Westmount, Quebec, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
August Air Quality Analysis
Westmount, Quebec, Canada
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2025
80AQILowest AQI recorded on
11th Aug 2023
13AQISame Day Analysis (5th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 42 of Good air quality, showing improvement over 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Westmount, Quebec, Canada
AQI
Day
Night
.
5 AM5th Aug 2025
8 PM
4 AM6th Aug 2025
Day time
Avg. Highest Time
5AM5th Aug
44AQI
Avg. Lowest Time
8PM5th Aug
31AQI
Night time
Avg. Highest Time
9PM5th Aug
35AQI
Avg. Lowest Time
4AM6th Aug
30AQI
In the last 24 hours,
Westmount's AQI reached its highest point of 44 at 5 AM during the Day, while the lowest point, 30, was recorded at 4 AM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Westmount, Quebec, Canada
JulAug
07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th
Day
Night
7th Jul 2025445 AMAQI
7th Jul 2025436 AMAQI
7th Jul 2025387 AMAQI
7th Jul 2025448 AMAQI
7th Jul 2025509 AMAQI
7th Jul 20255110 AMAQI
7th Jul 20255011 AMAQI
7th Jul 20255212 PMAQI
7th Jul 2025521 PMAQI
7th Jul 2025522 PMAQI
7th Jul 2025523 PMAQI
7th Jul 2025504 PMAQI
7th Jul 2025465 PMAQI
7th Jul 2025406 PMAQI
7th Jul 2025377 PMAQI
7th Jul 2025358 PMAQI
7th Jul 2025429 PMAQI
7th Jul 20254010 PMAQI
7th Jul 20253011 PMAQI
8th Jul 20253412 AMAQI
8th Jul 2025361 AMAQI
8th Jul 2025382 AMAQI
8th Jul 2025313 AMAQI
8th Jul 2025284 AMAQI
18°C15/24°C
8th Jul 2025245 AMAQI
8th Jul 2025246 AMAQI
8th Jul 2025287 AMAQI
8th Jul 2025308 AMAQI
8th Jul 2025309 AMAQI
8th Jul 20252910 AMAQI
8th Jul 20253111 AMAQI
8th Jul 20253512 PMAQI
8th Jul 2025371 PMAQI
8th Jul 2025382 PMAQI
8th Jul 2025413 PMAQI
8th Jul 2025384 PMAQI
8th Jul 2025355 PMAQI
8th Jul 2025366 PMAQI
8th Jul 2025347 PMAQI
8th Jul 2025348 PMAQI
8th Jul 2025329 PMAQI
8th Jul 20253310 PMAQI
8th Jul 20253211 PMAQI
9th Jul 20253312 AMAQI
9th Jul 2025341 AMAQI
9th Jul 2025342 AMAQI
9th Jul 2025403 AMAQI
9th Jul 2025404 AMAQI
22°C16/30°C
9th Jul 2025445 AMAQI
9th Jul 2025466 AMAQI
9th Jul 2025497 AMAQI
9th Jul 2025488 AMAQI
9th Jul 2025459 AMAQI
9th Jul 20254210 AMAQI
9th Jul 20254411 AMAQI
9th Jul 20254512 PMAQI
9th Jul 2025421 PMAQI
9th Jul 2025412 PMAQI
9th Jul 2025433 PMAQI
9th Jul 2025444 PMAQI
9th Jul 2025425 PMAQI
9th Jul 2025406 PMAQI
9th Jul 2025427 PMAQI
9th Jul 2025448 PMAQI
9th Jul 2025439 PMAQI
9th Jul 20254410 PMAQI
9th Jul 20253811 PMAQI
10th Jul 20253612 AMAQI
10th Jul 2025371 AMAQI
10th Jul 2025382 AMAQI
10th Jul 2025443 AMAQI
10th Jul 2025444 AMAQI
24°C17/31°C
10th Jul 2025445 AMAQI
10th Jul 2025476 AMAQI
10th Jul 2025487 AMAQI
10th Jul 2025488 AMAQI
10th Jul 2025469 AMAQI
10th Jul 20254610 AMAQI
10th Jul 20254411 AMAQI
10th Jul 20254612 PMAQI
10th Jul 2025471 PMAQI
10th Jul 2025472 PMAQI
10th Jul 2025483 PMAQI
10th Jul 2025484 PMAQI
10th Jul 2025495 PMAQI
10th Jul 2025486 PMAQI
10th Jul 2025507 PMAQI
10th Jul 2025498 PMAQI
10th Jul 2025469 PMAQI
10th Jul 20254410 PMAQI
10th Jul 20254411 PMAQI
11th Jul 20254212 AMAQI
11th Jul 2025401 AMAQI
11th Jul 2025412 AMAQI
11th Jul 2025433 AMAQI
