Country Background

Toronto Downtown, Toronto, 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

Toronto Downtown, Toronto, Ontario, Canada

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
4th Aug 2025
110AQI
Lowest AQI recorded on
7th Aug 2024
17AQI


Same Day Analysis (30th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 22 of Good air quality, showing improvement over 2023 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 30th Aug - 31st Aug 2025

Toronto Downtown, Toronto, Ontario, Canada

AQI
Day
Night
.

6 AM30th Aug 2025

8 PM

5 AM31st Aug 2025

Day time
Avg. Highest Time
6AM30th Aug

23AQI

Avg. Lowest Time
4PM30th Aug

16AQI

Night time
Avg. Highest Time
12AM31st Aug

26AQI

Avg. Lowest Time
8PM30th Aug

18AQI

In the last 24 hours,

Toronto Downtown's AQI reached its highest point of 26 at 12 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 30th Aug and 31st Aug 2025.

Day & Night AQI Trend : Aug 2025

Toronto Downtown, Toronto, Ontario, Canada

Aug
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 - 31st31st
Day
Night
1st Aug 2025656 AMAQI
1st Aug 2025597 AMAQI
1st Aug 2025548 AMAQI
1st Aug 2025489 AMAQI
1st Aug 20254610 AMAQI
1st Aug 20254011 AMAQI
1st Aug 20253212 PMAQI
1st Aug 2025251 PMAQI
1st Aug 2025262 PMAQI
1st Aug 2025273 PMAQI
1st Aug 2025244 PMAQI
1st Aug 2025245 PMAQI
1st Aug 2025226 PMAQI
1st Aug 2025237 PMAQI
1st Aug 2025238 PMAQI
1st Aug 2025469 PMAQI
1st Aug 20253910 PMAQI
1st Aug 20252511 PMAQI
2nd Aug 20252412 AMAQI
2nd Aug 2025301 AMAQI
2nd Aug 2025322 AMAQI
2nd Aug 2025373 AMAQI
2nd Aug 2025324 AMAQI
2nd Aug 2025265 AMAQI

22°C18/27°C

2nd Aug 2025266 AMAQI
2nd Aug 2025247 AMAQI
2nd Aug 2025268 AMAQI
2nd Aug 2025279 AMAQI
2nd Aug 20253310 AMAQI
2nd Aug 20253411 AMAQI
2nd Aug 20253912 PMAQI
2nd Aug 2025401 PMAQI
2nd Aug 2025342 PMAQI
2nd Aug 2025403 PMAQI
2nd Aug 2025484 PMAQI
2nd Aug 2025495 PMAQI
2nd Aug 2025506 PMAQI
2nd Aug 2025547 PMAQI
2nd Aug 2025578 PMAQI
2nd Aug 2025389 PMAQI
2nd Aug 20254710 PMAQI
2nd Aug 20257811 PMAQI
3rd Aug 20258212 AMAQI
3rd Aug 2025871 AMAQI
3rd Aug 2025882 AMAQI
3rd Aug 2025903 AMAQI
3rd Aug 2025894 AMAQI
3rd Aug 2025865 AMAQI

23°C16/29°C

3rd Aug 2025946 AMAQI
3rd Aug 20251027 AMAQI
3rd Aug 20251128 AMAQI
3rd Aug 20251019 AMAQI
3rd Aug 202510410 AMAQI
3rd Aug 202510211 AMAQI
3rd Aug 20258912 PMAQI
3rd Aug 2025841 PMAQI
3rd Aug 2025852 PMAQI
3rd Aug 2025793 PMAQI
3rd Aug 2025874 PMAQI
3rd Aug 2025965 PMAQI
3rd Aug 2025846 PMAQI
3rd Aug 2025877 PMAQI
3rd Aug 2025808 PMAQI
3rd Aug 2025929 PMAQI
3rd Aug 202510510 PMAQI
3rd Aug 202511211 PMAQI
4th Aug 202511112 AMAQI
4th Aug 2025871 AMAQI
4th Aug 2025912 AMAQI
4th Aug 2025873 AMAQI
4th Aug 2025964 AMAQI
4th Aug 2025845 AMAQI

25°C19/31°C

4th Aug 2025836 AMAQI
4th Aug 2025827 AMAQI
4th Aug 2025868 AMAQI
4th Aug 20251129 AMAQI
4th Aug 202513010 AMAQI
4th Aug 202513611 AMAQI
4th Aug 202514312 PMAQI
4th Aug 20251401 PMAQI
4th Aug 20251242 PMAQI
4th Aug 20251143 PMAQI
4th Aug 20251124 PMAQI
4th Aug 20251145 PMAQI
4th Aug 20251136 PMAQI
4th Aug 20251107 PMAQI
4th Aug 20251068 PMAQI
4th Aug 20251169 PMAQI
4th Aug 202510810 PMAQI
4th Aug 20259911 PMAQI
5th Aug 20259912 AMAQI
5th Aug 2025961 AMAQI
5th Aug 20251002 AMAQI
5th Aug 20251013 AMAQI
5th Aug 2025984 AMAQI
5th Aug 20251015 AMAQI

