London Ontario, 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, London, Ontario, Canada
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2025
130AQILowest AQI recorded on
30th Aug 2023
19AQISame Day Analysis (6th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 99 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 6th Aug - 7th Aug 2025
London Ontario, London, Ontario, Canada
AQI
Day
Night
.
6 AM6th Aug 2025
8 PM
5 AM7th Aug 2025
Day time
Avg. Highest Time
10AM6th Aug
123AQI
Avg. Lowest Time
7PM6th Aug
82AQI
Night time
Avg. Highest Time
3AM7th Aug
100AQI
Avg. Lowest Time
11PM6th Aug
77AQI
In the last 24 hours,
London Ontario's AQI reached its highest point of 123 at 10 AM during the Day, while the lowest point, 77, was recorded at 11 PM during the Night between 6th Aug and 7th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
London Ontario, London, Ontario, Canada
JulAug
08th - 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 - 05th05th - 06th06th - 07th07th
Day
Night
8th Jul 2025346 AMAQI
8th Jul 2025357 AMAQI
8th Jul 2025348 AMAQI
8th Jul 2025389 AMAQI
8th Jul 20253810 AMAQI
8th Jul 20253711 AMAQI
8th Jul 20253712 PMAQI
8th Jul 2025381 PMAQI
8th Jul 2025362 PMAQI
8th Jul 2025383 PMAQI
8th Jul 2025384 PMAQI
8th Jul 2025405 PMAQI
8th Jul 2025406 PMAQI
8th Jul 2025407 PMAQI
8th Jul 2025388 PMAQI
8th Jul 2025369 PMAQI
8th Jul 20253810 PMAQI
8th Jul 20254111 PMAQI
9th Jul 20254312 AMAQI
9th Jul 2025441 AMAQI
9th Jul 2025462 AMAQI
9th Jul 2025473 AMAQI
9th Jul 2025484 AMAQI
9th Jul 2025515 AMAQI
20°C14/25°C
9th Jul 2025536 AMAQI
9th Jul 2025537 AMAQI
9th Jul 2025528 AMAQI
9th Jul 2025529 AMAQI
9th Jul 20255410 AMAQI
9th Jul 20255311 AMAQI
9th Jul 20255212 PMAQI
9th Jul 2025511 PMAQI
9th Jul 2025512 PMAQI
9th Jul 2025483 PMAQI
9th Jul 2025494 PMAQI
9th Jul 2025525 PMAQI
9th Jul 2025526 PMAQI
9th Jul 2025517 PMAQI
9th Jul 2025508 PMAQI
9th Jul 2025509 PMAQI
9th Jul 20254910 PMAQI
9th Jul 20254611 PMAQI
10th Jul 20254912 AMAQI
10th Jul 2025501 AMAQI
10th Jul 2025442 AMAQI
10th Jul 2025463 AMAQI
10th Jul 2025464 AMAQI
10th Jul 2025465 AMAQI
21°C16/27°C
10th Jul 2025476 AMAQI
10th Jul 2025477 AMAQI
10th Jul 2025478 AMAQI
10th Jul 2025509 AMAQI
10th Jul 20254910 AMAQI
10th Jul 20254811 AMAQI
10th Jul 20255112 PMAQI
10th Jul 2025521 PMAQI
10th Jul 2025522 PMAQI
10th Jul 2025523 PMAQI
10th Jul 2025514 PMAQI
10th Jul 2025515 PMAQI
10th Jul 2025506 PMAQI
10th Jul 2025507 PMAQI
10th Jul 2025518 PMAQI
10th Jul 2025489 PMAQI
10th Jul 20254810 PMAQI
10th Jul 20255011 PMAQI
11th Jul 20254812 AMAQI
11th Jul 2025501 AMAQI
11th Jul 2025522 AMAQI
11th Jul 2025513 AMAQI
11th Jul 2025524 AMAQI
11th Jul 2025525 AMAQI
23°C18/28°C
11th Jul 2025536 AMAQI
11th Jul 2025527 AMAQI
11th Jul 2025538 AMAQI
11th Jul 2025529 AMAQI
11th Jul 20255010 AMAQI
11th Jul 20255011 AMAQI
11th Jul 20255012 PMAQI
11th Jul 2025501 PMAQI
