Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

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+

November Air Quality Analysis

Sarnia, Ontario, Canada

2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
21st Nov 2025
68AQI
Lowest AQI recorded on
10th Nov 2025
16AQI

Same Day Analysis (26th November ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 42 of Good air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 26th Nov - 27th Nov 2025

Sarnia, Ontario, Canada

AQI
Day
Night
.

7 AM26th Nov 2025

5 PM

6 AM27th Nov 2025

Day time
Avg. Highest Time
7AM26th Nov

58AQI

Avg. Lowest Time
4PM26th Nov

26AQI

Night time
Avg. Highest Time
10PM26th Nov

28AQI

Avg. Lowest Time
6AM27th Nov

13AQI

In the last 24 hours,

Sarnia's AQI reached its highest point of 58 at 7 AM during the Day, while the lowest point, 13, was recorded at 6 AM during the Night between 26th Nov and 27th Nov 2025.

Day & Night AQI Trend : Oct - Nov 2025

Sarnia, Ontario, Canada

OctNov
28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th
Day
Night
28th Oct 2025287 AMAQI
28th Oct 2025288 AMAQI
28th Oct 2025329 AMAQI
28th Oct 20253310 AMAQI
28th Oct 20253311 AMAQI
28th Oct 20253312 PMAQI
28th Oct 2025301 PMAQI
28th Oct 2025322 PMAQI
28th Oct 2025333 PMAQI
28th Oct 2025304 PMAQI
28th Oct 2025285 PMAQI
28th Oct 2025286 PMAQI
28th Oct 2025287 PMAQI
28th Oct 2025308 PMAQI
28th Oct 2025349 PMAQI
28th Oct 20253410 PMAQI
28th Oct 20253311 PMAQI
29th Oct 20253312 AMAQI
29th Oct 2025331 AMAQI
29th Oct 2025332 AMAQI
29th Oct 2025333 AMAQI
29th Oct 2025334 AMAQI
29th Oct 2025335 AMAQI
29th Oct 2025336 AMAQI

8°C3/17°C

29th Oct 2025337 AMAQI
29th Oct 2025338 AMAQI
29th Oct 2025379 AMAQI
29th Oct 20254210 AMAQI
29th Oct 20255011 AMAQI
29th Oct 20255312 PMAQI
29th Oct 2025531 PMAQI
29th Oct 2025482 PMAQI
29th Oct 2025453 PMAQI
29th Oct 2025484 PMAQI
29th Oct 2025455 PMAQI
29th Oct 2025446 PMAQI
29th Oct 2025507 PMAQI
29th Oct 2025528 PMAQI
29th Oct 2025489 PMAQI
29th Oct 20254210 PMAQI
29th Oct 20254811 PMAQI
30th Oct 20254912 AMAQI
30th Oct 2025481 AMAQI
30th Oct 2025412 AMAQI
30th Oct 2025393 AMAQI
30th Oct 2025394 AMAQI
30th Oct 2025375 AMAQI
30th Oct 2025356 AMAQI

8°C3/16°C

30th Oct 2025337 AMAQI
30th Oct 2025338 AMAQI
30th Oct 2025339 AMAQI
30th Oct 20253310 AMAQI
30th Oct 20253311 AMAQI
30th Oct 20253312 PMAQI
30th Oct 2025331 PMAQI
30th Oct 2025332 PMAQI
30th Oct 2025333 PMAQI
30th Oct 2025364 PMAQI
30th Oct 2025355 PMAQI
30th Oct 2025336 PMAQI
30th Oct 2025307 PMAQI
30th Oct 2025258 PMAQI
30th Oct 2025229 PMAQI
30th Oct 20252210 PMAQI
30th Oct 20252611 PMAQI
31st Oct 20252412 AMAQI
31st Oct 2025221 AMAQI
31st Oct 2025222 AMAQI
31st Oct 2025223 AMAQI
31st Oct 2025264 AMAQI
31st Oct 2025285 AMAQI
31st Oct 2025286 AMAQI

8°C5/11°C

31st Oct 2025287 AMAQI
31st Oct 2025288 AMAQI
31st Oct 2025289 AMAQI
31st Oct 20252810 AMAQI
31st Oct 20252811 AMAQI
31st Oct 20252812 PMAQI
31st Oct 2025281 PMAQI
31st Oct 2025282 PMAQI
31st Oct 2025283 PMAQI
31st Oct 2025244 PMAQI
31st Oct 2025225 PMAQI
31st Oct 2025226 PMAQI
31st Oct 2025227 PMAQI
31st Oct 2025148 PMAQI
31st Oct 2025239 PMAQI
31st Oct 20253110 PMAQI
31st Oct 20253111 PMAQI
1st Nov 20252112 AMAQI
1st Nov 2025171 AMAQI
1st Nov 2025252 AMAQI
1st Nov 2025283 AMAQI
1st Nov 2025284 AMAQI
1st Nov 2025285 AMAQI
1st Nov 2025286 AMAQI

