Frelighsburg Site B, Dunham, 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
Frelighsburg Site B, Dunham, Quebec, Canada
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
3rd Aug 2025
83AQILowest AQI recorded on
1st Aug 2025
28AQISame Day Analysis (3rd August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 83 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Frelighsburg Site B, Dunham, Quebec, Canada
AQI
Day
Night
.
5 AM3rd Aug 2025
8 PM
4 AM4th Aug 2025
Day time
Avg. Highest Time
6PM3rd Aug
140AQI
Avg. Lowest Time
10AM3rd Aug
63AQI
Night time
Avg. Highest Time
12AM4th Aug
108AQI
Avg. Lowest Time
4AM4th Aug
74AQI
In the last 24 hours,
Frelighsburg Site B's AQI reached its highest point of 140 at 6 PM during the Day, while the lowest point, 63, was recorded at 10 AM during the Day between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Frelighsburg Site B, Dunham, Quebec, Canada
JulAug
05th - 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 - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
5th Jul 2025305 AMAQI
5th Jul 2025306 AMAQI
5th Jul 2025307 AMAQI
5th Jul 2025308 AMAQI
5th Jul 2025309 AMAQI
5th Jul 20253210 AMAQI
5th Jul 20253111 AMAQI
5th Jul 20253112 PMAQI
5th Jul 2025321 PMAQI
5th Jul 2025322 PMAQI
5th Jul 2025323 PMAQI
5th Jul 2025334 PMAQI
5th Jul 2025335 PMAQI
5th Jul 2025336 PMAQI
5th Jul 2025337 PMAQI
5th Jul 2025338 PMAQI
5th Jul 2025329 PMAQI
5th Jul 20253010 PMAQI
5th Jul 20253411 PMAQI
6th Jul 20253412 AMAQI
6th Jul 2025361 AMAQI
6th Jul 2025382 AMAQI
6th Jul 2025383 AMAQI
6th Jul 2025364 AMAQI
21°C12/29°C
6th Jul 2025375 AMAQI
6th Jul 2025406 AMAQI
6th Jul 2025387 AMAQI
6th Jul 2025408 AMAQI
6th Jul 2025429 AMAQI
6th Jul 20254210 AMAQI
6th Jul 20254411 AMAQI
6th Jul 20254312 PMAQI
6th Jul 2025441 PMAQI
6th Jul 2025442 PMAQI
6th Jul 2025443 PMAQI
6th Jul 2025484 PMAQI
6th Jul 2025445 PMAQI
6th Jul 2025466 PMAQI
6th Jul 2025487 PMAQI
6th Jul 2025468 PMAQI
6th Jul 2025449 PMAQI
6th Jul 20254410 PMAQI
6th Jul 20254411 PMAQI
7th Jul 20254812 AMAQI
7th Jul 2025471 AMAQI
7th Jul 2025452 AMAQI
7th Jul 2025463 AMAQI
7th Jul 2025474 AMAQI
26°C19/33°C
7th Jul 2025465 AMAQI
7th Jul 2025476 AMAQI
7th Jul 2025457 AMAQI
7th Jul 2025488 AMAQI
7th Jul 2025479 AMAQI
7th Jul 20254610 AMAQI
7th Jul 20254611 AMAQI
7th Jul 20254012 PMAQI
7th Jul 2025381 PMAQI
7th Jul 2025372 PMAQI
7th Jul 2025353 PMAQI
7th Jul 2025364 PMAQI
7th Jul 2025405 PMAQI
7th Jul 2025386 PMAQI
7th Jul 2025377 PMAQI
7th Jul 2025378 PMAQI
7th Jul 2025419 PMAQI
7th Jul 20254010 PMAQI
7th Jul 20253211 PMAQI
8th Jul 20253112 AMAQI
8th Jul 2025351 AMAQI
8th Jul 2025312 AMAQI
8th Jul 2025243 AMAQI
8th Jul 2025234 AMAQI
24°C17/33°C
8th Jul 2025245 AMAQI
8th Jul 2025226 AMAQI
8th Jul 2025247 AMAQI
8th Jul 2025248 AMAQI
8th Jul 2025259 AMAQI
8th Jul 20252610 AMAQI
8th Jul 20252811 AMAQI
