Add

Air quality in Toronto

Air quality index (AQI⁺) and PM2.5 air pollution in Toronto • 622.9K Followers • 11:00, Oct 24 Local time

US AQI⁺

Good

Main pollutant:

NO₂

25 µg/m³

46°

8.1 km/h

70 %

Hourly forecast

Toronto air quality index (AQI⁺) forecast

Now

46°

8.1

km/h

70%

12:00

46°

8.9

km/h

65%

13:00

48°

8.9

km/h

59%

14:00

48°

8.9

km/h

55%

15:00

48°

8.9

km/h

52%

16:00

48°

6.7

km/h

46%

17:00

46°

6.7

km/h

52%

18:00

46°

4.5

km/h

59%

19:00

45°

4.5

km/h

60%

20:00

45°

4.5

km/h

57%

21:00

45°

4.5

km/h

56%

22:00

45°

4.5

km/h

58%

23:00

43°

4.5

km/h

62%

Sat

00:00

43°

4.5

km/h

65%

01:00

43°

4.5

km/h

66%

02:00

43°

4.5

km/h

68%

03:00

41°

2.2

km/h

70%

04:00

41°

2.2

km/h

71%

05:00

41°

2.2

km/h

73%

06:00

41°

2.2

km/h

73%

07:00

41°

2.2

km/h

74%

08:00

41°

2.2

km/h

77%

09:00

41°

2.2

km/h

76%

10:00

43°

2.2

km/h

67%

11:00

45°

2.2

km/h

59%

12:00

48°

2.2

km/h

52%

13:00

50°

2.2

km/h

47%

14:00

48°

4.5

km/h

47%

15:00

48°

2.2

km/h

47%

16:00

48°

2.2

km/h

47%

17:00

48°

2.2

km/h

47%

18:00

46°

4.5

km/h

51%

19:00

45°

4.5

km/h

56%

20:00

45°

4.5

km/h

58%

21:00

43°

2.2

km/h

60%

22:00

43°

2.2

km/h

60%

23:00

43°

2.2

km/h

58%

Sun

00:00

41°

2.2

km/h

59%

01:00

41°

2.2

km/h

58%

02:00

41°

2.2

km/h

58%

03:00

39°

2.2

km/h

59%

04:00

39°

2.2

km/h

58%

05:00

39°

2.2

km/h

57%

06:00

39°

2.2

km/h

58%

07:00

37°

2.2

km/h

60%

08:00

37°

2.2

km/h

60%

09:00

39°

2.2

km/h

58%

10:00

39°

2.2

km/h

55%

11:00

43°

2.2

km/h

50%

12:00

45°

2.2

km/h

46%

13:00

46°

2.2

km/h

43%

14:00

48°

2.2

km/h

40%

15:00

50°

2.2

km/h

39%

16:00

48°

2.2

km/h

37%

17:00

48°

4.5

km/h

37%

18:00

46°

2.2

km/h

42%

19:00

45°

2.2

km/h

46%

20:00

45°

2.2

km/h

47%

21:00

43°

2.2

km/h

47%

22:00

41°

4.5

km/h

46%

23:00

41°

6.7

km/h

47%

Mon

00:00

39°

6.7

km/h

51%

01:00

39°

4.5

km/h

53%

02:00

37°

4.5

km/h

53%

03:00

37°

4.5

km/h

56%

04:00

37°

4.5

km/h

60%

05:00

36°

4.5

km/h

63%

06:00

36°

4.5

km/h

66%

07:00

36°

4.5

km/h

67%

08:00

36°

4.5

km/h

68%

09:00

36°

4.5

km/h

67%

10:00

39°

6.7

km/h

63%

11:00

41°

6.7

km/h

59%

Daily forecast

Toronto air quality index (AQI⁺) forecast

Today

48°

43°

8.9

km/h

59%

Sat

50°

41°

4.5

km/h

47%

Sun

50°

37°

6.7

km/h

43%

Air pollutants

What is the current air quality in Toronto?

PM2.5 concentration currently meets the WHO annual PM2.5 guideline.

Real-time Toronto air pollution map

Health recommendations

Enjoy outdoor activities

Open your windows to bring clean, fresh air indoors

Get a monitor

Protect yourself from air pollution in Toronto

Shop IQAir products

HealthPro Series - Medical grade air purifiers

Atem Series - Smart air purifiers

AirVisual Series - Best air quality monitors

Pollen

What is the pollen count in Toronto today?

Index

None

Tree None	0%
Grass None	0%
Weed None	0%

Source:

tomorrow.io

Pollen forecast in Toronto

Health recommendations

Enjoy outdoor activities

Open your windows to bring clean, fresh air indoors

Get a monitor

Real-time Toronto air pollution map

Pollen

What is the pollen count in Toronto today?

Index

None

Tree None	0%
Grass None	0%
Weed None	0%

Source:

tomorrow.io

Pollen forecast in Toronto

Protect yourself from air pollution in Toronto

Shop IQAir products

HealthPro Series - Medical grade air purifiers

Atem Series - Smart air purifiers

AirVisual Series - Best air quality monitors

Most polluted locations near Toronto

Worldwide AQI⁺ ranking

Station ranking

Real-time Canada AQI⁺ station ranking

#	Stations	AQI⁺ US
1	Ontario Ministry of the Environment Toronto West	22
2	Lowther Ave	21
3	Forest Hill North	18
4	Wellington Place	18
5	Ontario Ministry of the Environment Toronto East	17
6	Russell Street	15
7	Toronto Downtown	14
8	376-350 Dundas St E	13
9	11-63 Coe Hill Dr	12
10	Wolfrey Avenue	12

City ranking

Real-time Canada AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Slave Lake, Alberta	59
2	Smithers, British Columbia	57
3	Golden, British Columbia	54
4	Campbell River, British Columbia	52
5	Courtenay, British Columbia	52
6	Coldstream, British Columbia	49
7	Victoria, British Columbia	49
8	Vernon, British Columbia	47
9	Nanaimo, British Columbia	46
10	Penticton, British Columbia	44

History

Historic air quality graph for Toronto

6 AQI⁺ US

Good

10:00 Oct 24 Local time

AQI⁺ US

October 24, 2025: Beijing among top 10 most polluted cities in the world

Pakistan Air Quality Alert

Indoor Air Quality Alert: Storm Benjamin Flooding

History

Historic air quality graph for Toronto

6 AQI⁺ US

Good

10:00 Oct 24 Local time

AQI⁺ US

October 24, 2025: Beijing among top 10 most polluted cities in the world

Pakistan Air Quality Alert

Indoor Air Quality Alert: Storm Benjamin Flooding

Most polluted locations near Toronto

Worldwide AQI⁺ ranking

Station ranking

Real-time Canada AQI⁺ station ranking

#	Stations	AQI⁺ US
1	Ontario Ministry of the Environment Toronto West	22
2	Lowther Ave	21
3	Forest Hill North	18
4	Wellington Place	18
5	Ontario Ministry of the Environment Toronto East	17
6	Russell Street	15
7	Toronto Downtown	14
8	376-350 Dundas St E	13
9	11-63 Coe Hill Dr	12
10	Wolfrey Avenue	12

City ranking

Real-time Canada AQI⁺ city ranking

#	Cities	AQI⁺ US
1	Slave Lake, Alberta	59
2	Smithers, British Columbia	57
3	Golden, British Columbia	54
4	Campbell River, British Columbia	52
5	Courtenay, British Columbia	52
6	Coldstream, British Columbia	49
7	Victoria, British Columbia	49
8	Vernon, British Columbia	47
9	Nanaimo, British Columbia	46
10	Penticton, British Columbia	44