7°C5/8°C

1st Nov 2025287 AMAQI
1st Nov 2025288 AMAQI
1st Nov 2025329 AMAQI
1st Nov 20253310 AMAQI
1st Nov 20253611 AMAQI
1st Nov 20254112 PMAQI
1st Nov 2025461 PMAQI
1st Nov 2025422 PMAQI
1st Nov 2025313 PMAQI
1st Nov 2025324 PMAQI
1st Nov 2025305 PMAQI
1st Nov 2025326 PMAQI
1st Nov 2025337 PMAQI
1st Nov 2025388 PMAQI
1st Nov 2025399 PMAQI
1st Nov 20254410 PMAQI
1st Nov 20255311 PMAQI
2nd Nov 20255812 AMAQI
2nd Nov 2025591 AMAQI
2nd Nov 2025562 AMAQI
2nd Nov 2025573 AMAQI
2nd Nov 2025564 AMAQI
2nd Nov 2025585 AMAQI
2nd Nov 2025426 AMAQI

7°C2/12°C

2nd Nov 2025397 AMAQI
2nd Nov 2025388 AMAQI
2nd Nov 2025439 AMAQI
2nd Nov 20254510 AMAQI
2nd Nov 20255011 AMAQI
2nd Nov 20255112 PMAQI
2nd Nov 2025501 PMAQI
2nd Nov 2025522 PMAQI
2nd Nov 2025523 PMAQI
2nd Nov 2025524 PMAQI
2nd Nov 2025525 PMAQI
2nd Nov 2025526 PMAQI
2nd Nov 2025517 PMAQI
2nd Nov 2025528 PMAQI
2nd Nov 2025519 PMAQI
2nd Nov 20255210 PMAQI
2nd Nov 20255111 PMAQI
3rd Nov 20255312 AMAQI
3rd Nov 2025511 AMAQI
3rd Nov 2025492 AMAQI
3rd Nov 2025453 AMAQI
3rd Nov 2025464 AMAQI
3rd Nov 2025515 AMAQI
3rd Nov 2025516 AMAQI

7°C-1/16°C

3rd Nov 2025487 AMAQI
3rd Nov 2025488 AMAQI
3rd Nov 2025499 AMAQI
3rd Nov 20254810 AMAQI
3rd Nov 20254811 AMAQI
3rd Nov 20254712 PMAQI
3rd Nov 2025491 PMAQI
3rd Nov 2025452 PMAQI
3rd Nov 2025443 PMAQI
3rd Nov 2025354 PMAQI
3rd Nov 2025295 PMAQI
3rd Nov 2025236 PMAQI
3rd Nov 2025227 PMAQI
3rd Nov 2025228 PMAQI
3rd Nov 2025229 PMAQI
3rd Nov 20252210 PMAQI
3rd Nov 20252211 PMAQI
4th Nov 20252512 AMAQI
4th Nov 2025231 AMAQI
4th Nov 2025222 AMAQI
4th Nov 2025223 AMAQI
4th Nov 2025224 AMAQI
4th Nov 2025265 AMAQI
4th Nov 2025286 AMAQI

8°C5/17°C

4th Nov 2025287 AMAQI
4th Nov 2025288 AMAQI
4th Nov 2025289 AMAQI
4th Nov 20252910 AMAQI
4th Nov 20253011 AMAQI
4th Nov 20252912 PMAQI
4th Nov 2025281 PMAQI
4th Nov 2025282 PMAQI
4th Nov 2025233 PMAQI
4th Nov 2025224 PMAQI
4th Nov 2025225 PMAQI
4th Nov 2025226 PMAQI
4th Nov 2025287 PMAQI
4th Nov 2025338 PMAQI
4th Nov 2025349 PMAQI
4th Nov 20253510 PMAQI
4th Nov 20253711 PMAQI
5th Nov 20254112 AMAQI
5th Nov 2025431 AMAQI
5th Nov 2025402 AMAQI
5th Nov 2025343 AMAQI
5th Nov 2025294 AMAQI
5th Nov 2025275 AMAQI
5th Nov 2025286 AMAQI

10°C3/19°C

5th Nov 2025287 AMAQI
5th Nov 2025228 AMAQI
5th Nov 2025229 AMAQI
5th Nov 20252810 AMAQI
5th Nov 20253811 AMAQI
5th Nov 20253912 PMAQI
5th Nov 2025391 PMAQI
5th Nov 2025432 PMAQI
5th Nov 2025513 PMAQI
5th Nov 2025554 PMAQI
5th Nov 2025455 PMAQI
5th Nov 2025446 PMAQI
5th Nov 2025317 PMAQI
5th Nov 2025248 PMAQI
5th Nov 2025189 PMAQI
5th Nov 20251210 PMAQI
5th Nov 20252111 PMAQI
6th Nov 20252112 AMAQI
6th Nov 2025141 AMAQI
6th Nov 2025162 AMAQI
6th Nov 2025213 AMAQI
6th Nov 2025184 AMAQI
6th Nov 2025175 AMAQI
6th Nov 2025176 AMAQI

