AQSQID: 250250042

Site Name: Boston - Roxbury

Location: Boston (Harrison Ave), MA

Reporting: True, Located: True

Current AQI: 20.0

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
Nov. 19, 2019, 7 p.m. 22.0 ppb (20) 8.0 ppb (7) 22.1 ppb (20) 14.0 ppb (13) N/A 1.0 ppb (1) 12.0 ppb (9) 0.31 ppb (3) N/A N/A 20.0
 
Nov. 19, 2019, 6 p.m. 24.0 ppb (22) 9.0 ppb (8) 25.3 ppb (23) 15.0 ppb (14) N/A 1.0 ppb (1) 12.0 ppb (9) 0.34 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 19, 2019, 5 p.m. 32.0 ppb (30) 11.0 ppb (10) 33.3 ppb (31) 21.0 ppb (19) N/A 1.0 ppb (1) 9.0 ppb (7) 0.33 ppb (4) N/A 6.0 μg/m3 (25) 31.0
 
Nov. 19, 2019, 4 p.m. 39.0 ppb (36) 16.0 ppb (15) 38.0 ppb (35) 23.0 ppb (21) N/A 1.0 ppb (1) 10.0 ppb (8) 0.32 ppb (4) N/A 8.0 μg/m3 (33) 36.0
 
Nov. 19, 2019, 3 p.m. 38.0 ppb (35) 14.0 ppb (13) 37.5 ppb (35) 23.0 ppb (21) N/A 1.0 ppb (1) 8.0 ppb (6) 0.33 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 19, 2019, 2 p.m. 49.0 ppb (45) 20.0 ppb (19) 51.1 ppb (47) 29.0 ppb (27) N/A 1.0 ppb (1) 3.0 ppb (2) 0.39 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 19, 2019, 1 p.m. 54.0 ppb (50) 23.0 ppb (21) 56.6 ppb (53) 31.0 ppb (29) N/A 1.0 ppb (1) 3.0 ppb (2) 0.39 ppb (4) N/A 13.0 μg/m3 (52) 53.0
 
Nov. 19, 2019, noon 48.0 ppb (44) 16.0 ppb (15) 51.7 ppb (48) 32.0 ppb (30) N/A 1.0 ppb (1) 1.0 ppb (1) 0.45 ppb (5) N/A 8.0 μg/m3 (33) 48.0
 