11th Jul 2025454 AMAQI
25°C19/30°C
11th Jul 2025465 AMAQI
11th Jul 2025476 AMAQI
11th Jul 2025457 AMAQI
11th Jul 2025488 AMAQI
11th Jul 2025499 AMAQI
11th Jul 20254810 AMAQI
11th Jul 20255011 AMAQI
11th Jul 20254812 PMAQI
11th Jul 2025491 PMAQI
11th Jul 2025482 PMAQI
11th Jul 2025503 PMAQI
11th Jul 2025504 PMAQI
11th Jul 2025505 PMAQI
11th Jul 2025516 PMAQI
11th Jul 2025507 PMAQI
11th Jul 2025518 PMAQI
11th Jul 2025469 PMAQI
11th Jul 20254510 PMAQI
11th Jul 20254411 PMAQI
12th Jul 20254512 AMAQI
12th Jul 2025501 AMAQI
12th Jul 2025512 AMAQI
12th Jul 2025513 AMAQI
12th Jul 2025524 AMAQI
26°C19/33°C
12th Jul 2025515 AMAQI
12th Jul 2025496 AMAQI
12th Jul 2025487 AMAQI
12th Jul 2025508 AMAQI
12th Jul 2025529 AMAQI
12th Jul 20255210 AMAQI
12th Jul 20255211 AMAQI
12th Jul 20255212 PMAQI
12th Jul 2025521 PMAQI
12th Jul 2025532 PMAQI
12th Jul 2025533 PMAQI
12th Jul 2025524 PMAQI
12th Jul 2025525 PMAQI
12th Jul 2025526 PMAQI
12th Jul 2025537 PMAQI
12th Jul 2025538 PMAQI
12th Jul 2025529 PMAQI
12th Jul 20255210 PMAQI
12th Jul 20255211 PMAQI
13th Jul 20255112 AMAQI
13th Jul 2025511 AMAQI
13th Jul 2025512 AMAQI
13th Jul 2025453 AMAQI
13th Jul 2025434 AMAQI
27°C20/34°C
13th Jul 2025395 AMAQI
13th Jul 2025386 AMAQI
13th Jul 2025377 AMAQI
13th Jul 2025388 AMAQI
13th Jul 2025379 AMAQI
13th Jul 20253710 AMAQI
13th Jul 20253911 AMAQI
13th Jul 20254012 PMAQI
13th Jul 2025401 PMAQI
13th Jul 2025392 PMAQI
13th Jul 2025413 PMAQI
13th Jul 2025414 PMAQI
13th Jul 2025425 PMAQI
13th Jul 2025436 PMAQI
13th Jul 2025417 PMAQI
13th Jul 2025418 PMAQI
13th Jul 2025429 PMAQI
13th Jul 20254210 PMAQI
13th Jul 20254111 PMAQI
14th Jul 20254212 AMAQI
14th Jul 2025411 AMAQI
14th Jul 2025402 AMAQI
14th Jul 2025423 AMAQI
14th Jul 2025404 AMAQI
26°C23/30°C
14th Jul 2025385 AMAQI
14th Jul 2025386 AMAQI
14th Jul 2025377 AMAQI
14th Jul 2025368 AMAQI
14th Jul 2025379 AMAQI
14th Jul 20253810 AMAQI
14th Jul 20254311 AMAQI
14th Jul 20255012 PMAQI
14th Jul 2025481 PMAQI
14th Jul 2025482 PMAQI
14th Jul 2025423 PMAQI
14th Jul 2025404 PMAQI
14th Jul 2025385 PMAQI
14th Jul 2025406 PMAQI
14th Jul 2025387 PMAQI
14th Jul 2025398 PMAQI
14th Jul 2025409 PMAQI
14th Jul 20254110 PMAQI
14th Jul 20253711 PMAQI
15th Jul 20253712 AMAQI
15th Jul 2025391 AMAQI
15th Jul 2025382 AMAQI
15th Jul 2025323 AMAQI
15th Jul 2025284 AMAQI
27°C22/32°C
15th Jul 2025315 AMAQI
15th Jul 2025346 AMAQI
15th Jul 2025417 AMAQI
15th Jul 2025398 AMAQI
15th Jul 2025439 AMAQI
15th Jul 20254310 AMAQI
15th Jul 20254311 AMAQI
15th Jul 20254412 PMAQI
15th Jul 2025441 PMAQI
15th Jul 2025442 PMAQI
15th Jul 2025453 PMAQI
15th Jul 2025454 PMAQI
15th Jul 2025415 PMAQI
15th Jul 2025406 PMAQI
15th Jul 2025407 PMAQI
15th Jul 2025408 PMAQI
15th Jul 2025409 PMAQI
15th Jul 20253910 PMAQI
15th Jul 20254011 PMAQI
16th Jul 20254012 AMAQI
16th Jul 2025401 AMAQI
16th Jul 2025402 AMAQI
16th Jul 2025423 AMAQI
16th Jul 2025504 AMAQI
27°C20/33°C
16th Jul 2025505 AMAQI
16th Jul 2025506 AMAQI
16th Jul 2025517 AMAQI
16th Jul 2025558 AMAQI
16th Jul 2025549 AMAQI
16th Jul 20255510 AMAQI
16th Jul 20255111 AMAQI
16th Jul 20255212 PMAQI
16th Jul 2025521 PMAQI
16th Jul 2025502 PMAQI
