Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Ottawa, 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+

July Air Quality Analysis

Ottawa, Ontario, Canada

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Jul 2023
112AQI
Lowest AQI recorded on
9th Jul 2022
17AQI

Same Day Analysis (29th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 34 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 29th Jul - 30th Jul 2026

Ottawa, Ontario, Canada

AQI
Day
Night
.

5 AM29th Jul 2026

8 PM

4 AM30th Jul 2026

Day time
Avg. Highest Time
5AM29th Jul

50AQI

Avg. Lowest Time
4PM29th Jul

23AQI

Night time
Avg. Highest Time
4AM30th Jul

46AQI

Avg. Lowest Time
9PM29th Jul

24AQI

In the last 24 hours,

Ottawa's AQI reached its highest point of 50 at 5 AM during the Day, while the lowest point, 23, was recorded at 4 PM during the Day between 29th Jul and 30th Jul 2026.

Day & Night AQI Trend : Jul 2026

Ottawa, Ontario, Canada

Jul
01st - 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 - 28th28th - 29th29th - 30th30th
Day
Night
1st Jul 2026265 AMAQI
1st Jul 2026256 AMAQI
1st Jul 2026277 AMAQI
1st Jul 2026288 AMAQI
1st Jul 2026299 AMAQI
1st Jul 20262810 AMAQI
1st Jul 20263011 AMAQI
1st Jul 20263012 PMAQI
1st Jul 2026301 PMAQI
1st Jul 2026282 PMAQI
1st Jul 2026283 PMAQI
1st Jul 2026284 PMAQI
1st Jul 2026325 PMAQI
1st Jul 2026356 PMAQI
1st Jul 2026287 PMAQI
1st Jul 2026278 PMAQI
1st Jul 2026279 PMAQI
1st Jul 20262210 PMAQI
1st Jul 20262011 PMAQI
2nd Jul 20262212 AMAQI
2nd Jul 2026241 AMAQI
2nd Jul 2026252 AMAQI
2nd Jul 2026243 AMAQI
2nd Jul 2026264 AMAQI

26°C20/33°C

2nd Jul 2026285 AMAQI
2nd Jul 2026276 AMAQI
2nd Jul 2026287 AMAQI
2nd Jul 2026278 AMAQI
2nd Jul 2026279 AMAQI
2nd Jul 20262810 AMAQI
2nd Jul 20262811 AMAQI
2nd Jul 20262812 PMAQI
2nd Jul 2026261 PMAQI
2nd Jul 2026292 PMAQI
2nd Jul 2026263 PMAQI
2nd Jul 2026284 PMAQI
2nd Jul 2026265 PMAQI
2nd Jul 2026386 PMAQI
2nd Jul 2026287 PMAQI
2nd Jul 2026268 PMAQI
2nd Jul 2026289 PMAQI
2nd Jul 20262510 PMAQI
2nd Jul 20262711 PMAQI
3rd Jul 20262812 AMAQI
3rd Jul 2026301 AMAQI
3rd Jul 2026282 AMAQI
3rd Jul 2026293 AMAQI
3rd Jul 2026294 AMAQI

27°C22/34°C

3rd Jul 2026285 AMAQI
3rd Jul 2026296 AMAQI
3rd Jul 2026297 AMAQI
3rd Jul 2026288 AMAQI
3rd Jul 2026299 AMAQI
3rd Jul 20263010 AMAQI
3rd Jul 20263011 AMAQI
3rd Jul 20263012 PMAQI
3rd Jul 2026301 PMAQI
3rd Jul 2026302 PMAQI
3rd Jul 2026263 PMAQI
3rd Jul 2026264 PMAQI
3rd Jul 2026285 PMAQI
3rd Jul 2026286 PMAQI
3rd Jul 2026287 PMAQI
3rd Jul 2026268 PMAQI
3rd Jul 2026279 PMAQI
3rd Jul 20262510 PMAQI
3rd Jul 20262511 PMAQI
4th Jul 20262712 AMAQI
4th Jul 2026261 AMAQI
4th Jul 2026282 AMAQI
4th Jul 2026283 AMAQI
4th Jul 2026274 AMAQI

26°C21/31°C

4th Jul 2026275 AMAQI
4th Jul 2026256 AMAQI
4th Jul 2026267 AMAQI
4th Jul 2026288 AMAQI
4th Jul 2026279 AMAQI
4th Jul 20262610 AMAQI
4th Jul 20262811 AMAQI
4th Jul 20262812 PMAQI
4th Jul 2026241 PMAQI
4th Jul 2026262 PMAQI
4th Jul 2026243 PMAQI
4th Jul 2026244 PMAQI
4th Jul 2026245 PMAQI
4th Jul 2026256 PMAQI
4th Jul 2026247 PMAQI
4th Jul 2026208 PMAQI
4th Jul 2026219 PMAQI
4th Jul 20261910 PMAQI
4th Jul 20262111 PMAQI
5th Jul 20262212 AMAQI
5th Jul 2026231 AMAQI
5th Jul 2026262 AMAQI
5th Jul 2026283 AMAQI
5th Jul 2026274 AMAQI