10°C5/16°C

6th Nov 2025177 AMAQI
6th Nov 2025178 AMAQI
6th Nov 2025179 AMAQI
6th Nov 20252010 AMAQI
6th Nov 20252611 AMAQI
6th Nov 20252312 PMAQI
6th Nov 2025181 PMAQI
6th Nov 2025332 PMAQI
6th Nov 2025163 PMAQI
6th Nov 2025184 PMAQI
6th Nov 2025345 PMAQI
6th Nov 2025216 PMAQI
6th Nov 2025227 PMAQI
6th Nov 2025298 PMAQI
6th Nov 2025339 PMAQI
6th Nov 20252910 PMAQI
6th Nov 20252411 PMAQI
7th Nov 20252212 AMAQI
7th Nov 2025221 AMAQI
7th Nov 2025222 AMAQI
7th Nov 2025183 AMAQI
7th Nov 2025214 AMAQI
7th Nov 2025185 AMAQI
7th Nov 2025176 AMAQI

5°C0/13°C

7th Nov 2025217 AMAQI
7th Nov 2025228 AMAQI
7th Nov 2025229 AMAQI
7th Nov 20252210 AMAQI
7th Nov 20252211 AMAQI
7th Nov 20252212 PMAQI
7th Nov 2025221 PMAQI
7th Nov 2025302 PMAQI
7th Nov 2025413 PMAQI
7th Nov 2025494 PMAQI
7th Nov 2025545 PMAQI
7th Nov 2025546 PMAQI
7th Nov 2025557 PMAQI
7th Nov 2025568 PMAQI
7th Nov 2025549 PMAQI
7th Nov 20254710 PMAQI
7th Nov 20254011 PMAQI
8th Nov 20253912 AMAQI
8th Nov 2025391 AMAQI
8th Nov 2025422 AMAQI
8th Nov 2025373 AMAQI
8th Nov 2025244 AMAQI
8th Nov 2025195 AMAQI
8th Nov 2025216 AMAQI

8°C6/11°C

8th Nov 2025147 AMAQI
8th Nov 2025138 AMAQI
8th Nov 2025139 AMAQI
8th Nov 20251310 AMAQI
8th Nov 20251511 AMAQI
8th Nov 20252112 PMAQI
8th Nov 2025341 PMAQI
8th Nov 2025312 PMAQI
8th Nov 2025213 PMAQI
8th Nov 2025144 PMAQI
8th Nov 2025205 PMAQI
8th Nov 2025176 PMAQI
8th Nov 2025177 PMAQI
8th Nov 2025268 PMAQI
8th Nov 2025369 PMAQI
8th Nov 20253910 PMAQI
8th Nov 20252411 PMAQI
9th Nov 20251712 AMAQI
9th Nov 2025421 AMAQI
9th Nov 2025282 AMAQI
9th Nov 2025173 AMAQI
9th Nov 2025174 AMAQI
9th Nov 2025175 AMAQI
9th Nov 2025176 AMAQI

5°C2/8°C

9th Nov 2025257 AMAQI
9th Nov 2025248 AMAQI
9th Nov 2025229 AMAQI
9th Nov 20252210 AMAQI
9th Nov 20252211 AMAQI
9th Nov 20251812 PMAQI
9th Nov 2025171 PMAQI
9th Nov 2025172 PMAQI
9th Nov 2025213 PMAQI
9th Nov 2025184 PMAQI
9th Nov 2025175 PMAQI
9th Nov 2025176 PMAQI
9th Nov 2025177 PMAQI
9th Nov 2025178 PMAQI
9th Nov 2025179 PMAQI
9th Nov 20251710 PMAQI
9th Nov 20251711 PMAQI
10th Nov 20251712 AMAQI
10th Nov 2025171 AMAQI
10th Nov 2025172 AMAQI
10th Nov 2025133 AMAQI
10th Nov 2025114 AMAQI
10th Nov 2025165 AMAQI
10th Nov 2025136 AMAQI

1°C0/3°C

10th Nov 2025117 AMAQI
10th Nov 2025118 AMAQI
10th Nov 2025119 AMAQI
10th Nov 20251510 AMAQI
10th Nov 20251711 AMAQI
10th Nov 20251712 PMAQI
10th Nov 2025171 PMAQI
10th Nov 2025172 PMAQI
10th Nov 2025173 PMAQI
10th Nov 2025174 PMAQI
10th Nov 2025175 PMAQI
10th Nov 2025176 PMAQI
10th Nov 2025177 PMAQI
10th Nov 2025178 PMAQI
10th Nov 2025179 PMAQI
10th Nov 20251710 PMAQI
10th Nov 20252011 PMAQI
11th Nov 20252212 AMAQI
11th Nov 2025221 AMAQI
11th Nov 2025222 AMAQI
11th Nov 2025183 AMAQI
11th Nov 2025214 AMAQI
11th Nov 2025215 AMAQI
11th Nov 2025226 AMAQI

-1°C-4/0°C

11th Nov 2025227 AMAQI
11th Nov 2025228 AMAQI
11th Nov 2025189 AMAQI
11th Nov 20251710 AMAQI
11th Nov 20252011 AMAQI
11th Nov 20252212 PMAQI
11th Nov 2025231 PMAQI
11th Nov 2025282 PMAQI
11th Nov 2025323 PMAQI
11th Nov 2025334 PMAQI
11th Nov 2025335 PMAQI
11th Nov 2025356 PMAQI
11th Nov 2025437 PMAQI
11th Nov 2025428 PMAQI
11th Nov 2025429 PMAQI
11th Nov 20254210 PMAQI
11th Nov 20253611 PMAQI
12th Nov 20253412 AMAQI
12th Nov 2025371 AMAQI
12th Nov 2025352 AMAQI
12th Nov 2025363 AMAQI
12th Nov 2025384 AMAQI
12th Nov 2025385 AMAQI
12th Nov 2025366 AMAQI

