Sarnia, 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
Sarnia, Ontario, Canada
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
1st Aug 2025
81AQILowest AQI recorded on
1st Aug 2025
81AQISame Day Analysis (1st August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 81 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
Sarnia, Ontario, Canada
AQI
Day
Night
.
6 AM1st Aug 2025
9 PM
5 AM2nd Aug 2025
Day time
Avg. Highest Time
6AM1st Aug
80AQI
Avg. Lowest Time
7PM1st Aug
32AQI
Night time
Avg. Highest Time
9PM1st Aug
56AQI
Avg. Lowest Time
11PM1st Aug
25AQI
In the last 24 hours,
Sarnia's AQI reached its highest point of 80 at 6 AM during the Day, while the lowest point, 25, was recorded at 11 PM during the Night between 1st Aug and 2nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Sarnia, 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 2025456 AMAQI
3rd Jul 2025527 AMAQI
3rd Jul 2025538 AMAQI
3rd Jul 2025549 AMAQI
3rd Jul 20255310 AMAQI
3rd Jul 20255211 AMAQI
3rd Jul 20255312 PMAQI
3rd Jul 2025511 PMAQI
3rd Jul 2025522 PMAQI
3rd Jul 2025543 PMAQI
3rd Jul 2025544 PMAQI
3rd Jul 2025525 PMAQI
3rd Jul 2025526 PMAQI
3rd Jul 2025527 PMAQI
3rd Jul 2025538 PMAQI
3rd Jul 2025539 PMAQI
3rd Jul 20255410 PMAQI
3rd Jul 20255311 PMAQI
4th Jul 20255212 AMAQI
4th Jul 2025501 AMAQI
4th Jul 2025442 AMAQI
4th Jul 2025453 AMAQI
4th Jul 2025454 AMAQI
4th Jul 2025445 AMAQI
21°C17/25°C
4th Jul 2025466 AMAQI
4th Jul 2025427 AMAQI
4th Jul 2025438 AMAQI
4th Jul 2025439 AMAQI
4th Jul 20254210 AMAQI
4th Jul 20254211 AMAQI
4th Jul 20254212 PMAQI
4th Jul 2025401 PMAQI
4th Jul 2025442 PMAQI
4th Jul 2025513 PMAQI
4th Jul 2025524 PMAQI
4th Jul 2025525 PMAQI
4th Jul 2025536 PMAQI
4th Jul 2025517 PMAQI
4th Jul 2025528 PMAQI
4th Jul 2025509 PMAQI
4th Jul 20255010 PMAQI
4th Jul 20255111 PMAQI
5th Jul 20255312 AMAQI
5th Jul 2025571 AMAQI
5th Jul 2025662 AMAQI
5th Jul 2025543 AMAQI
5th Jul 2025534 AMAQI
5th Jul 2025525 AMAQI
22°C14/30°C
5th Jul 2025526 AMAQI
5th Jul 2025537 AMAQI
5th Jul 2025538 AMAQI
5th Jul 2025529 AMAQI
5th Jul 20255410 AMAQI
5th Jul 20255611 AMAQI
5th Jul 20255512 PMAQI
5th Jul 2025561 PMAQI
5th Jul 2025552 PMAQI
5th Jul 2025563 PMAQI
5th Jul 2025554 PMAQI
5th Jul 2025565 PMAQI
5th Jul 2025566 PMAQI
5th Jul 2025557 PMAQI
5th Jul 2025568 PMAQI
5th Jul 2025569 PMAQI
5th Jul 20255510 PMAQI
5th Jul 20255511 PMAQI
6th Jul 20255912 AMAQI
6th Jul 2025541 AMAQI
6th Jul 2025542 AMAQI
6th Jul 2025553 AMAQI
6th Jul 2025544 AMAQI
6th Jul 2025555 AMAQI
25°C18/33°C
6th Jul 2025556 AMAQI
6th Jul 2025567 AMAQI
6th Jul 2025588 AMAQI
6th Jul 2025589 AMAQI
6th Jul 20255810 AMAQI
6th Jul 20255811 AMAQI
6th Jul 20255812 PMAQI
6th Jul 2025581 PMAQI
6th Jul 2025582 PMAQI
6th Jul 2025583 PMAQI
6th Jul 2025574 PMAQI
6th Jul 2025575 PMAQI
6th Jul 2025586 PMAQI
6th Jul 2025577 PMAQI