11th Jul 2025492 PMAQI
11th Jul 2025493 PMAQI
11th Jul 2025484 PMAQI
11th Jul 2025505 PMAQI
11th Jul 2025506 PMAQI
11th Jul 2025497 PMAQI
11th Jul 2025498 PMAQI
11th Jul 2025509 PMAQI
11th Jul 20254910 PMAQI
11th Jul 20254811 PMAQI
12th Jul 20254912 AMAQI
12th Jul 2025481 AMAQI
12th Jul 2025442 AMAQI
12th Jul 2025433 AMAQI
12th Jul 2025414 AMAQI
12th Jul 2025405 AMAQI
22°C16/30°C
12th Jul 2025386 AMAQI
12th Jul 2025397 AMAQI
12th Jul 2025408 AMAQI
12th Jul 2025419 AMAQI
12th Jul 20254210 AMAQI
12th Jul 20254211 AMAQI
12th Jul 20254212 PMAQI
12th Jul 2025431 PMAQI
12th Jul 2025452 PMAQI
12th Jul 2025463 PMAQI
12th Jul 2025444 PMAQI
12th Jul 2025455 PMAQI
12th Jul 2025476 PMAQI
12th Jul 2025457 PMAQI
12th Jul 2025438 PMAQI
12th Jul 2025439 PMAQI
12th Jul 20254210 PMAQI
12th Jul 20254211 PMAQI
13th Jul 20254312 AMAQI
13th Jul 2025421 AMAQI
13th Jul 2025372 AMAQI
13th Jul 2025383 AMAQI
13th Jul 2025374 AMAQI
13th Jul 2025385 AMAQI
27°C20/34°C
13th Jul 2025376 AMAQI
13th Jul 2025377 AMAQI
13th Jul 2025378 AMAQI
13th Jul 2025409 AMAQI
13th Jul 20253910 AMAQI
13th Jul 20254011 AMAQI
13th Jul 20254012 PMAQI
13th Jul 2025401 PMAQI
13th Jul 2025392 PMAQI
13th Jul 2025393 PMAQI
13th Jul 2025394 PMAQI
13th Jul 2025405 PMAQI
13th Jul 2025416 PMAQI
13th Jul 2025437 PMAQI
13th Jul 2025448 PMAQI
13th Jul 2025409 PMAQI
13th Jul 20254310 PMAQI
13th Jul 20254411 PMAQI
14th Jul 20254412 AMAQI
14th Jul 2025431 AMAQI
14th Jul 2025522 AMAQI
14th Jul 2025533 AMAQI
14th Jul 2025564 AMAQI
14th Jul 2025545 AMAQI
25°C21/30°C
14th Jul 2025506 AMAQI
14th Jul 2025527 AMAQI
14th Jul 2025548 AMAQI
14th Jul 2025539 AMAQI
14th Jul 20255410 AMAQI
14th Jul 20255211 AMAQI
14th Jul 20255212 PMAQI
14th Jul 2025541 PMAQI
14th Jul 2025562 PMAQI
14th Jul 2025563 PMAQI
14th Jul 2025564 PMAQI
14th Jul 2025565 PMAQI
14th Jul 2025546 PMAQI
14th Jul 2025547 PMAQI
14th Jul 2025538 PMAQI
14th Jul 2025529 PMAQI
14th Jul 20255410 PMAQI
14th Jul 20255411 PMAQI
15th Jul 20255512 AMAQI
15th Jul 2025551 AMAQI
15th Jul 2025712 AMAQI
15th Jul 2025703 AMAQI
15th Jul 2025724 AMAQI
15th Jul 2025715 AMAQI
25°C19/32°C
15th Jul 2025726 AMAQI
15th Jul 2025747 AMAQI
15th Jul 2025728 AMAQI
15th Jul 2025759 AMAQI
15th Jul 20257610 AMAQI
15th Jul 20257511 AMAQI
15th Jul 20257212 PMAQI
15th Jul 2025741 PMAQI
15th Jul 2025732 PMAQI
15th Jul 2025733 PMAQI
15th Jul 2025744 PMAQI
15th Jul 2025705 PMAQI
15th Jul 2025706 PMAQI
15th Jul 2025717 PMAQI
15th Jul 2025728 PMAQI
15th Jul 2025689 PMAQI
15th Jul 20256810 PMAQI
15th Jul 20256711 PMAQI
16th Jul 20256812 AMAQI
16th Jul 2025721 AMAQI
16th Jul 2025822 AMAQI
16th Jul 2025823 AMAQI
16th Jul 2025814 AMAQI
16th Jul 2025835 AMAQI
24°C16/33°C
16th Jul 2025846 AMAQI
16th Jul 2025807 AMAQI
16th Jul 2025838 AMAQI
16th Jul 2025839 AMAQI
16th Jul 20258210 AMAQI
16th Jul 20258211 AMAQI
16th Jul 20258012 PMAQI
16th Jul 2025781 PMAQI
