AQSQID: CC0050109

Site Name: Duncan

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

Reporting: True, Located: True

Current AQI: 28.0

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
Jan. 22, 2019, 10 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 13.0 ppb (10) 0.24 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
Jan. 22, 2019, 9 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 15.0 ppb (12) 0.19 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
Jan. 22, 2019, 8 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 21.0 ppb (16) 0.17 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 22, 2019, 7 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 25.0 ppb (19) 0.15 ppb (2) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 22, 2019, 6 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) 0.15 ppb (2) N/A 4.8 μg/m3 (20) 21.0
 
Jan. 22, 2019, 5 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 25.0 ppb (19) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2019, 4 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) 0.17 ppb (2) N/A 4.1 μg/m3 (17) 23.0
 
Jan. 22, 2019, 3 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) 0.18 ppb (2) N/A 4.5 μg/m3 (19) 24.0
 
Jan. 22, 2019, 2 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) 0.18 ppb (2) N/A 4.3 μg/m3 (18) 24.0
 
Jan. 22, 2019, 1 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 24.0
 
Jan. 22, 2019, midnight N/A N/A N/A 11.0 ppb (10) N/A N/A 29.0 ppb (22) 0.2 ppb (2) N/A 4.1 μg/m3 (17) 22.0
 
Jan. 21, 2019, 11 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) 0.22 ppb (2) N/A 4.4 μg/m3 (18) 21.0
 
Jan. 21, 2019, 10 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) 0.25 ppb (3) N/A 3.9 μg/m3 (16) 22.0
 
Jan. 21, 2019, 9 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 29.0 ppb (22) 0.23 ppb (3) N/A 3.5 μg/m3 (15) 22.0
 
Jan. 21, 2019, 8 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 29.0 ppb (22) 0.22 ppb (2) N/A 3.5 μg/m3 (15) 22.0
 
Jan. 21, 2019, 7 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 29.0 ppb (22) 0.21 ppb (2) N/A 4.1 μg/m3 (17) 22.0
 
Jan. 21, 2019, 6 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) 0.19 ppb (2) N/A 4.5 μg/m3 (19) 22.0
 
Jan. 21, 2019, 5 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) 0.19 ppb (2) N/A 4.7 μg/m3 (20) 23.0
 
Jan. 21, 2019, 4 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 28.0 ppb (22) 0.18 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
Jan. 21, 2019, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 22.0 ppb (17) 0.22 ppb (2) N/A 6.7 μg/m3 (28) 28.0
 
Jan. 21, 2019, 2 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 24.0 ppb (18) 0.22 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Jan. 21, 2019, 1 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 22.0 ppb (17) 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2019, noon N/A N/A N/A 14.0 ppb (13) N/A N/A 21.0 ppb (16) 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 21, 2019, 11 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 22.0 ppb (17) 0.21 ppb (2) N/A 4.6 μg/m3 (19) 19.0
 
Jan. 21, 2019, 10 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 23.0 ppb (18) 0.18 ppb (2) N/A 5.4 μg/m3 (23) 23.0
 
Jan. 21, 2019, 9 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.15 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
Jan. 21, 2019, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
Jan. 21, 2019, 7 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 27.0 ppb (21) 0.16 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
Jan. 21, 2019, 6 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 27.0 ppb (21) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2019, 5 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2019, 4 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
Jan. 21, 2019, 3 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.18 ppb (2) N/A 4.7 μg/m3 (20) 22.0
 
Jan. 21, 2019, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
Jan. 21, 2019, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.18 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
Jan. 21, 2019, midnight N/A N/A N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.18 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
Jan. 20, 2019, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.19 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
Jan. 20, 2019, 10 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.21 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
Jan. 20, 2019, 9 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 25.0 ppb (19) 0.21 ppb (2) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 20, 2019, 8 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 25.0 ppb (19) 0.22 ppb (2) N/A 4.3 μg/m3 (18) 19.0
 
