St Dominique, Montreal, 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
St Dominique, Montreal, Quebec, Canada
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2025
79AQILowest AQI recorded on
19th Aug 2023
12AQISame Day Analysis (8th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 51 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 8th Aug - 9th Aug 2025
St Dominique, Montreal, Quebec, Canada
AQI
Day
Night
.
5 AM8th Aug 2025
8 PM
4 AM9th Aug 2025
Day time
Avg. Highest Time
9AM8th Aug
63AQI
Avg. Lowest Time
4PM8th Aug
50AQI
Night time
Avg. Highest Time
4AM9th Aug
60AQI
Avg. Lowest Time
11PM8th Aug
53AQI
In the last 24 hours,
St Dominique's AQI reached its highest point of 63 at 9 AM during the Day, while the lowest point, 50, was recorded at 4 PM during the Day between 8th Aug and 9th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
St Dominique, Montreal, Quebec, Canada
JulAug
10th - 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 - 07th07th - 08th08th - 09th09th
Day
Night
10th Jul 2025505 AMAQI
10th Jul 2025486 AMAQI
10th Jul 2025487 AMAQI
10th Jul 2025468 AMAQI
10th Jul 2025459 AMAQI
10th Jul 20254610 AMAQI
10th Jul 20254711 AMAQI
10th Jul 20254812 PMAQI
10th Jul 2025461 PMAQI
10th Jul 2025452 PMAQI
10th Jul 2025443 PMAQI
10th Jul 2025454 PMAQI
10th Jul 2025465 PMAQI
10th Jul 2025466 PMAQI
10th Jul 2025477 PMAQI
10th Jul 2025498 PMAQI
10th Jul 2025479 PMAQI
10th Jul 20254410 PMAQI
10th Jul 20254511 PMAQI
11th Jul 20254312 AMAQI
11th Jul 2025451 AMAQI
11th Jul 2025442 AMAQI
11th Jul 2025523 AMAQI
11th Jul 2025534 AMAQI
25°C19/30°C
11th Jul 2025515 AMAQI
11th Jul 2025516 AMAQI
11th Jul 2025507 AMAQI
11th Jul 2025528 AMAQI
11th Jul 2025509 AMAQI
11th Jul 20255010 AMAQI
11th Jul 20255211 AMAQI
11th Jul 20255212 PMAQI
11th Jul 2025531 PMAQI
11th Jul 2025522 PMAQI
11th Jul 2025503 PMAQI
11th Jul 2025554 PMAQI
11th Jul 2025525 PMAQI
11th Jul 2025516 PMAQI
11th Jul 2025517 PMAQI
11th Jul 2025518 PMAQI
11th Jul 2025489 PMAQI
11th Jul 20254810 PMAQI
11th Jul 20254811 PMAQI
12th Jul 20254912 AMAQI
12th Jul 2025491 AMAQI
12th Jul 2025502 AMAQI
12th Jul 2025543 AMAQI
12th Jul 2025554 AMAQI
26°C19/33°C
12th Jul 2025545 AMAQI
12th Jul 2025516 AMAQI
12th Jul 2025527 AMAQI
12th Jul 2025528 AMAQI
12th Jul 2025539 AMAQI
12th Jul 20255310 AMAQI
12th Jul 20255411 AMAQI
12th Jul 20255412 PMAQI
12th Jul 2025531 PMAQI
12th Jul 2025532 PMAQI
12th Jul 2025543 PMAQI
12th Jul 2025544 PMAQI
12th Jul 2025535 PMAQI
12th Jul 2025536 PMAQI
12th Jul 2025537 PMAQI
12th Jul 2025548 PMAQI
12th Jul 2025539 PMAQI
12th Jul 20255310 PMAQI
12th Jul 20255211 PMAQI
13th Jul 20255212 AMAQI
13th Jul 2025521 AMAQI
13th Jul 2025522 AMAQI
13th Jul 2025463 AMAQI
13th Jul 2025444 AMAQI
27°C20/34°C
13th Jul 2025425 AMAQI
13th Jul 2025416 AMAQI
13th Jul 2025427 AMAQI
13th Jul 2025428 AMAQI
13th Jul 2025409 AMAQI
13th Jul 20254010 AMAQI
13th Jul 20253911 AMAQI
13th Jul 20254012 PMAQI
13th Jul 2025401 PMAQI
13th Jul 2025382 PMAQI
13th Jul 2025403 PMAQI
13th Jul 2025414 PMAQI
13th Jul 2025425 PMAQI
13th Jul 2025426 PMAQI
