Chatham, Ontario, 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
Chatham, Ontario, Canada
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
1st Aug 2025
83AQILowest AQI recorded on
14th Aug 2023
17AQISame Day Analysis (1st August ):
On this day, AQI across the 5 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: 1st Aug - 2nd Aug 2025
Chatham, Ontario, Canada
AQI
Day
Night
.
6 AM1st Aug 2025
9 PM
5 AM2nd Aug 2025
Day time
Avg. Highest Time
7AM1st Aug
90AQI
Avg. Lowest Time
8PM1st Aug
48AQI
Night time
Avg. Highest Time
9PM1st Aug
70AQI
Avg. Lowest Time
2AM2nd Aug
31AQI
In the last 24 hours,
Chatham's AQI reached its highest point of 90 at 7 AM during the Day, while the lowest point, 31, was recorded at 2 AM during the Night between 1st Aug and 2nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Chatham, Ontario, Canada
JulAug
03rd - 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 - 31st31st - 01st01st - 02nd02nd
Day
Night
3rd Jul 2025436 AMAQI
3rd Jul 2025487 AMAQI
3rd Jul 2025478 AMAQI
3rd Jul 2025499 AMAQI
3rd Jul 20255210 AMAQI
3rd Jul 20255411 AMAQI
3rd Jul 20255612 PMAQI
3rd Jul 2025541 PMAQI
3rd Jul 2025552 PMAQI
3rd Jul 2025563 PMAQI
3rd Jul 2025564 PMAQI
3rd Jul 2025535 PMAQI
3rd Jul 2025526 PMAQI
3rd Jul 2025527 PMAQI
3rd Jul 2025538 PMAQI
3rd Jul 2025539 PMAQI
3rd Jul 20255210 PMAQI
3rd Jul 20255211 PMAQI
4th Jul 20255012 AMAQI
4th Jul 2025531 AMAQI
4th Jul 2025472 AMAQI
4th Jul 2025473 AMAQI
4th Jul 2025444 AMAQI
4th Jul 2025445 AMAQI
24°C18/29°C
4th Jul 2025466 AMAQI
4th Jul 2025457 AMAQI
4th Jul 2025458 AMAQI
4th Jul 2025479 AMAQI
4th Jul 20255010 AMAQI
4th Jul 20254711 AMAQI
4th Jul 20254612 PMAQI
4th Jul 2025481 PMAQI
4th Jul 2025512 PMAQI
4th Jul 2025513 PMAQI
4th Jul 2025524 PMAQI
4th Jul 2025505 PMAQI
4th Jul 2025506 PMAQI
4th Jul 2025507 PMAQI
4th Jul 2025508 PMAQI
4th Jul 2025529 PMAQI
4th Jul 20255010 PMAQI
4th Jul 20255011 PMAQI
5th Jul 20255212 AMAQI
5th Jul 2025571 AMAQI
5th Jul 2025612 AMAQI
5th Jul 2025523 AMAQI
5th Jul 2025524 AMAQI
5th Jul 2025505 AMAQI
22°C14/31°C
5th Jul 2025506 AMAQI
5th Jul 2025527 AMAQI
5th Jul 2025558 AMAQI
5th Jul 2025549 AMAQI
5th Jul 20255410 AMAQI
5th Jul 20255311 AMAQI
5th Jul 20255212 PMAQI
5th Jul 2025521 PMAQI
5th Jul 2025522 PMAQI
5th Jul 2025533 PMAQI
5th Jul 2025544 PMAQI
5th Jul 2025555 PMAQI
5th Jul 2025556 PMAQI
5th Jul 2025557 PMAQI
5th Jul 2025558 PMAQI
5th Jul 2025549 PMAQI
5th Jul 20255510 PMAQI
5th Jul 20255411 PMAQI
6th Jul 20255512 AMAQI
6th Jul 2025531 AMAQI
6th Jul 2025492 AMAQI
6th Jul 2025493 AMAQI
6th Jul 2025494 AMAQI
6th Jul 2025515 AMAQI
26°C19/34°C
6th Jul 2025506 AMAQI
6th Jul 2025507 AMAQI
6th Jul 2025518 AMAQI
6th Jul 2025529 AMAQI
6th Jul 20255110 AMAQI
6th Jul 20255111 AMAQI
6th Jul 20255212 PMAQI
6th Jul 2025521 PMAQI
6th Jul 2025522 PMAQI
6th Jul 2025523 PMAQI
6th Jul 2025534 PMAQI
6th Jul 2025525 PMAQI
6th Jul 2025526 PMAQI
6th Jul 2025537 PMAQI
6th Jul 2025538 PMAQI
6th Jul 2025539 PMAQI
6th Jul 20255210 PMAQI
6th Jul 20255211 PMAQI
7th Jul 20255212 AMAQI
7th Jul 2025491 AMAQI
7th Jul 2025372 AMAQI
7th Jul 2025403 AMAQI