8th Jul 20252812 PMAQI
8th Jul 2025281 PMAQI
8th Jul 2025292 PMAQI
8th Jul 2025283 PMAQI
8th Jul 2025294 PMAQI
8th Jul 2025305 PMAQI
8th Jul 2025306 PMAQI
8th Jul 2025297 PMAQI
8th Jul 2025288 PMAQI
8th Jul 2025269 PMAQI
8th Jul 20252610 PMAQI
8th Jul 20252711 PMAQI
9th Jul 20252712 AMAQI
9th Jul 2025281 AMAQI
9th Jul 2025292 AMAQI
9th Jul 2025283 AMAQI
9th Jul 2025304 AMAQI
20°C16/26°C
9th Jul 2025305 AMAQI
9th Jul 2025306 AMAQI
9th Jul 2025287 AMAQI
9th Jul 2025288 AMAQI
9th Jul 2025319 AMAQI
9th Jul 20253210 AMAQI
9th Jul 20253311 AMAQI
9th Jul 20253412 PMAQI
9th Jul 2025331 PMAQI
9th Jul 2025332 PMAQI
9th Jul 2025333 PMAQI
9th Jul 2025354 PMAQI
9th Jul 2025335 PMAQI
9th Jul 2025326 PMAQI
9th Jul 2025337 PMAQI
9th Jul 2025348 PMAQI
9th Jul 2025319 PMAQI
9th Jul 20253310 PMAQI
9th Jul 20253311 PMAQI
10th Jul 20253512 AMAQI
10th Jul 2025351 AMAQI
10th Jul 2025392 AMAQI
10th Jul 2025383 AMAQI
10th Jul 2025364 AMAQI
21°C13/28°C
10th Jul 2025365 AMAQI
10th Jul 2025346 AMAQI
10th Jul 2025347 AMAQI
10th Jul 2025348 AMAQI
10th Jul 2025379 AMAQI
10th Jul 20253610 AMAQI
10th Jul 20253711 AMAQI
10th Jul 20253812 PMAQI
10th Jul 2025371 PMAQI
10th Jul 2025362 PMAQI
10th Jul 2025363 PMAQI
10th Jul 2025374 PMAQI
10th Jul 2025375 PMAQI
10th Jul 2025376 PMAQI
10th Jul 2025367 PMAQI
10th Jul 2025388 PMAQI
10th Jul 2025359 PMAQI
10th Jul 20253610 PMAQI
10th Jul 20253411 PMAQI
11th Jul 20253412 AMAQI
11th Jul 2025341 AMAQI
11th Jul 2025352 AMAQI
11th Jul 2025323 AMAQI
11th Jul 2025324 AMAQI
23°C17/30°C
11th Jul 2025325 AMAQI
11th Jul 2025316 AMAQI
11th Jul 2025327 AMAQI
11th Jul 2025338 AMAQI
11th Jul 2025349 AMAQI
11th Jul 20253410 AMAQI
11th Jul 20253611 AMAQI
11th Jul 20253812 PMAQI
11th Jul 2025381 PMAQI
11th Jul 2025402 PMAQI
11th Jul 2025413 PMAQI
11th Jul 2025404 PMAQI
11th Jul 2025405 PMAQI
11th Jul 2025396 PMAQI
11th Jul 2025387 PMAQI
11th Jul 2025408 PMAQI
11th Jul 2025359 PMAQI
11th Jul 20253710 PMAQI
11th Jul 20254011 PMAQI
12th Jul 20254012 AMAQI
12th Jul 2025441 AMAQI
12th Jul 2025432 AMAQI
12th Jul 2025463 AMAQI
12th Jul 2025444 AMAQI
24°C18/32°C
12th Jul 2025445 AMAQI
12th Jul 2025446 AMAQI
12th Jul 2025437 AMAQI
12th Jul 2025448 AMAQI
12th Jul 2025439 AMAQI
12th Jul 20254210 AMAQI
12th Jul 20254211 AMAQI
12th Jul 20254212 PMAQI
12th Jul 2025411 PMAQI
12th Jul 2025402 PMAQI
12th Jul 2025403 PMAQI
12th Jul 2025404 PMAQI
12th Jul 2025415 PMAQI
12th Jul 2025416 PMAQI
12th Jul 2025437 PMAQI
12th Jul 2025428 PMAQI
12th Jul 2025449 PMAQI
12th Jul 20254310 PMAQI
12th Jul 20254011 PMAQI
13th Jul 20254012 AMAQI
13th Jul 2025411 AMAQI
13th Jul 2025402 AMAQI
13th Jul 2025363 AMAQI
13th Jul 2025374 AMAQI
26°C19/33°C
13th Jul 2025355 AMAQI
13th Jul 2025386 AMAQI
13th Jul 2025367 AMAQI
13th Jul 2025358 AMAQI
13th Jul 2025369 AMAQI
13th Jul 20253410 AMAQI
13th Jul 20253611 AMAQI