16th Jul 2025523 PMAQI
16th Jul 2025524 PMAQI
16th Jul 2025515 PMAQI
16th Jul 2025506 PMAQI
16th Jul 2025507 PMAQI
16th Jul 2025518 PMAQI
16th Jul 2025509 PMAQI
16th Jul 20254910 PMAQI
16th Jul 20254911 PMAQI
17th Jul 20254912 AMAQI
17th Jul 2025501 AMAQI
17th Jul 2025502 AMAQI
17th Jul 2025563 AMAQI
17th Jul 2025574 AMAQI
29°C22/36°C
17th Jul 2025545 AMAQI
17th Jul 2025536 AMAQI
17th Jul 2025527 AMAQI
17th Jul 2025528 AMAQI
17th Jul 2025529 AMAQI
17th Jul 20255010 AMAQI
17th Jul 20254811 AMAQI
17th Jul 20254512 PMAQI
17th Jul 2025441 PMAQI
17th Jul 2025432 PMAQI
17th Jul 2025443 PMAQI
17th Jul 2025454 PMAQI
17th Jul 2025465 PMAQI
17th Jul 2025446 PMAQI
17th Jul 2025427 PMAQI
17th Jul 2025428 PMAQI
17th Jul 2025499 PMAQI
17th Jul 20254710 PMAQI
17th Jul 20253511 PMAQI
18th Jul 20253412 AMAQI
18th Jul 2025331 AMAQI
18th Jul 2025302 AMAQI
18th Jul 2025203 AMAQI
18th Jul 2025174 AMAQI
27°C18/31°C
18th Jul 2025145 AMAQI
18th Jul 2025146 AMAQI
18th Jul 2025147 AMAQI
18th Jul 2025158 AMAQI
18th Jul 2025179 AMAQI
18th Jul 20251810 AMAQI
18th Jul 20251911 AMAQI
18th Jul 20252112 PMAQI
18th Jul 2025221 PMAQI
18th Jul 2025222 PMAQI
18th Jul 2025233 PMAQI
18th Jul 2025234 PMAQI
18th Jul 2025235 PMAQI
18th Jul 2025236 PMAQI
18th Jul 2025247 PMAQI
18th Jul 2025238 PMAQI
18th Jul 2025229 PMAQI
18th Jul 20252210 PMAQI
18th Jul 20252611 PMAQI
19th Jul 20252812 AMAQI
19th Jul 2025281 AMAQI
19th Jul 2025292 AMAQI
19th Jul 2025303 AMAQI
19th Jul 2025314 AMAQI
21°C14/28°C
19th Jul 2025295 AMAQI
19th Jul 2025286 AMAQI
19th Jul 2025277 AMAQI
19th Jul 2025288 AMAQI
19th Jul 2025279 AMAQI
19th Jul 20252610 AMAQI
19th Jul 20252711 AMAQI
19th Jul 20252812 PMAQI
19th Jul 2025291 PMAQI
19th Jul 2025312 PMAQI
19th Jul 2025363 PMAQI
19th Jul 2025374 PMAQI
19th Jul 2025405 PMAQI
19th Jul 2025416 PMAQI
19th Jul 2025417 PMAQI
19th Jul 2025428 PMAQI
19th Jul 2025339 PMAQI
19th Jul 20253310 PMAQI
19th Jul 20254311 PMAQI
20th Jul 20253912 AMAQI
20th Jul 2025401 AMAQI
20th Jul 2025392 AMAQI
20th Jul 2025433 AMAQI
20th Jul 2025474 AMAQI
22°C15/29°C
20th Jul 2025485 AMAQI
20th Jul 2025456 AMAQI
20th Jul 2025427 AMAQI
20th Jul 2025408 AMAQI
20th Jul 2025399 AMAQI
20th Jul 20253510 AMAQI
20th Jul 20253411 AMAQI
20th Jul 20253312 PMAQI
20th Jul 2025331 PMAQI
20th Jul 2025322 PMAQI
20th Jul 2025313 PMAQI
20th Jul 2025334 PMAQI
20th Jul 2025355 PMAQI
20th Jul 2025356 PMAQI
20th Jul 2025347 PMAQI
20th Jul 2025358 PMAQI
20th Jul 2025389 PMAQI
20th Jul 20253910 PMAQI
20th Jul 20254111 PMAQI
21st Jul 20254012 AMAQI
21st Jul 2025361 AMAQI
21st Jul 2025372 AMAQI
21st Jul 2025503 AMAQI
21st Jul 2025534 AMAQI
22°C17/29°C
21st Jul 2025455 AMAQI
21st Jul 2025356 AMAQI
21st Jul 2025317 AMAQI
21st Jul 2025288 AMAQI
21st Jul 2025299 AMAQI
21st Jul 20252810 AMAQI
21st Jul 20252711 AMAQI
21st Jul 20252612 PMAQI
21st Jul 2025261 PMAQI
21st Jul 2025232 PMAQI
21st Jul 2025223 PMAQI
21st Jul 2025244 PMAQI
21st Jul 2025255 PMAQI
21st Jul 2025246 PMAQI
21st Jul 2025247 PMAQI
21st Jul 2025238 PMAQI
21st Jul 2025259 PMAQI
21st Jul 20252410 PMAQI
21st Jul 20252311 PMAQI
22nd Jul 20252212 AMAQI
22nd Jul 2025221 AMAQI