24°C20/29°C

5th Jul 2026265 AMAQI
5th Jul 2026266 AMAQI
5th Jul 2026247 AMAQI
5th Jul 2026268 AMAQI
5th Jul 2026259 AMAQI
5th Jul 20262710 AMAQI
5th Jul 20263011 AMAQI
5th Jul 20262912 PMAQI
5th Jul 2026281 PMAQI
5th Jul 2026302 PMAQI
5th Jul 2026273 PMAQI
5th Jul 2026304 PMAQI
5th Jul 2026275 PMAQI
5th Jul 2026276 PMAQI
5th Jul 2026287 PMAQI
5th Jul 2026218 PMAQI
5th Jul 2026369 PMAQI
5th Jul 20262210 PMAQI
5th Jul 20262111 PMAQI
6th Jul 20262012 AMAQI
6th Jul 2026231 AMAQI
6th Jul 2026262 AMAQI
6th Jul 2026263 AMAQI
6th Jul 2026224 AMAQI

21°C14/28°C

6th Jul 2026225 AMAQI
6th Jul 2026226 AMAQI
6th Jul 2026287 AMAQI
6th Jul 2026298 AMAQI
6th Jul 2026309 AMAQI
6th Jul 20263010 AMAQI
6th Jul 20263011 AMAQI
6th Jul 20263112 PMAQI
6th Jul 2026321 PMAQI
6th Jul 2026312 PMAQI
6th Jul 2026303 PMAQI
6th Jul 2026314 PMAQI
6th Jul 2026325 PMAQI
6th Jul 2026306 PMAQI
6th Jul 2026317 PMAQI
6th Jul 2026268 PMAQI
6th Jul 2026279 PMAQI
6th Jul 20262510 PMAQI
6th Jul 20262311 PMAQI
7th Jul 20262312 AMAQI
7th Jul 2026251 AMAQI
7th Jul 2026302 AMAQI
7th Jul 2026283 AMAQI
7th Jul 2026474 AMAQI

23°C15/31°C

7th Jul 2026305 AMAQI
7th Jul 2026316 AMAQI
7th Jul 2026307 AMAQI
7th Jul 2026298 AMAQI
7th Jul 2026299 AMAQI
7th Jul 20262710 AMAQI
7th Jul 20263211 AMAQI
7th Jul 20263212 PMAQI
7th Jul 2026321 PMAQI
7th Jul 2026322 PMAQI
7th Jul 2026293 PMAQI
7th Jul 2026304 PMAQI
7th Jul 2026315 PMAQI
7th Jul 2026326 PMAQI
7th Jul 2026307 PMAQI
7th Jul 2026298 PMAQI
7th Jul 2026279 PMAQI
7th Jul 20262610 PMAQI
7th Jul 20262811 PMAQI
8th Jul 20262612 AMAQI
8th Jul 2026261 AMAQI
8th Jul 2026302 AMAQI
8th Jul 2026303 AMAQI
8th Jul 2026264 AMAQI

25°C18/31°C

8th Jul 2026265 AMAQI
8th Jul 2026216 AMAQI
8th Jul 2026237 AMAQI
8th Jul 2026248 AMAQI
8th Jul 2026249 AMAQI
8th Jul 20262810 AMAQI
8th Jul 20263011 AMAQI
8th Jul 20263012 PMAQI
8th Jul 2026321 PMAQI
8th Jul 2026302 PMAQI
8th Jul 2026283 PMAQI
8th Jul 2026304 PMAQI
8th Jul 2026295 PMAQI
8th Jul 2026306 PMAQI
8th Jul 2026287 PMAQI
8th Jul 2026258 PMAQI
8th Jul 2026259 PMAQI
8th Jul 20262410 PMAQI
8th Jul 20262711 PMAQI
9th Jul 20262912 AMAQI
9th Jul 2026241 AMAQI
9th Jul 2026282 AMAQI
9th Jul 2026283 AMAQI
9th Jul 2026284 AMAQI

25°C18/31°C

9th Jul 2026265 AMAQI
9th Jul 2026276 AMAQI
9th Jul 2026287 AMAQI
9th Jul 2026268 AMAQI
9th Jul 2026269 AMAQI
9th Jul 20263010 AMAQI
9th Jul 20263011 AMAQI
9th Jul 20263112 PMAQI
9th Jul 2026301 PMAQI
9th Jul 2026302 PMAQI
9th Jul 2026283 PMAQI
9th Jul 2026304 PMAQI
9th Jul 2026305 PMAQI
9th Jul 2026316 PMAQI
9th Jul 2026307 PMAQI
9th Jul 2026318 PMAQI
9th Jul 2026319 PMAQI
9th Jul 20263010 PMAQI
9th Jul 20262911 PMAQI
10th Jul 20262612 AMAQI
10th Jul 2026261 AMAQI
10th Jul 2026242 AMAQI
10th Jul 2026273 AMAQI
10th Jul 2026324 AMAQI

