Aspen, Colorado, United States Climate Change Severity

57
High
The current climate change severity in Aspen is High, with a 18.2% 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)

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 +20.4%, 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
6549
-24.6%
cloudyCloudy
5957
-3.3%
rainyRainy
11058
-47.2%
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

+1.04 °C

Variation in annual rainfall

+47.1 %

Change in average humidity

-20.2 %

PM2.5 levels surged by

-15.7 %

Heatwave changed by

+4.8 day(s)

Coldwave changed by

-0.3 day(s)

Wind speeds changed by

+1.2 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 Sep.

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

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Fri. 17, Oct.
sunnySunny
Temperature Icon10°/1°
Humidity Icon56%
Wind Icon13km/h
Sat. 18, Oct.
sunnySunny
Temperature Icon9°/0°
Humidity Icon49%
Wind Icon17km/h
Sun. 19, Oct.
sunnySunny
Temperature Icon15°/-3°
Humidity Icon34%
Wind Icon13km/h
Mon. 20, Oct.
sunnySunny
Temperature Icon13°/-4°
Humidity Icon49%
Wind Icon16km/h
Tue. 21, Oct.
sunnySunny
Temperature Icon15°/-3°
Humidity Icon44%
Wind Icon11km/h
Wed. 22, Oct.
sunnySunny
Temperature Icon15°/-3°
Humidity Icon38%
Wind Icon9km/h
Thu. 23, Oct.
sunnySunny
Temperature Icon14°/-2°
Humidity Icon47%
Wind Icon9km/h
Fri. 24, Oct.
sunnySunny
Temperature Icon15°/-4°
Humidity Icon55%
Wind Icon9km/h
Sat. 25, Oct.
sunnySunny
Temperature Icon15°/-2°
Humidity Icon42%
Wind Icon9km/h
Sun. 26, Oct.
sunnySunny
Temperature Icon13°/-3°
Humidity Icon44%
Wind Icon17km/h
Mon. 27, Oct.
light freezing rainLight freezing rain
Temperature Icon1°/-14°
Humidity Icon82%
Wind Icon18km/h
Tue. 28, Oct.
sunnySunny
Temperature Icon8°/-13°
Humidity Icon80%
Wind Icon9km/h
Wed. 29, Oct.
sunnySunny
Temperature Icon14°/-7°
Humidity Icon66%
Wind Icon11km/h
Thu. 30, Oct.
sunnySunny
Temperature Icon12°/-4°
Humidity Icon59%
Wind Icon22km/h
Fri. 31, Oct.
patchy moderate snowPatchy moderate snow
Temperature Icon7°/-10°
Humidity Icon70%
Wind Icon11km/h
Sat. 1, Nov.
moderate snowModerate snow
Temperature Icon8°/-9°
Humidity Icon67%
Wind Icon12km/h
Sun. 2, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon8°/-9°
Humidity Icon67%
Wind Icon11km/h
Mon. 3, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon7°/-8°
Humidity Icon71%
Wind Icon12km/h
Tue. 4, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon6°/-9°
Humidity Icon73%
Wind Icon11km/h
Wed. 5, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon6°/-9°
Humidity Icon73%
Wind Icon11km/h
Thu. 6, Nov.
moderate snowModerate snow
Temperature Icon6°/-10°
Humidity Icon70%
Wind Icon12km/h
Fri. 7, Nov.
patchy moderate snowPatchy moderate snow
Temperature Icon7°/-10°
Humidity Icon67%
Wind Icon14km/h
Sat. 8, Nov.
moderate snowModerate snow
Temperature Icon6°/-11°
Humidity Icon67%
Wind Icon12km/h
Sun. 9, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon6°/-10°
Humidity Icon69%
Wind Icon11km/h
Mon. 10, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon4°/-12°
Humidity Icon71%
Wind Icon12km/h
Wed. 12, Nov.
moderate snowModerate snow
Temperature Icon4°/-14°
Humidity Icon69%
Wind Icon11km/h
Thu. 13, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon4°/-12°
Humidity Icon70%
Wind Icon11km/h
Fri. 14, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon4°/-11°
Humidity Icon71%
Wind Icon12km/h
Sat. 15, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon5°/-12°
Humidity Icon70%
Wind Icon12km/h
Sun. 16, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-12°
Humidity Icon75%
Wind Icon14km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onTue. 21, Oct.

15.2°C

Low will be onMon. 27, Oct.

-13.9°C

HumidityHumidity

High will be onMon. 27, Oct.

82%

Low will be onSun. 19, Oct.

34%

Wind SpeedWind Speed

High will be onThu. 30, Oct.

21.6km/h

Low will be onWed. 22, Oct.

8.6km/h

PrecipitationPrecipitation

High will be onTue. 4, Nov.

3.7mm

Low will be onSun. 26, Oct.

0.07mm

Ultraviolet IndexUV

High will be onWed. 22, Oct.

2

Low will be onMon. 27, Oct.

1

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