AQSQID: 250250042

Site Name: Boston - Roxbury

Location: Boston (Harrison Ave), MA

Reporting: True, Located: True

Current AQI: 42.0

Boston (Harrison Ave) MA, US: 42.329399, -71.082497

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Aug. 12, 2019, 1 p.m. 11.0 ppb (10) 5.0 ppb (5) 12.2 ppb (11) 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) 0.22 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 12, 2019, noon 16.0 ppb (15) 7.0 ppb (6) 18.1 ppb (17) 8.0 ppb (7) N/A 0.0 ppb (0) 16.0 ppb (12) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 12, 2019, 11 a.m. 17.0 ppb (16) 7.0 ppb (6) 20.7 ppb (19) 10.0 ppb (9) N/A 0.0 ppb (0) 12.0 ppb (9) 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 12, 2019, 10 a.m. 11.0 ppb (10) 3.0 ppb (3) 12.8 ppb (12) 7.0 ppb (6) N/A 0.0 ppb (0) 12.0 ppb (9) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 12, 2019, 9 a.m. 7.0 ppb (6) 2.0 ppb (2) 8.7 ppb (8) 5.0 ppb (5) N/A 0.0 ppb (0) 14.0 ppb (11) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 12, 2019, 8 a.m. 8.0 ppb (7) 1.0 ppb (1) 9.4 ppb (9) 6.0 ppb (6) N/A 0.0 ppb (0) 12.0 ppb (9) 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 12, 2019, 7 a.m. 8.0 ppb (7) 2.0 ppb (2) 10.2 ppb (9) 6.0 ppb (6) N/A 0.0 ppb (0) 15.0 ppb (12) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 12, 2019, 6 a.m. 7.0 ppb (6) 1.0 ppb (1) 8.1 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 15.0 ppb (12) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 12, 2019, 5 a.m. 6.0 ppb (6) 1.0 ppb (1) 6.8 ppb (6) 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 12, 2019, 4 a.m. 6.0 ppb (6) 1.0 ppb (1) 6.7 ppb (6) 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 12, 2019, 3 a.m. 4.0 ppb (4) 1.0 ppb (1) 5.2 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 12, 2019, 2 a.m. 5.0 ppb (5) 2.0 ppb (2) 6.0 ppb (6) 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 12, 2019, 1 a.m. 8.0 ppb (7) 2.0 ppb (2) 9.4 ppb (9) 6.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) 0.22 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 12, 2019, midnight 7.0 ppb (6) 2.0 ppb (2) 8.5 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Aug. 11, 2019, 11 p.m. 6.0 ppb (6) 2.0 ppb (2) 6.5 ppb (6) 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (15) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 11, 2019, 10 p.m. 6.0 ppb (6) 2.0 ppb (2) 6.8 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (16) 0.19 ppb (2) N/A 3.0 μg/m3 (12) 16.0
 
Aug. 11, 2019, 9 p.m. 7.0 ppb (6) 3.0 ppb (3) 8.2 ppb (8) 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 11, 2019, 8 p.m. 5.0 ppb (5) 3.0 ppb (3) 5.5 ppb (5) 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Aug. 11, 2019, 7 p.m. 4.0 ppb (4) 3.0 ppb (3) 4.8 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Aug. 11, 2019, 6 p.m. 7.0 ppb (6) 4.0 ppb (4) 8.4 ppb (8) 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 15.0
 
Aug. 11, 2019, 5 p.m. 6.0 ppb (6) 4.0 ppb (4) 7.3 ppb (7) 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 15.0
 
Aug. 11, 2019, 4 p.m. 5.0 ppb (5) 3.0 ppb (3) 5.8 ppb (5) 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 16.0
 
Aug. 11, 2019, 3 p.m. 5.0 ppb (5) 3.0 ppb (3) 5.7 ppb (5) 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 16.0
 
Aug. 11, 2019, 2 p.m. 5.0 ppb (5) 3.0 ppb (3) 6.2 ppb (6) 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (15) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 15.0
 
Aug. 11, 2019, 1 p.m. 7.0 ppb (6) 4.0 ppb (4) 8.4 ppb (8) 3.0 ppb (3) N/A 0.0 ppb (0) 15.0 ppb (12) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 11, 2019, noon 12.0 ppb (11) 7.0 ppb (6) 13.8 ppb (13) 4.0 ppb (4) N/A 0.0 ppb (0) 12.0 ppb (9) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 13.0
 
