ID: 2739

AQSQID: CC0050103

Site Name: Saint-Jean-Baptiste

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

Updated: Aug. 1, 2021, 3:54 a.m.

Location: Montréal (Pointe-aux-trembles), N/A

Reporting: True, Located: True

Current AQI: 22.0

Montréal (Pointe-aux-trembles) N/A, CA: 45.641026, -73.499682

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Aug. 1, 2021, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 5.1 μg/m3 (22) 22.0
 
Aug. 1, 2021, 1 a.m. N/A N/A N/A 9.0 ppb (9) N/A 10.0 ppb (15) 17.0 ppb (16) N/A N/A 3.7 μg/m3 (16) 16.0
 
Aug. 1, 2021, midnight N/A N/A N/A 9.0 ppb (9) N/A 9.0 ppb (13) 17.0 ppb (16) N/A N/A 4.9 μg/m3 (21) 21.0
 
July 31, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 4.3 μg/m3 (18) 23.0
 
July 31, 2021, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 2.0 ppb (3) 24.0 ppb (23) N/A N/A 4.2 μg/m3 (18) 23.0
 
July 31, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 4.0 ppb (6) 27.0 ppb (25) N/A N/A 3.5 μg/m3 (15) 25.0
 
July 31, 2021, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 7.0 ppb (10) 26.0 ppb (25) N/A N/A 3.0 μg/m3 (13) 25.0
 
July 31, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 2.0 ppb (3) 28.0 ppb (26) N/A N/A 2.9 μg/m3 (13) 26.0
 
July 31, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 4.0 ppb (6) 28.0 ppb (26) N/A N/A 2.7 μg/m3 (12) 26.0
 
July 31, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 3.0 ppb (5) 26.0 ppb (25) N/A N/A 3.0 μg/m3 (13) 25.0
 
July 31, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 3.0 ppb (5) 27.0 ppb (25) N/A N/A 2.8 μg/m3 (12) 25.0
 
July 31, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 3.0 ppb (5) 28.0 ppb (26) N/A N/A 2.2 μg/m3 (10) 26.0
 
July 31, 2021, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 2.0 ppb (3) 25.0 ppb (24) N/A N/A 2.4 μg/m3 (10) 24.0
 
July 31, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 22.0 ppb (21) N/A N/A 2.1 μg/m3 (9) 21.0
 
July 31, 2021, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 2.9 μg/m3 (13) 17.0
 
July 31, 2021, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 1.9 μg/m3 (8) 15.0
 
July 31, 2021, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 1.8 μg/m3 (8) 13.0
 
July 31, 2021, 9 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 1.3 μg/m3 (6) 13.0
 
July 31, 2021, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 1.1 μg/m3 (5) 13.0
 
July 31, 2021, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 17.0 ppb (16) N/A N/A 1.1 μg/m3 (5) 16.0
 
July 31, 2021, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 7.0 ppb (10) 14.0 ppb (13) N/A N/A 1.0 μg/m3 (5) 13.0
 
July 31, 2021, 5 a.m. N/A N/A N/A 7.0 ppb (7) N/A 7.0 ppb (10) 14.0 ppb (13) N/A N/A 1.0 μg/m3 (5) 13.0
 
July 31, 2021, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A 3.0 ppb (5) 18.0 ppb (17) N/A N/A 0.9 μg/m3 (4) 17.0
 
July 31, 2021, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 0.8 μg/m3 (4) 19.0
 
July 31, 2021, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 0.7 μg/m3 (3) 20.0
 
July 31, 2021, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 0.6 μg/m3 (3) 21.0
 
July 31, 2021, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 0.6 μg/m3 (3) 21.0
 
July 30, 2021, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 0.8 μg/m3 (4) 21.0
 
July 30, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 1.0 μg/m3 (5) 19.0
 
July 30, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 1.0 μg/m3 (5) 19.0
 
July 30, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 1.0 μg/m3 (5) 21.0
 
July 30, 2021, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 10.0 ppb (15) 18.0 ppb (17) N/A N/A 1.0 μg/m3 (5) 17.0
 
July 30, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 5.0 ppb (8) 19.0 ppb (18) N/A N/A 1.5 μg/m3 (7) 18.0
 