Jan. 20, 2019, 7 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.21 ppb (2) N/A 4.3 μg/m3 (18) 22.0
 
Jan. 20, 2019, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
Jan. 20, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.19 ppb (2) N/A 4.5 μg/m3 (19) 22.0
 
Jan. 20, 2019, 4 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.2 ppb (2) N/A 5.4 μg/m3 (23) 23.0
 
Jan. 20, 2019, 3 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 24.0 ppb (18) 0.2 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
Jan. 20, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.17 ppb (2) N/A 4.1 μg/m3 (17) 22.0
 
Jan. 20, 2019, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.16 ppb (2) N/A 3.7 μg/m3 (15) 22.0
 
Jan. 20, 2019, noon N/A N/A N/A 12.0 ppb (11) N/A N/A 23.0 ppb (18) 0.19 ppb (2) N/A 4.6 μg/m3 (19) 19.0
 
Jan. 20, 2019, 11 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.2 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
Jan. 20, 2019, 10 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.21 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
Jan. 20, 2019, 9 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 21.0 ppb (16) 0.22 ppb (2) N/A 7.8 μg/m3 (32) 32.0
 
Jan. 20, 2019, 8 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.21 ppb (2) N/A 8.3 μg/m3 (35) 35.0
 
Jan. 20, 2019, 7 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) 0.21 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 20, 2019, 6 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.21 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 20, 2019, 5 a.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 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2019, 4 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.2 ppb (2) N/A 7.1 μg/m3 (30) 30.0
 
Jan. 20, 2019, 3 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) 0.19 ppb (2) N/A 6.3 μg/m3 (26) 26.0
 
Jan. 20, 2019, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.19 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
Jan. 20, 2019, 1 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.21 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
Jan. 20, 2019, midnight N/A N/A N/A 9.0 ppb (8) N/A N/A 27.0 ppb (21) 0.22 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
Jan. 19, 2019, 11 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) 0.19 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Jan. 19, 2019, 10 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) 0.23 ppb (3) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 19, 2019, 9 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 27.0 ppb (21) 0.23 ppb (3) N/A 7.2 μg/m3 (30) 30.0
 
Jan. 19, 2019, 8 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 24.0 ppb (18) 0.23 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
Jan. 19, 2019, 7 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) 0.23 ppb (3) N/A 11.1 μg/m3 (46) 46.0
 
Jan. 19, 2019, 6 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) 0.22 ppb (2) N/A 8.8 μg/m3 (37) 37.0
 
Jan. 19, 2019, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.22 ppb (2) N/A 8.8 μg/m3 (37) 37.0
 
Jan. 19, 2019, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.21 ppb (2) N/A 6.3 μg/m3 (26) 26.0
 
Jan. 19, 2019, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.19 ppb (2) N/A 6.1 μg/m3 (25) 25.0
 
Jan. 19, 2019, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.17 ppb (2) N/A 4.4 μg/m3 (18) 23.0
 
Jan. 19, 2019, 1 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) 0.17 ppb (2) N/A 4.1 μg/m3 (17) 22.0
 
Jan. 19, 2019, noon N/A N/A N/A 12.0 ppb (11) N/A N/A 25.0 ppb (19) 0.16 ppb (2) N/A 3.9 μg/m3 (16) 19.0
 
Jan. 19, 2019, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.15 ppb (2) N/A 2.8 μg/m3 (12) 23.0
 
Jan. 19, 2019, 10 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.15 ppb (2) N/A 1.9 μg/m3 (8) 23.0
 
Jan. 19, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.16 ppb (2) N/A 2.2 μg/m3 (9) 23.0
 
Jan. 19, 2019, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 31.0 ppb (24) 0.15 ppb (2) N/A 2.4 μg/m3 (10) 24.0
 
Jan. 19, 2019, 7 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) 0.15 ppb (2) N/A 2.5 μg/m3 (10) 25.0
 
Jan. 19, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) 0.17 ppb (2) N/A 3.5 μg/m3 (15) 26.0
 