25°C19/31°C

5th Aug 2025996 AMAQI
5th Aug 20251097 AMAQI
5th Aug 20251108 AMAQI
5th Aug 20251139 AMAQI
5th Aug 202510810 AMAQI
5th Aug 20259911 AMAQI
5th Aug 20258612 PMAQI
5th Aug 2025791 PMAQI
5th Aug 2025772 PMAQI
5th Aug 2025803 PMAQI
5th Aug 2025894 PMAQI
5th Aug 2025975 PMAQI
5th Aug 20251026 PMAQI
5th Aug 20251017 PMAQI
5th Aug 2025988 PMAQI
5th Aug 2025989 PMAQI
5th Aug 20259310 PMAQI
5th Aug 20258611 PMAQI
6th Aug 20258312 AMAQI
6th Aug 2025731 AMAQI
6th Aug 2025722 AMAQI
6th Aug 2025833 AMAQI
6th Aug 2025824 AMAQI
6th Aug 2025805 AMAQI

24°C21/28°C

6th Aug 2025796 AMAQI
6th Aug 2025747 AMAQI
6th Aug 2025688 AMAQI
6th Aug 2025669 AMAQI
6th Aug 20256710 AMAQI
6th Aug 20256711 AMAQI
6th Aug 20256412 PMAQI
6th Aug 2025651 PMAQI
6th Aug 2025682 PMAQI
6th Aug 2025723 PMAQI
6th Aug 2025784 PMAQI
6th Aug 2025835 PMAQI
6th Aug 2025806 PMAQI
6th Aug 2025787 PMAQI
6th Aug 2025668 PMAQI
6th Aug 2025769 PMAQI
6th Aug 20258210 PMAQI
6th Aug 20258211 PMAQI
7th Aug 20258112 AMAQI
7th Aug 2025771 AMAQI
7th Aug 2025722 AMAQI
7th Aug 2025863 AMAQI
7th Aug 2025854 AMAQI
7th Aug 2025865 AMAQI

24°C21/28°C

7th Aug 2025846 AMAQI
7th Aug 2025767 AMAQI
7th Aug 2025768 AMAQI
7th Aug 2025859 AMAQI
7th Aug 20258610 AMAQI
7th Aug 20258311 AMAQI
7th Aug 20258412 PMAQI
7th Aug 2025861 PMAQI
7th Aug 2025862 PMAQI
7th Aug 2025843 PMAQI
7th Aug 2025844 PMAQI
7th Aug 2025825 PMAQI
7th Aug 2025826 PMAQI
7th Aug 2025827 PMAQI
7th Aug 2025838 PMAQI
7th Aug 2025809 PMAQI
7th Aug 20257910 PMAQI
7th Aug 20258011 PMAQI
8th Aug 20258112 AMAQI
8th Aug 2025841 AMAQI
8th Aug 2025852 AMAQI
8th Aug 2025903 AMAQI
8th Aug 2025904 AMAQI
8th Aug 2025805 AMAQI

25°C21/30°C

8th Aug 2025866 AMAQI
8th Aug 2025957 AMAQI
8th Aug 20251098 AMAQI
8th Aug 2025919 AMAQI
8th Aug 20258910 AMAQI
8th Aug 20258911 AMAQI
8th Aug 20259012 PMAQI
8th Aug 2025881 PMAQI
8th Aug 2025862 PMAQI
8th Aug 2025863 PMAQI
8th Aug 2025854 PMAQI
8th Aug 2025815 PMAQI
8th Aug 2025806 PMAQI
8th Aug 2025787 PMAQI
8th Aug 2025778 PMAQI
8th Aug 2025859 PMAQI
8th Aug 20258510 PMAQI
8th Aug 20258211 PMAQI
9th Aug 20258212 AMAQI
9th Aug 2025801 AMAQI
9th Aug 2025752 AMAQI
9th Aug 2025753 AMAQI
9th Aug 2025744 AMAQI
9th Aug 2025735 AMAQI

25°C21/31°C

9th Aug 2025766 AMAQI
9th Aug 2025767 AMAQI
9th Aug 2025768 AMAQI
9th Aug 2025799 AMAQI
9th Aug 20257710 AMAQI
9th Aug 20257311 AMAQI
9th Aug 20257212 PMAQI
9th Aug 2025721 PMAQI
9th Aug 2025722 PMAQI
9th Aug 2025713 PMAQI
9th Aug 2025694 PMAQI
9th Aug 2025695 PMAQI
9th Aug 2025726 PMAQI
9th Aug 2025717 PMAQI
9th Aug 2025708 PMAQI
9th Aug 2025729 PMAQI
9th Aug 20257110 PMAQI
9th Aug 20257011 PMAQI
10th Aug 20257012 AMAQI
10th Aug 2025651 AMAQI
10th Aug 2025472 AMAQI
10th Aug 2025613 AMAQI
10th Aug 2025654 AMAQI
10th Aug 2025685 AMAQI