July 30, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 10.0 ppb (15) 18.0 ppb (17) N/A N/A 2.4 μg/m3 (10) 17.0
 
July 30, 2021, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A 10.0 ppb (15) 20.0 ppb (19) N/A N/A 2.2 μg/m3 (10) 19.0
 
July 30, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
July 30, 2021, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 1.3 μg/m3 (6) 25.0
 
July 30, 2021, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 1.8 μg/m3 (8) 23.0
 
July 30, 2021, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 4.1 μg/m3 (18) 21.0
 
July 30, 2021, 11 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 8.4 μg/m3 (36) 36.0
 
July 30, 2021, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 9.6 μg/m3 (40) 40.0
 
July 30, 2021, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 7.9 μg/m3 (33) 33.0
 
July 30, 2021, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 6.8 μg/m3 (29) 29.0
 
July 30, 2021, 7 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 8.9 μg/m3 (38) 38.0
 
July 30, 2021, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 10.7 μg/m3 (45) 45.0
 
July 30, 2021, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 30, 2021, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 9.5 μg/m3 (40) 40.0
 
July 30, 2021, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 9.2 μg/m3 (39) 39.0
 
July 30, 2021, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 7.1 μg/m3 (30) 30.0
 
July 30, 2021, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 8.4 μg/m3 (36) 36.0
 
July 30, 2021, midnight N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 8.1 μg/m3 (34) 34.0
 
July 29, 2021, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 29, 2021, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 4.1 μg/m3 (18) 18.0
 
July 29, 2021, 9 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 5.4 μg/m3 (23) 23.0
 
July 29, 2021, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 5.7 μg/m3 (24) 24.0
 
July 29, 2021, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 4.8 μg/m3 (20) 20.0
 
July 29, 2021, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 4.0 μg/m3 (17) 21.0
 
July 29, 2021, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 6.2 μg/m3 (26) 26.0
 
July 29, 2021, 4 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 8.3 μg/m3 (35) 35.0
 
July 29, 2021, 3 p.m. N/A N/A N/A 12.0 ppb (12) N/A 1.0 ppb (2) 15.0 ppb (14) N/A N/A 7.6 μg/m3 (32) 32.0
 
July 29, 2021, 2 p.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 5.6 μg/m3 (24) 24.0
 
July 29, 2021, 1 p.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 29, 2021, noon N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 8.4 μg/m3 (36) 36.0
 
July 29, 2021, 11 a.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 9.0 ppb (9) N/A N/A 9.9 μg/m3 (42) 42.0
 
July 29, 2021, 10 a.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 7.0 ppb (7) N/A N/A 9.9 μg/m3 (42) 42.0
 
July 29, 2021, 9 a.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 7.0 ppb (7) N/A N/A 7.6 μg/m3 (32) 32.0
 
July 29, 2021, 8 a.m. N/A N/A N/A 15.0 ppb (15) N/A 1.0 ppb (2) 4.0 ppb (4) N/A N/A 5.2 μg/m3 (22) 22.0
 
July 29, 2021, 7 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 4.5 μg/m3 (19) 19.0
 
July 29, 2021, 6 a.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 5.5 μg/m3 (23) 23.0
 
July 29, 2021, 5 a.m. N/A N/A N/A 11.0 ppb (11) N/A 1.0 ppb (2) 15.0 ppb (14) N/A N/A 6.4 μg/m3 (27) 27.0
 
July 29, 2021, 4 a.m. N/A N/A N/A 12.0 ppb (12) N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 4.1 μg/m3 (18) 18.0
 
July 29, 2021, 3 a.m. N/A N/A N/A 12.0 ppb (12) N/A 2.0 ppb (3) 17.0 ppb (16) N/A N/A 3.6 μg/m3 (16) 16.0
 
July 29, 2021, 2 a.m. N/A N/A N/A 10.0 ppb (10) N/A 1.0 ppb (2) 20.0 ppb (19) N/A N/A 3.6 μg/m3 (16) 19.0
 
July 29, 2021, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 3.8 μg/m3 (16) 25.0
 
July 29, 2021, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 2.8 μg/m3 (12) 24.0
 
