) 40.0
 
June 22, 2022, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 17.0 ppb (16) N/A 17.0 μg/m3 (16) 9.9 μg/m3 (42) 42.0
 
June 22, 2022, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 17.0 ppb (16) N/A 17.0 μg/m3 (16) 9.9 μg/m3 (42) 42.0
 
June 22, 2022, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 15.0 μg/m3 (14) 7.7 μg/m3 (33) 35.0
 
June 22, 2022, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 15.0 μg/m3 (14) 7.7 μg/m3 (33) 35.0
 
June 22, 2022, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 13.0 μg/m3 (13) 7.0 μg/m3 (30) 36.0
 
June 22, 2022, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 43.0 ppb (40) N/A 13.0 μg/m3 (13) 6.4 μg/m3 (27) 40.0
 
June 21, 2022, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 60.0 ppb (68) N/A 13.0 μg/m3 (13) 6.1 μg/m3 (26) 68.0
 
June 21, 2022, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 57.0 ppb (58) N/A 15.0 μg/m3 (14) 6.4 μg/m3 (27) 58.0
 
June 21, 2022, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 57.0 ppb (58) N/A 15.0 μg/m3 (14) 6.4 μg/m3 (27) 58.0
 
June 21, 2022, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 57.0 ppb (58) N/A 15.0 μg/m3 (14) 6.4 μg/m3 (27) 58.0
 
June 21, 2022, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 49.0 ppb (46) N/A 17.0 μg/m3 (16) 6.5 μg/m3 (28) 46.0
 
June 21, 2022, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 49.0 ppb (46) N/A 17.0 μg/m3 (16) 6.5 μg/m3 (28) 46.0
 
June 21, 2022, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 42.0 ppb (39) N/A 15.0 μg/m3 (14) 6.4 μg/m3 (27) 39.0
 
June 21, 2022, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 42.0 ppb (39) N/A 15.0 μg/m3 (14) 6.4 μg/m3 (27) 39.0
 
June 21, 2022, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 16.0 μg/m3 (15) 6.7 μg/m3 (28) 28.0
 
June 21, 2022, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 16.0 μg/m3 (15) 6.7 μg/m3 (28) 28.0
 
June 21, 2022, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 16.0 μg/m3 (15) 6.7 μg/m3 (28) 28.0
 
June 21, 2022, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 14.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
June 21, 2022, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 14.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
June 21, 2022, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 19.0 ppb (18) N/A 15.0 μg/m3 (14) 6.5 μg/m3 (28) 28.0
 
June 21, 2022, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 19.0 ppb (18) N/A 13.0 μg/m3 (13) 6.5 μg/m3 (28) 28.0
 
June 21, 2022, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 19.0 ppb (18) N/A 12.0 μg/m3 (12) 6.8 μg/m3 (29) 29.0
 
June 21, 2022, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 13.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
June 21, 2022, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 13.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
June 21, 2022, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 13.0 μg/m3 (13) 6.4 μg/m3 (27) 29.0
 
June 21, 2022, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 13.0 μg/m3 (13) 6.1 μg/m3 (26) 36.0
 
June 21, 2022, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 49.0 ppb (46) N/A 14.0 μg/m3 (13) 5.1 μg/m3 (22) 46.0
 
June 20, 2022, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 53.0 ppb (50) N/A 12.0 μg/m3 (12) 4.6 μg/m3 (20) 50.0
 
June 20, 2022, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 52.0 ppb (49) N/A 11.0 μg/m3 (11) 3.9 μg/m3 (17) 49.0
 
June 20, 2022, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 53.0 ppb (50) N/A 10.0 μg/m3 (10) 3.6 μg/m3 (16) 50.0
 
June 20, 2022, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 57.0 ppb (58) N/A 14.0 μg/m3 (13) 4.1 μg/m3 (18) 58.0
 
June 20, 2022, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 57.0 ppb (58) N/A 14.0 μg/m3 (13) 4.1 μg/m3 (18) 58.0
 
June 20, 2022, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 55.0 ppb (51) N/A 12.0 μg/m3 (12) 3.9 μg/m3 (17) 51.0
 
June 20, 2022, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 50.0 ppb (47) N/A 17.0 μg/m3 (16) 4.7 μg/m3 (20) 47.0
 
June 20, 2022, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 50.0 ppb (47) N/A 17.0 μg/m3 (16) 4.7 μg/m3 (20) 47.0