Nov. 19, 2019, 11 a.m. 38.0 ppb (35) 9.0 ppb (8) 41.2 ppb (38) 29.0 ppb (27) N/A 0.0 ppb (0) 2.0 ppb (2) 0.32 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 19, 2019, 10 a.m. 28.0 ppb (26) 6.0 ppb (6) 32.6 ppb (30) 23.0 ppb (21) N/A 0.0 ppb (0) 8.0 ppb (6) 0.26 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 19, 2019, 9 a.m. 18.0 ppb (17) 2.0 ppb (2) 21.2 ppb (20) 16.0 ppb (15) N/A 0.0 ppb (0) 15.0 ppb (12) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 19, 2019, 8 a.m. 11.0 ppb (10) 2.0 ppb (2) 11.8 ppb (11) 9.0 ppb (8) N/A 0.0 ppb (0) 21.0 ppb (16) 0.18 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 19, 2019, 7 a.m. 12.0 ppb (11) 3.0 ppb (3) 13.7 ppb (13) 10.0 ppb (9) N/A 0.0 ppb (0) 22.0 ppb (17) 0.16 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 19, 2019, 6 a.m. 10.0 ppb (9) 2.0 ppb (2) 11.1 ppb (10) 9.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 19, 2019, 5 a.m. 8.0 ppb (7) 2.0 ppb (2) 8.3 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (19) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 19, 2019, 4 a.m. 11.0 ppb (10) 2.0 ppb (2) 11.0 ppb (10) 9.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (18) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 19, 2019, 3 a.m. 12.0 ppb (11) 2.0 ppb (2) 12.8 ppb (12) 10.0 ppb (9) N/A 0.0 ppb (0) 20.0 ppb (15) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 19, 2019, 2 a.m. 12.0 ppb (11) 2.0 ppb (2) 12.6 ppb (12) 10.0 ppb (9) N/A 0.0 ppb (0) 20.0 ppb (15) 0.19 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 19, 2019, 1 a.m. 11.0 ppb (10) 2.0 ppb (2) 12.0 ppb (11) 9.0 ppb (8) N/A 0.0 ppb (0) 21.0 ppb (16) 0.19 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 19, 2019, midnight 11.0 ppb (10) 2.0 ppb (2) 12.2 ppb (11) 9.0 ppb (8) N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 18, 2019, 11 p.m. 13.0 ppb (12) 2.0 ppb (2) 13.4 ppb (12) 10.0 ppb (9) N/A 0.0 ppb (0) 21.0 ppb (16) 0.21 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 18, 2019, 10 p.m. 15.0 ppb (14) 3.0 ppb (3) 15.9 ppb (15) 12.0 ppb (11) N/A 0.0 ppb (0) 19.0 ppb (15) 0.23 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 18, 2019, 9 p.m. 15.0 ppb (14) 3.0 ppb (3) 15.7 ppb (15) 12.0 ppb (11) N/A 0.0 ppb (0) 18.0 ppb (14) 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 18, 2019, 8 p.m. 14.0 ppb (13) 3.0 ppb (3) 14.7 ppb (14) 11.0 ppb (10) N/A 0.0 ppb (0) 19.0 ppb (15) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 18, 2019, 7 p.m. 16.0 ppb (15) 4.0 ppb (4) 17.3 ppb (16) 13.0 ppb (12) N/A 0.0 ppb (0) 18.0 ppb (14) 0.23 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 18, 2019, 6 p.m. 15.0 ppb (14) 4.0 ppb (4) 15.7 ppb (15) 11.0 ppb (10) N/A 0.0 ppb (0) 19.0 ppb (15) 0.21 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 18, 2019, 5 p.m. 14.0 ppb (13) 4.0 ppb (4) 14.6 ppb (14) 10.0 ppb (9) N/A 0.0 ppb (0) 21.0 ppb (16) 0.19 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 18, 2019, 4 p.m. 17.0 ppb (16) 5.0 ppb (5) 17.3 ppb (16) 13.0 ppb (12) N/A 0.0 ppb (0) 20.0 ppb (15) 0.27 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 18, 2019, 3 p.m. 16.0 ppb (15) 4.0 ppb (4) 17.1 ppb (16) 12.0 ppb (11) N/A 0.0 ppb (0) 20.0 ppb (15) 0.29 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 18, 2019, 2 p.m. 17.0 ppb (16) 4.0 ppb (4) 17.2 ppb (16) 12.0 ppb (11) N/A 0.0 ppb (0) 20.0 ppb (15) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 18, 2019, 1 p.m. 19.0 ppb (18) 5.0 ppb (5) 19.5 ppb (18) 14.0 ppb (13) N/A 0.0 ppb (0) 18.0 ppb (14) 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 18, 2019, noon 23.0 ppb (21) 7.0 ppb (6) 21.1 ppb (20) 16.0 ppb (15) N/A 0.0 ppb (0) 17.0 ppb (13) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 18, 2019, 11 a.m. 17.0 ppb (16) 3.0 ppb (3) 18.2 ppb (17) 14.0 ppb (13) N/A 0.0 ppb (0) 18.0 ppb (14) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 18, 2019, 10 a.m. 11.0 ppb (10) 2.0 ppb (2) 11.8 ppb (11) 8.0 ppb (7) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 18, 2019, 9 a.m. 8.0 ppb (7) 2.0 ppb (2) 8.5 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (19) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 18, 2019, 8 a.m. 9.0 ppb (8) 2.0 ppb (2) 9.7 ppb (9) 7.0 ppb (6) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 18, 2019, 7 a.m. N/A N/A 11.0 ppb (10) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.16 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 18, 2019, 6 a.m. N/A N/A 11.5 ppb (11) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.18 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 18, 2019, 5 a.m. N/A N/A 12.2 ppb (11) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.19 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 18, 2019, 4 a.m. 15.0 ppb (14) 2.0 ppb (2) 16.1 ppb (15) 13.0 ppb (12) N/A 0.0 ppb (0) 20.0 ppb (15) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 18, 2019, 3 a.m. 15.0 ppb (14) 2.0 ppb (2) 16.0 ppb (15) 13.0 ppb (12) N/A 0.0 ppb (0) 23.0 ppb (18) 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 18, 2019, 2 a.m. 13.0 ppb (12) 2.0 ppb (2) 13.4 ppb (12) 11.