London, 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
London, Ontario, Canada
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
16th Aug 2023
92AQILowest AQI recorded on
30th Aug 2023
19AQISame Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 73 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
London, Ontario, Canada
AQI
Day
Night
.
6 AM1st Aug 2025
9 PM
5 AM2nd Aug 2025
Day time
Avg. Highest Time
6AM1st Aug
58AQI
Avg. Lowest Time
8PM1st Aug
37AQI
Night time
Avg. Highest Time
9PM1st Aug
50AQI
Avg. Lowest Time
5AM2nd Aug
33AQI
In the last 24 hours,
London's AQI reached its highest point of 58 at 6 AM during the Day, while the lowest point, 33, was recorded at 5 AM during the Night between 1st Aug and 2nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
London, 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 2025396 AMAQI
3rd Jul 2025427 AMAQI
3rd Jul 2025428 AMAQI
3rd Jul 2025429 AMAQI
3rd Jul 20254510 AMAQI
3rd Jul 20254311 AMAQI
3rd Jul 20254412 PMAQI
3rd Jul 2025431 PMAQI
3rd Jul 2025432 PMAQI
3rd Jul 2025433 PMAQI
3rd Jul 2025434 PMAQI
3rd Jul 2025415 PMAQI
3rd Jul 2025426 PMAQI
3rd Jul 2025427 PMAQI
3rd Jul 2025438 PMAQI
3rd Jul 2025429 PMAQI
3rd Jul 20254210 PMAQI
3rd Jul 20254211 PMAQI
4th Jul 20254212 AMAQI
4th Jul 2025411 AMAQI
4th Jul 2025402 AMAQI
4th Jul 2025423 AMAQI
4th Jul 2025434 AMAQI
4th Jul 2025445 AMAQI
22°C15/29°C
4th Jul 2025446 AMAQI
4th Jul 2025427 AMAQI
4th Jul 2025418 AMAQI
4th Jul 2025449 AMAQI
4th Jul 20254310 AMAQI
4th Jul 20254311 AMAQI
4th Jul 20254212 PMAQI
4th Jul 2025411 PMAQI
4th Jul 2025412 PMAQI
4th Jul 2025413 PMAQI
4th Jul 2025424 PMAQI
4th Jul 2025425 PMAQI
4th Jul 2025426 PMAQI
4th Jul 2025447 PMAQI
4th Jul 2025438 PMAQI
4th Jul 2025429 PMAQI
4th Jul 20254210 PMAQI
4th Jul 20254611 PMAQI
5th Jul 20254712 AMAQI
5th Jul 2025471 AMAQI
5th Jul 2025492 AMAQI
5th Jul 2025483 AMAQI
5th Jul 2025464 AMAQI
5th Jul 2025445 AMAQI
20°C11/29°C
5th Jul 2025446 AMAQI
5th Jul 2025477 AMAQI
5th Jul 2025488 AMAQI
5th Jul 2025509 AMAQI
5th Jul 20255110 AMAQI
5th Jul 20254911 AMAQI
5th Jul 20254812 PMAQI
5th Jul 2025481 PMAQI
5th Jul 2025472 PMAQI
5th Jul 2025483 PMAQI
5th Jul 2025484 PMAQI
5th Jul 2025475 PMAQI
5th Jul 2025486 PMAQI
5th Jul 2025497 PMAQI
5th Jul 2025498 PMAQI
5th Jul 2025479 PMAQI
5th Jul 20254710 PMAQI
5th Jul 20254711 PMAQI
6th Jul 20254712 AMAQI
6th Jul 2025461 AMAQI
6th Jul 2025472 AMAQI
6th Jul 2025453 AMAQI
6th Jul 2025464 AMAQI
6th Jul 2025445 AMAQI
24°C16/32°C
6th Jul 2025456 AMAQI
6th Jul 2025457 AMAQI
6th Jul 2025478 AMAQI
6th Jul 2025469 AMAQI
6th Jul 20254510 AMAQI
6th Jul 20254511 AMAQI
6th Jul 20254612 PMAQI
6th Jul 2025441 PMAQI
6th Jul 2025442 PMAQI
6th Jul 2025463 PMAQI
6th Jul 2025444 PMAQI
6th Jul 2025445 PMAQI
6th Jul 2025446 PMAQI
6th Jul 2025447 PMAQI
6th Jul 2025458 PMAQI
6th Jul 2025459 PMAQI
6th Jul 20254510 PMAQI
6th Jul 20254511 PMAQI
7th Jul 20254512 AMAQI
7th Jul 2025441 AMAQI
7th Jul 2025412 AMAQI
7th Jul 2025403 AMAQI
7th Jul 2025404 AMAQI
7th Jul 2025385 AMAQI
27°C21/35°C
7th Jul 2025376 AMAQI
7th Jul 2025377 AMAQI
7th Jul 2025368 AMAQI