6th Jul 2025578 PMAQI
6th Jul 2025589 PMAQI
6th Jul 20255610 PMAQI
6th Jul 20255311 PMAQI
7th Jul 20255312 AMAQI
7th Jul 2025501 AMAQI
7th Jul 2025412 AMAQI
7th Jul 2025383 AMAQI
7th Jul 2025364 AMAQI
7th Jul 2025345 AMAQI
27°C22/34°C
7th Jul 2025286 AMAQI
7th Jul 2025257 AMAQI
7th Jul 2025238 AMAQI
7th Jul 2025259 AMAQI
7th Jul 20252410 AMAQI
7th Jul 20252411 AMAQI
7th Jul 20252412 PMAQI
7th Jul 2025241 PMAQI
7th Jul 2025242 PMAQI
7th Jul 2025273 PMAQI
7th Jul 2025304 PMAQI
7th Jul 2025325 PMAQI
7th Jul 2025366 PMAQI
7th Jul 2025377 PMAQI
7th Jul 2025388 PMAQI
7th Jul 2025369 PMAQI
7th Jul 20253510 PMAQI
7th Jul 20253911 PMAQI
8th Jul 20253712 AMAQI
8th Jul 2025361 AMAQI
8th Jul 2025382 AMAQI
8th Jul 2025383 AMAQI
8th Jul 2025424 AMAQI
8th Jul 2025435 AMAQI
19°C17/21°C
8th Jul 2025416 AMAQI
8th Jul 2025437 AMAQI
8th Jul 2025438 AMAQI
8th Jul 2025459 AMAQI
8th Jul 20254510 AMAQI
8th Jul 20253911 AMAQI
8th Jul 20253512 PMAQI
8th Jul 2025351 PMAQI
8th Jul 2025362 PMAQI
8th Jul 2025443 PMAQI
8th Jul 2025474 PMAQI
8th Jul 2025505 PMAQI
8th Jul 2025526 PMAQI
8th Jul 2025517 PMAQI
8th Jul 2025508 PMAQI
8th Jul 2025459 PMAQI
8th Jul 20254610 PMAQI
8th Jul 20255111 PMAQI
9th Jul 20255412 AMAQI
9th Jul 2025541 AMAQI
9th Jul 2025562 AMAQI
9th Jul 2025563 AMAQI
9th Jul 2025574 AMAQI
9th Jul 2025605 AMAQI
20°C15/25°C
9th Jul 2025606 AMAQI
9th Jul 2025587 AMAQI
9th Jul 2025558 AMAQI
9th Jul 2025559 AMAQI
9th Jul 20256010 AMAQI
9th Jul 20255911 AMAQI
9th Jul 20255912 PMAQI
9th Jul 2025571 PMAQI
9th Jul 2025562 PMAQI
9th Jul 2025573 PMAQI
9th Jul 2025554 PMAQI
9th Jul 2025555 PMAQI
9th Jul 2025556 PMAQI
9th Jul 2025547 PMAQI
9th Jul 2025558 PMAQI
9th Jul 2025569 PMAQI
9th Jul 20255410 PMAQI
9th Jul 20255211 PMAQI
10th Jul 20255212 AMAQI
10th Jul 2025481 AMAQI
10th Jul 2025412 AMAQI
10th Jul 2025423 AMAQI
10th Jul 2025404 AMAQI
10th Jul 2025405 AMAQI
22°C18/27°C
10th Jul 2025436 AMAQI
10th Jul 2025447 AMAQI
10th Jul 2025468 AMAQI
10th Jul 2025489 AMAQI
10th Jul 20254710 AMAQI
10th Jul 20254811 AMAQI
10th Jul 20254812 PMAQI
10th Jul 2025491 PMAQI
10th Jul 2025502 PMAQI
10th Jul 2025453 PMAQI
10th Jul 2025444 PMAQI
10th Jul 2025485 PMAQI
10th Jul 2025476 PMAQI
10th Jul 2025487 PMAQI
10th Jul 2025498 PMAQI
10th Jul 2025479 PMAQI
10th Jul 20254610 PMAQI
10th Jul 20254711 PMAQI
11th Jul 20254812 AMAQI
11th Jul 2025501 AMAQI
11th Jul 2025502 AMAQI
11th Jul 2025503 AMAQI
11th Jul 2025494 AMAQI
11th Jul 2025485 AMAQI
21°C17/25°C
11th Jul 2025496 AMAQI
11th Jul 2025517 AMAQI
11th Jul 2025528 AMAQI
11th Jul 2025529 AMAQI
11th Jul 20255210 AMAQI
11th Jul 20255011 AMAQI
11th Jul 20255012 PMAQI
11th Jul 2025521 PMAQI
11th Jul 2025522 PMAQI
11th Jul 2025523 PMAQI
11th Jul 2025524 PMAQI
11th Jul 2025525 PMAQI
11th Jul 2025526 PMAQI
11th Jul 2025497 PMAQI
11th Jul 2025508 PMAQI