16th Jul 2025762 PMAQI
16th Jul 2025743 PMAQI
16th Jul 2025684 PMAQI
16th Jul 2025715 PMAQI
16th Jul 2025726 PMAQI
16th Jul 2025687 PMAQI
16th Jul 2025678 PMAQI
16th Jul 2025709 PMAQI
16th Jul 20257410 PMAQI
16th Jul 20256411 PMAQI
17th Jul 20256412 AMAQI
17th Jul 2025641 AMAQI
17th Jul 2025462 AMAQI
17th Jul 2025473 AMAQI
17th Jul 2025444 AMAQI
17th Jul 2025425 AMAQI
24°C17/32°C
17th Jul 2025436 AMAQI
17th Jul 2025437 AMAQI
17th Jul 2025468 AMAQI
17th Jul 2025459 AMAQI
17th Jul 20254310 AMAQI
17th Jul 20254411 AMAQI
17th Jul 20254712 PMAQI
17th Jul 2025511 PMAQI
17th Jul 2025512 PMAQI
17th Jul 2025433 PMAQI
17th Jul 2025424 PMAQI
17th Jul 2025395 PMAQI
17th Jul 2025406 PMAQI
17th Jul 2025427 PMAQI
17th Jul 2025418 PMAQI
17th Jul 2025419 PMAQI
17th Jul 20254210 PMAQI
17th Jul 20253811 PMAQI
18th Jul 20253912 AMAQI
18th Jul 2025361 AMAQI
18th Jul 2025242 AMAQI
18th Jul 2025233 AMAQI
18th Jul 2025224 AMAQI
18th Jul 2025235 AMAQI
21°C15/23°C
18th Jul 2025236 AMAQI
18th Jul 2025237 AMAQI
18th Jul 2025248 AMAQI
18th Jul 2025239 AMAQI
18th Jul 20252410 AMAQI
18th Jul 20252311 AMAQI
18th Jul 20252212 PMAQI
18th Jul 2025221 PMAQI
18th Jul 2025222 PMAQI
18th Jul 2025243 PMAQI
18th Jul 2025244 PMAQI
18th Jul 2025245 PMAQI
18th Jul 2025246 PMAQI
18th Jul 2025267 PMAQI
18th Jul 2025268 PMAQI
18th Jul 2025249 PMAQI
18th Jul 20252310 PMAQI
18th Jul 20252511 PMAQI
19th Jul 20252612 AMAQI
19th Jul 2025261 AMAQI
19th Jul 2025292 AMAQI
19th Jul 2025303 AMAQI
19th Jul 2025304 AMAQI
19th Jul 2025295 AMAQI
18°C10/25°C
19th Jul 2025296 AMAQI
19th Jul 2025307 AMAQI
19th Jul 2025318 AMAQI
19th Jul 2025319 AMAQI
19th Jul 20253210 AMAQI
19th Jul 20253011 AMAQI
19th Jul 20252912 PMAQI
19th Jul 2025271 PMAQI
19th Jul 2025262 PMAQI
19th Jul 2025273 PMAQI
19th Jul 2025274 PMAQI
19th Jul 2025265 PMAQI
19th Jul 2025276 PMAQI
19th Jul 2025277 PMAQI
19th Jul 2025278 PMAQI
19th Jul 2025289 PMAQI
19th Jul 20252910 PMAQI
19th Jul 20252811 PMAQI
20th Jul 20252812 AMAQI
20th Jul 2025281 AMAQI
20th Jul 2025252 AMAQI
20th Jul 2025223 AMAQI
20th Jul 2025224 AMAQI
20th Jul 2025225 AMAQI
20°C11/29°C
20th Jul 2025226 AMAQI
20th Jul 2025237 AMAQI
20th Jul 2025248 AMAQI
20th Jul 2025259 AMAQI
20th Jul 20252410 AMAQI
20th Jul 20252211 AMAQI
20th Jul 20252212 PMAQI
20th Jul 2025241 PMAQI
20th Jul 2025242 PMAQI
20th Jul 2025243 PMAQI
20th Jul 2025224 PMAQI
20th Jul 2025245 PMAQI
20th Jul 2025246 PMAQI
20th Jul 2025247 PMAQI
20th Jul 2025248 PMAQI
20th Jul 2025249 PMAQI
20th Jul 20252510 PMAQI
20th Jul 20252811 PMAQI
21st Jul 20253012 AMAQI
21st Jul 2025321 AMAQI
21st Jul 2025422 AMAQI
21st Jul 2025513 AMAQI
21st Jul 2025564 AMAQI
21st Jul 2025605 AMAQI
22°C14/27°C
21st Jul 2025626 AMAQI
21st Jul 2025627 AMAQI
21st Jul 2025628 AMAQI
21st Jul 2025619 AMAQI
21st Jul 20256110 AMAQI
21st Jul 20255511 AMAQI
21st Jul 20255212 PMAQI
21st Jul 2025511 PMAQI