Aug. 11, 2019, 11 a.m. 18.0 ppb (17) 11.0 ppb (10) 19.4 ppb (18) 7.0 ppb (6) N/A 0.0 ppb (0) 9.0 ppb (7) 0.14 ppb (2) N/A 0.0 μg/m3 (0) 18.0
 
Aug. 11, 2019, 10 a.m. 5.0 ppb (5) 2.0 ppb (2) 6.3 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 2.0 μg/m3 (8) 9.0
 
Aug. 11, 2019, 9 a.m. 4.0 ppb (4) 2.0 ppb (2) 4.5 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 13.0 ppb (10) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 11, 2019, 8 a.m. 6.0 ppb (6) 2.0 ppb (2) 6.5 ppb (6) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
Aug. 11, 2019, 7 a.m. N/A N/A 20.2 ppb (19) N/A N/A 0.0 ppb (0) 8.0 ppb (6) 0.13 ppb (1) N/A 0.0 μg/m3 (0) 19.0
 
Aug. 11, 2019, 6 a.m. N/A N/A 10.8 ppb (10) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 10.0
 
Aug. 11, 2019, 5 a.m. N/A N/A 17.3 ppb (16) N/A N/A 0.0 ppb (0) 9.0 ppb (7) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 16.0
 
Aug. 11, 2019, 4 a.m. 15.0 ppb (14) 6.0 ppb (6) 15.9 ppb (15) 8.0 ppb (7) N/A 0.0 ppb (0) 9.0 ppb (7) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 15.0
 
Aug. 11, 2019, 3 a.m. 16.0 ppb (15) 7.0 ppb (6) 18.8 ppb (17) 9.0 ppb (8) N/A 0.0 ppb (0) 9.0 ppb (7) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 17.0
 
Aug. 11, 2019, 2 a.m. 14.0 ppb (13) 6.0 ppb (6) 14.9 ppb (14) 8.0 ppb (7) N/A 0.0 ppb (0) 11.0 ppb (8) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Aug. 11, 2019, 1 a.m. 22.0 ppb (20) 10.0 ppb (9) 24.6 ppb (23) 12.0 ppb (11) N/A 0.0 ppb (0) 6.0 ppb (5) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 11, 2019, midnight 12.0 ppb (11) 5.0 ppb (5) 14.1 ppb (13) 7.0 ppb (6) N/A 0.0 ppb (0) 12.0 ppb (9) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 10, 2019, 11 p.m. 11.0 ppb (10) 4.0 ppb (4) 11.9 ppb (11) 7.0 ppb (6) N/A 0.0 ppb (0) 14.0 ppb (11) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 10, 2019, 10 p.m. 14.0 ppb (13) 7.0 ppb (6) 15.1 ppb (14) 7.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (12) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 10, 2019, 9 p.m. 6.0 ppb (6) 3.0 ppb (3) 8.1 ppb (8) 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) 0.14 ppb (2) N/A 1.0 μg/m3 (4) 15.0
 
Aug. 10, 2019, 8 p.m. 4.0 ppb (4) 2.0 ppb (2) 4.8 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
Aug. 10, 2019, 7 p.m. 7.0 ppb (6) 3.0 ppb (3) 7.9 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 10, 2019, 6 p.m. 4.0 ppb (4) 3.0 ppb (3) 4.7 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Aug. 10, 2019, 5 p.m. 5.0 ppb (5) 3.0 ppb (3) 5.7 ppb (5) 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 19.0
 
Aug. 10, 2019, 4 p.m. 4.0 ppb (4) 2.0 ppb (2) 4.5 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 21.0
 
Aug. 10, 2019, 3 p.m. 5.0 ppb (5) 3.0 ppb (3) 5.5 ppb (5) 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 20.0
 
Aug. 10, 2019, 2 p.m. 7.0 ppb (6) 3.0 ppb (3) 8.5 ppb (8) 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Aug. 10, 2019, 1 p.m. 5.0 ppb (5) 3.0 ppb (3) 6.2 ppb (6) 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.14 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 10, 2019, noon 6.0 ppb (6) 3.0 ppb (3) 7.3 ppb (7) 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 10, 2019, 11 a.m. 6.0 ppb (6) 2.0 ppb (2) 7.2 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 20.0
 
Aug. 10, 2019, 10 a.m. 7.0 ppb (6) 2.0 ppb (2) 7.8 ppb (7) 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 19.0
 
Aug. 10, 2019, 9 a.m. 4.0 ppb (4) 1.0 ppb (1) 5.0 ppb (5) 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 20.0
 