11th Jul 2025509 PMAQI
11th Jul 20254910 PMAQI
11th Jul 20254411 PMAQI
12th Jul 20254312 AMAQI
12th Jul 2025441 AMAQI
12th Jul 2025372 AMAQI
12th Jul 2025353 AMAQI
12th Jul 2025354 AMAQI
12th Jul 2025335 AMAQI
22°C18/26°C
12th Jul 2025356 AMAQI
12th Jul 2025377 AMAQI
12th Jul 2025408 AMAQI
12th Jul 2025399 AMAQI
12th Jul 20254010 AMAQI
12th Jul 20254111 AMAQI
12th Jul 20254212 PMAQI
12th Jul 2025441 PMAQI
12th Jul 2025482 PMAQI
12th Jul 2025473 PMAQI
12th Jul 2025464 PMAQI
12th Jul 2025435 PMAQI
12th Jul 2025406 PMAQI
12th Jul 2025387 PMAQI
12th Jul 2025388 PMAQI
12th Jul 2025399 PMAQI
12th Jul 20254010 PMAQI
12th Jul 20254211 PMAQI
13th Jul 20254212 AMAQI
13th Jul 2025411 AMAQI
13th Jul 2025372 AMAQI
13th Jul 2025383 AMAQI
13th Jul 2025384 AMAQI
13th Jul 2025395 AMAQI
26°C20/34°C
13th Jul 2025386 AMAQI
13th Jul 2025377 AMAQI
13th Jul 2025368 AMAQI
13th Jul 2025379 AMAQI
13th Jul 20253810 AMAQI
13th Jul 20253911 AMAQI
13th Jul 20254412 PMAQI
13th Jul 2025501 PMAQI
13th Jul 2025562 PMAQI
13th Jul 2025553 PMAQI
13th Jul 2025524 PMAQI
13th Jul 2025425 PMAQI
13th Jul 2025426 PMAQI
13th Jul 2025427 PMAQI
13th Jul 2025438 PMAQI
13th Jul 2025429 PMAQI
13th Jul 20254210 PMAQI
13th Jul 20254611 PMAQI
14th Jul 20255012 AMAQI
14th Jul 2025501 AMAQI
14th Jul 2025582 AMAQI
14th Jul 2025673 AMAQI
14th Jul 2025764 AMAQI
14th Jul 2025735 AMAQI
25°C21/30°C
14th Jul 2025706 AMAQI
14th Jul 2025727 AMAQI
14th Jul 2025718 AMAQI
14th Jul 2025769 AMAQI
14th Jul 20257610 AMAQI
14th Jul 20257711 AMAQI
14th Jul 20257412 PMAQI
14th Jul 2025771 PMAQI
14th Jul 2025802 PMAQI
14th Jul 2025883 PMAQI
14th Jul 2025844 PMAQI
14th Jul 2025805 PMAQI
14th Jul 2025786 PMAQI
14th Jul 2025707 PMAQI
14th Jul 2025788 PMAQI
14th Jul 2025729 PMAQI
14th Jul 20257110 PMAQI
14th Jul 20257011 PMAQI
15th Jul 20257112 AMAQI
15th Jul 2025721 AMAQI
15th Jul 2025762 AMAQI
15th Jul 2025803 AMAQI
15th Jul 2025824 AMAQI
15th Jul 2025855 AMAQI
25°C19/30°C
15th Jul 2025846 AMAQI
15th Jul 2025817 AMAQI
15th Jul 2025828 AMAQI
15th Jul 2025929 AMAQI
15th Jul 20259210 AMAQI
15th Jul 20259211 AMAQI
15th Jul 20259412 PMAQI
15th Jul 2025971 PMAQI
15th Jul 2025992 PMAQI
15th Jul 2025963 PMAQI
15th Jul 2025994 PMAQI
15th Jul 2025975 PMAQI
15th Jul 2025946 PMAQI
15th Jul 2025967 PMAQI
15th Jul 2025958 PMAQI
15th Jul 2025929 PMAQI
15th Jul 20259310 PMAQI
15th Jul 20259111 PMAQI
16th Jul 20259212 AMAQI
16th Jul 2025971 AMAQI
16th Jul 2025962 AMAQI
16th Jul 2025983 AMAQI
16th Jul 2025994 AMAQI
16th Jul 2025995 AMAQI
24°C16/32°C
16th Jul 2025976 AMAQI
16th Jul 2025957 AMAQI
16th Jul 2025958 AMAQI
16th Jul 2025949 AMAQI
16th Jul 20259610 AMAQI
16th Jul 20259311 AMAQI
16th Jul 20259112 PMAQI
16th Jul 2025861 PMAQI
16th Jul 2025842 PMAQI
16th Jul 2025793 PMAQI
16th Jul 2025754 PMAQI
16th Jul 2025705 PMAQI
16th Jul 2025726 PMAQI