26°C22/31°C

10th Aug 2025696 AMAQI
10th Aug 2025707 AMAQI
10th Aug 2025768 AMAQI
10th Aug 2025689 AMAQI
10th Aug 20256710 AMAQI
10th Aug 20256411 AMAQI
10th Aug 20256412 PMAQI
10th Aug 2025631 PMAQI
10th Aug 2025642 PMAQI
10th Aug 2025633 PMAQI
10th Aug 2025644 PMAQI
10th Aug 2025645 PMAQI
10th Aug 2025646 PMAQI
10th Aug 2025637 PMAQI
10th Aug 2025638 PMAQI
10th Aug 2025649 PMAQI
10th Aug 20256410 PMAQI
10th Aug 20256511 PMAQI
11th Aug 20256512 AMAQI
11th Aug 2025701 AMAQI
11th Aug 2025752 AMAQI
11th Aug 2025653 AMAQI
11th Aug 2025584 AMAQI
11th Aug 2025585 AMAQI

28°C23/34°C

11th Aug 2025576 AMAQI
11th Aug 2025607 AMAQI
11th Aug 2025608 AMAQI
11th Aug 2025649 AMAQI
11th Aug 20256510 AMAQI
11th Aug 20256311 AMAQI
11th Aug 20256212 PMAQI
11th Aug 2025611 PMAQI
11th Aug 2025612 PMAQI
11th Aug 2025603 PMAQI
11th Aug 2025604 PMAQI
11th Aug 2025625 PMAQI
11th Aug 2025626 PMAQI
11th Aug 2025637 PMAQI
11th Aug 2025628 PMAQI
11th Aug 2025629 PMAQI
11th Aug 20256010 PMAQI
11th Aug 20255811 PMAQI
12th Aug 20255712 AMAQI
12th Aug 2025551 AMAQI
12th Aug 2025562 AMAQI
12th Aug 2025603 AMAQI
12th Aug 2025604 AMAQI
12th Aug 2025625 AMAQI

28°C23/33°C

12th Aug 2025646 AMAQI
12th Aug 2025607 AMAQI
12th Aug 2025608 AMAQI
12th Aug 2025629 AMAQI
12th Aug 20256810 AMAQI
12th Aug 20256011 AMAQI
12th Aug 20255712 PMAQI
12th Aug 2025571 PMAQI
12th Aug 2025572 PMAQI
12th Aug 2025573 PMAQI
12th Aug 2025584 PMAQI
12th Aug 2025575 PMAQI
12th Aug 2025586 PMAQI
12th Aug 2025567 PMAQI
12th Aug 2025558 PMAQI
12th Aug 2025589 PMAQI
12th Aug 20255510 PMAQI
12th Aug 20254611 PMAQI
13th Aug 20254312 AMAQI
13th Aug 2025441 AMAQI
13th Aug 2025442 AMAQI
13th Aug 2025483 AMAQI
13th Aug 2025464 AMAQI
13th Aug 2025405 AMAQI

28°C24/33°C

13th Aug 2025366 AMAQI
13th Aug 2025337 AMAQI
13th Aug 2025338 AMAQI
13th Aug 2025349 AMAQI
13th Aug 20253610 AMAQI
13th Aug 20253611 AMAQI
13th Aug 20253612 PMAQI
13th Aug 2025421 PMAQI
13th Aug 2025452 PMAQI
13th Aug 2025493 PMAQI
13th Aug 2025534 PMAQI
13th Aug 2025555 PMAQI
13th Aug 2025586 PMAQI
13th Aug 2025607 PMAQI
13th Aug 2025608 PMAQI
13th Aug 2025439 PMAQI
13th Aug 20254810 PMAQI
13th Aug 20255511 PMAQI
14th Aug 20255712 AMAQI
14th Aug 2025611 AMAQI
14th Aug 2025622 AMAQI
14th Aug 2025603 AMAQI
14th Aug 2025564 AMAQI
14th Aug 2025585 AMAQI

27°C22/31°C

14th Aug 2025586 AMAQI
14th Aug 2025607 AMAQI
14th Aug 2025648 AMAQI
14th Aug 2025689 AMAQI
14th Aug 20257110 AMAQI
14th Aug 20256011 AMAQI
14th Aug 20254812 PMAQI
14th Aug 2025551 PMAQI
14th Aug 2025622 PMAQI
14th Aug 2025613 PMAQI
14th Aug 2025584 PMAQI
14th Aug 2025645 PMAQI
14th Aug 2025626 PMAQI
14th Aug 2025667 PMAQI
14th Aug 2025618 PMAQI
14th Aug 2025699 PMAQI
14th Aug 20256610 PMAQI
14th Aug 20256711 PMAQI
15th Aug 20257312 AMAQI
15th Aug 2025651 AMAQI
15th Aug 2025642 AMAQI
15th Aug 2025663 AMAQI
15th Aug 2025654 AMAQI
15th Aug 2025645 AMAQI