13th Jul 2025427 PMAQI
13th Jul 2025438 PMAQI
13th Jul 2025439 PMAQI
13th Jul 20254210 PMAQI
13th Jul 20254011 PMAQI
14th Jul 20254312 AMAQI
14th Jul 2025441 AMAQI
14th Jul 2025422 AMAQI
14th Jul 2025363 AMAQI
14th Jul 2025344 AMAQI
26°C23/30°C
14th Jul 2025335 AMAQI
14th Jul 2025326 AMAQI
14th Jul 2025317 AMAQI
14th Jul 2025328 AMAQI
14th Jul 2025349 AMAQI
14th Jul 20253510 AMAQI
14th Jul 20254011 AMAQI
14th Jul 20254612 PMAQI
14th Jul 2025501 PMAQI
14th Jul 2025502 PMAQI
14th Jul 2025423 PMAQI
14th Jul 2025424 PMAQI
14th Jul 2025415 PMAQI
14th Jul 2025436 PMAQI
14th Jul 2025427 PMAQI
14th Jul 2025428 PMAQI
14th Jul 2025409 PMAQI
14th Jul 20254210 PMAQI
14th Jul 20253911 PMAQI
15th Jul 20254012 AMAQI
15th Jul 2025411 AMAQI
15th Jul 2025402 AMAQI
15th Jul 2025353 AMAQI
15th Jul 2025284 AMAQI
27°C22/32°C
15th Jul 2025365 AMAQI
15th Jul 2025346 AMAQI
15th Jul 2025387 AMAQI
15th Jul 2025398 AMAQI
15th Jul 2025459 AMAQI
15th Jul 20254410 AMAQI
15th Jul 20254311 AMAQI
15th Jul 20254312 PMAQI
15th Jul 2025421 PMAQI
15th Jul 2025432 PMAQI
15th Jul 2025443 PMAQI
15th Jul 2025444 PMAQI
15th Jul 2025405 PMAQI
15th Jul 2025416 PMAQI
15th Jul 2025427 PMAQI
15th Jul 2025418 PMAQI
15th Jul 2025409 PMAQI
15th Jul 20254010 PMAQI
15th Jul 20253911 PMAQI
16th Jul 20254012 AMAQI
16th Jul 2025391 AMAQI
16th Jul 2025402 AMAQI
16th Jul 2025423 AMAQI
16th Jul 2025494 AMAQI
27°C20/33°C
16th Jul 2025505 AMAQI
16th Jul 2025496 AMAQI
16th Jul 2025517 AMAQI
16th Jul 2025548 AMAQI
16th Jul 2025499 AMAQI
16th Jul 20255010 AMAQI
16th Jul 20254911 AMAQI
16th Jul 20255012 PMAQI
16th Jul 2025491 PMAQI
16th Jul 2025492 PMAQI
16th Jul 2025503 PMAQI
16th Jul 2025474 PMAQI
16th Jul 2025485 PMAQI
16th Jul 2025486 PMAQI
16th Jul 2025487 PMAQI
16th Jul 2025488 PMAQI
16th Jul 2025489 PMAQI
16th Jul 20254810 PMAQI
16th Jul 20254811 PMAQI
17th Jul 20254812 AMAQI
17th Jul 2025481 AMAQI
17th Jul 2025492 AMAQI
17th Jul 2025513 AMAQI
17th Jul 2025594 AMAQI
29°C22/36°C
17th Jul 2025545 AMAQI
17th Jul 2025506 AMAQI
17th Jul 2025477 AMAQI
17th Jul 2025468 AMAQI
17th Jul 2025489 AMAQI
17th Jul 20254810 AMAQI
17th Jul 20254511 AMAQI
17th Jul 20254512 PMAQI
17th Jul 2025461 PMAQI
17th Jul 2025442 PMAQI
17th Jul 2025433 PMAQI
17th Jul 2025454 PMAQI
17th Jul 2025465 PMAQI
17th Jul 2025476 PMAQI
17th Jul 2025467 PMAQI
17th Jul 2025448 PMAQI
17th Jul 2025489 PMAQI
17th Jul 20254610 PMAQI
17th Jul 20254011 PMAQI
18th Jul 20254012 AMAQI
18th Jul 2025401 AMAQI
18th Jul 2025372 AMAQI
18th Jul 2025273 AMAQI
18th Jul 2025164 AMAQI
27°C18/31°C
18th Jul 2025165 AMAQI
18th Jul 2025156 AMAQI
18th Jul 2025167 AMAQI
18th Jul 2025178 AMAQI
18th Jul 2025199 AMAQI
18th Jul 20252010 AMAQI
18th Jul 20252111 AMAQI
18th Jul 20252212 PMAQI
18th Jul 2025201 PMAQI
18th Jul 2025262 PMAQI
18th Jul 2025223 PMAQI
18th Jul 2025234 PMAQI
18th Jul 2025245 PMAQI
18th Jul 2025256 PMAQI
18th Jul 2025257 PMAQI
18th Jul 2025268 PMAQI
18th Jul 2025259 PMAQI
18th Jul 20252410 PMAQI
18th Jul 20252811 PMAQI
19th Jul 20252912 AMAQI
19th Jul 2025291 AMAQI
19th Jul 2025282 AMAQI