13th Jul 20253612 PMAQI
13th Jul 2025351 PMAQI
13th Jul 2025352 PMAQI
13th Jul 2025353 PMAQI
13th Jul 2025354 PMAQI
13th Jul 2025345 PMAQI
13th Jul 2025346 PMAQI
13th Jul 2025327 PMAQI
13th Jul 2025348 PMAQI
13th Jul 2025369 PMAQI
13th Jul 20253810 PMAQI
13th Jul 20254411 PMAQI
14th Jul 20254712 AMAQI
14th Jul 2025431 AMAQI
14th Jul 2025452 AMAQI
14th Jul 2025333 AMAQI
14th Jul 2025344 AMAQI
25°C23/31°C
14th Jul 2025345 AMAQI
14th Jul 2025326 AMAQI
14th Jul 2025327 AMAQI
14th Jul 2025368 AMAQI
14th Jul 2025329 AMAQI
14th Jul 20253310 AMAQI
14th Jul 20253111 AMAQI
14th Jul 20253212 PMAQI
14th Jul 2025341 PMAQI
14th Jul 2025392 PMAQI
14th Jul 2025403 PMAQI
14th Jul 2025374 PMAQI
14th Jul 2025345 PMAQI
14th Jul 2025336 PMAQI
14th Jul 2025367 PMAQI
14th Jul 2025388 PMAQI
14th Jul 2025349 PMAQI
14th Jul 20253610 PMAQI
14th Jul 20253911 PMAQI
15th Jul 20254212 AMAQI
15th Jul 2025351 AMAQI
15th Jul 2025422 AMAQI
15th Jul 2025553 AMAQI
15th Jul 2025524 AMAQI
26°C22/29°C
15th Jul 2025525 AMAQI
15th Jul 2025586 AMAQI
15th Jul 2025667 AMAQI
15th Jul 2025648 AMAQI
15th Jul 2025599 AMAQI
15th Jul 20255810 AMAQI
15th Jul 20255911 AMAQI
15th Jul 20256012 PMAQI
15th Jul 2025621 PMAQI
15th Jul 2025622 PMAQI
15th Jul 2025623 PMAQI
15th Jul 2025584 PMAQI
15th Jul 2025625 PMAQI
15th Jul 2025626 PMAQI
15th Jul 2025597 PMAQI
15th Jul 2025588 PMAQI
15th Jul 2025569 PMAQI
15th Jul 20255810 PMAQI
15th Jul 20255811 PMAQI
16th Jul 20255812 AMAQI
16th Jul 2025571 AMAQI
16th Jul 2025572 AMAQI
16th Jul 2025573 AMAQI
16th Jul 2025564 AMAQI
26°C19/33°C
16th Jul 2025565 AMAQI
16th Jul 2025586 AMAQI
16th Jul 2025607 AMAQI
16th Jul 2025618 AMAQI
16th Jul 2025629 AMAQI
16th Jul 20256310 AMAQI
16th Jul 20256011 AMAQI
16th Jul 20255912 PMAQI
16th Jul 2025601 PMAQI
16th Jul 2025612 PMAQI
16th Jul 2025613 PMAQI
16th Jul 2025614 PMAQI
16th Jul 2025625 PMAQI
16th Jul 2025636 PMAQI
16th Jul 2025637 PMAQI
16th Jul 2025648 PMAQI
16th Jul 2025629 PMAQI
16th Jul 20256010 PMAQI
16th Jul 20256011 PMAQI
17th Jul 20256012 AMAQI
17th Jul 2025591 AMAQI
17th Jul 2025602 AMAQI
17th Jul 2025593 AMAQI
17th Jul 2025574 AMAQI
27°C20/35°C
17th Jul 2025585 AMAQI
17th Jul 2025546 AMAQI
17th Jul 2025557 AMAQI
17th Jul 2025528 AMAQI
17th Jul 2025529 AMAQI
17th Jul 20254910 AMAQI
17th Jul 20254711 AMAQI
17th Jul 20254612 PMAQI
17th Jul 2025501 PMAQI
17th Jul 2025482 PMAQI
17th Jul 2025383 PMAQI
17th Jul 2025384 PMAQI
17th Jul 2025395 PMAQI
17th Jul 2025396 PMAQI
17th Jul 2025397 PMAQI
17th Jul 2025378 PMAQI
17th Jul 2025469 PMAQI
17th Jul 20254410 PMAQI
17th Jul 20253311 PMAQI
18th Jul 20253412 AMAQI
18th Jul 2025291 AMAQI
18th Jul 2025212 AMAQI
18th Jul 2025173 AMAQI
18th Jul 2025184 AMAQI
26°C18/30°C
18th Jul 2025165 AMAQI
18th Jul 2025156 AMAQI
18th Jul 2025167 AMAQI
18th Jul 2025168 AMAQI
18th Jul 2025179 AMAQI
18th Jul 20251810 AMAQI
