ID: 2504

AQSQID: 110010051

Site Name: Dcnearroad

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

Updated: June 18, 2021, 5:52 a.m.

Location: Washington (Riv Terrace), DC

Reporting: True, Located: True

Current AQI: 42.0

Washington (Riv Terrace) DC, US: 38.894749, -76.953427

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
June 18, 2021, 4 a.m. N/A N/A N/A 41.0 ppb (39) N/A N/A N/A 1.04 ppb (12) N/A 10.0 μg/m3 (42) 42.0
 
June 18, 2021, 3 a.m. N/A N/A N/A 42.0 ppb (40) N/A N/A N/A 1.16 ppb (14) N/A 8.0 μg/m3 (34) 40.0
 
June 18, 2021, 2 a.m. N/A N/A N/A 43.0 ppb (41) N/A N/A N/A 1.05 ppb (13) N/A 12.0 μg/m3 (50) 50.0
 
June 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.82 ppb (10) N/A 11.0 μg/m3 (46) 46.0
 
June 18, 2021, midnight N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
June 17, 2021, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
June 17, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.15 ppb (2) N/A 7.0 μg/m3 (30) 30.0
 
June 17, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A -1.0 μg/m3 (0) 4.0
 
June 17, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
June 17, 2021, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.17 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
June 17, 2021, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 17, 2021, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
June 17, 2021, 4 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.18 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 17, 2021, 3 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.21 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
June 17, 2021, 2 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.21 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
June 17, 2021, 1 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.18 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 17, 2021, noon N/A N/A N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
June 17, 2021, 11 a.m. N/A N/A N/A 14.0 ppb (14) N/A N/A N/A 0.19 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
June 17, 2021, 10 a.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.18 ppb (3) N/A -1.0 μg/m3 (0) 16.0
 
June 17, 2021, 9 a.m. N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 17, 2021, 8 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.19 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 17, 2021, 7 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.14 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
June 17, 2021, 6 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.16 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 17, 2021, 5 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.17 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 17, 2021, 4 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 17, 2021, 3 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.22 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 17, 2021, 2 a.m. N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 17, 2021, 1 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.19 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 17, 2021, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
June 16, 2021, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
June 16, 2021, 10 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.16 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
June 16, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
June 16, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 16, 2021, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 16, 2021, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
June 16, 2021, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 16, 2021, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 16, 2021, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.16 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 16, 2021, 2 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.17 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
June 16, 2021, 1 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 16, 2021, noon N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.19 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
June 16, 2021, 11 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.17 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 16, 2021, 10 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.16 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
June 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
June 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) N/A 7.0 μg/m3 (30) 30.0
 
June 16, 2021, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
June 16, 2021, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.14 ppb (2) N/A 8.0 μg/m3 (34) 34.0
 
June 16, 2021, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.14 ppb (2) N/A 7.0 μg/m3 (30) 30.0
 
June 16, 2021, 4 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.16 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 16, 2021, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
June 16, 2021, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
June 16, 2021, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 16, 2021, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 15, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
June 15, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 15, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
June 15, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
June 15, 2021, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
June 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
June 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 15, 2021, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
June 15, 2021, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
June 15, 2021, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.18 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
June 15, 2021, 1 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.21 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
June 15, 2021, noon N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.22 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
June 15, 2021, 11 a.m. N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 0.21 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
June 15, 2021, 10 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.19 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 15, 2021, 9 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.17 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
June 15, 2021, 8 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.16 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
June 15, 2021, 7 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
June 15, 2021, 6 a.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.17 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 15, 2021, 5 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.17 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 15, 2021, 4 a.m. N/A N/A N/A 14.0 ppb (14) N/A N/A N/A 0.21 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 15, 2021, 3 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.19 ppb (3) N/A N/A 8.0
 
June 15, 2021, 2 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.27 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
June 15, 2021, 1 a.m. N/A N/A N/A 21.0 ppb (20) N/A N/A N/A N/A N/A 14.0 μg/m3 (55) 55.0
 
