Toronto, Ontario, Canada Climate Change Severity

48
High
The current climate change severity in Toronto is High, with a 11.9% improvement in the climate score compared to last 15 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to Sep. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Toronto Weather Condition Changes (Historic Vs 2025)

2025
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2025

Over the past 15 year(s), Toronto temperature has changed by around +1.7%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Sep. (Historical Vs 2025)

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
4324
-44.1%
cloudyCloudy
6856
-17.6%
rainyRainy
10881
-25%
snowySnowy
811
37.5%
mistyMisty
014
100%

Disclaimer: Other weather conditions not shown may affect the total day count.

Climate Change Indicators:

Over the past 15 years, Toronto has experienced measurable shifts in key climate parameters, contributing to the current severity score of 48 (within the High severity category). While the score remains High, certain factors have improved over time. Here’s a breakdown of the specific changes observed:

Severity Score

48/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Toronto experienced significant changes:

Temperature change of

+0.1 °C

Variation in annual rainfall

+41.4 %

Change in average humidity

+0.5 %

PM2.5 levels surged by

-12.7 %

Heatwave changed by

+0.3 day(s)

Coldwave changed by

-9.4 day(s)

Wind speeds changed by

-0.6 km/h

These indicators show improvement in key parametes of climate, but Toronto remains in the High severity category. Continuous focus on climate resilience is necessary to avoid further worsening and ensure sustainability.

Check how we calculate Climate Change Severity
Based on data from Jan. to Sep.

Toronto Weather Forecast 30 Days (October - November 2025)
Toronto, Ontario, Canada

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Tue. 28, Oct.
sunnySunny
Temperature Icon13°/2°
Humidity Icon73%
Wind Icon19km/h
Wed. 29, Oct.
overcastOvercast
Temperature Icon6°/2°
Humidity Icon85%
Wind Icon14km/h
Thu. 30, Oct.
moderate rainModerate rain
Temperature Icon7°/5°
Humidity Icon88%
Wind Icon24km/h
Fri. 31, Oct.
heavy rainHeavy rain
Temperature Icon7°/5°
Humidity Icon89%
Wind Icon26km/h
Sat. 1, Nov.
overcastOvercast
Temperature Icon9°/4°
Humidity Icon67%
Wind Icon20km/h
Sun. 2, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon10°/6°
Humidity Icon71%
Wind Icon8km/h
Mon. 3, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon9°/5°
Humidity Icon69%
Wind Icon11km/h
Tue. 4, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon9°/4°
Humidity Icon80%
Wind Icon19km/h
Wed. 5, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon9°/3°
Humidity Icon71%
Wind Icon18km/h
Thu. 6, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon9°/4°
Humidity Icon76%
Wind Icon19km/h
Fri. 7, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon15°/8°
Humidity Icon90%
Wind Icon30km/h
Sat. 8, Nov.
overcastOvercast
Temperature Icon13°/9°
Humidity Icon71%
Wind Icon16km/h
Sun. 9, Nov.
moderate rainModerate rain
Temperature Icon7°/2°
Humidity Icon82%
Wind Icon21km/h
Mon. 10, Nov.
moderate rainModerate rain
Temperature Icon5°/2°
Humidity Icon91%
Wind Icon36km/h
Wed. 12, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon8°/1°
Humidity Icon71%
Wind Icon21km/h
Thu. 13, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon6°/1°
Humidity Icon73%
Wind Icon23km/h
Fri. 14, Nov.
heavy rain at timesHeavy rain at times
Temperature Icon6°/2°
Humidity Icon75%
Wind Icon20km/h
Sat. 15, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon8°/2°
Humidity Icon78%
Wind Icon21km/h
Sun. 16, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/2°
Humidity Icon79%
Wind Icon21km/h
Mon. 17, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/1°
Humidity Icon80%
Wind Icon23km/h
Tue. 18, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/1°
Humidity Icon78%
Wind Icon23km/h
Wed. 19, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/1°
Humidity Icon77%
Wind Icon23km/h
Thu. 20, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/0°
Humidity Icon75%
Wind Icon25km/h
Fri. 21, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/0°
Humidity Icon77%
Wind Icon25km/h
Sun. 23, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/-1°
Humidity Icon79%
Wind Icon22km/h
Mon. 24, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/0°
Humidity Icon78%
Wind Icon23km/h
Tue. 25, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/1°
Humidity Icon82%
Wind Icon23km/h
Wed. 26, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/1°
Humidity Icon80%
Wind Icon23km/h
Thu. 27, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/0°
Humidity Icon78%
Wind Icon25km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onFri. 7, Nov.

14.8°C

Low will be onSun. 23, Nov.

-0.6°C

HumidityHumidity

High will be onMon. 10, Nov.

91%

Low will be onSat. 1, Nov.

67%

Wind SpeedWind Speed

High will be onMon. 10, Nov.

36km/h

Low will be onSun. 2, Nov.

7.9km/h

PrecipitationPrecipitation

High will be onFri. 31, Oct.

61.4mm

Low will be onSat. 8, Nov.

0.01mm

Ultraviolet IndexUV

High will be onFri. 7, Nov.

3

Low will be onMon. 10, Nov.

1