Aspen, Colorado, United States Climate Change Severity

57
High
The current climate change severity in Aspen is High, with a 20.5% 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 Aug. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Aspen 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), Aspen temperature has changed by around +28.8%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
5242
-19.2%
cloudyCloudy
5452
-3.7%
rainyRainy
9958
-41.4%
snowySnowy
2119
-9.5%
mistyMisty
00
0%

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

Climate Change Indicators:

Over the past 15 years, Aspen 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 2025, Aspen experienced significant changes:

Temperature change of

+1.2 °C

Variation in annual rainfall

+23.01 %

Change in average humidity

-22.03 %

PM2.5 levels surged by

-8.5 %

Heatwave changed by

+7 day(s)

Coldwave changed by

+0.3 day(s)

Wind speeds changed by

+1.3 km/h

These indicators show that Aspen 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 Aug.

Aspen Weather Forecast 30 Days (September - October 2025)
Aspen, Colorado, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Sun. 7, Sep.
thundery outbreaks possibleThundery outbreaks in nearby
Temperature Icon19°/4°
Humidity Icon67%
Wind Icon13km/h
Mon. 8, Sep.
partly cloudyPartly Cloudy
Temperature Icon21°/5°
Humidity Icon52%
Wind Icon13km/h
Tue. 9, Sep.
thundery outbreaks possibleThundery outbreaks in nearby
Temperature Icon20°/4°
Humidity Icon49%
Wind Icon17km/h
Wed. 10, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon22°/2°
Humidity Icon61%
Wind Icon17km/h
Thu. 11, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon20°/2°
Humidity Icon69%
Wind Icon9km/h
Fri. 12, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon19°/2°
Humidity Icon71%
Wind Icon13km/h
Sat. 13, Sep.
sunnySunny
Temperature Icon21°/1°
Humidity Icon55%
Wind Icon16km/h
Sun. 14, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon20°/2°
Humidity Icon53%
Wind Icon8km/h
Mon. 15, Sep.
sunnySunny
Temperature Icon21°/1°
Humidity Icon50%
Wind Icon9km/h
Tue. 16, Sep.
partly cloudyPartly Cloudy
Temperature Icon23°/3°
Humidity Icon38%
Wind Icon8km/h
Wed. 17, Sep.
sunnySunny
Temperature Icon23°/3°
Humidity Icon33%
Wind Icon8km/h
Thu. 18, Sep.
sunnySunny
Temperature Icon21°/0°
Humidity Icon41%
Wind Icon30km/h
Fri. 19, Sep.
sunnySunny
Temperature Icon16°/-6°
Humidity Icon53%
Wind Icon15km/h
Sat. 20, Sep.
sunnySunny
Temperature Icon20°/-3°
Humidity Icon26%
Wind Icon18km/h
Sun. 21, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/1°
Humidity Icon55%
Wind Icon14km/h
Mon. 22, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/1°
Humidity Icon56%
Wind Icon14km/h
Tue. 23, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/0°
Humidity Icon59%
Wind Icon14km/h
Wed. 24, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon18°/0°
Humidity Icon54%
Wind Icon12km/h
Thu. 25, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon19°/0°
Humidity Icon48%
Wind Icon14km/h
Fri. 26, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon19°/0°
Humidity Icon48%
Wind Icon13km/h
Sat. 27, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon18°/1°
Humidity Icon57%
Wind Icon11km/h
Sun. 28, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon19°/1°
Humidity Icon54%
Wind Icon12km/h
Mon. 29, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon18°/1°
Humidity Icon56%
Wind Icon14km/h
Tue. 30, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/2°
Humidity Icon60%
Wind Icon16km/h
Wed. 1, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/0°
Humidity Icon61%
Wind Icon15km/h
Thu. 2, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/-1°
Humidity Icon59%
Wind Icon15km/h
Fri. 3, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/-2°
Humidity Icon57%
Wind Icon14km/h
Sat. 4, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/-2°
Humidity Icon62%
Wind Icon16km/h
Sun. 5, Oct.
heavy rain at timesHeavy rain at times
Temperature Icon14°/-2°
Humidity Icon61%
Wind Icon15km/h
Mon. 6, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon12°/-3°
Humidity Icon60%
Wind Icon12km/h
Tue. 7, Oct.
moderate rain at timesModerate rain at times
Temperature Icon15°/-3°
Humidity Icon54%
Wind Icon10km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onWed. 17, Sep.

23.4°C

Low will be onFri. 19, Sep.

-5.6°C

HumidityHumidity

High will be onFri. 12, Sep.

71%

Low will be onSat. 20, Sep.

26%

Wind SpeedWind Speed

High will be onThu. 18, Sep.

29.5km/h

Low will be onTue. 16, Sep.

7.6km/h

PrecipitationPrecipitation

High will be onTue. 23, Sep.

3.1mm

Low will be onFri. 26, Sep.

0.2mm

Ultraviolet IndexUV

High will be onMon. 15, Sep.

4

Low will be onMon. 6, Oct.

1

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