AQSQID: CC0050109

Site Name: Duncan

Location: Mont-Royal (Duncan Rd), N/A

Reporting: True, Located: True

Current AQI: 26.0

Mont-Royal (Duncan Rd) N/A, CA: 45.502648, -73.663913

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 17, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) 0.18 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) 0.17 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
Sept. 17, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 20.0 ppb (15) 0.17 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
Sept. 17, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 19.0 ppb (15) 0.17 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
Sept. 17, 2019, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 15.0 ppb (12) 0.19 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 12.0 ppb (9) 0.2 ppb (2) N/A 4.1 μg/m3 (17) 17.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 12.0 ppb (9) 0.22 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Sept. 17, 2019, noon N/A N/A N/A 11.0 ppb (10) N/A N/A 8.0 ppb (6) 0.25 ppb (3) N/A 5.4 μg/m3 (23) 23.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 4.0 ppb (3) 0.26 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 2.0 ppb (2) 0.24 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
Sept. 17, 2019, 9 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 3.0 ppb (2) 0.22 ppb (2) N/A 9.2 μg/m3 (38) 38.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 1.0 ppb (1) 0.23 ppb (3) N/A 11.3 μg/m3 (47) 47.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 1.0 ppb (1) 0.24 ppb (3) N/A 10.6 μg/m3 (44) 44.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 1.0 ppb (1) 0.25 ppb (3) N/A 10.2 μg/m3 (42) 42.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 5.0 ppb (4) 0.24 ppb (3) N/A 8.1 μg/m3 (34) 34.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 5.0 ppb (4) 0.3 ppb (3) N/A 8.2 μg/m3 (34) 34.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 8.0 ppb (6) 0.25 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 14.0 ppb (11) 0.3 ppb (3) N/A 5.7 μg/m3 (24) 24.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 14.0 ppb (11) 0.3 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
Sept. 17, 2019, midnight N/A N/A N/A 14.0 ppb (13) N/A N/A 15.0 ppb (12) 0.28 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) 0.26 ppb (3) N/A 5.1 μg/m3 (21) 21.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 21.0 ppb (16) 0.26 ppb (3) N/A 4.6 μg/m3 (19) 19.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) 0.22 ppb (2) N/A 3.6 μg/m3 (15) 18.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) 0.26 ppb (3) N/A 4.8 μg/m3 (20) 20.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.24 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 24.0 ppb (18) 0.24 ppb (3) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 19.0 ppb (15) 0.23 ppb (3) N/A 4.6 μg/m3 (19) 19.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) 0.23 ppb (3) N/A 3.8 μg/m3 (16) 16.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) 0.21 ppb (2) N/A 3.7 μg/m3 (15) 15.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 14.0 ppb (11) 0.24 ppb (3) N/A 4.3 μg/m3 (18) 18.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 10.0 ppb (8) 0.26 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
Sept. 16, 2019, noon N/A N/A N/A 13.0 ppb (12) N/A N/A 8.0 ppb (6) 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 6.0 ppb (5) 0.29 ppb (3) N/A 5.5 μg/m3 (23) 23.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 5.0 ppb (4) 0.29 ppb (3) N/A 8.2 μg/m3 (34) 34.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 10.0 ppb (8) 0.21 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 17.0 ppb (13) 0.14 ppb (2) N/A 2.4 μg/m3 (10) 13.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) 0.13 ppb (1) N/A 2.1 μg/m3 (9) 14.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 15.0 ppb (12) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 12.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) 0.16 ppb (2) N/A 1.7 μg/m3 (7) 13.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.15 ppb (2) N/A 1.3 μg/m3 (5) 16.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 17.0 ppb (13) 0.21 ppb (2) N/A 1.6 μg/m3 (7) 13.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.21 ppb (2) N/A 1.9 μg/m3 (8) 14.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.2 ppb (2) N/A 1.8 μg/m3 (8) 13.0
 
Sept. 16, 2019, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A 16.0 ppb (12) 0.21 ppb (2) N/A 1.9 μg/m3 (8) 12.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.22 ppb (2) N/A 1.6 μg/m3 (7) 13.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 18.0 ppb (14) 0.21 ppb (2) N/A 1.5 μg/m3 (6) 14.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 19.0 ppb (15) 0.22 ppb (2) N/A 1.4 μg/m3 (6) 15.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.22 ppb (2) N/A 1.4 μg/m3 (6) 15.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.21 ppb (2) N/A 1.4 μg/m3 (6) 16.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.2 ppb (2) N/A 1.4 μg/m3 (6) 16.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.2 ppb (2) N/A 1.2 μg/m3 (5) 16.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 19.0 ppb (15) 0.2 ppb (2) N/A 1.0 μg/m3 (4) 15.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.22 ppb (2) N/A 1.0 μg/m3 (4) 15.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.2 ppb (2) N/A 1.1 μg/m3 (5) 17.0
 