0°C-5/4°C

12th Nov 2025377 AMAQI
12th Nov 2025398 AMAQI
12th Nov 2025429 AMAQI
12th Nov 20254210 AMAQI
12th Nov 20254611 AMAQI
12th Nov 20254612 PMAQI
12th Nov 2025471 PMAQI
12th Nov 2025412 PMAQI
12th Nov 2025393 PMAQI
12th Nov 2025364 PMAQI
12th Nov 2025345 PMAQI
12th Nov 2025296 PMAQI
12th Nov 2025287 PMAQI
12th Nov 2025288 PMAQI
12th Nov 2025289 PMAQI
12th Nov 20252810 PMAQI
12th Nov 20252811 PMAQI
13th Nov 20252812 AMAQI
13th Nov 2025281 AMAQI
13th Nov 2025282 AMAQI
13th Nov 2025283 AMAQI
13th Nov 2025284 AMAQI
13th Nov 2025285 AMAQI
13th Nov 2025286 AMAQI

5°C1/9°C

13th Nov 2025287 AMAQI
13th Nov 2025288 AMAQI
13th Nov 2025289 AMAQI
13th Nov 20252810 AMAQI
13th Nov 20252811 AMAQI
13th Nov 20253212 PMAQI
13th Nov 2025281 PMAQI
13th Nov 2025252 PMAQI
13th Nov 2025273 PMAQI
13th Nov 2025264 PMAQI
13th Nov 2025285 PMAQI
13th Nov 2025286 PMAQI
13th Nov 2025287 PMAQI
13th Nov 2025328 PMAQI
13th Nov 2025499 PMAQI
13th Nov 20255910 PMAQI
13th Nov 20255311 PMAQI
14th Nov 20255012 AMAQI
14th Nov 2025531 AMAQI
14th Nov 2025532 AMAQI
14th Nov 2025423 AMAQI
14th Nov 2025384 AMAQI
14th Nov 2025385 AMAQI
14th Nov 2025426 AMAQI

5°C0/12°C

14th Nov 2025417 AMAQI
14th Nov 2025428 AMAQI
14th Nov 2025409 AMAQI
14th Nov 20254110 AMAQI
14th Nov 20254411 AMAQI
14th Nov 20254212 PMAQI
14th Nov 2025421 PMAQI
14th Nov 2025402 PMAQI
14th Nov 2025383 PMAQI
14th Nov 2025394 PMAQI
14th Nov 2025445 PMAQI
14th Nov 2025496 PMAQI
14th Nov 2025497 PMAQI
14th Nov 2025548 PMAQI
14th Nov 2025589 PMAQI
14th Nov 20255710 PMAQI
14th Nov 20255711 PMAQI
15th Nov 20255712 AMAQI
15th Nov 2025541 AMAQI
15th Nov 2025522 AMAQI
15th Nov 2025523 AMAQI
15th Nov 2025554 AMAQI
15th Nov 2025565 AMAQI
15th Nov 2025586 AMAQI

6°C-2/16°C

15th Nov 2025607 AMAQI
15th Nov 2025618 AMAQI
15th Nov 2025599 AMAQI
15th Nov 20256010 AMAQI
15th Nov 20256811 AMAQI
15th Nov 20257412 PMAQI
15th Nov 2025761 PMAQI
15th Nov 2025732 PMAQI
15th Nov 2025683 PMAQI
15th Nov 2025634 PMAQI
15th Nov 2025635 PMAQI
15th Nov 2025626 PMAQI
15th Nov 2025647 PMAQI
15th Nov 2025648 PMAQI
15th Nov 2025619 PMAQI
15th Nov 20256110 PMAQI
15th Nov 20255911 PMAQI
16th Nov 20255312 AMAQI
16th Nov 2025351 AMAQI
16th Nov 2025282 AMAQI
16th Nov 2025283 AMAQI
16th Nov 2025284 AMAQI
16th Nov 2025305 AMAQI
16th Nov 2025326 AMAQI

10°C3/17°C

16th Nov 2025307 AMAQI
16th Nov 2025288 AMAQI
16th Nov 2025269 AMAQI
16th Nov 20252410 AMAQI
16th Nov 20252211 AMAQI
16th Nov 20252112 PMAQI
16th Nov 2025221 PMAQI
16th Nov 2025222 PMAQI
16th Nov 2025223 PMAQI
16th Nov 2025184 PMAQI
16th Nov 2025175 PMAQI
16th Nov 2025176 PMAQI
16th Nov 2025177 PMAQI
16th Nov 2025228 PMAQI
16th Nov 2025189 PMAQI
16th Nov 20251710 PMAQI
16th Nov 20251711 PMAQI
17th Nov 20252012 AMAQI
17th Nov 2025221 AMAQI
17th Nov 2025222 AMAQI
17th Nov 2025183 AMAQI
17th Nov 2025174 AMAQI
17th Nov 2025175 AMAQI
17th Nov 2025176 AMAQI