22nd Jul 2025212 AMAQI
22nd Jul 2025193 AMAQI
22nd Jul 2025174 AMAQI
19°C15/24°C
22nd Jul 2025185 AMAQI
22nd Jul 2025186 AMAQI
22nd Jul 2025197 AMAQI
22nd Jul 2025208 AMAQI
22nd Jul 2025219 AMAQI
22nd Jul 20252110 AMAQI
22nd Jul 20252011 AMAQI
22nd Jul 20251812 PMAQI
22nd Jul 2025201 PMAQI
22nd Jul 2025192 PMAQI
22nd Jul 2025193 PMAQI
22nd Jul 2025204 PMAQI
22nd Jul 2025205 PMAQI
22nd Jul 2025206 PMAQI
22nd Jul 2025197 PMAQI
22nd Jul 2025208 PMAQI
22nd Jul 2025199 PMAQI
22nd Jul 20251910 PMAQI
22nd Jul 20252111 PMAQI
23rd Jul 20252012 AMAQI
23rd Jul 2025221 AMAQI
23rd Jul 2025222 AMAQI
23rd Jul 2025233 AMAQI
23rd Jul 2025244 AMAQI
19°C12/25°C
23rd Jul 2025245 AMAQI
23rd Jul 2025266 AMAQI
23rd Jul 2025267 AMAQI
23rd Jul 2025278 AMAQI
23rd Jul 2025299 AMAQI
23rd Jul 20253010 AMAQI
23rd Jul 20253311 AMAQI
23rd Jul 20253112 PMAQI
23rd Jul 2025281 PMAQI
23rd Jul 2025262 PMAQI
23rd Jul 2025243 PMAQI
23rd Jul 2025244 PMAQI
23rd Jul 2025245 PMAQI
23rd Jul 2025236 PMAQI
23rd Jul 2025237 PMAQI
23rd Jul 2025238 PMAQI
23rd Jul 2025249 PMAQI
23rd Jul 20252410 PMAQI
23rd Jul 20252511 PMAQI
24th Jul 20252412 AMAQI
24th Jul 2025261 AMAQI
24th Jul 2025272 AMAQI
24th Jul 2025293 AMAQI
24th Jul 2025284 AMAQI
22°C13/30°C
24th Jul 2025275 AMAQI
24th Jul 2025276 AMAQI
24th Jul 2025267 AMAQI
24th Jul 2025278 AMAQI
24th Jul 2025289 AMAQI
24th Jul 20253010 AMAQI
24th Jul 20253411 AMAQI
24th Jul 20253912 PMAQI
24th Jul 2025361 PMAQI
24th Jul 2025382 PMAQI
24th Jul 2025403 PMAQI
24th Jul 2025364 PMAQI
24th Jul 2025315 PMAQI
24th Jul 2025316 PMAQI
24th Jul 2025337 PMAQI
24th Jul 2025338 PMAQI
24th Jul 2025369 PMAQI
24th Jul 20253810 PMAQI
24th Jul 20253311 PMAQI
25th Jul 20253112 AMAQI
25th Jul 2025301 AMAQI
25th Jul 2025322 AMAQI
25th Jul 2025383 AMAQI
25th Jul 2025434 AMAQI
27°C17/36°C
25th Jul 2025375 AMAQI
25th Jul 2025346 AMAQI
25th Jul 2025357 AMAQI
25th Jul 2025348 AMAQI
25th Jul 2025349 AMAQI
25th Jul 20253310 AMAQI
25th Jul 20253311 AMAQI
25th Jul 20253312 PMAQI
25th Jul 2025361 PMAQI
25th Jul 2025442 PMAQI
25th Jul 2025433 PMAQI
25th Jul 2025414 PMAQI
25th Jul 2025385 PMAQI
25th Jul 2025376 PMAQI
25th Jul 2025377 PMAQI
25th Jul 2025378 PMAQI
25th Jul 2025419 PMAQI
25th Jul 20253910 PMAQI
25th Jul 20253611 PMAQI
26th Jul 20253612 AMAQI
26th Jul 2025361 AMAQI
26th Jul 2025362 AMAQI
26th Jul 2025443 AMAQI
26th Jul 2025464 AMAQI
26°C23/31°C
26th Jul 2025485 AMAQI
26th Jul 2025536 AMAQI
26th Jul 2025597 AMAQI
26th Jul 2025558 AMAQI
26th Jul 2025519 AMAQI
26th Jul 20256110 AMAQI
26th Jul 20255311 AMAQI
26th Jul 20255012 PMAQI
26th Jul 2025511 PMAQI
26th Jul 2025502 PMAQI
26th Jul 2025503 PMAQI
26th Jul 2025504 PMAQI
26th Jul 2025515 PMAQI
26th Jul 2025516 PMAQI
26th Jul 2025527 PMAQI
26th Jul 2025518 PMAQI
26th Jul 2025529 PMAQI
26th Jul 20255110 PMAQI
26th Jul 20255011 PMAQI
27th Jul 20255112 AMAQI
27th Jul 2025511 AMAQI
27th Jul 2025522 AMAQI
27th Jul 2025523 AMAQI
27th Jul 2025614 AMAQI
25°C16/33°C
27th Jul 2025575 AMAQI
27th Jul 2025576 AMAQI
27th Jul 2025567 AMAQI
27th Jul 2025548 AMAQI
27th Jul 2025619 AMAQI
27th Jul 20255710 AMAQI
27th Jul 20255711 AMAQI
27th Jul 20255612 PMAQI