16th Jul 2025667 PMAQI
16th Jul 2025628 PMAQI
16th Jul 2025829 PMAQI
16th Jul 20258010 PMAQI
16th Jul 20256411 PMAQI
17th Jul 20256112 AMAQI
17th Jul 2025601 AMAQI
17th Jul 2025422 AMAQI
17th Jul 2025383 AMAQI
17th Jul 2025394 AMAQI
17th Jul 2025485 AMAQI
23°C17/29°C
17th Jul 2025416 AMAQI
17th Jul 2025407 AMAQI
17th Jul 2025408 AMAQI
17th Jul 2025369 AMAQI
17th Jul 20253510 AMAQI
17th Jul 20253511 AMAQI
17th Jul 20254412 PMAQI
17th Jul 2025641 PMAQI
17th Jul 2025572 PMAQI
17th Jul 2025343 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 20253410 PMAQI
17th Jul 20253211 PMAQI
18th Jul 20253412 AMAQI
18th Jul 2025331 AMAQI
18th Jul 2025322 AMAQI
18th Jul 2025303 AMAQI
18th Jul 2025304 AMAQI
18th Jul 2025325 AMAQI
22°C18/23°C
18th Jul 2025326 AMAQI
18th Jul 2025317 AMAQI
18th Jul 2025298 AMAQI
18th Jul 2025289 AMAQI
18th Jul 20253010 AMAQI
18th Jul 20253111 AMAQI
18th Jul 20253012 PMAQI
18th Jul 2025291 PMAQI
18th Jul 2025282 PMAQI
18th Jul 2025303 PMAQI
18th Jul 2025284 PMAQI
18th Jul 2025275 PMAQI
18th Jul 2025276 PMAQI
18th Jul 2025277 PMAQI
18th Jul 2025278 PMAQI
18th Jul 2025269 PMAQI
18th Jul 20252610 PMAQI
18th Jul 20252711 PMAQI
19th Jul 20252912 AMAQI
19th Jul 2025281 AMAQI
19th Jul 2025352 AMAQI
19th Jul 2025393 AMAQI
19th Jul 2025424 AMAQI
19th Jul 2025355 AMAQI
19°C13/25°C
19th Jul 2025346 AMAQI
19th Jul 2025367 AMAQI
19th Jul 2025368 AMAQI
19th Jul 2025349 AMAQI
19th Jul 20253410 AMAQI
19th Jul 20253611 AMAQI
19th Jul 20252712 PMAQI
19th Jul 2025271 PMAQI
19th Jul 2025262 PMAQI
19th Jul 2025353 PMAQI
19th Jul 2025334 PMAQI
19th Jul 2025345 PMAQI
19th Jul 2025356 PMAQI
19th Jul 2025357 PMAQI
19th Jul 2025348 PMAQI
19th Jul 2025349 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20253711 PMAQI
20th Jul 20253512 AMAQI
20th Jul 2025341 AMAQI
20th Jul 2025312 AMAQI
20th Jul 2025373 AMAQI
20th Jul 2025314 AMAQI
20th Jul 2025385 AMAQI
20°C13/26°C
20th Jul 2025276 AMAQI
20th Jul 2025307 AMAQI
20th Jul 2025328 AMAQI
20th Jul 2025299 AMAQI
20th Jul 20253110 AMAQI
20th Jul 20253611 AMAQI
20th Jul 20252812 PMAQI
20th Jul 2025261 PMAQI
20th Jul 2025342 PMAQI
20th Jul 2025283 PMAQI
20th Jul 2025274 PMAQI
20th Jul 2025285 PMAQI
20th Jul 2025286 PMAQI
20th Jul 2025287 PMAQI
20th Jul 2025288 PMAQI
20th Jul 2025289 PMAQI
20th Jul 20252810 PMAQI
20th Jul 20253211 PMAQI
21st Jul 20253712 AMAQI
21st Jul 2025401 AMAQI
21st Jul 2025492 AMAQI
21st Jul 2025523 AMAQI
21st Jul 2025524 AMAQI
21st Jul 2025545 AMAQI
21°C17/24°C
21st Jul 2025526 AMAQI
21st Jul 2025507 AMAQI
21st Jul 2025558 AMAQI
21st Jul 2025569 AMAQI
21st Jul 20255810 AMAQI
21st Jul 20255511 AMAQI
21st Jul 20255212 PMAQI
21st Jul 2025491 PMAQI
21st Jul 2025422 PMAQI
21st Jul 2025383 PMAQI
21st Jul 2025364 PMAQI
21st Jul 2025405 PMAQI
21st Jul 2025376 PMAQI
21st Jul 2025367 PMAQI
21st Jul 2025338 PMAQI