22°C19/24°C

10th Jul 2026315 AMAQI
10th Jul 2026336 AMAQI
10th Jul 2026347 AMAQI
10th Jul 2026338 AMAQI
10th Jul 2026349 AMAQI
10th Jul 20263610 AMAQI
10th Jul 20263511 AMAQI
10th Jul 20263712 PMAQI
10th Jul 2026331 PMAQI
10th Jul 2026342 PMAQI
10th Jul 2026313 PMAQI
10th Jul 2026534 PMAQI
10th Jul 2026675 PMAQI
10th Jul 2026586 PMAQI
10th Jul 2026537 PMAQI
10th Jul 2026508 PMAQI
10th Jul 2026509 PMAQI
10th Jul 20265210 PMAQI
10th Jul 20265311 PMAQI
11th Jul 20265812 AMAQI
11th Jul 2026581 AMAQI
11th Jul 2026542 AMAQI
11th Jul 2026503 AMAQI
11th Jul 2026484 AMAQI

22°C16/29°C

11th Jul 2026395 AMAQI
11th Jul 2026396 AMAQI
11th Jul 2026367 AMAQI
11th Jul 2026348 AMAQI
11th Jul 2026339 AMAQI
11th Jul 20263210 AMAQI
11th Jul 20263211 AMAQI
11th Jul 20263212 PMAQI
11th Jul 2026321 PMAQI
11th Jul 2026332 PMAQI
11th Jul 2026283 PMAQI
11th Jul 2026354 PMAQI
11th Jul 2026755 PMAQI
11th Jul 2026926 PMAQI
11th Jul 2026877 PMAQI
11th Jul 2026718 PMAQI
11th Jul 2026919 PMAQI
11th Jul 20268210 PMAQI
11th Jul 20268011 PMAQI
12th Jul 20267312 AMAQI
12th Jul 2026761 AMAQI
12th Jul 2026732 AMAQI
12th Jul 2026773 AMAQI
12th Jul 2026884 AMAQI

22°C15/29°C

12th Jul 2026885 AMAQI
12th Jul 2026886 AMAQI
12th Jul 2026867 AMAQI
12th Jul 2026888 AMAQI
12th Jul 2026929 AMAQI
12th Jul 20268610 AMAQI
12th Jul 20268811 AMAQI
12th Jul 20269212 PMAQI
12th Jul 2026861 PMAQI
12th Jul 2026742 PMAQI
12th Jul 2026493 PMAQI
12th Jul 2026504 PMAQI
12th Jul 2026485 PMAQI
12th Jul 2026446 PMAQI
12th Jul 2026437 PMAQI
12th Jul 2026408 PMAQI
12th Jul 2026409 PMAQI
12th Jul 20264310 PMAQI
12th Jul 20264811 PMAQI
13th Jul 20264712 AMAQI
13th Jul 2026451 AMAQI
13th Jul 2026452 AMAQI
13th Jul 2026403 AMAQI
13th Jul 2026384 AMAQI

22°C14/32°C

13th Jul 2026375 AMAQI
13th Jul 2026386 AMAQI
13th Jul 2026457 AMAQI
13th Jul 2026518 AMAQI
13th Jul 2026569 AMAQI
13th Jul 20266110 AMAQI
13th Jul 20266411 AMAQI
13th Jul 20266912 PMAQI
13th Jul 2026711 PMAQI
13th Jul 2026682 PMAQI
13th Jul 2026673 PMAQI
13th Jul 2026644 PMAQI
13th Jul 2026585 PMAQI
13th Jul 2026536 PMAQI
13th Jul 2026497 PMAQI
13th Jul 2026468 PMAQI
13th Jul 2026449 PMAQI
13th Jul 20264510 PMAQI
13th Jul 20264411 PMAQI
14th Jul 20264612 AMAQI
14th Jul 2026421 AMAQI
14th Jul 2026362 AMAQI
14th Jul 2026363 AMAQI
14th Jul 2026364 AMAQI

24°C17/30°C

14th Jul 2026365 AMAQI
14th Jul 2026356 AMAQI
14th Jul 2026367 AMAQI
14th Jul 2026378 AMAQI
14th Jul 2026379 AMAQI
14th Jul 20263810 AMAQI
14th Jul 20263811 AMAQI
14th Jul 20264112 PMAQI
14th Jul 2026381 PMAQI
14th Jul 2026352 PMAQI
14th Jul 2026373 PMAQI
14th Jul 2026404 PMAQI
14th Jul 2026405 PMAQI
14th Jul 2026426 PMAQI
14th Jul 2026577 PMAQI
14th Jul 2026478 PMAQI
14th Jul 2026669 PMAQI
14th Jul 20268010 PMAQI
14th Jul 20267611 PMAQI
15th Jul 20267012 AMAQI
15th Jul 2026681 AMAQI
15th Jul 2026662 AMAQI
15th Jul 2026663 AMAQI
15th Jul 2026654 AMAQI

28°C22/36°C

15th Jul 2026625 AMAQI
15th Jul 2026586 AMAQI
15th Jul 2026557 AMAQI
15th Jul 2026508 AMAQI
15th Jul 2026489 AMAQI
15th Jul 20265210 AMAQI
15th Jul 20265411 AMAQI
15th Jul 20264612 PMAQI
15th Jul 2026381 PMAQI
15th Jul 2026362 PMAQI
15th Jul 2026343 PMAQI
15th Jul 2026974 PMAQI
15th Jul 2026345 PMAQI
15th Jul 2026326 PMAQI
15th Jul 2026307 PMAQI
15th Jul 2026318 PMAQI
15th Jul 2026319 PMAQI
15th Jul 20263010 PMAQI
15th Jul 20263311 PMAQI
16th Jul 20263612 AMAQI
16th Jul 2026391 AMAQI
16th Jul 2026442 AMAQI
16th Jul 2026483 AMAQI
16th Jul 2026534 AMAQI