18th Jul 20251811 AMAQI
18th Jul 20251912 PMAQI
18th Jul 2025201 PMAQI
18th Jul 2025202 PMAQI
18th Jul 2025203 PMAQI
18th Jul 2025224 PMAQI
18th Jul 2025225 PMAQI
18th Jul 2025236 PMAQI
18th Jul 2025247 PMAQI
18th Jul 2025248 PMAQI
18th Jul 2025209 PMAQI
18th Jul 20252010 PMAQI
18th Jul 20252511 PMAQI
19th Jul 20252612 AMAQI
19th Jul 2025271 AMAQI
19th Jul 2025252 AMAQI
19th Jul 2025243 AMAQI
19th Jul 2025244 AMAQI
20°C15/26°C
19th Jul 2025265 AMAQI
19th Jul 2025266 AMAQI
19th Jul 2025277 AMAQI
19th Jul 2025268 AMAQI
19th Jul 2025289 AMAQI
19th Jul 20252810 AMAQI
19th Jul 20252711 AMAQI
19th Jul 20252812 PMAQI
19th Jul 2025281 PMAQI
19th Jul 2025292 PMAQI
19th Jul 2025293 PMAQI
19th Jul 2025294 PMAQI
19th Jul 2025295 PMAQI
19th Jul 2025306 PMAQI
19th Jul 2025327 PMAQI
19th Jul 2025348 PMAQI
19th Jul 2025309 PMAQI
19th Jul 20252910 PMAQI
19th Jul 20253311 PMAQI
20th Jul 20253312 AMAQI
20th Jul 2025331 AMAQI
20th Jul 2025312 AMAQI
20th Jul 2025303 AMAQI
20th Jul 2025304 AMAQI
20°C12/28°C
20th Jul 2025285 AMAQI
20th Jul 2025296 AMAQI
20th Jul 2025287 AMAQI
20th Jul 2025268 AMAQI
20th Jul 2025279 AMAQI
20th Jul 20252810 AMAQI
20th Jul 20252611 AMAQI
20th Jul 20252612 PMAQI
20th Jul 2025261 PMAQI
20th Jul 2025262 PMAQI
20th Jul 2025263 PMAQI
20th Jul 2025274 PMAQI
20th Jul 2025285 PMAQI
20th Jul 2025296 PMAQI
20th Jul 2025307 PMAQI
20th Jul 2025318 PMAQI
20th Jul 2025299 PMAQI
20th Jul 20253210 PMAQI
20th Jul 20254411 PMAQI
21st Jul 20254412 AMAQI
21st Jul 2025481 AMAQI
21st Jul 2025512 AMAQI
21st Jul 2025523 AMAQI
21st Jul 2025544 AMAQI
20°C17/27°C
21st Jul 2025565 AMAQI
21st Jul 2025516 AMAQI
21st Jul 2025377 AMAQI
21st Jul 2025328 AMAQI
21st Jul 2025309 AMAQI
21st Jul 20252910 AMAQI
21st Jul 20252611 AMAQI
21st Jul 20252512 PMAQI
21st Jul 2025231 PMAQI
21st Jul 2025242 PMAQI
21st Jul 2025223 PMAQI
21st Jul 2025244 PMAQI
21st Jul 2025265 PMAQI
21st Jul 2025256 PMAQI
21st Jul 2025247 PMAQI
21st Jul 2025238 PMAQI
21st Jul 2025269 PMAQI
21st Jul 20252610 PMAQI
21st Jul 20252411 PMAQI
22nd Jul 20252412 AMAQI
22nd Jul 2025241 AMAQI
22nd Jul 2025202 AMAQI
22nd Jul 2025163 AMAQI
22nd Jul 2025164 AMAQI
17°C12/21°C
22nd Jul 2025165 AMAQI
22nd Jul 2025166 AMAQI
22nd Jul 2025157 AMAQI
22nd Jul 2025168 AMAQI
22nd Jul 2025169 AMAQI
22nd Jul 20251710 AMAQI
22nd Jul 20251711 AMAQI
22nd Jul 20251712 PMAQI
22nd Jul 2025161 PMAQI
22nd Jul 2025162 PMAQI
22nd Jul 2025163 PMAQI
22nd Jul 2025174 PMAQI
22nd Jul 2025175 PMAQI
22nd Jul 2025186 PMAQI
22nd Jul 2025177 PMAQI
22nd Jul 2025188 PMAQI
22nd Jul 2025189 PMAQI
22nd Jul 20251910 PMAQI
22nd Jul 20251811 PMAQI
23rd Jul 20251812 AMAQI
23rd Jul 2025191 AMAQI
23rd Jul 2025192 AMAQI
23rd Jul 2025203 AMAQI
23rd Jul 2025204 AMAQI
17°C9/23°C
23rd Jul 2025195 AMAQI
23rd Jul 2025196 AMAQI
23rd Jul 2025197 AMAQI
23rd Jul 2025208 AMAQI
23rd Jul 2025209 AMAQI