19th Jul 2025293 AMAQI
19th Jul 2025304 AMAQI
21°C14/28°C
19th Jul 2025325 AMAQI
19th Jul 2025306 AMAQI
19th Jul 2025277 AMAQI
19th Jul 2025288 AMAQI
19th Jul 2025289 AMAQI
19th Jul 20252710 AMAQI
19th Jul 20252611 AMAQI
19th Jul 20252912 PMAQI
19th Jul 2025301 PMAQI
19th Jul 2025322 PMAQI
19th Jul 2025363 PMAQI
19th Jul 2025364 PMAQI
19th Jul 2025385 PMAQI
19th Jul 2025386 PMAQI
19th Jul 2025407 PMAQI
19th Jul 2025388 PMAQI
19th Jul 2025339 PMAQI
19th Jul 20253210 PMAQI
19th Jul 20253611 PMAQI
20th Jul 20253712 AMAQI
20th Jul 2025361 AMAQI
20th Jul 2025362 AMAQI
20th Jul 2025403 AMAQI
20th Jul 2025504 AMAQI
22°C15/29°C
20th Jul 2025485 AMAQI
20th Jul 2025486 AMAQI
20th Jul 2025467 AMAQI
20th Jul 2025438 AMAQI
20th Jul 2025389 AMAQI
20th Jul 20253610 AMAQI
20th Jul 20253511 AMAQI
20th Jul 20253512 PMAQI
20th Jul 2025341 PMAQI
20th Jul 2025342 PMAQI
20th Jul 2025343 PMAQI
20th Jul 2025364 PMAQI
20th Jul 2025385 PMAQI
20th Jul 2025386 PMAQI
20th Jul 2025387 PMAQI
20th Jul 2025388 PMAQI
20th Jul 2025409 PMAQI
20th Jul 20254010 PMAQI
20th Jul 20254111 PMAQI
21st Jul 20254212 AMAQI
21st Jul 2025391 AMAQI
21st Jul 2025392 AMAQI
21st Jul 2025443 AMAQI
21st Jul 2025544 AMAQI
22°C17/29°C
21st Jul 2025455 AMAQI
21st Jul 2025356 AMAQI
21st Jul 2025327 AMAQI
21st Jul 2025308 AMAQI
21st Jul 2025319 AMAQI
21st Jul 20253010 AMAQI
21st Jul 20252911 AMAQI
21st Jul 20252712 PMAQI
21st Jul 2025261 PMAQI
21st Jul 2025262 PMAQI
21st Jul 2025233 PMAQI
21st Jul 2025274 PMAQI
21st Jul 2025295 PMAQI
21st Jul 2025296 PMAQI
21st Jul 2025297 PMAQI
21st Jul 2025298 PMAQI
21st Jul 2025299 PMAQI
21st Jul 20252810 PMAQI
21st Jul 20252611 PMAQI
22nd Jul 20252812 AMAQI
22nd Jul 2025271 AMAQI
22nd Jul 2025282 AMAQI
22nd Jul 2025273 AMAQI
22nd Jul 2025174 AMAQI
19°C15/24°C
22nd Jul 2025185 AMAQI
22nd Jul 2025186 AMAQI
22nd Jul 2025177 AMAQI
22nd Jul 2025188 AMAQI
22nd Jul 2025189 AMAQI
22nd Jul 20251910 AMAQI
22nd Jul 20251911 AMAQI
22nd Jul 20251812 PMAQI
22nd Jul 2025181 PMAQI
22nd Jul 2025192 PMAQI
22nd Jul 2025193 PMAQI
22nd Jul 2025204 PMAQI
22nd Jul 2025205 PMAQI
22nd Jul 2025206 PMAQI
22nd Jul 2025207 PMAQI
22nd Jul 2025208 PMAQI
22nd Jul 2025209 PMAQI
22nd Jul 20251910 PMAQI
22nd Jul 20252211 PMAQI
23rd Jul 20252112 AMAQI
23rd Jul 2025221 AMAQI
23rd Jul 2025212 AMAQI
23rd Jul 2025223 AMAQI
23rd Jul 2025224 AMAQI
19°C12/25°C
23rd Jul 2025235 AMAQI
23rd Jul 2025226 AMAQI
23rd Jul 2025247 AMAQI
23rd Jul 2025248 AMAQI
23rd Jul 2025249 AMAQI
23rd Jul 20252610 AMAQI
23rd Jul 20252811 AMAQI
23rd Jul 20253012 PMAQI
23rd Jul 2025281 PMAQI
23rd Jul 2025282 PMAQI
23rd Jul 2025283 PMAQI
23rd Jul 2025224 PMAQI
23rd Jul 2025235 PMAQI
23rd Jul 2025236 PMAQI
23rd Jul 2025237 PMAQI
23rd Jul 2025238 PMAQI
23rd Jul 2025249 PMAQI
23rd Jul 20252410 PMAQI
23rd Jul 20252611 PMAQI
24th Jul 20252612 AMAQI
24th Jul 2025281 AMAQI
24th Jul 2025282 AMAQI
24th Jul 2025293 AMAQI
24th Jul 2025304 AMAQI
22°C13/30°C
24th Jul 2025295 AMAQI
24th Jul 2025296 AMAQI
24th Jul 2025307 AMAQI
24th Jul 2025328 AMAQI
24th Jul 2025319 AMAQI
24th Jul 20253210 AMAQI