Jan. 19, 2019, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 32.0 ppb (25) 0.19 ppb (2) N/A 4.1 μg/m3 (17) 25.0
 
Jan. 19, 2019, 4 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 27.0 ppb (21) 0.24 ppb (3) N/A 7.8 μg/m3 (32) 32.0
 
Jan. 19, 2019, 3 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 17.0 ppb (13) 0.32 ppb (4) N/A 16.3 μg/m3 (59) 59.0
 
Jan. 19, 2019, 2 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 14.0 ppb (11) 0.37 ppb (4) N/A 29.6 μg/m3 (87) 87.0
 
Jan. 19, 2019, 1 a.m. N/A N/A N/A 29.0 ppb (27) N/A N/A 5.0 ppb (4) 0.46 ppb (5) N/A 31.5 μg/m3 (91) 91.0
 
Jan. 19, 2019, midnight N/A N/A N/A 34.0 ppb (31) N/A N/A 3.0 ppb (2) 0.53 ppb (6) N/A 31.6 μg/m3 (92) 92.0
 
Jan. 18, 2019, 11 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 5.0 ppb (4) 0.47 ppb (5) N/A 29.8 μg/m3 (88) 88.0
 
Jan. 18, 2019, 10 p.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 3.0 ppb (2) 0.51 ppb (6) N/A 29.1 μg/m3 (86) 86.0
 
Jan. 18, 2019, 9 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 6.0 ppb (5) 0.47 ppb (5) N/A 27.5 μg/m3 (83) 83.0
 
Jan. 18, 2019, 8 p.m. N/A N/A N/A 38.0 ppb (35) N/A N/A 5.0 ppb (4) 0.56 ppb (6) N/A 34.6 μg/m3 (98) 98.0
 
Jan. 18, 2019, 7 p.m. N/A N/A N/A 39.0 ppb (36) N/A N/A 4.0 ppb (3) 0.6 ppb (7) N/A 37.2 μg/m3 (104) 104.0
 
Jan. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.58 ppb (6) N/A 34.7 μg/m3 (98) 98.0
 
Jan. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.62 ppb (7) N/A 35.3 μg/m3 (100) 100.0
 
Jan. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.55 ppb (6) N/A 32.4 μg/m3 (93) 93.0
 
Jan. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.47 ppb (5) N/A 27.9 μg/m3 (84) 84.0
 
Jan. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.46 ppb (5) N/A 24.4 μg/m3 (76) 76.0
 
Jan. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.44 ppb (5) N/A 19.9 μg/m3 (67) 67.0
 
Jan. 18, 2019, noon N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.36 ppb (4) N/A 16.7 μg/m3 (60) 60.0
 
Jan. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.3 ppb (3) N/A 18.5 μg/m3 (64) 64.0
 
Jan. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.32 ppb (4) N/A 23.8 μg/m3 (75) 75.0
 
Jan. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.32 ppb (4) N/A 21.1 μg/m3 (69) 69.0
 
Jan. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.31 ppb (3) N/A 17.6 μg/m3 (62) 62.0
 
Jan. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.24 ppb (3) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.26 ppb (3) N/A 16.6 μg/m3 (60) 60.0
 
Jan. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.22 ppb (2) N/A 10.1 μg/m3 (42) 42.0
 
Jan. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.23 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
Jan. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.27 ppb (3) N/A 11.5 μg/m3 (48) 48.0
 
Jan. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.29 ppb (3) N/A 13.1 μg/m3 (52) 52.0
 
Jan. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.4 ppb (4) N/A 18.3 μg/m3 (63) 63.0
 
Jan. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.38 ppb (4) N/A 13.8 μg/m3 (54) 54.0
 
Jan. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.39 ppb (4) N/A 13.4 μg/m3 (53) 53.0
 
Jan. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.39 ppb (4) N/A 14.7 μg/m3 (56) 56.0
 