7th Jul 2025399 AMAQI
7th Jul 20253610 AMAQI
7th Jul 20253611 AMAQI
7th Jul 20253712 PMAQI
7th Jul 2025371 PMAQI
7th Jul 2025362 PMAQI
7th Jul 2025363 PMAQI
7th Jul 2025384 PMAQI
7th Jul 2025375 PMAQI
7th Jul 2025366 PMAQI
7th Jul 2025367 PMAQI
7th Jul 2025378 PMAQI
7th Jul 2025379 PMAQI
7th Jul 20253710 PMAQI
7th Jul 20253711 PMAQI
8th Jul 20253712 AMAQI
8th Jul 2025361 AMAQI
8th Jul 2025392 AMAQI
8th Jul 2025373 AMAQI
8th Jul 2025344 AMAQI
8th Jul 2025315 AMAQI
21°C17/24°C
8th Jul 2025326 AMAQI
8th Jul 2025307 AMAQI
8th Jul 2025308 AMAQI
8th Jul 2025339 AMAQI
8th Jul 20253410 AMAQI
8th Jul 20253511 AMAQI
8th Jul 20253612 PMAQI
8th Jul 2025361 PMAQI
8th Jul 2025362 PMAQI
8th Jul 2025383 PMAQI
8th Jul 2025374 PMAQI
8th Jul 2025385 PMAQI
8th Jul 2025386 PMAQI
8th Jul 2025377 PMAQI
8th Jul 2025378 PMAQI
8th Jul 2025379 PMAQI
8th Jul 20253710 PMAQI
8th Jul 20253911 PMAQI
9th Jul 20254012 AMAQI
9th Jul 2025401 AMAQI
9th Jul 2025422 AMAQI
9th Jul 2025443 AMAQI
9th Jul 2025444 AMAQI
9th Jul 2025455 AMAQI
20°C14/25°C
9th Jul 2025426 AMAQI
9th Jul 2025417 AMAQI
9th Jul 2025388 AMAQI
9th Jul 2025429 AMAQI
9th Jul 20254310 AMAQI
9th Jul 20254511 AMAQI
9th Jul 20254512 PMAQI
9th Jul 2025431 PMAQI
9th Jul 2025422 PMAQI
9th Jul 2025423 PMAQI
9th Jul 2025404 PMAQI
9th Jul 2025415 PMAQI
9th Jul 2025416 PMAQI
9th Jul 2025417 PMAQI
9th Jul 2025428 PMAQI
9th Jul 2025439 PMAQI
9th Jul 20254310 PMAQI
9th Jul 20254311 PMAQI
10th Jul 20254312 AMAQI
10th Jul 2025421 AMAQI
10th Jul 2025402 AMAQI
10th Jul 2025403 AMAQI
10th Jul 2025414 AMAQI
10th Jul 2025415 AMAQI
21°C16/27°C
10th Jul 2025416 AMAQI
10th Jul 2025407 AMAQI
10th Jul 2025408 AMAQI
10th Jul 2025419 AMAQI
10th Jul 20254210 AMAQI
10th Jul 20254211 AMAQI
10th Jul 20254312 PMAQI
10th Jul 2025431 PMAQI
10th Jul 2025422 PMAQI
10th Jul 2025423 PMAQI
10th Jul 2025424 PMAQI
10th Jul 2025415 PMAQI
10th Jul 2025406 PMAQI
10th Jul 2025427 PMAQI
10th Jul 2025428 PMAQI
10th Jul 2025419 PMAQI
10th Jul 20254210 PMAQI
10th Jul 20254411 PMAQI
11th Jul 20254312 AMAQI
11th Jul 2025421 AMAQI
11th Jul 2025452 AMAQI
11th Jul 2025423 AMAQI
11th Jul 2025414 AMAQI
11th Jul 2025425 AMAQI
23°C18/28°C
11th Jul 2025446 AMAQI
11th Jul 2025437 AMAQI
11th Jul 2025488 AMAQI
11th Jul 2025509 AMAQI
11th Jul 20255010 AMAQI
11th Jul 20254811 AMAQI
11th Jul 20254712 PMAQI
11th Jul 2025461 PMAQI
11th Jul 2025462 PMAQI
11th Jul 2025463 PMAQI
11th Jul 2025474 PMAQI
11th Jul 2025475 PMAQI
11th Jul 2025476 PMAQI
11th Jul 2025477 PMAQI
11th Jul 2025478 PMAQI
11th Jul 2025459 PMAQI
11th Jul 20254410 PMAQI
11th Jul 20254411 PMAQI
12th Jul 20254412 AMAQI
12th Jul 2025431 AMAQI
12th Jul 2025422 AMAQI
12th Jul 2025393 AMAQI
12th Jul 2025384 AMAQI
12th Jul 2025375 AMAQI
22°C16/30°C
12th Jul 2025376 AMAQI
12th Jul 2025387 AMAQI
12th Jul 2025428 AMAQI
12th Jul 2025459 AMAQI
12th Jul 20254510 AMAQI
12th Jul 20254111 AMAQI
12th Jul 20254112 PMAQI
12th Jul 2025441 PMAQI
12th Jul 2025452 PMAQI
12th Jul 2025463 PMAQI
12th Jul 2025454 PMAQI
12th Jul 2025455 PMAQI
12th Jul 2025466 PMAQI
12th Jul 2025447 PMAQI
12th Jul 2025428 PMAQI
12th Jul 2025419 PMAQI