5°C2/6°C

17th Nov 2025217 AMAQI
17th Nov 2025228 AMAQI
17th Nov 2025239 AMAQI
17th Nov 20252710 AMAQI
17th Nov 20252811 AMAQI
17th Nov 20252812 PMAQI
17th Nov 2025271 PMAQI
17th Nov 2025232 PMAQI
17th Nov 2025183 PMAQI
17th Nov 2025174 PMAQI
17th Nov 2025175 PMAQI
17th Nov 2025216 PMAQI
17th Nov 2025257 PMAQI
17th Nov 2025328 PMAQI
17th Nov 2025389 PMAQI
17th Nov 20253910 PMAQI
17th Nov 20254711 PMAQI
18th Nov 20255512 AMAQI
18th Nov 2025591 AMAQI
18th Nov 2025622 AMAQI
18th Nov 2025653 AMAQI
18th Nov 2025604 AMAQI
18th Nov 2025585 AMAQI
18th Nov 2025566 AMAQI

2°C-2/5°C

18th Nov 2025557 AMAQI
18th Nov 2025558 AMAQI
18th Nov 2025259 AMAQI
18th Nov 20254410 AMAQI
18th Nov 20255611 AMAQI
18th Nov 20255912 PMAQI
18th Nov 2025491 PMAQI
18th Nov 2025362 PMAQI
18th Nov 2025343 PMAQI
18th Nov 2025364 PMAQI
18th Nov 2025325 PMAQI
18th Nov 2025396 PMAQI
18th Nov 2025377 PMAQI
18th Nov 2025388 PMAQI
18th Nov 2025489 PMAQI
18th Nov 20254610 PMAQI
18th Nov 20254011 PMAQI
19th Nov 20253912 AMAQI
19th Nov 2025461 AMAQI
19th Nov 2025512 AMAQI
19th Nov 2025533 AMAQI
19th Nov 2025554 AMAQI
19th Nov 2025475 AMAQI
19th Nov 2025346 AMAQI

1°C-5/7°C

19th Nov 2025287 AMAQI
19th Nov 2025288 AMAQI
19th Nov 2025329 AMAQI
19th Nov 20253710 AMAQI
19th Nov 20253911 AMAQI
19th Nov 20253412 PMAQI
19th Nov 2025291 PMAQI
19th Nov 2025282 PMAQI
19th Nov 2025283 PMAQI
19th Nov 2025284 PMAQI
19th Nov 2025285 PMAQI
19th Nov 2025286 PMAQI
19th Nov 2025317 PMAQI
19th Nov 2025338 PMAQI
19th Nov 2025489 PMAQI
19th Nov 20257110 PMAQI
19th Nov 20256511 PMAQI
20th Nov 20255712 AMAQI
20th Nov 2025441 AMAQI
20th Nov 2025422 AMAQI
20th Nov 2025423 AMAQI
20th Nov 2025404 AMAQI
20th Nov 2025395 AMAQI
20th Nov 2025396 AMAQI

2°C-2/7°C

20th Nov 2025487 AMAQI
20th Nov 2025508 AMAQI
20th Nov 2025509 AMAQI
20th Nov 20255310 AMAQI
20th Nov 20255411 AMAQI
20th Nov 20255212 PMAQI
20th Nov 2025501 PMAQI
20th Nov 2025462 PMAQI
20th Nov 2025513 PMAQI
20th Nov 2025524 PMAQI
20th Nov 2025505 PMAQI
20th Nov 2025506 PMAQI
20th Nov 2025517 PMAQI
20th Nov 2025528 PMAQI
20th Nov 2025539 PMAQI
20th Nov 20255610 PMAQI
20th Nov 20256311 PMAQI
21st Nov 20256712 AMAQI
21st Nov 2025731 AMAQI
21st Nov 2025832 AMAQI
21st Nov 2025903 AMAQI
21st Nov 2025904 AMAQI
21st Nov 2025895 AMAQI
21st Nov 2025846 AMAQI

2°C-4/8°C

21st Nov 2025787 AMAQI
21st Nov 2025708 AMAQI
21st Nov 2025689 AMAQI
21st Nov 20256810 AMAQI
21st Nov 20256811 AMAQI
21st Nov 20256712 PMAQI
21st Nov 2025621 PMAQI
21st Nov 2025562 PMAQI
21st Nov 2025513 PMAQI
21st Nov 2025504 PMAQI
21st Nov 2025495 PMAQI
21st Nov 2025496 PMAQI
21st Nov 2025527 PMAQI
21st Nov 2025538 PMAQI
21st Nov 2025629 PMAQI
21st Nov 20256310 PMAQI
21st Nov 20256111 PMAQI
22nd Nov 20255812 AMAQI
22nd Nov 2025561 AMAQI
22nd Nov 2025522 AMAQI
22nd Nov 2025453 AMAQI
22nd Nov 2025404 AMAQI
22nd Nov 2025385 AMAQI
22nd Nov 2025366 AMAQI