23rd Jul 20252010 AMAQI
23rd Jul 20252011 AMAQI
23rd Jul 20252012 PMAQI
23rd Jul 2025201 PMAQI
23rd Jul 2025192 PMAQI
23rd Jul 2025183 PMAQI
23rd Jul 2025194 PMAQI
23rd Jul 2025205 PMAQI
23rd Jul 2025216 PMAQI
23rd Jul 2025207 PMAQI
23rd Jul 2025198 PMAQI
23rd Jul 2025219 PMAQI
23rd Jul 20252210 PMAQI
23rd Jul 20252211 PMAQI
24th Jul 20252212 AMAQI
24th Jul 2025221 AMAQI
24th Jul 2025222 AMAQI
24th Jul 2025223 AMAQI
24th Jul 2025224 AMAQI
21°C14/28°C
24th Jul 2025245 AMAQI
24th Jul 2025226 AMAQI
24th Jul 2025247 AMAQI
24th Jul 2025248 AMAQI
24th Jul 2025289 AMAQI
24th Jul 20252810 AMAQI
24th Jul 20253011 AMAQI
24th Jul 20253412 PMAQI
24th Jul 2025361 PMAQI
24th Jul 2025382 PMAQI
24th Jul 2025383 PMAQI
24th Jul 2025384 PMAQI
24th Jul 2025395 PMAQI
24th Jul 2025396 PMAQI
24th Jul 2025417 PMAQI
24th Jul 2025408 PMAQI
24th Jul 2025339 PMAQI
24th Jul 20253210 PMAQI
24th Jul 20253811 PMAQI
25th Jul 20253612 AMAQI
25th Jul 2025361 AMAQI
25th Jul 2025372 AMAQI
25th Jul 2025413 AMAQI
25th Jul 2025414 AMAQI
25°C17/34°C
25th Jul 2025395 AMAQI
25th Jul 2025416 AMAQI
25th Jul 2025437 AMAQI
25th Jul 2025418 AMAQI
25th Jul 2025419 AMAQI
25th Jul 20253810 AMAQI
25th Jul 20253711 AMAQI
25th Jul 20253312 PMAQI
25th Jul 2025321 PMAQI
25th Jul 2025302 PMAQI
25th Jul 2025313 PMAQI
25th Jul 2025354 PMAQI
25th Jul 2025385 PMAQI
25th Jul 2025416 PMAQI
25th Jul 2025427 PMAQI
25th Jul 2025468 PMAQI
25th Jul 2025459 PMAQI
25th Jul 20254210 PMAQI
25th Jul 20253711 PMAQI
26th Jul 20253912 AMAQI
26th Jul 2025401 AMAQI
26th Jul 2025592 AMAQI
26th Jul 20251003 AMAQI
26th Jul 2025864 AMAQI
25°C21/28°C
26th Jul 2025735 AMAQI
26th Jul 2025716 AMAQI
26th Jul 2025857 AMAQI
26th Jul 2025768 AMAQI
26th Jul 2025749 AMAQI
26th Jul 20256110 AMAQI
26th Jul 20255611 AMAQI
26th Jul 20255812 PMAQI
26th Jul 2025581 PMAQI
26th Jul 2025642 PMAQI
26th Jul 2025613 PMAQI
26th Jul 2025664 PMAQI
26th Jul 2025665 PMAQI
26th Jul 2025646 PMAQI
26th Jul 2025657 PMAQI
26th Jul 2025658 PMAQI
26th Jul 2025609 PMAQI
26th Jul 20255910 PMAQI
26th Jul 20256111 PMAQI
27th Jul 20256212 AMAQI
27th Jul 2025621 AMAQI
27th Jul 2025662 AMAQI
27th Jul 2025703 AMAQI
27th Jul 2025744 AMAQI
22°C13/31°C
27th Jul 2025715 AMAQI
27th Jul 2025686 AMAQI
27th Jul 2025687 AMAQI
27th Jul 2025698 AMAQI
27th Jul 2025649 AMAQI
27th Jul 20256210 AMAQI
27th Jul 20256611 AMAQI
27th Jul 20256212 PMAQI
27th Jul 2025631 PMAQI
27th Jul 2025622 PMAQI
27th Jul 2025623 PMAQI
27th Jul 2025614 PMAQI
27th Jul 2025615 PMAQI
27th Jul 2025586 PMAQI
27th Jul 2025587 PMAQI
27th Jul 2025578 PMAQI
27th Jul 2025609 PMAQI
27th Jul 20256010 PMAQI
27th Jul 20255411 PMAQI
28th Jul 20255412 AMAQI
28th Jul 2025551 AMAQI
28th Jul 2025542 AMAQI
28th Jul 2025523 AMAQI
28th Jul 2025524 AMAQI
23°C19/27°C
28th Jul 2025505 AMAQI
28th Jul 2025526 AMAQI
28th Jul 2025527 AMAQI
28th Jul 2025528 AMAQI
