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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Chacnier, Longueuil, 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

Chacnier, Longueuil, Quebec, Canada

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
17th Jul 2023
259AQI
Lowest AQI recorded on
8th Jul 2022
16AQI

Same Day Analysis (29th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 39 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 29th Jul - 30th Jul 2026

Chacnier, Longueuil, Quebec, Canada

AQI
Day
Night
.

5 AM29th Jul 2026

8 PM

4 AM30th Jul 2026

Day time
Avg. Highest Time
3PM29th Jul

46AQI

Avg. Lowest Time
4PM29th Jul

23AQI

Night time
Avg. Highest Time
10PM29th Jul

42AQI

Avg. Lowest Time
4AM30th Jul

32AQI

In the last 24 hours,

Chacnier's AQI reached its highest point of 46 at 3 PM during the Day, while the lowest point, 23, was recorded at 4 PM during the Day between 29th Jul and 30th Jul 2026.

Day & Night AQI Trend : Jul 2026

Chacnier, Longueuil, Quebec, Canada

Jul
01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th
Day
Night
1st Jul 2026245 AMAQI
1st Jul 2026266 AMAQI
1st Jul 2026267 AMAQI
1st Jul 2026308 AMAQI
1st Jul 2026259 AMAQI
1st Jul 20263210 AMAQI
1st Jul 20263111 AMAQI
1st Jul 20263012 PMAQI
1st Jul 2026301 PMAQI
1st Jul 2026302 PMAQI
1st Jul 2026303 PMAQI
1st Jul 2026284 PMAQI
1st Jul 2026295 PMAQI
1st Jul 2026286 PMAQI
1st Jul 2026267 PMAQI
1st Jul 2026278 PMAQI
1st Jul 2026259 PMAQI
1st Jul 20261810 PMAQI
1st Jul 20262211 PMAQI
2nd Jul 20262012 AMAQI
2nd Jul 2026221 AMAQI
2nd Jul 2026222 AMAQI
2nd Jul 2026243 AMAQI
2nd Jul 2026264 AMAQI

27°C23/36°C

2nd Jul 2026225 AMAQI
2nd Jul 2026246 AMAQI
2nd Jul 2026177 AMAQI
2nd Jul 2026288 AMAQI
2nd Jul 2026289 AMAQI
2nd Jul 20262810 AMAQI
2nd Jul 20262911 AMAQI
2nd Jul 20263012 PMAQI
2nd Jul 2026271 PMAQI
2nd Jul 2026312 PMAQI
2nd Jul 2026263 PMAQI
2nd Jul 2026304 PMAQI
2nd Jul 2026265 PMAQI
2nd Jul 2026346 PMAQI
2nd Jul 2026277 PMAQI
2nd Jul 2026268 PMAQI
2nd Jul 2026409 PMAQI
2nd Jul 20264010 PMAQI
2nd Jul 20262611 PMAQI
3rd Jul 20262712 AMAQI
3rd Jul 2026281 AMAQI
3rd Jul 2026312 AMAQI
3rd Jul 2026303 AMAQI
3rd Jul 2026294 AMAQI

27°C22/36°C

3rd Jul 2026265 AMAQI
3rd Jul 2026286 AMAQI
3rd Jul 2026287 AMAQI
3rd Jul 2026288 AMAQI
3rd Jul 2026309 AMAQI
3rd Jul 20263110 AMAQI
3rd Jul 20262911 AMAQI
3rd Jul 20263312 PMAQI
3rd Jul 2026301 PMAQI
3rd Jul 2026282 PMAQI
3rd Jul 2026263 PMAQI
3rd Jul 2026324 PMAQI
3rd Jul 2026265 PMAQI
3rd Jul 2026306 PMAQI
3rd Jul 2026307 PMAQI
3rd Jul 2026278 PMAQI
3rd Jul 2026269 PMAQI
3rd Jul 20262410 PMAQI
3rd Jul 20262611 PMAQI
4th Jul 20263212 AMAQI
4th Jul 2026271 AMAQI
4th Jul 2026322 AMAQI
4th Jul 2026303 AMAQI
4th Jul 2026264 AMAQI

27°C22/34°C

4th Jul 2026265 AMAQI
4th Jul 2026316 AMAQI
4th Jul 2026287 AMAQI
4th Jul 2026258 AMAQI
4th Jul 2026309 AMAQI
4th Jul 20262710 AMAQI
4th Jul 20262811 AMAQI
4th Jul 20263012 PMAQI
4th Jul 2026241 PMAQI
4th Jul 2026262 PMAQI
4th Jul 2026263 PMAQI
4th Jul 2026264 PMAQI
4th Jul 2026245 PMAQI
4th Jul 2026226 PMAQI
4th Jul 2026247 PMAQI
4th Jul 2026218 PMAQI
4th Jul 2026209 PMAQI
4th Jul 20262210 PMAQI
4th Jul 20262011 PMAQI
5th Jul 20262012 AMAQI
5th Jul 2026251 AMAQI
5th Jul 2026282 AMAQI
5th Jul 2026283 AMAQI
5th Jul 2026404 AMAQI