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (22) 0.14 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 18, 2019, 1 a.m. 12.0 ppb (11) 2.0 ppb (2) 12.3 ppb (11) 10.0 ppb (9) N/A 0.0 ppb (0) 28.0 ppb (22) 0.15 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 18, 2019, midnight 11.0 ppb (10) 2.0 ppb (2) 11.2 ppb (10) 9.0 ppb (8) N/A 0.0 ppb (0) 30.0 ppb (23) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 17, 2019, 11 p.m. 21.0 ppb (19) 3.0 ppb (3) 21.4 ppb (20) 18.0 ppb (17) N/A 0.0 ppb (0) 19.0 ppb (15) 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 17, 2019, 10 p.m. 21.0 ppb (19) 3.0 ppb (3) 22.0 ppb (20) 18.0 ppb (17) N/A 0.0 ppb (0) 16.0 ppb (12) 0.26 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 17, 2019, 9 p.m. 16.0 ppb (15) 2.0 ppb (2) 17.0 ppb (16) 14.0 ppb (13) N/A 0.0 ppb (0) 20.0 ppb (15) 0.21 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 17, 2019, 8 p.m. 12.0 ppb (11) 3.0 ppb (3) 13.1 ppb (12) 10.0 ppb (9) N/A 0.0 ppb (0) 24.0 ppb (18) 0.19 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 17, 2019, 7 p.m. 15.0 ppb (14) 3.0 ppb (3) 15.4 ppb (14) 11.0 ppb (10) N/A 0.0 ppb (0) 22.0 ppb (17) 0.21 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 17, 2019, 6 p.m. 16.0 ppb (15) 4.0 ppb (4) 17.2 ppb (16) 12.0 ppb (11) N/A 0.0 ppb (0) 21.0 ppb (16) 0.21 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 17, 2019, 5 p.m. 17.0 ppb (16) 4.0 ppb (4) 18.2 ppb (17) 13.0 ppb (12) N/A 0.0 ppb (0) 20.0 ppb (15) 0.24 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 17, 2019, 4 p.m. 16.0 ppb (15) 4.0 ppb (4) 17.4 ppb (16) 12.0 ppb (11) N/A 0.0 ppb (0) 21.0 ppb (16) 0.23 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 17, 2019, 3 p.m. 18.0 ppb (17) 5.0 ppb (5) 18.5 ppb (17) 13.0 ppb (12) N/A 0.0 ppb (0) 20.0 ppb (15) 0.22 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 17, 2019, 2 p.m. 18.0 ppb (17) 5.0 ppb (5) 18.8 ppb (17) 13.0 ppb (12) N/A 0.0 ppb (0) 20.0 ppb (15) 0.21 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 17, 2019, 1 p.m. 18.0 ppb (17) 5.0 ppb (5) 19.6 ppb (18) 14.0 ppb (13) N/A 0.0 ppb (0) 19.0 ppb (15) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 17, 2019, noon 18.0 ppb (17) 3.0 ppb (3) 19.2 ppb (18) 15.0 ppb (14) N/A 0.0 ppb (0) 18.0 ppb (14) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 17, 2019, 11 a.m. 14.0 ppb (13) 2.0 ppb (2) 14.6 ppb (14) 12.0 ppb (11) N/A 0.0 ppb (0) 21.0 ppb (16) 0.17 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 17, 2019, 10 a.m. 14.0 ppb (13) 2.0 ppb (2) 15.0 ppb (14) 12.0 ppb (11) N/A N/A 21.0 ppb (16) 0.16 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 17, 2019, 9 a.m. 15.0 ppb (14) 2.0 ppb (2) 16.1 ppb (15) 13.0 ppb (12) N/A N/A 21.0 ppb (16) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 17, 2019, 8 a.m. 13.0 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 17, 2019, 7 a.m. 15.0 ppb (14) 2.0 ppb (2) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 17, 2019, 6 a.m. 16.0 ppb (15) 2.0 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 17, 2019, 5 a.m. 15.0 ppb (14) 2.0 ppb (2) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 22.0 ppb (17) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 17, 2019, 4 a.m. 16.0 ppb (15) 2.0 ppb (2) 17.2 ppb (16) 13.0 ppb (12) N/A 0.0 ppb (0) 22.0 ppb (17) 0.23 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 17, 2019, 3 a.m. 16.0 ppb (15) 2.0 ppb (2) 17.5 ppb (16) 14.0 ppb (13) N/A 0.0 ppb (0) 22.0 ppb (17) 0.21 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 17, 2019, 2 a.m. 17.0 ppb (16) 3.0 ppb (3) 18.2 ppb (17) 14.0 ppb (13) N/A 0.0 ppb (0) 21.0 ppb (16) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 17, 2019, 1 a.m. 17.0 ppb (16) 2.0 ppb (2) 18.2 ppb (17) 14.0 ppb (13) N/A 0.0 ppb (0) 22.0 ppb (17) 0.21 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 17, 2019, midnight 15.0 ppb (14) 2.0 ppb (2) 16.8 ppb (16) 13.0 ppb (12) N/A 0.0 ppb (0) 23.0 ppb (18) 0.22 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 16, 2019, 11 p.m. 12.0 ppb (11) 2.0 ppb (2) 13.4 ppb (12) 10.0 ppb (9) N/A 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 16, 2019, 10 p.m. 12.0 ppb (11) 2.0 ppb (2) 12.7 ppb (12) 10.0 ppb (9) N/A 0.0 ppb (0) 27.0 ppb (21) 0.19 ppb (2) N/A 3.0 μg/m3 (12) 21.0
 