25°C19/31°C

15th Aug 2025636 AMAQI
15th Aug 2025637 AMAQI
15th Aug 2025668 AMAQI
15th Aug 2025719 AMAQI
15th Aug 20256610 AMAQI
15th Aug 20256411 AMAQI
15th Aug 20255612 PMAQI
15th Aug 2025471 PMAQI
15th Aug 2025462 PMAQI
15th Aug 2025423 PMAQI
15th Aug 2025464 PMAQI
15th Aug 2025545 PMAQI
15th Aug 2025576 PMAQI
15th Aug 2025587 PMAQI
15th Aug 2025588 PMAQI
15th Aug 2025699 PMAQI
15th Aug 20256010 PMAQI
15th Aug 20255611 PMAQI
16th Aug 20255812 AMAQI
16th Aug 2025561 AMAQI
16th Aug 2025572 AMAQI
16th Aug 2025573 AMAQI
16th Aug 2025574 AMAQI
16th Aug 2025565 AMAQI

26°C22/30°C

16th Aug 2025576 AMAQI
16th Aug 2025587 AMAQI
16th Aug 2025588 AMAQI
16th Aug 2025639 AMAQI
16th Aug 20255810 AMAQI
16th Aug 20256011 AMAQI
16th Aug 20256212 PMAQI
16th Aug 2025631 PMAQI
16th Aug 2025642 PMAQI
16th Aug 2025633 PMAQI
16th Aug 2025624 PMAQI
16th Aug 2025625 PMAQI
16th Aug 2025626 PMAQI
16th Aug 2025647 PMAQI
16th Aug 2025618 PMAQI
16th Aug 2025629 PMAQI
16th Aug 20256110 PMAQI
16th Aug 20256411 PMAQI
17th Aug 20256212 AMAQI
17th Aug 2025591 AMAQI
17th Aug 2025602 AMAQI
17th Aug 2025593 AMAQI
17th Aug 2025594 AMAQI
17th Aug 2025585 AMAQI

27°C22/33°C

17th Aug 2025546 AMAQI
17th Aug 2025507 AMAQI
17th Aug 2025428 AMAQI
17th Aug 2025349 AMAQI
17th Aug 20253010 AMAQI
17th Aug 20252811 AMAQI
17th Aug 20252812 PMAQI
17th Aug 2025281 PMAQI
17th Aug 2025322 PMAQI
17th Aug 2025313 PMAQI
17th Aug 2025294 PMAQI
17th Aug 2025285 PMAQI
17th Aug 2025246 PMAQI
17th Aug 2025207 PMAQI
17th Aug 2025158 PMAQI
17th Aug 2025359 PMAQI
17th Aug 20252610 PMAQI
17th Aug 20251911 PMAQI
18th Aug 20252012 AMAQI
18th Aug 2025161 AMAQI
18th Aug 2025162 AMAQI
18th Aug 2025143 AMAQI
18th Aug 2025144 AMAQI
18th Aug 2025145 AMAQI

24°C20/26°C

18th Aug 2025146 AMAQI
18th Aug 2025147 AMAQI
18th Aug 2025158 AMAQI
18th Aug 2025169 AMAQI
18th Aug 20251710 AMAQI
18th Aug 20251811 AMAQI
18th Aug 20251812 PMAQI
18th Aug 2025181 PMAQI
18th Aug 2025162 PMAQI
18th Aug 2025163 PMAQI
18th Aug 2025164 PMAQI
18th Aug 2025165 PMAQI
18th Aug 2025186 PMAQI
18th Aug 2025207 PMAQI
18th Aug 2025198 PMAQI
18th Aug 2025189 PMAQI
18th Aug 20251810 PMAQI
18th Aug 20251811 PMAQI
19th Aug 20251812 AMAQI
19th Aug 2025201 AMAQI
19th Aug 2025202 AMAQI
19th Aug 2025223 AMAQI
19th Aug 2025194 AMAQI
19th Aug 2025195 AMAQI

20°C15/24°C

19th Aug 2025206 AMAQI
19th Aug 2025207 AMAQI
19th Aug 2025188 AMAQI
19th Aug 2025209 AMAQI
19th Aug 20252210 AMAQI
19th Aug 20252311 AMAQI
19th Aug 20252112 PMAQI
19th Aug 2025221 PMAQI
19th Aug 2025232 PMAQI
19th Aug 2025283 PMAQI
19th Aug 2025274 PMAQI
19th Aug 2025255 PMAQI
19th Aug 2025286 PMAQI
19th Aug 2025317 PMAQI
19th Aug 2025298 PMAQI
19th Aug 2025219 PMAQI
19th Aug 20252610 PMAQI
19th Aug 20253111 PMAQI
20th Aug 20252812 AMAQI
20th Aug 2025261 AMAQI
20th Aug 2025232 AMAQI
20th Aug 2025223 AMAQI
20th Aug 2025204 AMAQI
20th Aug 2025195 AMAQI

21°C19/24°C

20th Aug 2025186 AMAQI
20th Aug 2025217 AMAQI
20th Aug 2025198 AMAQI
20th Aug 2025189 AMAQI
20th Aug 20251710 AMAQI
20th Aug 20251911 AMAQI
20th Aug 20251812 PMAQI
20th Aug 2025181 PMAQI
20th Aug 2025162 PMAQI
20th Aug 2025183 PMAQI
20th Aug 2025164 PMAQI
20th Aug 2025165 PMAQI
20th Aug 2025166 PMAQI
20th Aug 2025187 PMAQI
20th Aug 2025178 PMAQI
20th Aug 2025189 PMAQI
20th Aug 20251810 PMAQI
20th Aug 20251811 PMAQI
21st Aug 20251812 AMAQI
21st Aug 2025201 AMAQI
21st Aug 2025202 AMAQI
21st Aug 2025183 AMAQI
21st Aug 2025184 AMAQI
21st Aug 2025185 AMAQI

