ID: 2730

AQSQID: CC0050109

Site Name: Duncan

Added: April 21, 2020, 6:24 p.m.

Updated: Aug. 1, 2021, 2:55 a.m.

Location: Mont-Royal (Cosmos-Area), N/A

Reporting: True, Located: True

Current AQI: 23.0

Mont-Royal (Cosmos-Area) N/A, CA: 45.502648, -73.663913

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Aug. 1, 2021, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 17.0 ppb (16) 0.24 ppb (3) N/A 5.3 μg/m3 (23) 23.0
 
Aug. 1, 2021, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A 19.0 ppb (18) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
July 31, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 22.0 ppb (21) 0.2 ppb (3) N/A 4.3 μg/m3 (18) 21.0
 
July 31, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 24.0 ppb (23) 0.16 ppb (3) N/A 3.9 μg/m3 (17) 23.0
 
July 31, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 25.0 ppb (24) 0.17 ppb (3) N/A 3.9 μg/m3 (17) 24.0
 
July 31, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) 0.18 ppb (3) N/A 3.9 μg/m3 (17) 25.0
 
July 31, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) 0.17 ppb (3) N/A 4.1 μg/m3 (18) 25.0
 
July 31, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.17 ppb (3) N/A 4.1 μg/m3 (18) 24.0
 
July 31, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.18 ppb (3) N/A 3.9 μg/m3 (17) 24.0
 
July 31, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 25.0 ppb (24) 0.17 ppb (3) N/A 3.6 μg/m3 (16) 24.0
 
July 31, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) 0.17 ppb (3) N/A 3.3 μg/m3 (14) 25.0
 
July 31, 2021, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 25.0 ppb (24) 0.18 ppb (3) N/A 3.1 μg/m3 (13) 24.0
 
July 31, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 19.0 ppb (18) 0.19 ppb (3) N/A 3.8 μg/m3 (16) 18.0
 
July 31, 2021, noon N/A N/A N/A 4.0 ppb (4) N/A N/A 12.0 ppb (12) 0.2 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
July 31, 2021, 11 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 10.0 ppb (10) 0.18 ppb (3) N/A 6.1 μg/m3 (26) 26.0
 
July 31, 2021, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 12.0 ppb (12) 0.13 ppb (2) N/A 6.4 μg/m3 (27) 27.0
 
July 31, 2021, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 14.0 ppb (13) 0.11 ppb (2) N/A 6.7 μg/m3 (28) 28.0
 
July 31, 2021, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 14.0 ppb (13) 0.1 ppb (2) N/A 5.6 μg/m3 (24) 24.0
 
July 31, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 18.0 ppb (17) 0.11 ppb (2) N/A 3.8 μg/m3 (16) 17.0
 
July 31, 2021, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) 0.11 ppb (2) N/A 3.6 μg/m3 (16) 18.0
 
July 31, 2021, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) 0.12 ppb (2) N/A 3.5 μg/m3 (15) 18.0
 
July 31, 2021, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) 0.12 ppb (2) N/A 3.5 μg/m3 (15) 18.0
 
July 31, 2021, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) 0.13 ppb (2) N/A 3.4 μg/m3 (15) 18.0
 
July 31, 2021, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) 0.15 ppb (2) N/A 3.6 μg/m3 (16) 18.0
 
July 31, 2021, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 19.0 ppb (18) 0.16 ppb (3) N/A 3.6 μg/m3 (16) 18.0
 
July 31, 2021, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A 19.0 ppb (18) 0.16 ppb (3) N/A 3.6 μg/m3 (16) 18.0
 
July 30, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 19.0 ppb (18) 0.15 ppb (2) N/A 3.9 μg/m3 (17) 18.0
 
July 30, 2021, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 17.0 ppb (16) 0.17 ppb (3) N/A 3.2 μg/m3 (14) 16.0
 
July 30, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 16.0 ppb (15) 0.19 ppb (3) N/A 3.6 μg/m3 (16) 16.0
 
July 30, 2021, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 19.0 ppb (18) 0.14 ppb (2) N/A 3.3 μg/m3 (14) 18.0
 
July 30, 2021, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 17.0 ppb (16) 0.16 ppb (3) N/A 2.9 μg/m3 (13) 16.0
 
July 30, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 18.0 ppb (17) 0.15 ppb (2) N/A 2.9 μg/m3 (13) 17.0
 
July 30, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 18.0 ppb (17) 0.15 ppb (2) N/A 2.9 μg/m3 (13) 17.0
 
July 30, 2021, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 20.0 ppb (19) 0.17 ppb (3) N/A 2.5 μg/m3 (11) 19.0
 
