AQSQID: 110010051

Site Name: Dcnearroad

Location: Washington (Kenilworth Ave Fwy), DC

Reporting: True, Located: True

Current AQI: 20.0

Washington (Kenilworth Ave Fwy) DC, US: 38.894749, -76.953427

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 18, 2019, 3 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.36 ppb (4) N/A N/A 18.0
 
March 18, 2019, 2 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A 0.39 ppb (4) N/A N/A 20.0
 
March 18, 2019, 1 p.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.41 ppb (5) N/A N/A 22.0
 
March 18, 2019, noon N/A N/A N/A 35.0 ppb (32) N/A N/A N/A 0.52 ppb (6) N/A N/A 32.0
 
March 18, 2019, 11 a.m. N/A N/A N/A 38.0 ppb (35) N/A N/A N/A 0.41 ppb (5) N/A N/A 35.0
 
March 18, 2019, 10 a.m. N/A N/A N/A 38.0 ppb (35) N/A N/A N/A 0.61 ppb (7) N/A N/A 35.0
 
March 18, 2019, 9 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 19.0
 
March 18, 2019, 8 a.m. N/A N/A N/A 23.0 ppb (21) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 21.0
 
March 18, 2019, 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 5.0 μg/m3 (21) 21.0
 
March 18, 2019, 6 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.38 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 5 a.m. N/A N/A N/A 26.0 ppb (24) N/A N/A N/A 0.44 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 18, 2019, 4 a.m. N/A N/A N/A 38.0 ppb (35) N/A N/A N/A 0.57 ppb (6) N/A N/A 35.0
 
March 18, 2019, 3 a.m. N/A N/A N/A 28.0 ppb (26) N/A N/A N/A 0.43 ppb (5) N/A N/A 26.0
 
March 18, 2019, 2 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A N/A N/A N/A N/A 23.0
 
March 18, 2019, 1 a.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A 0.54 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.38 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
March 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
March 17, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
March 17, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
March 17, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.21 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 17, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
March 17, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
March 17, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 17, 2019, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 17, 2019, noon N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.27 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 17, 2019, 11 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.49 ppb (5) N/A 2.0 μg/m3 (8) 22.0
 
March 17, 2019, 10 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.26 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
March 17, 2019, 7 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 17, 2019, 6 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.29 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
March 17, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 17, 2019, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) N/A N/A 4.0
 
March 17, 2019, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) N/A N/A 5.0
 
March 17, 2019, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (2) N/A N/A 4.0
 
March 17, 2019, 1 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
 
March 17, 2019, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 16, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A 1.0 μg/m3 (4) 4.0
 
March 16, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 16, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 16, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 16, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 16, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
March 16, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 16, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 16, 2019, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (2) N/A -2.0 μg/m3 (0) 2.0
 
March 16, 2019, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.22 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 16, 2019, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.25 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 16, 2019, noon N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A -1.0 μg/m3 (0) 4.0
 
March 16, 2019, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (2) N/A 0.0 μg/m3 (0) 3.0
 
March 16, 2019, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 16, 2019, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 16, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.19 ppb (2) N/A -2.0 μg/m3 (0) 3.0
 
March 16, 2019, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.19 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 16, 2019, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
March 16, 2019, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 16, 2019, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A N/A 3.0
 
March 16, 2019, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 16, 2019, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 16, 2019, 1 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 16, 2019, midnight N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
March 15, 2019, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.29 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 15, 2019, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 15, 2019, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 15, 2019, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 15, 2019, 6 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 15, 2019, 5 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.28 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
March 15, 2019, 4 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.29 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 15, 2019, 3 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.26 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
March 15, 2019, 2 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.26 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
March 15, 2019, 1 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.28 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 15, 2019, noon N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.32 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 15, 2019, 11 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.32 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 15, 2019, 10 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.32 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 15, 2019, 9 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.28 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 15, 2019, 8 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 15, 2019, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 15, 2019, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 15, 2019, 4 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.28 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 3 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 15, 2019, 2 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 1 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.42 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
March 15, 2019, midnight N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.43 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
March 14, 2019, 11 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.37 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
March 14, 2019, 10 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.42 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
March 14, 2019, 9 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.35 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 14, 2019, 8 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 14, 2019, 7 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.29 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 14, 2019, 6 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.28 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 14, 2019, 5 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 14, 2019, 4 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.29 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 14, 2019, 3 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.3 ppb (3) N/A 17.0 μg/m3 (61) 61.0
 
March 14, 2019, 2 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.36 ppb (4) N/A N/A 15.0
 
March 14, 2019, 1 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A N/A 0.4 ppb (4) N/A N/A 19.0
 
March 14, 2019, noon N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 0.86 ppb (10) N/A 14.0 μg/m3 (54) 54.0
 