20°C18/22°C

21st Aug 2025186 AMAQI
21st Aug 2025187 AMAQI
21st Aug 2025178 AMAQI
21st Aug 2025179 AMAQI
21st Aug 20251710 AMAQI
21st Aug 20251811 AMAQI
21st Aug 20252012 PMAQI
21st Aug 2025221 PMAQI
21st Aug 2025242 PMAQI
21st Aug 2025263 PMAQI
21st Aug 2025214 PMAQI
21st Aug 2025175 PMAQI
21st Aug 2025196 PMAQI
21st Aug 2025197 PMAQI
21st Aug 2025208 PMAQI
21st Aug 2025219 PMAQI
21st Aug 20252010 PMAQI
21st Aug 20252011 PMAQI
22nd Aug 20252012 AMAQI
22nd Aug 2025221 AMAQI
22nd Aug 2025212 AMAQI
22nd Aug 2025243 AMAQI
22nd Aug 2025244 AMAQI
22nd Aug 2025245 AMAQI

21°C17/26°C

22nd Aug 2025246 AMAQI
22nd Aug 2025247 AMAQI
22nd Aug 2025248 AMAQI
22nd Aug 2025269 AMAQI
22nd Aug 20253410 AMAQI
22nd Aug 20253811 AMAQI
22nd Aug 20253612 PMAQI
22nd Aug 2025301 PMAQI
22nd Aug 2025282 PMAQI
22nd Aug 2025283 PMAQI
22nd Aug 2025284 PMAQI
22nd Aug 2025285 PMAQI
22nd Aug 2025286 PMAQI
22nd Aug 2025277 PMAQI
22nd Aug 2025268 PMAQI
22nd Aug 2025319 PMAQI
22nd Aug 20253110 PMAQI
22nd Aug 20253311 PMAQI
23rd Aug 20253412 AMAQI
23rd Aug 2025351 AMAQI
23rd Aug 2025352 AMAQI
23rd Aug 2025363 AMAQI
23rd Aug 2025364 AMAQI
23rd Aug 2025355 AMAQI

23°C17/29°C

23rd Aug 2025366 AMAQI
23rd Aug 2025367 AMAQI
23rd Aug 2025348 AMAQI
23rd Aug 2025339 AMAQI
23rd Aug 20253210 AMAQI
23rd Aug 20253111 AMAQI
23rd Aug 20252812 PMAQI
23rd Aug 2025261 PMAQI
23rd Aug 2025282 PMAQI
23rd Aug 2025293 PMAQI
23rd Aug 2025324 PMAQI
23rd Aug 2025335 PMAQI
23rd Aug 2025366 PMAQI
23rd Aug 2025367 PMAQI
23rd Aug 2025378 PMAQI
23rd Aug 2025359 PMAQI
23rd Aug 20253710 PMAQI
23rd Aug 20253911 PMAQI
24th Aug 20253812 AMAQI
24th Aug 2025401 AMAQI
24th Aug 2025412 AMAQI
24th Aug 2025383 AMAQI
24th Aug 2025384 AMAQI
24th Aug 2025385 AMAQI

23°C19/27°C

24th Aug 2025366 AMAQI
24th Aug 2025367 AMAQI
24th Aug 2025328 AMAQI
24th Aug 2025349 AMAQI
24th Aug 20253210 AMAQI
24th Aug 20253211 AMAQI
24th Aug 20253412 PMAQI
24th Aug 2025311 PMAQI
24th Aug 2025322 PMAQI
24th Aug 2025323 PMAQI
24th Aug 2025324 PMAQI
24th Aug 2025335 PMAQI
24th Aug 2025326 PMAQI
24th Aug 2025327 PMAQI
24th Aug 2025308 PMAQI
24th Aug 2025349 PMAQI
24th Aug 20253310 PMAQI
24th Aug 20252811 PMAQI
25th Aug 20252812 AMAQI
25th Aug 2025281 AMAQI
25th Aug 2025282 AMAQI
25th Aug 2025283 AMAQI
25th Aug 2025284 AMAQI
25th Aug 2025265 AMAQI

22°C19/24°C

25th Aug 2025266 AMAQI
25th Aug 2025267 AMAQI
25th Aug 2025268 AMAQI
25th Aug 2025249 AMAQI
25th Aug 20252810 AMAQI
25th Aug 20252611 AMAQI
25th Aug 20252112 PMAQI
25th Aug 2025181 PMAQI
25th Aug 2025202 PMAQI
25th Aug 2025183 PMAQI
25th Aug 2025174 PMAQI
25th Aug 2025165 PMAQI
25th Aug 2025146 PMAQI
25th Aug 2025167 PMAQI
25th Aug 2025178 PMAQI
25th Aug 2025209 PMAQI
25th Aug 20251810 PMAQI
25th Aug 20251711 PMAQI
26th Aug 20251712 AMAQI
26th Aug 2025181 AMAQI
26th Aug 2025242 AMAQI
26th Aug 2025183 AMAQI
26th Aug 2025184 AMAQI
26th Aug 2025205 AMAQI