28th Jul 2025539 AMAQI
28th Jul 20255410 AMAQI
28th Jul 20255411 AMAQI
28th Jul 20255512 PMAQI
28th Jul 2025561 PMAQI
28th Jul 2025572 PMAQI
28th Jul 2025583 PMAQI
28th Jul 2025574 PMAQI
28th Jul 2025575 PMAQI
28th Jul 2025566 PMAQI
28th Jul 2025577 PMAQI
28th Jul 2025578 PMAQI
28th Jul 2025559 PMAQI
28th Jul 20255610 PMAQI
28th Jul 20255611 PMAQI
29th Jul 20255712 AMAQI
29th Jul 2025561 AMAQI
29th Jul 2025532 AMAQI
29th Jul 2025543 AMAQI
29th Jul 2025554 AMAQI
25°C19/32°C
29th Jul 2025535 AMAQI
29th Jul 2025536 AMAQI
29th Jul 2025527 AMAQI
29th Jul 2025508 AMAQI
29th Jul 2025529 AMAQI
29th Jul 20255010 AMAQI
29th Jul 20254811 AMAQI
29th Jul 20254612 PMAQI
29th Jul 2025441 PMAQI
29th Jul 2025462 PMAQI
29th Jul 2025473 PMAQI
29th Jul 2025494 PMAQI
29th Jul 2025525 PMAQI
29th Jul 2025516 PMAQI
29th Jul 2025517 PMAQI
29th Jul 2025528 PMAQI
29th Jul 2025539 PMAQI
29th Jul 20255410 PMAQI
29th Jul 20255511 PMAQI
30th Jul 20255612 AMAQI
30th Jul 2025571 AMAQI
30th Jul 2025572 AMAQI
30th Jul 2025583 AMAQI
30th Jul 2025584 AMAQI
24°C20/28°C
30th Jul 2025595 AMAQI
30th Jul 2025596 AMAQI
30th Jul 2025617 AMAQI
30th Jul 2025608 AMAQI
30th Jul 2025609 AMAQI
30th Jul 20256010 AMAQI
30th Jul 20255911 AMAQI
30th Jul 20255912 PMAQI
30th Jul 2025581 PMAQI
30th Jul 2025622 PMAQI
30th Jul 2025623 PMAQI
30th Jul 2025624 PMAQI
30th Jul 2025615 PMAQI
30th Jul 2025616 PMAQI
30th Jul 2025617 PMAQI
30th Jul 2025618 PMAQI
30th Jul 2025619 PMAQI
30th Jul 20256110 PMAQI
30th Jul 20255811 PMAQI
31st Jul 20255912 AMAQI
31st Jul 2025581 AMAQI
31st Jul 2025602 AMAQI
31st Jul 2025673 AMAQI
31st Jul 2025694 AMAQI
23°C17/30°C
31st Jul 2025745 AMAQI
31st Jul 2025766 AMAQI
31st Jul 2025697 AMAQI
31st Jul 2025688 AMAQI
31st Jul 2025769 AMAQI
31st Jul 20256410 AMAQI
31st Jul 20256211 AMAQI
31st Jul 20256012 PMAQI
31st Jul 2025621 PMAQI
31st Jul 2025602 PMAQI
31st Jul 2025603 PMAQI
31st Jul 2025574 PMAQI
31st Jul 2025565 PMAQI
31st Jul 2025566 PMAQI
31st Jul 2025567 PMAQI
31st Jul 2025568 PMAQI
31st Jul 2025759 PMAQI
31st Jul 20256010 PMAQI
31st Jul 20254711 PMAQI
1st Aug 20254312 AMAQI
1st Aug 2025381 AMAQI
1st Aug 2025402 AMAQI
1st Aug 2025393 AMAQI
1st Aug 2025324 AMAQI
19°C14/22°C
1st Aug 2025245 AMAQI
1st Aug 2025256 AMAQI
1st Aug 2025247 AMAQI
1st Aug 2025228 AMAQI
1st Aug 2025209 AMAQI
1st Aug 20252210 AMAQI
1st Aug 20251911 AMAQI
1st Aug 20251812 PMAQI
1st Aug 2025171 PMAQI
1st Aug 2025172 PMAQI
1st Aug 2025213 PMAQI
1st Aug 2025184 PMAQI
1st Aug 2025195 PMAQI
1st Aug 2025186 PMAQI
1st Aug 2025187 PMAQI
1st Aug 2025188 PMAQI
1st Aug 2025209 PMAQI
1st Aug 20252410 PMAQI
1st Aug 20252011 PMAQI
2nd Aug 20252212 AMAQI
2nd Aug 2025231 AMAQI
2nd Aug 2025242 AMAQI
2nd Aug 2025243 AMAQI
2nd Aug 2025244 AMAQI
17°C10/25°C
2nd Aug 2025245 AMAQI
2nd Aug 2025246 AMAQI
2nd Aug 2025227 AMAQI
2nd Aug 2025238 AMAQI