Aug. 10, 2019, 8 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 10, 2019, 7 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 15.0
 
Aug. 10, 2019, 6 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 10, 2019, 5 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (15) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 10, 2019, 4 a.m. 10.0 ppb (9) 2.0 ppb (2) 11.3 ppb (10) 8.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (13) 0.23 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 10, 2019, 3 a.m. 10.0 ppb (9) 2.0 ppb (2) 11.4 ppb (11) 8.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (15) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 10, 2019, 2 a.m. 26.0 ppb (24) 9.0 ppb (8) 29.0 ppb (27) 17.0 ppb (16) N/A 0.0 ppb (0) 15.0 ppb (12) 0.24 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Aug. 10, 2019, 1 a.m. 11.0 ppb (10) 2.0 ppb (2) 14.8 ppb (14) 9.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (17) 0.29 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 10, 2019, midnight 18.0 ppb (17) 5.0 ppb (5) 20.8 ppb (19) 13.0 ppb (12) N/A 0.0 ppb (0) 21.0 ppb (16) 0.29 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 9, 2019, 11 p.m. 10.0 ppb (9) 2.0 ppb (2) 12.5 ppb (12) 7.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.23 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 9, 2019, 10 p.m. 9.0 ppb (8) 3.0 ppb (3) 10.7 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 9, 2019, 9 p.m. 7.0 ppb (6) 3.0 ppb (3) 7.8 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 9, 2019, 8 p.m. 6.0 ppb (6) 3.0 ppb (3) 6.8 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 9, 2019, 7 p.m. 8.0 ppb (7) 3.0 ppb (3) 9.3 ppb (9) 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 9, 2019, 6 p.m. 7.0 ppb (6) 3.0 ppb (3) 7.9 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (25) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 9, 2019, 5 p.m. 7.0 ppb (6) 3.0 ppb (3) 8.1 ppb (8) 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (25) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 9, 2019, 4 p.m. 9.0 ppb (8) 4.0 ppb (4) 10.3 ppb (10) 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (23) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 9, 2019, 3 p.m. 7.0 ppb (6) 3.0 ppb (3) 7.4 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (25) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 25.0
 
Aug. 9, 2019, 2 p.m. 8.0 ppb (7) 3.0 ppb (3) 8.6 ppb (8) 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 24.0
 
Aug. 9, 2019, 1 p.m. 12.0 ppb (11) 5.0 ppb (5) 13.8 ppb (13) 7.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (22) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 9, 2019, noon 10.0 ppb (9) 4.0 ppb (4) 12.2 ppb (11) 7.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (21) 0.21 ppb (2) N/A 3.0 μg/m3 (12) 21.0
 
Aug. 9, 2019, 11 a.m. 16.0 ppb (15) 4.0 ppb (4) 18.3 ppb (17) 11.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (18) 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 9, 2019, 10 a.m. 11.0 ppb (10) 2.0 ppb (2) 12.3 ppb (11) 9.0 ppb (8) N/A 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 9, 2019, 9 a.m. 10.0 ppb (9) 2.0 ppb (2) 11.3 ppb (10) 8.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (22) 0.2 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
Aug. 9, 2019, 8 a.m. 4.0 ppb (4) 1.0 ppb (1) 4.3 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 28.0
 
Aug. 9, 2019, 7 a.m. 6.0 ppb (6) 2.0 ppb (2) 6.3 ppb (6) 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 9, 2019, 6 a.m. 2.0 ppb (2) 1.0 ppb (1) 3.0 ppb (3) 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) 0.14 ppb (2) N/A 8.0 μg/m3 (33) 34.0
 
Aug. 9, 2019, 5 a.m. 4.0 ppb (4) 1.0 ppb (1) 4.2 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 34.0
 
Aug. 9, 2019, 4 a.m. 4.0 ppb (4) 1.0 ppb (1) 5.1 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 34.0
 
Aug. 9, 2019, 3 a.m. 5.0 ppb (5) 1.0 ppb (1) 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 35.0
 
Aug. 9, 2019, 2 a.m. 4.0 ppb (4) 1.0 ppb (1) 4.7 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 39.0
 
Aug. 9, 2019, 1 a.m. 8.0 ppb (7) 1.0 ppb (1) 10.7 ppb (10) 7.0 ppb (6) N/A 0.0 ppb (0) 66.0 ppb (51) 0.33 ppb (4) N/A 10.0 μg/m3 (42) 51.0
 