19°C15/21°C

26th Aug 2025216 AMAQI
26th Aug 2025207 AMAQI
26th Aug 2025268 AMAQI
26th Aug 2025269 AMAQI
26th Aug 20252610 AMAQI
26th Aug 20252611 AMAQI
26th Aug 20252512 PMAQI
26th Aug 2025231 PMAQI
26th Aug 2025242 PMAQI
26th Aug 2025203 PMAQI
26th Aug 2025214 PMAQI
26th Aug 2025215 PMAQI
26th Aug 2025186 PMAQI
26th Aug 2025167 PMAQI
26th Aug 2025158 PMAQI
26th Aug 2025209 PMAQI
26th Aug 20251810 PMAQI
26th Aug 20251811 PMAQI
27th Aug 20251712 AMAQI
27th Aug 2025171 AMAQI
27th Aug 2025202 AMAQI
27th Aug 2025233 AMAQI
27th Aug 2025274 AMAQI
27th Aug 2025285 AMAQI

17°C13/21°C

27th Aug 2025296 AMAQI
27th Aug 2025237 AMAQI
27th Aug 2025218 AMAQI
27th Aug 2025219 AMAQI
27th Aug 20252210 AMAQI
27th Aug 20252111 AMAQI
27th Aug 20252212 PMAQI
27th Aug 2025201 PMAQI
27th Aug 2025182 PMAQI
27th Aug 2025183 PMAQI
27th Aug 2025184 PMAQI
27th Aug 2025195 PMAQI
27th Aug 2025206 PMAQI
27th Aug 2025197 PMAQI
27th Aug 2025198 PMAQI
27th Aug 2025219 PMAQI
27th Aug 20252010 PMAQI
27th Aug 20252011 PMAQI
28th Aug 20252212 AMAQI
28th Aug 2025231 AMAQI
28th Aug 2025232 AMAQI
28th Aug 2025223 AMAQI
28th Aug 2025224 AMAQI
28th Aug 2025215 AMAQI

18°C13/23°C

28th Aug 2025196 AMAQI
28th Aug 2025257 AMAQI
28th Aug 2025318 AMAQI
28th Aug 2025389 AMAQI
28th Aug 20253510 AMAQI
28th Aug 20254211 AMAQI
28th Aug 20253712 PMAQI
28th Aug 2025381 PMAQI
28th Aug 2025322 PMAQI
28th Aug 2025303 PMAQI
28th Aug 2025344 PMAQI
28th Aug 2025325 PMAQI
28th Aug 2025316 PMAQI
28th Aug 2025347 PMAQI
28th Aug 2025298 PMAQI
28th Aug 2025269 PMAQI
28th Aug 20252510 PMAQI
28th Aug 20252511 PMAQI
29th Aug 20252612 AMAQI
29th Aug 2025221 AMAQI
29th Aug 2025202 AMAQI
29th Aug 2025233 AMAQI
29th Aug 2025204 AMAQI
29th Aug 2025195 AMAQI

18°C15/22°C

29th Aug 2025186 AMAQI
29th Aug 2025207 AMAQI
29th Aug 2025198 AMAQI
29th Aug 2025189 AMAQI
29th Aug 20251810 AMAQI
29th Aug 20251811 AMAQI
29th Aug 20251712 PMAQI
29th Aug 2025161 PMAQI
29th Aug 2025172 PMAQI
29th Aug 2025173 PMAQI
29th Aug 2025174 PMAQI
29th Aug 2025205 PMAQI
29th Aug 2025176 PMAQI
29th Aug 2025167 PMAQI
29th Aug 2025168 PMAQI
29th Aug 2025209 PMAQI
29th Aug 20252210 PMAQI
29th Aug 20252211 PMAQI
30th Aug 20252412 AMAQI
30th Aug 2025251 AMAQI
30th Aug 2025272 AMAQI
30th Aug 2025263 AMAQI
30th Aug 2025244 AMAQI
30th Aug 2025235 AMAQI

16°C12/20°C

30th Aug 2025236 AMAQI
30th Aug 2025227 AMAQI
30th Aug 2025208 AMAQI
30th Aug 2025199 AMAQI
30th Aug 20251810 AMAQI
30th Aug 20252011 AMAQI
30th Aug 20252012 PMAQI
30th Aug 2025171 PMAQI
30th Aug 2025162 PMAQI
30th Aug 2025163 PMAQI
30th Aug 2025164 PMAQI
30th Aug 2025175 PMAQI
30th Aug 2025186 PMAQI
30th Aug 2025177 PMAQI
30th Aug 2025188 PMAQI
30th Aug 2025209 PMAQI
30th Aug 20252010 PMAQI
30th Aug 20252211 PMAQI
31st Aug 20252612 AMAQI

17°C11/22°C

6 AM
1 PM
8 PM
1 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 11 AM

50AQI

6 hours / Day
180 hours / Month
Avg. Lowest Time
1 PM - 8 PM

47AQI

8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 11 AM (Avg. 50), while the lowest AQI was between 1 PM to 8 PM (Avg. 47).
Night time
Avg. Highest Time
12 AM - 11 PM

49AQI

9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM

49AQI

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. 49), while the lowest AQI was between 12 AM to 11 PM (Avg. 49).