12th Jul 20254110 PMAQI
12th Jul 20254111 PMAQI
13th Jul 20254112 AMAQI
13th Jul 2025411 AMAQI
13th Jul 2025372 AMAQI
13th Jul 2025363 AMAQI
13th Jul 2025354 AMAQI
13th Jul 2025365 AMAQI
27°C20/34°C
13th Jul 2025366 AMAQI
13th Jul 2025357 AMAQI
13th Jul 2025368 AMAQI
13th Jul 2025389 AMAQI
13th Jul 20253810 AMAQI
13th Jul 20253811 AMAQI
13th Jul 20254012 PMAQI
13th Jul 2025391 PMAQI
13th Jul 2025392 PMAQI
13th Jul 2025403 PMAQI
13th Jul 2025394 PMAQI
13th Jul 2025405 PMAQI
13th Jul 2025406 PMAQI
13th Jul 2025397 PMAQI
13th Jul 2025408 PMAQI
13th Jul 2025409 PMAQI
13th Jul 20254110 PMAQI
13th Jul 20254111 PMAQI
14th Jul 20254012 AMAQI
14th Jul 2025401 AMAQI
14th Jul 2025442 AMAQI
14th Jul 2025443 AMAQI
14th Jul 2025444 AMAQI
14th Jul 2025445 AMAQI
25°C21/30°C
14th Jul 2025446 AMAQI
14th Jul 2025467 AMAQI
14th Jul 2025498 AMAQI
14th Jul 2025499 AMAQI
14th Jul 20254910 AMAQI
14th Jul 20254711 AMAQI
14th Jul 20254512 PMAQI
14th Jul 2025451 PMAQI
14th Jul 2025472 PMAQI
14th Jul 2025483 PMAQI
14th Jul 2025484 PMAQI
14th Jul 2025485 PMAQI
14th Jul 2025476 PMAQI
14th Jul 2025477 PMAQI
14th Jul 2025478 PMAQI
14th Jul 2025479 PMAQI
14th Jul 20254610 PMAQI
14th Jul 20254711 PMAQI
15th Jul 20254712 AMAQI
15th Jul 2025461 AMAQI
15th Jul 2025512 AMAQI
15th Jul 2025493 AMAQI
15th Jul 2025504 AMAQI
15th Jul 2025515 AMAQI
25°C19/32°C
15th Jul 2025506 AMAQI
15th Jul 2025507 AMAQI
15th Jul 2025508 AMAQI
15th Jul 2025519 AMAQI
15th Jul 20255210 AMAQI
15th Jul 20255311 AMAQI
15th Jul 20255112 PMAQI
15th Jul 2025531 PMAQI
15th Jul 2025532 PMAQI
15th Jul 2025533 PMAQI
15th Jul 2025534 PMAQI
15th Jul 2025525 PMAQI
15th Jul 2025536 PMAQI
15th Jul 2025537 PMAQI
15th Jul 2025538 PMAQI
15th Jul 2025529 PMAQI
15th Jul 20255210 PMAQI
15th Jul 20255311 PMAQI
16th Jul 20255012 AMAQI
16th Jul 2025511 AMAQI
16th Jul 2025542 AMAQI
16th Jul 2025533 AMAQI
16th Jul 2025524 AMAQI
16th Jul 2025545 AMAQI
24°C16/33°C
16th Jul 2025556 AMAQI
16th Jul 2025527 AMAQI
16th Jul 2025538 AMAQI
16th Jul 2025529 AMAQI
16th Jul 20255310 AMAQI
16th Jul 20255311 AMAQI
16th Jul 20255212 PMAQI
16th Jul 2025501 PMAQI
16th Jul 2025492 PMAQI
16th Jul 2025493 PMAQI
16th Jul 2025484 PMAQI
16th Jul 2025495 PMAQI
16th Jul 2025486 PMAQI
16th Jul 2025477 PMAQI
16th Jul 2025478 PMAQI
16th Jul 2025509 PMAQI
16th Jul 20255110 PMAQI
16th Jul 20254611 PMAQI
17th Jul 20254512 AMAQI
17th Jul 2025441 AMAQI
17th Jul 2025382 AMAQI
17th Jul 2025373 AMAQI
17th Jul 2025354 AMAQI
17th Jul 2025345 AMAQI
24°C17/32°C
17th Jul 2025346 AMAQI
17th Jul 2025337 AMAQI
17th Jul 2025358 AMAQI
17th Jul 2025349 AMAQI
17th Jul 20253310 AMAQI
17th Jul 20253211 AMAQI
17th Jul 20253412 PMAQI
17th Jul 2025381 PMAQI
17th Jul 2025382 PMAQI
17th Jul 2025323 PMAQI
17th Jul 2025324 PMAQI
17th Jul 2025315 PMAQI
17th Jul 2025326 PMAQI
17th Jul 2025347 PMAQI
17th Jul 2025348 PMAQI
17th Jul 2025349 PMAQI
17th Jul 20253410 PMAQI
17th Jul 20253311 PMAQI
18th Jul 20253212 AMAQI
18th Jul 2025301 AMAQI
18th Jul 2025242 AMAQI
18th Jul 2025233 AMAQI
18th Jul 2025224 AMAQI
18th Jul 2025235 AMAQI
21°C15/23°C
18th Jul 2025246 AMAQI
18th Jul 2025257 AMAQI