Nov. 16, 2019, 9 p.m. 10.0 ppb (9) 2.0 ppb (2) 10.4 ppb (10) 8.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (22) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
Nov. 16, 2019, 8 p.m. 9.0 ppb (8) 3.0 ppb (3) 9.2 ppb (9) 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 24.0
 
Nov. 16, 2019, 7 p.m. 8.0 ppb (7) 3.0 ppb (3) 8.9 ppb (8) 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (24) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 24.0
 
Nov. 16, 2019, 6 p.m. 9.0 ppb (8) 4.0 ppb (4) 9.4 ppb (9) 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 16, 2019, 5 p.m. 9.0 ppb (8) 4.0 ppb (4) 9.7 ppb (9) 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 16, 2019, 4 p.m. 9.0 ppb (8) 4.0 ppb (4) 9.7 ppb (9) 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (24) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 16, 2019, 3 p.m. 10.0 ppb (9) 4.0 ppb (4) 10.7 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.17 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 16, 2019, 2 p.m. 10.0 ppb (9) 4.0 ppb (4) 10.9 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 16, 2019, 1 p.m. 12.0 ppb (11) 4.0 ppb (4) 12.6 ppb (12) 8.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (22) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 16, 2019, noon 12.0 ppb (11) 3.0 ppb (3) 12.4 ppb (11) 9.0 ppb (8) N/A 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 16, 2019, 11 a.m. 10.0 ppb (9) 2.0 ppb (2) 10.3 ppb (10) 8.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (22) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 22.0
 
Nov. 16, 2019, 10 a.m. 7.0 ppb (6) 2.0 ppb (2) 7.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 1.0 μg/m3 (4) 25.0
 
Nov. 16, 2019, 9 a.m. 6.0 ppb (6) 2.0 ppb (2) 6.1 ppb (6) 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 26.0
 
Nov. 16, 2019, 8 a.m. 5.0 ppb (5) 2.0 ppb (2) 5.1 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 28.0
 
Nov. 16, 2019, 7 a.m. 4.0 ppb (4) 2.0 ppb (2) 4.3 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 27.0
 
Nov. 16, 2019, 6 a.m. 5.0 ppb (5) 2.0 ppb (2) 5.2 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 16, 2019, 5 a.m. 14.0 ppb (13) 3.0 ppb (3) 15.7 ppb (15) 11.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (18) 0.19 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 16, 2019, 4 a.m. 12.0 ppb (11) 2.0 ppb (2) 13.8 ppb (13) 10.0 ppb (9) N/A 0.0 ppb (0) 24.0 ppb (18) 0.22 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 16, 2019, 3 a.m. 13.0 ppb (12) 3.0 ppb (3) 14.7 ppb (14) 10.0 ppb (9) N/A 0.0 ppb (0) 25.0 ppb (19) 0.23 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 16, 2019, 2 a.m. 19.0 ppb (18) 5.0 ppb (5) 20.8 ppb (19) 14.0 ppb (13) N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 16, 2019, 1 a.m. 27.0 ppb (25) 7.0 ppb (6) 28.8 ppb (27) 20.0 ppb (19) N/A 1.0 ppb (1) 17.0 ppb (13) 0.25 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 16, 2019, midnight 31.0 ppb (29) 6.0 ppb (6) 32.4 ppb (30) 25.0 ppb (23) N/A 1.0 ppb (1) 13.0 ppb (10) 0.45 ppb (5) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 15, 2019, 11 p.m. 34.0 ppb (31) 6.0 ppb (6) 37.0 ppb (34) 28.0 ppb (26) N/A 1.0 ppb (1) 11.0 ppb (8) 0.49 ppb (5) N/A 18.0 μg/m3 (63) 63.0
 