21st Jul 2025462 PMAQI
21st Jul 2025413 PMAQI
21st Jul 2025434 PMAQI
21st Jul 2025515 PMAQI
21st Jul 2025496 PMAQI
21st Jul 2025477 PMAQI
21st Jul 2025468 PMAQI
21st Jul 2025509 PMAQI
21st Jul 20255010 PMAQI
21st Jul 20255011 PMAQI
22nd Jul 20255012 AMAQI
22nd Jul 2025441 AMAQI
22nd Jul 2025262 AMAQI
22nd Jul 2025223 AMAQI
22nd Jul 2025204 AMAQI
22nd Jul 2025195 AMAQI
17°C11/25°C
22nd Jul 2025206 AMAQI
22nd Jul 2025207 AMAQI
22nd Jul 2025218 AMAQI
22nd Jul 2025239 AMAQI
22nd Jul 20252310 AMAQI
22nd Jul 20252311 AMAQI
22nd Jul 20252212 PMAQI
22nd Jul 2025221 PMAQI
22nd Jul 2025222 PMAQI
22nd Jul 2025233 PMAQI
22nd Jul 2025264 PMAQI
22nd Jul 2025275 PMAQI
22nd Jul 2025276 PMAQI
22nd Jul 2025267 PMAQI
22nd Jul 2025268 PMAQI
22nd Jul 2025249 PMAQI
22nd Jul 20252410 PMAQI
22nd Jul 20252511 PMAQI
23rd Jul 20252512 AMAQI
23rd Jul 2025261 AMAQI
23rd Jul 2025262 AMAQI
23rd Jul 2025243 AMAQI
23rd Jul 2025284 AMAQI
23rd Jul 2025305 AMAQI
18°C9/25°C
23rd Jul 2025286 AMAQI
23rd Jul 2025287 AMAQI
23rd Jul 2025258 AMAQI
23rd Jul 2025259 AMAQI
23rd Jul 20252610 AMAQI
23rd Jul 20252611 AMAQI
23rd Jul 20252612 PMAQI
23rd Jul 2025261 PMAQI
23rd Jul 2025262 PMAQI
23rd Jul 2025243 PMAQI
23rd Jul 2025274 PMAQI
23rd Jul 2025295 PMAQI
23rd Jul 2025306 PMAQI
23rd Jul 2025287 PMAQI
23rd Jul 2025288 PMAQI
23rd Jul 2025269 PMAQI
23rd Jul 20252810 PMAQI
23rd Jul 20252811 PMAQI
24th Jul 20252812 AMAQI
24th Jul 2025321 AMAQI
24th Jul 2025412 AMAQI
24th Jul 2025343 AMAQI
24th Jul 2025334 AMAQI
24th Jul 2025315 AMAQI
21°C13/30°C
24th Jul 2025286 AMAQI
24th Jul 2025307 AMAQI
24th Jul 2025338 AMAQI
24th Jul 2025389 AMAQI
24th Jul 20254410 AMAQI
24th Jul 20255111 AMAQI
24th Jul 20255212 PMAQI
24th Jul 2025521 PMAQI
24th Jul 2025522 PMAQI
24th Jul 2025503 PMAQI
24th Jul 2025494 PMAQI
24th Jul 2025485 PMAQI
24th Jul 2025486 PMAQI
24th Jul 2025467 PMAQI
24th Jul 2025478 PMAQI
24th Jul 2025449 PMAQI
24th Jul 20254610 PMAQI
24th Jul 20254411 PMAQI
25th Jul 20253612 AMAQI
25th Jul 2025361 AMAQI
25th Jul 2025282 AMAQI
25th Jul 2025283 AMAQI
25th Jul 2025284 AMAQI
25th Jul 2025295 AMAQI
26°C16/35°C
25th Jul 2025326 AMAQI
25th Jul 2025307 AMAQI
25th Jul 2025308 AMAQI
25th Jul 2025329 AMAQI
25th Jul 20253210 AMAQI
25th Jul 20253211 AMAQI
25th Jul 20253012 PMAQI
25th Jul 2025271 PMAQI
25th Jul 2025262 PMAQI
25th Jul 2025273 PMAQI
25th Jul 2025284 PMAQI
25th Jul 2025295 PMAQI
25th Jul 2025306 PMAQI
25th Jul 2025297 PMAQI
25th Jul 2025328 PMAQI
25th Jul 2025339 PMAQI
25th Jul 20253510 PMAQI
25th Jul 20254211 PMAQI
26th Jul 20254412 AMAQI
26th Jul 2025431 AMAQI
26th Jul 2025572 AMAQI
26th Jul 2025573 AMAQI
26th Jul 2025564 AMAQI
26th Jul 2025585 AMAQI
24°C20/28°C
26th Jul 2025566 AMAQI
26th Jul 2025547 AMAQI
26th Jul 2025548 AMAQI
26th Jul 2025579 AMAQI
26th Jul 20256010 AMAQI
26th Jul 20256211 AMAQI
26th Jul 20256112 PMAQI
26th Jul 2025601 PMAQI
26th Jul 2025572 PMAQI