July 28, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 1.8 μg/m3 (8) 25.0
 
July 28, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 1.9 μg/m3 (8) 29.0
 
July 28, 2021, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 2.3 μg/m3 (10) 39.0
 
July 28, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 1.9 μg/m3 (8) 36.0
 
July 28, 2021, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 1.8 μg/m3 (8) 28.0
 
July 28, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 2.0 μg/m3 (9) 28.0
 
July 28, 2021, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 2.2 μg/m3 (10) 24.0
 
July 28, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 2.1 μg/m3 (9) 25.0
 
July 28, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 2.0 ppb (3) 25.0 ppb (24) N/A N/A 3.2 μg/m3 (14) 24.0
 
July 28, 2021, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 2.0 ppb (3) 21.0 ppb (20) N/A N/A 3.5 μg/m3 (15) 20.0
 
July 28, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 6.0 ppb (9) 16.0 ppb (15) N/A N/A 4.8 μg/m3 (20) 20.0
 
July 28, 2021, noon N/A N/A N/A 5.0 ppb (5) N/A 7.0 ppb (10) 12.0 ppb (12) N/A N/A 6.2 μg/m3 (26) 26.0
 
July 28, 2021, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 2.0 ppb (3) 11.0 ppb (11) N/A N/A 5.3 μg/m3 (23) 23.0
 
July 28, 2021, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 4.8 μg/m3 (20) 20.0
 
July 28, 2021, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 4.5 μg/m3 (19) 19.0
 
July 28, 2021, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 4.0 ppb (4) N/A N/A 4.9 μg/m3 (21) 21.0
 
July 28, 2021, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 5.7 μg/m3 (24) 24.0
 
July 28, 2021, 6 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 6.8 μg/m3 (29) 29.0
 
July 28, 2021, 5 a.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 5.8 μg/m3 (25) 25.0
 
July 28, 2021, 4 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 5.1 μg/m3 (22) 22.0
 
July 28, 2021, 3 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 6.0 ppb (6) N/A N/A 5.5 μg/m3 (23) 23.0
 
July 28, 2021, 2 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 6.8 μg/m3 (29) 29.0
 
July 28, 2021, 1 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 4.8 μg/m3 (20) 20.0
 
July 28, 2021, midnight N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 3.1 μg/m3 (13) 14.0
 
July 27, 2021, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 2.4 μg/m3 (10) 13.0
 
July 27, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 3.1 μg/m3 (13) 17.0
 
July 27, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 4.0 ppb (6) 21.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 27, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 5.5 μg/m3 (23) 23.0
 
July 27, 2021, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 7.4 μg/m3 (31) 31.0
 
July 27, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 7.1 μg/m3 (30) 30.0
 
July 27, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 6.8 μg/m3 (29) 29.0
 
July 27, 2021, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 6.3 μg/m3 (27) 27.0
 
July 27, 2021, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 7.4 μg/m3 (31) 31.0
 
July 27, 2021, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 8.1 μg/m3 (34) 34.0
 
July 27, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 10.8 μg/m3 (46) 46.0
 
July 27, 2021, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 11.2 μg/m3 (47) 47.0
 
July 27, 2021, 11 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 14.2 μg/m3 (56) 56.0
 
July 27, 2021, 10 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 15.6 μg/m3 (59) 59.0
 
July 27, 2021, 9 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 11.0 ppb (11) N/A N/A 16.6 μg/m3 (61) 61.0
 
July 27, 2021, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 18.7 μg/m3 (65) 65.0
 
July 27, 2021, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A 3.0 ppb (5) 17.0 ppb (16) N/A N/A 19.9 μg/m3 (68) 68.0
 
July 27, 2021, 6 a.m. N/A N/A N/A 11.0 ppb (11) N/A 6.0 ppb (9) 13.0 ppb (13) N/A N/A 20.2 μg/m3 (69) 69.0
 
July 27, 2021, 5 a.m. N/A N/A N/A 8.0 ppb (8) N/A 3.0 ppb (5) 17.0 ppb (16) N/A N/A 21.1 μg/m3 (70) 70.0
 
July 27, 2021, 4 a.m. N/A N/A N/A 7.0 ppb (7) N/A 3.0 ppb (5) 21.0 ppb (20) N/A N/A 19.6 μg/m3 (67) 67.0
 
