San Leandro, California, United States Climate Change Severity

67
Very High
The current climate change severity in San Leandro is Very High, with a 39.3% worsening in the climate score compared to last 15 years. This suggests deteriorating conditions, with increasing negative impacts on weather patterns and environmental conditions.
Data: Jan. to Sep. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

San Leandro 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), San Leandro temperature has changed by around -13.7%, 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
14211
-92.2%
cloudyCloudy
6531
-52.3%
rainyRainy
4839
-18.7%
snowySnowy
00
0%
mistyMisty
061
100%

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

Climate Change Indicators:

Over the past 15 years, San Leandro has experienced measurable shifts in key climate parameters, contributing to the current severity score of 67 (within the Very High severity category). This suggests worsening climate conditions from the previous years. Here’s a breakdown of the specific changes observed:

Severity Score

67/100

Very High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, San Leandro experienced significant changes:

Temperature change of

-2.04 °C

Variation in annual rainfall

-6.9 %

Change in average humidity

+19.2 %

PM2.5 levels surged by

-32.9 %

Heatwave changed by

-4.6 day(s)

Coldwave changed by

+13.7 day(s)

Wind speeds changed by

+0.3 km/h

These indicators show a dramatic increase in volatility and worsening conditions. San Leandro's Very High severity status requires urgent and immediate adaptation and mitigation strategies, particularly focused on managing extreme weather events, improving air quality, and ensuring water resources are adequate for the population.

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

San Leandro Weather Forecast 30 Days (October - November 2025)
San Leandro, California, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Wed. 29, Oct.
sunnySunny
Temperature Icon28°/13°
Humidity Icon58%
Wind Icon11km/h
Thu. 30, Oct.
overcastOvercast
Temperature Icon13°/10°
Humidity Icon95%
Wind Icon12km/h
Fri. 31, Oct.
mistMist
Temperature Icon20°/10°
Humidity Icon82%
Wind Icon11km/h
Sat. 1, Nov.
sunnySunny
Temperature Icon23°/13°
Humidity Icon64%
Wind Icon10km/h
Sun. 2, Nov.
sunnySunny
Temperature Icon23°/13°
Humidity Icon77%
Wind Icon9km/h
Mon. 3, Nov.
sunnySunny
Temperature Icon26°/15°
Humidity Icon52%
Wind Icon7km/h
Tue. 4, Nov.
sunnySunny
Temperature Icon24°/14°
Humidity Icon57%
Wind Icon12km/h
Wed. 5, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon17°/12°
Humidity Icon65%
Wind Icon27km/h
Thu. 6, Nov.
sunnySunny
Temperature Icon19°/11°
Humidity Icon51%
Wind Icon12km/h
Fri. 7, Nov.
sunnySunny
Temperature Icon22°/12°
Humidity Icon48%
Wind Icon6km/h
Sat. 8, Nov.
sunnySunny
Temperature Icon23°/13°
Humidity Icon44%
Wind Icon6km/h
Sun. 9, Nov.
sunnySunny
Temperature Icon23°/14°
Humidity Icon54%
Wind Icon8km/h
Mon. 10, Nov.
sunnySunny
Temperature Icon19°/11°
Humidity Icon74%
Wind Icon10km/h
Wed. 12, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon19°/10°
Humidity Icon64%
Wind Icon9km/h
Thu. 13, Nov.
moderate rain at timesModerate rain at times
Temperature Icon18°/9°
Humidity Icon66%
Wind Icon10km/h
Fri. 14, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon18°/10°
Humidity Icon70%
Wind Icon11km/h
Sat. 15, Nov.
heavy rain at timesHeavy rain at times
Temperature Icon18°/9°
Humidity Icon66%
Wind Icon13km/h
Sun. 16, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/9°
Humidity Icon63%
Wind Icon12km/h
Mon. 17, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/9°
Humidity Icon66%
Wind Icon10km/h
Tue. 18, Nov.
heavy rain at timesHeavy rain at times
Temperature Icon17°/9°
Humidity Icon66%
Wind Icon12km/h
Wed. 19, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/9°
Humidity Icon67%
Wind Icon13km/h
Thu. 20, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/9°
Humidity Icon70%
Wind Icon14km/h
Fri. 21, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/9°
Humidity Icon66%
Wind Icon13km/h
Sun. 23, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/9°
Humidity Icon69%
Wind Icon12km/h
Mon. 24, Nov.
moderate rain at timesModerate rain at times
Temperature Icon17°/8°
Humidity Icon65%
Wind Icon10km/h
Tue. 25, Nov.
heavy rain at timesHeavy rain at times
Temperature Icon17°/8°
Humidity Icon62%
Wind Icon10km/h
Wed. 26, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/8°
Humidity Icon60%
Wind Icon12km/h
Thu. 27, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/8°
Humidity Icon62%
Wind Icon13km/h
Fri. 28, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/7°
Humidity Icon63%
Wind Icon14km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onWed. 29, Oct.

28.4°C

Low will be onFri. 28, Nov.

7.3°C

HumidityHumidity

High will be onThu. 30, Oct.

95%

Low will be onSat. 8, Nov.

44%

Wind SpeedWind Speed

High will be onWed. 5, Nov.

27km/h

Low will be onFri. 7, Nov.

6.1km/h

PrecipitationPrecipitation

High will be onThu. 20, Nov.

3.9mm

Low will be onWed. 12, Nov.

0.1mm

Ultraviolet IndexUV

High will be onMon. 3, Nov.

5

Low will be onWed. 5, Nov.

3

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