8°C4/12°C

22nd Nov 2025377 AMAQI
22nd Nov 2025388 AMAQI
22nd Nov 2025349 AMAQI
22nd Nov 20252910 AMAQI
22nd Nov 20252811 AMAQI
22nd Nov 20252812 PMAQI
22nd Nov 2025241 PMAQI
22nd Nov 2025252 PMAQI
22nd Nov 2025233 PMAQI
22nd Nov 2025274 PMAQI
22nd Nov 2025285 PMAQI
22nd Nov 2025286 PMAQI
22nd Nov 2025327 PMAQI
22nd Nov 2025458 PMAQI
22nd Nov 2025549 PMAQI
22nd Nov 20255810 PMAQI
22nd Nov 20255011 PMAQI
23rd Nov 20254812 AMAQI
23rd Nov 2025461 AMAQI
23rd Nov 2025482 AMAQI
23rd Nov 2025463 AMAQI
23rd Nov 2025464 AMAQI
23rd Nov 2025515 AMAQI
23rd Nov 2025516 AMAQI

3°C0/8°C

23rd Nov 2025537 AMAQI
23rd Nov 2025558 AMAQI
23rd Nov 2025559 AMAQI
23rd Nov 20255610 AMAQI
23rd Nov 20255811 AMAQI
23rd Nov 20255412 PMAQI
23rd Nov 2025481 PMAQI
23rd Nov 2025412 PMAQI
23rd Nov 2025343 PMAQI
23rd Nov 2025334 PMAQI
23rd Nov 2025295 PMAQI
23rd Nov 2025286 PMAQI
23rd Nov 2025287 PMAQI
23rd Nov 2025288 PMAQI
23rd Nov 2025349 PMAQI
23rd Nov 20253510 PMAQI
23rd Nov 20254111 PMAQI
24th Nov 20253912 AMAQI
24th Nov 2025381 AMAQI
24th Nov 2025342 AMAQI
24th Nov 2025333 AMAQI
24th Nov 2025334 AMAQI
24th Nov 2025375 AMAQI
24th Nov 2025396 AMAQI

5°C1/14°C

24th Nov 2025397 AMAQI
24th Nov 2025428 AMAQI
24th Nov 2025499 AMAQI
24th Nov 20255110 AMAQI
24th Nov 20256511 AMAQI
24th Nov 20257112 PMAQI
24th Nov 2025511 PMAQI
24th Nov 2025402 PMAQI
24th Nov 2025393 PMAQI
24th Nov 2025374 PMAQI
24th Nov 2025435 PMAQI
24th Nov 2025396 PMAQI
24th Nov 2025467 PMAQI
24th Nov 2025588 PMAQI
24th Nov 2025609 PMAQI
24th Nov 20258010 PMAQI
24th Nov 20258111 PMAQI
25th Nov 20256112 AMAQI
25th Nov 2025531 AMAQI
25th Nov 2025542 AMAQI
25th Nov 2025543 AMAQI
25th Nov 2025604 AMAQI
25th Nov 2025515 AMAQI
25th Nov 2025536 AMAQI

4°C-4/12°C

25th Nov 2025557 AMAQI
25th Nov 2025508 AMAQI
25th Nov 2025499 AMAQI
25th Nov 20255310 AMAQI
25th Nov 20255211 AMAQI
25th Nov 20254812 PMAQI
25th Nov 2025511 PMAQI
25th Nov 2025532 PMAQI
25th Nov 2025533 PMAQI
25th Nov 2025524 PMAQI
25th Nov 2025515 PMAQI
25th Nov 2025546 PMAQI
25th Nov 2025537 PMAQI
25th Nov 2025568 PMAQI
25th Nov 2025579 PMAQI
25th Nov 20256010 PMAQI
25th Nov 20256411 PMAQI
26th Nov 20256512 AMAQI
26th Nov 2025621 AMAQI
26th Nov 2025582 AMAQI
26th Nov 2025583 AMAQI
26th Nov 2025604 AMAQI
26th Nov 2025615 AMAQI
26th Nov 2025606 AMAQI

8°C6/13°C

26th Nov 2025587 AMAQI
26th Nov 2025558 AMAQI
26th Nov 2025559 AMAQI
26th Nov 20255310 AMAQI
26th Nov 20254611 AMAQI
26th Nov 20254412 PMAQI
26th Nov 2025311 PMAQI
26th Nov 2025282 PMAQI
26th Nov 2025283 PMAQI
26th Nov 2025264 PMAQI
26th Nov 2025235 PMAQI
26th Nov 2025226 PMAQI
26th Nov 2025227 PMAQI
26th Nov 2025228 PMAQI
26th Nov 2025269 PMAQI
26th Nov 20252810 PMAQI
26th Nov 20252411 PMAQI
27th Nov 20251812 AMAQI
27th Nov 2025171 AMAQI
27th Nov 2025172 AMAQI
27th Nov 2025173 AMAQI
27th Nov 2025174 AMAQI
27th Nov 2025175 AMAQI
27th Nov 2025136 AMAQI

5°C0/9°C

27th Nov 2025117 AMAQI
7 AM
27th Nov 2025168 AMAQI
27th Nov 2025179 AMAQI
27th Nov 20251310 AMAQI
27th Nov 20251111 AMAQI
27th Nov 20251112 PMAQI
12 PM
27th Nov 2025111 PMAQI
27th Nov 2025112 PMAQI
27th Nov 2025113 PMAQI
27th Nov 2025114 PMAQI
27th Nov 2025115 PMAQI
5 PM
12 AM
6 AM

--°C/°C

Day time
Avg. Highest Time
11 AM - 1 PM

38AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
4 PM - 5 PM

33AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 1 PM (Avg. 38), while the lowest AQI was between 4 PM to 5 PM (Avg. 33).
Night time
Avg. Highest Time
10 PM - 11 PM

41AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
6 PM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 41), while the lowest AQI was between 6 PM to 6 PM (Avg. 33).