July 30, 2021, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 22.0 ppb (21) 0.2 ppb (3) N/A 1.9 μg/m3 (8) 21.0
 
July 30, 2021, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 19.0 ppb (18) 0.18 ppb (3) N/A 2.2 μg/m3 (10) 18.0
 
July 30, 2021, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 18.0 ppb (17) 0.21 ppb (3) N/A 4.1 μg/m3 (18) 18.0
 
July 30, 2021, noon N/A N/A N/A 6.0 ppb (6) N/A N/A 18.0 ppb (17) 0.21 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
July 30, 2021, 11 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A 13.0 ppb (13) 0.22 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
July 30, 2021, 10 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 12.0 ppb (12) 0.2 ppb (3) N/A 13.2 μg/m3 (54) 54.0
 
July 30, 2021, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 10.0 ppb (10) 0.18 ppb (3) N/A 11.2 μg/m3 (47) 47.0
 
July 30, 2021, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 9.0 ppb (9) 0.16 ppb (3) N/A 9.2 μg/m3 (39) 39.0
 
July 30, 2021, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 7.0 ppb (7) 0.19 ppb (3) N/A 12.1 μg/m3 (51) 51.0
 
July 30, 2021, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 7.0 ppb (7) 0.2 ppb (3) N/A 12.8 μg/m3 (53) 53.0
 
July 30, 2021, 5 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 6.0 ppb (6) 0.21 ppb (3) N/A 13.7 μg/m3 (55) 55.0
 
July 30, 2021, 4 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 6.0 ppb (6) 0.22 ppb (3) N/A 15.6 μg/m3 (59) 59.0
 
July 30, 2021, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 9.0 ppb (9) 0.19 ppb (3) N/A 9.9 μg/m3 (42) 42.0
 
July 30, 2021, 2 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 9.0 ppb (9) 0.18 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
July 30, 2021, 1 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 11.0 ppb (11) 0.21 ppb (3) N/A 5.3 μg/m3 (23) 23.0
 
July 30, 2021, midnight N/A N/A N/A 7.0 ppb (7) N/A N/A 13.0 ppb (13) 0.22 ppb (3) N/A 7.1 μg/m3 (30) 30.0
 
July 29, 2021, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) 0.18 ppb (3) N/A 8.2 μg/m3 (35) 35.0
 
July 29, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) 0.18 ppb (3) N/A 7.5 μg/m3 (32) 32.0
 
July 29, 2021, 9 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 15.0 ppb (14) 0.18 ppb (3) N/A 5.6 μg/m3 (24) 24.0
 
July 29, 2021, 8 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 14.0 ppb (13) 0.19 ppb (3) N/A 4.2 μg/m3 (18) 18.0
 
July 29, 2021, 7 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A 15.0 ppb (14) 0.25 ppb (3) N/A 3.9 μg/m3 (17) 17.0
 
July 29, 2021, 6 p.m. N/A N/A N/A 13.0 ppb (13) N/A N/A 12.0 ppb (12) 0.28 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
July 29, 2021, 5 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A 11.0 ppb (11) 0.27 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
July 29, 2021, 4 p.m. N/A N/A N/A 13.0 ppb (13) N/A N/A 10.0 ppb (10) 0.26 ppb (4) N/A 9.9 μg/m3 (42) 42.0
 
July 29, 2021, 3 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A 11.0 ppb (11) 0.25 ppb (3) N/A 11.6 μg/m3 (49) 49.0
 
July 29, 2021, 2 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 10.0 ppb (10) 0.26 ppb (4) N/A 14.5 μg/m3 (57) 57.0
 
July 29, 2021, 1 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 10.0 ppb (10) 0.34 ppb (4) N/A 94.4 μg/m3 (172) 172.0
 
July 29, 2021, noon N/A N/A N/A 13.0 ppb (13) N/A N/A 10.0 ppb (10) 0.25 ppb (3) N/A 13.5 μg/m3 (54) 54.0
 
July 29, 2021, 11 a.m. N/A N/A N/A 15.0 ppb (15) N/A N/A 6.0 ppb (6) 0.25 ppb (3) N/A 9.7 μg/m3 (41) 41.0
 
July 29, 2021, 10 a.m. N/A N/A N/A 14.0 ppb (14) N/A N/A 3.0 ppb (3) 0.25 ppb (3) N/A 9.7 μg/m3 (41) 41.0
 
July 29, 2021, 9 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A 5.0 ppb (5) 0.2 ppb (3) N/A 10.9 μg/m3 (46) 46.0
 