7th Jul 2025384 AMAQI
7th Jul 2025385 AMAQI
28°C23/34°C
7th Jul 2025376 AMAQI
7th Jul 2025347 AMAQI
7th Jul 2025358 AMAQI
7th Jul 2025399 AMAQI
7th Jul 20253910 AMAQI
7th Jul 20254711 AMAQI
7th Jul 20253612 PMAQI
7th Jul 2025271 PMAQI
7th Jul 2025252 PMAQI
7th Jul 2025263 PMAQI
7th Jul 2025294 PMAQI
7th Jul 2025335 PMAQI
7th Jul 2025336 PMAQI
7th Jul 2025337 PMAQI
7th Jul 2025368 PMAQI
7th Jul 2025389 PMAQI
7th Jul 20253810 PMAQI
7th Jul 20253711 PMAQI
8th Jul 20253712 AMAQI
8th Jul 2025371 AMAQI
8th Jul 2025372 AMAQI
8th Jul 2025343 AMAQI
8th Jul 2025374 AMAQI
8th Jul 2025425 AMAQI
21°C17/24°C
8th Jul 2025406 AMAQI
8th Jul 2025497 AMAQI
8th Jul 2025548 AMAQI
8th Jul 2025549 AMAQI
8th Jul 20255710 AMAQI
8th Jul 20255511 AMAQI
8th Jul 20255312 PMAQI
8th Jul 2025561 PMAQI
8th Jul 2025562 PMAQI
8th Jul 2025563 PMAQI
8th Jul 2025574 PMAQI
8th Jul 2025565 PMAQI
8th Jul 2025556 PMAQI
8th Jul 2025557 PMAQI
8th Jul 2025528 PMAQI
8th Jul 2025519 PMAQI
8th Jul 20255210 PMAQI
8th Jul 20255311 PMAQI
9th Jul 20255312 AMAQI
9th Jul 2025551 AMAQI
9th Jul 2025552 AMAQI
9th Jul 2025593 AMAQI
9th Jul 2025574 AMAQI
9th Jul 2025585 AMAQI
21°C12/28°C
9th Jul 2025586 AMAQI
9th Jul 2025567 AMAQI
9th Jul 2025598 AMAQI
9th Jul 2025589 AMAQI
9th Jul 20255810 AMAQI
9th Jul 20255511 AMAQI
9th Jul 20255512 PMAQI
9th Jul 2025541 PMAQI
9th Jul 2025532 PMAQI
9th Jul 2025523 PMAQI
9th Jul 2025534 PMAQI
9th Jul 2025565 PMAQI
9th Jul 2025556 PMAQI
9th Jul 2025557 PMAQI
9th Jul 2025568 PMAQI
9th Jul 2025549 PMAQI
9th Jul 20255410 PMAQI
9th Jul 20255311 PMAQI
10th Jul 20255412 AMAQI
10th Jul 2025541 AMAQI
10th Jul 2025462 AMAQI
10th Jul 2025493 AMAQI
10th Jul 2025484 AMAQI
10th Jul 2025515 AMAQI
23°C19/28°C
10th Jul 2025536 AMAQI
10th Jul 2025547 AMAQI
10th Jul 2025528 AMAQI
10th Jul 2025539 AMAQI
10th Jul 20255010 AMAQI
10th Jul 20254811 AMAQI
10th Jul 20254812 PMAQI
10th Jul 2025501 PMAQI
10th Jul 2025502 PMAQI
10th Jul 2025503 PMAQI
10th Jul 2025504 PMAQI
10th Jul 2025515 PMAQI
10th Jul 2025516 PMAQI
10th Jul 2025517 PMAQI
10th Jul 2025518 PMAQI
10th Jul 2025519 PMAQI
10th Jul 20255010 PMAQI
10th Jul 20254911 PMAQI
11th Jul 20255112 AMAQI
11th Jul 2025501 AMAQI
11th Jul 2025422 AMAQI
11th Jul 2025463 AMAQI
11th Jul 2025474 AMAQI
11th Jul 2025435 AMAQI
23°C17/28°C
11th Jul 2025436 AMAQI
11th Jul 2025437 AMAQI
11th Jul 2025478 AMAQI
11th Jul 2025509 AMAQI
11th Jul 20255010 AMAQI
11th Jul 20255011 AMAQI
11th Jul 20254812 PMAQI
11th Jul 2025491 PMAQI
11th Jul 2025472 PMAQI
11th Jul 2025463 PMAQI
11th Jul 2025474 PMAQI
11th Jul 2025475 PMAQI
11th Jul 2025476 PMAQI
11th Jul 2025467 PMAQI
11th Jul 2025468 PMAQI
11th Jul 2025469 PMAQI
11th Jul 20254610 PMAQI
11th Jul 20254211 PMAQI
12th Jul 20254412 AMAQI
12th Jul 2025421 AMAQI
12th Jul 2025322 AMAQI
12th Jul 2025303 AMAQI
12th Jul 2025294 AMAQI
12th Jul 2025315 AMAQI
22°C18/27°C
12th Jul 2025296 AMAQI
12th Jul 2025277 AMAQI
12th Jul 2025298 AMAQI
12th Jul 2025329 AMAQI
12th Jul 20253610 AMAQI
12th Jul 20253911 AMAQI
12th Jul 20253912 PMAQI
12th Jul 2025381 PMAQI
12th Jul 2025392 PMAQI
12th Jul 2025373 PMAQI
12th Jul 2025384 PMAQI