25°C20/31°C

5th Jul 2026425 AMAQI
5th Jul 2026266 AMAQI
5th Jul 2026247 AMAQI
5th Jul 2026278 AMAQI
5th Jul 2026269 AMAQI
5th Jul 20262510 AMAQI
5th Jul 20262811 AMAQI
5th Jul 20262812 PMAQI
5th Jul 2026311 PMAQI
5th Jul 2026312 PMAQI
5th Jul 2026243 PMAQI
5th Jul 2026304 PMAQI
5th Jul 2026285 PMAQI
5th Jul 2026286 PMAQI
5th Jul 2026267 PMAQI
5th Jul 2026228 PMAQI
5th Jul 2026219 PMAQI
5th Jul 20262010 PMAQI
5th Jul 20262111 PMAQI
6th Jul 20261912 AMAQI
6th Jul 2026241 AMAQI
6th Jul 2026382 AMAQI
6th Jul 2026283 AMAQI
6th Jul 2026244 AMAQI

23°C16/31°C

6th Jul 2026195 AMAQI
6th Jul 2026226 AMAQI
6th Jul 2026307 AMAQI
6th Jul 2026288 AMAQI
6th Jul 2026279 AMAQI
6th Jul 20263110 AMAQI
6th Jul 20263011 AMAQI
6th Jul 20263112 PMAQI
6th Jul 2026301 PMAQI
6th Jul 2026302 PMAQI
6th Jul 2026323 PMAQI
6th Jul 2026364 PMAQI
6th Jul 2026385 PMAQI
6th Jul 2026346 PMAQI
6th Jul 2026387 PMAQI
6th Jul 2026348 PMAQI
6th Jul 2026289 PMAQI
6th Jul 20262610 PMAQI
6th Jul 20262311 PMAQI
7th Jul 20262512 AMAQI
7th Jul 2026281 AMAQI
7th Jul 2026322 AMAQI
7th Jul 2026503 AMAQI
7th Jul 2026314 AMAQI

24°C16/33°C

7th Jul 2026325 AMAQI
7th Jul 2026306 AMAQI
7th Jul 2026287 AMAQI
7th Jul 2026308 AMAQI
7th Jul 2026309 AMAQI
7th Jul 20263010 AMAQI
7th Jul 20263211 AMAQI
7th Jul 20263212 PMAQI
7th Jul 2026321 PMAQI
7th Jul 2026322 PMAQI
7th Jul 2026283 PMAQI
7th Jul 2026324 PMAQI
7th Jul 2026325 PMAQI
7th Jul 2026316 PMAQI
7th Jul 2026287 PMAQI
7th Jul 2026268 PMAQI
7th Jul 2026289 PMAQI
7th Jul 20262610 PMAQI
7th Jul 20262811 PMAQI
8th Jul 20262512 AMAQI
8th Jul 2026261 AMAQI
8th Jul 2026302 AMAQI
8th Jul 2026303 AMAQI
8th Jul 2026254 AMAQI

26°C20/33°C

8th Jul 2026265 AMAQI
8th Jul 2026226 AMAQI
8th Jul 2026227 AMAQI
8th Jul 2026248 AMAQI
8th Jul 2026269 AMAQI
8th Jul 20263010 AMAQI
8th Jul 20263311 AMAQI
8th Jul 20263212 PMAQI
8th Jul 2026301 PMAQI
8th Jul 2026282 PMAQI
8th Jul 2026283 PMAQI
8th Jul 2026304 PMAQI
8th Jul 2026305 PMAQI
8th Jul 2026316 PMAQI
8th Jul 2026297 PMAQI
8th Jul 2026248 PMAQI
8th Jul 2026279 PMAQI
8th Jul 20262610 PMAQI
8th Jul 20262711 PMAQI
9th Jul 20262912 AMAQI
9th Jul 2026241 AMAQI
9th Jul 2026252 AMAQI
9th Jul 2026273 AMAQI
9th Jul 2026284 AMAQI

26°C19/35°C

9th Jul 2026275 AMAQI
9th Jul 2026256 AMAQI
9th Jul 2026267 AMAQI
9th Jul 2026268 AMAQI
9th Jul 2026289 AMAQI
9th Jul 20263210 AMAQI
9th Jul 20263011 AMAQI
9th Jul 20263212 PMAQI
9th Jul 2026291 PMAQI
9th Jul 2026282 PMAQI
9th Jul 2026263 PMAQI
9th Jul 2026314 PMAQI
9th Jul 2026305 PMAQI
9th Jul 2026286 PMAQI
9th Jul 2026307 PMAQI
9th Jul 2026328 PMAQI
9th Jul 2026329 PMAQI
9th Jul 20263010 PMAQI
9th Jul 20262811 PMAQI
10th Jul 20262412 AMAQI
10th Jul 2026271 AMAQI
10th Jul 2026262 AMAQI
10th Jul 2026283 AMAQI
10th Jul 2026324 AMAQI