18th Jul 2025308 AMAQI
18th Jul 2025309 AMAQI
18th Jul 20253010 AMAQI
18th Jul 20252911 AMAQI
18th Jul 20252912 PMAQI
18th Jul 2025311 PMAQI
18th Jul 2025312 PMAQI
18th Jul 2025303 PMAQI
18th Jul 2025294 PMAQI
18th Jul 2025295 PMAQI
18th Jul 2025296 PMAQI
18th Jul 2025317 PMAQI
18th Jul 2025298 PMAQI
18th Jul 2025279 PMAQI
18th Jul 20252810 PMAQI
18th Jul 20252811 PMAQI
19th Jul 20252912 AMAQI
19th Jul 2025271 AMAQI
19th Jul 2025292 AMAQI
19th Jul 2025303 AMAQI
19th Jul 2025294 AMAQI
19th Jul 2025295 AMAQI
18°C10/25°C
19th Jul 2025296 AMAQI
19th Jul 2025297 AMAQI
19th Jul 2025338 AMAQI
19th Jul 2025359 AMAQI
19th Jul 20253610 AMAQI
19th Jul 20252911 AMAQI
19th Jul 20252912 PMAQI
19th Jul 2025291 PMAQI
19th Jul 2025322 PMAQI
19th Jul 2025333 PMAQI
19th Jul 2025324 PMAQI
19th Jul 2025325 PMAQI
19th Jul 2025326 PMAQI
19th Jul 2025317 PMAQI
19th Jul 2025308 PMAQI
19th Jul 2025319 PMAQI
19th Jul 20253210 PMAQI
19th Jul 20253111 PMAQI
20th Jul 20253212 AMAQI
20th Jul 2025311 AMAQI
20th Jul 2025282 AMAQI
20th Jul 2025253 AMAQI
20th Jul 2025244 AMAQI
20th Jul 2025265 AMAQI
20°C11/29°C
20th Jul 2025266 AMAQI
20th Jul 2025257 AMAQI
20th Jul 2025268 AMAQI
20th Jul 2025279 AMAQI
20th Jul 20252710 AMAQI
20th Jul 20252511 AMAQI
20th Jul 20252712 PMAQI
20th Jul 2025281 PMAQI
20th Jul 2025282 PMAQI
20th Jul 2025283 PMAQI
20th Jul 2025284 PMAQI
20th Jul 2025295 PMAQI
20th Jul 2025306 PMAQI
20th Jul 2025317 PMAQI
20th Jul 2025288 PMAQI
20th Jul 2025279 PMAQI
20th Jul 20252710 PMAQI
20th Jul 20253011 PMAQI
21st Jul 20253012 AMAQI
21st Jul 2025311 AMAQI
21st Jul 2025322 AMAQI
21st Jul 2025363 AMAQI
21st Jul 2025374 AMAQI
21st Jul 2025395 AMAQI
22°C14/27°C
21st Jul 2025396 AMAQI
21st Jul 2025407 AMAQI
21st Jul 2025398 AMAQI
21st Jul 2025389 AMAQI
21st Jul 20253910 AMAQI
21st Jul 20253911 AMAQI
21st Jul 20253712 PMAQI
21st Jul 2025401 PMAQI
21st Jul 2025392 PMAQI
21st Jul 2025363 PMAQI
21st Jul 2025364 PMAQI
21st Jul 2025385 PMAQI
21st Jul 2025386 PMAQI
21st Jul 2025347 PMAQI
21st Jul 2025338 PMAQI
21st Jul 2025409 PMAQI
21st Jul 20254010 PMAQI
21st Jul 20254011 PMAQI
22nd Jul 20253912 AMAQI
22nd Jul 2025361 AMAQI
22nd Jul 2025282 AMAQI
22nd Jul 2025273 AMAQI
22nd Jul 2025254 AMAQI
22nd Jul 2025265 AMAQI
17°C11/25°C
22nd Jul 2025276 AMAQI
22nd Jul 2025287 AMAQI
22nd Jul 2025288 AMAQI
22nd Jul 2025299 AMAQI
22nd Jul 20252910 AMAQI
22nd Jul 20252811 AMAQI
22nd Jul 20252712 PMAQI
22nd Jul 2025281 PMAQI
22nd Jul 2025292 PMAQI
22nd Jul 2025293 PMAQI
22nd Jul 2025304 PMAQI
22nd Jul 2025315 PMAQI
22nd Jul 2025316 PMAQI
22nd Jul 2025307 PMAQI
22nd Jul 2025318 PMAQI
22nd Jul 2025309 PMAQI
22nd Jul 20253010 PMAQI
22nd Jul 20253011 PMAQI
23rd Jul 20252912 AMAQI
23rd Jul 2025281 AMAQI
23rd Jul 2025282 AMAQI
23rd Jul 2025273 AMAQI
23rd Jul 2025284 AMAQI
23rd Jul 2025295 AMAQI
18°C9/25°C
23rd Jul 2025296 AMAQI
23rd Jul 2025287 AMAQI
23rd Jul 2025278 AMAQI
23rd Jul 2025289 AMAQI
23rd Jul 20253010 AMAQI
23rd Jul 20253311 AMAQI
23rd Jul 20253412 PMAQI
23rd Jul 2025341 PMAQI
23rd Jul 2025352 PMAQI
23rd Jul 2025353 PMAQI
23rd Jul 2025384 PMAQI
23rd Jul 2025395 PMAQI
23rd Jul 2025446 PMAQI