24°C20/29°C

16th Jul 2026565 AMAQI
16th Jul 2026626 AMAQI
16th Jul 2026667 AMAQI
16th Jul 2026778 AMAQI
16th Jul 2026889 AMAQI
16th Jul 20268610 AMAQI
16th Jul 20267011 AMAQI
16th Jul 20267112 PMAQI
16th Jul 2026681 PMAQI
16th Jul 2026732 PMAQI
16th Jul 2026323 PMAQI
16th Jul 2026294 PMAQI
16th Jul 2026305 PMAQI
16th Jul 2026296 PMAQI
16th Jul 2026267 PMAQI
16th Jul 2026298 PMAQI
16th Jul 2026309 PMAQI
16th Jul 20262910 PMAQI
16th Jul 20262811 PMAQI
17th Jul 20262612 AMAQI
17th Jul 2026261 AMAQI
17th Jul 2026252 AMAQI
17th Jul 2026303 AMAQI
17th Jul 2026344 AMAQI

22°C18/29°C

17th Jul 2026405 AMAQI
17th Jul 2026386 AMAQI
17th Jul 2026427 AMAQI
17th Jul 2026408 AMAQI
17th Jul 2026439 AMAQI
17th Jul 20264410 AMAQI
17th Jul 20264011 AMAQI
17th Jul 20263512 PMAQI
17th Jul 2026381 PMAQI
17th Jul 2026482 PMAQI
17th Jul 2026413 PMAQI
17th Jul 2026444 PMAQI
17th Jul 2026415 PMAQI
17th Jul 2026386 PMAQI
17th Jul 2026327 PMAQI
17th Jul 2026328 PMAQI
17th Jul 2026309 PMAQI
17th Jul 20263210 PMAQI
17th Jul 20263111 PMAQI
18th Jul 20262212 AMAQI
18th Jul 2026361 AMAQI
18th Jul 2026592 AMAQI
18th Jul 2026313 AMAQI
18th Jul 2026404 AMAQI

21°C14/29°C

18th Jul 2026425 AMAQI
18th Jul 2026346 AMAQI
18th Jul 2026407 AMAQI
18th Jul 2026448 AMAQI
18th Jul 2026449 AMAQI
18th Jul 20265110 AMAQI
18th Jul 20264311 AMAQI
18th Jul 20264612 PMAQI
18th Jul 2026531 PMAQI
18th Jul 2026582 PMAQI
18th Jul 2026703 PMAQI
18th Jul 2026644 PMAQI
18th Jul 2026665 PMAQI
18th Jul 2026606 PMAQI
18th Jul 2026907 PMAQI
18th Jul 2026408 PMAQI
18th Jul 2026349 PMAQI
18th Jul 20263410 PMAQI
18th Jul 20262811 PMAQI
19th Jul 20263012 AMAQI
19th Jul 2026311 AMAQI
19th Jul 2026402 AMAQI
19th Jul 2026523 AMAQI
19th Jul 2026564 AMAQI

19°C16/24°C

19th Jul 2026505 AMAQI
19th Jul 2026326 AMAQI
19th Jul 2026347 AMAQI
19th Jul 2026368 AMAQI
19th Jul 2026299 AMAQI
19th Jul 20263810 AMAQI
19th Jul 20265011 AMAQI
19th Jul 20263812 PMAQI
19th Jul 2026401 PMAQI
19th Jul 2026402 PMAQI
19th Jul 2026423 PMAQI
19th Jul 2026454 PMAQI
19th Jul 2026415 PMAQI
19th Jul 2026446 PMAQI
19th Jul 2026327 PMAQI
19th Jul 2026278 PMAQI
19th Jul 2026269 PMAQI
19th Jul 20263310 PMAQI
19th Jul 20263411 PMAQI
20th Jul 20263612 AMAQI
20th Jul 2026401 AMAQI
20th Jul 2026612 AMAQI
20th Jul 2026363 AMAQI
20th Jul 2026424 AMAQI

18°C13/25°C

20th Jul 2026345 AMAQI
20th Jul 2026346 AMAQI
20th Jul 2026267 AMAQI
20th Jul 2026258 AMAQI
20th Jul 2026309 AMAQI
20th Jul 20262510 AMAQI
20th Jul 20262711 AMAQI
20th Jul 20262812 PMAQI
20th Jul 2026231 PMAQI
20th Jul 2026222 PMAQI
20th Jul 2026233 PMAQI
20th Jul 2026264 PMAQI
20th Jul 2026255 PMAQI
20th Jul 2026266 PMAQI
20th Jul 2026287 PMAQI
20th Jul 2026278 PMAQI
20th Jul 2026429 PMAQI
20th Jul 20264710 PMAQI
21st Jul 20264812 AMAQI
21st Jul 2026461 AMAQI
21st Jul 2026412 AMAQI
21st Jul 2026383 AMAQI
21st Jul 2026314 AMAQI