24°C20/30°C

10th Jul 2026325 AMAQI
10th Jul 2026346 AMAQI
10th Jul 2026317 AMAQI
10th Jul 2026328 AMAQI
10th Jul 2026349 AMAQI
10th Jul 20263510 AMAQI
10th Jul 20263611 AMAQI
10th Jul 20263812 PMAQI
10th Jul 2026351 PMAQI
10th Jul 2026332 PMAQI
10th Jul 2026333 PMAQI
10th Jul 2026344 PMAQI
10th Jul 2026365 PMAQI
10th Jul 2026346 PMAQI
10th Jul 2026367 PMAQI
10th Jul 2026388 PMAQI
10th Jul 2026369 PMAQI
10th Jul 20263010 PMAQI
10th Jul 20263011 PMAQI
11th Jul 20262412 AMAQI
11th Jul 2026261 AMAQI
11th Jul 2026222 AMAQI
11th Jul 2026283 AMAQI
11th Jul 2026324 AMAQI

23°C18/29°C

11th Jul 2026325 AMAQI
11th Jul 2026306 AMAQI
11th Jul 2026287 AMAQI
11th Jul 2026368 AMAQI
11th Jul 2026359 AMAQI
11th Jul 20263410 AMAQI
11th Jul 20263411 AMAQI
11th Jul 20263612 PMAQI
11th Jul 2026341 PMAQI
11th Jul 2026332 PMAQI
11th Jul 2026303 PMAQI
11th Jul 2026324 PMAQI
11th Jul 2026335 PMAQI
11th Jul 2026306 PMAQI
11th Jul 2026327 PMAQI
11th Jul 2026338 PMAQI
11th Jul 2026329 PMAQI
11th Jul 20262810 PMAQI
11th Jul 20262711 PMAQI
12th Jul 20262712 AMAQI
12th Jul 2026261 AMAQI
12th Jul 2026222 AMAQI
12th Jul 2026283 AMAQI
12th Jul 2026584 AMAQI

22°C15/29°C

12th Jul 2026285 AMAQI
12th Jul 2026316 AMAQI
12th Jul 2026307 AMAQI
12th Jul 2026328 AMAQI
12th Jul 2026629 AMAQI
12th Jul 20263010 AMAQI
12th Jul 20266011 AMAQI
12th Jul 20263412 PMAQI
12th Jul 2026241 PMAQI
12th Jul 2026292 PMAQI
12th Jul 2026303 PMAQI
12th Jul 2026444 PMAQI
12th Jul 2026405 PMAQI
12th Jul 2026286 PMAQI
12th Jul 2026257 PMAQI
12th Jul 2026298 PMAQI
12th Jul 2026319 PMAQI
12th Jul 20262810 PMAQI
12th Jul 20262611 PMAQI
13th Jul 20262312 AMAQI
13th Jul 2026241 AMAQI
13th Jul 2026232 AMAQI
13th Jul 2026243 AMAQI
13th Jul 2026324 AMAQI

24°C15/32°C

13th Jul 2026325 AMAQI
13th Jul 2026326 AMAQI
13th Jul 2026327 AMAQI
13th Jul 2026328 AMAQI
13th Jul 2026329 AMAQI
13th Jul 20264710 AMAQI
13th Jul 20264611 AMAQI
13th Jul 20264812 PMAQI
13th Jul 2026321 PMAQI
13th Jul 2026322 PMAQI
13th Jul 2026283 PMAQI
13th Jul 2026324 PMAQI
13th Jul 2026305 PMAQI
13th Jul 2026326 PMAQI
13th Jul 2026287 PMAQI
13th Jul 2026328 PMAQI
13th Jul 2026349 PMAQI
13th Jul 20263510 PMAQI
13th Jul 20262511 PMAQI
14th Jul 20262212 AMAQI
14th Jul 2026221 AMAQI
14th Jul 2026342 AMAQI
14th Jul 2026343 AMAQI
14th Jul 2026384 AMAQI

24°C17/33°C

14th Jul 2026345 AMAQI
14th Jul 2026316 AMAQI
14th Jul 2026347 AMAQI
14th Jul 2026348 AMAQI
14th Jul 2026329 AMAQI
14th Jul 20263410 AMAQI
14th Jul 20263711 AMAQI
14th Jul 20263812 PMAQI
14th Jul 2026321 PMAQI
14th Jul 2026322 PMAQI
14th Jul 2026303 PMAQI
14th Jul 2026364 PMAQI
14th Jul 2026305 PMAQI
14th Jul 2026316 PMAQI
14th Jul 2026317 PMAQI
14th Jul 2026528 PMAQI
14th Jul 2026569 PMAQI
14th Jul 20262610 PMAQI
14th Jul 20262311 PMAQI
15th Jul 20262312 AMAQI
15th Jul 2026221 AMAQI
15th Jul 2026642 AMAQI
15th Jul 2026363 AMAQI
15th Jul 2026424 AMAQI

27°C21/35°C

15th Jul 2026495 AMAQI
15th Jul 2026466 AMAQI
15th Jul 2026407 AMAQI
15th Jul 2026408 AMAQI
15th Jul 2026409 AMAQI
15th Jul 20265610 AMAQI
15th Jul 20263811 AMAQI
15th Jul 20263612 PMAQI
15th Jul 2026341 PMAQI
15th Jul 2026402 PMAQI
15th Jul 2026413 PMAQI
15th Jul 2026324 PMAQI
15th Jul 2026345 PMAQI
15th Jul 2026306 PMAQI
15th Jul 2026327 PMAQI
15th Jul 2026318 PMAQI
15th Jul 2026309 PMAQI
15th Jul 20263010 PMAQI
15th Jul 20263011 PMAQI
16th Jul 20263212 AMAQI
16th Jul 2026381 AMAQI
16th Jul 2026402 AMAQI
16th Jul 2026243 AMAQI
16th Jul 2026284 AMAQI