Jan. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.41 ppb (5) N/A 20.4 μg/m3 (68) 68.0
 
Jan. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.39 ppb (4) N/A 19.5 μg/m3 (66) 66.0
 
Jan. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.35 ppb (4) N/A 19.7 μg/m3 (66) 66.0
 
Jan. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.29 ppb (3) N/A 16.1 μg/m3 (59) 59.0
 
Jan. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.31 ppb (3) N/A 18.4 μg/m3 (64) 64.0
 
Jan. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.3 ppb (3) N/A 23.0 μg/m3 (73) 73.0
 
Jan. 17, 2019, 3 p.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 17.0 ppb (13) 0.31 ppb (3) N/A 17.1 μg/m3 (61) 61.0
 
Jan. 17, 2019, 2 p.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 18.0 ppb (14) 0.31 ppb (3) N/A 14.2 μg/m3 (55) 55.0
 
Jan. 17, 2019, 1 p.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 16.0 ppb (12) 0.34 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
Jan. 17, 2019, noon N/A N/A N/A 29.0 ppb (27) N/A N/A 13.0 ppb (10) 0.33 ppb (4) N/A 9.7 μg/m3 (40) 40.0
 
Jan. 17, 2019, 11 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 15.0 ppb (12) 0.28 ppb (3) N/A 11.3 μg/m3 (47) 47.0
 
Jan. 17, 2019, 10 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A 19.0 ppb (15) 0.24 ppb (3) N/A 12.8 μg/m3 (52) 52.0
 
Jan. 17, 2019, 9 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 28.0 ppb (22) 0.15 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 17, 2019, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 23.0
 
Jan. 17, 2019, 7 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) 0.16 ppb (2) N/A 5.1 μg/m3 (21) 24.0
 
Jan. 17, 2019, 6 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) 0.15 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
Jan. 17, 2019, 5 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) 0.16 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
Jan. 17, 2019, 4 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) 0.18 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 17, 2019, 3 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) 0.18 ppb (2) N/A 7.5 μg/m3 (31) 31.0
 
Jan. 17, 2019, 2 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) 0.2 ppb (2) N/A 8.4 μg/m3 (35) 35.0
 
Jan. 17, 2019, 1 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) 0.2 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
Jan. 17, 2019, midnight N/A N/A N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) 0.2 ppb (2) N/A 11.9 μg/m3 (50) 50.0
 
Jan. 16, 2019, 11 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) 0.23 ppb (3) N/A 12.7 μg/m3 (51) 51.0
 
Jan. 16, 2019, 10 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) 0.21 ppb (2) N/A 11.7 μg/m3 (49) 49.0
 
Jan. 16, 2019, 9 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) 0.21 ppb (2) N/A 9.9 μg/m3 (41) 41.0
 
Jan. 16, 2019, 8 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 28.0 ppb (22) 0.2 ppb (2) N/A 3.8 μg/m3 (16) 22.0
 
Jan. 16, 2019, 7 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.22 ppb (2) N/A 2.1 μg/m3 (9) 18.0
 
Jan. 16, 2019, 6 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.21 ppb (2) N/A 2.3 μg/m3 (10) 16.0
 
Jan. 16, 2019, 5 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) 0.23 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 16, 2019, 4 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 17.0 ppb (13) 0.25 ppb (3) N/A 7.7 μg/m3 (32) 32.0
 
Jan. 16, 2019, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 16.0 ppb (12) 0.26 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2019, 2 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 16.0 ppb (12) 0.26 ppb (3) N/A 7.3 μg/m3 (30) 30.0
 
Jan. 16, 2019, 1 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 16.0 ppb (12) 0.25 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
Jan. 16, 2019, noon N/A N/A N/A 23.0 ppb (21) N/A N/A 15.0 ppb (12) 0.27 ppb (3) N/A 13.2 μg/m3 (53) 53.0
 
Jan. 16, 2019, 11 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 19.0 ppb (15) 0.26 ppb (3) N/A 19.0 μg/m3 (65) 65.0
 