20°C14/29°C

21st Jul 2026525 AMAQI
21st Jul 2026366 AMAQI
21st Jul 2026527 AMAQI
21st Jul 2026288 AMAQI
21st Jul 2026539 AMAQI
21st Jul 20264010 AMAQI
21st Jul 20264611 AMAQI
21st Jul 20265512 PMAQI
21st Jul 2026621 PMAQI
21st Jul 2026632 PMAQI
21st Jul 2026643 PMAQI
21st Jul 2026644 PMAQI
21st Jul 2026685 PMAQI
21st Jul 2026516 PMAQI
21st Jul 2026347 PMAQI
21st Jul 2026248 PMAQI
21st Jul 2026259 PMAQI
21st Jul 20262210 PMAQI
21st Jul 20262511 PMAQI
22nd Jul 20262712 AMAQI
22nd Jul 2026301 AMAQI
22nd Jul 2026262 AMAQI
22nd Jul 2026223 AMAQI
22nd Jul 2026284 AMAQI

21°C18/25°C

22nd Jul 2026275 AMAQI
22nd Jul 2026276 AMAQI
22nd Jul 2026297 AMAQI
22nd Jul 2026268 AMAQI
22nd Jul 2026269 AMAQI
22nd Jul 20262710 AMAQI
22nd Jul 20262611 AMAQI
22nd Jul 20262312 PMAQI
22nd Jul 2026241 PMAQI
22nd Jul 2026242 PMAQI
22nd Jul 2026223 PMAQI
22nd Jul 2026224 PMAQI
22nd Jul 2026225 PMAQI
22nd Jul 2026236 PMAQI
22nd Jul 2026267 PMAQI
22nd Jul 2026268 PMAQI
22nd Jul 2026269 PMAQI
22nd Jul 20262310 PMAQI
22nd Jul 20261811 PMAQI
23rd Jul 20262012 AMAQI
23rd Jul 2026241 AMAQI
23rd Jul 2026322 AMAQI
23rd Jul 2026363 AMAQI
23rd Jul 2026204 AMAQI

17°C13/20°C

23rd Jul 2026205 AMAQI
23rd Jul 2026216 AMAQI
23rd Jul 2026227 AMAQI
23rd Jul 2026368 AMAQI
23rd Jul 2026299 AMAQI
23rd Jul 20263110 AMAQI
23rd Jul 20262611 AMAQI
23rd Jul 20262412 PMAQI
23rd Jul 2026231 PMAQI
23rd Jul 2026222 PMAQI
23rd Jul 2026243 PMAQI
23rd Jul 2026244 PMAQI
23rd Jul 2026425 PMAQI
23rd Jul 2026526 PMAQI
23rd Jul 2026507 PMAQI
23rd Jul 2026518 PMAQI
23rd Jul 2026409 PMAQI
23rd Jul 20262410 PMAQI
23rd Jul 20262511 PMAQI
24th Jul 20262512 AMAQI
24th Jul 2026241 AMAQI
24th Jul 2026252 AMAQI
24th Jul 2026263 AMAQI
24th Jul 2026264 AMAQI

18°C11/27°C

24th Jul 2026255 AMAQI
24th Jul 2026256 AMAQI
24th Jul 2026267 AMAQI
24th Jul 2026268 AMAQI
24th Jul 2026289 AMAQI
24th Jul 20262810 AMAQI
24th Jul 20262311 AMAQI
24th Jul 20262712 PMAQI
24th Jul 2026341 PMAQI
24th Jul 2026242 PMAQI
24th Jul 2026363 PMAQI
24th Jul 2026254 PMAQI
24th Jul 2026245 PMAQI
24th Jul 2026336 PMAQI
24th Jul 2026297 PMAQI
24th Jul 2026288 PMAQI
24th Jul 2026289 PMAQI
24th Jul 20262810 PMAQI
24th Jul 20262211 PMAQI
25th Jul 20262812 AMAQI
25th Jul 2026301 AMAQI
25th Jul 2026282 AMAQI
25th Jul 2026363 AMAQI
25th Jul 2026274 AMAQI

21°C14/30°C

25th Jul 2026285 AMAQI
25th Jul 2026286 AMAQI
25th Jul 2026307 AMAQI
25th Jul 2026308 AMAQI
25th Jul 2026289 AMAQI
25th Jul 20262310 AMAQI
25th Jul 20262311 AMAQI
25th Jul 20262312 PMAQI
25th Jul 2026221 PMAQI
25th Jul 2026242 PMAQI
25th Jul 2026283 PMAQI
25th Jul 2026254 PMAQI
25th Jul 2026265 PMAQI
25th Jul 2026216 PMAQI
25th Jul 2026227 PMAQI
25th Jul 2026228 PMAQI
25th Jul 2026219 PMAQI
25th Jul 20262810 PMAQI
25th Jul 20263111 PMAQI
26th Jul 20263912 AMAQI
26th Jul 2026401 AMAQI
26th Jul 2026402 AMAQI
26th Jul 2026403 AMAQI
26th Jul 2026384 AMAQI