27th Jul 2025561 PMAQI
27th Jul 2025572 PMAQI
27th Jul 2025563 PMAQI
27th Jul 2025574 PMAQI
27th Jul 2025585 PMAQI
27th Jul 2025576 PMAQI
27th Jul 2025587 PMAQI
27th Jul 2025598 PMAQI
27th Jul 2025569 PMAQI
27th Jul 20255610 PMAQI
27th Jul 20255611 PMAQI
28th Jul 20255512 AMAQI
28th Jul 2025561 AMAQI
28th Jul 2025562 AMAQI
28th Jul 2025533 AMAQI
28th Jul 2025544 AMAQI
24°C19/32°C
28th Jul 2025575 AMAQI
28th Jul 2025586 AMAQI
28th Jul 2025587 AMAQI
28th Jul 2025608 AMAQI
28th Jul 2025609 AMAQI
28th Jul 20256010 AMAQI
28th Jul 20255811 AMAQI
28th Jul 20255812 PMAQI
28th Jul 2025581 PMAQI
28th Jul 2025592 PMAQI
28th Jul 2025593 PMAQI
28th Jul 2025574 PMAQI
28th Jul 2025575 PMAQI
28th Jul 2025576 PMAQI
28th Jul 2025587 PMAQI
28th Jul 2025578 PMAQI
28th Jul 2025589 PMAQI
28th Jul 20255810 PMAQI
28th Jul 20255711 PMAQI
29th Jul 20255712 AMAQI
29th Jul 2025571 AMAQI
29th Jul 2025572 AMAQI
29th Jul 2025603 AMAQI
29th Jul 2025604 AMAQI
27°C21/34°C
29th Jul 2025595 AMAQI
29th Jul 2025576 AMAQI
29th Jul 2025587 AMAQI
29th Jul 2025588 AMAQI
29th Jul 2025589 AMAQI
29th Jul 20255610 AMAQI
29th Jul 20255311 AMAQI
29th Jul 20255012 PMAQI
29th Jul 2025461 PMAQI
29th Jul 2025442 PMAQI
29th Jul 2025443 PMAQI
29th Jul 2025474 PMAQI
29th Jul 2025525 PMAQI
29th Jul 2025536 PMAQI
29th Jul 2025547 PMAQI
29th Jul 2025568 PMAQI
29th Jul 2025579 PMAQI
29th Jul 20255810 PMAQI
29th Jul 20255811 PMAQI
30th Jul 20255912 AMAQI
30th Jul 2025591 AMAQI
30th Jul 2025582 AMAQI
30th Jul 2025583 AMAQI
30th Jul 2025614 AMAQI
25°C22/29°C
30th Jul 2025635 AMAQI
30th Jul 2025636 AMAQI
30th Jul 2025627 AMAQI
30th Jul 2025638 AMAQI
30th Jul 2025629 AMAQI
30th Jul 20256210 AMAQI
30th Jul 20256311 AMAQI
30th Jul 20256412 PMAQI
30th Jul 2025661 PMAQI
30th Jul 2025652 PMAQI
30th Jul 2025663 PMAQI
30th Jul 2025664 PMAQI
30th Jul 2025665 PMAQI
30th Jul 2025666 PMAQI
30th Jul 2025667 PMAQI
30th Jul 2025668 PMAQI
30th Jul 2025669 PMAQI
30th Jul 20256610 PMAQI
30th Jul 20256111 PMAQI
31st Jul 20256012 AMAQI
31st Jul 2025601 AMAQI
31st Jul 2025602 AMAQI
31st Jul 2025613 AMAQI
31st Jul 2025614 AMAQI
24°C20/30°C
31st Jul 2025675 AMAQI
31st Jul 2025636 AMAQI
31st Jul 2025557 AMAQI
31st Jul 2025518 AMAQI
31st Jul 2025489 AMAQI
31st Jul 20254410 AMAQI
31st Jul 20254011 AMAQI
31st Jul 20253412 PMAQI
31st Jul 2025341 PMAQI
31st Jul 2025332 PMAQI
31st Jul 2025383 PMAQI
31st Jul 2025364 PMAQI
31st Jul 2025345 PMAQI
31st Jul 2025336 PMAQI
31st Jul 2025337 PMAQI
31st Jul 2025348 PMAQI
31st Jul 2025469 PMAQI
31st Jul 20253810 PMAQI
31st Jul 20253211 PMAQI
1st Aug 20253212 AMAQI
1st Aug 2025341 AMAQI
1st Aug 2025322 AMAQI
1st Aug 2025343 AMAQI
1st Aug 2025314 AMAQI
20°C16/24°C
1st Aug 2025295 AMAQI
1st Aug 2025266 AMAQI
1st Aug 2025227 AMAQI
1st Aug 2025208 AMAQI
1st Aug 2025189 AMAQI
1st Aug 20251910 AMAQI
1st Aug 20252011 AMAQI
1st Aug 20251912 PMAQI
1st Aug 2025181 PMAQI
1st Aug 2025192 PMAQI
1st Aug 2025203 PMAQI
1st Aug 2025174 PMAQI
1st Aug 2025195 PMAQI
1st Aug 2025186 PMAQI
1st Aug 2025187 PMAQI
1st Aug 2025168 PMAQI
1st Aug 2025209 PMAQI
1st Aug 20252110 PMAQI
1st Aug 20252211 PMAQI
2nd Aug 20252412 AMAQI
2nd Aug 2025281 AMAQI
