AQSQID: 060010015

Site Name: Pleasanton - Owens Ct.

Location: Pleasanton (Arthur H. Breed Junior Fwy), CA

Reporting: True, Located: True

Current AQI: 4.0

Pleasanton (Arthur H. Breed Junior Fwy) CA, US: 37.701222, -121.903019

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 18, 2019, 8 a.m. 2.5 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.33 ppb (4) N/A 1.0 μg/m3 (4) 4.0
 
Sept. 18, 2019, 7 a.m. 3.3 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.33 ppb (4) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 18, 2019, 6 a.m. 4.3 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.34 ppb (4) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 18, 2019, 5 a.m. 4.6 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.34 ppb (4) N/A 0.0 μg/m3 (0) 4.0
 
Sept. 18, 2019, 4 a.m. 5.4 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.34 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 3 a.m. 12.3 ppb (11) 3.5 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.41 ppb (5) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 2 a.m. 9.5 ppb (9) 1.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.38 ppb (4) N/A 1.0 μg/m3 (4) 9.0
 
Sept. 18, 2019, 1 a.m. 14.7 ppb (14) 4.8 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.48 ppb (5) N/A 1.0 μg/m3 (4) 14.0
 
Sept. 18, 2019, midnight 10.8 ppb (10) 3.4 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.39 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 11 p.m. 6.1 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.33 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 10 p.m. 13.9 ppb (13) 4.6 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 9 p.m. 15.2 ppb (14) 4.5 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.42 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 8 p.m. 14.9 ppb (14) 4.2 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.46 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 7 p.m. 31.3 ppb (29) 14.6 ppb (14) N/A 17.0 ppb (16) N/A N/A N/A 0.55 ppb (6) N/A N/A 29.0
 
Sept. 17, 2019, 6 p.m. 20.6 ppb (19) 9.0 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.43 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 5 p.m. 30.9 ppb (29) 15.7 ppb (15) N/A 15.0 ppb (14) N/A N/A N/A 0.53 ppb (6) N/A 5.0 μg/m3 (21) 29.0
 
Sept. 17, 2019, 4 p.m. 63.0 ppb (60) 41.1 ppb (38) N/A 22.0 ppb (20) N/A N/A N/A 0.75 ppb (8) N/A 8.0 μg/m3 (33) 60.0
 
Sept. 17, 2019, 3 p.m. 30.9 ppb (29) 18.7 ppb (17) N/A 12.0 ppb (11) N/A N/A N/A 0.55 ppb (6) N/A 6.0 μg/m3 (25) 29.0
 
Sept. 17, 2019, 2 p.m. 55.5 ppb (52) 38.8 ppb (36) N/A 17.0 ppb (16) N/A N/A N/A 0.68 ppb (8) N/A 6.0 μg/m3 (25) 52.0
 
Sept. 17, 2019, 1 p.m. 49.3 ppb (46) 33.5 ppb (31) N/A 16.0 ppb (15) N/A N/A N/A 0.64 ppb (7) N/A 4.0 μg/m3 (17) 46.0
 
Sept. 17, 2019, noon 15.6 ppb (14) 3.2 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 2.0 μg/m3 (8) 14.0
 
Sept. 17, 2019, 11 a.m. 12.0 ppb (11) 1.2 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 0.35 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) N/A
Sept. 17, 2019, 9 a.m. 16.2 ppb (15) 4.3 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.39 ppb (4) N/A 2.0 μg/m3 (8) 15.0
 
Sept. 17, 2019, 8 a.m. 16.5 ppb (15) 4.2 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.39 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 7 a.m. 13.1 ppb (12) 2.1 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.41 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 6 a.m. 16.3 ppb (15) 2.5 ppb (2) N/A 14.0 ppb (13) N/A N/A N/A 0.43 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 5 a.m. 7.9 ppb (7) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 1.0 μg/m3 (4) 7.0
 
Sept. 17, 2019, 4 a.m. 10.9 ppb (10) 1.2 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.35 ppb (4) N/A 2.0 μg/m3 (8) 10.0
 
Sept. 17, 2019, 3 a.m. 8.2 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 2 a.m. 4.5 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.29 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 1 a.m. 3.6 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, midnight 5.8 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2019, 11 p.m. 4.1 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 16, 2019, 10 p.m. 5.3 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.33 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2019, 9 p.m. 13.7 ppb (13) 5.7 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A 0.37 ppb (4) N/A 1.0 μg/m3 (4) 13.0
 
Sept. 16, 2019, 8 p.m. 9.7 ppb (9) 3.8 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.33 ppb (4) N/A 1.0 μg/m3 (4) 9.0
 