Sept. 15, 2019, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) 0.19 ppb (2) N/A 1.2 μg/m3 (5) 18.0
 
Sept. 15, 2019, noon N/A N/A N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.18 ppb (2) N/A 1.6 μg/m3 (7) 16.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 21.0 ppb (16) 0.18 ppb (2) N/A 2.3 μg/m3 (10) 16.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) 0.17 ppb (2) N/A 2.5 μg/m3 (10) 18.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 21.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.14 ppb (2) N/A 1.9 μg/m3 (8) 22.0
 
Sept. 15, 2019, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 29.0 ppb (22) 0.15 ppb (2) N/A 1.9 μg/m3 (8) 22.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.14 ppb (2) N/A 1.9 μg/m3 (8) 24.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.18 ppb (2) N/A 2.1 μg/m3 (9) 22.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.17 ppb (2) N/A 2.1 μg/m3 (9) 22.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.21 ppb (2) N/A 2.2 μg/m3 (9) 20.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.18 ppb (2) N/A 1.9 μg/m3 (8) 20.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.18 ppb (2) N/A 2.4 μg/m3 (10) 22.0
 
Sept. 15, 2019, midnight N/A N/A N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.24 ppb (3) N/A 4.6 μg/m3 (19) 19.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 22.0 ppb (17) 0.25 ppb (3) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 14, 2019, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) 0.24 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
Sept. 14, 2019, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.22 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.18 ppb (2) N/A 5.5 μg/m3 (23) 28.0
 
Sept. 14, 2019, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.21 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
Sept. 14, 2019, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 25.0 ppb (19) 0.21 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.22 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
Sept. 14, 2019, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.21 ppb (2) N/A 4.6 μg/m3 (19) 19.0
 
Sept. 14, 2019, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.22 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 20.0 ppb (15) 0.18 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
Sept. 14, 2019, noon N/A N/A N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 16.0
 
Sept. 14, 2019, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.17 ppb (2) N/A 2.8 μg/m3 (12) 16.0
 
Sept. 14, 2019, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) 0.16 ppb (2) N/A 3.2 μg/m3 (13) 18.0
 
Sept. 14, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.15 ppb (2) N/A 3.7 μg/m3 (15) 20.0
 
Sept. 14, 2019, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.16 ppb (2) N/A 3.3 μg/m3 (14) 23.0
 
Sept. 14, 2019, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.16 ppb (2) N/A 4.2 μg/m3 (18) 24.0
 
Sept. 14, 2019, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 24.0
 
Sept. 14, 2019, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.18 ppb (2) N/A 4.4 μg/m3 (18) 23.0
 
Sept. 14, 2019, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.19 ppb (2) N/A 4.1 μg/m3 (17) 21.0
 
Sept. 14, 2019, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) 0.21 ppb (2) N/A 6.1 μg/m3 (25) 25.0
 
Sept. 14, 2019, 1 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) 0.2 ppb (2) N/A 7.8 μg/m3 (32) 32.0
 
Sept. 12, 2019, 11 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 6.0 ppb (5) 0.19 ppb (2) N/A 2.7 μg/m3 (11) 11.0
 
Sept. 12, 2019, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 3.0 ppb (2) 0.2 ppb (2) N/A 3.1 μg/m3 (13) 13.0
 
Sept. 12, 2019, 9 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 6.0 ppb (5) 0.16 ppb (2) N/A 2.1 μg/m3 (9) 9.0
 
Sept. 12, 2019, 8 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 10.0 ppb (8) 0.14 ppb (2) N/A 1.7 μg/m3 (7) 8.0
 
Sept. 12, 2019, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 15.0 ppb (12) 0.14 ppb (2) N/A 1.4 μg/m3 (6) 12.0
 
Sept. 12, 2019, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 15.0 ppb (12) 0.14 ppb (2) N/A 1.4 μg/m3 (6) 12.0
 
Sept. 12, 2019, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 16.0 ppb (12) 0.13 ppb (1) N/A 1.1 μg/m3 (5) 12.0
 