2nd Aug 2025292 AMAQI
2nd Aug 2025303 AMAQI
2nd Aug 2025284 AMAQI
19°C12/26°C
2nd Aug 2025285 AMAQI
2nd Aug 2025286 AMAQI
2nd Aug 2025277 AMAQI
2nd Aug 2025248 AMAQI
2nd Aug 2025249 AMAQI
2nd Aug 20252410 AMAQI
2nd Aug 20252311 AMAQI
2nd Aug 20252212 PMAQI
2nd Aug 2025241 PMAQI
2nd Aug 2025262 PMAQI
2nd Aug 2025313 PMAQI
2nd Aug 2025384 PMAQI
2nd Aug 2025545 PMAQI
2nd Aug 2025616 PMAQI
2nd Aug 2025507 PMAQI
2nd Aug 2025298 PMAQI
2nd Aug 2025309 PMAQI
2nd Aug 20253210 PMAQI
2nd Aug 20253911 PMAQI
3rd Aug 20254512 AMAQI
3rd Aug 2025401 AMAQI
3rd Aug 2025452 AMAQI
3rd Aug 2025523 AMAQI
3rd Aug 2025454 AMAQI
21°C13/27°C
3rd Aug 2025445 AMAQI
3rd Aug 2025466 AMAQI
3rd Aug 2025447 AMAQI
3rd Aug 2025408 AMAQI
3rd Aug 2025409 AMAQI
3rd Aug 20254710 AMAQI
3rd Aug 20255711 AMAQI
3rd Aug 20256012 PMAQI
3rd Aug 2025671 PMAQI
3rd Aug 2025692 PMAQI
3rd Aug 2025683 PMAQI
3rd Aug 2025684 PMAQI
3rd Aug 2025705 PMAQI
3rd Aug 2025696 PMAQI
3rd Aug 2025667 PMAQI
3rd Aug 2025678 PMAQI
3rd Aug 2025559 PMAQI
3rd Aug 20256010 PMAQI
3rd Aug 20255911 PMAQI
4th Aug 20255712 AMAQI
4th Aug 2025581 AMAQI
4th Aug 2025572 AMAQI
4th Aug 2025563 AMAQI
4th Aug 2025504 AMAQI
24°C16/30°C
4th Aug 2025585 AMAQI
4th Aug 2025626 AMAQI
4th Aug 2025647 AMAQI
4th Aug 2025668 AMAQI
4th Aug 2025679 AMAQI
4th Aug 20257510 AMAQI
4th Aug 20257911 AMAQI
4th Aug 20258312 PMAQI
4th Aug 20251081 PMAQI
4th Aug 20251262 PMAQI
4th Aug 20251283 PMAQI
4th Aug 20251154 PMAQI
4th Aug 20251045 PMAQI
4th Aug 20251066 PMAQI
4th Aug 2025977 PMAQI
4th Aug 2025958 PMAQI
4th Aug 2025729 PMAQI
4th Aug 20258010 PMAQI
4th Aug 20257811 PMAQI
5th Aug 20257612 AMAQI
5th Aug 2025681 AMAQI
5th Aug 2025602 AMAQI
5th Aug 2025523 AMAQI
5th Aug 2025484 AMAQI
23°C17/28°C
5th Aug 2025445 AMAQI
5th Aug 2025396 AMAQI
5th Aug 2025387 AMAQI
5th Aug 2025358 AMAQI
5th Aug 2025329 AMAQI
5th Aug 20253110 AMAQI
5th Aug 20253411 AMAQI
5th Aug 20253612 PMAQI
5th Aug 2025351 PMAQI
5th Aug 2025352 PMAQI
5th Aug 2025333 PMAQI
5th Aug 2025344 PMAQI
5th Aug 2025335 PMAQI
5th Aug 2025346 PMAQI
5th Aug 2025337 PMAQI
5th Aug 2025318 PMAQI
5th Aug 2025359 PMAQI
5th Aug 20253210 PMAQI
5th Aug 20253211 PMAQI
6th Aug 20253512 AMAQI
6th Aug 2025351 AMAQI
6th Aug 2025322 AMAQI
6th Aug 2025323 AMAQI
6th Aug 2025304 AMAQI
21°C13/28°C
6th Aug 2025305 AMAQI
5 AM6th Aug 2025296 AMAQI
6th Aug 2025317 AMAQI
6th Aug 2025308 AMAQI
6th Aug 2025309 AMAQI
6th Aug 20253210 AMAQI
6th Aug 20253511 AMAQI
6th Aug 20253712 PMAQI
12 PM6th Aug 2025371 PMAQI
6th Aug 2025372 PMAQI
6th Aug 2025373 PMAQI
6th Aug 2025354 PMAQI
6th Aug 2025375 PMAQI
6th Aug 2025386 PMAQI
6th Aug 2025407 PMAQI
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 PM
43AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
5 AM - 8 PM
43AQI
16 hours / Day
480 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 PM (Avg. 43), while the lowest AQI was between 5 AM to 8 PM (Avg. 43).
Night time
Avg. Highest Time
12 AM - 11 PM
42AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
42AQI
8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 42), while the lowest AQI was between 12 AM to 11 PM (Avg. 42).