12th Jul 2025385 PMAQI
12th Jul 2025386 PMAQI
12th Jul 2025377 PMAQI
12th Jul 2025368 PMAQI
12th Jul 2025369 PMAQI
12th Jul 20253710 PMAQI
12th Jul 20253611 PMAQI
13th Jul 20253512 AMAQI
13th Jul 2025371 AMAQI
13th Jul 2025362 AMAQI
13th Jul 2025353 AMAQI
13th Jul 2025334 AMAQI
13th Jul 2025325 AMAQI
27°C21/34°C
13th Jul 2025316 AMAQI
13th Jul 2025307 AMAQI
13th Jul 2025288 AMAQI
13th Jul 2025319 AMAQI
13th Jul 20253010 AMAQI
13th Jul 20253211 AMAQI
13th Jul 20253112 PMAQI
13th Jul 2025341 PMAQI
13th Jul 2025362 PMAQI
13th Jul 2025353 PMAQI
13th Jul 2025364 PMAQI
13th Jul 2025355 PMAQI
13th Jul 2025356 PMAQI
13th Jul 2025347 PMAQI
13th Jul 2025358 PMAQI
13th Jul 2025349 PMAQI
13th Jul 20253610 PMAQI
13th Jul 20254111 PMAQI
14th Jul 20254612 AMAQI
14th Jul 2025461 AMAQI
14th Jul 2025582 AMAQI
14th Jul 2025643 AMAQI
14th Jul 2025574 AMAQI
14th Jul 2025595 AMAQI
26°C23/31°C
14th Jul 2025646 AMAQI
14th Jul 2025667 AMAQI
14th Jul 2025678 AMAQI
14th Jul 2025749 AMAQI
14th Jul 20257110 AMAQI
14th Jul 20257411 AMAQI
14th Jul 20257412 PMAQI
14th Jul 2025761 PMAQI
14th Jul 2025792 PMAQI
14th Jul 2025803 PMAQI
14th Jul 2025754 PMAQI
14th Jul 2025745 PMAQI
14th Jul 2025736 PMAQI
14th Jul 2025757 PMAQI
14th Jul 2025748 PMAQI
14th Jul 2025679 PMAQI
14th Jul 20256710 PMAQI
14th Jul 20256811 PMAQI
15th Jul 20256812 AMAQI
15th Jul 2025691 AMAQI
15th Jul 2025772 AMAQI
15th Jul 2025783 AMAQI
15th Jul 2025894 AMAQI
15th Jul 2025865 AMAQI
26°C19/31°C
15th Jul 2025896 AMAQI
15th Jul 2025887 AMAQI
15th Jul 2025888 AMAQI
15th Jul 2025919 AMAQI
15th Jul 20259110 AMAQI
15th Jul 20258611 AMAQI
15th Jul 20259112 PMAQI
15th Jul 2025961 PMAQI
15th Jul 2025962 PMAQI
15th Jul 2025943 PMAQI
15th Jul 2025934 PMAQI
15th Jul 2025945 PMAQI
15th Jul 2025926 PMAQI
15th Jul 2025937 PMAQI
15th Jul 2025968 PMAQI
15th Jul 2025919 PMAQI
15th Jul 20259010 PMAQI
15th Jul 20259011 PMAQI
16th Jul 20259212 AMAQI
16th Jul 2025941 AMAQI
16th Jul 2025972 AMAQI
16th Jul 2025943 AMAQI
16th Jul 2025914 AMAQI
16th Jul 2025885 AMAQI
25°C18/32°C
16th Jul 2025886 AMAQI
16th Jul 2025887 AMAQI
16th Jul 2025908 AMAQI
16th Jul 2025929 AMAQI
16th Jul 20258710 AMAQI
16th Jul 20258211 AMAQI
16th Jul 20257712 PMAQI
16th Jul 2025731 PMAQI
16th Jul 2025722 PMAQI
16th Jul 2025713 PMAQI
16th Jul 2025684 PMAQI
16th Jul 2025715 PMAQI
16th Jul 2025676 PMAQI
16th Jul 2025707 PMAQI
16th Jul 2025638 PMAQI
16th Jul 2025799 PMAQI
16th Jul 20257910 PMAQI
16th Jul 20256511 PMAQI
17th Jul 20256312 AMAQI
17th Jul 2025641 AMAQI
17th Jul 2025442 AMAQI
17th Jul 2025363 AMAQI
17th Jul 2025364 AMAQI
17th Jul 2025385 AMAQI
25°C20/29°C
17th Jul 2025366 AMAQI
17th Jul 2025397 AMAQI
17th Jul 2025368 AMAQI
17th Jul 2025349 AMAQI
17th Jul 20253410 AMAQI
17th Jul 20253411 AMAQI
17th Jul 20254212 PMAQI
17th Jul 2025511 PMAQI
17th Jul 2025442 PMAQI
17th Jul 2025333 PMAQI
17th Jul 2025344 PMAQI
17th Jul 2025345 PMAQI
17th Jul 2025346 PMAQI
17th Jul 2025347 PMAQI
17th Jul 2025348 PMAQI
17th Jul 2025349 PMAQI
17th Jul 20253310 PMAQI
17th Jul 20253411 PMAQI
18th Jul 20253312 AMAQI
18th Jul 2025331 AMAQI
18th Jul 2025302 AMAQI
18th Jul 2025313 AMAQI