Sept. 12, 2019, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 16.0 ppb (12) 0.14 ppb (2) N/A 0.9 μg/m3 (4) 12.0
 
Sept. 12, 2019, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 16.0 ppb (12) 0.14 ppb (2) N/A 1.0 μg/m3 (4) 12.0
 
Sept. 12, 2019, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 18.0 ppb (14) 0.13 ppb (1) N/A 0.9 μg/m3 (4) 14.0
 
Sept. 12, 2019, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.15 ppb (2) N/A 1.6 μg/m3 (7) 13.0
 
Sept. 12, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) 0.18 ppb (2) N/A 1.9 μg/m3 (8) 11.0
 
Sept. 11, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 11.0 ppb (8) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 11, 2019, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.21 ppb (2) N/A 2.4 μg/m3 (10) 12.0
 
Sept. 11, 2019, 9 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) 0.24 ppb (3) N/A 3.3 μg/m3 (14) 15.0
 
Sept. 11, 2019, 8 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) 0.31 ppb (3) N/A 10.8 μg/m3 (45) 45.0
 
Sept. 11, 2019, 7 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.28 ppb (3) N/A 9.9 μg/m3 (41) 41.0
 
Sept. 11, 2019, 6 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 25.0 ppb (19) 0.28 ppb (3) N/A 11.6 μg/m3 (48) 48.0
 
Sept. 11, 2019, 5 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 25.0 ppb (19) 0.25 ppb (3) N/A 13.3 μg/m3 (53) 53.0
 
Sept. 11, 2019, 4 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) 0.25 ppb (3) N/A 13.6 μg/m3 (53) 53.0
 
Sept. 11, 2019, 3 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 20.0 ppb (15) 0.26 ppb (3) N/A 13.6 μg/m3 (53) 53.0
 
Sept. 11, 2019, 2 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 18.0 ppb (14) 0.27 ppb (3) N/A 10.1 μg/m3 (42) 42.0
 
Sept. 11, 2019, 1 p.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 11.0 ppb (8) 0.34 ppb (4) N/A 14.2 μg/m3 (55) 55.0
 
Sept. 11, 2019, noon N/A N/A N/A 23.0 ppb (21) N/A N/A 2.0 ppb (2) 0.53 ppb (6) N/A 15.6 μg/m3 (58) 58.0
 
Sept. 11, 2019, 11 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) 0.55 ppb (6) N/A 18.6 μg/m3 (64) 64.0
 
Sept. 11, 2019, 10 a.m. N/A N/A N/A 22.0 ppb (20) N/A N/A 0.0 ppb (0) 0.61 ppb (7) N/A 21.4 μg/m3 (70) 70.0
 
Sept. 11, 2019, 9 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 0.0 ppb (0) 0.42 ppb (5) N/A 20.5 μg/m3 (68) 68.0
 
Sept. 11, 2019, 8 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) 0.29 ppb (3) N/A 20.9 μg/m3 (69) 69.0
 
Sept. 11, 2019, 7 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) 0.27 ppb (3) N/A 24.4 μg/m3 (76) 76.0
 
Sept. 11, 2019, 6 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) 0.26 ppb (3) N/A 24.8 μg/m3 (77) 77.0
 
Sept. 11, 2019, 5 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 1.0 ppb (1) 0.26 ppb (3) N/A 16.9 μg/m3 (60) 60.0
 
Sept. 11, 2019, 4 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 1.0 ppb (1) 0.33 ppb (4) N/A 15.5 μg/m3 (57) 57.0
 
Sept. 11, 2019, 3 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) 0.32 ppb (4) N/A 18.7 μg/m3 (64) 64.0
 
Sept. 11, 2019, 2 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 2.0 ppb (2) 0.32 ppb (4) N/A 23.8 μg/m3 (75) 75.0
 
Sept. 11, 2019, 1 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 6.0 ppb (5) 0.22 ppb (2) N/A 14.6 μg/m3 (56) 56.0
 
Sept. 11, 2019, midnight N/A N/A N/A 12.0 ppb (11) N/A N/A 6.0 ppb (5) 0.25 ppb (3) N/A 10.2 μg/m3 (42) 42.0
 
Sept. 10, 2019, 11 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 4.0 ppb (3) 0.32 ppb (4) N/A 8.2 μg/m3 (34) 34.0
 
Sept. 10, 2019, 10 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 9.0 ppb (7) 0.32 ppb (4) N/A 6.2 μg/m3 (26) 26.0
 