25°C20/31°C

16th Jul 2026325 AMAQI
16th Jul 2026316 AMAQI
16th Jul 2026507 AMAQI
16th Jul 2026548 AMAQI
16th Jul 2026569 AMAQI
16th Jul 20266810 AMAQI
16th Jul 20266011 AMAQI
16th Jul 20263012 PMAQI
16th Jul 2026591 PMAQI
16th Jul 2026302 PMAQI
16th Jul 2026383 PMAQI
16th Jul 2026284 PMAQI
16th Jul 2026315 PMAQI
16th Jul 2026326 PMAQI
16th Jul 2026267 PMAQI
16th Jul 2026268 PMAQI
16th Jul 2026309 PMAQI
16th Jul 20262810 PMAQI
16th Jul 20263011 PMAQI
17th Jul 20262612 AMAQI
17th Jul 2026241 AMAQI
17th Jul 2026262 AMAQI
17th Jul 2026273 AMAQI
17th Jul 2026364 AMAQI

22°C17/28°C

17th Jul 2026535 AMAQI
17th Jul 2026506 AMAQI
17th Jul 2026517 AMAQI
17th Jul 2026498 AMAQI
17th Jul 2026449 AMAQI
17th Jul 20264210 AMAQI
17th Jul 20263811 AMAQI
17th Jul 20264412 PMAQI
17th Jul 2026351 PMAQI
17th Jul 2026442 PMAQI
17th Jul 2026383 PMAQI
17th Jul 2026224 PMAQI
17th Jul 2026205 PMAQI
17th Jul 2026206 PMAQI
17th Jul 2026227 PMAQI
17th Jul 2026278 PMAQI
17th Jul 2026259 PMAQI
17th Jul 20264210 PMAQI
17th Jul 20265811 PMAQI
18th Jul 20262512 AMAQI
18th Jul 2026601 AMAQI
18th Jul 2026212 AMAQI
18th Jul 2026233 AMAQI
18th Jul 2026544 AMAQI

21°C14/30°C

18th Jul 2026515 AMAQI
18th Jul 2026466 AMAQI
18th Jul 2026387 AMAQI
18th Jul 2026388 AMAQI
18th Jul 2026509 AMAQI
18th Jul 20264210 AMAQI
18th Jul 20264211 AMAQI
18th Jul 20262512 PMAQI
18th Jul 2026631 PMAQI
18th Jul 2026312 PMAQI
18th Jul 2026463 PMAQI
18th Jul 2026404 PMAQI
18th Jul 2026585 PMAQI
18th Jul 2026656 PMAQI
18th Jul 2026677 PMAQI
18th Jul 2026638 PMAQI
18th Jul 2026629 PMAQI
18th Jul 20266410 PMAQI
18th Jul 20267411 PMAQI
19th Jul 20266612 AMAQI
19th Jul 2026581 AMAQI
19th Jul 2026442 AMAQI
19th Jul 2026423 AMAQI
19th Jul 2026314 AMAQI

19°C17/23°C

19th Jul 2026345 AMAQI
19th Jul 2026446 AMAQI
19th Jul 2026337 AMAQI
19th Jul 2026468 AMAQI
19th Jul 2026429 AMAQI
19th Jul 20263610 AMAQI
19th Jul 20262911 AMAQI
19th Jul 20265012 PMAQI
19th Jul 2026441 PMAQI
19th Jul 2026582 PMAQI
19th Jul 2026743 PMAQI
19th Jul 2026744 PMAQI
19th Jul 2026515 PMAQI
19th Jul 2026516 PMAQI
19th Jul 2026247 PMAQI
19th Jul 2026278 PMAQI
19th Jul 2026269 PMAQI
19th Jul 20262510 PMAQI
19th Jul 20262211 PMAQI
20th Jul 20266612 AMAQI
20th Jul 2026621 AMAQI
20th Jul 2026692 AMAQI
20th Jul 2026643 AMAQI
20th Jul 2026664 AMAQI

20°C14/25°C

20th Jul 2026445 AMAQI
20th Jul 2026546 AMAQI
20th Jul 2026507 AMAQI
20th Jul 2026248 AMAQI
20th Jul 2026309 AMAQI
20th Jul 20262510 AMAQI
20th Jul 20262811 AMAQI
20th Jul 20262912 PMAQI
20th Jul 2026241 PMAQI
20th Jul 2026442 PMAQI
20th Jul 2026363 PMAQI
20th Jul 2026284 PMAQI
20th Jul 2026235 PMAQI
20th Jul 2026386 PMAQI
20th Jul 2026247 PMAQI
20th Jul 2026368 PMAQI
20th Jul 2026389 PMAQI
20th Jul 20264210 PMAQI
21st Jul 20264012 AMAQI
21st Jul 2026341 AMAQI
21st Jul 2026252 AMAQI
21st Jul 2026343 AMAQI
21st Jul 2026324 AMAQI