Nov. 15, 2019, 10 p.m. 30.0 ppb (28) 6.0 ppb (6) 32.8 ppb (30) 24.0 ppb (22) N/A 1.0 ppb (1) 17.0 ppb (13) 0.43 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 15, 2019, 9 p.m. 21.0 ppb (19) 4.0 ppb (4) 23.4 ppb (22) 17.0 ppb (16) N/A 1.0 ppb (1) 23.0 ppb (18) 0.36 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 15, 2019, 8 p.m. 15.0 ppb (14) 4.0 ppb (4) 17.6 ppb (16) 12.0 ppb (11) N/A 1.0 ppb (1) 30.0 ppb (23) 0.27 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 15, 2019, 7 p.m. 14.0 ppb (13) 4.0 ppb (4) 15.5 ppb (14) 10.0 ppb (9) N/A 1.0 ppb (1) 32.0 ppb (25) 0.24 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 15, 2019, 6 p.m. 14.0 ppb (13) 5.0 ppb (5) 15.5 ppb (14) 9.0 ppb (8) N/A 1.0 ppb (1) 32.0 ppb (25) 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 15, 2019, 5 p.m. 14.0 ppb (13) 5.0 ppb (5) 15.6 ppb (14) 9.0 ppb (8) N/A 1.0 ppb (1) 33.0 ppb (25) 0.23 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 15, 2019, 4 p.m. 15.0 ppb (14) 6.0 ppb (6) 16.1 ppb (15) 9.0 ppb (8) N/A 1.0 ppb (1) 31.0 ppb (24) 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 15, 2019, 3 p.m. 19.0 ppb (18) 8.0 ppb (7) 21.3 ppb (20) 11.0 ppb (10) N/A 1.0 ppb (1) 26.0 ppb (20) 0.25 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 15, 2019, 2 p.m. 22.0 ppb (20) 9.0 ppb (8) 24.4 ppb (23) 13.0 ppb (12) N/A 1.0 ppb (1) 22.0 ppb (17) 0.28 ppb (3) N/A 18.0 μg/m3 (63) 63.0
 
Nov. 15, 2019, 1 p.m. 42.0 ppb (39) 18.0 ppb (17) 43.4 ppb (40) 24.0 ppb (22) N/A 1.0 ppb (1) 12.0 ppb (9) 0.38 ppb (4) N/A 23.0 μg/m3 (73) 73.0
 
Nov. 15, 2019, noon 56.0 ppb (52) 26.0 ppb (24) 58.7 ppb (55) 31.0 ppb (29) N/A 1.0 ppb (1) 4.0 ppb (3) 0.44 ppb (5) N/A 16.0 μg/m3 (59) 59.0
 
Nov. 15, 2019, 11 a.m. 43.0 ppb (40) 12.0 ppb (11) 46.5 ppb (43) 30.0 ppb (28) N/A 0.0 ppb (0) 2.0 ppb (2) 0.42 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
Nov. 15, 2019, 10 a.m. 28.0 ppb (26) 5.0 ppb (5) 30.6 ppb (28) 23.0 ppb (21) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 15.0 μg/m3 (56) 56.0
 
Nov. 15, 2019, 9 a.m. 23.0 ppb (21) 3.0 ppb (3) 26.0 ppb (24) 20.0 ppb (19) N/A 0.0 ppb (0) 10.0 ppb (8) 0.32 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 15, 2019, 8 a.m. 20.0 ppb (19) 4.0 ppb (4) 21.3 ppb (20) 16.0 ppb (15) N/A 0.0 ppb (0) N/A 0.26 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 15, 2019, 7 a.m. N/A N/A 38.2 ppb (35) N/A N/A 0.0 ppb (0) 3.0 ppb (2) 0.41 ppb (5) N/A 17.0 μg/m3 (61) 61.0
 