2025 Days Vs Air Quality

Sarnia, Ontario, Canada

2025

80%

197

18%

45

1%

3

Total number of days with different AQI categories in last 331 days in 2025 (34 days remaining)

Good
197 Days
Moderate
45 Days
Poor
3 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 80%

Health Risk Level:

Low

In 2025, 80% of 331 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.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
2nd January 2025
3rd January 2025
4th January 2025
5th January 2025
6th January 2025
7th January 2025
8th January 2025
9th January 2025
10th January 2025
11th January 2025
12th January 2025
13th January 2025
14th January 2025
15th January 2025
16th January 2025
17th January 2025
18th January 2025
19th January 2025
20th January 2025
21st January 2025
22nd January 2025
23rd January 2025
24th January 2025
25th January 2025
26th January 2025
27th January 2025
28th January 2025
29th January 2025
30th January 2025
31st January 2025
1st February 2025
2nd February 2025
3rd February 2025
4th February 2025
5th February 2025
6th February 2025
7th February 2025
8th February 2025
9th February 2025
10th February 2025
11th February 2025
12th February 2025
13th February 2025
14th February 2025
15th February 2025
16th February 2025
17th February 2025
18th February 2025
19th February 2025
20th February 2025
21st February 2025
22nd February 2025
23rd February 2025
24th February 2025
25th February 2025
26th February 2025
27th February 2025
28th February 2025
1st March 2025
2nd March 2025
3rd March 2025
4th March 2025
5th March 2025
6th March 2025
7th March 2025
8th March 2025
9th March 2025
10th March 2025
11th March 2025
12th March 2025
13th March 2025
14th March 2025
15th March 2025
16th March 2025
17th March 2025
18th March 2025
19th March 2025
20th March 2025
21st March 2025
22nd March 2025
23rd March 2025
24th March 2025
25th March 2025
26th March 2025
27th March 2025
39AQI
28th March 2025
37AQI
29th March 2025
45AQI
30th March 2025
41AQI
31st March 2025
22AQI
1st April 2025
18AQI
2nd April 2025
19AQI
3rd April 2025
23AQI
4th April 2025
18AQI
5th April 2025
20AQI
6th April 2025
20AQI
7th April 2025
20AQI
8th April 2025
14AQI
9th April 2025
28AQI
10th April 2025
33AQI
11th April 2025
32AQI
12th April 2025
21AQI
13th April 2025
40AQI
14th April 2025
27AQI
15th April 2025
14AQI
16th April 2025
14AQI
17th April 2025
25AQI
18th April 2025
41AQI
19th April 2025
41AQI
20th April 2025
18AQI
21st April 2025
23AQI
22nd April 2025
14AQI
23rd April 2025
39AQI
24th April 2025
50AQI
25th April 2025
44AQI
26th April 2025
20AQI
27th April 2025
20AQI
28th April 2025
28AQI
29th April 2025
37AQI
30th April 2025
15AQI
1st May 2025
26AQI
2nd May 2025
24AQI
3rd May 2025
16AQI
4th May 2025
18AQI
5th May 2025
22AQI
6th May 2025
31AQI
7th May 2025
26AQI
8th May 2025
18AQI
9th May 2025
19AQI
10th May 2025
32AQI
11th May 2025
24AQI
12th May 2025
35AQI
13th May 2025
28AQI
14th May 2025
19AQI
15th May 2025
26AQI
16th May 2025
33AQI
17th May 2025
25AQI
18th May 2025
17AQI
19th May 2025
13AQI
20th May 2025
17AQI
21st May 2025
20AQI
22nd May 2025
13AQI
23rd May 2025
11AQI
24th May 2025
12AQI
25th May 2025
28AQI
26th May 2025
26AQI
27th May 2025
28AQI
28th May 2025
21AQI
29th May 2025
29AQI
30th May 2025
37AQI
31st May 2025
28AQI
1st June 2025
23AQI
2nd June 2025
30AQI
3rd June 2025
46AQI
4th June 2025
71AQI
5th June 2025
72AQI
6th June 2025
84AQI
7th June 2025
70AQI
8th June 2025
95AQI
9th June 2025
81AQI
10th June 2025
57AQI
11th June 2025
70AQI
12th June 2025
78AQI
13th June 2025
47AQI
14th June 2025
38AQI
15th June 2025
36AQI
16th June 2025
38AQI
17th June 2025
42AQI
18th June 2025
34AQI
19th June 2025
23AQI
20th June 2025
37AQI
21st June 2025
43AQI
22nd June 2025
43AQI
23rd June 2025
54AQI
24th June 2025
55AQI
25th June 2025
43AQI
26th June 2025
51AQI
27th June 2025
47AQI
28th June 2025
29AQI
29th June 2025
38AQI
30th June 2025
36AQI
1st July 2025
30AQI
2nd July 2025
42AQI
3rd July 2025
52AQI
4th July 2025
48AQI
5th July 2025