21st Jul 2025449 PMAQI
21st Jul 20254410 PMAQI
21st Jul 20253411 PMAQI
22nd Jul 20253212 AMAQI
22nd Jul 2025301 AMAQI
22nd Jul 2025222 AMAQI
22nd Jul 2025203 AMAQI
22nd Jul 2025194 AMAQI
22nd Jul 2025185 AMAQI
19°C15/23°C
22nd Jul 2025196 AMAQI
22nd Jul 2025197 AMAQI
22nd Jul 2025198 AMAQI
22nd Jul 2025209 AMAQI
22nd Jul 20252110 AMAQI
22nd Jul 20252211 AMAQI
22nd Jul 20252412 PMAQI
22nd Jul 2025281 PMAQI
22nd Jul 2025282 PMAQI
22nd Jul 2025263 PMAQI
22nd Jul 2025264 PMAQI
22nd Jul 2025255 PMAQI
22nd Jul 2025246 PMAQI
22nd Jul 2025247 PMAQI
22nd Jul 2025238 PMAQI
22nd Jul 2025229 PMAQI
22nd Jul 20252210 PMAQI
22nd Jul 20252411 PMAQI
23rd Jul 20252412 AMAQI
23rd Jul 2025251 AMAQI
23rd Jul 2025262 AMAQI
23rd Jul 2025253 AMAQI
23rd Jul 2025264 AMAQI
23rd Jul 2025255 AMAQI
20°C13/27°C
23rd Jul 2025276 AMAQI
23rd Jul 2025287 AMAQI
23rd Jul 2025268 AMAQI
23rd Jul 2025259 AMAQI
23rd Jul 20252410 AMAQI
23rd Jul 20252411 AMAQI
23rd Jul 20252512 PMAQI
23rd Jul 2025241 PMAQI
23rd Jul 2025242 PMAQI
23rd Jul 2025243 PMAQI
23rd Jul 2025254 PMAQI
23rd Jul 2025265 PMAQI
23rd Jul 2025266 PMAQI
23rd Jul 2025267 PMAQI
23rd Jul 2025288 PMAQI
23rd Jul 2025269 PMAQI
23rd Jul 20252810 PMAQI
23rd Jul 20253611 PMAQI
24th Jul 20253712 AMAQI
24th Jul 2025391 AMAQI
24th Jul 2025402 AMAQI
24th Jul 2025363 AMAQI
24th Jul 2025364 AMAQI
24th Jul 2025355 AMAQI
22°C14/30°C
24th Jul 2025346 AMAQI
24th Jul 2025377 AMAQI
24th Jul 2025468 AMAQI
24th Jul 2025519 AMAQI
24th Jul 20255410 AMAQI
24th Jul 20255511 AMAQI
24th Jul 20255612 PMAQI
24th Jul 2025571 PMAQI
24th Jul 2025572 PMAQI
24th Jul 2025543 PMAQI
24th Jul 2025514 PMAQI
24th Jul 2025425 PMAQI
24th Jul 2025536 PMAQI
24th Jul 2025557 PMAQI
24th Jul 2025568 PMAQI
24th Jul 2025529 PMAQI
24th Jul 20255010 PMAQI
24th Jul 20254811 PMAQI
25th Jul 20254512 AMAQI
25th Jul 2025411 AMAQI
25th Jul 2025342 AMAQI
25th Jul 2025333 AMAQI
25th Jul 2025334 AMAQI
25th Jul 2025315 AMAQI
26°C18/34°C
25th Jul 2025326 AMAQI
25th Jul 2025327 AMAQI
25th Jul 2025328 AMAQI
25th Jul 2025329 AMAQI
25th Jul 20253010 AMAQI
25th Jul 20253211 AMAQI
25th Jul 20253012 PMAQI
25th Jul 2025301 PMAQI
25th Jul 2025312 PMAQI
25th Jul 2025343 PMAQI
25th Jul 2025394 PMAQI
25th Jul 2025465 PMAQI
25th Jul 2025386 PMAQI
25th Jul 2025327 PMAQI
25th Jul 2025338 PMAQI
25th Jul 2025379 PMAQI
25th Jul 20253910 PMAQI
25th Jul 20255211 PMAQI
26th Jul 20255312 AMAQI
26th Jul 2025501 AMAQI
26th Jul 2025532 AMAQI
26th Jul 2025603 AMAQI
26th Jul 2025634 AMAQI
26th Jul 2025605 AMAQI
22°C19/24°C
26th Jul 2025586 AMAQI
26th Jul 2025587 AMAQI
26th Jul 2025598 AMAQI
26th Jul 2025609 AMAQI
26th Jul 20256110 AMAQI
26th Jul 20255911 AMAQI
26th Jul 20255712 PMAQI
26th Jul 2025551 PMAQI
26th Jul 2025522 PMAQI
26th Jul 2025513 PMAQI
26th Jul 2025524 PMAQI
26th Jul 2025535 PMAQI