21°C14/30°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 20265411 AMAQI
21st Jul 20262512 PMAQI
21st Jul 2026421 PMAQI
21st Jul 2026522 PMAQI
21st Jul 2026543 PMAQI
21st Jul 2026544 PMAQI
21st Jul 2026535 PMAQI
21st Jul 2026506 PMAQI
21st Jul 2026487 PMAQI
21st Jul 2026428 PMAQI
21st Jul 2026469 PMAQI
21st Jul 20264610 PMAQI
21st Jul 20263811 PMAQI
22nd Jul 20264012 AMAQI
22nd Jul 2026401 AMAQI
22nd Jul 2026402 AMAQI
22nd Jul 2026363 AMAQI
22nd Jul 2026384 AMAQI

23°C18/30°C

22nd Jul 2026365 AMAQI
22nd Jul 2026386 AMAQI
22nd Jul 2026277 AMAQI
22nd Jul 2026218 AMAQI
22nd Jul 2026269 AMAQI
22nd Jul 20262610 AMAQI
22nd Jul 20262111 AMAQI
22nd Jul 20262112 PMAQI
22nd Jul 2026251 PMAQI
22nd Jul 2026252 PMAQI
22nd Jul 2026243 PMAQI
22nd Jul 2026334 PMAQI
22nd Jul 2026235 PMAQI
22nd Jul 2026256 PMAQI
22nd Jul 2026167 PMAQI
22nd Jul 2026268 PMAQI
22nd Jul 2026169 PMAQI
22nd Jul 20262510 PMAQI
22nd Jul 20261411 PMAQI
23rd Jul 20261812 AMAQI
23rd Jul 2026251 AMAQI
23rd Jul 2026462 AMAQI
23rd Jul 2026323 AMAQI
23rd Jul 2026254 AMAQI

20°C15/23°C

23rd Jul 2026145 AMAQI
23rd Jul 2026246 AMAQI
23rd Jul 2026167 AMAQI
23rd Jul 202688 AMAQI
23rd Jul 202689 AMAQI
23rd Jul 20261810 AMAQI
23rd Jul 2026811 AMAQI
23rd Jul 20262512 PMAQI
23rd Jul 2026241 PMAQI
23rd Jul 2026242 PMAQI
23rd Jul 2026183 PMAQI
23rd Jul 2026264 PMAQI
23rd Jul 2026425 PMAQI
23rd Jul 2026446 PMAQI
23rd Jul 2026647 PMAQI
23rd Jul 2026278 PMAQI
23rd Jul 2026259 PMAQI
23rd Jul 20262310 PMAQI
23rd Jul 20262511 PMAQI
24th Jul 20262512 AMAQI
24th Jul 2026291 AMAQI
24th Jul 2026252 AMAQI
24th Jul 2026363 AMAQI
24th Jul 2026264 AMAQI

19°C12/28°C

24th Jul 2026265 AMAQI
24th Jul 2026256 AMAQI
24th Jul 2026367 AMAQI
24th Jul 2026258 AMAQI
24th Jul 2026279 AMAQI
24th Jul 20262310 AMAQI
24th Jul 20263011 AMAQI
24th Jul 20263212 PMAQI
24th Jul 2026301 PMAQI
24th Jul 2026252 PMAQI
24th Jul 2026363 PMAQI
24th Jul 2026304 PMAQI
24th Jul 2026225 PMAQI
24th Jul 2026366 PMAQI
24th Jul 2026217 PMAQI
24th Jul 2026388 PMAQI
24th Jul 2026409 PMAQI
24th Jul 20264210 PMAQI
24th Jul 20264411 PMAQI
25th Jul 20264212 AMAQI
25th Jul 2026421 AMAQI
25th Jul 2026462 AMAQI
25th Jul 2026463 AMAQI
25th Jul 2026484 AMAQI

22°C15/29°C

25th Jul 2026465 AMAQI
25th Jul 2026466 AMAQI
25th Jul 2026507 AMAQI
25th Jul 2026508 AMAQI
25th Jul 2026489 AMAQI
25th Jul 20264410 AMAQI
25th Jul 20264011 AMAQI
25th Jul 20264612 PMAQI
25th Jul 2026441 PMAQI
25th Jul 2026402 PMAQI
25th Jul 2026293 PMAQI
25th Jul 2026404 PMAQI
25th Jul 2026385 PMAQI
25th Jul 2026216 PMAQI
25th Jul 2026307 PMAQI
25th Jul 2026278 PMAQI
25th Jul 2026319 PMAQI
25th Jul 20263310 PMAQI
25th Jul 20263811 PMAQI
26th Jul 20263812 AMAQI
26th Jul 2026461 AMAQI
26th Jul 2026482 AMAQI
26th Jul 2026463 AMAQI
26th Jul 2026464 AMAQI