23rd Jul 2025447 PMAQI
23rd Jul 2025398 PMAQI
23rd Jul 2025369 PMAQI
23rd Jul 20253710 PMAQI
23rd Jul 20253711 PMAQI
24th Jul 20253712 AMAQI
24th Jul 2025381 AMAQI
24th Jul 2025482 AMAQI
24th Jul 2025473 AMAQI
24th Jul 2025454 AMAQI
24th Jul 2025445 AMAQI
21°C13/30°C
24th Jul 2025426 AMAQI
24th Jul 2025367 AMAQI
24th Jul 2025418 AMAQI
24th Jul 2025459 AMAQI
24th Jul 20254510 AMAQI
24th Jul 20254711 AMAQI
24th Jul 20254912 PMAQI
24th Jul 2025501 PMAQI
24th Jul 2025502 PMAQI
24th Jul 2025473 PMAQI
24th Jul 2025454 PMAQI
24th Jul 2025465 PMAQI
24th Jul 2025476 PMAQI
24th Jul 2025487 PMAQI
24th Jul 2025488 PMAQI
24th Jul 2025489 PMAQI
24th Jul 20254810 PMAQI
24th Jul 20254711 PMAQI
25th Jul 20254412 AMAQI
25th Jul 2025411 AMAQI
25th Jul 2025362 AMAQI
25th Jul 2025343 AMAQI
25th Jul 2025334 AMAQI
25th Jul 2025355 AMAQI
26°C16/35°C
25th Jul 2025356 AMAQI
25th Jul 2025357 AMAQI
25th Jul 2025348 AMAQI
25th Jul 2025349 AMAQI
25th Jul 20253410 AMAQI
25th Jul 20253511 AMAQI
25th Jul 20253712 PMAQI
25th Jul 2025371 PMAQI
25th Jul 2025382 PMAQI
25th Jul 2025393 PMAQI
25th Jul 2025394 PMAQI
25th Jul 2025385 PMAQI
25th Jul 2025376 PMAQI
25th Jul 2025397 PMAQI
25th Jul 2025398 PMAQI
25th Jul 2025429 PMAQI
25th Jul 20254310 PMAQI
25th Jul 20254511 PMAQI
26th Jul 20254512 AMAQI
26th Jul 2025451 AMAQI
26th Jul 2025512 AMAQI
26th Jul 2025503 AMAQI
26th Jul 2025484 AMAQI
26th Jul 2025525 AMAQI
24°C20/28°C
26th Jul 2025526 AMAQI
26th Jul 2025507 AMAQI
26th Jul 2025518 AMAQI
26th Jul 2025529 AMAQI
26th Jul 20254910 AMAQI
26th Jul 20254811 AMAQI
26th Jul 20254712 PMAQI
26th Jul 2025461 PMAQI
26th Jul 2025452 PMAQI
26th Jul 2025453 PMAQI
26th Jul 2025444 PMAQI
26th Jul 2025455 PMAQI
26th Jul 2025456 PMAQI
26th Jul 2025467 PMAQI
26th Jul 2025458 PMAQI
26th Jul 2025479 PMAQI
26th Jul 20254710 PMAQI
26th Jul 20254611 PMAQI
27th Jul 20254612 AMAQI
27th Jul 2025431 AMAQI
27th Jul 2025332 AMAQI
27th Jul 2025363 AMAQI
27th Jul 2025314 AMAQI
27th Jul 2025255 AMAQI
22°C18/28°C
27th Jul 2025236 AMAQI
27th Jul 2025247 AMAQI
27th Jul 2025258 AMAQI
27th Jul 2025279 AMAQI
27th Jul 20252710 AMAQI
27th Jul 20252811 AMAQI
27th Jul 20252912 PMAQI
27th Jul 2025301 PMAQI
27th Jul 2025302 PMAQI
27th Jul 2025323 PMAQI
27th Jul 2025324 PMAQI
27th Jul 2025335 PMAQI
27th Jul 2025326 PMAQI
27th Jul 2025317 PMAQI
27th Jul 2025328 PMAQI
27th Jul 2025309 PMAQI
27th Jul 20253110 PMAQI
27th Jul 20253111 PMAQI
28th Jul 20253212 AMAQI
28th Jul 2025321 AMAQI
28th Jul 2025322 AMAQI
28th Jul 2025343 AMAQI
28th Jul 2025364 AMAQI
28th Jul 2025355 AMAQI
25°C21/32°C
28th Jul 2025336 AMAQI
28th Jul 2025347 AMAQI
28th Jul 2025368 AMAQI
28th Jul 2025349 AMAQI
28th Jul 20253410 AMAQI
28th Jul 20253611 AMAQI
28th Jul 20253812 PMAQI
28th Jul 2025381 PMAQI
28th Jul 2025362 PMAQI
28th Jul 2025353 PMAQI
28th Jul 2025344 PMAQI
28th Jul 2025345 PMAQI
28th Jul 2025346 PMAQI
28th Jul 2025347 PMAQI
28th Jul 2025348 PMAQI
28th Jul 2025359 PMAQI
28th Jul 20253610 PMAQI
28th Jul 20253611 PMAQI
29th Jul 20253812 AMAQI
29th Jul 2025371 AMAQI
29th Jul 2025372 AMAQI
29th Jul 2025373 AMAQI
29th Jul 2025344 AMAQI
29th Jul 2025335 AMAQI