July 27, 2021, 3 a.m. N/A N/A N/A 12.0 ppb (12) N/A 9.0 ppb (13) 21.0 ppb (20) N/A N/A 17.5 μg/m3 (63) 63.0
 
July 27, 2021, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 20.3 μg/m3 (69) 69.0
 
July 27, 2021, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 29.6 μg/m3 (88) 88.0
 
July 27, 2021, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 32.6 μg/m3 (95) 95.0
 
July 26, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 32.9 μg/m3 (95) 95.0
 
July 26, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 3.0 ppb (5) 30.0 ppb (28) N/A N/A 31.0 μg/m3 (91) 91.0
 
July 26, 2021, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A 4.0 ppb (6) 31.0 ppb (29) N/A N/A 31.8 μg/m3 (93) 93.0
 
July 26, 2021, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 34.1 μg/m3 (98) 98.0
 
July 26, 2021, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 40.3 μg/m3 (113) 113.0
 
July 26, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 62.2 μg/m3 (155) 155.0
 
July 26, 2021, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 91.0 μg/m3 (170) 170.0
 
July 26, 2021, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 84.6 μg/m3 (167) 167.0
 
July 26, 2021, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 39.6 μg/m3 (112) 112.0
 
July 26, 2021, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 29.5 μg/m3 (88) 88.0
 
July 26, 2021, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 27.3 μg/m3 (83) 83.0
 
July 26, 2021, noon N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 21.4 μg/m3 (71) 71.0
 
July 26, 2021, 11 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 20.4 μg/m3 (69) 69.0
 
July 26, 2021, 10 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 18.1 μg/m3 (64) 64.0
 
July 26, 2021, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 15.8 μg/m3 (59) 59.0
 
July 26, 2021, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 17.0 μg/m3 (62) 62.0
 
July 26, 2021, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 19.4 μg/m3 (67) 67.0
 
July 26, 2021, 6 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 23.6 μg/m3 (76) 76.0
 
July 26, 2021, 5 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 24.4 μg/m3 (77) 77.0
 
July 26, 2021, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 41.0 ppb (38) N/A N/A 23.1 μg/m3 (75) 75.0
 
July 26, 2021, 3 a.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 26.4 μg/m3 (82) 82.0
 
July 26, 2021, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 26.2 μg/m3 (81) 81.0
 
July 26, 2021, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 22.2 μg/m3 (73) 73.0
 
July 26, 2021, midnight N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 42.0 ppb (39) N/A N/A 17.7 μg/m3 (63) 63.0
 
July 25, 2021, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 2.0 ppb (3) 39.0 ppb (37) N/A N/A 16.1 μg/m3 (60) 60.0
 
July 25, 2021, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 13.6 μg/m3 (55) 55.0
 
July 25, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 11.1 μg/m3 (47) 47.0
 
July 25, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 13.8 μg/m3 (55) 55.0
 
July 25, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 15.6 μg/m3 (59) 59.0
 
July 25, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 19.9 μg/m3 (68) 68.0
 
July 25, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 14.7 μg/m3 (57) 57.0
 
July 25, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 11.6 μg/m3 (49) 49.0
 
July 25, 2021, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 9.1 μg/m3 (38) 38.0
 
July 25, 2021, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 7.8 μg/m3 (33) 34.0
 
July 25, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 11.6 μg/m3 (49) 49.0
 
July 25, 2021, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 16.9 μg/m3 (62) 62.0
 
July 25, 2021, 11 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 16.2 μg/m3 (60) 60.0
 
July 25, 2021, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 13.2 μg/m3 (54) 54.0
 
July 25, 2021, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 9.2 μg/m3 (39) 39.0
 
July 25, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 8.1 μg/m3 (34) 34.0
 
July 25, 2021, 7 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 6.8 μg/m3 (29) 29.0
 
July 25, 2021, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 6.2 μg/m3 (26) 26.0
 
July 25, 2021, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 6.1 μg/m3 (26) 26.0
 
July 25, 2021, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 6.6 μg/m3 (28) 28.0
 
July 25, 2021, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 6.6 μg/m3 (28) 28.0