24th Jul 20253411 AMAQI
24th Jul 20254212 PMAQI
24th Jul 2025441 PMAQI
24th Jul 2025402 PMAQI
24th Jul 2025473 PMAQI
24th Jul 2025364 PMAQI
24th Jul 2025335 PMAQI
24th Jul 2025346 PMAQI
24th Jul 2025417 PMAQI
24th Jul 2025428 PMAQI
24th Jul 2025409 PMAQI
24th Jul 20254110 PMAQI
24th Jul 20254411 PMAQI
25th Jul 20253512 AMAQI
25th Jul 2025321 AMAQI
25th Jul 2025342 AMAQI
25th Jul 2025493 AMAQI
25th Jul 2025494 AMAQI
27°C17/36°C
25th Jul 2025375 AMAQI
25th Jul 2025336 AMAQI
25th Jul 2025327 AMAQI
25th Jul 2025338 AMAQI
25th Jul 2025339 AMAQI
25th Jul 20253210 AMAQI
25th Jul 20253211 AMAQI
25th Jul 20253112 PMAQI
25th Jul 2025331 PMAQI
25th Jul 2025362 PMAQI
25th Jul 2025423 PMAQI
25th Jul 2025444 PMAQI
25th Jul 2025385 PMAQI
25th Jul 2025396 PMAQI
25th Jul 2025387 PMAQI
25th Jul 2025388 PMAQI
25th Jul 2025419 PMAQI
25th Jul 20254210 PMAQI
25th Jul 20253811 PMAQI
26th Jul 20253812 AMAQI
26th Jul 2025371 AMAQI
26th Jul 2025372 AMAQI
26th Jul 2025443 AMAQI
26th Jul 2025464 AMAQI
26°C23/31°C
26th Jul 2025465 AMAQI
26th Jul 2025526 AMAQI
26th Jul 2025567 AMAQI
26th Jul 2025548 AMAQI
26th Jul 2025499 AMAQI
26th Jul 20255210 AMAQI
26th Jul 20255111 AMAQI
26th Jul 20255012 PMAQI
26th Jul 2025511 PMAQI
26th Jul 2025512 PMAQI
26th Jul 2025503 PMAQI
26th Jul 2025504 PMAQI
26th Jul 2025515 PMAQI
26th Jul 2025506 PMAQI
26th Jul 2025507 PMAQI
26th Jul 2025508 PMAQI
26th Jul 2025519 PMAQI
26th Jul 20255010 PMAQI
26th Jul 20254911 PMAQI
27th Jul 20255012 AMAQI
27th Jul 2025501 AMAQI
27th Jul 2025512 AMAQI
27th Jul 2025493 AMAQI
27th Jul 2025604 AMAQI
25°C16/33°C
27th Jul 2025585 AMAQI
27th Jul 2025586 AMAQI
27th Jul 2025587 AMAQI
27th Jul 2025568 AMAQI
27th Jul 2025579 AMAQI
27th Jul 20255610 AMAQI
27th Jul 20255811 AMAQI
27th Jul 20255612 PMAQI
27th Jul 2025561 PMAQI
27th Jul 2025562 PMAQI
27th Jul 2025563 PMAQI
27th Jul 2025564 PMAQI
27th Jul 2025575 PMAQI
27th Jul 2025576 PMAQI
27th Jul 2025587 PMAQI
27th Jul 2025578 PMAQI
27th Jul 2025559 PMAQI
27th Jul 20255610 PMAQI
27th Jul 20255611 PMAQI
28th Jul 20255512 AMAQI
28th Jul 2025551 AMAQI
28th Jul 2025562 AMAQI
28th Jul 2025533 AMAQI
28th Jul 2025534 AMAQI
24°C19/32°C
28th Jul 2025555 AMAQI
28th Jul 2025586 AMAQI
28th Jul 2025577 AMAQI
28th Jul 2025588 AMAQI
28th Jul 2025589 AMAQI
28th Jul 20255810 AMAQI
28th Jul 20255911 AMAQI
28th Jul 20255912 PMAQI
28th Jul 2025601 PMAQI
28th Jul 2025612 PMAQI
28th Jul 2025593 PMAQI
28th Jul 2025574 PMAQI
28th Jul 2025575 PMAQI
28th Jul 2025576 PMAQI
28th Jul 2025577 PMAQI
28th Jul 2025578 PMAQI
28th Jul 2025589 PMAQI
28th Jul 20255710 PMAQI
28th Jul 20255711 PMAQI
29th Jul 20255812 AMAQI
29th Jul 2025571 AMAQI
29th Jul 2025572 AMAQI
29th Jul 2025583 AMAQI
29th Jul 2025584 AMAQI
27°C21/34°C
29th Jul 2025585 AMAQI
29th Jul 2025586 AMAQI
29th Jul 2025567 AMAQI
29th Jul 2025568 AMAQI
29th Jul 2025559 AMAQI
29th Jul 20255210 AMAQI
29th Jul 20255111 AMAQI
29th Jul 20254812 PMAQI
29th Jul 2025451 PMAQI
29th Jul 2025442 PMAQI
29th Jul 2025433 PMAQI
29th Jul 2025484 PMAQI
29th Jul 2025535 PMAQI
29th Jul 2025536 PMAQI