26th Jul 2025523 PMAQI
26th Jul 2025524 PMAQI
26th Jul 2025535 PMAQI
26th Jul 2025536 PMAQI
26th Jul 2025527 PMAQI
26th Jul 2025528 PMAQI
26th Jul 2025549 PMAQI
26th Jul 20255410 PMAQI
26th Jul 20255211 PMAQI
27th Jul 20255212 AMAQI
27th Jul 2025481 AMAQI
27th Jul 2025332 AMAQI
27th Jul 2025303 AMAQI
27th Jul 2025274 AMAQI
27th Jul 2025245 AMAQI
22°C18/28°C
27th Jul 2025236 AMAQI
27th Jul 2025237 AMAQI
27th Jul 2025268 AMAQI
27th Jul 2025289 AMAQI
27th Jul 20252910 AMAQI
27th Jul 20253011 AMAQI
27th Jul 20253112 PMAQI
27th Jul 2025321 PMAQI
27th Jul 2025312 PMAQI
27th Jul 2025313 PMAQI
27th Jul 2025324 PMAQI
27th Jul 2025345 PMAQI
27th Jul 2025346 PMAQI
27th Jul 2025347 PMAQI
27th Jul 2025348 PMAQI
27th Jul 2025329 PMAQI
27th Jul 20253210 PMAQI
27th Jul 20253211 PMAQI
28th Jul 20253312 AMAQI
28th Jul 2025341 AMAQI
28th Jul 2025332 AMAQI
28th Jul 2025403 AMAQI
28th Jul 2025434 AMAQI
28th Jul 2025405 AMAQI
25°C21/32°C
28th Jul 2025396 AMAQI
28th Jul 2025387 AMAQI
28th Jul 2025408 AMAQI
28th Jul 2025399 AMAQI
28th Jul 20254010 AMAQI
28th Jul 20254611 AMAQI
28th Jul 20255412 PMAQI
28th Jul 2025521 PMAQI
28th Jul 2025482 PMAQI
28th Jul 2025443 PMAQI
28th Jul 2025424 PMAQI
28th Jul 2025425 PMAQI
28th Jul 2025426 PMAQI
28th Jul 2025427 PMAQI
28th Jul 2025428 PMAQI
28th Jul 2025429 PMAQI
28th Jul 20254210 PMAQI
28th Jul 20254411 PMAQI
29th Jul 20254312 AMAQI
29th Jul 2025421 AMAQI
29th Jul 2025432 AMAQI
29th Jul 2025433 AMAQI
29th Jul 2025424 AMAQI
29th Jul 2025395 AMAQI
24°C16/33°C
29th Jul 2025376 AMAQI
29th Jul 2025387 AMAQI
29th Jul 2025388 AMAQI
29th Jul 2025429 AMAQI
29th Jul 20254110 AMAQI
29th Jul 20254311 AMAQI
29th Jul 20254312 PMAQI
29th Jul 2025431 PMAQI
29th Jul 2025412 PMAQI
29th Jul 2025443 PMAQI
29th Jul 2025424 PMAQI
29th Jul 2025425 PMAQI
29th Jul 2025416 PMAQI
29th Jul 2025427 PMAQI
29th Jul 2025438 PMAQI
29th Jul 2025439 PMAQI
29th Jul 20254210 PMAQI
29th Jul 20254211 PMAQI
30th Jul 20254212 AMAQI
30th Jul 2025411 AMAQI
30th Jul 2025382 AMAQI
30th Jul 2025393 AMAQI
30th Jul 2025434 AMAQI
30th Jul 2025425 AMAQI
25°C18/34°C
30th Jul 2025426 AMAQI
30th Jul 2025417 AMAQI
30th Jul 2025428 AMAQI
30th Jul 2025449 AMAQI
30th Jul 20254610 AMAQI
30th Jul 20254711 AMAQI
30th Jul 20254712 PMAQI
30th Jul 2025451 PMAQI
30th Jul 2025462 PMAQI
30th Jul 2025463 PMAQI
30th Jul 2025494 PMAQI
30th Jul 2025495 PMAQI
30th Jul 2025496 PMAQI
30th Jul 2025497 PMAQI
30th Jul 2025498 PMAQI
30th Jul 2025499 PMAQI
30th Jul 20254910 PMAQI
30th Jul 20255011 PMAQI
31st Jul 20255012 AMAQI
31st Jul 2025521 AMAQI
31st Jul 2025612 AMAQI
31st Jul 2025753 AMAQI
31st Jul 2025974 AMAQI
31st Jul 2025905 AMAQI
23°C18/29°C
31st Jul 20251066 AMAQI
31st Jul 20251127 AMAQI
31st Jul 20251268 AMAQI
31st Jul 20251489 AMAQI
31st Jul 202510410 AMAQI
31st Jul 20256811 AMAQI
31st Jul 202510612 PMAQI
31st Jul 20251381 PMAQI
31st Jul 20251502 PMAQI
