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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

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+

July Air Quality Analysis

Westmount, Quebec, Canada

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Jul 2023
104AQI
Lowest AQI recorded on
29th Jul 2023
10AQI

Same Day Analysis (21st July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 40 of Good air quality on the same day.

Day & Night AQI Trend: 21st Jul - 22nd Jul 2026

Westmount, Quebec, Canada

AQI
Day
Night
.

5 AM21st Jul 2026

8 PM

4 AM22nd Jul 2026

Day time
Avg. Highest Time
4PM21st Jul

53AQI

Avg. Lowest Time
9AM21st Jul

29AQI

Night time
Avg. Highest Time
9PM21st Jul

45AQI

Avg. Lowest Time
4AM22nd Jul

38AQI

In the last 24 hours,

Westmount's AQI reached its highest point of 53 at 4 PM during the Day, while the lowest point, 29, was recorded at 9 AM during the Day between 21st Jul and 22nd Jul 2026.

Day & Night AQI Trend : Jun - Jul 2026

Westmount, Quebec, Canada

JunJul
23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd
Day
Night
23rd Jun 2026195 AMAQI
23rd Jun 2026226 AMAQI
23rd Jun 2026117 AMAQI
23rd Jun 2026228 AMAQI
23rd Jun 2026209 AMAQI
23rd Jun 20261610 AMAQI
23rd Jun 20262811 AMAQI
23rd Jun 20262712 PMAQI
23rd Jun 2026281 PMAQI
23rd Jun 2026262 PMAQI
23rd Jun 2026263 PMAQI
23rd Jun 2026164 PMAQI
23rd Jun 2026245 PMAQI
23rd Jun 2026186 PMAQI
23rd Jun 2026247 PMAQI
23rd Jun 2026258 PMAQI
23rd Jun 2026259 PMAQI
23rd Jun 20262410 PMAQI
23rd Jun 20262411 PMAQI
24th Jun 20262212 AMAQI
24th Jun 2026231 AMAQI
24th Jun 2026242 AMAQI
24th Jun 2026243 AMAQI
24th Jun 2026204 AMAQI

20°C16/25°C

24th Jun 2026225 AMAQI
24th Jun 2026216 AMAQI
24th Jun 2026207 AMAQI
24th Jun 2026208 AMAQI
24th Jun 2026229 AMAQI
24th Jun 20262110 AMAQI
24th Jun 20262511 AMAQI
24th Jun 20262612 PMAQI
24th Jun 2026261 PMAQI
24th Jun 2026262 PMAQI
24th Jun 2026253 PMAQI
24th Jun 2026204 PMAQI
24th Jun 2026235 PMAQI
24th Jun 2026246 PMAQI
24th Jun 2026247 PMAQI
24th Jun 2026258 PMAQI
24th Jun 2026199 PMAQI
24th Jun 20262010 PMAQI
24th Jun 20262811 PMAQI
25th Jun 20262812 AMAQI
25th Jun 2026221 AMAQI
25th Jun 2026252 AMAQI
25th Jun 2026243 AMAQI
25th Jun 2026244 AMAQI

20°C15/27°C

25th Jun 2026245 AMAQI
25th Jun 2026226 AMAQI
25th Jun 2026227 AMAQI
25th Jun 2026238 AMAQI
25th Jun 2026249 AMAQI
25th Jun 20262110 AMAQI
25th Jun 20262611 AMAQI
25th Jun 20262812 PMAQI
25th Jun 2026271 PMAQI
25th Jun 2026242 PMAQI
25th Jun 2026253 PMAQI
25th Jun 2026224 PMAQI
25th Jun 2026225 PMAQI
25th Jun 2026206 PMAQI
25th Jun 2026207 PMAQI
25th Jun 2026228 PMAQI
25th Jun 2026369 PMAQI
25th Jun 20262710 PMAQI
25th Jun 20262811 PMAQI
26th Jun 20263012 AMAQI
26th Jun 2026341 AMAQI
26th Jun 2026202 AMAQI
26th Jun 2026243 AMAQI
26th Jun 2026234 AMAQI

22°C16/30°C

26th Jun 2026245 AMAQI
26th Jun 2026236 AMAQI
26th Jun 2026207 AMAQI
26th Jun 2026178 AMAQI
26th Jun 2026219 AMAQI
26th Jun 20262710 AMAQI
26th Jun 20263111 AMAQI
26th Jun 20262012 PMAQI
26th Jun 2026231 PMAQI
26th Jun 2026282 PMAQI
26th Jun 2026293 PMAQI
26th Jun 2026294 PMAQI
26th Jun 2026255 PMAQI
26th Jun 2026276 PMAQI
26th Jun 2026197 PMAQI
26th Jun 2026308 PMAQI
26th Jun 2026309 PMAQI
26th Jun 20263210 PMAQI
26th Jun 20262411 PMAQI
27th Jun 20262612 AMAQI
27th Jun 2026241 AMAQI
27th Jun 2026282 AMAQI
27th Jun 2026293 AMAQI
27th Jun 2026284 AMAQI