Aug. 9, 2019, midnight 6.0 ppb (6) 1.0 ppb (1) 8.3 ppb (8) 5.0 ppb (5) N/A 0.0 ppb (0) 57.0 ppb (44) 0.29 ppb (3) N/A 8.0 μg/m3 (33) 44.0
 
Aug. 8, 2019, 11 p.m. 6.0 ppb (6) 1.0 ppb (1) 8.0 ppb (7) 5.0 ppb (5) N/A 0.0 ppb (0) 50.0 ppb (38) 0.3 ppb (3) N/A 8.0 μg/m3 (33) 38.0
 
Aug. 8, 2019, 10 p.m. 5.0 ppb (5) 1.0 ppb (1) 7.3 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 51.0 ppb (39) 0.26 ppb (3) N/A 6.0 μg/m3 (25) 39.0
 
Aug. 8, 2019, 9 p.m. 5.0 ppb (5) 2.0 ppb (2) 5.9 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.26 ppb (3) N/A 6.0 μg/m3 (25) 37.0
 
Aug. 8, 2019, 8 p.m. 5.0 ppb (5) 2.0 ppb (2) 5.6 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.22 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Aug. 8, 2019, 7 p.m. 5.0 ppb (5) 2.0 ppb (2) 7.2 ppb (7) 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 37.0
 
Aug. 8, 2019, 6 p.m. 6.0 ppb (6) 2.0 ppb (2) 8.3 ppb (8) 4.0 ppb (4) N/A 0.0 ppb (0) 49.0 ppb (38) 0.18 ppb (2) N/A N/A 38.0
 
Aug. 8, 2019, 5 p.m. 6.0 ppb (6) 2.0 ppb (2) 7.6 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
Aug. 8, 2019, 4 p.m. 5.0 ppb (5) 2.0 ppb (2) 6.4 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
Aug. 8, 2019, 3 p.m. 6.0 ppb (6) 2.0 ppb (2) 7.3 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 43.0 ppb (33) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 33.0
 
Aug. 8, 2019, 2 p.m. 9.0 ppb (8) 4.0 ppb (4) 10.5 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.22 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
Aug. 8, 2019, 1 p.m. 7.0 ppb (6) 2.0 ppb (2) 8.3 ppb (8) 5.0 ppb (5) N/A 0.0 ppb (0) 39.0 ppb (30) 0.22 ppb (2) N/A 7.0 μg/m3 (29) 30.0
 
Aug. 8, 2019, noon 8.0 ppb (7) 3.0 ppb (3) 11.1 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 8, 2019, 11 a.m. 14.0 ppb (13) 4.0 ppb (4) 17.6 ppb (16) 10.0 ppb (9) N/A 0.0 ppb (0) 26.0 ppb (20) 0.22 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 8, 2019, 10 a.m. 9.0 ppb (8) 2.0 ppb (2) 10.6 ppb (10) 7.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
Aug. 8, 2019, 9 a.m. 21.0 ppb (19) 13.0 ppb (12) 18.2 ppb (17) 8.0 ppb (7) N/A 0.0 ppb (0) 30.0 ppb (23) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 23.0
 
Aug. 8, 2019, 8 a.m. 4.0 ppb (4) 1.0 ppb (1) 4.0 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
Aug. 8, 2019, 7 a.m. N/A N/A 3.2 ppb (3) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 32.0
 
Aug. 8, 2019, 6 a.m. N/A N/A 1.8 ppb (2) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 35.0
 
Aug. 8, 2019, 5 a.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 36.0
 
Aug. 8, 2019, 4 a.m. 10.0 ppb (9) 1.0 ppb (1) 12.7 ppb (12) 8.0 ppb (7) N/A 0.0 ppb (0) 41.0 ppb (32) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 32.0
 
Aug. 8, 2019, 3 a.m. 7.0 ppb (6) 1.0 ppb (1) 8.1 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 35.0
 
Aug. 8, 2019, 2 a.m. 5.0 ppb (5) 1.0 ppb (1) 6.4 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 29.0
 
Aug. 8, 2019, 1 a.m. 5.0 ppb (5) 1.0 ppb (1) 6.0 ppb (6) 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 28.0
 