31st Jul 20251483 PMAQI
31st Jul 20251484 PMAQI
31st Jul 20251495 PMAQI
31st Jul 20251456 PMAQI
31st Jul 20251407 PMAQI
31st Jul 20251388 PMAQI
31st Jul 20251519 PMAQI
31st Jul 202512010 PMAQI
31st Jul 20259111 PMAQI
1st Aug 20259012 AMAQI
1st Aug 2025961 AMAQI
1st Aug 2025892 AMAQI
1st Aug 2025783 AMAQI
1st Aug 2025804 AMAQI
1st Aug 2025825 AMAQI
20°C15/25°C
1st Aug 2025836 AMAQI
1st Aug 2025817 AMAQI
1st Aug 2025768 AMAQI
1st Aug 2025729 AMAQI
1st Aug 20257410 AMAQI
1st Aug 20257511 AMAQI
1st Aug 20256812 PMAQI
1st Aug 2025661 PMAQI
1st Aug 2025642 PMAQI
1st Aug 2025593 PMAQI
1st Aug 2025574 PMAQI
1st Aug 2025565 PMAQI
1st Aug 2025486 PMAQI
1st Aug 2025407 PMAQI
1st Aug 2025358 PMAQI
1st Aug 2025709 PMAQI
1st Aug 20255010 PMAQI
1st Aug 20253111 PMAQI
2nd Aug 20253812 AMAQI
2nd Aug 2025421 AMAQI
2nd Aug 2025422 AMAQI
2nd Aug 2025383 AMAQI
2nd Aug 2025344 AMAQI
2nd Aug 2025345 AMAQI
17°C9/23°C
2nd Aug 2025346 AMAQI
2nd Aug 2025357 AMAQI
2nd Aug 2025358 AMAQI
2nd Aug 2025359 AMAQI
2nd Aug 20253810 AMAQI
2nd Aug 20253911 AMAQI
2nd Aug 20254212 PMAQI
2nd Aug 2025301 PMAQI
2nd Aug 2025282 PMAQI
2nd Aug 2025303 PMAQI
2nd Aug 2025354 PMAQI
2nd Aug 2025445 PMAQI
2nd Aug 2025496 PMAQI
2nd Aug 2025577 PMAQI
2nd Aug 2025578 PMAQI
2nd Aug 2025419 PMAQI
2nd Aug 20255510 PMAQI
2nd Aug 20258111 PMAQI
3rd Aug 20258812 AMAQI
3rd Aug 2025901 AMAQI
3rd Aug 2025942 AMAQI
3rd Aug 20251103 AMAQI
3rd Aug 2025984 AMAQI
3rd Aug 20251045 AMAQI
19°C9/28°C
3rd Aug 20251046 AMAQI
3rd Aug 20251007 AMAQI
3rd Aug 20251128 AMAQI
3rd Aug 20251149 AMAQI
3rd Aug 202510210 AMAQI
3rd Aug 202510011 AMAQI
3rd Aug 202511112 PMAQI
3rd Aug 20251151 PMAQI
3rd Aug 20251242 PMAQI
3rd Aug 20251343 PMAQI
3rd Aug 20251414 PMAQI
3rd Aug 20251435 PMAQI
3rd Aug 20251426 PMAQI
3rd Aug 20251297 PMAQI
3rd Aug 20251268 PMAQI
3rd Aug 20251059 PMAQI
3rd Aug 202513010 PMAQI
3rd Aug 202513911 PMAQI
4th Aug 202513012 AMAQI
4th Aug 20251431 AMAQI
4th Aug 20251292 AMAQI
4th Aug 20251333 AMAQI
4th Aug 20251434 AMAQI
4th Aug 20251375 AMAQI
21°C12/29°C
4th Aug 20251416 AMAQI
4th Aug 20251497 AMAQI
4th Aug 20251448 AMAQI
4th Aug 20251529 AMAQI
4th Aug 202515310 AMAQI
4th Aug 202515211 AMAQI
4th Aug 202515212 PMAQI
4th Aug 20251421 PMAQI
4th Aug 20251272 PMAQI
4th Aug 20251283 PMAQI
4th Aug 20251194 PMAQI
4th Aug 20251115 PMAQI
4th Aug 20251066 PMAQI
4th Aug 20251047 PMAQI
4th Aug 20251018 PMAQI
4th Aug 20251489 PMAQI
4th Aug 202512010 PMAQI
4th Aug 20259911 PMAQI
5th Aug 202510012 AMAQI
5th Aug 20251151 AMAQI
5th Aug 20251222 AMAQI
5th Aug 20251203 AMAQI
5th Aug 20251194 AMAQI
5th Aug 20251165 AMAQI
22°C12/30°C
5th Aug 20251116 AMAQI
5th Aug 20251057 AMAQI
5th Aug 20251088 AMAQI
5th Aug 20251089 AMAQI
5th Aug 202511010 AMAQI
5th Aug 202510811 AMAQI
5th Aug 202510812 PMAQI
5th Aug 20251071 PMAQI
5th Aug 20251022 PMAQI
5th Aug 20251033 PMAQI
5th Aug 20251044 PMAQI