19°C17/23°C

27th Jun 2026275 AMAQI
27th Jun 2026296 AMAQI
27th Jun 2026287 AMAQI
27th Jun 2026288 AMAQI
27th Jun 2026299 AMAQI
27th Jun 20263210 AMAQI
27th Jun 20263011 AMAQI
27th Jun 20262412 PMAQI
27th Jun 2026301 PMAQI
27th Jun 2026232 PMAQI
27th Jun 2026293 PMAQI
27th Jun 2026304 PMAQI
27th Jun 2026295 PMAQI
27th Jun 2026276 PMAQI
27th Jun 2026287 PMAQI
27th Jun 2026288 PMAQI
27th Jun 2026289 PMAQI
27th Jun 20261910 PMAQI
27th Jun 20262911 PMAQI
28th Jun 20262712 AMAQI
28th Jun 2026361 AMAQI
28th Jun 2026282 AMAQI
28th Jun 2026283 AMAQI
28th Jun 2026264 AMAQI

21°C15/28°C

28th Jun 2026275 AMAQI
28th Jun 2026276 AMAQI
28th Jun 2026307 AMAQI
28th Jun 2026298 AMAQI
28th Jun 2026309 AMAQI
28th Jun 20262810 AMAQI
28th Jun 20262811 AMAQI
28th Jun 20262612 PMAQI
28th Jun 2026251 PMAQI
28th Jun 2026262 PMAQI
28th Jun 2026273 PMAQI
28th Jun 2026274 PMAQI
28th Jun 2026285 PMAQI
28th Jun 2026276 PMAQI
28th Jun 2026287 PMAQI
28th Jun 2026288 PMAQI
28th Jun 2026269 PMAQI
28th Jun 20262610 PMAQI
28th Jun 20263211 PMAQI
29th Jun 20264212 AMAQI
29th Jun 2026241 AMAQI
29th Jun 2026242 AMAQI
29th Jun 2026233 AMAQI
29th Jun 2026294 AMAQI

22°C16/29°C

29th Jun 2026225 AMAQI
29th Jun 2026326 AMAQI
29th Jun 2026217 AMAQI
29th Jun 2026248 AMAQI
29th Jun 2026239 AMAQI
29th Jun 20262610 AMAQI
29th Jun 20262711 AMAQI
29th Jun 20262712 PMAQI
29th Jun 2026261 PMAQI
29th Jun 2026282 PMAQI
29th Jun 2026263 PMAQI
29th Jun 2026264 PMAQI
29th Jun 2026245 PMAQI
29th Jun 2026246 PMAQI
29th Jun 2026247 PMAQI
29th Jun 2026278 PMAQI
29th Jun 2026269 PMAQI
29th Jun 20262610 PMAQI
29th Jun 20262411 PMAQI
30th Jun 20262512 AMAQI
30th Jun 2026241 AMAQI
30th Jun 2026242 AMAQI
30th Jun 2026263 AMAQI
30th Jun 2026254 AMAQI

24°C16/32°C

30th Jun 2026245 AMAQI
30th Jun 2026256 AMAQI
30th Jun 2026247 AMAQI
30th Jun 2026268 AMAQI
30th Jun 2026259 AMAQI
30th Jun 20262710 AMAQI
30th Jun 20262811 AMAQI
30th Jun 20262812 PMAQI
30th Jun 2026261 PMAQI
30th Jun 2026282 PMAQI
30th Jun 2026283 PMAQI
30th Jun 2026274 PMAQI
30th Jun 2026265 PMAQI
30th Jun 2026296 PMAQI
30th Jun 2026287 PMAQI
30th Jun 2026278 PMAQI
30th Jun 2026289 PMAQI
30th Jun 20262310 PMAQI
30th Jun 20262411 PMAQI
1st Jul 20262212 AMAQI
1st Jul 2026271 AMAQI
1st Jul 2026242 AMAQI
1st Jul 2026283 AMAQI
1st Jul 2026264 AMAQI

24°C17/33°C

1st Jul 2026255 AMAQI
1st Jul 2026256 AMAQI
1st Jul 2026267 AMAQI
1st Jul 2026288 AMAQI
1st Jul 2026279 AMAQI
1st Jul 20262810 AMAQI
1st Jul 20262911 AMAQI
1st Jul 20263012 PMAQI
1st Jul 2026301 PMAQI
1st Jul 2026302 PMAQI
1st Jul 2026293 PMAQI
1st Jul 2026284 PMAQI
1st Jul 2026275 PMAQI
1st Jul 2026296 PMAQI
1st Jul 2026307 PMAQI
1st Jul 2026368 PMAQI
1st Jul 2026409 PMAQI
1st Jul 20262810 PMAQI
1st Jul 20262211 PMAQI
2nd Jul 20262212 AMAQI
2nd Jul 2026221 AMAQI
2nd Jul 2026242 AMAQI
2nd Jul 2026243 AMAQI
2nd Jul 2026254 AMAQI