Nov. 15, 2019, 6 a.m. N/A N/A 48.9 ppb (45) N/A N/A 1.0 ppb (1) 0.0 ppb (0) 0.5 ppb (6) N/A 15.0 μg/m3 (56) 56.0
 
Nov. 15, 2019, 5 a.m. N/A N/A 38.7 ppb (36) N/A N/A 0.0 ppb (0) 2.0 ppb (2) 0.4 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 15, 2019, 4 a.m. 48.0 ppb (44) 14.0 ppb (13) 50.5 ppb (47) 34.0 ppb (31) N/A 1.0 ppb (1) 1.0 ppb (1) 0.56 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 15, 2019, 3 a.m. 43.0 ppb (40) 10.0 ppb (9) 45.9 ppb (42) 33.0 ppb (31) N/A 0.0 ppb (0) 2.0 ppb (2) 0.45 ppb (5) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 15, 2019, 2 a.m. 60.0 ppb (56) 24.0 ppb (22) 64.0 ppb (61) 36.0 ppb (33) N/A 1.0 ppb (1) 0.0 ppb (0) 0.69 ppb (8) N/A 17.0 μg/m3 (61) 61.0
 
Nov. 15, 2019, 1 a.m. 52.0 ppb (48) 17.0 ppb (16) 55.0 ppb (51) 35.0 ppb (32) N/A 1.0 ppb (1) 0.0 ppb (0) 0.48 ppb (5) N/A 11.0 μg/m3 (46) 51.0
 
Nov. 15, 2019, midnight 67.0 ppb (64) 31.0 ppb (29) 70.5 ppb (68) 37.0 ppb (34) N/A 1.0 ppb (1) 0.0 ppb (0) 0.58 ppb (6) N/A 10.0 μg/m3 (42) 68.0
 
Nov. 14, 2019, 11 p.m. 40.0 ppb (37) 9.0 ppb (8) 42.6 ppb (39) 30.0 ppb (28) N/A 0.0 ppb (0) 4.0 ppb (3) 0.48 ppb (5) N/A 16.0 μg/m3 (59) 59.0
 
Nov. 14, 2019, 10 p.m. 28.0 ppb (26) 6.0 ppb (6) 27.7 ppb (26) 22.0 ppb (20) N/A 0.0 ppb (0) 13.0 ppb (10) 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 14, 2019, 9 p.m. 30.0 ppb (28) 7.0 ppb (6) 32.5 ppb (30) 23.0 ppb (21) N/A 0.0 ppb (0) 13.0 ppb (10) 0.37 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 14, 2019, 8 p.m. 23.0 ppb (21) 6.0 ppb (6) 24.4 ppb (23) 17.0 ppb (16) N/A 0.0 ppb (0) 19.0 ppb (15) 0.27 ppb (3) N/A 15.0 μg/m3 (56) 56.0
 
Nov. 14, 2019, 7 p.m. 25.0 ppb (23) 9.0 ppb (8) 22.8 ppb (21) 15.0 ppb (14) N/A N/A 20.0 ppb (15) 0.32 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
Nov. 14, 2019, 6 p.m. 19.0 ppb (18) 7.0 ppb (6) 19.0 ppb (18) 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 14, 2019, 5 p.m. 20.0 ppb (19) 8.0 ppb (7) 20.1 ppb (19) 13.0 ppb (12) N/A N/A 23.0 ppb (18) 0.23 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 14, 2019, 4 p.m. 23.0 ppb (21) 9.0 ppb (8) 23.7 ppb (22) 14.0 ppb (13) N/A N/A 21.0 ppb (16) 0.26 ppb (3) N/A 15.0 μg/m3 (56) 56.0
 
Nov. 14, 2019, 3 p.m. 24.0 ppb (22) 10.0 ppb (9) 24.8 ppb (23) 14.0 ppb (13) N/A N/A 21.0 ppb (16) 0.24 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 14, 2019, 2 p.m. 37.0 ppb (34) 16.0 ppb (15) 38.4 ppb (36) 21.0 ppb (19) N/A 1.0 ppb (1) 14.0 ppb (11) 0.33 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 14, 2019, 1 p.m. 66.0 ppb (63) 34.0 ppb (31) 67.6 ppb (64) 32.0 ppb (30) N/A 1.0 ppb (1) 5.0 ppb (4) 0.49 ppb (5) N/A 17.0 μg/m3 (61) 64.0
 