Sept. 16, 2019, 7 p.m. 9.8 ppb (9) 3.6 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.31 ppb (3) N/A 1.0 μg/m3 (4) 9.0
 
Sept. 16, 2019, 6 p.m. 11.8 ppb (11) 4.6 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 1.0 μg/m3 (4) 11.0
 
Sept. 16, 2019, 5 p.m. 9.0 ppb (8) 3.2 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 16, 2019, 4 p.m. 10.9 ppb (10) 3.1 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 2.0 μg/m3 (8) 10.0
 
Sept. 16, 2019, 3 p.m. 34.8 ppb (32) 15.8 ppb (15) N/A 19.0 ppb (18) N/A N/A N/A 0.51 ppb (6) N/A 4.0 μg/m3 (17) 32.0
 
Sept. 16, 2019, 2 p.m. 20.0 ppb (19) 7.7 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A 0.42 ppb (5) N/A 3.0 μg/m3 (12) 19.0
 
Sept. 16, 2019, 1 p.m. 20.3 ppb (19) 10.9 ppb (10) N/A 9.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 0.0 μg/m3 (0) 19.0
 
Sept. 16, 2019, noon 4.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.28 ppb (3) N/A 0.0 μg/m3 (0) 4.0
 
Sept. 16, 2019, 11 a.m. 5.0 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.28 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2019, 9 a.m. 2.4 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (3) N/A -1.0 μg/m3 (0) 3.0
 
Sept. 16, 2019, 8 a.m. 2.4 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.26 ppb (3) N/A -2.0 μg/m3 (0) 3.0
 
Sept. 16, 2019, 7 a.m. 2.3 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.28 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
Sept. 16, 2019, 6 a.m. 3.3 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.28 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
Sept. 16, 2019, 5 a.m. 2.0 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.27 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
Sept. 16, 2019, 4 a.m. 2.5 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.28 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 16, 2019, 3 a.m. 3.2 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.31 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 16, 2019, 2 a.m. 3.7 ppb (3) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.31 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 16, 2019, 1 a.m. 4.5 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 16, 2019, midnight 5.0 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 15, 2019, 11 p.m. 3.9 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.33 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, 10 p.m. 4.5 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.35 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, 9 p.m. 6.7 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.39 ppb (4) N/A 1.0 μg/m3 (4) 6.0
 
Sept. 15, 2019, 8 p.m. 4.8 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.32 ppb (4) N/A -1.0 μg/m3 (0) 4.0
 
Sept. 15, 2019, 7 p.m. 6.8 ppb (6) 2.2 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.39 ppb (4) N/A 0.0 μg/m3 (0) 6.0
 
Sept. 15, 2019, 6 p.m. 10.1 ppb (9) 3.9 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.47 ppb (5) N/A 2.0 μg/m3 (8) 9.0
 
Sept. 15, 2019, 5 p.m. 11.0 ppb (10) 4.8 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.49 ppb (5) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, 4 p.m. 8.1 ppb (8) 3.4 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.45 ppb (5) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 15, 2019, 3 p.m. 6.7 ppb (6) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.42 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 2 p.m. 6.4 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.38 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 15, 2019, 1 p.m. 3.8 ppb (4) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.34 ppb (4) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 15, 2019, noon 6.7 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.34 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, 11 a.m. 6.5 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.33 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 15, 2019, 9 a.m. 4.8 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, 8 a.m. 5.1 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 7 a.m. 5.8 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.35 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, 6 a.m. 11.3 ppb (10) 3.6 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.45 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 5 a.m. 14.5 ppb (13) 5.5 ppb (5) N/A 9.0 ppb (8) N/A N/A N/A 0.48 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 4 a.m. 18.1 ppb (17) 4.7 ppb (4) N/A 13.0 ppb (12) N/A N/A N/A 0.65 ppb (7) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 3 a.m. 21.3 ppb (20) 7.1 ppb (7) N/A 14.0 ppb (13) N/A N/A N/A 0.66 ppb (7) N/A 4.0 μg/m3 (17) 20.0
 
Sept. 15, 2019, 2 a.m. 7.4 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.38 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 1 a.m. 10.0 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.48 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, midnight 8.6 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.41 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 14, 2019, 11 p.m. 6.5 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.36 ppb (4) N/A 0.0 μg/m3 (0) 6.0
 
Sept. 14, 2019, 10 p.m. 10.2 ppb (9) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.42 ppb (5) N/A 1.0 μg/m3 (4) 9.0
 