18th Jul 2025284 AMAQI
18th Jul 2025295 AMAQI
23°C18/26°C
18th Jul 2025276 AMAQI
18th Jul 2025297 AMAQI
18th Jul 2025278 AMAQI
18th Jul 2025289 AMAQI
18th Jul 20252710 AMAQI
18th Jul 20252811 AMAQI
18th Jul 20252912 PMAQI
18th Jul 2025311 PMAQI
18th Jul 2025272 PMAQI
18th Jul 2025283 PMAQI
18th Jul 2025274 PMAQI
18th Jul 2025275 PMAQI
18th Jul 2025286 PMAQI
18th Jul 2025287 PMAQI
18th Jul 2025278 PMAQI
18th Jul 2025269 PMAQI
18th Jul 20252510 PMAQI
18th Jul 20252611 PMAQI
19th Jul 20252512 AMAQI
19th Jul 2025251 AMAQI
19th Jul 2025292 AMAQI
19th Jul 2025383 AMAQI
19th Jul 2025454 AMAQI
19th Jul 2025405 AMAQI
19°C10/27°C
19th Jul 2025346 AMAQI
19th Jul 2025307 AMAQI
19th Jul 2025328 AMAQI
19th Jul 2025319 AMAQI
19th Jul 20252910 AMAQI
19th Jul 20252811 AMAQI
19th Jul 20252612 PMAQI
19th Jul 2025241 PMAQI
19th Jul 2025242 PMAQI
19th Jul 2025263 PMAQI
19th Jul 2025264 PMAQI
19th Jul 2025305 PMAQI
19th Jul 2025296 PMAQI
19th Jul 2025297 PMAQI
19th Jul 2025298 PMAQI
19th Jul 2025309 PMAQI
19th Jul 20253010 PMAQI
19th Jul 20253011 PMAQI
20th Jul 20253012 AMAQI
20th Jul 2025301 AMAQI
20th Jul 2025232 AMAQI
20th Jul 2025323 AMAQI
20th Jul 2025224 AMAQI
20th Jul 2025345 AMAQI
21°C13/27°C
20th Jul 2025236 AMAQI
20th Jul 2025257 AMAQI
20th Jul 2025268 AMAQI
20th Jul 2025279 AMAQI
20th Jul 20252710 AMAQI
20th Jul 20252711 AMAQI
20th Jul 20252712 PMAQI
20th Jul 2025281 PMAQI
20th Jul 2025262 PMAQI
20th Jul 2025263 PMAQI
20th Jul 2025264 PMAQI
20th Jul 2025295 PMAQI
20th Jul 2025306 PMAQI
20th Jul 2025327 PMAQI
20th Jul 2025308 PMAQI
20th Jul 2025279 PMAQI
20th Jul 20252710 PMAQI
20th Jul 20253211 PMAQI
21st Jul 20253312 AMAQI
21st Jul 2025351 AMAQI
21st Jul 2025382 AMAQI
21st Jul 2025403 AMAQI
21st Jul 2025404 AMAQI
21st Jul 2025445 AMAQI
22°C16/25°C
21st Jul 2025446 AMAQI
21st Jul 2025477 AMAQI
21st Jul 2025508 AMAQI
21st Jul 2025519 AMAQI
21st Jul 20255310 AMAQI
21st Jul 20255311 AMAQI
21st Jul 20255612 PMAQI
21st Jul 2025561 PMAQI
21st Jul 2025522 PMAQI
21st Jul 2025483 PMAQI
21st Jul 2025484 PMAQI
21st Jul 2025485 PMAQI
21st Jul 2025456 PMAQI
21st Jul 2025417 PMAQI
21st Jul 2025398 PMAQI
21st Jul 2025429 PMAQI
21st Jul 20254310 PMAQI
21st Jul 20253611 PMAQI
22nd Jul 20253512 AMAQI
22nd Jul 2025361 AMAQI
22nd Jul 2025312 AMAQI
22nd Jul 2025203 AMAQI
22nd Jul 2025194 AMAQI
22nd Jul 2025185 AMAQI
19°C12/26°C
22nd Jul 2025186 AMAQI
22nd Jul 2025187 AMAQI
22nd Jul 2025198 AMAQI
22nd Jul 2025199 AMAQI
22nd Jul 20252010 AMAQI
22nd Jul 20252211 AMAQI
22nd Jul 20252312 PMAQI
22nd Jul 2025241 PMAQI
22nd Jul 2025222 PMAQI
22nd Jul 2025213 PMAQI
22nd Jul 2025234 PMAQI
22nd Jul 2025235 PMAQI
22nd Jul 2025246 PMAQI
22nd Jul 2025227 PMAQI
22nd Jul 2025238 PMAQI
22nd Jul 2025229 PMAQI
22nd Jul 20252210 PMAQI
22nd Jul 20252311 PMAQI
23rd Jul 20252212 AMAQI
23rd Jul 2025231 AMAQI
23rd Jul 2025222 AMAQI
23rd Jul 2025213 AMAQI
23rd Jul 2025234 AMAQI
23rd Jul 2025225 AMAQI
19°C10/28°C
23rd Jul 2025226 AMAQI
23rd Jul 2025237 AMAQI
23rd Jul 2025238 AMAQI
23rd Jul 2025229 AMAQI
23rd Jul 20252310 AMAQI
23rd Jul 20252111 AMAQI
23rd Jul 20252212 PMAQI