26°C22/34°C

2nd Jul 2026225 AMAQI
2nd Jul 2026226 AMAQI
2nd Jul 2026177 AMAQI
2nd Jul 2026298 AMAQI
2nd Jul 2026289 AMAQI
2nd Jul 20262910 AMAQI
2nd Jul 20262811 AMAQI
2nd Jul 20262712 PMAQI
2nd Jul 2026261 PMAQI
2nd Jul 2026302 PMAQI
2nd Jul 2026283 PMAQI
2nd Jul 2026344 PMAQI
2nd Jul 2026355 PMAQI
2nd Jul 2026566 PMAQI
2nd Jul 2026307 PMAQI
2nd Jul 2026278 PMAQI
2nd Jul 2026339 PMAQI
2nd Jul 20264010 PMAQI
2nd Jul 20263911 PMAQI
3rd Jul 20263912 AMAQI
3rd Jul 2026291 AMAQI
3rd Jul 2026282 AMAQI
3rd Jul 2026293 AMAQI
3rd Jul 2026284 AMAQI

26°C22/33°C

3rd Jul 2026285 AMAQI
3rd Jul 2026286 AMAQI
3rd Jul 2026387 AMAQI
3rd Jul 2026298 AMAQI
3rd Jul 2026309 AMAQI
3rd Jul 20263010 AMAQI
3rd Jul 20263111 AMAQI
3rd Jul 20263212 PMAQI
3rd Jul 2026301 PMAQI
3rd Jul 2026292 PMAQI
3rd Jul 2026283 PMAQI
3rd Jul 2026304 PMAQI
3rd Jul 2026285 PMAQI
3rd Jul 2026306 PMAQI
3rd Jul 2026287 PMAQI
3rd Jul 2026268 PMAQI
3rd Jul 2026269 PMAQI
3rd Jul 20262610 PMAQI
3rd Jul 20262411 PMAQI
4th Jul 20262612 AMAQI
4th Jul 2026281 AMAQI
4th Jul 2026312 AMAQI
4th Jul 2026283 AMAQI
4th Jul 2026284 AMAQI

26°C21/31°C

4th Jul 2026255 AMAQI
4th Jul 2026306 AMAQI
4th Jul 2026287 AMAQI
4th Jul 2026288 AMAQI
4th Jul 2026319 AMAQI
4th Jul 20262610 AMAQI
4th Jul 20263011 AMAQI
4th Jul 20262812 PMAQI
4th Jul 2026241 PMAQI
4th Jul 2026262 PMAQI
4th Jul 2026263 PMAQI
4th Jul 2026264 PMAQI
4th Jul 2026255 PMAQI
4th Jul 2026266 PMAQI
4th Jul 2026247 PMAQI
4th Jul 2026208 PMAQI
4th Jul 2026229 PMAQI
4th Jul 20262010 PMAQI
4th Jul 20262311 PMAQI
5th Jul 20262012 AMAQI
5th Jul 2026241 AMAQI
5th Jul 2026282 AMAQI
5th Jul 2026263 AMAQI
5th Jul 2026394 AMAQI

24°C20/30°C

5th Jul 2026415 AMAQI
5th Jul 2026266 AMAQI
5th Jul 2026247 AMAQI
5th Jul 2026258 AMAQI
5th Jul 2026249 AMAQI
5th Jul 20262610 AMAQI
5th Jul 20262911 AMAQI
5th Jul 20262912 PMAQI
5th Jul 2026301 PMAQI
5th Jul 2026302 PMAQI
5th Jul 2026253 PMAQI
5th Jul 2026264 PMAQI
5th Jul 2026285 PMAQI
5th Jul 2026286 PMAQI
5th Jul 2026287 PMAQI
5th Jul 2026218 PMAQI
5th Jul 2026239 PMAQI
5th Jul 20262010 PMAQI
5th Jul 20262011 PMAQI
6th Jul 20262012 AMAQI
6th Jul 2026261 AMAQI
6th Jul 2026362 AMAQI
6th Jul 2026263 AMAQI
6th Jul 2026244 AMAQI

22°C16/30°C

6th Jul 2026205 AMAQI
6th Jul 2026246 AMAQI
6th Jul 2026277 AMAQI
6th Jul 2026278 AMAQI
6th Jul 2026289 AMAQI
6th Jul 20262910 AMAQI
6th Jul 20263111 AMAQI
6th Jul 20263212 PMAQI
6th Jul 2026311 PMAQI
6th Jul 2026322 PMAQI
6th Jul 2026323 PMAQI
6th Jul 2026364 PMAQI
6th Jul 2026385 PMAQI
6th Jul 2026346 PMAQI
6th Jul 2026367 PMAQI
6th Jul 2026348 PMAQI
6th Jul 2026279 PMAQI
6th Jul 20262510 PMAQI
6th Jul 20262611 PMAQI
7th Jul 20262412 AMAQI
7th Jul 2026281 AMAQI
7th Jul 2026302 AMAQI
7th Jul 2026503 AMAQI
7th Jul 2026324 AMAQI