22°C13/31°C

26th Jul 2026375 AMAQI
26th Jul 2026386 AMAQI
26th Jul 2026377 AMAQI
26th Jul 2026368 AMAQI
26th Jul 2026399 AMAQI
26th Jul 20264110 AMAQI
26th Jul 20263811 AMAQI
26th Jul 20263812 PMAQI
26th Jul 2026381 PMAQI
26th Jul 2026282 PMAQI
26th Jul 2026263 PMAQI
26th Jul 2026264 PMAQI
26th Jul 2026265 PMAQI
26th Jul 2026246 PMAQI
26th Jul 2026267 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026249 PMAQI
26th Jul 20262610 PMAQI
26th Jul 20262711 PMAQI
27th Jul 20264012 AMAQI
27th Jul 2026411 AMAQI
27th Jul 2026462 AMAQI
27th Jul 2026473 AMAQI
27th Jul 2026464 AMAQI

23°C16/29°C

27th Jul 2026455 AMAQI
27th Jul 2026476 AMAQI
27th Jul 2026437 AMAQI
27th Jul 2026448 AMAQI
27th Jul 2026449 AMAQI
27th Jul 20264610 AMAQI
27th Jul 20264911 AMAQI
27th Jul 20264612 PMAQI
27th Jul 2026501 PMAQI
27th Jul 2026482 PMAQI
27th Jul 2026463 PMAQI
27th Jul 2026444 PMAQI
27th Jul 2026445 PMAQI
27th Jul 2026426 PMAQI
27th Jul 2026427 PMAQI
27th Jul 2026438 PMAQI
27th Jul 2026449 PMAQI
27th Jul 20264410 PMAQI
27th Jul 20264211 PMAQI
28th Jul 20264212 AMAQI
28th Jul 2026421 AMAQI
28th Jul 2026432 AMAQI
28th Jul 2026443 AMAQI
28th Jul 2026444 AMAQI

25°C18/32°C

28th Jul 2026475 AMAQI
28th Jul 2026466 AMAQI
28th Jul 2026477 AMAQI
28th Jul 2026468 AMAQI
28th Jul 2026439 AMAQI
28th Jul 20264010 AMAQI
28th Jul 20263611 AMAQI
28th Jul 20263612 PMAQI
28th Jul 2026401 PMAQI
28th Jul 2026402 PMAQI
28th Jul 2026383 PMAQI
28th Jul 2026374 PMAQI
28th Jul 2026345 PMAQI
28th Jul 2026326 PMAQI
28th Jul 2026327 PMAQI
28th Jul 2026328 PMAQI
28th Jul 2026319 PMAQI
28th Jul 20263210 PMAQI
28th Jul 20263411 PMAQI
29th Jul 20263312 AMAQI
29th Jul 2026381 AMAQI
29th Jul 2026422 AMAQI
29th Jul 2026463 AMAQI
29th Jul 2026394 AMAQI

21°C19/22°C

29th Jul 2026505 AMAQI
29th Jul 2026506 AMAQI
29th Jul 2026467 AMAQI
29th Jul 2026448 AMAQI
29th Jul 2026419 AMAQI
29th Jul 20263610 AMAQI
29th Jul 20262611 AMAQI
29th Jul 20262812 PMAQI
29th Jul 2026281 PMAQI
29th Jul 2026282 PMAQI
29th Jul 2026323 PMAQI
29th Jul 2026234 PMAQI
29th Jul 2026245 PMAQI
29th Jul 2026286 PMAQI
29th Jul 2026277 PMAQI
29th Jul 2026258 PMAQI
29th Jul 2026249 PMAQI
29th Jul 20262810 PMAQI
29th Jul 20262911 PMAQI
30th Jul 20263012 AMAQI
30th Jul 2026381 AMAQI
30th Jul 2026302 AMAQI
30th Jul 2026303 AMAQI
30th Jul 2026464 AMAQI

21°C20/22°C

30th Jul 2026345 AMAQI
5 AM
30th Jul 2026326 AMAQI
30th Jul 2026267 AMAQI
30th Jul 2026308 AMAQI
30th Jul 2026349 AMAQI
30th Jul 20263310 AMAQI
30th Jul 20262811 AMAQI
30th Jul 20262712 PMAQI
12 PM
30th Jul 2026341 PMAQI
30th Jul 2026342 PMAQI
30th Jul 2026343 PMAQI
30th Jul 2026254 PMAQI
30th Jul 2026305 PMAQI
30th Jul 2026256 PMAQI
30th Jul 2026297 PMAQI
30th Jul 2026298 PMAQI
8 PM
30th Jul 2026299 PMAQI
30th Jul 20262810 PMAQI
30th Jul 20262911 PMAQI
12 AM
4 AM

23°C18/29°C

Day time
Avg. Highest Time
5 AM - 2 PM

37AQI

10 hours / Day
300 hours / Month
Avg. Lowest Time
8 PM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 2 PM (Avg. 37), while the lowest AQI was between 8 PM to 8 PM (Avg. 33).
Night time
Avg. Highest Time
1 AM - 4 AM

37AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
11 PM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 4 AM (Avg. 37), while the lowest AQI was between 11 PM to 11 PM (Avg. 33).