Aug. 8, 2019, midnight 4.0 ppb (4) 1.0 ppb (1) 4.7 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
Aug. 7, 2019, 11 p.m. 5.0 ppb (5) 2.0 ppb (2) 6.0 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.22 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 7, 2019, 10 p.m. 4.0 ppb (4) 2.0 ppb (2) 5.3 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.21 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Aug. 7, 2019, 9 p.m. 5.0 ppb (5) 2.0 ppb (2) 6.7 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 7, 2019, 8 p.m. 4.0 ppb (4) 2.0 ppb (2) 5.9 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 35.0
 
Aug. 7, 2019, 7 p.m. 7.0 ppb (6) 2.0 ppb (2) 8.6 ppb (8) 5.0 ppb (5) N/A 0.0 ppb (0) 45.0 ppb (35) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 35.0
 
Aug. 7, 2019, 6 p.m. 6.0 ppb (6) 2.0 ppb (2) 7.3 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) 0.23 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Aug. 7, 2019, 5 p.m. 6.0 ppb (6) 2.0 ppb (2) 7.7 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) 0.27 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Aug. 7, 2019, 4 p.m. 6.0 ppb (6) 2.0 ppb (2) 7.7 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 50.0 ppb (38) 0.26 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Aug. 7, 2019, 3 p.m. 6.0 ppb (6) 2.0 ppb (2) 8.3 ppb (8) 5.0 ppb (5) N/A 0.0 ppb (0) 49.0 ppb (38) 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 7, 2019, 2 p.m. 7.0 ppb (6) 2.0 ppb (2) 8.8 ppb (8) 5.0 ppb (5) N/A 0.0 ppb (0) 42.0 ppb (32) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 32.0
 
Aug. 7, 2019, 1 p.m. 6.0 ppb (6) 2.0 ppb (2) 7.4 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 43.0 ppb (33) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 33.0
 
Aug. 7, 2019, noon 8.0 ppb (7) 3.0 ppb (3) 10.6 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (26) 0.22 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 7, 2019, 11 a.m. 10.0 ppb (9) 3.0 ppb (3) 12.5 ppb (12) 7.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 7, 2019, 10 a.m. 10.0 ppb (9) 2.0 ppb (2) 12.7 ppb (12) 8.0 ppb (7) N/A N/A 24.0 ppb (18) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 7, 2019, 9 a.m. 6.0 ppb (6) 1.0 ppb (1) 6.9 ppb (6) 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 7, 2019, 8 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.18 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 7, 2019, 7 a.m. 10.0 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (13) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 7, 2019, 6 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) 0.21 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Aug. 7, 2019, 5 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (18) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 7, 2019, 4 a.m. 7.0 ppb (6) 1.0 ppb (1) 8.9 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 7, 2019, 3 a.m. 8.0 ppb (7) 1.0 ppb (1) 9.9 ppb (9) 7.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 7, 2019, 2 a.m. 7.0 ppb (6) 1.0 ppb (1) 9.0 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 7, 2019, 1 a.m. 7.0 ppb (6) 1.0 ppb (1) 9.4 ppb (9) 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) 0.28 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Aug. 7, 2019, midnight 8.0 ppb (7) 1.0 ppb (1) 10.3 ppb (10) 7.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.3 ppb (3) N/A 20.0 μg/m3 (67) 67.0
 
Aug. 6, 2019, 11 p.m. 11.0 ppb (10) 3.0 ppb (3) 12.1 ppb (11) 9.0 ppb (8) N/A 0.0 ppb (0) 43.0 ppb (33) 0.32 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 6, 2019, 10 p.m. 21.0 ppb (19) 3.0 ppb (3) 26.9 ppb (25) 18.0 ppb (17) N/A 0.0 ppb (0) 25.0 ppb (19) 0.28 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 6, 2019, 9 p.m. 29.0 ppb (27) 7.0 ppb (6) 37.0 ppb (34) 23.0 ppb (21) N/A 0.0 ppb (0) 17.0 ppb (13) 0.29 ppb (3) N/A 8.0 μg/m3 (33) 34.0
 