Jan. 16, 2019, 10 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 22.0 ppb (17) 0.23 ppb (3) N/A 23.2 μg/m3 (74) 74.0
 
Jan. 16, 2019, 9 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.19 ppb (2) N/A 23.9 μg/m3 (75) 75.0
 
Jan. 16, 2019, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.19 ppb (2) N/A 17.3 μg/m3 (61) 61.0
 
Jan. 16, 2019, 7 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) 0.18 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2019, 6 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.2 ppb (2) N/A 11.7 μg/m3 (49) 49.0
 
Jan. 16, 2019, 5 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 18.0 ppb (14) 0.23 ppb (3) N/A 15.1 μg/m3 (57) 57.0
 
Jan. 16, 2019, 4 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 16.0 ppb (12) 0.25 ppb (3) N/A 15.6 μg/m3 (58) 58.0
 
Jan. 16, 2019, 3 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 15.0 ppb (12) 0.29 ppb (3) N/A 14.2 μg/m3 (55) 55.0
 
Jan. 16, 2019, 2 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 18.0 ppb (14) 0.26 ppb (3) N/A 13.6 μg/m3 (53) 53.0
 
Jan. 16, 2019, 1 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 19.0 ppb (15) 0.27 ppb (3) N/A 14.8 μg/m3 (56) 56.0
 
Jan. 16, 2019, midnight N/A N/A N/A 16.0 ppb (15) N/A N/A 15.0 ppb (12) 0.29 ppb (3) N/A 18.7 μg/m3 (64) 64.0
 
Jan. 15, 2019, 11 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 11.0 ppb (8) 0.38 ppb (4) N/A 33.4 μg/m3 (96) 96.0
 
Jan. 15, 2019, 10 p.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 8.0 ppb (6) 0.34 ppb (4) N/A 30.0 μg/m3 (88) 88.0
 
Jan. 15, 2019, 9 p.m. N/A N/A N/A 31.0 ppb (29) N/A N/A 4.0 ppb (3) 0.4 ppb (4) N/A 27.3 μg/m3 (83) 83.0
 
Jan. 15, 2019, 8 p.m. N/A N/A N/A 31.0 ppb (29) N/A N/A 6.0 ppb (5) N/A N/A 21.9 μg/m3 (71) 71.0
 
Jan. 15, 2019, 7 p.m. N/A N/A N/A 32.0 ppb (30) N/A N/A 7.0 ppb (5) N/A N/A 19.7 μg/m3 (66) 66.0
 
Jan. 15, 2019, 6 p.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 6.0 ppb (5) N/A N/A 22.1 μg/m3 (71) 71.0
 
Jan. 15, 2019, 5 p.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 6.0 ppb (5) N/A N/A 23.1 μg/m3 (74) 74.0
 
Jan. 15, 2019, 4 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A N/A 0.39 ppb (4) N/A 21.4 μg/m3 (70) 70.0
 
Jan. 15, 2019, 3 p.m. N/A N/A N/A 25.0 ppb (23) N/A N/A N/A 0.35 ppb (4) N/A 20.0 μg/m3 (67) 67.0
 
Jan. 15, 2019, 2 p.m. N/A N/A N/A 32.0 ppb (30) N/A N/A N/A 0.41 ppb (5) N/A 22.8 μg/m3 (73) 73.0
 
Jan. 15, 2019, 1 p.m. N/A N/A N/A 31.0 ppb (29) N/A N/A N/A 0.43 ppb (5) N/A 22.4 μg/m3 (72) 72.0
 
Jan. 15, 2019, noon N/A N/A N/A 31.0 ppb (29) N/A N/A N/A 0.44 ppb (5) N/A 20.2 μg/m3 (67) 67.0
 
Jan. 15, 2019, 11 a.m. N/A N/A N/A 30.0 ppb (28) N/A N/A N/A 0.38 ppb (4) N/A 18.9 μg/m3 (65) 65.0