2026 Days Vs Air Quality

Ottawa, Ontario, Canada

2026

94%

194

6%

13

Total number of days with different AQI categories in last 211 days in 2026 (154 days remaining)

Good
194 Days
Moderate
13 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 94%

Health Risk Level:

Very Low

In 2026, 94% of 211 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.

Annual Air Quality Insights

Ottawa, Ontario, Canada

AQI levels in 2026

AQI (US)
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 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
19AQI (US)
2nd January 2026
45AQI (US)
3rd January 2026
18AQI (US)
4th January 2026
28AQI (US)
5th January 2026
39AQI (US)
6th January 2026
54AQI (US)
7th January 2026
56AQI (US)
8th January 2026
45AQI (US)
9th January 2026
46AQI (US)
10th January 2026
14AQI (US)
11th January 2026
17AQI (US)
12th January 2026
20AQI (US)
13th January 2026
50AQI (US)
14th January 2026
42AQI (US)
15th January 2026
16AQI (US)
16th January 2026
15AQI (US)
17th January 2026
33AQI (US)
18th January 2026
33AQI (US)
19th January 2026
43AQI (US)
20th January 2026
19AQI (US)
21st January 2026
25AQI (US)
22nd January 2026
49AQI (US)
23rd January 2026
53AQI (US)
24th January 2026
48AQI (US)
25th January 2026
47AQI (US)
26th January 2026
47AQI (US)
27th January 2026
44AQI (US)
28th January 2026
48AQI (US)
29th January 2026
52AQI (US)
30th January 2026
51AQI (US)
31st January 2026
45AQI (US)
1st February 2026
47AQI (US)
2nd February 2026
50AQI (US)
3rd February 2026
48AQI (US)
4th February 2026
49AQI (US)
5th February 2026
48AQI (US)
6th February 2026
40AQI (US)
7th February 2026
38AQI (US)
8th February 2026
46AQI (US)
9th February 2026
47AQI (US)
10th February 2026
44AQI (US)
11th February 2026
41AQI (US)
12th February 2026
40AQI (US)
13th February 2026
48AQI (US)
14th February 2026
48AQI (US)
15th February 2026
38AQI (US)
16th February 2026
43AQI (US)
17th February 2026
44AQI (US)
18th February 2026
42AQI (US)
19th February 2026
40AQI (US)
20th February 2026
39AQI (US)
21st February 2026
35AQI (US)
22nd February 2026
36AQI (US)
23rd February 2026
40AQI (US)
24th February 2026
46AQI (US)
25th February 2026
42AQI (US)
26th February 2026
36AQI (US)
27th February 2026
36AQI (US)
28th February 2026
39AQI (US)
1st March 2026
39AQI (US)
2nd March 2026
55AQI (US)
3rd March 2026
47AQI (US)
4th March 2026
45AQI (US)
5th March 2026
41AQI (US)
6th March 2026
38AQI (US)
7th March 2026
40AQI (US)
8th March 2026
40AQI (US)
9th March 2026
41AQI (US)
10th March 2026
34AQI (US)
11th March 2026
44AQI (US)
12th March 2026
42AQI (US)
13th March 2026
40AQI (US)
14th March 2026
37AQI (US)
15th March 2026
35AQI (US)
16th March 2026
36AQI (US)
17th March 2026
33AQI (US)
18th March 2026
31AQI (US)
19th March 2026
32AQI (US)
20th March 2026
36AQI (US)
21st March 2026
37AQI (US)
22nd March 2026
36AQI (US)
23rd March 2026
41AQI (US)
24th March 2026
36AQI (US)
25th March 2026
32AQI (US)
26th March 2026
27AQI (US)
27th March 2026
28AQI (US)
28th March 2026
32AQI (US)
29th March 2026
30AQI (US)
30th March 2026
26AQI (US)
31st March 2026
25AQI (US)
1st April 2026
30AQI (US)
2nd April 2026
31AQI (US)
3rd April 2026
27AQI (US)
4th April 2026
32AQI (US)
5th April 2026
29AQI (US)
6th April 2026
28AQI (US)
7th April 2026
26AQI (US)
8th April 2026
31AQI (US)
9th April 2026
28AQI (US)
10th April 2026
30AQI (US)
11th April 2026
32AQI (US)
12th April 2026
26AQI (US)
13th April 2026
33AQI (US)
14th April 2026
32AQI (US)
15th April 2026
32AQI (US)
16th April 2026
30AQI (US)
17th April 2026
18th April 2026
29AQI (US)
19th April 2026
33AQI (US)
20th April 2026
29AQI (US)
21st April 2026
27AQI (US)
22nd April 2026
23rd April 2026
23AQI (US)
24th April 2026
25AQI (US)
25th April 2026
28AQI (US)
26th April 2026
32AQI (US)
27th April 2026
27AQI (US)
28th April 2026
24AQI (US)
29th April 2026
23AQI (US)
30th April 2026
26AQI (US)
1st May 2026
26AQI (US)
2nd May 2026
24AQI (US)
3rd May 2026
20AQI (US)
4th May 2026
31AQI (US)
5th May 2026
33AQI (US)
6th May 2026
30AQI (US)
7th May 2026
28AQI (US)
8th May 2026
28AQI (US)
9th May 2026
10th May 2026
33AQI (US)
11th May 2026
29AQI (US)
12th May 2026
25AQI (US)
13th May 2026
28AQI (US)
14th May 2026
23AQI (US)
15th May 2026
46AQI (US)
16th May 2026
53AQI (US)
17th May 2026
56AQI (US)
18th May 2026
58AQI (US)
19th May 2026
55AQI (US)
20th May 2026
50AQI (US)
21st May 2026
44AQI (US)
22nd May 2026
44AQI (US)
23rd May 2026
50AQI (US)
24th May 2026
48AQI (US)
25th May 2026
45AQI (US)
26th May 2026
28AQI (US)
27th May 2026
26AQI (US)
28th May 2026
19AQI (US)
29th May 2026
19AQI (US)
30th May 2026
20AQI (US)
31st May 2026
27AQI (US)
1st June 2026
28AQI (US)
2nd June 2026
25AQI (US)
3rd June 2026
23AQI (US)
4th June 2026
25AQI (US)
5th June 2026
28AQI (US)
6th June 2026
25AQI (US)
7th June 2026
21AQI (US)
8th June 2026
25AQI (US)
9th June 2026
24AQI (US)
10th June 2026
27AQI (US)
11th June 2026
26AQI (US)
12th June 2026
27AQI (US)
13th June 2026
23AQI (US)
14th June 2026
23AQI (US)
15th June 2026
24AQI (US)
16th June 2026
26AQI (US)
17th June 2026
27AQI (US)
18th June 2026
26AQI (US)
19th June 2026
24AQI (US)
20th June 2026
24AQI (US)
21st June 2026
21AQI (US)
22nd June 2026
24AQI (US)
23rd June 2026
24AQI (US)
24th June 2026
23AQI (US)
25th June 2026
26AQI (US)
26th June 2026
27AQI (US)
27th June 2026
29AQI (US)
28th June 2026
27AQI (US)
29th June 2026
25AQI (US)
30th June 2026
26AQI (US)
1st July 2026
27AQI (US)
2nd July 2026
27AQI (US)
3rd July 2026
28AQI (US)
4th July 2026
25AQI (US)
5th July 2026
27AQI (US)
6th July 2026
28AQI (US)
7th July 2026
30AQI (US)
8th July 2026
27AQI (US)
9th July 2026
29AQI (US)
10th July 2026
39AQI (US)
11th July 2026
52AQI (US)
12th July 2026
69AQI (US)
13th July 2026
52AQI (US)
14th July 2026
44AQI (US)
15th July 2026
50AQI (US)
16th July 2026
50AQI (US)
17th July 2026
36AQI (US)
18th July 2026
47AQI (US)
19th July 2026
38AQI (US)
20th July 2026
32AQI (US)
21st July 2026
44AQI (US)
22nd July 2026
25AQI (US)
23rd July 2026
30AQI (US)
24th July 2026
27AQI (US)
25th July 2026
26AQI (US)
26th July 2026
33AQI (US)
27th July 2026
44AQI (US)
28th July 2026
39AQI (US)
29th July 2026
34AQI (US)
30th July 2026
31st July 2026
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