2025 Days Vs Air Quality
Westmount, Quebec, Canada
2025
88%
192
12%
25
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Good
192 DaysModerate
25 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 218 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Westmount, Quebec, Canada
AQI levels in 2025
AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
1st January 2025
30AQI
30AQI
2nd January 2025
22AQI
22AQI
3rd January 2025
20AQI
20AQI
4th January 2025
21AQI
21AQI
5th January 2025
21AQI
21AQI
6th January 2025
26AQI
26AQI
7th January 2025
23AQI
23AQI
8th January 2025
21AQI
21AQI
9th January 2025
21AQI
21AQI
10th January 2025
23AQI
23AQI
11th January 2025
39AQI
39AQI
12th January 2025
32AQI
32AQI
13th January 2025
60AQI
60AQI
14th January 2025
36AQI
36AQI
15th January 2025
27AQI
27AQI
16th January 2025
34AQI
34AQI
17th January 2025
64AQI
64AQI
18th January 2025
44AQI
44AQI
19th January 2025
24AQI
24AQI
20th January 2025
23AQI
23AQI
21st January 2025
39AQI
39AQI
22nd January 2025
42AQI
42AQI
23rd January 2025
42AQI
42AQI
24th January 2025
45AQI
45AQI
25th January 2025
48AQI
48AQI
26th January 2025
38AQI
38AQI
27th January 2025
27AQI
27AQI
28th January 2025
26AQI
26AQI
29th January 2025
29AQI
29AQI
30th January 2025
23AQI
23AQI
31st January 2025
47AQI
47AQI
1st February 2025
21AQI
21AQI
2nd February 2025
39AQI
39AQI
3rd February 2025
58AQI
58AQI
4th February 2025
30AQI
30AQI
5th February 2025
23AQI
23AQI
6th February 2025
40AQI
40AQI
7th February 2025
42AQI
42AQI
8th February 2025
46AQI
46AQI
9th February 2025
43AQI
43AQI
10th February 2025
28AQI
28AQI
11th February 2025
29AQI
29AQI
12th February 2025
29AQI
29AQI
13th February 2025
26AQI
26AQI
14th February 2025
21AQI
21AQI
15th February 2025
23AQI
23AQI
16th February 2025
24AQI
24AQI
17th February 2025
21AQI
21AQI
18th February 2025
21AQI
21AQI
19th February 2025
20AQI
20AQI
20th February 2025
23AQI
23AQI
21st February 2025
21AQI
21AQI
22nd February 2025
27AQI
27AQI
23rd February 2025
53AQI
53AQI
24th February 2025
49AQI
49AQI
25th February 2025
55AQI
55AQI
26th February 2025
58AQI
58AQI
27th February 2025
58AQI
58AQI
28th February 2025
28AQI
28AQI
1st March 2025
24AQI
24AQI
2nd March 2025
22AQI
22AQI
3rd March 2025
36AQI
36AQI
4th March 2025
36AQI
36AQI
5th March 2025
56AQI
56AQI
6th March 2025
21AQI
21AQI
7th March 2025
22AQI
22AQI
8th March 2025
24AQI
24AQI
9th March 2025
24AQI
24AQI
10th March 2025
26AQI
26AQI
11th March 2025
36AQI
36AQI
12th March 2025
23AQI
23AQI
13th March 2025
40AQI
40AQI
14th March 2025
85AQI
85AQI
15th March 2025
73AQI
73AQI
16th March 2025
64AQI
64AQI
17th March 2025
29AQI
29AQI
18th March 2025
29AQI
29AQI
19th March 2025
38AQI
38AQI
20th March 2025
29AQI
29AQI
21st March 2025
24AQI
24AQI
22nd March 2025
29AQI
29AQI
23rd March 2025
24AQI
24AQI
24th March 2025
24AQI
24AQI
25th March 2025
25AQI
25AQI
26th March 2025
22AQI
22AQI
27th March 2025
22AQI
22AQI
28th March 2025
23AQI
23AQI
29th March 2025
24AQI
24AQI
30th March 2025
26AQI
26AQI
31st March 2025
34AQI
34AQI
1st April 2025
20AQI
20AQI
2nd April 2025
20AQI
20AQI
3rd April 2025
21AQI
21AQI
4th April 2025
20AQI
20AQI
5th April 2025
21AQI
21AQI
6th April 2025
18AQI
18AQI
7th April 2025
21AQI
21AQI
8th April 2025
21AQI
21AQI
9th April 2025
19AQI
19AQI
10th April 2025
28AQI
28AQI
11th April 2025
33AQI
33AQI
12th April 2025
39AQI
39AQI
13th April 2025
27AQI
27AQI
14th April 2025
33AQI
33AQI
15th April 2025
27AQI
27AQI
16th April 2025
15AQI
15AQI
17th April 2025
18AQI
18AQI
18th April 2025
26AQI
26AQI
19th April 2025
37AQI
37AQI
20th April 2025
17AQI
17AQI
21st April 2025
22AQI
22AQI
22nd April 2025
24AQI
24AQI
23rd April 2025
19AQI
19AQI
24th April 2025
22AQI
22AQI
25th April 2025
23AQI
23AQI
26th April 2025
26AQI
26AQI
27th April 2025
14AQI
14AQI
28th April 2025
23AQI
23AQI
29th April 2025
31AQI
31AQI