July 29, 2021, 8 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A 4.0 ppb (4) 0.15 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
July 29, 2021, 7 a.m. N/A N/A N/A 15.0 ppb (15) N/A N/A 3.0 ppb (3) 0.15 ppb (2) N/A 9.8 μg/m3 (41) 41.0
 
July 29, 2021, 6 a.m. N/A N/A N/A 13.0 ppb (13) N/A N/A 6.0 ppb (6) 0.15 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
July 29, 2021, 5 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 4.0 ppb (4) 0.18 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 29, 2021, 4 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 8.0 ppb (8) 0.29 ppb (4) N/A 10.5 μg/m3 (44) 44.0
 
July 29, 2021, 3 a.m. N/A N/A N/A 15.0 ppb (15) N/A N/A 12.0 ppb (12) 0.31 ppb (4) N/A 7.2 μg/m3 (31) 31.0
 
July 29, 2021, 2 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 10.0 ppb (10) 0.37 ppb (5) N/A 6.7 μg/m3 (28) 28.0
 
July 29, 2021, 1 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A 17.0 ppb (16) 0.34 ppb (4) N/A 9.6 μg/m3 (40) 40.0
 
July 29, 2021, midnight N/A N/A N/A 12.0 ppb (12) N/A N/A 20.0 ppb (19) 0.34 ppb (4) N/A 10.9 μg/m3 (46) 46.0
 
July 28, 2021, 11 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A 24.0 ppb (23) 0.26 ppb (4) N/A 8.9 μg/m3 (38) 38.0
 
July 28, 2021, 10 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 25.0 ppb (24) 0.24 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
July 28, 2021, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 28.0 ppb (26) 0.23 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
July 28, 2021, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 32.0 ppb (30) 0.22 ppb (3) N/A 5.6 μg/m3 (24) 30.0
 
July 28, 2021, 7 p.m. N/A N/A N/A 10.0 ppb (10) N/A N/A 32.0 ppb (30) 0.24 ppb (3) N/A 5.8 μg/m3 (25) 30.0
 
July 28, 2021, 6 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A 31.0 ppb (29) 0.23 ppb (3) N/A 5.8 μg/m3 (25) 29.0
 
July 28, 2021, 5 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A 27.0 ppb (25) 0.2 ppb (3) N/A 5.4 μg/m3 (23) 25.0
 
July 28, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.19 ppb (3) N/A 4.8 μg/m3 (20) 25.0
 
July 28, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) 0.14 ppb (2) N/A 3.1 μg/m3 (13) 23.0
 
July 28, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) 0.19 ppb (3) N/A 3.2 μg/m3 (14) 19.0
 
July 28, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) 0.14 ppb (2) N/A 3.8 μg/m3 (16) 17.0
 
July 28, 2021, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.18 ppb (3) N/A 5.8 μg/m3 (25) 25.0
 
July 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) 0.23 ppb (3) N/A 7.5 μg/m3 (32) 32.0
 
July 28, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) 0.22 ppb (3) N/A 5.1 μg/m3 (22) 22.0
 
July 28, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.19 ppb (3) N/A 4.4 μg/m3 (19) 19.0
 
July 28, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.2 ppb (3) N/A 6.3 μg/m3 (27) 27.0
 
July 28, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.21 ppb (3) N/A 6.8 μg/m3 (29) 29.0
 
July 28, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.22 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
July 28, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) 0.21 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
July 28, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.3 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
July 28, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) 0.35 ppb (4) N/A 5.4 μg/m3 (23) 23.0
 
July 28, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) 0.38 ppb (5) N/A 4.2 μg/m3 (18) 18.0
 
July 28, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) 0.32 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
July 28, 2021, midnight N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.31 ppb (4) N/A 5.8 μg/m3 (25) 25.0
 
July 27, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) 0.26 ppb (4) N/A 4.9 μg/m3 (21) 21.0
 
July 27, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) 0.31 ppb (4) N/A 3.3 μg/m3 (14) 15.0
 
July 27, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) 0.31 ppb (4) N/A 2.8 μg/m3 (12) 16.0
 
July 27, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.33 ppb (4) N/A 4.1 μg/m3 (18) 18.0
 
July 27, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) 0.39 ppb (5) N/A 6.6 μg/m3 (28) 28.0
 
July 27, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) 0.38 ppb (5) N/A 14.7 μg/m3 (57) 57.0
 
July 27, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) 0.36 ppb (5) N/A 17.5 μg/m3 (63) 63.0
 
July 27, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) 0.31 ppb (4) N/A 12.4 μg/m3 (52) 52.0
 