2025 Days Vs Air Quality

Toronto Downtown, Toronto, Ontario, Canada

2025

84%

203

16%

38

0.4%

1

Total number of days with different AQI categories in last 243 days in 2025 (122 days remaining)

Good
203 Days
Moderate
38 Days
Poor
1 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days



Under WHO’s Safe Air Quality Limits: 84%

Health Risk Level:

Low

In 2025, 84% of 243 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

Toronto Downtown, Toronto, 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
22AQI
2nd January 2025
20AQI
3rd January 2025
22AQI
4th January 2025
25AQI
5th January 2025
24AQI
6th January 2025
20AQI
7th January 2025
19AQI
8th January 2025
21AQI
9th January 2025
23AQI
10th January 2025
42AQI
11th January 2025
66AQI
12th January 2025
50AQI
13th January 2025
39AQI
14th January 2025
24AQI
15th January 2025
28AQI
16th January 2025
57AQI
17th January 2025
43AQI
18th January 2025
27AQI
19th January 2025
23AQI
20th January 2025
23AQI
21st January 2025
28AQI
22nd January 2025
33AQI
23rd January 2025
44AQI
24th January 2025
38AQI
25th January 2025
51AQI
26th January 2025
33AQI
27th January 2025
27AQI
28th January 2025
26AQI
29th January 2025
27AQI
30th January 2025
29AQI
31st January 2025
66AQI
1st February 2025
24AQI
2nd February 2025
27AQI
3rd February 2025
61AQI
4th February 2025
22AQI
5th February 2025
25AQI
6th February 2025
40AQI
7th February 2025
27AQI
8th February 2025
41AQI
9th February 2025
30AQI
10th February 2025
30AQI
11th February 2025
44AQI
12th February 2025
26AQI
13th February 2025
26AQI
14th February 2025
28AQI
15th February 2025
37AQI
16th February 2025
25AQI
17th February 2025
24AQI
18th February 2025
25AQI
19th February 2025
24AQI
20th February 2025
22AQI
21st February 2025
27AQI
22nd February 2025
46AQI
23rd February 2025
61AQI
24th February 2025
60AQI
25th February 2025
64AQI
26th February 2025
31AQI
27th February 2025
37AQI
28th February 2025
25AQI
1st March 2025
27AQI
2nd March 2025
33AQI
3rd March 2025
33AQI
4th March 2025
45AQI
5th March 2025
47AQI
6th March 2025
24AQI
7th March 2025
29AQI
8th March 2025
32AQI
9th March 2025
29AQI
10th March 2025
42AQI
11th March 2025
37AQI
12th March 2025
25AQI
13th March 2025
34AQI
14th March 2025
63AQI
15th March 2025
58AQI
16th March 2025
34AQI
17th March 2025
23AQI
18th March 2025
33AQI
19th March 2025
41AQI
20th March 2025
29AQI
21st March 2025
27AQI
22nd March 2025
22AQI
23rd March 2025
26AQI
24th March 2025
29AQI
25th March 2025
19AQI
26th March 2025
24AQI
27th March 2025
29AQI
28th March 2025
22AQI
29th March 2025
18AQI
30th March 2025
31AQI
31st March 2025
31AQI
1st April 2025
18AQI
2nd April 2025
18AQI
3rd April 2025
33AQI
4th April 2025
26AQI
5th April 2025
28AQI
6th April 2025
19AQI
7th April 2025
21AQI
8th April 2025
15AQI
9th April 2025
24AQI
10th April 2025
40AQI
11th April 2025
32AQI
12th April 2025
39AQI
13th April 2025
36AQI
14th April 2025
35AQI
15th April 2025
23AQI
16th April 2025
18AQI
17th April 2025
26AQI
18th April 2025
41AQI
19th April 2025
46AQI
20th April 2025
17AQI
21st April 2025
21AQI
22nd April 2025
19AQI
23rd April 2025
23AQI
24th April 2025
41AQI
25th April 2025
38AQI
26th April 2025
34AQI
27th April 2025
15AQI
28th April 2025
32AQI
29th April 2025
36AQI
30th April 2025
16AQI
1st May 2025
23AQI
2nd May 2025
30AQI
3rd May 2025
17AQI
4th May 2025
19AQI
5th May 2025
24AQI
6th May 2025
23AQI
7th May 2025
34AQI
8th May 2025
17AQI
9th May 2025
21AQI
10th May 2025
28AQI
11th May 2025
28AQI
12th May 2025
28AQI
13th May 2025
39AQI
14th May 2025
25AQI
15th May 2025
31AQI
16th May 2025
31AQI
17th May 2025
31AQI
18th May 2025
21AQI
19th May 2025
17AQI
20th May 2025
17AQI
21st May 2025
17AQI
22nd May 2025
17AQI
23rd May 2025
20AQI
24th May 2025
18AQI
25th May 2025
20AQI
26th May 2025
26AQI
27th May 2025
35AQI
28th May 2025
26AQI
29th May 2025
28AQI
30th May 2025
34AQI
31st May 2025
27AQI
1st June 2025
24AQI
2nd June 2025
23AQI
3rd June 2025
43AQI
4th June 2025
57AQI
5th June 2025
48AQI
6th June 2025
61AQI
7th June 2025
61AQI
8th June 2025
76AQI
9th June 2025
66AQI
10th June 2025
50AQI
11th June 2025
57AQI
12th June 2025
64AQI
13th June 2025
44AQI
14th June 2025
38AQI
15th June 2025
41AQI
16th June 2025
42AQI
17th June 2025
42AQI
18th June 2025
46AQI
19th June 2025
42AQI
20th June 2025
34AQI
21st June 2025
47AQI
22nd June 2025
52AQI
23rd June 2025
55AQI
24th June 2025
56AQI
25th June 2025
47AQI
26th June 2025
42AQI
27th June 2025
42AQI
28th June 2025
35AQI
29th June 2025
37AQI
30th June 2025
39AQI
1st July 2025
42AQI
2nd July 2025
38AQI
3rd July 2025
47AQI
4th July 2025
40AQI
5th July 2025
49AQI
6th July 2025
54AQI
7th July 2025
47AQI
8th July 2025
35AQI
9th July 2025
37AQI
10th July 2025
44AQI
11th July 2025
51AQI
12th July 2025
49AQI
13th July 2025
46AQI
14th July 2025
49AQI
15th July 2025
55AQI
16th July 2025
54AQI
17th July 2025
42AQI
18th July 2025
26AQI
19th July 2025
31AQI
20th July 2025
29AQI
21st July 2025
39AQI
22nd July 2025
27AQI
23rd July 2025
23AQI
24th July 2025
32AQI
25th July 2025
33AQI
26th July 2025
50AQI
27th July 2025
48AQI
28th July 2025
47AQI
29th July 2025
43AQI
30th July 2025
45AQI
31st July 2025
77AQI
1st August 2025
53AQI
2nd August 2025
37AQI
3rd August 2025
90AQI
4th August 2025
110AQI
5th August 2025
97AQI
6th August 2025
77AQI
7th August 2025
82AQI
8th August 2025
85AQI
9th August 2025
75AQI
10th August 2025
65AQI
11th August 2025
63AQI
12th August 2025
58AQI
13th August 2025
45AQI
14th August 2025
61AQI
15th August 2025
63AQI
16th August 2025
59AQI
17th August 2025
42AQI
18th August 2025
17AQI
19th August 2025
23AQI
20th August 2025
21AQI
21st August 2025
19AQI
22nd August 2025
26AQI
23rd August 2025
34AQI
24th August 2025
34AQI
25th August 2025
23AQI
26th August 2025
20AQI
27th August 2025
20AQI
28th August 2025
27AQI
29th August 2025
20AQI
30th August 2025
22AQI
31st August 2025
1st September 2025
2nd September 2025
3rd September 2025
4th September 2025
5th September 2025
6th September 2025
7th September 2025
8th September 2025
9th September 2025
10th September 2025
11th September 2025
12th September 2025
13th September 2025
14th September 2025
15th September 2025
16th September 2025
17th September 2025
18th September 2025
19th September 2025
20th September 2025
21st September 2025
22nd September 2025
23rd September 2025
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
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