Sept. 10, 2019, 9 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 15.0 ppb (12) 0.25 ppb (3) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 10, 2019, 8 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) 0.24 ppb (3) N/A 4.6 μg/m3 (19) 19.0
 
Sept. 10, 2019, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.18 ppb (2) N/A 2.7 μg/m3 (11) 17.0
 
Sept. 10, 2019, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) 0.18 ppb (2) N/A 3.4 μg/m3 (14) 16.0
 
Sept. 10, 2019, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 21.0 ppb (16) 0.17 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
Sept. 10, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) 0.18 ppb (2) N/A 6.4 μg/m3 (27) 27.0
 
Sept. 10, 2019, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) 0.18 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
Sept. 10, 2019, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 16.0 ppb (12) 0.18 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Sept. 10, 2019, 1 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 9.0 ppb (7) 0.24 ppb (3) N/A 8.5 μg/m3 (35) 35.0
 
Sept. 10, 2019, noon N/A N/A N/A 13.0 ppb (12) N/A N/A 8.0 ppb (6) 0.26 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
Sept. 10, 2019, 11 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 2.0 ppb (2) 0.36 ppb (4) N/A 14.6 μg/m3 (56) 56.0
 
Sept. 10, 2019, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 1.0 ppb (1) 0.3 ppb (3) N/A 14.9 μg/m3 (56) 56.0
 
Sept. 10, 2019, 9 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) 0.32 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
Sept. 10, 2019, 8 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 1.0 ppb (1) 0.29 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 10, 2019, 7 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 7.0 ppb (5) 0.21 ppb (2) N/A 12.2 μg/m3 (50) 50.0
 
Sept. 10, 2019, 6 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 10.0 ppb (8) 0.21 ppb (2) N/A 15.6 μg/m3 (58) 58.0
 
Sept. 10, 2019, 5 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 5.0 ppb (4) 0.24 ppb (3) N/A 14.6 μg/m3 (56) 56.0
 
Sept. 10, 2019, 4 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.43 ppb (5) N/A 12.3 μg/m3 (51) 51.0
 
Sept. 10, 2019, 3 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 1.0 ppb (1) 0.47 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 10, 2019, 2 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.46 ppb (5) N/A 14.8 μg/m3 (56) 56.0
 
Sept. 10, 2019, 1 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) 0.5 ppb (6) N/A 14.6 μg/m3 (56) 56.0
 
Sept. 10, 2019, midnight N/A N/A N/A 22.0 ppb (20) N/A N/A 3.0 ppb (2) 0.55 ppb (6) N/A 15.5 μg/m3 (57) 57.0
 
Sept. 9, 2019, 11 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 7.0 ppb (5) 0.48 ppb (5) N/A 12.2 μg/m3 (50) 50.0
 
Sept. 9, 2019, 10 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 16.0 ppb (12) 0.31 ppb (3) N/A 7.8 μg/m3 (32) 32.0
 
Sept. 9, 2019, 9 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.28 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 9, 2019, 8 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) 0.31 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 9, 2019, 7 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) 0.28 ppb (3) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 9, 2019, 6 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 16.0 ppb (12) 0.31 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
Sept. 9, 2019, 5 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 11.0 ppb (8) 0.3 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 9, 2019, 4 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 12.0 ppb (9) 0.27 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
Sept. 9, 2019, 3 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 12.0 ppb (9) 0.57 ppb (6) N/A 6.5 μg/m3 (27) 27.0
 
Sept. 9, 2019, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 14.0 ppb (11) 0.19 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
Sept. 9, 2019, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 10.0 ppb (8) 0.22 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 9, 2019, noon N/A N/A N/A 11.0 ppb (10) N/A N/A 4.0 ppb (3) 0.32 ppb (4) N/A 3.7 μg/m3 (15) 15.0
 
Sept. 9, 2019, 11 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 2.0 ppb (2) 0.31 ppb (3) N/A 3.4 μg/m3 (14) 14.0
 
Sept. 9, 2019, 10 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 2.0 ppb (2) 0.25 ppb (3) N/A 3.4 μg/m3 (14) 14.0
 
Sept. 9, 2019, 9 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 4.0 ppb (3) 0.2 ppb (2) N/A 1.5 μg/m3 (6) 6.0
 
Sept. 9, 2019, 8 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 4.0 ppb (3) 0.16 ppb (2) N/A 1.1 μg/m3 (5) 6.0
 
Sept. 9, 2019, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 6.0 ppb (5) 0.15 ppb (2) N/A 0.9 μg/m3 (4) 6.0