Nov. 14, 2019, noon 71.0 ppb (68) 38.0 ppb (35) 77.2 ppb (75) 34.0 ppb (31) N/A 1.0 ppb (1) 2.0 ppb (2) 0.47 ppb (5) N/A 13.0 μg/m3 (52) 75.0
 
Nov. 14, 2019, 11 a.m. 69.0 ppb (66) 34.0 ppb (31) 72.3 ppb (69) 35.0 ppb (32) N/A 1.0 ppb (1) 2.0 ppb (2) 0.41 ppb (5) N/A 10.0 μg/m3 (42) 69.0
 
Nov. 14, 2019, 10 a.m. 33.0 ppb (31) 7.0 ppb (6) 34.9 ppb (32) 26.0 ppb (24) N/A N/A 7.0 ppb (5) 0.29 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 14, 2019, 9 a.m. 30.0 ppb (28) 7.0 ppb (6) 31.4 ppb (29) 24.0 ppb (22) N/A N/A 9.0 ppb (7) 0.33 ppb (4) N/A 15.0 μg/m3 (56) 56.0
 
Nov. 14, 2019, 8 a.m. 31.0 ppb (29) 9.0 ppb (8) N/A 22.0 ppb (20) N/A N/A 11.0 ppb (8) 0.25 ppb (3) N/A 6.0 μg/m3 (25) 29.0
 
Nov. 14, 2019, 7 a.m. 34.0 ppb (31) 11.0 ppb (10) N/A 23.0 ppb (21) N/A 1.0 ppb (1) 10.0 ppb (8) 0.25 ppb (3) N/A 7.0 μg/m3 (29) 31.0
 
Nov. 14, 2019, 6 a.m. 21.0 ppb (19) 6.0 ppb (6) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 17.0 ppb (13) 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 14, 2019, 5 a.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (18) 0.26 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 14, 2019, 4 a.m. 13.0 ppb (12) 3.0 ppb (3) 13.6 ppb (13) 11.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (18) 0.24 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 14, 2019, 3 a.m. 19.0 ppb (18) 4.0 ppb (4) 20.4 ppb (19) 15.0 ppb (14) N/A 0.0 ppb (0) 19.0 ppb (15) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 14, 2019, 2 a.m. 17.0 ppb (16) 5.0 ppb (5) 18.1 ppb (17) 13.0 ppb (12) N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 14, 2019, 1 a.m. 21.0 ppb (19) 7.0 ppb (6) 21.5 ppb (20) 14.0 ppb (13) N/A 0.0 ppb (0) 20.0 ppb (15) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 14, 2019, midnight 21.0 ppb (19) 7.0 ppb (6) 22.7 ppb (21) 15.0 ppb (14) N/A 1.0 ppb (1) 20.0 ppb (15) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 13, 2019, 11 p.m. 18.0 ppb (17) 5.0 ppb (5) 19.3 ppb (18) 14.0 ppb (13) N/A 0.0 ppb (0) 21.0 ppb (16) 0.22 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 13, 2019, 10 p.m. 14.0 ppb (13) 3.0 ppb (3) 15.9 ppb (15) 11.0 ppb (10) N/A 0.0 ppb (0) 24.0 ppb (18) 0.21 ppb (2) N/A 4.0 μg/m3 (17) 18.0
 
Nov. 13, 2019, 9 p.m. 16.0 ppb (15) 5.0 ppb (5) 17.5 ppb (16) 11.0 ppb (10) N/A 0.0 ppb (0) 25.0 ppb (19) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 19.0
 
Nov. 13, 2019, 8 p.m. 11.0 ppb (10) 4.0 ppb (4) 11.6 ppb (11) 7.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 13, 2019, 7 p.m. 15.0 ppb (14) 6.0 ppb (6) 15.9 ppb (15) 8.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (21) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 13, 2019, 6 p.m. 15.0 ppb (14) 7.0 ppb (6) 16.4 ppb (15) 8.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
Nov. 13, 2019, 5 p.m. 15.0 ppb (14) 7.0 ppb (6) 16.1 ppb (15) 7.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) N/A N/A 21.0
 