March 14, 2019, 11 a.m. N/A N/A N/A 50.0 ppb (46) N/A N/A N/A 0.8 ppb (9) N/A 19.0 μg/m3 (65) 65.0
 
March 14, 2019, 10 a.m. N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 0.66 ppb (7) N/A 13.0 μg/m3 (52) 52.0
 
March 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.57 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
March 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 14, 2019, 7 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.26 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 14, 2019, 6 a.m. N/A N/A N/A 23.0 ppb (21) N/A N/A N/A 0.34 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 14, 2019, 5 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 14, 2019, 4 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.34 ppb (4) N/A N/A 15.0
 
March 14, 2019, 3 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.34 ppb (4) N/A N/A 13.0
 
March 14, 2019, 2 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) N/A N/A 15.0
 
March 14, 2019, 1 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.4 ppb (4) N/A N/A 18.0
 
March 14, 2019, midnight N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.4 ppb (4) N/A N/A 18.0
 
March 13, 2019, 11 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.37 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 13, 2019, 10 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 13, 2019, 9 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A N/A 0.37 ppb (4) N/A 3.0 μg/m3 (12) 15.0
 
March 13, 2019, 8 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.31 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 13, 2019, 7 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A 0.27 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 13, 2019, 6 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 0.28 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 13, 2019, 5 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 13, 2019, 4 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.31 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
March 13, 2019, 3 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.34 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 13, 2019, 2 p.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.34 ppb (4) N/A 15.0 μg/m3 (56) 56.0
 
March 13, 2019, 1 p.m. N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 1.06 ppb (12) N/A 21.0 μg/m3 (69) 69.0
 
March 13, 2019, noon N/A N/A N/A 51.0 ppb (47) N/A N/A N/A 1.8 ppb (20) N/A 21.0 μg/m3 (69) 69.0
 
March 13, 2019, 11 a.m. N/A N/A N/A 50.0 ppb (46) N/A N/A N/A 1.83 ppb (20) N/A 22.0 μg/m3 (71) 71.0
 
March 13, 2019, 10 a.m. N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 1.53 ppb (17) N/A 22.0 μg/m3 (71) 71.0
 
March 13, 2019, 9 a.m. N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 1.27 ppb (14) N/A 20.0 μg/m3 (67) 67.0
 
March 13, 2019, 8 a.m. N/A N/A N/A 37.0 ppb (34) N/A N/A N/A 1.04 ppb (12) N/A 14.0 μg/m3 (54) 54.0
 
March 13, 2019, 7 a.m. N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 0.81 ppb (9) N/A 13.0 μg/m3 (52) 52.0
 
March 13, 2019, 6 a.m. N/A N/A N/A 38.0 ppb (35) N/A N/A N/A 0.99 ppb (11) N/A 16.0 μg/m3 (59) 59.0
 
March 13, 2019, 5 a.m. N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 0.98 ppb (11) N/A 14.0 μg/m3 (54) 54.0
 
March 13, 2019, 4 a.m. N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 1.14 ppb (13) N/A 14.0 μg/m3 (54) 54.0
 
March 13, 2019, 3 a.m. N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 0.95 ppb (11) N/A 14.0 μg/m3 (54) 54.0
 
March 13, 2019, 2 a.m. N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 1.17 ppb (13) N/A 15.0 μg/m3 (56) 56.0
 
March 13, 2019, 1 a.m. N/A N/A N/A 35.0 ppb (32) N/A N/A N/A 0.67 ppb (7) N/A 14.0 μg/m3 (54) 54.0
 
March 13, 2019, midnight N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.32 ppb (4) N/A 4.0 μg/m3 (17) 18.0
 
March 12, 2019, 11 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A 0.26 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 12, 2019, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 12, 2019, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 12, 2019, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 12, 2019, 7 p.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 (29) 29.0
 
March 12, 2019, 6 p.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 (29) 29.0
 
March 12, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 12, 2019, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 12, 2019, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 12, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 12, 2019, 1 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.29 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 12, 2019, noon N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.28 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 12, 2019, 11 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 12, 2019, 10 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 0.29 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 12, 2019, 9 a.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
 
March 12, 2019, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 12, 2019, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
March 12, 2019, 6 a.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
 
March 12, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
March 12, 2019, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 5.0
 
March 12, 2019, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (2) N/A -1.0 μg/m3 (0) 5.0
 
March 12, 2019, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 12, 2019, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A -2.0 μg/m3 (0) 6.0
 
March 12, 2019, midnight N/A N/A N/A 7.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 11, 2019, 11 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A 0.25 ppb (3) N/A 0.0 μg/m3 (0) 9.0
 
March 11, 2019, 10 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.21 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 11, 2019, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 11, 2019, 8 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
 
March 11, 2019, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 11, 2019, 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 4.0 μg/m3 (17) 17.0
 
March 11, 2019, 5 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
 
March 11, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0