24°C16/33°C

26th Jul 2026425 AMAQI
26th Jul 2026446 AMAQI
26th Jul 2026487 AMAQI
26th Jul 2026448 AMAQI
26th Jul 2026469 AMAQI
26th Jul 20264410 AMAQI
26th Jul 20264811 AMAQI
26th Jul 20264412 PMAQI
26th Jul 2026441 PMAQI
26th Jul 2026422 PMAQI
26th Jul 2026383 PMAQI
26th Jul 2026424 PMAQI
26th Jul 2026385 PMAQI
26th Jul 2026406 PMAQI
26th Jul 2026297 PMAQI
26th Jul 2026318 PMAQI
26th Jul 2026339 PMAQI
26th Jul 20262710 PMAQI
26th Jul 20262911 PMAQI
27th Jul 20262912 AMAQI
27th Jul 2026291 AMAQI
27th Jul 2026252 AMAQI
27th Jul 2026313 AMAQI
27th Jul 2026364 AMAQI

25°C17/33°C

27th Jul 2026275 AMAQI
27th Jul 2026276 AMAQI
27th Jul 2026487 AMAQI
27th Jul 2026428 AMAQI
27th Jul 2026449 AMAQI
27th Jul 20264010 AMAQI
27th Jul 20264211 AMAQI
27th Jul 20264412 PMAQI
27th Jul 2026421 PMAQI
27th Jul 2026442 PMAQI
27th Jul 2026443 PMAQI
27th Jul 2026484 PMAQI
27th Jul 2026425 PMAQI
27th Jul 2026466 PMAQI
27th Jul 2026467 PMAQI
27th Jul 2026448 PMAQI
27th Jul 2026449 PMAQI
27th Jul 20264410 PMAQI
27th Jul 20264811 PMAQI
28th Jul 20264912 AMAQI
28th Jul 2026461 AMAQI
28th Jul 2026462 AMAQI
28th Jul 2026463 AMAQI
28th Jul 2026514 AMAQI

25°C19/33°C

28th Jul 2026485 AMAQI
28th Jul 2026516 AMAQI
28th Jul 2026497 AMAQI
28th Jul 2026488 AMAQI
28th Jul 2026499 AMAQI
28th Jul 20264910 AMAQI
28th Jul 20265011 AMAQI
28th Jul 20265212 PMAQI
28th Jul 2026541 PMAQI
28th Jul 2026532 PMAQI
28th Jul 2026553 PMAQI
28th Jul 2026554 PMAQI
28th Jul 2026555 PMAQI
28th Jul 2026516 PMAQI
28th Jul 2026537 PMAQI
28th Jul 2026538 PMAQI
28th Jul 2026499 PMAQI
28th Jul 20265210 PMAQI
28th Jul 20264911 PMAQI
29th Jul 20265112 AMAQI
29th Jul 2026481 AMAQI
29th Jul 2026502 AMAQI
29th Jul 2026493 AMAQI
29th Jul 2026464 AMAQI

23°C18/28°C

29th Jul 2026425 AMAQI
29th Jul 2026386 AMAQI
29th Jul 2026367 AMAQI
29th Jul 2026368 AMAQI
29th Jul 2026349 AMAQI
29th Jul 20263410 AMAQI
29th Jul 20263211 AMAQI
29th Jul 20262912 PMAQI
29th Jul 2026381 PMAQI
29th Jul 2026382 PMAQI
29th Jul 2026463 PMAQI
29th Jul 2026234 PMAQI
29th Jul 2026365 PMAQI
29th Jul 2026406 PMAQI
29th Jul 2026407 PMAQI
29th Jul 2026428 PMAQI
29th Jul 2026389 PMAQI
29th Jul 20264210 PMAQI
29th Jul 20263611 PMAQI
30th Jul 20264212 AMAQI
30th Jul 2026421 AMAQI
30th Jul 2026362 AMAQI
30th Jul 2026423 AMAQI
30th Jul 2026324 AMAQI

22°C20/28°C

30th Jul 2026255 AMAQI
5 AM
30th Jul 2026236 AMAQI
30th Jul 2026237 AMAQI
30th Jul 2026368 AMAQI
30th Jul 2026409 AMAQI
30th Jul 20264010 AMAQI
30th Jul 20264011 AMAQI
30th Jul 20264212 PMAQI
12 PM
30th Jul 2026401 PMAQI
30th Jul 2026252 PMAQI
30th Jul 2026293 PMAQI
30th Jul 2026274 PMAQI
30th Jul 2026195 PMAQI
30th Jul 2026256 PMAQI
30th Jul 2026387 PMAQI
30th Jul 2026428 PMAQI
8 PM
30th Jul 2026389 PMAQI
30th Jul 20262310 PMAQI
30th Jul 20264011 PMAQI
12 AM
4 AM

23°C18/28°C

Day time
Avg. Highest Time
5 AM - 6 PM

35AQI

14 hours / Day
420 hours / Month
Avg. Lowest Time
7 PM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 6 PM (Avg. 35), while the lowest AQI was between 7 PM to 7 PM (Avg. 33).
Night time
Avg. Highest Time
4 AM

36AQI

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

32AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 4 AM (Avg. 36), while the lowest AQI was between 12 AM to 12 AM (Avg. 32).