23rd Jul 2025221 PMAQI
23rd Jul 2025222 PMAQI
23rd Jul 2025223 PMAQI
23rd Jul 2025244 PMAQI
23rd Jul 2025275 PMAQI
23rd Jul 2025276 PMAQI
23rd Jul 2025267 PMAQI
23rd Jul 2025288 PMAQI
23rd Jul 2025249 PMAQI
23rd Jul 20252510 PMAQI
23rd Jul 20253011 PMAQI
24th Jul 20252912 AMAQI
24th Jul 2025291 AMAQI
24th Jul 2025292 AMAQI
24th Jul 2025283 AMAQI
24th Jul 2025284 AMAQI
24th Jul 2025295 AMAQI
22°C14/30°C
24th Jul 2025336 AMAQI
24th Jul 2025457 AMAQI
24th Jul 2025528 AMAQI
24th Jul 2025529 AMAQI
24th Jul 20255410 AMAQI
24th Jul 20255411 AMAQI
24th Jul 20255412 PMAQI
24th Jul 2025521 PMAQI
24th Jul 2025532 PMAQI
24th Jul 2025473 PMAQI
24th Jul 2025444 PMAQI
24th Jul 2025485 PMAQI
24th Jul 2025536 PMAQI
24th Jul 2025507 PMAQI
24th Jul 2025518 PMAQI
24th Jul 2025509 PMAQI
24th Jul 20255010 PMAQI
24th Jul 20254911 PMAQI
25th Jul 20254612 AMAQI
25th Jul 2025401 AMAQI
25th Jul 2025332 AMAQI
25th Jul 2025303 AMAQI
25th Jul 2025304 AMAQI
25th Jul 2025295 AMAQI
27°C20/35°C
25th Jul 2025306 AMAQI
25th Jul 2025277 AMAQI
25th Jul 2025268 AMAQI
25th Jul 2025269 AMAQI
25th Jul 20252710 AMAQI
25th Jul 20252611 AMAQI
25th Jul 20252612 PMAQI
25th Jul 2025251 PMAQI
25th Jul 2025272 PMAQI
25th Jul 2025303 PMAQI
25th Jul 2025294 PMAQI
25th Jul 2025305 PMAQI
25th Jul 2025306 PMAQI
25th Jul 2025317 PMAQI
25th Jul 2025308 PMAQI
25th Jul 2025309 PMAQI
25th Jul 20253210 PMAQI
25th Jul 20253811 PMAQI
26th Jul 20254212 AMAQI
26th Jul 2025481 AMAQI
26th Jul 2025592 AMAQI
26th Jul 2025593 AMAQI
26th Jul 2025584 AMAQI
26th Jul 2025565 AMAQI
24°C19/28°C
26th Jul 2025536 AMAQI
26th Jul 2025547 AMAQI
26th Jul 2025538 AMAQI
26th Jul 2025559 AMAQI
26th Jul 20255610 AMAQI
26th Jul 20255411 AMAQI
26th Jul 20254812 PMAQI
26th Jul 2025441 PMAQI
26th Jul 2025422 PMAQI
26th Jul 2025423 PMAQI
26th Jul 2025464 PMAQI
26th Jul 2025505 PMAQI
26th Jul 2025506 PMAQI
26th Jul 2025517 PMAQI
26th Jul 2025498 PMAQI
26th Jul 2025529 PMAQI
26th Jul 20255210 PMAQI
26th Jul 20254711 PMAQI
27th Jul 20254712 AMAQI
27th Jul 2025461 AMAQI
27th Jul 2025252 AMAQI
27th Jul 2025243 AMAQI
27th Jul 2025234 AMAQI
27th Jul 2025245 AMAQI
23°C19/28°C
27th Jul 2025246 AMAQI
27th Jul 2025247 AMAQI
27th Jul 2025258 AMAQI
27th Jul 2025259 AMAQI
27th Jul 20252510 AMAQI
27th Jul 20252711 AMAQI
27th Jul 20253012 PMAQI
27th Jul 2025291 PMAQI
27th Jul 2025302 PMAQI
27th Jul 2025313 PMAQI
27th Jul 2025314 PMAQI
27th Jul 2025335 PMAQI
27th Jul 2025326 PMAQI
27th Jul 2025327 PMAQI
27th Jul 2025338 PMAQI
27th Jul 2025309 PMAQI
27th Jul 20253010 PMAQI
27th Jul 20253511 PMAQI
28th Jul 20253712 AMAQI
28th Jul 2025371 AMAQI
28th Jul 2025402 AMAQI
28th Jul 2025363 AMAQI
28th Jul 2025374 AMAQI
28th Jul 2025365 AMAQI
26°C23/33°C
28th Jul 2025356 AMAQI
28th Jul 2025367 AMAQI
28th Jul 2025438 AMAQI
28th Jul 2025409 AMAQI
28th Jul 20253810 AMAQI
28th Jul 20253611 AMAQI
28th Jul 20253612 PMAQI
28th Jul 2025371 PMAQI
28th Jul 2025392 PMAQI
28th Jul 2025393 PMAQI
28th Jul 2025404 PMAQI
28th Jul 2025415 PMAQI
28th Jul 2025406 PMAQI
28th Jul 2025387 PMAQI
28th Jul 2025368 PMAQI
28th Jul 2025389 PMAQI
28th Jul 20253610 PMAQI
28th Jul 20253611 PMAQI