29th Jul 2025547 PMAQI
29th Jul 2025548 PMAQI
29th Jul 2025559 PMAQI
29th Jul 20255710 PMAQI
29th Jul 20255811 PMAQI
30th Jul 20255712 AMAQI
30th Jul 2025561 AMAQI
30th Jul 2025572 AMAQI
30th Jul 2025583 AMAQI
30th Jul 2025604 AMAQI
25°C22/29°C
30th Jul 2025645 AMAQI
30th Jul 2025646 AMAQI
30th Jul 2025647 AMAQI
30th Jul 2025638 AMAQI
30th Jul 2025669 AMAQI
30th Jul 20256410 AMAQI
30th Jul 20256611 AMAQI
30th Jul 20256612 PMAQI
30th Jul 2025661 PMAQI
30th Jul 2025642 PMAQI
30th Jul 2025653 PMAQI
30th Jul 2025664 PMAQI
30th Jul 2025675 PMAQI
30th Jul 2025676 PMAQI
30th Jul 2025677 PMAQI
30th Jul 2025678 PMAQI
30th Jul 2025679 PMAQI
30th Jul 20256710 PMAQI
30th Jul 20256211 PMAQI
31st Jul 20256012 AMAQI
31st Jul 2025611 AMAQI
31st Jul 2025612 AMAQI
31st Jul 2025613 AMAQI
31st Jul 2025604 AMAQI
24°C20/30°C
31st Jul 2025675 AMAQI
31st Jul 2025636 AMAQI
31st Jul 2025577 AMAQI
31st Jul 2025508 AMAQI
31st Jul 2025509 AMAQI
31st Jul 20254110 AMAQI
31st Jul 20253911 AMAQI
31st Jul 20253212 PMAQI
31st Jul 2025331 PMAQI
31st Jul 2025332 PMAQI
31st Jul 2025353 PMAQI
31st Jul 2025354 PMAQI
31st Jul 2025335 PMAQI
31st Jul 2025336 PMAQI
31st Jul 2025337 PMAQI
31st Jul 2025348 PMAQI
31st Jul 2025439 PMAQI
31st Jul 20253810 PMAQI
31st Jul 20253211 PMAQI
1st Aug 20253312 AMAQI
1st Aug 2025351 AMAQI
1st Aug 2025322 AMAQI
1st Aug 2025343 AMAQI
1st Aug 2025314 AMAQI
20°C16/24°C
1st Aug 2025295 AMAQI
1st Aug 2025256 AMAQI
1st Aug 2025227 AMAQI
1st Aug 2025208 AMAQI
1st Aug 2025209 AMAQI
1st Aug 20252010 AMAQI
1st Aug 20251911 AMAQI
1st Aug 20251812 PMAQI
1st Aug 2025161 PMAQI
1st Aug 2025182 PMAQI
1st Aug 2025193 PMAQI
1st Aug 2025174 PMAQI
1st Aug 2025185 PMAQI
1st Aug 2025186 PMAQI
1st Aug 2025167 PMAQI
1st Aug 2025178 PMAQI
1st Aug 2025199 PMAQI
1st Aug 20252110 PMAQI
1st Aug 20252311 PMAQI
2nd Aug 20252412 AMAQI
2nd Aug 2025271 AMAQI
2nd Aug 2025292 AMAQI
2nd Aug 2025293 AMAQI
2nd Aug 2025284 AMAQI
19°C12/26°C
2nd Aug 2025305 AMAQI
2nd Aug 2025286 AMAQI
2nd Aug 2025257 AMAQI
2nd Aug 2025238 AMAQI
2nd Aug 2025229 AMAQI
2nd Aug 20252010 AMAQI
2nd Aug 20252111 AMAQI
2nd Aug 20252212 PMAQI
2nd Aug 2025221 PMAQI
2nd Aug 2025262 PMAQI
2nd Aug 2025303 PMAQI
2nd Aug 2025404 PMAQI
2nd Aug 2025555 PMAQI
2nd Aug 2025606 PMAQI
2nd Aug 2025507 PMAQI
2nd Aug 2025318 PMAQI
2nd Aug 2025319 PMAQI
2nd Aug 20253210 PMAQI
2nd Aug 20253911 PMAQI
3rd Aug 20254212 AMAQI
3rd Aug 2025421 AMAQI
3rd Aug 2025462 AMAQI
3rd Aug 2025553 AMAQI
3rd Aug 2025484 AMAQI
21°C13/27°C
3rd Aug 2025455 AMAQI
3rd Aug 2025466 AMAQI
3rd Aug 2025447 AMAQI
3rd Aug 2025408 AMAQI
3rd Aug 2025399 AMAQI
3rd Aug 20254410 AMAQI
3rd Aug 20255611 AMAQI
3rd Aug 20256112 PMAQI
3rd Aug 2025701 PMAQI
3rd Aug 2025682 PMAQI
3rd Aug 2025663 PMAQI
3rd Aug 2025674 PMAQI
3rd Aug 2025675 PMAQI
3rd Aug 2025656 PMAQI
3rd Aug 2025587 PMAQI
3rd Aug 2025668 PMAQI
3rd Aug 2025559 PMAQI
3rd Aug 20256310 PMAQI
3rd Aug 20256311 PMAQI
4th Aug 20256012 AMAQI
4th Aug 2025611 AMAQI
4th Aug 2025602 AMAQI
4th Aug 2025573 AMAQI
4th Aug 2025544 AMAQI
24°C16/30°C
4th Aug 2025585 AMAQI