2026 Days Vs Air Quality

Chacnier, Longueuil, Quebec, Canada

2026

92%

191

8%

16

Total number of days with different AQI categories in last 211 days in 2026 (154 days remaining)

Good
191 Days
Moderate
16 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 92%

Health Risk Level:

Very Low

In 2026, 92% of 211 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

Chacnier, Longueuil, 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
17AQI (US)
2nd January 2026
35AQI (US)
3rd January 2026
19AQI (US)
4th January 2026
51AQI (US)
5th January 2026
46AQI (US)
6th January 2026
59AQI (US)
7th January 2026
59AQI (US)
8th January 2026
70AQI (US)
9th January 2026
45AQI (US)
10th January 2026
17AQI (US)
11th January 2026
17AQI (US)
12th January 2026
18AQI (US)
13th January 2026
53AQI (US)
14th January 2026
42AQI (US)
15th January 2026
35AQI (US)
16th January 2026
16AQI (US)
17th January 2026
41AQI (US)
18th January 2026
36AQI (US)
19th January 2026
50AQI (US)
20th January 2026
23AQI (US)
21st January 2026
34AQI (US)
22nd January 2026
50AQI (US)
23rd January 2026
54AQI (US)
24th January 2026
49AQI (US)
25th January 2026
48AQI (US)
26th January 2026
48AQI (US)
27th January 2026
44AQI (US)
28th January 2026
47AQI (US)
29th January 2026
52AQI (US)
30th January 2026
49AQI (US)
31st January 2026
45AQI (US)
1st February 2026
48AQI (US)
2nd February 2026
49AQI (US)
3rd February 2026
50AQI (US)
4th February 2026
54AQI (US)
5th February 2026
50AQI (US)
6th February 2026
41AQI (US)
7th February 2026
39AQI (US)
8th February 2026
46AQI (US)
9th February 2026
46AQI (US)
10th February 2026
47AQI (US)
11th February 2026
47AQI (US)
12th February 2026
44AQI (US)
13th February 2026
51AQI (US)
14th February 2026
49AQI (US)
15th February 2026
42AQI (US)
16th February 2026
45AQI (US)
17th February 2026
45AQI (US)
18th February 2026
43AQI (US)
19th February 2026
40AQI (US)
20th February 2026
43AQI (US)
21st February 2026
35AQI (US)
22nd February 2026
35AQI (US)
23rd February 2026
40AQI (US)
24th February 2026
44AQI (US)
25th February 2026
42AQI (US)
26th February 2026
35AQI (US)
27th February 2026
35AQI (US)
28th February 2026
38AQI (US)
1st March 2026
42AQI (US)
2nd March 2026
53AQI (US)
3rd March 2026
47AQI (US)
4th March 2026
45AQI (US)
5th March 2026
43AQI (US)
6th March 2026
39AQI (US)
7th March 2026
40AQI (US)
8th March 2026
39AQI (US)
9th March 2026
41AQI (US)
10th March 2026
34AQI (US)
11th March 2026
43AQI (US)
12th March 2026
42AQI (US)
13th March 2026
40AQI (US)
14th March 2026
37AQI (US)
15th March 2026
36AQI (US)
16th March 2026
37AQI (US)
17th March 2026
35AQI (US)
18th March 2026
33AQI (US)
19th March 2026
32AQI (US)
20th March 2026
37AQI (US)
21st March 2026
36AQI (US)
22nd March 2026
36AQI (US)
23rd March 2026
41AQI (US)
24th March 2026
36AQI (US)
25th March 2026
34AQI (US)
26th March 2026
30AQI (US)
27th March 2026
30AQI (US)
28th March 2026
35AQI (US)
29th March 2026
31AQI (US)
30th March 2026
28AQI (US)
31st March 2026
25AQI (US)
1st April 2026
33AQI (US)
2nd April 2026
34AQI (US)
3rd April 2026
28AQI (US)
4th April 2026
32AQI (US)
5th April 2026
29AQI (US)
6th April 2026
28AQI (US)
7th April 2026
27AQI (US)
8th April 2026
31AQI (US)
9th April 2026
28AQI (US)
10th April 2026
31AQI (US)
11th April 2026
33AQI (US)
12th April 2026
28AQI (US)
13th April 2026
34AQI (US)
14th April 2026
33AQI (US)
15th April 2026
34AQI (US)
16th April 2026
30AQI (US)
17th April 2026
18th April 2026
33AQI (US)
19th April 2026
33AQI (US)
20th April 2026
30AQI (US)
21st April 2026
28AQI (US)
22nd April 2026
23rd April 2026
24AQI (US)
24th April 2026
28AQI (US)
25th April 2026
32AQI (US)
26th April 2026
33AQI (US)
27th April 2026
29AQI (US)
28th April 2026
25AQI (US)
29th April 2026
24AQI (US)
30th April 2026
27AQI (US)
1st May 2026
27AQI (US)
2nd May 2026
24AQI (US)
3rd May 2026
21AQI (US)
4th May 2026
30AQI (US)
5th May 2026
33AQI (US)
6th May 2026
31AQI (US)
7th May 2026
28AQI (US)
8th May 2026
28AQI (US)
9th May 2026
10th May 2026
34AQI (US)
11th May 2026
32AQI (US)
12th May 2026
29AQI (US)
13th May 2026
29AQI (US)
14th May 2026
25AQI (US)
15th May 2026
45AQI (US)
16th May 2026
53AQI (US)
17th May 2026
56AQI (US)
18th May 2026
57AQI (US)
19th May 2026
55AQI (US)
20th May 2026
49AQI (US)
21st May 2026
44AQI (US)
22nd May 2026
44AQI (US)
23rd May 2026
51AQI (US)
24th May 2026
49AQI (US)
25th May 2026
46AQI (US)
26th May 2026
28AQI (US)
27th May 2026
26AQI (US)
28th May 2026
19AQI (US)
29th May 2026
19AQI (US)
30th May 2026
20AQI (US)
31st May 2026
26AQI (US)
1st June 2026
27AQI (US)
2nd June 2026
24AQI (US)
3rd June 2026
23AQI (US)
4th June 2026
24AQI (US)
5th June 2026
27AQI (US)
6th June 2026
25AQI (US)
7th June 2026
19AQI (US)
8th June 2026
25AQI (US)
9th June 2026
24AQI (US)
10th June 2026
27AQI (US)
11th June 2026
27AQI (US)
12th June 2026
26AQI (US)
13th June 2026
22AQI (US)
14th June 2026
23AQI (US)
15th June 2026
23AQI (US)
16th June 2026
25AQI (US)
17th June 2026
26AQI (US)
18th June 2026
25AQI (US)
19th June 2026
23AQI (US)
20th June 2026
23AQI (US)
21st June 2026
21AQI (US)
22nd June 2026
24AQI (US)
23rd June 2026
22AQI (US)
24th June 2026
24AQI (US)
25th June 2026
25AQI (US)
26th June 2026
27AQI (US)
27th June 2026
28AQI (US)
28th June 2026
28AQI (US)
29th June 2026
26AQI (US)
30th June 2026
26AQI (US)
1st July 2026
27AQI (US)
2nd July 2026
27AQI (US)
3rd July 2026
28AQI (US)
4th July 2026
26AQI (US)
5th July 2026
27AQI (US)
6th July 2026
29AQI (US)
7th July 2026
31AQI (US)
8th July 2026
28AQI (US)
9th July 2026
28AQI (US)
10th July 2026
33AQI (US)
11th July 2026
31AQI (US)
12th July 2026
33AQI (US)
13th July 2026
32AQI (US)
14th July 2026
33AQI (US)
15th July 2026
37AQI (US)
16th July 2026
38AQI (US)
17th July 2026
36AQI (US)
18th July 2026
48AQI (US)
19th July 2026
43AQI (US)
20th July 2026
41AQI (US)
21st July 2026
42AQI (US)
22nd July 2026
28AQI (US)
23rd July 2026
25AQI (US)
24th July 2026
30AQI (US)
25th July 2026
40AQI (US)
26th July 2026
41AQI (US)
27th July 2026
40AQI (US)
28th July 2026
51AQI (US)
29th July 2026
39AQI (US)
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