Sept. 14, 2019, 9 p.m. 12.4 ppb (11) 3.1 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.46 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 14, 2019, 8 p.m. 21.7 ppb (20) 4.7 ppb (4) N/A 17.0 ppb (16) N/A N/A N/A 0.76 ppb (8) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 7 p.m. 21.9 ppb (20) 4.1 ppb (4) N/A 18.0 ppb (17) N/A N/A N/A 0.83 ppb (9) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 6 p.m. 22.7 ppb (21) 5.6 ppb (5) N/A 17.0 ppb (16) N/A N/A N/A 0.74 ppb (8) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 5 p.m. 13.5 ppb (12) 2.8 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.46 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 4 p.m. 21.9 ppb (20) 6.1 ppb (6) N/A 16.0 ppb (15) N/A N/A N/A 0.51 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 3 p.m. 53.0 ppb (49) 27.3 ppb (25) N/A 26.0 ppb (24) N/A N/A N/A 0.81 ppb (9) N/A 9.0 μg/m3 (38) 49.0
 
Sept. 14, 2019, 2 p.m. 52.7 ppb (49) 29.5 ppb (27) N/A 23.0 ppb (21) N/A N/A N/A 0.77 ppb (9) N/A 8.0 μg/m3 (33) 49.0
 
Sept. 14, 2019, 1 p.m. 26.4 ppb (24) 6.5 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A 0.52 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, noon 22.8 ppb (21) 6.4 ppb (6) N/A 16.0 ppb (15) N/A N/A N/A 0.47 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 11 a.m. 21.6 ppb (20) 7.1 ppb (7) N/A 15.0 ppb (14) N/A N/A N/A 0.41 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 9 a.m. 22.7 ppb (21) 6.2 ppb (6) N/A 16.0 ppb (15) N/A N/A N/A 0.45 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 8 a.m. 25.6 ppb (24) 8.3 ppb (8) N/A 17.0 ppb (16) N/A N/A N/A 0.52 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 7 a.m. 26.6 ppb (25) 7.6 ppb (7) N/A 19.0 ppb (18) N/A N/A N/A 0.61 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 6 a.m. 16.0 ppb (15) 2.5 ppb (2) N/A 14.0 ppb (13) N/A N/A N/A 0.49 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 14, 2019, 5 a.m. 14.2 ppb (13) 0.6 ppb (1) N/A 14.0 ppb (13) N/A N/A N/A 0.5 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 4 a.m. 16.6 ppb (15) 0.5 ppb (0) N/A 16.0 ppb (15) N/A N/A N/A 0.54 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 3 a.m. 27.8 ppb (26) 4.1 ppb (4) N/A 24.0 ppb (22) N/A N/A N/A 0.67 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 2 a.m. 28.3 ppb (26) 4.5 ppb (4) N/A 24.0 ppb (22) N/A N/A N/A 0.71 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 1 a.m. 13.3 ppb (12) 0.8 ppb (1) N/A 13.0 ppb (12) N/A N/A N/A 0.5 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, midnight 17.7 ppb (16) 1.6 ppb (1) N/A 16.0 ppb (15) N/A N/A N/A 0.56 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 11 p.m. 11.1 ppb (10) 1.3 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.45 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 10 p.m. 22.6 ppb (21) 3.7 ppb (3) N/A 19.0 ppb (18) N/A N/A N/A 0.58 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 9 p.m. 27.7 ppb (26) 6.5 ppb (6) N/A 21.0 ppb (19) N/A N/A N/A 0.59 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, 8 p.m. 23.2 ppb (21) 7.3 ppb (7) N/A 16.0 ppb (15) N/A N/A N/A 0.49 ppb (5) N/A 4.0 μg/m3 (17) 21.0
 
Sept. 13, 2019, 7 p.m. 40.5 ppb (38) 13.2 ppb (12) N/A 27.0 ppb (25) N/A N/A N/A 0.67 ppb (7) N/A 6.0 μg/m3 (25) 38.0
 
Sept. 13, 2019, 6 p.m. 26.0 ppb (24) 6.1 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A 0.53 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 13, 2019, 5 p.m. 54.6 ppb (51) 21.1 ppb (20) N/A 34.0 ppb (31) N/A N/A N/A 0.72 ppb (8) N/A 12.0 μg/m3 (50) 51.0
 
Sept. 13, 2019, 4 p.m. 86.1 ppb (84) 47.8 ppb (44) N/A 38.0 ppb (35) N/A N/A N/A 0.84 ppb (9) N/A 13.0 μg/m3 (52) 84.0
 