29th Jul 20253212 AMAQI
29th Jul 2025341 AMAQI
29th Jul 2025272 AMAQI
29th Jul 2025253 AMAQI
29th Jul 2025244 AMAQI
29th Jul 2025245 AMAQI
25°C20/31°C
29th Jul 2025216 AMAQI
29th Jul 2025237 AMAQI
29th Jul 2025268 AMAQI
29th Jul 2025289 AMAQI
29th Jul 20253110 AMAQI
29th Jul 20253311 AMAQI
29th Jul 20253412 PMAQI
29th Jul 2025341 PMAQI
29th Jul 2025352 PMAQI
29th Jul 2025373 PMAQI
29th Jul 2025364 PMAQI
29th Jul 2025355 PMAQI
29th Jul 2025346 PMAQI
29th Jul 2025347 PMAQI
29th Jul 2025328 PMAQI
29th Jul 2025309 PMAQI
29th Jul 20252910 PMAQI
29th Jul 20253211 PMAQI
30th Jul 20253312 AMAQI
30th Jul 2025351 AMAQI
30th Jul 2025402 AMAQI
30th Jul 2025443 AMAQI
30th Jul 2025424 AMAQI
30th Jul 2025415 AMAQI
25°C20/32°C
30th Jul 2025426 AMAQI
30th Jul 2025427 AMAQI
30th Jul 2025458 AMAQI
30th Jul 2025479 AMAQI
30th Jul 20254610 AMAQI
30th Jul 20254511 AMAQI
30th Jul 20254312 PMAQI
30th Jul 2025441 PMAQI
30th Jul 2025442 PMAQI
30th Jul 2025443 PMAQI
30th Jul 2025434 PMAQI
30th Jul 2025445 PMAQI
30th Jul 2025446 PMAQI
30th Jul 2025447 PMAQI
30th Jul 2025448 PMAQI
30th Jul 2025449 PMAQI
30th Jul 20254410 PMAQI
30th Jul 20255111 PMAQI
31st Jul 20255012 AMAQI
31st Jul 2025501 AMAQI
31st Jul 2025692 AMAQI
31st Jul 2025963 AMAQI
31st Jul 20251034 AMAQI
31st Jul 2025905 AMAQI
23°C20/28°C
31st Jul 20251086 AMAQI
31st Jul 2025957 AMAQI
31st Jul 20251048 AMAQI
31st Jul 20251099 AMAQI
31st Jul 20259410 AMAQI
31st Jul 20256711 AMAQI
31st Jul 20259012 PMAQI
31st Jul 20251131 PMAQI
31st Jul 20251082 PMAQI
31st Jul 20251143 PMAQI
31st Jul 20251234 PMAQI
31st Jul 20251355 PMAQI
31st Jul 20251366 PMAQI
31st Jul 20251357 PMAQI
31st Jul 20251398 PMAQI
31st Jul 20251209 PMAQI
31st Jul 202511810 PMAQI
31st Jul 202511411 PMAQI
1st Aug 202512012 AMAQI
1st Aug 20251181 AMAQI
1st Aug 20251022 AMAQI
1st Aug 2025903 AMAQI
1st Aug 2025934 AMAQI
1st Aug 2025895 AMAQI
20°C16/26°C
1st Aug 2025866 AMAQI
1st Aug 2025907 AMAQI
1st Aug 2025878 AMAQI
1st Aug 2025829 AMAQI
1st Aug 20257310 AMAQI
1st Aug 20257311 AMAQI
1st Aug 20256612 PMAQI
1st Aug 2025651 PMAQI
1st Aug 2025612 PMAQI
1st Aug 2025643 PMAQI
1st Aug 2025624 PMAQI
1st Aug 2025605 PMAQI
1st Aug 2025576 PMAQI
1st Aug 2025547 PMAQI
1st Aug 2025488 PMAQI
1st Aug 2025709 PMAQI
1st Aug 20255010 PMAQI
1st Aug 20253411 PMAQI
2nd Aug 20253212 AMAQI
2nd Aug 2025331 AMAQI
2nd Aug 2025312 AMAQI
2nd Aug 2025323 AMAQI
2nd Aug 2025364 AMAQI
2nd Aug 2025355 AMAQI
19°C11/26°C
2nd Aug 2025336 AMAQI
6 AM2nd Aug 2025347 AMAQI
2nd Aug 2025328 AMAQI
2nd Aug 2025339 AMAQI
2nd Aug 20253210 AMAQI
2nd Aug 20253011 AMAQI
2nd Aug 20253112 PMAQI
1 PM
9 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 9 PM
47AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
6 AM - 9 PM
47AQI
16 hours / Day
480 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 9 PM (Avg. 47), while the lowest AQI was between 6 AM to 9 PM (Avg. 47).
Night time
Avg. Highest Time
12 AM - 11 PM
46AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
46AQI
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. 46), while the lowest AQI was between 12 AM to 11 PM (Avg. 46).