4th Aug 2025626 AMAQI
4th Aug 2025647 AMAQI
4th Aug 2025668 AMAQI
4th Aug 2025689 AMAQI
4th Aug 20257810 AMAQI
4th Aug 20257911 AMAQI
4th Aug 20258312 PMAQI
4th Aug 20251071 PMAQI
4th Aug 20251282 PMAQI
4th Aug 20251243 PMAQI
4th Aug 20251084 PMAQI
4th Aug 2025995 PMAQI
4th Aug 2025946 PMAQI
4th Aug 2025957 PMAQI
4th Aug 2025878 PMAQI
4th Aug 2025729 PMAQI
4th Aug 20257610 PMAQI
4th Aug 20257811 PMAQI
5th Aug 20257512 AMAQI
5th Aug 2025661 AMAQI
5th Aug 2025552 AMAQI
5th Aug 2025503 AMAQI
5th Aug 2025464 AMAQI
23°C17/28°C
5th Aug 2025445 AMAQI
5th Aug 2025396 AMAQI
5th Aug 2025347 AMAQI
5th Aug 2025318 AMAQI
5th Aug 2025299 AMAQI
5th Aug 20253210 AMAQI
5th Aug 20253311 AMAQI
5th Aug 20253512 PMAQI
5th Aug 2025341 PMAQI
5th Aug 2025342 PMAQI
5th Aug 2025343 PMAQI
5th Aug 2025334 PMAQI
5th Aug 2025325 PMAQI
5th Aug 2025316 PMAQI
5th Aug 2025307 PMAQI
5th Aug 2025288 PMAQI
5th Aug 2025349 PMAQI
5th Aug 20253210 PMAQI
5th Aug 20253011 PMAQI
6th Aug 20253112 AMAQI
6th Aug 2025321 AMAQI
6th Aug 2025302 AMAQI
6th Aug 2025313 AMAQI
6th Aug 2025294 AMAQI
21°C13/28°C
6th Aug 2025295 AMAQI
6th Aug 2025306 AMAQI
6th Aug 2025327 AMAQI
6th Aug 2025288 AMAQI
6th Aug 2025309 AMAQI
6th Aug 20253010 AMAQI
6th Aug 20253411 AMAQI
6th Aug 20253612 PMAQI
6th Aug 2025361 PMAQI
6th Aug 2025342 PMAQI
6th Aug 2025353 PMAQI
6th Aug 2025354 PMAQI
6th Aug 2025345 PMAQI
6th Aug 2025366 PMAQI
6th Aug 2025357 PMAQI
6th Aug 2025348 PMAQI
6th Aug 2025339 PMAQI
6th Aug 20253410 PMAQI
6th Aug 20253611 PMAQI
7th Aug 20253712 AMAQI
7th Aug 2025381 AMAQI
7th Aug 2025352 AMAQI
7th Aug 2025333 AMAQI
7th Aug 2025334 AMAQI
22°C13/30°C
7th Aug 2025315 AMAQI
7th Aug 2025316 AMAQI
7th Aug 2025337 AMAQI
7th Aug 2025328 AMAQI
7th Aug 2025369 AMAQI
7th Aug 20253810 AMAQI
7th Aug 20254011 AMAQI
7th Aug 20254412 PMAQI
7th Aug 2025441 PMAQI
7th Aug 2025452 PMAQI
7th Aug 2025433 PMAQI
7th Aug 2025424 PMAQI
7th Aug 2025445 PMAQI
7th Aug 2025466 PMAQI
7th Aug 2025427 PMAQI
7th Aug 2025428 PMAQI
7th Aug 2025409 PMAQI
7th Aug 20253910 PMAQI
7th Aug 20253911 PMAQI
8th Aug 20253912 AMAQI
8th Aug 2025391 AMAQI
8th Aug 2025382 AMAQI
8th Aug 2025423 AMAQI
8th Aug 2025504 AMAQI
24°C16/32°C
8th Aug 2025545 AMAQI
8th Aug 2025576 AMAQI
8th Aug 2025587 AMAQI
8th Aug 2025628 AMAQI
8th Aug 2025639 AMAQI
8th Aug 20256210 AMAQI
8th Aug 20255711 AMAQI
8th Aug 20255412 PMAQI
8th Aug 2025521 PMAQI
8th Aug 2025522 PMAQI
8th Aug 2025503 PMAQI
8th Aug 2025504 PMAQI
8th Aug 2025535 PMAQI
8th Aug 2025536 PMAQI
8th Aug 2025547 PMAQI
8th Aug 2025538 PMAQI
8th Aug 2025539 PMAQI
8th Aug 20255310 PMAQI
8th Aug 20255311 PMAQI
9th Aug 20255412 AMAQI
9th Aug 2025541 AMAQI
9th Aug 2025542 AMAQI
9th Aug 2025553 AMAQI
9th Aug 2025604 AMAQI
25°C19/34°C
9th Aug 2025595 AMAQI
5 AM9th Aug 2025626 AMAQI
9th Aug 2025597 AMAQI
9th Aug 2025638 AMAQI
12 PM
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
43AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
43AQI
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. 43), while the lowest AQI was between 12 AM to 11 PM (Avg. 43).