26th Jul 2025526 PMAQI
26th Jul 2025527 PMAQI
26th Jul 2025538 PMAQI
26th Jul 2025559 PMAQI
26th Jul 20255610 PMAQI
26th Jul 20255011 PMAQI
27th Jul 20255012 AMAQI
27th Jul 2025441 AMAQI
27th Jul 2025362 AMAQI
27th Jul 2025363 AMAQI
27th Jul 2025334 AMAQI
27th Jul 2025325 AMAQI
23°C19/27°C
27th Jul 2025326 AMAQI
27th Jul 2025337 AMAQI
27th Jul 2025328 AMAQI
27th Jul 2025349 AMAQI
27th Jul 20253210 AMAQI
27th Jul 20253311 AMAQI
27th Jul 20253412 PMAQI
27th Jul 2025341 PMAQI
27th Jul 2025342 PMAQI
27th Jul 2025383 PMAQI
27th Jul 2025374 PMAQI
27th Jul 2025385 PMAQI
27th Jul 2025386 PMAQI
27th Jul 2025387 PMAQI
27th Jul 2025388 PMAQI
27th Jul 2025359 PMAQI
27th Jul 20253610 PMAQI
27th Jul 20253811 PMAQI
28th Jul 20254012 AMAQI
28th Jul 2025431 AMAQI
28th Jul 2025502 AMAQI
28th Jul 2025503 AMAQI
28th Jul 2025504 AMAQI
28th Jul 2025505 AMAQI
24°C21/29°C
28th Jul 2025486 AMAQI
28th Jul 2025437 AMAQI
28th Jul 2025438 AMAQI
28th Jul 2025449 AMAQI
28th Jul 20254610 AMAQI
28th Jul 20254911 AMAQI
28th Jul 20255012 PMAQI
28th Jul 2025471 PMAQI
28th Jul 2025462 PMAQI
28th Jul 2025463 PMAQI
28th Jul 2025464 PMAQI
28th Jul 2025475 PMAQI
28th Jul 2025466 PMAQI
28th Jul 2025477 PMAQI
28th Jul 2025488 PMAQI
28th Jul 2025469 PMAQI
28th Jul 20254410 PMAQI
28th Jul 20254211 PMAQI
29th Jul 20254012 AMAQI
29th Jul 2025371 AMAQI
29th Jul 2025352 AMAQI
29th Jul 2025323 AMAQI
29th Jul 2025334 AMAQI
29th Jul 2025355 AMAQI
26°C19/33°C
29th Jul 2025366 AMAQI
29th Jul 2025397 AMAQI
29th Jul 2025428 AMAQI
29th Jul 2025479 AMAQI
29th Jul 20254610 AMAQI
29th Jul 20254711 AMAQI
29th Jul 20254612 PMAQI
29th Jul 2025451 PMAQI
29th Jul 2025452 PMAQI
29th Jul 2025463 PMAQI
29th Jul 2025464 PMAQI
29th Jul 2025445 PMAQI
29th Jul 2025446 PMAQI
29th Jul 2025427 PMAQI
29th Jul 2025448 PMAQI
29th Jul 2025429 PMAQI
29th Jul 20254010 PMAQI
29th Jul 20254211 PMAQI
30th Jul 20254212 AMAQI
30th Jul 2025431 AMAQI
30th Jul 2025452 AMAQI
30th Jul 2025453 AMAQI
30th Jul 2025464 AMAQI
30th Jul 2025495 AMAQI
22°C19/26°C
30th Jul 2025506 AMAQI
30th Jul 2025517 AMAQI
30th Jul 2025488 AMAQI
30th Jul 2025479 AMAQI
30th Jul 20254210 AMAQI
30th Jul 20254311 AMAQI
30th Jul 20254312 PMAQI
30th Jul 2025481 PMAQI
30th Jul 2025532 PMAQI
30th Jul 2025553 PMAQI
30th Jul 2025574 PMAQI
30th Jul 2025575 PMAQI
30th Jul 2025576 PMAQI
30th Jul 2025577 PMAQI
30th Jul 2025578 PMAQI
30th Jul 2025579 PMAQI
30th Jul 20255710 PMAQI
30th Jul 20255411 PMAQI
31st Jul 20255212 AMAQI
31st Jul 2025541 AMAQI
31st Jul 2025662 AMAQI
31st Jul 2025833 AMAQI
31st Jul 20251044 AMAQI
31st Jul 2025935 AMAQI
22°C19/25°C
31st Jul 20251196 AMAQI
31st Jul 20251227 AMAQI
31st Jul 20251218 AMAQI
31st Jul 20251239 AMAQI
31st Jul 20259010 AMAQI
31st Jul 20257411 AMAQI
31st Jul 202510312 PMAQI
31st Jul 20251391 PMAQI
31st Jul 20251532 PMAQI
31st Jul 20251523 PMAQI