2025 Days Vs Air Quality
Chatham, Ontario, Canada
2025
87%
186
13%
27
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Good
186 DaysModerate
27 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2025, 87% of 214 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
Chatham, Ontario, 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
20AQI
20AQI
2nd January 2025
24AQI
24AQI
3rd January 2025
23AQI
23AQI
4th January 2025
26AQI
26AQI
5th January 2025
25AQI
25AQI
6th January 2025
22AQI
22AQI
7th January 2025
23AQI
23AQI
8th January 2025
25AQI
25AQI
9th January 2025
24AQI
24AQI
10th January 2025
57AQI
57AQI
11th January 2025
59AQI
59AQI
12th January 2025
49AQI
49AQI
13th January 2025
32AQI
32AQI
14th January 2025
26AQI
26AQI
15th January 2025
27AQI
27AQI
16th January 2025
51AQI
51AQI
17th January 2025
42AQI
42AQI
18th January 2025
28AQI
28AQI
19th January 2025
26AQI
26AQI
20th January 2025
25AQI
25AQI
21st January 2025
25AQI
25AQI
22nd January 2025
29AQI
29AQI
23rd January 2025
38AQI
38AQI
24th January 2025
32AQI
32AQI
25th January 2025
48AQI
48AQI
26th January 2025
31AQI
31AQI
27th January 2025
30AQI
30AQI
28th January 2025
27AQI
27AQI
29th January 2025
25AQI
25AQI
30th January 2025
29AQI
29AQI
31st January 2025
40AQI
40AQI
1st February 2025
26AQI
26AQI
2nd February 2025
33AQI
33AQI
3rd February 2025
57AQI
57AQI
4th February 2025
25AQI
25AQI
5th February 2025
23AQI
23AQI
6th February 2025
30AQI
30AQI
7th February 2025
27AQI
27AQI
8th February 2025
39AQI
39AQI
9th February 2025
36AQI
36AQI
10th February 2025
33AQI
33AQI
11th February 2025
43AQI
43AQI
12th February 2025
35AQI
35AQI
13th February 2025
31AQI
31AQI
14th February 2025
40AQI
40AQI
15th February 2025
43AQI
43AQI
16th February 2025
36AQI
36AQI
17th February 2025
27AQI
27AQI
18th February 2025
26AQI
26AQI
19th February 2025
26AQI
26AQI
20th February 2025
24AQI
24AQI
21st February 2025
29AQI
29AQI
22nd February 2025
54AQI
54AQI
23rd February 2025
55AQI
55AQI
24th February 2025
50AQI
50AQI
25th February 2025
44AQI
44AQI
26th February 2025
41AQI
41AQI
27th February 2025
48AQI
48AQI
28th February 2025
25AQI
25AQI
1st March 2025
29AQI
29AQI
2nd March 2025
28AQI
28AQI
3rd March 2025
40AQI
40AQI
4th March 2025
35AQI
35AQI
5th March 2025
31AQI
31AQI
6th March 2025
28AQI
28AQI
7th March 2025
28AQI
28AQI
8th March 2025
31AQI
31AQI
9th March 2025
28AQI
28AQI
10th March 2025
30AQI
30AQI
11th March 2025
30AQI
30AQI
12th March 2025
28AQI
28AQI
13th March 2025
26AQI
26AQI
14th March 2025
44AQI
44AQI
15th March 2025
43AQI
43AQI
16th March 2025
22AQI
22AQI
17th March 2025
16AQI
16AQI
18th March 2025
23AQI
23AQI
19th March 2025
32AQI
32AQI
20th March 2025
23AQI
23AQI
21st March 2025
18AQI
18AQI
22nd March 2025
17AQI
17AQI
23rd March 2025
17AQI
17AQI
24th March 2025
21AQI
21AQI
25th March 2025
18AQI
18AQI
26th March 2025
19AQI
19AQI
27th March 2025
31AQI
31AQI
28th March 2025
39AQI
39AQI
29th March 2025
50AQI
50AQI
30th March 2025
36AQI
36AQI
31st March 2025
20AQI
20AQI
1st April 2025
17AQI
17AQI
2nd April 2025
19AQI
19AQI
3rd April 2025
21AQI
21AQI
4th April 2025
17AQI
17AQI
5th April 2025
19AQI
19AQI
6th April 2025
17AQI
17AQI
7th April 2025
19AQI
19AQI
8th April 2025
16AQI
16AQI
9th April 2025
22AQI
22AQI
10th April 2025
25AQI
25AQI
11th April 2025
29AQI
29AQI
12th April 2025
20AQI
20AQI
13th April 2025
28AQI
28AQI
14th April 2025
26AQI
26AQI
15th April 2025
17AQI
17AQI
16th April 2025
14AQI
14AQI
17th April 2025
24AQI
24AQI
18th April 2025
37AQI
37AQI
19th April 2025
47AQI
47AQI
20th April 2025
18AQI
18AQI
21st April 2025
24AQI
24AQI
22nd April 2025
15AQI
15AQI
23rd April 2025
33AQI
33AQI
24th April 2025
47AQI
47AQI
25th April 2025
40AQI
40AQI
26th April 2025
25AQI
25AQI
27th April 2025
20AQI
20AQI
28th April 2025