2025 Days Vs Air Quality
St Dominique, Montreal, Quebec, Canada
2025
90%
198
10%
22
Total number of days with different AQI categories in last 221 days in 2025 (144 days remaining)
Good
198 DaysModerate
22 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% of 221 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
St Dominique, Montreal, 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
31AQI
31AQI
2nd January 2025
22AQI
22AQI
3rd January 2025
21AQI
21AQI
4th January 2025
21AQI
21AQI
5th January 2025
24AQI
24AQI
6th January 2025
26AQI
26AQI
7th January 2025
22AQI
22AQI
8th January 2025
23AQI
23AQI
9th January 2025
21AQI
21AQI
10th January 2025
22AQI
22AQI
11th January 2025
39AQI
39AQI
12th January 2025
29AQI
29AQI
13th January 2025
57AQI
57AQI
14th January 2025
31AQI
31AQI
15th January 2025
22AQI
22AQI
16th January 2025
29AQI
29AQI
17th January 2025
64AQI
64AQI
18th January 2025
47AQI
47AQI
19th January 2025
28AQI
28AQI
20th January 2025
24AQI
24AQI
21st January 2025
34AQI
34AQI
22nd January 2025
43AQI
43AQI
23rd January 2025
42AQI
42AQI
24th January 2025
44AQI
44AQI
25th January 2025
44AQI
44AQI
26th January 2025
37AQI
37AQI
27th January 2025
24AQI
24AQI
28th January 2025
26AQI
26AQI
29th January 2025
29AQI
29AQI
30th January 2025
24AQI
24AQI
31st January 2025
48AQI
48AQI
1st February 2025
23AQI
23AQI
2nd February 2025
36AQI
36AQI
3rd February 2025
57AQI
57AQI
4th February 2025
27AQI
27AQI
5th February 2025
22AQI
22AQI
6th February 2025
35AQI
35AQI
7th February 2025
32AQI
32AQI
8th February 2025
25AQI
25AQI
9th February 2025
34AQI
34AQI
10th February 2025
25AQI
25AQI
11th February 2025
28AQI
28AQI
12th February 2025
30AQI
30AQI
13th February 2025
28AQI
28AQI
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
22AQI
22AQI
20th February 2025
29AQI
29AQI
21st February 2025
21AQI
21AQI
22nd February 2025
27AQI
27AQI
23rd February 2025
52AQI
52AQI
24th February 2025
48AQI
48AQI
25th February 2025
60AQI
60AQI
26th February 2025
50AQI
50AQI
27th February 2025
45AQI
45AQI
28th February 2025
30AQI
30AQI
1st March 2025
27AQI
27AQI
2nd March 2025
23AQI
23AQI
3rd March 2025
35AQI
35AQI
4th March 2025
38AQI
38AQI
5th March 2025
55AQI
55AQI
6th March 2025
20AQI
20AQI
7th March 2025
23AQI
23AQI
8th March 2025
25AQI
25AQI
9th March 2025
24AQI
24AQI
10th March 2025
31AQI
31AQI
11th March 2025
42AQI
42AQI
12th March 2025
23AQI
23AQI
13th March 2025
45AQI
45AQI
14th March 2025
83AQI
83AQI
15th March 2025
60AQI
60AQI
16th March 2025
49AQI
49AQI
17th March 2025
22AQI
22AQI
18th March 2025
29AQI
29AQI
19th March 2025
37AQI
37AQI
20th March 2025
27AQI
27AQI
21st March 2025
21AQI
21AQI
22nd March 2025
25AQI
25AQI
23rd March 2025
20AQI
20AQI
24th March 2025
25AQI
25AQI
25th March 2025
25AQI
25AQI
26th March 2025
22AQI
22AQI
27th March 2025
20AQI
20AQI
28th March 2025
22AQI
22AQI
29th March 2025
21AQI
21AQI
30th March 2025
25AQI
25AQI
31st March 2025
32AQI
32AQI
1st April 2025
18AQI
18AQI
2nd April 2025
20AQI
20AQI
3rd April 2025
21AQI
21AQI
4th April 2025
19AQI
19AQI
5th April 2025
23AQI
23AQI
6th April 2025
19AQI
19AQI
7th April 2025
20AQI
20AQI
8th April 2025
27AQI
27AQI
9th April 2025
18AQI
18AQI
10th April 2025
25AQI
25AQI
11th April 2025
34AQI
34AQI
12th April 2025
41AQI
41AQI
13th April 2025
26AQI
26AQI
14th April 2025
34AQI
34AQI
15th April 2025
29AQI
29AQI
16th April 2025
15AQI
15AQI
17th April 2025
17AQI
17AQI
18th April 2025
28AQI
28AQI
19th April 2025
47AQI
47AQI
20th April 2025
17AQI
17AQI
21st April 2025
22AQI
22AQI
22nd April 2025
24AQI
24AQI
23rd April 2025
20AQI
20AQI
24th April 2025
22AQI
22AQI
25th April 2025
24AQI
24AQI
26th April 2025
27AQI
27AQI
27th April 2025
16AQI
16AQI
28th April 2025
21AQI
21AQI
29th April 2025
31AQI
31AQI
30th April 2025