24°C16/33°C
29th Jul 2025316 AMAQI
29th Jul 2025327 AMAQI
29th Jul 2025308 AMAQI
29th Jul 2025329 AMAQI
29th Jul 20253210 AMAQI
29th Jul 20253211 AMAQI
29th Jul 20253412 PMAQI
29th Jul 2025361 PMAQI
29th Jul 2025362 PMAQI
29th Jul 2025353 PMAQI
29th Jul 2025354 PMAQI
29th Jul 2025345 PMAQI
29th Jul 2025346 PMAQI
29th Jul 2025347 PMAQI
29th Jul 2025378 PMAQI
29th Jul 2025379 PMAQI
29th Jul 20253510 PMAQI
29th Jul 20253711 PMAQI
30th Jul 20253712 AMAQI
30th Jul 2025361 AMAQI
30th Jul 2025352 AMAQI
30th Jul 2025363 AMAQI
30th Jul 2025384 AMAQI
30th Jul 2025375 AMAQI
25°C18/34°C
30th Jul 2025366 AMAQI
30th Jul 2025367 AMAQI
30th Jul 2025368 AMAQI
30th Jul 2025379 AMAQI
30th Jul 20253910 AMAQI
30th Jul 20253811 AMAQI
30th Jul 20253812 PMAQI
30th Jul 2025391 PMAQI
30th Jul 2025392 PMAQI
30th Jul 2025383 PMAQI
30th Jul 2025404 PMAQI
30th Jul 2025415 PMAQI
30th Jul 2025426 PMAQI
30th Jul 2025467 PMAQI
30th Jul 2025408 PMAQI
30th Jul 2025419 PMAQI
30th Jul 20254210 PMAQI
30th Jul 20254111 PMAQI
31st Jul 20254112 AMAQI
31st Jul 2025411 AMAQI
31st Jul 2025442 AMAQI
31st Jul 2025493 AMAQI
31st Jul 2025564 AMAQI
31st Jul 2025545 AMAQI
23°C18/29°C
31st Jul 2025596 AMAQI
31st Jul 2025637 AMAQI
31st Jul 2025728 AMAQI
31st Jul 2025829 AMAQI
31st Jul 20256110 AMAQI
31st Jul 20254711 AMAQI
31st Jul 20256312 PMAQI
31st Jul 2025741 PMAQI
31st Jul 2025782 PMAQI
31st Jul 2025763 PMAQI
31st Jul 2025764 PMAQI
31st Jul 2025775 PMAQI
31st Jul 2025776 PMAQI
31st Jul 2025767 PMAQI
31st Jul 2025768 PMAQI
31st Jul 2025839 PMAQI
31st Jul 20257110 PMAQI
31st Jul 20256111 PMAQI
1st Aug 20256012 AMAQI
1st Aug 2025631 AMAQI
1st Aug 2025612 AMAQI
1st Aug 2025563 AMAQI
1st Aug 2025574 AMAQI
1st Aug 2025575 AMAQI
20°C15/25°C
1st Aug 2025586 AMAQI
1st Aug 2025577 AMAQI
1st Aug 2025558 AMAQI
1st Aug 2025539 AMAQI
1st Aug 20255510 AMAQI
1st Aug 20255511 AMAQI
1st Aug 20255212 PMAQI
1st Aug 2025521 PMAQI
1st Aug 2025512 PMAQI
1st Aug 2025473 PMAQI
1st Aug 2025454 PMAQI
1st Aug 2025425 PMAQI
1st Aug 2025406 PMAQI
1st Aug 2025417 PMAQI
1st Aug 2025378 PMAQI
1st Aug 2025509 PMAQI
1st Aug 20254210 PMAQI
1st Aug 20253511 PMAQI
2nd Aug 20253712 AMAQI
2nd Aug 2025381 AMAQI
2nd Aug 2025382 AMAQI
2nd Aug 2025363 AMAQI
2nd Aug 2025344 AMAQI
2nd Aug 2025335 AMAQI
17°C9/23°C
2nd Aug 2025326 AMAQI
6 AM2nd Aug 2025337 AMAQI
2nd Aug 2025368 AMAQI
2nd Aug 2025339 AMAQI
2nd Aug 20253210 AMAQI
2nd Aug 20253111 AMAQI
2nd Aug 20253212 PMAQI
2nd Aug 2025271 PMAQI
1 PM2nd Aug 2025252 PMAQI
2nd Aug 2025253 PMAQI
2nd Aug 2025234 PMAQI
2nd Aug 2025225 PMAQI
2nd Aug 2025216 PMAQI
2nd Aug 2025217 PMAQI
2nd Aug 2025228 PMAQI
9 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 9 PM
40AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
6 AM - 9 PM
40AQI
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. 40), while the lowest AQI was between 6 AM to 9 PM (Avg. 40).
Night time
Avg. Highest Time
12 AM - 11 PM
40AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 5 AM
40AQI
6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 40), while the lowest AQI was between 12 AM to 5 AM (Avg. 40).