5th Aug 2025955 PMAQI
5th Aug 2025976 PMAQI
5th Aug 2025987 PMAQI
5th Aug 2025988 PMAQI
5th Aug 20251069 PMAQI
5th Aug 20259510 PMAQI
5th Aug 20258311 PMAQI
6th Aug 20258912 AMAQI
6th Aug 2025931 AMAQI
6th Aug 2025952 AMAQI
6th Aug 2025973 AMAQI
6th Aug 2025964 AMAQI
6th Aug 2025995 AMAQI
22°C14/30°C
6th Aug 20251046 AMAQI
6th Aug 20251047 AMAQI
6th Aug 20251138 AMAQI
6th Aug 20251129 AMAQI
6th Aug 202512310 AMAQI
6th Aug 202511311 AMAQI
6th Aug 202511012 PMAQI
6th Aug 2025961 PMAQI
6th Aug 2025902 PMAQI
6th Aug 2025873 PMAQI
6th Aug 2025874 PMAQI
6th Aug 2025855 PMAQI
6th Aug 2025886 PMAQI
6th Aug 2025827 PMAQI
6th Aug 2025848 PMAQI
6th Aug 2025979 PMAQI
6th Aug 20258610 PMAQI
6th Aug 20257711 PMAQI
7th Aug 20257812 AMAQI
7th Aug 2025781 AMAQI
7th Aug 2025882 AMAQI
7th Aug 20251003 AMAQI
7th Aug 2025964 AMAQI
7th Aug 2025945 AMAQI
23°C18/28°C
7th Aug 2025936 AMAQI
6 AM7th Aug 2025917 AMAQI
7th Aug 2025798 AMAQI
1 PM
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 8 PM
56AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
6 AM - 8 PM
56AQI
15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 PM (Avg. 56), while the lowest AQI was between 6 AM to 8 PM (Avg. 56).
Night time
Avg. Highest Time
12 AM - 11 PM
55AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
55AQI
9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 55), while the lowest AQI was between 12 AM to 11 PM (Avg. 55).
2025 Days Vs Air Quality
London Ontario, London, Ontario, Canada
2025
85%
186
13%
28
2%
4
Total number of days with different AQI categories in last 219 days in 2025 (146 days remaining)
Good
186 DaysModerate
28 DaysPoor
4 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2025, 85% of 219 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, 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
29AQI
29AQI
28th March 2025
35AQI
35AQI
29th March 2025
50AQI
50AQI
30th March 2025
39AQI
39AQI
31st March 2025
20AQI
20AQI
1st April 2025
17AQI
17AQI
2nd April 2025
18AQI
18AQI
3rd April 2025
23AQI
23AQI
4th April 2025
19AQI
19AQI
5th April 2025
21AQI
21AQI
6th April 2025
18AQI
18AQI
7th April 2025
19AQI
19AQI
8th April 2025
14AQI
14AQI
9th April 2025
22AQI
22AQI
10th April 2025
26AQI
26AQI
11th April 2025
35AQI
35AQI
12th April 2025
29AQI
29AQI
13th April 2025
37AQI
37AQI
14th April 2025
29AQI
29AQI
15th April 2025
17AQI
17AQI
16th April 2025
16AQI
16AQI
17th April 2025
23AQI
23AQI
18th April 2025
38AQI
38AQI
19th April 2025
43AQI
43AQI
20th April 2025
19AQI
19AQI
21st April 2025
23AQI
23AQI
22nd April 2025
15AQI
15AQI
23rd April 2025
31AQI
31AQI
24th April 2025
43AQI
43AQI
25th April 2025
41AQI
41AQI
26th April 2025
20AQI
20AQI
27th April 2025
17AQI
17AQI
28th April 2025
25AQI
25AQI
29th April 2025
33AQI
33AQI
30th April 2025
17AQI
17AQI
1st May 2025
30AQI
30AQI
2nd May 2025
30AQI
30AQI
3rd May 2025
18AQI
18AQI