24°C16/32°C

7th Jul 2026305 AMAQI
7th Jul 2026306 AMAQI
7th Jul 2026297 AMAQI
7th Jul 2026278 AMAQI
7th Jul 2026299 AMAQI
7th Jul 20263010 AMAQI
7th Jul 20263211 AMAQI
7th Jul 20263212 PMAQI
7th Jul 2026321 PMAQI
7th Jul 2026322 PMAQI
7th Jul 2026293 PMAQI
7th Jul 2026304 PMAQI
7th Jul 2026315 PMAQI
7th Jul 2026306 PMAQI
7th Jul 2026307 PMAQI
7th Jul 2026298 PMAQI
7th Jul 2026279 PMAQI
7th Jul 20262810 PMAQI
7th Jul 20262811 PMAQI
8th Jul 20262412 AMAQI
8th Jul 2026261 AMAQI
8th Jul 2026282 AMAQI
8th Jul 2026303 AMAQI
8th Jul 2026264 AMAQI

25°C19/32°C

8th Jul 2026255 AMAQI
8th Jul 2026216 AMAQI
8th Jul 2026227 AMAQI
8th Jul 2026228 AMAQI
8th Jul 2026259 AMAQI
8th Jul 20262710 AMAQI
8th Jul 20263011 AMAQI
8th Jul 20263212 PMAQI
8th Jul 2026311 PMAQI
8th Jul 2026302 PMAQI
8th Jul 2026283 PMAQI
8th Jul 2026304 PMAQI
8th Jul 2026295 PMAQI
8th Jul 2026296 PMAQI
8th Jul 2026277 PMAQI
8th Jul 2026268 PMAQI
8th Jul 2026259 PMAQI
8th Jul 20262610 PMAQI
8th Jul 20262711 PMAQI
9th Jul 20262912 AMAQI
9th Jul 2026251 AMAQI
9th Jul 2026262 AMAQI
9th Jul 2026323 AMAQI
9th Jul 2026274 AMAQI

25°C18/34°C

9th Jul 2026275 AMAQI
9th Jul 2026256 AMAQI
9th Jul 2026267 AMAQI
9th Jul 2026278 AMAQI
9th Jul 2026299 AMAQI
9th Jul 20263010 AMAQI
9th Jul 20263011 AMAQI
9th Jul 20263212 PMAQI
9th Jul 2026311 PMAQI
9th Jul 2026302 PMAQI
9th Jul 2026293 PMAQI
9th Jul 2026304 PMAQI
9th Jul 2026325 PMAQI
9th Jul 2026306 PMAQI
9th Jul 2026307 PMAQI
9th Jul 2026318 PMAQI
9th Jul 2026319 PMAQI
9th Jul 20263010 PMAQI
9th Jul 20263011 PMAQI
10th Jul 20262412 AMAQI
10th Jul 2026291 AMAQI
10th Jul 2026282 AMAQI
10th Jul 2026263 AMAQI
10th Jul 2026324 AMAQI

23°C20/29°C

10th Jul 2026325 AMAQI
10th Jul 2026326 AMAQI
10th Jul 2026327 AMAQI
10th Jul 2026338 AMAQI
10th Jul 2026349 AMAQI
10th Jul 20263810 AMAQI
10th Jul 20263611 AMAQI
10th Jul 20263612 PMAQI
10th Jul 2026361 PMAQI
10th Jul 2026342 PMAQI
10th Jul 2026303 PMAQI
10th Jul 2026364 PMAQI
10th Jul 2026345 PMAQI
10th Jul 2026376 PMAQI
10th Jul 2026377 PMAQI
10th Jul 2026408 PMAQI
10th Jul 2026369 PMAQI
10th Jul 20263010 PMAQI
10th Jul 20263011 PMAQI
11th Jul 20262712 AMAQI
11th Jul 2026271 AMAQI
11th Jul 2026242 AMAQI
11th Jul 2026303 AMAQI
11th Jul 2026324 AMAQI

23°C18/29°C

11th Jul 2026325 AMAQI
11th Jul 2026326 AMAQI
11th Jul 2026307 AMAQI
11th Jul 2026348 AMAQI
11th Jul 2026329 AMAQI
11th Jul 20263210 AMAQI
11th Jul 20263211 AMAQI
11th Jul 20263412 PMAQI
11th Jul 2026331 PMAQI
11th Jul 2026322 PMAQI
11th Jul 2026293 PMAQI
11th Jul 2026324 PMAQI
11th Jul 2026325 PMAQI
11th Jul 2026326 PMAQI
11th Jul 2026327 PMAQI
11th Jul 2026328 PMAQI
11th Jul 2026329 PMAQI
11th Jul 20262810 PMAQI
11th Jul 20262811 PMAQI
12th Jul 20262812 AMAQI
12th Jul 2026221 AMAQI
12th Jul 2026232 AMAQI
12th Jul 2026273 AMAQI
12th Jul 2026584 AMAQI

22°C15/29°C

12th Jul 2026305 AMAQI
12th Jul 2026316 AMAQI
12th Jul 2026307 AMAQI
12th Jul 2026408 AMAQI
12th Jul 2026609 AMAQI
12th Jul 20263110 AMAQI
12th Jul 20265911 AMAQI
12th Jul 20263312 PMAQI
12th Jul 2026241 PMAQI
12th Jul 2026322 PMAQI
12th Jul 2026283 PMAQI
12th Jul 2026434 PMAQI
12th Jul 2026395 PMAQI
12th Jul 2026306 PMAQI
12th Jul 2026237 PMAQI
12th Jul 2026308 PMAQI
12th Jul 2026309 PMAQI
12th Jul 20262810 PMAQI
12th Jul 20262611 PMAQI
13th Jul 20262212 AMAQI
13th Jul 2026221 AMAQI
13th Jul 2026232 AMAQI
13th Jul 2026323 AMAQI
13th Jul 2026424 AMAQI