2025 Days Vs Air Quality
London, Ontario, Canada
2025
86%
184
13%
28
0.4%
1
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Good
184 DaysModerate
28 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2025, 86% 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
London, 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
24AQI
24AQI
6th January 2025
22AQI
22AQI
7th January 2025
24AQI
24AQI
8th January 2025
26AQI
26AQI
9th January 2025
26AQI
26AQI
10th January 2025
49AQI
49AQI
11th January 2025
64AQI
64AQI
12th January 2025
49AQI
49AQI
13th January 2025
35AQI
35AQI
14th January 2025
27AQI
27AQI
15th January 2025
25AQI
25AQI
16th January 2025
50AQI
50AQI
17th January 2025
41AQI
41AQI
18th January 2025
28AQI
28AQI
19th January 2025
28AQI
28AQI
20th January 2025
28AQI
28AQI
21st January 2025
24AQI
24AQI
22nd January 2025
29AQI
29AQI
23rd January 2025
38AQI
38AQI
24th January 2025
27AQI
27AQI
25th January 2025
48AQI
48AQI
26th January 2025
30AQI
30AQI
27th January 2025
26AQI
26AQI
28th January 2025
29AQI
29AQI
29th January 2025
26AQI
26AQI
30th January 2025
27AQI
27AQI
31st January 2025
52AQI
52AQI
1st February 2025
26AQI
26AQI
2nd February 2025
28AQI
28AQI
3rd February 2025
54AQI
54AQI
4th February 2025
26AQI
26AQI
5th February 2025
24AQI
24AQI
6th February 2025
32AQI
32AQI
7th February 2025
29AQI
29AQI
8th February 2025
41AQI
41AQI
9th February 2025
36AQI
36AQI
10th February 2025
31AQI
31AQI
11th February 2025
48AQI
48AQI
12th February 2025
29AQI
29AQI
13th February 2025
29AQI
29AQI
14th February 2025
34AQI
34AQI
15th February 2025
42AQI
42AQI
16th February 2025
32AQI
32AQI
17th February 2025
27AQI
27AQI
18th February 2025
27AQI
27AQI
19th February 2025
25AQI
25AQI
20th February 2025
22AQI
22AQI
21st February 2025
27AQI
27AQI
22nd February 2025
53AQI
53AQI
23rd February 2025
56AQI
56AQI
24th February 2025
52AQI
52AQI
25th February 2025
44AQI
44AQI
26th February 2025
48AQI
48AQI
27th February 2025
49AQI
49AQI
28th February 2025
25AQI
25AQI
1st March 2025
29AQI
29AQI
2nd March 2025
28AQI
28AQI
3rd March 2025
30AQI
30AQI
4th March 2025
35AQI
35AQI
5th March 2025
35AQI
35AQI
6th March 2025
27AQI
27AQI
7th March 2025
30AQI
30AQI
8th March 2025
33AQI
33AQI
9th March 2025
28AQI
28AQI
10th March 2025
30AQI
30AQI
11th March 2025
30AQI
30AQI
12th March 2025
27AQI
27AQI
13th March 2025
28AQI
28AQI
14th March 2025
53AQI
53AQI
15th March 2025
54AQI
54AQI
16th March 2025
22AQI
22AQI
17th March 2025
16AQI
16AQI
18th March 2025
24AQI
24AQI
19th March 2025
33AQI
33AQI
20th March 2025
25AQI
25AQI
21st March 2025
17AQI
17AQI
22nd March 2025
16AQI
16AQI
23rd March 2025
18AQI
18AQI
24th March 2025
20AQI
20AQI
25th March 2025
18AQI
18AQI
26th March 2025
19AQI
19AQI
27th March 2025
30AQI
30AQI
28th March 2025
36AQI
36AQI
29th March 2025
51AQI
51AQI
30th March 2025
40AQI
40AQI
31st March 2025
21AQI
21AQI
1st April 2025
17AQI
17AQI
2nd April 2025
18AQI
18AQI
3rd April 2025
24AQI
24AQI
4th April 2025
20AQI
20AQI
5th April 2025
21AQI
21AQI
6th April 2025
19AQI
19AQI
7th April 2025
20AQI
20AQI
8th April 2025
14AQI
14AQI
9th April 2025
23AQI
23AQI
10th April 2025
27AQI
27AQI
11th April 2025
36AQI
36AQI
12th April 2025
30AQI
30AQI
13th April 2025
38AQI
38AQI
14th April 2025
29AQI
29AQI
15th April 2025
17AQI
17AQI
16th April 2025
16AQI
16AQI
17th April 2025
24AQI
24AQI
18th April 2025
38AQI
38AQI
19th April 2025
44AQI
44AQI
20th April 2025
19AQI
19AQI
21st April 2025
24AQI
24AQI
22nd April 2025
15AQI
15AQI
23rd April 2025
33AQI
33AQI
24th April 2025
45AQI
45AQI
25th April 2025
42AQI
42AQI
26th April 2025
21AQI
21AQI
27th April 2025
17AQI
17AQI
28th April 2025
26AQI
26AQI
29th April 2025
34AQI
34AQI
30th April 2025
17AQI
17AQI