July 27, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) 0.31 ppb (4) N/A 12.4 μg/m3 (52) 52.0
 
July 27, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.35 ppb (4) N/A 12.7 μg/m3 (53) 53.0
 
July 27, 2021, 1 p.m. N/A N/A N/A 13.0 ppb (13) N/A N/A 11.0 ppb (11) 0.4 ppb (5) N/A 14.2 μg/m3 (56) 56.0
 
July 27, 2021, noon N/A N/A N/A 16.0 ppb (16) N/A N/A 8.0 ppb (8) 0.42 ppb (5) N/A 17.7 μg/m3 (63) 63.0
 
July 27, 2021, 11 a.m. N/A N/A N/A 14.0 ppb (14) N/A N/A 7.0 ppb (7) 0.33 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
July 27, 2021, 10 a.m. N/A N/A N/A 14.0 ppb (14) N/A N/A 5.0 ppb (5) 0.37 ppb (5) N/A 23.3 μg/m3 (75) 75.0
 
July 27, 2021, 9 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A 8.0 ppb (8) 0.34 ppb (4) N/A 21.7 μg/m3 (72) 72.0
 
July 27, 2021, 8 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A 13.0 ppb (13) 0.3 ppb (4) N/A 21.8 μg/m3 (72) 72.0
 
July 27, 2021, 7 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A 12.0 ppb (12) 0.31 ppb (4) N/A 19.9 μg/m3 (68) 68.0
 
July 27, 2021, 6 a.m. N/A N/A N/A 15.0 ppb (15) N/A N/A 11.0 ppb (11) 0.34 ppb (4) N/A 17.9 μg/m3 (64) 64.0
 
July 27, 2021, 5 a.m. N/A N/A N/A 14.0 ppb (14) N/A N/A 13.0 ppb (13) 0.38 ppb (5) N/A 17.2 μg/m3 (62) 62.0
 
July 27, 2021, 4 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A 23.0 ppb (22) 0.36 ppb (5) N/A 16.1 μg/m3 (60) 60.0
 
July 27, 2021, 3 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A 25.0 ppb (24) 0.36 ppb (5) N/A 17.3 μg/m3 (62) 62.0
 
July 27, 2021, 2 a.m. N/A N/A N/A 10.0 ppb (10) N/A N/A 27.0 ppb (25) 0.35 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
July 27, 2021, 1 a.m. N/A N/A N/A 13.0 ppb (13) N/A N/A 26.0 ppb (25) 0.37 ppb (5) N/A 23.0 μg/m3 (74) 74.0
 
July 27, 2021, midnight N/A N/A N/A 11.0 ppb (11) N/A N/A 25.0 ppb (24) 0.44 ppb (5) N/A 27.4 μg/m3 (84) 84.0
 
July 26, 2021, 11 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 27.0 ppb (25) 0.45 ppb (6) N/A 30.1 μg/m3 (89) 89.0
 
July 26, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) 0.43 ppb (5) N/A 29.8 μg/m3 (89) 89.0
 
July 26, 2021, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) 0.44 ppb (5) N/A 30.0 μg/m3 (89) 89.0
 
July 26, 2021, 8 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) 0.47 ppb (6) N/A 34.6 μg/m3 (99) 99.0
 
July 26, 2021, 7 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) 0.51 ppb (6) N/A 40.7 μg/m3 (114) 114.0
 
July 26, 2021, 6 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A 34.0 ppb (32) 0.59 ppb (7) N/A 57.4 μg/m3 (152) 152.0
 
July 26, 2021, 5 p.m. N/A N/A N/A 10.0 ppb (10) N/A N/A 34.0 ppb (32) 0.62 ppb (7) N/A 69.8 μg/m3 (159) 159.0
 
July 26, 2021, 4 p.m. N/A N/A N/A 12.0 ppb (12) N/A N/A 27.0 ppb (25) 0.57 ppb (7) N/A 60.9 μg/m3 (154) 154.0
 
July 26, 2021, 3 p.m. N/A N/A N/A 13.0 ppb (13) N/A N/A 21.0 ppb (20) 0.52 ppb (6) N/A 51.0 μg/m3 (140) 140.0
 
July 26, 2021, 2 p.m. N/A N/A N/A 12.0 ppb (12) N/A N/A 20.0 ppb (19) 0.46 ppb (6) N/A 35.1 μg/m3 (100) 100.0
 
July 26, 2021, 1 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A 21.0 ppb (20) 0.45 ppb (6) N/A 26.9 μg/m3 (83) 83.0
 