23°C16/32°C

13th Jul 2026335 AMAQI
13th Jul 2026326 AMAQI
13th Jul 2026337 AMAQI
13th Jul 2026328 AMAQI
13th Jul 2026419 AMAQI
13th Jul 20264810 AMAQI
13th Jul 20264811 AMAQI
13th Jul 20264612 PMAQI
13th Jul 2026291 PMAQI
13th Jul 2026322 PMAQI
13th Jul 2026303 PMAQI
13th Jul 2026324 PMAQI
13th Jul 2026325 PMAQI
13th Jul 2026316 PMAQI
13th Jul 2026287 PMAQI
13th Jul 2026348 PMAQI
13th Jul 2026339 PMAQI
13th Jul 20263410 PMAQI
13th Jul 20262511 PMAQI
14th Jul 20262212 AMAQI
14th Jul 2026221 AMAQI
14th Jul 2026342 AMAQI
14th Jul 2026333 AMAQI
14th Jul 2026364 AMAQI

24°C17/30°C

14th Jul 2026345 AMAQI
14th Jul 2026326 AMAQI
14th Jul 2026337 AMAQI
14th Jul 2026348 AMAQI
14th Jul 2026389 AMAQI
14th Jul 20263710 AMAQI
14th Jul 20264011 AMAQI
14th Jul 20263912 PMAQI
14th Jul 2026351 PMAQI
14th Jul 2026362 PMAQI
14th Jul 2026323 PMAQI
14th Jul 2026334 PMAQI
14th Jul 2026285 PMAQI
14th Jul 2026326 PMAQI
14th Jul 2026327 PMAQI
14th Jul 2026558 PMAQI
14th Jul 2026569 PMAQI
14th Jul 20262710 PMAQI
14th Jul 20262511 PMAQI
15th Jul 20262412 AMAQI
15th Jul 2026271 AMAQI
15th Jul 2026662 AMAQI
15th Jul 2026543 AMAQI
15th Jul 2026644 AMAQI

26°C20/35°C

15th Jul 2026575 AMAQI
15th Jul 2026526 AMAQI
15th Jul 2026477 AMAQI
15th Jul 2026448 AMAQI
15th Jul 2026449 AMAQI
15th Jul 20266010 AMAQI
15th Jul 20264211 AMAQI
15th Jul 20264112 PMAQI
15th Jul 2026421 PMAQI
15th Jul 2026472 PMAQI
15th Jul 2026483 PMAQI
15th Jul 2026324 PMAQI
15th Jul 2026345 PMAQI
15th Jul 2026296 PMAQI
15th Jul 2026297 PMAQI
15th Jul 2026318 PMAQI
15th Jul 2026319 PMAQI
15th Jul 20263010 PMAQI
15th Jul 20262811 PMAQI
16th Jul 20263412 AMAQI
16th Jul 2026361 AMAQI
16th Jul 2026542 AMAQI
16th Jul 2026263 AMAQI
16th Jul 2026284 AMAQI

24°C20/29°C

16th Jul 2026305 AMAQI
16th Jul 2026326 AMAQI
16th Jul 2026507 AMAQI
16th Jul 2026538 AMAQI
16th Jul 2026569 AMAQI
16th Jul 20266210 AMAQI
16th Jul 20266111 AMAQI
16th Jul 20263012 PMAQI
16th Jul 2026561 PMAQI
16th Jul 2026312 PMAQI
16th Jul 2026383 PMAQI
16th Jul 2026314 PMAQI
16th Jul 2026305 PMAQI
16th Jul 2026286 PMAQI
16th Jul 2026277 PMAQI
16th Jul 2026288 PMAQI
16th Jul 2026319 PMAQI
16th Jul 20262810 PMAQI
16th Jul 20262711 PMAQI
17th Jul 20262612 AMAQI
17th Jul 2026251 AMAQI
17th Jul 2026242 AMAQI
17th Jul 2026273 AMAQI
17th Jul 2026364 AMAQI

21°C16/28°C

17th Jul 2026365 AMAQI
17th Jul 2026446 AMAQI
17th Jul 2026487 AMAQI
17th Jul 2026478 AMAQI
17th Jul 2026299 AMAQI
17th Jul 20262810 AMAQI
17th Jul 20264311 AMAQI
17th Jul 20263712 PMAQI
17th Jul 2026461 PMAQI
17th Jul 2026352 PMAQI
17th Jul 2026403 PMAQI
17th Jul 2026304 PMAQI
17th Jul 2026205 PMAQI
17th Jul 2026206 PMAQI
17th Jul 2026287 PMAQI
17th Jul 2026268 PMAQI
17th Jul 2026409 PMAQI
17th Jul 20263610 PMAQI
17th Jul 20265011 PMAQI
18th Jul 20262812 AMAQI
18th Jul 2026501 AMAQI
18th Jul 2026492 AMAQI
18th Jul 2026343 AMAQI
18th Jul 2026544 AMAQI