37AQI (US)

43AQI (US)

37AQI (US)

29AQI (US)

35AQI (US)

25AQI (US)

37AQI (US)

No. of days

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

202635AQI (US)

26
5
28
30
1
28
26
4
30
26
3
194
13

Highest AQI (US) recorded in

February

43AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202530AQI (US)

28
3
26
2
29
2
30
31
25
5
25
6
24
7
30
28
3
27
3
24
7
327
38

Highest AQI (US) recorded in

July

39AQI (US)

Lowest AQI (US) recorded in

May

19AQI (US)

202429AQI (US)

30
1
22
7
30
1
30
31
27
2
28
3
21
10
30
31
30
28
3
338
27

Highest AQI (US) recorded in

February

36AQI (US)

Lowest AQI (US) recorded in

November

23AQI (US)

202337AQI (US)

30
1
22
6
29
2
30
30
1
14
9
2
5
19
11
1
25
6
23
7
29
2
27
2
25
6
303
53
3
5

Highest AQI (US) recorded in

June

74AQI (US)

Lowest AQI (US) recorded in

November

28AQI (US)

202230AQI (US)

23
8
20
2
30
1
30
30
1
30
24
2
29
30
1
29
1
30
1
307
15

Highest AQI (US) recorded in

January

40AQI (US)

Lowest AQI (US) recorded in

September

21AQI (US)

202130AQI (US)

23
6
25
3
26
5
30
31
30
25
6
25
6
30
31
29
1
28
3
333
30

Highest AQI (US) recorded in

August

37AQI (US)

Lowest AQI (US) recorded in

September

20AQI (US)

202026AQI (US)

13
21
18
30
31
31
30
31
24
6
28
3
257
9

Highest AQI (US) recorded in

November

36AQI (US)

Lowest AQI (US) recorded in

October

21AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2023(Avg.)
37AQI (US)
Least Polluted Year Recorded
2020(Avg.)
26AQI (US)

Ottawa's annual 2026 AQI (US) (35) shows an average percentage change of 16.6% (worsened AQI (US)) compared to previous years: 2020 (26), 2021 (30), 2022 (30), 2023 (37), 2024 (29), 2025 (30).