Nov. 13, 2019, 4 p.m. 24.0 ppb (22) 12.0 ppb (11) 23.0 ppb (21) 11.0 ppb (10) N/A 0.0 ppb (0) 25.0 ppb (19) 0.17 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 13, 2019, 3 p.m. 18.0 ppb (17) 9.0 ppb (8) 21.1 ppb (20) 9.0 ppb (8) N/A 0.0 ppb (0) 26.0 ppb (20) 0.18 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 13, 2019, 2 p.m. 18.0 ppb (17) 8.0 ppb (7) 18.7 ppb (17) 10.0 ppb (9) N/A 0.0 ppb (0) 26.0 ppb (20) 0.19 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 13, 2019, 1 p.m. 22.0 ppb (20) 9.0 ppb (8) 22.2 ppb (21) 12.0 ppb (11) N/A 0.0 ppb (0) 24.0 ppb (18) 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 13, 2019, noon 29.0 ppb (27) 11.0 ppb (10) 30.7 ppb (28) 18.0 ppb (17) N/A 0.0 ppb (0) 18.0 ppb (14) 0.22 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 13, 2019, 11 a.m. 29.0 ppb (27) 10.0 ppb (9) 30.9 ppb (29) 19.0 ppb (18) N/A 0.0 ppb (0) 17.0 ppb (13) 0.21 ppb (2) N/A 3.0 μg/m3 (12) 29.0
 
Nov. 13, 2019, 10 a.m. 18.0 ppb (17) 6.0 ppb (6) 19.6 ppb (18) 12.0 ppb (11) N/A 0.0 ppb (0) 23.0 ppb (18) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 13, 2019, 9 a.m. 20.0 ppb (19) 7.0 ppb (6) 22.4 ppb (21) 13.0 ppb (12) N/A 0.0 ppb (0) 22.0 ppb (17) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 13, 2019, 8 a.m. 15.0 ppb (14) 5.0 ppb (5) 16.1 ppb (15) 10.0 ppb (9) N/A 0.0 ppb (0) 25.0 ppb (19) 0.14 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 13, 2019, 7 a.m. 12.0 ppb (11) 4.0 ppb (4) 13.6 ppb (13) 8.0 ppb (7) N/A 0.0 ppb (0) 25.0 ppb (19) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 19.0
 
Nov. 13, 2019, 6 a.m. 16.0 ppb (15) 4.0 ppb (4) 18.4 ppb (17) 12.0 ppb (11) N/A 0.0 ppb (0) 24.0 ppb (18) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 13, 2019, 5 a.m. 14.0 ppb (13) 4.0 ppb (4) 16.1 ppb (15) 10.0 ppb (9) N/A 0.0 ppb (0) 25.0 ppb (19) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 13, 2019, 4 a.m. 18.0 ppb (17) 6.0 ppb (6) 19.7 ppb (18) 12.0 ppb (11) N/A 0.0 ppb (0) 24.0 ppb (18) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 18.0
 
Nov. 13, 2019, 3 a.m. 18.0 ppb (17) 6.0 ppb (6) 19.6 ppb (18) 12.0 ppb (11) N/A 0.0 ppb (0) 25.0 ppb (19) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 13, 2019, 2 a.m. 13.0 ppb (12) 4.0 ppb (4) 14.5 ppb (13) 9.0 ppb (8) N/A 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 13, 2019, 1 a.m. 16.0 ppb (15) 5.0 ppb (5) 16.2 ppb (15) 11.0 ppb (10) N/A 0.0 ppb (0) 25.0 ppb (19) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 13, 2019, midnight 17.0 ppb (16) 5.0 ppb (5) 17.3 ppb (16) 12.0 ppb (11) N/A 0.0 ppb (0) 23.0 ppb (18) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
Nov. 12, 2019, 11 p.m. 12.0 ppb (11) 4.0 ppb (4) 11.8 ppb (11) 8.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 21.0
 
Nov. 12, 2019, 10 p.m. 13.0 ppb (12) 4.0 ppb (4) 14.2 ppb (13) 9.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (18) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 12, 2019, 9 p.m. 16.0 ppb (15) 6.0 ppb (6) 16.1 ppb (15) 10.0 ppb (9) N/A 0.0 ppb (0) 22.0 ppb (17) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 12, 2019, 8 p.m. 15.0 ppb (14) 6.0 ppb (6) 15.9 ppb (15) 9.0 ppb (8) N/A 0.0 ppb (0) 19.0 ppb (15) 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0