20°C13/28°C

18th Jul 2026445 AMAQI
18th Jul 2026346 AMAQI
18th Jul 2026387 AMAQI
18th Jul 2026318 AMAQI
18th Jul 2026379 AMAQI
18th Jul 20262210 AMAQI
18th Jul 20263011 AMAQI
18th Jul 20262412 PMAQI
18th Jul 2026361 PMAQI
18th Jul 2026302 PMAQI
18th Jul 2026453 PMAQI
18th Jul 2026424 PMAQI
18th Jul 2026605 PMAQI
18th Jul 2026646 PMAQI
18th Jul 2026617 PMAQI
18th Jul 2026638 PMAQI
18th Jul 2026699 PMAQI
18th Jul 20267110 PMAQI
18th Jul 20267811 PMAQI
19th Jul 20266612 AMAQI
19th Jul 2026601 AMAQI
19th Jul 2026412 AMAQI
19th Jul 2026473 AMAQI
19th Jul 2026374 AMAQI

19°C16/22°C

19th Jul 2026385 AMAQI
19th Jul 2026446 AMAQI
19th Jul 2026327 AMAQI
19th Jul 2026488 AMAQI
19th Jul 2026409 AMAQI
19th Jul 20263010 AMAQI
19th Jul 20262811 AMAQI
19th Jul 20264412 PMAQI
19th Jul 2026351 PMAQI
19th Jul 2026632 PMAQI
19th Jul 2026723 PMAQI
19th Jul 2026484 PMAQI
19th Jul 2026515 PMAQI
19th Jul 2026366 PMAQI
19th Jul 2026247 PMAQI
19th Jul 2026268 PMAQI
19th Jul 2026259 PMAQI
19th Jul 20262410 PMAQI
19th Jul 20262211 PMAQI
20th Jul 20266412 AMAQI
20th Jul 2026421 AMAQI
20th Jul 2026692 AMAQI
20th Jul 2026633 AMAQI
20th Jul 2026654 AMAQI

19°C14/24°C

20th Jul 2026415 AMAQI
20th Jul 2026546 AMAQI
20th Jul 2026457 AMAQI
20th Jul 2026248 AMAQI
20th Jul 2026289 AMAQI
20th Jul 20262610 AMAQI
20th Jul 20262611 AMAQI
20th Jul 20262912 PMAQI
20th Jul 2026221 PMAQI
20th Jul 2026402 PMAQI
20th Jul 2026343 PMAQI
20th Jul 2026254 PMAQI
20th Jul 2026245 PMAQI
20th Jul 2026306 PMAQI
20th Jul 2026257 PMAQI
20th Jul 2026348 PMAQI
20th Jul 2026389 PMAQI
20th Jul 20263710 PMAQI
21st Jul 20263212 AMAQI
21st Jul 2026321 AMAQI
21st Jul 2026212 AMAQI
21st Jul 2026343 AMAQI
21st Jul 2026324 AMAQI

21°C14/28°C

21st Jul 2026465 AMAQI
21st Jul 2026406 AMAQI
21st Jul 2026467 AMAQI
21st Jul 2026338 AMAQI
21st Jul 2026299 AMAQI
21st Jul 20263810 AMAQI
21st Jul 20264111 AMAQI
21st Jul 20263212 PMAQI
21st Jul 2026471 PMAQI
21st Jul 2026502 PMAQI
21st Jul 2026523 PMAQI
21st Jul 2026534 PMAQI
21st Jul 2026495 PMAQI
21st Jul 2026486 PMAQI
21st Jul 2026447 PMAQI
21st Jul 2026458 PMAQI
21st Jul 2026459 PMAQI
21st Jul 20264210 PMAQI
21st Jul 20263911 PMAQI
22nd Jul 20264012 AMAQI
22nd Jul 2026401 AMAQI
22nd Jul 2026392 AMAQI
22nd Jul 2026403 AMAQI
22nd Jul 2026384 AMAQI

22°C17/29°C

22nd Jul 2026325 AMAQI
5 AM
22nd Jul 2026346 AMAQI
22nd Jul 2026267 AMAQI
22nd Jul 2026248 AMAQI
22nd Jul 2026269 AMAQI
22nd Jul 20262610 AMAQI
22nd Jul 20262211 AMAQI
22nd Jul 20262212 PMAQI
12 PM
22nd Jul 2026251 PMAQI
22nd Jul 2026252 PMAQI
22nd Jul 2026243 PMAQI
22nd Jul 2026334 PMAQI
22nd Jul 2026225 PMAQI
22nd Jul 2026256 PMAQI
22nd Jul 2026227 PMAQI
22nd Jul 2026238 PMAQI
8 PM
22nd Jul 2026209 PMAQI
22nd Jul 20262310 PMAQI
22nd Jul 20261711 PMAQI
12 AM
4 AM

19°C14/23°C

Day time
Avg. Highest Time
11 AM

33AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
7 PM

29AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 11 AM (Avg. 33), while the lowest AQI was between 7 PM to 7 PM (Avg. 29).
Night time
Avg. Highest Time
4 AM

33AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
12 AM - 1 AM

29AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 4 AM (Avg. 33), while the lowest AQI was between 12 AM to 1 AM (Avg. 29).

