London, Ontario, Canada Climate Change Severity

57
High
The current climate change severity in London is High, with a 20.6% worsening in the climate score compared to last 16 years. This suggests deteriorating conditions, with increasing negative impacts on weather patterns and environmental conditions.
Data: Jan. to Jul. (Historical Vs 2026) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

London Weather Condition Changes (Historic Vs 2026)

2026
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2026

Over the past 16 year(s), London temperature has changed by around +8.1%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Jul. (Historical Vs 2026)

Comparison of Weather Condition (Historic Vs 2026)

HistoricDays

Year 2026Days

Change

sunnySunny
2573
192%
cloudyCloudy
4111
-73.1%
rainyRainy
9156
-38.4%
snowySnowy
1015
50%
mistyMisty
15
400%

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

Climate Change Indicators:

Over the past 16 years, London has experienced measurable shifts in key climate parameters, contributing to the current severity score of 57 (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

57/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2026, London experienced significant changes:

Temperature change of

+0.6 °C

Variation in annual rainfall

+23.4 %

Change in average humidity

-6.16 %

PM2.5 levels surged by

+47.68 %

Heatwave changed by

+3 Days

Coldwave changed by

0 Day

Wind speeds changed by

+4.12 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.

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

London Weather Forecast 30 Days (August - September 2026)
London, Ontario, Canada

Condition
Temperature IconTemperature
Humidity IconHumi.
Wind IconWind Speed
Mon. 3, Aug.
sunnySunny
Temperature Icon24°/14°
Humidity Icon75%
Wind Icon20.5km/h
Tue. 4, Aug.
sunnySunny
Temperature Icon28°/13°
Humidity Icon57%
Wind Icon12.2km/h
Wed. 5, Aug.
sunnySunny
Temperature Icon26°/18°
Humidity Icon83%
Wind Icon15.8km/h
Thu. 6, Aug.
mistMist
Temperature Icon28°/18°
Humidity Icon83%
Wind Icon26.6km/h
Fri. 7, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon28°/17°
Humidity Icon86%
Wind Icon18.4km/h
Sat. 8, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon29°/20°
Humidity Icon85%
Wind Icon23.8km/h
Sun. 9, Aug.
sunnySunny
Temperature Icon24°/16°
Humidity Icon76%
Wind Icon18.4km/h
Mon. 10, Aug.
sunnySunny
Temperature Icon27°/17°
Humidity Icon80%
Wind Icon22km/h
Tue. 11, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/16°
Humidity Icon81%
Wind Icon18km/h
Wed. 12, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/17°
Humidity Icon81%
Wind Icon17.9km/h
Thu. 13, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/15°
Humidity Icon77%
Wind Icon15.8km/h
Fri. 14, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/16°
Humidity Icon78%
Wind Icon15.6km/h
Sat. 15, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon26°/16°
Humidity Icon77%
Wind Icon14.8km/h
Sun. 16, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/16°
Humidity Icon80%
Wind Icon17.5km/h
Mon. 17, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/16°
Humidity Icon82%
Wind Icon17.9km/h
Tue. 18, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon24°/16°
Humidity Icon81%
Wind Icon16.6km/h
Wed. 19, Aug.
heavy rain at timesHeavy Rain
Temperature Icon25°/15°
Humidity Icon77%
Wind Icon15.1km/h
Thu. 20, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon26°/16°
Humidity Icon78%
Wind Icon17.9km/h
Fri. 21, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/16°
Humidity Icon79%
Wind Icon17.1km/h
Sat. 22, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon24°/15°
Humidity Icon78%
Wind Icon16.2km/h
Sun. 23, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/15°
Humidity Icon77%
Wind Icon16.2km/h
Mon. 24, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/15°
Humidity Icon78%
Wind Icon17.3km/h
Tue. 25, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon24°/16°
Humidity Icon80%
Wind Icon17.1km/h
Wed. 26, Aug.
heavy rain at timesHeavy Rain
Temperature Icon24°/15°
Humidity Icon80%
Wind Icon16.3km/h
Thu. 27, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/15°
Humidity Icon78%
Wind Icon17.5km/h
Fri. 28, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/15°
Humidity Icon81%
Wind Icon17.8km/h
Sat. 29, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/15°
Humidity Icon78%
Wind Icon17.5km/h
Sun. 30, Aug.
moderate rain at timesRain
Temperature Icon24°/15°
Humidity Icon77%
Wind Icon17.8km/h
Mon. 31, Aug.
patchy rain possibleRain Possible
Temperature Icon24°/14°
Humidity Icon77%
Wind Icon15.7km/h
Tue. 1, Sep.
moderate rain at timesRain
Temperature Icon25°/14°
Humidity Icon76%
Wind Icon16.4km/h
Wed. 2, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon25°/15°
Humidity Icon76%
Wind Icon17km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSat. 8, Aug.

29°C

Low will be onTue. 4, Aug.

13°C

HumidityHumidity

High will be onFri. 7, Aug.

86%

Low will be onTue. 4, Aug.

57%

Wind SpeedWind Speed

High will be onThu. 6, Aug.

26.6km/h

Low will be onTue. 4, Aug.

12.2km/h

PrecipitationPrecipitation

High will be onWed. 5, Aug.

13.7mm

Low will be onSun. 9, Aug.

0.3mm

Ultraviolet IndexUV

High will be onTue. 4, Aug.

8.6

Low will be onFri. 14, Aug.

4

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