31st Jul 20251504 PMAQI
31st Jul 20251565 PMAQI
31st Jul 20251536 PMAQI
31st Jul 20251527 PMAQI
31st Jul 20251408 PMAQI
31st Jul 20251359 PMAQI
31st Jul 202513210 PMAQI
31st Jul 202510811 PMAQI
1st Aug 202512212 AMAQI
1st Aug 20251201 AMAQI
1st Aug 20251022 AMAQI
1st Aug 2025903 AMAQI
1st Aug 2025924 AMAQI
1st Aug 2025855 AMAQI
20°C18/23°C
1st Aug 2025806 AMAQI
1st Aug 2025757 AMAQI
1st Aug 2025668 AMAQI
1st Aug 2025619 AMAQI
1st Aug 20255510 AMAQI
1st Aug 20255811 AMAQI
1st Aug 20255412 PMAQI
1st Aug 2025541 PMAQI
1st Aug 2025562 PMAQI
1st Aug 2025573 PMAQI
1st Aug 2025554 PMAQI
1st Aug 2025485 PMAQI
1st Aug 2025386 PMAQI
1st Aug 2025327 PMAQI
1st Aug 2025388 PMAQI
1st Aug 2025569 PMAQI
1st Aug 20254010 PMAQI
1st Aug 20252511 PMAQI
2nd Aug 20252812 AMAQI
2nd Aug 2025301 AMAQI
2nd Aug 2025322 AMAQI
2nd Aug 2025323 AMAQI
2nd Aug 2025304 AMAQI
2nd Aug 2025365 AMAQI
20°C15/25°C
2nd Aug 2025396 AMAQI
6 AM2nd Aug 2025447 AMAQI
2nd Aug 2025378 AMAQI
2nd Aug 2025419 AMAQI
2nd Aug 20254110 AMAQI
1 PM
9 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 9 PM
50AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
6 AM - 9 PM
50AQI
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. 50), while the lowest AQI was between 6 AM to 9 PM (Avg. 50).
Night time
Avg. Highest Time
12 AM - 11 PM
49AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
49AQI
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. 49), while the lowest AQI was between 12 AM to 11 PM (Avg. 49).
2025 Days Vs Air Quality
Sarnia, Ontario, Canada
2025
83%
106
16%
21
0.7%
1
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Good
106 DaysModerate
21 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% 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
Sarnia, 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 March 2025
39AQI
39AQI
2nd March 2025
37AQI
37AQI
3rd March 2025
45AQI
45AQI
4th March 2025
41AQI
41AQI
5th March 2025
22AQI
22AQI
1st April 2025
18AQI
18AQI
2nd April 2025
19AQI
19AQI
3rd April 2025
23AQI
23AQI
4th April 2025
18AQI
18AQI
5th April 2025
20AQI
20AQI
6th April 2025
20AQI
20AQI
7th April 2025
20AQI
20AQI
8th April 2025
14AQI
14AQI
9th April 2025
28AQI
28AQI
10th April 2025
33AQI
33AQI
11th April 2025
32AQI
32AQI
12th April 2025
21AQI
21AQI
13th April 2025
40AQI
40AQI
14th April 2025
27AQI
27AQI
15th April 2025
14AQI
14AQI
16th April 2025
14AQI
14AQI
17th April 2025
25AQI
25AQI
18th April 2025
41AQI
41AQI
19th April 2025
41AQI
41AQI
20th April 2025
18AQI
18AQI
21st April 2025
23AQI
23AQI
22nd April 2025
14AQI
14AQI
23rd April 2025
39AQI
39AQI
24th April 2025
50AQI
50AQI
25th April 2025
44AQI
44AQI
26th April 2025
20AQI
20AQI
27th April 2025
20AQI
20AQI
28th April 2025
28AQI
28AQI
29th April 2025
37AQI
37AQI
30th April 2025
15AQI
15AQI
1st May 2025
26AQI
26AQI
2nd May 2025