2026 Days Vs Air Quality

Westmount, Quebec, Canada

2026

94%

187

6%

12

Total number of days with different AQI categories in last 203 days in 2026 (162 days remaining)

Good
187 Days
Moderate
12 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 94%

Health Risk Level:

Very Low

In 2026, 94% of 203 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.

Annual Air Quality Insights

Westmount, Quebec, Canada

AQI levels in 2026

AQI (US)
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.

-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
19AQI (US)
2nd January 2026
34AQI (US)
3rd January 2026
28AQI (US)
4th January 2026
44AQI (US)
5th January 2026
40AQI (US)
6th January 2026
63AQI (US)
7th January 2026
68AQI (US)
8th January 2026
68AQI (US)
9th January 2026
44AQI (US)
10th January 2026
17AQI (US)
11th January 2026
17AQI (US)
12th January 2026
20AQI (US)
13th January 2026
46AQI (US)
14th January 2026
40AQI (US)
15th January 2026
32AQI (US)
16th January 2026
16AQI (US)
17th January 2026
40AQI (US)
18th January 2026
34AQI (US)
19th January 2026
38AQI (US)
20th January 2026
25AQI (US)
21st January 2026
24AQI (US)
22nd January 2026
49AQI (US)
23rd January 2026
53AQI (US)
24th January 2026
48AQI (US)
25th January 2026
46AQI (US)
26th January 2026
47AQI (US)
27th January 2026
44AQI (US)
28th January 2026
46AQI (US)
29th January 2026
51AQI (US)
30th January 2026
50AQI (US)
31st January 2026
44AQI (US)
1st February 2026
47AQI (US)
2nd February 2026
48AQI (US)
3rd February 2026
50AQI (US)
4th February 2026
52AQI (US)
5th February 2026
49AQI (US)
6th February 2026
40AQI (US)
7th February 2026
39AQI (US)
8th February 2026
44AQI (US)
9th February 2026
45AQI (US)
10th February 2026
46AQI (US)
11th February 2026
46AQI (US)
12th February 2026
46AQI (US)
13th February 2026
53AQI (US)
14th February 2026
50AQI (US)
15th February 2026
42AQI (US)
16th February 2026
42AQI (US)
17th February 2026
46AQI (US)
18th February 2026
42AQI (US)
19th February 2026
40AQI (US)
20th February 2026
43AQI (US)
21st February 2026
38AQI (US)
22nd February 2026
36AQI (US)
23rd February 2026
40AQI (US)
24th February 2026
45AQI (US)
25th February 2026
42AQI (US)
26th February 2026
35AQI (US)
27th February 2026
34AQI (US)
28th February 2026
38AQI (US)
1st March 2026
42AQI (US)
2nd March 2026
52AQI (US)
3rd March 2026
45AQI (US)
4th March 2026
44AQI (US)
5th March 2026
42AQI (US)
6th March 2026
38AQI (US)
7th March 2026
39AQI (US)
8th March 2026
38AQI (US)
9th March 2026
40AQI (US)
10th March 2026
34AQI (US)
11th March 2026
42AQI (US)
12th March 2026
42AQI (US)
13th March 2026
40AQI (US)
14th March 2026
36AQI (US)
15th March 2026
36AQI (US)
16th March 2026
36AQI (US)
17th March 2026
34AQI (US)
18th March 2026
33AQI (US)
19th March 2026
32AQI (US)
20th March 2026
36AQI (US)
21st March 2026
36AQI (US)
22nd March 2026
35AQI (US)
23rd March 2026
40AQI (US)
24th March 2026
36AQI (US)
25th March 2026
34AQI (US)
26th March 2026
30AQI (US)
27th March 2026
32AQI (US)
28th March 2026
34AQI (US)
29th March 2026
31AQI (US)
30th March 2026
28AQI (US)
31st March 2026
24AQI (US)
1st April 2026
32AQI (US)
2nd April 2026
34AQI (US)
3rd April 2026
28AQI (US)
4th April 2026
32AQI (US)
5th April 2026
30AQI (US)
6th April 2026
28AQI (US)
7th April 2026
27AQI (US)
8th April 2026
31AQI (US)
9th April 2026
28AQI (US)
10th April 2026
30AQI (US)
11th April 2026
34AQI (US)
12th April 2026
29AQI (US)
13th April 2026
33AQI (US)
14th April 2026
34AQI (US)
15th April 2026
32AQI (US)
16th April 2026
30AQI (US)
17th April 2026
18th April 2026
34AQI (US)
19th April 2026
34AQI (US)
20th April 2026
30AQI (US)
21st April 2026
28AQI (US)
22nd April 2026
23rd April 2026
26AQI (US)
24th April 2026
29AQI (US)
25th April 2026
33AQI (US)
26th April 2026
34AQI (US)
27th April 2026
29AQI (US)
28th April 2026
24AQI (US)
29th April 2026
22AQI (US)
30th April 2026
26AQI (US)
1st May 2026
28AQI (US)
2nd May 2026
26AQI (US)
3rd May 2026
22AQI (US)
4th May 2026
28AQI (US)
5th May 2026
32AQI (US)
6th May 2026
31AQI (US)
7th May 2026
28AQI (US)
8th May 2026
27AQI (US)
9th May 2026
10th May 2026
33AQI (US)
11th May 2026
32AQI (US)
12th May 2026
30AQI (US)
13th May 2026
30AQI (US)
14th May 2026
24AQI (US)
15th May 2026
46AQI (US)
16th May 2026
52AQI (US)
17th May 2026
56AQI (US)
18th May 2026
58AQI (US)
19th May 2026
54AQI (US)
20th May 2026
49AQI (US)
21st May 2026
44AQI (US)
22nd May 2026
44AQI (US)
23rd May 2026
50AQI (US)
24th May 2026
47AQI (US)
25th May 2026
44AQI (US)
26th May 2026
29AQI (US)
27th May 2026
26AQI (US)
28th May 2026
18AQI (US)
29th May 2026
20AQI (US)
30th May 2026
20AQI (US)
31st May 2026
25AQI (US)
1st June 2026
25AQI (US)
2nd June 2026
24AQI (US)
3rd June 2026
22AQI (US)
4th June 2026
24AQI (US)
5th June 2026
27AQI (US)
6th June 2026
25AQI (US)
7th June 2026
20AQI (US)
8th June 2026
24AQI (US)
9th June 2026
24AQI (US)
10th June 2026
27AQI (US)
11th June 2026
24AQI (US)
12th June 2026
26AQI (US)
13th June 2026
21AQI (US)
14th June 2026
23AQI (US)
15th June 2026
23AQI (US)
16th June 2026
25AQI (US)
17th June 2026
24AQI (US)
18th June 2026
25AQI (US)
19th June 2026
22AQI (US)
20th June 2026
23AQI (US)
21st June 2026
20AQI (US)
22nd June 2026
22AQI (US)
23rd June 2026
22AQI (US)
24th June 2026
23AQI (US)
25th June 2026
24AQI (US)
26th June 2026
26AQI (US)
27th June 2026
28AQI (US)
28th June 2026
28AQI (US)
29th June 2026
26AQI (US)
30th June 2026
26AQI (US)
1st July 2026
28AQI (US)
2nd July 2026
30AQI (US)
3rd July 2026
30AQI (US)
4th July 2026
26AQI (US)
5th July 2026
27AQI (US)
6th July 2026
29AQI (US)
7th July 2026
30AQI (US)
8th July 2026
27AQI (US)
9th July 2026
29AQI (US)
10th July 2026
33AQI (US)
11th July 2026
30AQI (US)
12th July 2026
34AQI (US)
13th July 2026
33AQI (US)
14th July 2026
34AQI (US)
15th July 2026
42AQI (US)
16th July 2026
38AQI (US)
17th July 2026
34AQI (US)
18th July 2026
46AQI (US)
19th July 2026
41AQI (US)
20th July 2026
38AQI (US)
21st July 2026
40AQI (US)
22nd July 2026
23rd July 2026
24th July 2026
25th July 2026
26th July 2026
27th July 2026
28th July 2026
29th July 2026
30th July 2026
31st July 2026
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