Sept. 13, 2019, 3 p.m. 49.9 ppb (46) 23.7 ppb (22) N/A 26.0 ppb (24) N/A N/A N/A 0.66 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 13, 2019, 2 p.m. 57.6 ppb (54) 30.1 ppb (28) N/A 27.0 ppb (25) N/A N/A N/A 0.63 ppb (7) N/A 9.0 μg/m3 (38) 54.0
 
Sept. 13, 2019, 1 p.m. 72.6 ppb (70) 43.2 ppb (40) N/A 29.0 ppb (27) N/A N/A N/A 0.83 ppb (9) N/A 11.0 μg/m3 (46) 70.0
 
Sept. 13, 2019, noon 55.9 ppb (52) 29.6 ppb (27) N/A 26.0 ppb (24) N/A N/A N/A 0.56 ppb (6) N/A 9.0 μg/m3 (38) 52.0
 
Sept. 13, 2019, 11 a.m. 45.2 ppb (42) 21.4 ppb (20) N/A 24.0 ppb (22) N/A N/A N/A 0.47 ppb (5) N/A 9.0 μg/m3 (38) 42.0
 
Sept. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 9 a.m. 33.0 ppb (31) 11.7 ppb (11) N/A 21.0 ppb (19) N/A N/A N/A 0.37 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 13, 2019, 8 a.m. 28.1 ppb (26) 8.5 ppb (8) N/A 20.0 ppb (19) N/A N/A N/A 0.45 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 7 a.m. 32.2 ppb (30) 9.9 ppb (9) N/A 22.0 ppb (20) N/A N/A N/A 0.45 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 13, 2019, 6 a.m. 25.6 ppb (24) 6.3 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.52 ppb (6) N/A 4.0 μg/m3 (17) 24.0
 
Sept. 13, 2019, 5 a.m. 31.3 ppb (29) 6.5 ppb (6) N/A 25.0 ppb (23) N/A N/A N/A 0.68 ppb (8) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 4 a.m. 36.8 ppb (34) 6.4 ppb (6) N/A 30.0 ppb (28) N/A N/A N/A 0.9 ppb (10) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 3 a.m. 28.4 ppb (26) 4.3 ppb (4) N/A 24.0 ppb (22) N/A N/A N/A 0.68 ppb (8) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 13, 2019, 2 a.m. 19.1 ppb (18) 1.6 ppb (1) N/A 18.0 ppb (17) N/A N/A N/A 0.61 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, 1 a.m. 13.3 ppb (12) 2.2 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.52 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, midnight 31.7 ppb (29) 8.2 ppb (8) N/A 24.0 ppb (22) N/A N/A N/A 0.65 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 11 p.m. 32.6 ppb (30) 10.2 ppb (9) N/A 22.0 ppb (20) N/A N/A N/A 0.56 ppb (6) N/A 7.0 μg/m3 (29) 30.0
 
Sept. 12, 2019, 10 p.m. 37.8 ppb (35) 12.6 ppb (12) N/A 25.0 ppb (23) N/A N/A N/A 0.68 ppb (8) N/A 8.0 μg/m3 (33) 35.0
 
Sept. 12, 2019, 9 p.m. 31.8 ppb (29) 10.7 ppb (10) N/A 21.0 ppb (19) N/A N/A N/A 0.55 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 8 p.m. 35.7 ppb (33) 13.1 ppb (12) N/A 23.0 ppb (21) N/A N/A N/A 0.63 ppb (7) N/A 5.0 μg/m3 (21) 33.0
 
Sept. 12, 2019, 7 p.m. 28.0 ppb (26) 10.5 ppb (10) N/A 18.0 ppb (17) N/A N/A N/A 0.58 ppb (6) N/A 5.0 μg/m3 (21) 26.0
 
Sept. 12, 2019, 6 p.m. 35.9 ppb (33) 14.0 ppb (13) N/A 22.0 ppb (20) N/A N/A N/A 0.57 ppb (6) N/A 7.0 μg/m3 (29) 33.0
 
Sept. 12, 2019, 5 p.m. 44.4 ppb (41) 19.5 ppb (18) N/A 25.0 ppb (23) N/A N/A N/A 0.54 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 12, 2019, 4 p.m. 56.0 ppb (52) 28.6 ppb (26) N/A 27.0 ppb (25) N/A N/A N/A 0.68 ppb (8) N/A 7.0 μg/m3 (29) 52.0
 
Sept. 12, 2019, 3 p.m. 66.0 ppb (63) 38.9 ppb (36) N/A 27.0 ppb (25) N/A N/A N/A 0.78 ppb (9) N/A 8.0 μg/m3 (33) 63.0
 