24AQI
24AQI
3rd May 2025
16AQI
16AQI
4th May 2025
18AQI
18AQI
5th May 2025
22AQI
22AQI
6th May 2025
31AQI
31AQI
7th May 2025
26AQI
26AQI
8th May 2025
18AQI
18AQI
9th May 2025
19AQI
19AQI
10th May 2025
32AQI
32AQI
11th May 2025
24AQI
24AQI
12th May 2025
35AQI
35AQI
13th May 2025
28AQI
28AQI
14th May 2025
19AQI
19AQI
15th May 2025
26AQI
26AQI
16th May 2025
33AQI
33AQI
17th May 2025
25AQI
25AQI
18th May 2025
17AQI
17AQI
19th May 2025
13AQI
13AQI
20th May 2025
17AQI
17AQI
21st May 2025
20AQI
20AQI
22nd May 2025
13AQI
13AQI
23rd May 2025
11AQI
11AQI
24th May 2025
12AQI
12AQI
25th May 2025
28AQI
28AQI
26th May 2025
26AQI
26AQI
27th May 2025
28AQI
28AQI
28th May 2025
21AQI
21AQI
29th May 2025
29AQI
29AQI
30th May 2025
37AQI
37AQI
31st May 2025
28AQI
28AQI
1st June 2025
23AQI
23AQI
2nd June 2025
30AQI
30AQI
3rd June 2025
46AQI
46AQI
4th June 2025
71AQI
71AQI
5th June 2025
72AQI
72AQI
6th June 2025
84AQI
84AQI
7th June 2025
70AQI
70AQI
8th June 2025
95AQI
95AQI
9th June 2025
81AQI
81AQI
10th June 2025
57AQI
57AQI
11th June 2025
70AQI
70AQI
12th June 2025
78AQI
78AQI
13th June 2025
47AQI
47AQI
14th June 2025
38AQI
38AQI
15th June 2025
36AQI
36AQI
16th June 2025
38AQI
38AQI
17th June 2025
42AQI
42AQI
18th June 2025
34AQI
34AQI
19th June 2025
23AQI
23AQI
20th June 2025
37AQI
37AQI
21st June 2025
43AQI
43AQI
22nd June 2025
43AQI
43AQI
23rd June 2025
54AQI
54AQI
24th June 2025
55AQI
55AQI
25th June 2025
43AQI
43AQI
26th June 2025
51AQI
51AQI
27th June 2025
47AQI
47AQI
28th June 2025
29AQI
29AQI
29th June 2025
38AQI
38AQI
30th June 2025
36AQI
36AQI
1st July 2025
30AQI
30AQI
2nd July 2025
42AQI
42AQI
3rd July 2025
52AQI
52AQI
4th July 2025
48AQI
48AQI
5th July 2025
55AQI
55AQI
6th July 2025
57AQI
57AQI
7th July 2025
37AQI
37AQI
8th July 2025
43AQI
43AQI
9th July 2025
56AQI
56AQI
10th July 2025
47AQI
47AQI
11th July 2025
49AQI
49AQI
12th July 2025
40AQI
40AQI
13th July 2025
42AQI
42AQI
14th July 2025
69AQI
69AQI
15th July 2025
86AQI
86AQI
16th July 2025
86AQI
86AQI
17th July 2025
44AQI
44AQI
18th July 2025
30AQI
30AQI
19th July 2025
34AQI
34AQI
20th July 2025
31AQI
31AQI
21st July 2025
43AQI
43AQI
22nd July 2025
24AQI
24AQI
23rd July 2025
26AQI
26AQI
24th July 2025
45AQI
45AQI
25th July 2025
37AQI
37AQI
26th July 2025
55AQI
55AQI
27th July 2025
38AQI
38AQI
28th July 2025
45AQI
45AQI
29th July 2025
41AQI
41AQI
30th July 2025
49AQI
49AQI
31st July 2025
106AQI
106AQI
1st August 2025
81AQI
81AQI
37AQI
26AQI
23AQI
50AQI
48AQI
81AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202537AQI
5
30
31
18
12
22
8
1
1
106
21
1
Highest AQI recorded in
August81AQI
Lowest AQI recorded in
May23AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
37AQILeast Polluted Year Recorded
2025(Avg.)
37AQISarnia's annual 2025 AQI (37) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