18AQI
18AQI
1st May 2025
18AQI
18AQI
2nd May 2025
26AQI
26AQI
3rd May 2025
18AQI
18AQI
4th May 2025
31AQI
31AQI
5th May 2025
22AQI
22AQI
6th May 2025
22AQI
22AQI
7th May 2025
18AQI
18AQI
8th May 2025
16AQI
16AQI
9th May 2025
21AQI
21AQI
10th May 2025
24AQI
24AQI
11th May 2025
17AQI
17AQI
12th May 2025
23AQI
23AQI
13th May 2025
38AQI
38AQI
14th May 2025
39AQI
39AQI
15th May 2025
31AQI
31AQI
16th May 2025
44AQI
44AQI
17th May 2025
44AQI
44AQI
18th May 2025
20AQI
20AQI
19th May 2025
13AQI
13AQI
20th May 2025
15AQI
15AQI
21st May 2025
20AQI
20AQI
22nd May 2025
17AQI
17AQI
23rd May 2025
17AQI
17AQI
24th May 2025
15AQI
15AQI
25th May 2025
18AQI
18AQI
26th May 2025
23AQI
23AQI
27th May 2025
27AQI
27AQI
28th May 2025
33AQI
33AQI
29th May 2025
34AQI
34AQI
30th May 2025
26AQI
26AQI
31st May 2025
32AQI
32AQI
1st June 2025
14AQI
14AQI
2nd June 2025
17AQI
17AQI
3rd June 2025
26AQI
26AQI
4th June 2025
42AQI
42AQI
5th June 2025
42AQI
42AQI
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
29AQI
29AQI
14th June 2025
30AQI
30AQI
15th June 2025
32AQI
32AQI
16th June 2025
46AQI
46AQI
17th June 2025
46AQI
46AQI
18th June 2025
28AQI
28AQI
19th June 2025
38AQI
38AQI
20th June 2025
23AQI
23AQI
21st June 2025
24AQI
24AQI
22nd June 2025
24AQI
24AQI
23rd June 2025
40AQI
40AQI
24th June 2025
50AQI
50AQI
25th June 2025
46AQI
46AQI
26th June 2025
30AQI
30AQI
27th June 2025
29AQI
29AQI
28th June 2025
29AQI
29AQI
29th June 2025
30AQI
30AQI
30th June 2025
29AQI
29AQI
1st July 2025
34AQI
34AQI
2nd July 2025
30AQI
30AQI
3rd July 2025
40AQI
40AQI
4th July 2025
25AQI
25AQI
5th July 2025
26AQI
26AQI
6th July 2025
41AQI
41AQI
7th July 2025
44AQI
44AQI
8th July 2025
31AQI
31AQI
9th July 2025
44AQI
44AQI
10th July 2025
46AQI
46AQI
11th July 2025
50AQI
50AQI
12th July 2025
53AQI
53AQI
13th July 2025
43AQI
43AQI
14th July 2025
40AQI
40AQI
15th July 2025
40AQI
40AQI
16th July 2025
47AQI
47AQI
17th July 2025
47AQI
47AQI
18th July 2025
24AQI
24AQI
19th July 2025
32AQI
32AQI
20th July 2025
39AQI
39AQI
21st July 2025
33AQI
33AQI
22nd July 2025
21AQI
21AQI
23rd July 2025
24AQI
24AQI
24th July 2025
35AQI
35AQI
25th July 2025
37AQI
37AQI
26th July 2025
48AQI
48AQI
27th July 2025
56AQI
56AQI
28th July 2025
57AQI
57AQI
29th July 2025
54AQI
54AQI
30th July 2025
64AQI
64AQI
31st July 2025
45AQI
45AQI
1st August 2025
23AQI
23AQI
2nd August 2025
32AQI
32AQI
3rd August 2025
55AQI
55AQI
4th August 2025
79AQI
79AQI
5th August 2025
39AQI
39AQI
6th August 2025
33AQI
33AQI
7th August 2025
39AQI
39AQI
8th August 2025
51AQI
51AQI
32AQI
32AQI
31AQI
24AQI
25AQI
37AQI
40AQI
44AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202532AQI
29
2
25
3
28
3
30
31
24
6
26
5
5
3
198
22
Highest AQI recorded in
August44AQI
Lowest AQI recorded in
April24AQI
202432AQI
27
4
23
6
29
2
30
31
23
6
26
5
20
11
24
6
31
30
25
5
1
319
45
1
Highest AQI recorded in
August41AQI
Lowest AQI recorded in
November23AQI
202333AQI
30
1
24
4
31
29
1
29
1
1
21
6
2
1
24
6
1
29
2
23
7
30
1
29
25
6
324
35
4
1
Highest AQI recorded in
June49AQI
Lowest AQI recorded in
October24AQI
202230AQI
22
9
20
1
28
3
30
29
2
30
23
1
29
28
3
29
1
30
1
299
20
Highest AQI recorded in
January42AQI
Lowest AQI recorded in
August16AQI
202130AQI
25
5
25
3
31
30
26
5
30
27
4
28
3
30
28
3
29
1
27
4
336
28
Highest AQI recorded in
August35AQI
Lowest AQI recorded in
September22AQI
202027AQI
18
18
29
1
31
31
29
1
31
26
4
27
240
6
Highest AQI recorded in
June34AQI
Lowest AQI recorded in
October22AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
33AQILeast Polluted Year Recorded
2020(Avg.)
27AQISt Dominique's annual 2025 AQI (32) shows an average percentage change of 6.5% (worsened AQI) compared to previous years: 2020 (27), 2021 (30), 2022 (30), 2023 (33), 2024 (32).