40AQI (US)

44AQI (US)

37AQI (US)

30AQI (US)

35AQI (US)

24AQI (US)

33AQI (US)

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202635AQI (US)

26
5
26
2
30
1
28
26
4
30
21
187
12

Highest AQI (US) recorded in

February

44AQI (US)

Lowest AQI (US) recorded in

June

24AQI (US)

202533AQI (US)

29
2
23
5
27
4
30
31
23
7
26
5
23
8
30
26
5
26
4
25
6
319
46

Highest AQI (US) recorded in

July

40AQI (US)

Lowest AQI (US) recorded in

April

23AQI (US)

202430AQI (US)

27
2
22
6
27
2
29
26
26
3
27
4
22
9
23
6
31
30
26
5
316
37

Highest AQI (US) recorded in

February

37AQI (US)

Lowest AQI (US) recorded in

November

24AQI (US)

202334AQI (US)

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 (US) recorded in

June

48AQI (US)

Lowest AQI (US) recorded in

November

28AQI (US)

202231AQI (US)

22
8
20
1
26
4
26
28
1
28
1
20
1
2
29
27
3
27
3
25
5
280
27

Highest AQI (US) recorded in

January

41AQI (US)

Lowest AQI (US) recorded in

September

24AQI (US)

202131AQI (US)

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 (US) recorded in

August

39AQI (US)

Lowest AQI (US) recorded in

September

21AQI (US)

202024AQI (US)

4
16
13
1
23
2
28
29
22
2
24
1
26
4
25
1
210
11

Highest AQI (US) recorded in

June

31AQI (US)

Lowest AQI (US) recorded in

May

18AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2026(Avg.)
35AQI (US)
Least Polluted Year Recorded
2020(Avg.)
24AQI (US)

Westmount's annual 2026 AQI (US) (35) shows an average percentage change of 16.2% (worsened AQI (US)) compared to previous years: 2020 (24), 2021 (31), 2022 (31), 2023 (34), 2024 (30), 2025 (33).