4th May 2025
21AQI
21AQI
5th May 2025
21AQI
21AQI
6th May 2025
21AQI
21AQI
7th May 2025
29AQI
29AQI
8th May 2025
23AQI
23AQI
9th May 2025
26AQI
26AQI
10th May 2025
30AQI
30AQI
11th May 2025
24AQI
24AQI
12th May 2025
29AQI
29AQI
13th May 2025
29AQI
29AQI
14th May 2025
18AQI
18AQI
15th May 2025
26AQI
26AQI
16th May 2025
30AQI
30AQI
17th May 2025
24AQI
24AQI
18th May 2025
16AQI
16AQI
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
20AQI
20AQI
26th May 2025
24AQI
24AQI
27th May 2025
28AQI
28AQI
28th May 2025
20AQI
20AQI
29th May 2025
29AQI
29AQI
30th May 2025
33AQI
33AQI
31st May 2025
28AQI
28AQI
1st June 2025
18AQI
18AQI
2nd June 2025
29AQI
29AQI
3rd June 2025
35AQI
35AQI
4th June 2025
67AQI
67AQI
5th June 2025
57AQI
57AQI
6th June 2025
67AQI
67AQI
7th June 2025
68AQI
68AQI
8th June 2025
87AQI
87AQI
9th June 2025
67AQI
67AQI
10th June 2025
56AQI
56AQI
11th June 2025
62AQI
62AQI
12th June 2025
69AQI
69AQI
13th June 2025
53AQI
53AQI
14th June 2025
39AQI
39AQI
15th June 2025
39AQI
39AQI
16th June 2025
37AQI
37AQI
17th June 2025
38AQI
38AQI
18th June 2025
36AQI
36AQI
19th June 2025
27AQI
27AQI
20th June 2025
34AQI
34AQI
21st June 2025
41AQI
41AQI
22nd June 2025
45AQI
45AQI
23rd June 2025
52AQI
52AQI
24th June 2025
54AQI
54AQI
25th June 2025
46AQI
46AQI
26th June 2025
45AQI
45AQI
27th June 2025
41AQI
41AQI
28th June 2025
32AQI
32AQI
29th June 2025
35AQI
35AQI
30th June 2025
39AQI
39AQI
1st July 2025
33AQI
33AQI
2nd July 2025
41AQI
41AQI
3rd July 2025
48AQI
48AQI
4th July 2025
48AQI
48AQI
5th July 2025
53AQI
53AQI
6th July 2025
53AQI
53AQI
7th July 2025
48AQI
48AQI
8th July 2025
38AQI
38AQI
9th July 2025
48AQI
48AQI
10th July 2025
49AQI
49AQI
11th July 2025
50AQI
50AQI
12th July 2025
44AQI
44AQI
13th July 2025
41AQI
41AQI
14th July 2025
51AQI
51AQI
15th July 2025
68AQI
68AQI
16th July 2025
74AQI
74AQI
17th July 2025
48AQI
48AQI
18th July 2025
27AQI
27AQI
19th July 2025
28AQI
28AQI
20th July 2025
24AQI
24AQI
21st July 2025
50AQI
50AQI
22nd July 2025
25AQI
25AQI
23rd July 2025
27AQI
27AQI
24th July 2025
41AQI
41AQI
25th July 2025
31AQI
31AQI
26th July 2025
54AQI
54AQI
27th July 2025
32AQI
32AQI
28th July 2025
41AQI
41AQI
29th July 2025
42AQI
42AQI
30th July 2025
45AQI
45AQI
31st July 2025
112AQI
112AQI
1st August 2025
67AQI
67AQI
2nd August 2025
43AQI
43AQI
3rd August 2025
115AQI
115AQI
4th August 2025
130AQI
130AQI
5th August 2025
105AQI
105AQI
6th August 2025
99AQI
99AQI
32AQI
36AQI
29AQI
25AQI
23AQI
47AQI
46AQI
93AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202536AQI
29
2
24
4
29
2
30
31
18
12
24
6
1
1
2
3
186
28
4
Highest AQI recorded in
August93AQI
Lowest AQI recorded in
May23AQI
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 Ontario's annual 2025 AQI (36) shows an average percentage change of 1.08% (worsened AQI) compared to previous years: 2020 (32), 2021 (35), 2022 (34), 2023 (43), 2024 (33).