1st May 2025
31AQI
31AQI
2nd May 2025
31AQI
31AQI
3rd May 2025
19AQI
19AQI
4th May 2025
21AQI
21AQI
5th May 2025
21AQI
21AQI
6th May 2025
22AQI
22AQI
7th May 2025
29AQI
29AQI
8th May 2025
24AQI
24AQI
9th May 2025
28AQI
28AQI
10th May 2025
31AQI
31AQI
11th May 2025
25AQI
25AQI
12th May 2025
30AQI
30AQI
13th May 2025
30AQI
30AQI
14th May 2025
18AQI
18AQI
15th May 2025
27AQI
27AQI
16th May 2025
31AQI
31AQI
17th May 2025
25AQI
25AQI
18th May 2025
17AQI
17AQI
19th May 2025
16AQI
16AQI
20th May 2025
17AQI
17AQI
21st May 2025
19AQI
19AQI
22nd May 2025
15AQI
15AQI
23rd May 2025
11AQI
11AQI
24th May 2025
11AQI
11AQI
25th May 2025
21AQI
21AQI
26th May 2025
25AQI
25AQI
27th May 2025
28AQI
28AQI
28th May 2025
21AQI
21AQI
29th May 2025
30AQI
30AQI
30th May 2025
35AQI
35AQI
31st May 2025
28AQI
28AQI
1st June 2025
18AQI
18AQI
2nd June 2025
29AQI
29AQI
3rd June 2025
36AQI
36AQI
4th June 2025
68AQI
68AQI
5th June 2025
59AQI
59AQI
6th June 2025
67AQI
67AQI
7th June 2025
68AQI
68AQI
8th June 2025
87AQI
87AQI
9th June 2025
68AQI
68AQI
10th June 2025
55AQI
55AQI
11th June 2025
63AQI
63AQI
12th June 2025
70AQI
70AQI
13th June 2025
52AQI
52AQI
14th June 2025
39AQI
39AQI
15th June 2025
40AQI
40AQI
16th June 2025
39AQI
39AQI
17th June 2025
38AQI
38AQI
18th June 2025
37AQI
37AQI
19th June 2025
27AQI
27AQI
20th June 2025
36AQI
36AQI
21st June 2025
43AQI
43AQI
22nd June 2025
46AQI
46AQI
23rd June 2025
53AQI
53AQI
24th June 2025
54AQI
54AQI
25th June 2025
44AQI
44AQI
26th June 2025
46AQI
46AQI
27th June 2025
41AQI
41AQI
28th June 2025
32AQI
32AQI
29th June 2025
36AQI
36AQI
30th June 2025
39AQI
39AQI
1st July 2025
32AQI
32AQI
2nd July 2025
43AQI
43AQI
3rd July 2025
49AQI
49AQI
4th July 2025
48AQI
48AQI
5th July 2025
54AQI
54AQI
6th July 2025
54AQI
54AQI
7th July 2025
46AQI
46AQI
8th July 2025
38AQI
38AQI
9th July 2025
49AQI
49AQI
10th July 2025
50AQI
50AQI
11th July 2025
50AQI
50AQI
12th July 2025
44AQI
44AQI
13th July 2025
40AQI
40AQI
14th July 2025
51AQI
51AQI
15th July 2025
68AQI
68AQI
16th July 2025
74AQI
74AQI
17th July 2025
45AQI
45AQI
18th July 2025
25AQI
25AQI
19th July 2025
28AQI
28AQI
20th July 2025
25AQI
25AQI
21st July 2025
48AQI
48AQI
22nd July 2025
26AQI
26AQI
23rd July 2025
27AQI
27AQI
24th July 2025
42AQI
42AQI
25th July 2025
33AQI
33AQI
26th July 2025
54AQI
54AQI
27th July 2025
34AQI
34AQI
28th July 2025
42AQI
42AQI
29th July 2025
43AQI
43AQI
30th July 2025
46AQI
46AQI
31st July 2025
107AQI
107AQI
1st August 2025
73AQI
73AQI
32AQI
36AQI
29AQI
26AQI
24AQI
48AQI
46AQI
73AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202534AQI
29
2
24
4
28
3
30
31
18
12
24
6
1
1
184
28
1
Highest AQI recorded in
August73AQI
Lowest AQI recorded in
May24AQI
202433AQI
27
4
25
4
30
1
29
1
28
3
27
1
31
26
5
28
2
28
3
29
1
30
1
338
26
Highest AQI recorded in
February39AQI
Lowest AQI recorded in
November26AQI
202343AQI
23
8
23
5
25
6
24
6
26
5
8
19
2
1
21
10
17
14
27
3
26
5
25
4
23
8
268
93
2
1
Highest AQI recorded in
June74AQI
Lowest AQI recorded in
October33AQI
202234AQI
26
5
20
1
26
5
17
31
27
3
23
1
27
1
28
3
25
5
27
4
278
27
Highest AQI recorded in
December38AQI
Lowest AQI recorded in
August20AQI
202135AQI
25
5
25
3
27
4
27
3
27
4
29
1
23
8
29
2
29
1
30
1
27
3
26
5
324
40
Highest AQI recorded in
February40AQI
Lowest AQI recorded in
September28AQI
202032AQI
12
1
21
18
27
3
29
2
30
1
29
1
31
26
4
26
5
249
17
Highest AQI recorded in
June37AQI
Lowest AQI recorded in
October24AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
43AQILeast Polluted Year Recorded
2020(Avg.)
32AQILondon's annual 2025 AQI (34) shows an average percentage change of -2.2% (improved AQI) compared to previous years: 2020 (32), 2021 (35), 2022 (34), 2023 (43), 2024 (33).