2nd Aug 2025229 AMAQI
2nd Aug 20252210 AMAQI
2nd Aug 20252411 AMAQI
2nd Aug 20252812 PMAQI
2nd Aug 2025301 PMAQI
2nd Aug 2025242 PMAQI
2nd Aug 2025323 PMAQI
2nd Aug 2025444 PMAQI
2nd Aug 2025605 PMAQI
2nd Aug 2025686 PMAQI
2nd Aug 2025797 PMAQI
2nd Aug 2025818 PMAQI
2nd Aug 2025379 PMAQI
2nd Aug 20255510 PMAQI
2nd Aug 20258711 PMAQI
3rd Aug 20258012 AMAQI
3rd Aug 2025871 AMAQI
3rd Aug 2025792 AMAQI
3rd Aug 2025943 AMAQI
3rd Aug 2025814 AMAQI
19°C9/28°C
3rd Aug 2025805 AMAQI
3rd Aug 2025776 AMAQI
3rd Aug 2025787 AMAQI
3rd Aug 2025728 AMAQI
3rd Aug 2025689 AMAQI
3rd Aug 20256310 AMAQI
3rd Aug 20256611 AMAQI
3rd Aug 20257412 PMAQI
3rd Aug 2025821 PMAQI
3rd Aug 20251022 PMAQI
3rd Aug 20251043 PMAQI
3rd Aug 20251184 PMAQI
3rd Aug 20251285 PMAQI
3rd Aug 20251406 PMAQI
3rd Aug 20251177 PMAQI
3rd Aug 20251338 PMAQI
3rd Aug 2025829 PMAQI
3rd Aug 20258810 PMAQI
3rd Aug 202510111 PMAQI
4th Aug 202510812 AMAQI
4th Aug 20251011 AMAQI
4th Aug 2025942 AMAQI
4th Aug 2025823 AMAQI
4th Aug 2025744 AMAQI
22°C13/31°C
4th Aug 2025825 AMAQI
5 AM4th Aug 2025866 AMAQI
4th Aug 2025957 AMAQI
4th Aug 2025768 AMAQI
4th Aug 2025769 AMAQI
4th Aug 20258510 AMAQI
12 PM
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 PM
42AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
5 AM - 8 PM
42AQI
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. 42), while the lowest AQI was between 5 AM to 8 PM (Avg. 42).
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
Frelighsburg Site B, Dunham, Quebec, Canada
2025
88%
114
12%
16
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Good
114 DaysModerate
16 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 216 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
Frelighsburg Site B, Dunham, 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 March 2025
19AQI
19AQI
2nd March 2025
19AQI
19AQI
3rd March 2025
17AQI
17AQI
4th March 2025
19AQI
19AQI
5th March 2025
22AQI
22AQI
1st April 2025
17AQI
17AQI
2nd April 2025
17AQI
17AQI
3rd April 2025
18AQI
18AQI
4th April 2025
17AQI
17AQI
5th April 2025
19AQI
19AQI
6th April 2025
16AQI
16AQI
7th April 2025
18AQI
18AQI
8th April 2025
18AQI
18AQI
9th April 2025
16AQI
16AQI
10th April 2025
24AQI
24AQI
11th April 2025
25AQI
25AQI
12th April 2025
23AQI
23AQI
13th April 2025
21AQI
21AQI
14th April 2025
26AQI
26AQI
15th April 2025
20AQI
20AQI
16th April 2025
13AQI
13AQI
17th April 2025
16AQI
16AQI
18th April 2025
25AQI
25AQI
19th April 2025
27AQI
27AQI
20th April 2025
14AQI
14AQI
21st April 2025
15AQI
15AQI
22nd April 2025
15AQI
15AQI
23rd April 2025
12AQI
12AQI
24th April 2025
16AQI
16AQI
25th April 2025
19AQI
19AQI
26th April 2025
16AQI
16AQI
27th April 2025
11AQI
11AQI
28th April 2025
18AQI
18AQI
29th April 2025
21AQI
21AQI
30th April 2025
14AQI
14AQI
1st May 2025
20AQI
20AQI
2nd May 2025
20AQI
20AQI
3rd May 2025
14AQI
14AQI
