AQSQID: 110010051

Site Name: Dcnearroad

Location: Washington (Riv Terrace), DC

Reporting: True, Located: True

Current AQI: 46.0

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
Jan. 22, 2020, 1 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A N/A 0.48 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 22, 2020, noon N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 0.47 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 22, 2020, 11 a.m. N/A N/A N/A 31.0 ppb (29) N/A N/A N/A 0.5 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2020, 10 a.m. N/A N/A N/A 33.0 ppb (31) N/A N/A N/A 0.42 ppb (5) N/A 7.0 μg/m3 (29) 31.0
 
Jan. 22, 2020, 9 a.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A 0.28 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 8 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.21 ppb (2) N/A 2.0 μg/m3 (8) 12.0
 
Jan. 22, 2020, 7 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 13.0
 
Jan. 22, 2020, 6 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 22, 2020, 5 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 22, 2020, 4 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 3 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.21 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 22, 2020, 2 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 1 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 22, 2020, midnight N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.23 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 21, 2020, 11 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 10 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.22 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2020, 9 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 21, 2020, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 21, 2020, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2020, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2020, 5 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 21, 2020, 3 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2020, 2 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.23 ppb (3) N/A N/A 12.0
 
Jan. 21, 2020, 1 p.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.38 ppb (4) N/A 2.0 μg/m3 (8) 22.0
 
Jan. 21, 2020, noon N/A N/A N/A 27.0 ppb (25) N/A N/A N/A 0.24 ppb (3) N/A 0.0 μg/m3 (0) 25.0
 
Jan. 21, 2020, 11 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.22 ppb (2) N/A -1.0 μg/m3 (0) 19.0
 
Jan. 21, 2020, 10 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.18 ppb (2) N/A 1.0 μg/m3 (4) 12.0
 
Jan. 21, 2020, 9 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2020, 8 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 11.0
 
Jan. 21, 2020, 7 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2020, 6 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 21, 2020, 5 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.18 ppb (2) N/A 1.0 μg/m3 (4) 7.0
 
Jan. 21, 2020, 4 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2020, 3 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.26 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 2 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.28 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2020, 1 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.26 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, midnight N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2020, 11 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.21 ppb (2) N/A 0.0 μg/m3 (0) 7.0
 
Jan. 20, 2020, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A -1.0 μg/m3 (0) 6.0
 
Jan. 20, 2020, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 20, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 20, 2020, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 20, 2020, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
Jan. 20, 2020, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2020, 3 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 1.0 μg/m3 (4) 6.0
 
Jan. 20, 2020, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2020, 1 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.22 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, noon N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.19 ppb (2) N/A 1.0 μg/m3 (4) 7.0
 
Jan. 20, 2020, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 20, 2020, 10 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2020, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 20, 2020, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 20, 2020, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2020, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2020, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2020, midnight N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 19, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 19, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
Jan. 19, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 19, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.13 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 0.0 μg/m3 (0) 3.0
 
Jan. 19, 2020, 1 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.22 ppb (2) N/A 1.0 μg/m3 (4) 7.0
 
Jan. 19, 2020, noon N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.27 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2020, 11 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.42 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 10 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.3 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2020, 9 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.38 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2020, 8 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 19, 2020, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2020, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2020, 4 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2020, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 19, 2020, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 19, 2020, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, midnight N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 18, 2020, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2020, 10 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.32 ppb (4) N/A 2.0 μg/m3 (8) 10.0
 
Jan. 18, 2020, 9 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.38 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 8 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.46 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 7 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.46 ppb (5) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 18, 2020, 6 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.41 ppb (5) N/A 2.0 μg/m3 (8) 11.0
 
Jan. 18, 2020, 5 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2020, 4 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.42 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2020, 3 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 18, 2020, 2 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2020, 1 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.29 ppb (3) N/A 2.0 μg/m3 (8) 9.0
 
Jan. 18, 2020, noon N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.28 ppb (3) N/A 2.0 μg/m3 (8) 11.0
 
Jan. 18, 2020, 11 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 10 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.34 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 9 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.36 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 8 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.46 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 7 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.38 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 6 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.45 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2020, 5 a.m. N/A N/A N/A 32.0 ppb (30) N/A N/A N/A 0.55 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2020, 4 a.m. N/A N/A N/A 30.0 ppb (28) N/A N/A N/A 0.62 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2020, 3 a.m. N/A N/A N/A 33.0 ppb (31) N/A N/A N/A 0.63 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2020, 2 a.m. N/A N/A N/A 28.0 ppb (26) N/A N/A N/A 0.44 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 1 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.34 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, midnight N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2020, 11 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.26 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 17, 2020, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 17, 2020, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2020, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (2) N/A -1.0 μg/m3 (0) 5.0
 
Jan. 17, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) N/A 0.0 μg/m3 (0) 4.0
 
Jan. 17, 2020, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) N/A -1.0 μg/m3 (0) 4.0
 
Jan. 17, 2020, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 17, 2020, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 0.0 μg/m3 (0) 6.0
 
Jan. 17, 2020, 1 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) N/A 1.0 μg/m3 (4) 7.0
 
Jan. 17, 2020, noon N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.18 ppb (2) N/A -1.0 μg/m3 (0) 9.0
 
Jan. 17, 2020, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.18 ppb (2) N/A -2.0 μg/m3 (0) 7.0
 
Jan. 17, 2020, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
Jan. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
Jan. 17, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 17, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 17, 2020, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
Jan. 17, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 17, 2020, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2020, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
Jan. 17, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 17, 2020, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.17 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2020, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.14 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 16, 2020, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.15 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
Jan. 16, 2020, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.15 ppb (2) N/A 0.0 μg/m3 (0) 5.0
 
Jan. 16, 2020, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, noon N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, 11 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.13 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 10 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.28 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 9 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.25 ppb (3) N/A 3.0 μg/m3 (12) 15.0
 
Jan. 16, 2020, 8 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.3 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 16, 2020, 7 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2020, 6 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 16, 2020, 5 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.37 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 16, 2020, 4 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.38 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2020, 3 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.46 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2020, 2 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.55 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2020, 1 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, midnight N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.45 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, 11 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.6 ppb (7) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2020, 10 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.47 ppb (5) N/A 3.0 μg/m3 (12) 16.0
 
Jan. 15, 2020, 9 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.35 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 15, 2020, 8 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.38 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2020, 7 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A 0.42 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 15, 2020, 6 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.49 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 15, 2020, 5 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.39 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 15, 2020, 4 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.3 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, 3 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 0.38 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, 2 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.41 ppb (5) N/A 12.0 μg/m3 (50) 50.0