Aug. 6, 2019, 8 p.m. 9.0 ppb (8) 3.0 ppb (3) 13.4 ppb (12) 7.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) 0.25 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 6, 2019, 7 p.m. 8.0 ppb (7) 3.0 ppb (3) 10.0 ppb (9) 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (25) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 6, 2019, 6 p.m. 19.0 ppb (18) 6.0 ppb (6) 19.0 ppb (18) 13.0 ppb (12) N/A 0.0 ppb (0) 25.0 ppb (19) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 6, 2019, 5 p.m. 14.0 ppb (13) 4.0 ppb (4) 18.1 ppb (17) 11.0 ppb (10) N/A 0.0 ppb (0) 24.0 ppb (18) 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 6, 2019, 4 p.m. 11.0 ppb (10) 4.0 ppb (4) 12.8 ppb (12) 7.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.18 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Aug. 6, 2019, 3 p.m. 11.0 ppb (10) 4.0 ppb (4) 14.3 ppb (13) 8.0 ppb (7) N/A 0.0 ppb (0) 35.0 ppb (27) 0.23 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Aug. 6, 2019, 2 p.m. 12.0 ppb (11) 4.0 ppb (4) 15.1 ppb (14) 8.0 ppb (7) N/A 0.0 ppb (0) 33.0 ppb (25) 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 6, 2019, 1 p.m. 13.0 ppb (12) 5.0 ppb (5) 15.4 ppb (14) 8.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (21) 0.27 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 6, 2019, noon 9.0 ppb (8) 3.0 ppb (3) 10.7 ppb (10) 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (18) 0.23 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 6, 2019, 11 a.m. 13.0 ppb (12) 4.0 ppb (4) 15.4 ppb (14) 9.0 ppb (8) N/A 0.0 ppb (0) 16.0 ppb (12) 0.26 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 6, 2019, 10 a.m. 9.0 ppb (8) 3.0 ppb (3) 11.1 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 6, 2019, 9 a.m. 7.0 ppb (6) 1.0 ppb (1) 8.8 ppb (8) 5.0 ppb (5) N/A 0.0 ppb (0) 14.0 ppb (11) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 6, 2019, 8 a.m. 6.0 ppb (6) 1.0 ppb (1) 7.5 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (12) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 6, 2019, 7 a.m. 6.0 ppb (6) 1.0 ppb (1) 7.5 ppb (7) 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (13) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 6, 2019, 6 a.m. 9.0 ppb (8) 1.0 ppb (1) 11.3 ppb (10) 8.0 ppb (7) N/A 0.0 ppb (0) 16.0 ppb (12) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 6, 2019, 5 a.m. 6.0 ppb (6) 1.0 ppb (1) 7.6 ppb (7) 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (16) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Aug. 6, 2019, 4 a.m. 6.0 ppb (6) 1.0 ppb (1) 7.8 ppb (7) 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (18) 0.16 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Aug. 6, 2019, 3 a.m. 5.0 ppb (5) 1.0 ppb (1) 6.3 ppb (6) 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 6, 2019, 2 a.m. 4.0 ppb (4) 1.0 ppb (1) 4.8 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 6, 2019, 1 a.m. 5.0 ppb (5) 1.0 ppb (1) 6.7 ppb (6) 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Aug. 6, 2019, midnight 8.0 ppb (7) 1.0 ppb (1) 9.6 ppb (9) 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.22 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 5, 2019, 11 p.m. 8.0 ppb (7) 1.0 ppb (1) 10.6 ppb (10) 7.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Aug. 5, 2019, 10 p.m. 6.0 ppb (6) 2.0 ppb (2) 8.0 ppb (7) 5.0 ppb (5) N/A 0.0 ppb (0) 50.0 ppb (38) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 38.0
 
Aug. 5, 2019, 9 p.m. 6.0 ppb (6) 2.0 ppb (2) 7.8 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 56.0 ppb (43) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 43.0
 
Aug. 5, 2019, 8 p.m. 6.0 ppb (6) 2.0 ppb (2) 8.7 ppb (8) 4.0 ppb (4) N/A 0.0 ppb (0) 50.0 ppb (38) 0.17 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Aug. 5, 2019, 7 p.m. 5.0 ppb (5) 2.0 ppb (2) 6.3 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
Aug. 5, 2019, 6 p.m. 6.0 ppb (6) 2.0 ppb (2) 8.3 ppb (8) 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 35.0
 
Aug. 5, 2019, 5 p.m. 9.0 ppb (8) 3.0 ppb (3) 12.0 ppb (11) 6.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 32.0
 
Aug. 5, 2019, 4 p.m. 10.0 ppb (9) 3.0 ppb (3) 12.2 ppb (11) 7.0 ppb (6) N/A 0.0 ppb (0) 43.0 ppb (33) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 33.0
 
Aug. 5, 2019, 3 p.m. 9.0 ppb (8) 3.0 ppb (3) 11.6 ppb (11) 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
Aug. 5, 2019, 2 p.m. 9.0 ppb (8) 4.0 ppb (4) 11.3 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0