30th April 2025
20AQI
20AQI
1st May 2025
20AQI
20AQI
2nd May 2025
25AQI
25AQI
3rd May 2025
16AQI
16AQI
4th May 2025
31AQI
31AQI
5th May 2025
23AQI
23AQI
6th May 2025
21AQI
21AQI
7th May 2025
17AQI
17AQI
8th May 2025
17AQI
17AQI
9th May 2025
18AQI
18AQI
10th May 2025
24AQI
24AQI
11th May 2025
17AQI
17AQI
12th May 2025
24AQI
24AQI
13th May 2025
35AQI
35AQI
14th May 2025
37AQI
37AQI
15th May 2025
30AQI
30AQI
16th May 2025
36AQI
36AQI
17th May 2025
42AQI
42AQI
18th May 2025
26AQI
26AQI
19th May 2025
18AQI
18AQI
20th May 2025
16AQI
16AQI
21st May 2025
18AQI
18AQI
22nd May 2025
15AQI
15AQI
23rd May 2025
15AQI
15AQI
24th May 2025
15AQI
15AQI
25th May 2025
16AQI
16AQI
26th May 2025
25AQI
25AQI
27th May 2025
28AQI
28AQI
28th May 2025
34AQI
34AQI
29th May 2025
34AQI
34AQI
30th May 2025
26AQI
26AQI
31st May 2025
32AQI
32AQI
1st June 2025
19AQI
19AQI
2nd June 2025
22AQI
22AQI
3rd June 2025
28AQI
28AQI
4th June 2025
41AQI
41AQI
5th June 2025
45AQI
45AQI
6th June 2025
53AQI
53AQI
7th June 2025
58AQI
58AQI
8th June 2025
58AQI
58AQI
9th June 2025
59AQI
59AQI
10th June 2025
45AQI
45AQI
11th June 2025
51AQI
51AQI
12th June 2025
56AQI
56AQI
13th June 2025
28AQI
28AQI
14th June 2025
28AQI
28AQI
15th June 2025
32AQI
32AQI
16th June 2025
42AQI
42AQI
17th June 2025
42AQI
42AQI
18th June 2025
25AQI
25AQI
19th June 2025
38AQI
38AQI
20th June 2025
23AQI
23AQI
21st June 2025
29AQI
29AQI
22nd June 2025
30AQI
30AQI
23rd June 2025
41AQI
41AQI
24th June 2025
51AQI
51AQI
25th June 2025
46AQI
46AQI
26th June 2025
30AQI
30AQI
27th June 2025
31AQI
31AQI
28th June 2025
28AQI
28AQI
29th June 2025
28AQI
28AQI
30th June 2025
31AQI
31AQI
1st July 2025
34AQI
34AQI
2nd July 2025
31AQI
31AQI
3rd July 2025
36AQI
36AQI
4th July 2025
24AQI
24AQI
5th July 2025
27AQI
27AQI
6th July 2025
40AQI
40AQI
7th July 2025
43AQI
43AQI
8th July 2025
33AQI
33AQI
9th July 2025
42AQI
42AQI
10th July 2025
45AQI
45AQI
11th July 2025
47AQI
47AQI
12th July 2025
51AQI
51AQI
13th July 2025
42AQI
42AQI
14th July 2025
40AQI
40AQI
15th July 2025
39AQI
39AQI
16th July 2025
49AQI
49AQI
17th July 2025
48AQI
48AQI
18th July 2025
22AQI
22AQI
19th July 2025
33AQI
33AQI
20th July 2025
38AQI
38AQI
21st July 2025
31AQI
31AQI
22nd July 2025
20AQI
20AQI
23rd July 2025
25AQI
25AQI
24th July 2025
31AQI
31AQI
25th July 2025
37AQI
37AQI
26th July 2025
49AQI
49AQI
27th July 2025
56AQI
56AQI
28th July 2025
57AQI
57AQI
29th July 2025
55AQI
55AQI
30th July 2025
63AQI
63AQI
31st July 2025
46AQI
46AQI
1st August 2025
23AQI
23AQI
2nd August 2025
32AQI
32AQI
3rd August 2025
55AQI
55AQI
4th August 2025
80AQI
80AQI
5th August 2025
42AQI
42AQI
33AQI
34AQI
33AQI
24AQI
24AQI
38AQI
40AQI
46AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202532AQI
29
2
23
5
27
4
30
31
23
7
26
5
3
2
192
25
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
April24AQI
202430AQI
27
2
22
6
27
2
29
26
26
3
27
4
22
9
23
6
31
30
26
5
316
37
Highest AQI recorded in
August37AQI
Lowest AQI recorded in
May24AQI
202334AQI
22
3
21
2
22
2
25
3
28
2
12
6
2
24
6
1
27
1
9
5
20
2
25
1
24
6
259
39
3
Highest AQI recorded in
June48AQI
Lowest AQI recorded in
November28AQI
202231AQI
22
8
19
2
26
4
26
28
1
28
1
20
1
2
29
27
3
27
3
25
5
279
28
Highest AQI recorded in
January41AQI
Lowest AQI recorded in
September24AQI
202131AQI
24
6
20
7
27
3
28
1
27
2
1
28
1
1
25
4
1
25
6
27
26
3
24
22
4
303
37
2
1
Highest AQI recorded in
August39AQI
Lowest AQI recorded in
September21AQI
202024AQI
4
16
13
1
23
2
28
29
22
2
24
1
26
4
25
1
210
11
Highest AQI recorded in
June31AQI
Lowest AQI recorded in
May18AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
34AQILeast Polluted Year Recorded
2020(Avg.)
24AQIWestmount's annual 2025 AQI (32) shows an average percentage change of 9.8% (worsened AQI) compared to previous years: 2020 (24), 2021 (31), 2022 (31), 2023 (34), 2024 (30).