33AQI

34AQI

32AQI

28AQI

25AQI

47AQI

43AQI

49AQI


No. of days

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

202536AQI

27
4
24
4
29
2
30
31
20
10
26
5
16
13
1
203
38
1

Highest AQI recorded in

August

49AQI


Lowest AQI recorded in

May

25AQI


202432AQI

28
3
26
3
29
2
29
1
29
2
25
3
23
8
25
6
29
1
29
2
30
29
2
331
33

Highest AQI recorded in

July

40AQI


Lowest AQI recorded in

November

24AQI


202337AQI

26
5
24
4
28
3
25
5
25
6
15
13
1
1
23
8
26
5
29
1
29
2
28
1
25
6
303
59
1
1

Highest AQI recorded in

June

58AQI


Lowest AQI recorded in

November

29AQI


202235AQI

29
2
21
26
5
23
1
25
6
27
3
18
5
1
26
1
24
7
24
6
29
2
273
38

Highest AQI recorded in

November

40AQI


Lowest AQI recorded in

August

18AQI


202136AQI

23
7
25
3
24
7
26
4
25
6
26
4
21
7
2
1
24
7
30
31
27
3
29
2
311
50
2
1

Highest AQI recorded in

July

50AQI


Lowest AQI recorded in

October

26AQI


202032AQI

12
20
1
15
3
26
4
29
2
30
1
26
4
30
1
20
5
26
5
234
26

Highest AQI recorded in

June

38AQI


Lowest AQI recorded in

October

27AQI


Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
37AQI
Least Polluted Year Recorded
2024(Avg.)
32AQI


Toronto Downtown's annual 2025 AQI (36) shows an average percentage change of 5.6% (worsened AQI) compared to previous years: 2020 (32), 2021 (36), 2022 (35), 2023 (37), 2024 (32).