41AQI (US)

44AQI (US)

37AQI (US)

30AQI (US)

35AQI (US)

25AQI (US)

34AQI (US)

No. of days

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

202635AQI (US)

24
7
26
2
30
1
28
25
5
30
28
1
191
16

Highest AQI (US) recorded in

February

44AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202533AQI (US)

29
2
26
2
28
3
30
31
25
5
26
5
23
8
30
25
6
26
4
25
6
324
41

Highest AQI (US) recorded in

July

40AQI (US)

Lowest AQI (US) recorded in

April

23AQI (US)

202431AQI (US)

21
1
17
5
24
2
27
1
24
1
27
3
29
2
23
7
22
7
31
30
27
3
1
302
32
1

Highest AQI (US) recorded in

September

39AQI (US)

Lowest AQI (US) recorded in

November

24AQI (US)

202336AQI (US)

19
4
11
5
20
4
21
3
24
2
8
5
2
1
17
7
1
1
21
2
2
6
14
24
22
5
203
43
3
1
1

Highest AQI (US) recorded in

June

56AQI (US)

Lowest AQI (US) recorded in

October

24AQI (US)

202232AQI (US)

12
11
14
3
19
2
10
19
1
22
2
13
3
4
20
17
2
14
4
17
181
28

Highest AQI (US) recorded in

January

46AQI (US)

Lowest AQI (US) recorded in

September

21AQI (US)

202130AQI (US)

22
4
18
8
19
2
20
24
3
21
3
18
3
15
7
23
21
1
23
3
21
245
34

Highest AQI (US) recorded in

February

42AQI (US)

Lowest AQI (US) recorded in

September

24AQI (US)

202023AQI (US)

7
17
13
7
1
23
20
21
1
29
20
4
23
180
6

Highest AQI (US) recorded in

November

32AQI (US)

Lowest AQI (US) recorded in

March

16AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2023(Avg.)
36AQI (US)
Least Polluted Year Recorded
2020(Avg.)
23AQI (US)

Chacnier's annual 2026 AQI (US) (35) shows an average percentage change of 15.7% (worsened AQI (US)) compared to previous years: 2020 (23), 2021 (30), 2022 (32), 2023 (36), 2024 (31), 2025 (33).