25AQI
25AQI
29th April 2025
35AQI
35AQI
30th April 2025
17AQI
17AQI
1st May 2025
25AQI
25AQI
2nd May 2025
30AQI
30AQI
3rd May 2025
17AQI
17AQI
4th May 2025
17AQI
17AQI
5th May 2025
19AQI
19AQI
6th May 2025
25AQI
25AQI
7th May 2025
28AQI
28AQI
8th May 2025
18AQI
18AQI
9th May 2025
18AQI
18AQI
10th May 2025
27AQI
27AQI
11th May 2025
22AQI
22AQI
12th May 2025
29AQI
29AQI
13th May 2025
23AQI
23AQI
14th May 2025
17AQI
17AQI
15th May 2025
24AQI
24AQI
16th May 2025
30AQI
30AQI
17th May 2025
23AQI
23AQI
18th May 2025
18AQI
18AQI
19th May 2025
14AQI
14AQI
20th May 2025
15AQI
15AQI
21st May 2025
16AQI
16AQI
22nd May 2025
14AQI
14AQI
23rd May 2025
11AQI
11AQI
24th May 2025
11AQI
11AQI
25th May 2025
27AQI
27AQI
26th May 2025
20AQI
20AQI
27th May 2025
23AQI
23AQI
28th May 2025
16AQI
16AQI
29th May 2025
30AQI
30AQI
30th May 2025
33AQI
33AQI
31st May 2025
24AQI
24AQI
1st June 2025
20AQI
20AQI
2nd June 2025
25AQI
25AQI
3rd June 2025
42AQI
42AQI
4th June 2025
68AQI
68AQI
5th June 2025
74AQI
74AQI
6th June 2025
99AQI
99AQI
7th June 2025
69AQI
69AQI
8th June 2025
99AQI
99AQI
9th June 2025
75AQI
75AQI
10th June 2025
54AQI
54AQI
11th June 2025
68AQI
68AQI
12th June 2025
74AQI
74AQI
13th June 2025
51AQI
51AQI
14th June 2025
40AQI
40AQI
15th June 2025
43AQI
43AQI
16th June 2025
36AQI
36AQI
17th June 2025
33AQI
33AQI
18th June 2025
27AQI
27AQI
19th June 2025
21AQI
21AQI
20th June 2025
31AQI
31AQI
21st June 2025
37AQI
37AQI
22nd June 2025
41AQI
41AQI
23rd June 2025
51AQI
51AQI
24th June 2025
53AQI
53AQI
25th June 2025
40AQI
40AQI
26th June 2025
42AQI
42AQI
27th June 2025
39AQI
39AQI
28th June 2025
28AQI
28AQI
29th June 2025
32AQI
32AQI
30th June 2025
29AQI
29AQI
1st July 2025
26AQI
26AQI
2nd July 2025
36AQI
36AQI
3rd July 2025
49AQI
49AQI
4th July 2025
49AQI
49AQI
5th July 2025
54AQI
54AQI
6th July 2025
52AQI
52AQI
7th July 2025
38AQI
38AQI
8th July 2025
48AQI
48AQI
9th July 2025
55AQI
55AQI
10th July 2025
51AQI
51AQI
11th July 2025
47AQI
47AQI
12th July 2025
36AQI
36AQI
13th July 2025
34AQI
34AQI
14th July 2025
66AQI
66AQI
15th July 2025
86AQI
86AQI
16th July 2025
81AQI
81AQI
17th July 2025
41AQI
41AQI
18th July 2025
28AQI
28AQI
19th July 2025
30AQI
30AQI
20th July 2025
28AQI
28AQI
21st July 2025
43AQI
43AQI
22nd July 2025
24AQI
24AQI
23rd July 2025
24AQI
24AQI
24th July 2025
43AQI
43AQI
25th July 2025
32AQI
32AQI
26th July 2025
50AQI
50AQI
27th July 2025
31AQI
31AQI
28th July 2025
38AQI
38AQI
29th July 2025
30AQI
30AQI
30th July 2025
42AQI
42AQI
31st July 2025
100AQI
100AQI
1st August 2025
83AQI
83AQI
32AQI
36AQI
28AQI
24AQI
21AQI
48AQI
45AQI
83AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202534AQI
28
3
25
3
31
30
31
18
12
23
8
1
186
27
Highest AQI recorded in
August83AQI
Lowest AQI recorded in
May21AQI
202433AQI
26
5
24
5
31
30
31
29
31
29
2
30
29
2
28
2
30
1
348
17
Highest AQI recorded in
February37AQI
Lowest AQI recorded in
November28AQI
202340AQI
27
4
25
3
27
4
26
4
28
3
8
16
4
1
1
24
7
19
12
29
1
31
26
3
24
7
294
64
4
1
1
Highest AQI recorded in
June75AQI
Lowest AQI recorded in
October30AQI
202234AQI
29
2
21
30
1
29
1
29
2
20
10
21
3
1
24
5
30
1
27
3
29
2
290
30
Highest AQI recorded in
June47AQI
Lowest AQI recorded in
August28AQI
202135AQI
27
3
25
3
29
2
27
3
29
2
27
3
25
6
23
8
27
3
29
2
30
31
329
35
Highest AQI recorded in
August43AQI
Lowest AQI recorded in
November27AQI
202034AQI
15
18
23
7
27
4
27
4
25
5
29
2
25
5
25
6
214
33
Highest AQI recorded in
June39AQI
Lowest AQI recorded in
October28AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
40AQILeast Polluted Year Recorded
2024(Avg.)
33AQIChatham's annual 2025 AQI (34) shows an average percentage change of -3.8% (improved AQI) compared to previous years: 2020 (34), 2021 (35), 2022 (34), 2023 (40), 2024 (33).