55AQI
6th July 2025
57AQI
7th July 2025
37AQI
8th July 2025
43AQI
9th July 2025
56AQI
10th July 2025
47AQI
11th July 2025
49AQI
12th July 2025
40AQI
13th July 2025
42AQI
14th July 2025
69AQI
15th July 2025
86AQI
16th July 2025
86AQI
17th July 2025
44AQI
18th July 2025
30AQI
19th July 2025
34AQI
20th July 2025
31AQI
21st July 2025
43AQI
22nd July 2025
24AQI
23rd July 2025
26AQI
24th July 2025
45AQI
25th July 2025
37AQI
26th July 2025
55AQI
27th July 2025
38AQI
28th July 2025
45AQI
29th July 2025
41AQI
30th July 2025
49AQI
31st July 2025
106AQI
1st August 2025
74AQI
2nd August 2025
40AQI
3rd August 2025
98AQI
4th August 2025
133AQI
5th August 2025
107AQI
6th August 2025
92AQI
7th August 2025
80AQI
8th August 2025
70AQI
9th August 2025
57AQI
10th August 2025
62AQI
11th August 2025
59AQI
12th August 2025
48AQI
13th August 2025
34AQI
14th August 2025
65AQI
15th August 2025
79AQI
16th August 2025
68AQI
17th August 2025
41AQI
18th August 2025
16AQI
19th August 2025
22AQI
20th August 2025
19AQI
21st August 2025
18AQI
22nd August 2025
21AQI
23rd August 2025
31AQI
24th August 2025
26AQI
25th August 2025
16AQI
26th August 2025
19AQI
27th August 2025
23AQI
28th August 2025
29AQI
29th August 2025
19AQI
30th August 2025
20AQI
31st August 2025
35AQI
1st September 2025
32AQI
2nd September 2025
29AQI
3rd September 2025
33AQI
4th September 2025
25AQI
5th September 2025
36AQI
6th September 2025
19AQI
7th September 2025
20AQI
8th September 2025
21AQI
9th September 2025
22AQI
10th September 2025
35AQI
11th September 2025
43AQI
12th September 2025
37AQI
13th September 2025
53AQI
14th September 2025
65AQI
15th September 2025
52AQI
16th September 2025
44AQI
17th September 2025
40AQI
18th September 2025
52AQI
19th September 2025
37AQI
20th September 2025
22AQI
21st September 2025
25AQI
22nd September 2025
40AQI
23rd September 2025
41AQI
24th September 2025
39AQI
25th September 2025
30AQI
26th September 2025
32AQI
27th September 2025
36AQI
28th September 2025
35AQI
29th September 2025
28AQI
30th September 2025
24AQI
1st October 2025
34AQI
2nd October 2025
33AQI
3rd October 2025
57AQI
4th October 2025
63AQI
5th October 2025
65AQI
6th October 2025
58AQI
7th October 2025
17AQI
8th October 2025
24AQI
9th October 2025
33AQI
10th October 2025
39AQI
11th October 2025
35AQI
12th October 2025
53AQI
13th October 2025
49AQI
14th October 2025
45AQI
15th October 2025
20AQI
16th October 2025
34AQI
17th October 2025
40AQI
18th October 2025
52AQI
19th October 2025
45AQI
20th October 2025
22AQI
21st October 2025
25AQI
22nd October 2025
23AQI
23rd October 2025
19AQI
24th October 2025
21AQI
25th October 2025
32AQI
26th October 2025
37AQI
27th October 2025
33AQI
28th October 2025
32AQI
29th October 2025
42AQI
30th October 2025
34AQI
31st October 2025
25AQI
1st November 2025
33AQI
2nd November 2025
52AQI
3rd November 2025
39AQI
4th November 2025
27AQI
5th November 2025
32AQI
6th November 2025
22AQI
7th November 2025
33AQI
8th November 2025
26AQI
9th November 2025
20AQI
10th November 2025
16AQI
11th November 2025
28AQI
12th November 2025
35AQI
13th November 2025
32AQI
14th November 2025
47AQI
15th November 2025
61AQI
16th November 2025
25AQI
17th November 2025
25AQI
18th November 2025
49AQI
19th November 2025
41AQI
20th November 2025
49AQI
21st November 2025
68AQI
22nd November 2025
40AQI
23rd November 2025
43AQI
24th November 2025
48AQI
25th November 2025
55AQI
26th November 2025
42AQI
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

37AQI

26AQI

23AQI

50AQI

48AQI

49AQI

35AQI

37AQI

38AQI

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202538AQI

5
30
31
18
12
22
8
1
18
11
2
26
4
25
6
22
4
197
45
3

Highest AQI recorded in

June

50AQI

Lowest AQI recorded in

May

23AQI

Most & Least Polluted Years Over the Last 1 Years

Most Polluted Year Recorded
2025(Avg.)
38AQI
Least Polluted Year Recorded
2025(Avg.)
38AQI

Sarnia's annual 2025 AQI (38) shows an average percentage change of NaN% (improved AQI) compared to previous years: .