London, Ontario, Canada Climate Change Severity
High
London Weather Condition Changes (Historic Vs 2025)
Over the past 15 year(s), London temperature has changed by around -1.2%, and has experienced notable climate changes.
Comparison of Weather Condition (Historic Vs 2025)
HistoricDays
Year 2025Days
Change
Sunny
Cloudy
Rainy
Snowy
MistyDisclaimer: Other weather conditions not shown may affect the total day count.
Climate Change Indicators:
Over the past 15 years, London has experienced measurable shifts in key climate parameters, contributing to the current severity score of 48 (within the High severity category). This suggests worsening climate conditions from the previous years. Here’s a breakdown of the specific changes observed:
Severity Score
48/100
High
From 2010 to 2025, London experienced significant changes:
Temperature change of
-0.1 °C
Variation in annual rainfall
+36.9 %
Change in average humidity
+0.5 %
PM2.5 levels surged by
-10.8 %
Heatwave changed by
-4.06 day(s)
Coldwave changed by
-4.4 day(s)
Wind speeds changed by
+3.2 km/h
These indicators show that London is experiencing a more volatile and extreme climate, reinforcing the need for urgent intervention to mitigate risks. As the severity score rises, focus must shift to adaptation and emergency preparedness.
London Weather Forecast 30 Days (October - November 2025)London, Ontario, Canada
Temperature
humi.
Wind SpeedPatchy rain nearby10°/3°82%21km/hMist9°/5°85%11km/hCloudy 10°/2°80%14km/hSunny10°/1°70%26km/h
Partly Cloudy 10°/3°65%26km/h
Overcast 9°/2°66%27km/hOvercast 8°/4°73%30km/hPartly Cloudy 12°/2°67%28km/hPatchy rain nearby8°/4°75%25km/hPatchy rain nearby6°/2°84%26km/hPatchy rain nearby9°/3°82%31km/hPatchy rain nearby7°/3°72%29km/hPatchy rain nearby9°/3°83%27km/h
Moderate rain12°/4°86%49km/hPatchy rain possible10°/3°75%21km/hPatchy rain possible10°/3°75%18km/h
Heavy rain at times10°/2°77%23km/h
Moderate or heavy rain shower9°/3°79%25km/hModerate or heavy rain shower7°/0°75%21km/h
Moderate rain at times6°/0°77%23km/hModerate or heavy rain shower6°/0°79%21km/hModerate or heavy rain shower7°/1°83%22km/hModerate or heavy rain shower7°/0°82%21km/hModerate or heavy rain shower7°/0°84%26km/hModerate or heavy rain shower7°/0°81%24km/hModerate or heavy rain shower6°/-1°80%25km/hModerate or heavy rain shower5°/-1°79%26km/hModerate or heavy rain shower5°/-1°82%25km/hModerate or heavy rain shower5°/-2°82%24km/hHighest & Lowest Weather Forecasts
TemperatureHumidityWind Speed
Precipitation
UV