July 26, 2021, noon N/A N/A N/A 16.0 ppb (16) N/A N/A 17.0 ppb (16) 0.47 ppb (6) N/A 25.7 μg/m3 (80) 80.0
 
July 26, 2021, 11 a.m. N/A N/A N/A 17.0 ppb (17) N/A N/A 16.0 ppb (15) 0.46 ppb (6) N/A 27.1 μg/m3 (83) 83.0
 
July 26, 2021, 10 a.m. N/A N/A N/A 15.0 ppb (15) N/A N/A 20.0 ppb (19) 0.43 ppb (5) N/A 29.8 μg/m3 (89) 89.0
 
July 26, 2021, 9 a.m. N/A N/A N/A 15.0 ppb (15) N/A N/A 21.0 ppb (20) 0.39 ppb (5) N/A 26.3 μg/m3 (81) 81.0
 
July 26, 2021, 8 a.m. N/A N/A N/A 13.0 ppb (13) N/A N/A 24.0 ppb (23) 0.34 ppb (4) N/A 25.9 μg/m3 (81) 81.0
 
July 26, 2021, 7 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 31.0 ppb (29) 0.33 ppb (4) N/A 27.9 μg/m3 (85) 85.0
 
July 26, 2021, 6 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A 34.0 ppb (32) 0.35 ppb (4) N/A 21.6 μg/m3 (71) 71.0
 
July 26, 2021, 5 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A 33.0 ppb (31) 0.37 ppb (5) N/A 15.5 μg/m3 (59) 59.0
 
July 26, 2021, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.37 ppb (5) N/A 18.1 μg/m3 (64) 64.0
 
July 26, 2021, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 32.0 ppb (30) 0.34 ppb (4) N/A 24.4 μg/m3 (77) 77.0
 
July 26, 2021, 2 a.m. N/A N/A N/A 13.0 ppb (13) N/A N/A 25.0 ppb (24) 0.41 ppb (5) N/A 23.4 μg/m3 (75) 75.0
 
July 26, 2021, 1 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A 31.0 ppb (29) 0.47 ppb (6) N/A 33.2 μg/m3 (96) 96.0
 
July 26, 2021, midnight N/A N/A N/A 8.0 ppb (8) N/A N/A 35.0 ppb (33) 0.39 ppb (5) N/A 31.6 μg/m3 (93) 93.0
 
July 25, 2021, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.3 ppb (4) N/A 20.7 μg/m3 (70) 70.0
 
July 25, 2021, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) 0.3 ppb (4) N/A 15.2 μg/m3 (58) 58.0
 
July 25, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 43.0 ppb (40) 0.28 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
July 25, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 43.0 ppb (40) 0.27 ppb (4) N/A 11.8 μg/m3 (50) 50.0
 
July 25, 2021, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 41.0 ppb (38) 0.28 ppb (4) N/A 10.8 μg/m3 (46) 46.0
 
July 25, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) 0.25 ppb (3) N/A 8.3 μg/m3 (35) 40.0
 
July 25, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.25 ppb (3) N/A 5.8 μg/m3 (25) 38.0
 
July 25, 2021, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) 0.24 ppb (3) N/A 3.4 μg/m3 (15) 37.0
 
July 25, 2021, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.23 ppb (3) N/A 1.8 μg/m3 (8) 36.0
 
July 25, 2021, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.23 ppb (3) N/A 1.8 μg/m3 (8) 33.0
 
July 25, 2021, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.25 ppb (3) N/A 4.9 μg/m3 (21) 29.0
 
July 25, 2021, noon N/A N/A N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.22 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
July 25, 2021, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) 0.22 ppb (3) N/A 6.5 μg/m3 (28) 28.0
 
July 25, 2021, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) 0.21 ppb (3) N/A 4.1 μg/m3 (18) 25.0
 
July 25, 2021, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) 0.2 ppb (3) N/A 4.1 μg/m3 (18) 25.0
 
July 25, 2021, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.18 ppb (3) N/A 5.4 μg/m3 (23) 24.0
 
July 25, 2021, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) 0.17 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
July 25, 2021, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) 0.18 ppb (3) N/A 7.7 μg/m3 (33) 33.0
 
July 25, 2021, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) 0.19 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
July 25, 2021, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) 0.21 ppb (3) N/A 8.2 μg/m3 (35) 35.0
 
July 25, 2021, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) 0.24 ppb (3) N/A 6.3 μg/m3 (27) 27.0
 
July 25, 2021, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 25.0 ppb (24) 0.26 ppb (4) N/A 7.8 μg/m3 (33) 33.0