Sept. 12, 2019, 2 p.m. 66.6 ppb (63) 41.8 ppb (39) N/A 25.0 ppb (23) N/A N/A N/A 0.83 ppb (9) N/A 7.0 μg/m3 (29) 63.0
 
Sept. 12, 2019, 1 p.m. 57.9 ppb (54) 35.2 ppb (33) N/A 23.0 ppb (21) N/A N/A N/A 0.69 ppb (8) N/A 7.0 μg/m3 (29) 54.0
 
Sept. 12, 2019, noon 48.6 ppb (45) 25.7 ppb (24) N/A 23.0 ppb (21) N/A N/A N/A 0.61 ppb (7) N/A 5.0 μg/m3 (21) 45.0
 
Sept. 12, 2019, 11 a.m. 44.7 ppb (41) 20.0 ppb (19) N/A 25.0 ppb (23) N/A N/A N/A 0.48 ppb (5) N/A 3.0 μg/m3 (12) 41.0
 
Sept. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 12, 2019, 9 a.m. 21.6 ppb (20) 5.2 ppb (5) N/A 16.0 ppb (15) N/A N/A N/A 0.45 ppb (5) N/A 4.0 μg/m3 (17) 20.0
 
Sept. 12, 2019, 8 a.m. 19.8 ppb (18) 4.7 ppb (4) N/A 15.0 ppb (14) N/A N/A N/A 0.39 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 7 a.m. 11.8 ppb (11) 0.4 ppb (0) N/A 11.0 ppb (10) N/A N/A N/A 0.38 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2019, 6 a.m. 11.9 ppb (11) 0.5 ppb (0) N/A 12.0 ppb (11) N/A N/A N/A 0.37 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2019, 5 a.m. 11.9 ppb (11) 0.5 ppb (0) N/A 11.0 ppb (10) N/A N/A N/A 0.38 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 4 a.m. 15.8 ppb (15) 0.8 ppb (1) N/A 15.0 ppb (14) N/A N/A N/A 0.46 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 3 a.m. 20.7 ppb (19) 3.2 ppb (3) N/A 18.0 ppb (17) N/A N/A N/A 0.48 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, 2 a.m. 18.4 ppb (17) 3.5 ppb (3) N/A 15.0 ppb (14) N/A N/A N/A 0.51 ppb (6) N/A 3.0 μg/m3 (12) 17.0
 
Sept. 12, 2019, 1 a.m. 12.3 ppb (11) 1.1 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 0.42 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, midnight 11.5 ppb (11) 1.3 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.42 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 11, 2019, 11 p.m. 13.2 ppb (12) 1.8 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.46 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 11, 2019, 10 p.m. 19.7 ppb (18) 5.1 ppb (5) N/A 15.0 ppb (14) N/A N/A N/A 0.48 ppb (5) N/A 2.0 μg/m3 (8) 18.0
 
Sept. 11, 2019, 9 p.m. 12.8 ppb (12) 3.4 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.43 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 11, 2019, 8 p.m. 29.1 ppb (27) 9.9 ppb (9) N/A 19.0 ppb (18) N/A N/A N/A 0.57 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 11, 2019, 7 p.m. 16.5 ppb (15) 5.1 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.47 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 11, 2019, 6 p.m. 17.9 ppb (17) 6.8 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 11, 2019, 5 p.m. 46.0 ppb (43) 25.8 ppb (24) N/A 20.0 ppb (19) N/A N/A N/A 0.6 ppb (7) N/A 5.0 μg/m3 (21) 43.0
 
Sept. 11, 2019, 4 p.m. 60.8 ppb (57) 37.9 ppb (35) N/A 23.0 ppb (21) N/A N/A N/A 0.64 ppb (7) N/A 4.0 μg/m3 (17) 57.0
 
Sept. 11, 2019, 3 p.m. 36.6 ppb (34) 21.0 ppb (19) N/A 16.0 ppb (15) N/A N/A N/A 0.56 ppb (6) N/A 5.0 μg/m3 (21) 34.0
 
Sept. 11, 2019, 2 p.m. 59.0 ppb (55) 40.3 ppb (37) N/A 19.0 ppb (18) N/A N/A N/A 0.76 ppb (8) N/A 6.0 μg/m3 (25) 55.0
 
Sept. 11, 2019, 1 p.m. 16.4 ppb (15) 3.4 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.39 ppb (4) N/A 3.0 μg/m3 (12) 15.0
 
Sept. 11, 2019, noon 10.9 ppb (10) 1.3 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 11, 2019, 11 a.m. 8.0 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.33 ppb (4) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 11, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 11, 2019, 9 a.m. 6.7 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.31 ppb (3) N/A 2.0 μg/m3 (8) 8.0