June 15, 2021, midnight N/A N/A N/A 21.0 ppb (20) N/A N/A N/A 0.49 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
June 14, 2021, 11 p.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
June 14, 2021, 10 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.28 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
June 14, 2021, 9 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
June 14, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
June 14, 2021, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
June 14, 2021, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 14, 2021, 5 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
June 14, 2021, 4 p.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.24 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
June 14, 2021, 3 p.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.22 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
June 14, 2021, 2 p.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.21 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
June 14, 2021, 1 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 15.0 μg/m3 (58) 58.0
 
June 14, 2021, noon N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.26 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
June 14, 2021, 11 a.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.32 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
June 14, 2021, 10 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 19.0
 
June 14, 2021, 9 a.m. N/A N/A N/A 21.0 ppb (20) N/A N/A N/A 0.39 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
June 14, 2021, 8 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.33 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 14, 2021, 7 a.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.27 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
June 14, 2021, 6 a.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.29 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 14, 2021, 5 a.m. N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 14, 2021, 4 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.31 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
June 14, 2021, 3 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.47 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
June 14, 2021, 2 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.4 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
June 14, 2021, 1 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.38 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 14, 2021, midnight N/A N/A N/A N/A N/A N/A N/A 0.46 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
June 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.43 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
June 13, 2021, 10 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.29 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
June 13, 2021, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
June 13, 2021, 8 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.3 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
June 13, 2021, 7 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.29 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
June 13, 2021, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 13, 2021, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
June 13, 2021, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
June 13, 2021, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
June 13, 2021, 2 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.22 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
June 13, 2021, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
June 13, 2021, noon N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.28 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
June 13, 2021, 11 a.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.28 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 13, 2021, 10 a.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.27 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
June 13, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.36 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 13, 2021, 7 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.53 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
June 13, 2021, 6 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
June 13, 2021, 5 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.48 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
June 13, 2021, 4 a.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.6 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
June 13, 2021, 3 a.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.51 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
June 13, 2021, 2 a.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.59 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
June 13, 2021, 1 a.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.52 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
June 13, 2021, midnight N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.55 ppb (7) N/A 5.0 μg/m3 (21) 21.0
 
June 12, 2021, 11 p.m. N/A N/A N/A 14.0 ppb (14) N/A N/A N/A 0.43 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
June 12, 2021, 10 p.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.34 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 12, 2021, 9 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.32 ppb (4) N/A 2.0 μg/m3 (9) 9.0
 
June 12, 2021, 8 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.3 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
June 12, 2021, 7 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.29 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
June 12, 2021, 6 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 12, 2021, 5 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.28 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
June 12, 2021, 4 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.32 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
June 12, 2021, 3 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.3 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
June 12, 2021, 2 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
June 12, 2021, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
June 12, 2021, noon N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.19 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 12, 2021, 11 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.19 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 12, 2021, 10 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.17 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 12, 2021, 9 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 12, 2021, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
June 12, 2021, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
June 12, 2021, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
June 12, 2021, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
June 12, 2021, 4 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.28 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 12, 2021, 3 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.35 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
June 12, 2021, 2 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.39 ppb (5) N/A 0.0 μg/m3 (0) 8.0
 
June 12, 2021, 1 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 12, 2021, midnight N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.31 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
June 11, 2021, 11 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
June 11, 2021, 10 p.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.4 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 11, 2021, 9 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
June 11, 2021, 8 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.39 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 11, 2021, 7 p.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.35 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
June 11, 2021, 6 p.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.37 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
June 11, 2021, 5 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.33 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
June 11, 2021, 4 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.38 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 11, 2021, 3 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.37 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
June 11, 2021, 2 p.m. N/A N/A N/A 21.0 ppb (20) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
June 11, 2021, 1 p.m. N/A N/A N/A 23.0 ppb (22) N/A N/A N/A 0.37 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 11, 2021, noon N/A N/A N/A 24.0 ppb (23) N/A N/A N/A 0.42 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
June 11, 2021, 11 a.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.36 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
June 11, 2021, 10 a.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.29 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
June 11, 2021, 9 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.29 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 11, 2021, 8 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.18 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
June 11, 2021, 7 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.16 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
June 11, 2021, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.16 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
June 11, 2021, 5 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.2 ppb (3) N/A 4.0 μg/m3 (17) 17.0