4th May 2025
18AQI
18AQI
5th May 2025
17AQI
17AQI
6th May 2025
17AQI
17AQI
7th May 2025
17AQI
17AQI
8th May 2025
17AQI
17AQI
9th May 2025
16AQI
16AQI
10th May 2025
15AQI
15AQI
11th May 2025
16AQI
16AQI
12th May 2025
20AQI
20AQI
13th May 2025
26AQI
26AQI
14th May 2025
24AQI
24AQI
15th May 2025
24AQI
24AQI
16th May 2025
27AQI
27AQI
17th May 2025
26AQI
26AQI
18th May 2025
15AQI
15AQI
19th May 2025
12AQI
12AQI
20th May 2025
13AQI
13AQI
21st May 2025
16AQI
16AQI
22nd May 2025
12AQI
12AQI
23rd May 2025
11AQI
11AQI
24th May 2025
11AQI
11AQI
25th May 2025
14AQI
14AQI
26th May 2025
19AQI
19AQI
27th May 2025
23AQI
23AQI
28th May 2025
23AQI
23AQI
29th May 2025
20AQI
20AQI
30th May 2025
21AQI
21AQI
31st May 2025
23AQI
23AQI
1st June 2025
12AQI
12AQI
2nd June 2025
15AQI
15AQI
3rd June 2025
25AQI
25AQI
4th June 2025
46AQI
46AQI
5th June 2025
54AQI
54AQI
6th June 2025
54AQI
54AQI
7th June 2025
66AQI
66AQI
8th June 2025
66AQI
66AQI
9th June 2025
59AQI
59AQI
10th June 2025
43AQI
43AQI
11th June 2025
51AQI
51AQI
12th June 2025
60AQI
60AQI
13th June 2025
32AQI
32AQI
14th June 2025
27AQI
27AQI
15th June 2025
29AQI
29AQI
16th June 2025
33AQI
33AQI
17th June 2025
31AQI
31AQI
18th June 2025
24AQI
24AQI
19th June 2025
30AQI
30AQI
20th June 2025
24AQI
24AQI
21st June 2025
35AQI
35AQI
22nd June 2025
37AQI
37AQI
23rd June 2025
43AQI
43AQI
24th June 2025
49AQI
49AQI
25th June 2025
41AQI
41AQI
26th June 2025
29AQI
29AQI
27th June 2025
25AQI
25AQI
28th June 2025
25AQI
25AQI
29th June 2025
24AQI
24AQI
30th June 2025
29AQI
29AQI
1st July 2025
31AQI
31AQI
2nd July 2025
31AQI
31AQI
3rd July 2025
42AQI
42AQI
4th July 2025
31AQI
31AQI
5th July 2025
31AQI
31AQI
6th July 2025
41AQI
41AQI
7th July 2025
43AQI
43AQI
8th July 2025
28AQI
28AQI
9th July 2025
30AQI
30AQI
10th July 2025
36AQI
36AQI
11th July 2025
36AQI
36AQI
12th July 2025
42AQI
42AQI
13th July 2025
37AQI
37AQI
14th July 2025
38AQI
38AQI
15th July 2025
54AQI
54AQI
16th July 2025
59AQI
59AQI
17th July 2025
50AQI
50AQI
18th July 2025
23AQI
23AQI
19th July 2025
28AQI
28AQI
20th July 2025
30AQI
30AQI
21st July 2025
35AQI
35AQI
22nd July 2025
19AQI
19AQI
23rd July 2025
20AQI
20AQI
24th July 2025
30AQI
30AQI
25th July 2025
38AQI
38AQI
26th July 2025
61AQI
61AQI
27th July 2025
63AQI
63AQI
28th July 2025
55AQI
55AQI
29th July 2025
53AQI
53AQI
30th July 2025
59AQI
59AQI
31st July 2025
62AQI
62AQI
1st August 2025
28AQI
28AQI
2nd August 2025
37AQI
37AQI
3rd August 2025
83AQI
83AQI
19AQI
18AQI
18AQI
37AQI
40AQI
49AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202529AQI
5
30
31
23
7
23
8
2
1
114
16
Highest AQI recorded in
August49AQI
Lowest AQI recorded in
April18AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
29AQILeast Polluted Year Recorded
2025(Avg.)
29AQIFrelighsburg Site B's annual 2025 AQI (29) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
