Chicago, Illinois, United States Climate Change Severity

43
High
The current climate change severity in Chicago is High, with a 19.4% improvement in the climate score compared to last 16 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to Jul. (Historical Vs 2026) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

Chicago 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), Chicago temperature has changed by around +11.9%, 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
3073
143.3%
cloudyCloudy
5319
-64.1%
rainyRainy
8050
-37.5%
snowySnowy
74
-42.8%
mistyMisty
02
100%

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

Climate Change Indicators:

Over the past 16 years, Chicago has experienced measurable shifts in key climate parameters, contributing to the current severity score of 43 (within the High severity category). While the score remains High, certain factors have improved over time. Here’s a breakdown of the specific changes observed:

Severity Score

43/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2026, Chicago experienced significant changes:

Temperature change of

+1.08 °C

Variation in annual rainfall

+4.75 %

Change in average humidity

-1.98 %

PM2.5 levels surged by

-7.82 %

Heatwave changed by

-2 Days

Coldwave changed by

-10 Days

Wind speeds changed by

-1.45 km/h

These indicators show improvement in key parametes of climate, but Chicago remains in the High severity category. Continuous focus on climate resilience is necessary to avoid further worsening and ensure sustainability.

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

Chicago Weather Forecast 30 Days (August - September 2026)
Chicago, Illinois, United States

Condition
Temperature IconTemperature
Humidity IconHumi.
Wind IconWind Speed
Mon. 10, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon27°/22°
Humidity Icon92%
Wind Icon16.6km/h
Tue. 11, Aug.
sunnySunny
Temperature Icon27°/21°
Humidity Icon86%
Wind Icon20.2km/h
Wed. 12, Aug.
sunnySunny
Temperature Icon27°/22°
Humidity Icon80%
Wind Icon11.9km/h
Thu. 13, Aug.
sunnySunny
Temperature Icon23°/20°
Humidity Icon69%
Wind Icon17.3km/h
Fri. 14, Aug.
sunnySunny
Temperature Icon24°/19°
Humidity Icon67%
Wind Icon18.7km/h
Sat. 15, Aug.
partly cloudyPartly Cloudy
Temperature Icon25°/20°
Humidity Icon55%
Wind Icon16.6km/h
Sun. 16, Aug.
overcastOvercast
Temperature Icon25°/20°
Humidity Icon69%
Wind Icon12.6km/h
Mon. 17, Aug.
sunnySunny
Temperature Icon27°/20°
Humidity Icon74%
Wind Icon12.2km/h
Tue. 18, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon26°/20°
Humidity Icon76%
Wind Icon17.4km/h
Wed. 19, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon26°/20°
Humidity Icon73%
Wind Icon18.6km/h
Thu. 20, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon26°/20°
Humidity Icon74%
Wind Icon19.6km/h
Fri. 21, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/19°
Humidity Icon76%
Wind Icon18.3km/h
Sat. 22, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/19°
Humidity Icon73%
Wind Icon18.4km/h
Sun. 23, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon26°/19°
Humidity Icon71%
Wind Icon18.8km/h
Mon. 24, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon27°/19°
Humidity Icon72%
Wind Icon21km/h
Tue. 25, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon26°/19°
Humidity Icon74%
Wind Icon20km/h
Wed. 26, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon26°/20°
Humidity Icon77%
Wind Icon18.7km/h
Thu. 27, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon26°/20°
Humidity Icon74%
Wind Icon20.1km/h
Fri. 28, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/20°
Humidity Icon75%
Wind Icon20.3km/h
Sat. 29, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon26°/19°
Humidity Icon76%
Wind Icon19.5km/h
Sun. 30, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon25°/19°
Humidity Icon75%
Wind Icon18.4km/h
Mon. 31, Aug.
heavy rain at timesHeavy Rain
Temperature Icon25°/19°
Humidity Icon72%
Wind Icon19.1km/h
Tue. 1, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon25°/19°
Humidity Icon75%
Wind Icon20.9km/h
Wed. 2, Sep.
heavy rain at timesHeavy Rain
Temperature Icon26°/19°
Humidity Icon70%
Wind Icon18.4km/h
Thu. 3, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon26°/19°
Humidity Icon70%
Wind Icon21.3km/h
Fri. 4, Sep.
heavy rain at timesHeavy Rain
Temperature Icon25°/18°
Humidity Icon71%
Wind Icon20.7km/h
Sat. 5, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon25°/18°
Humidity Icon71%
Wind Icon22.3km/h
Sun. 6, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon24°/18°
Humidity Icon71%
Wind Icon22.6km/h
Mon. 7, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon23°/17°
Humidity Icon70%
Wind Icon24km/h
Tue. 8, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon22°/16°
Humidity Icon70%
Wind Icon21.7km/h
Wed. 9, Sep.
moderate rain at timesRain
Temperature Icon23°/17°
Humidity Icon72%
Wind Icon19.8km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onMon. 10, Aug.

27°C

Low will be onTue. 8, Sep.

16°C

HumidityHumidity

High will be onMon. 10, Aug.

92%

Low will be onSat. 15, Aug.

55%

Wind SpeedWind Speed

High will be onMon. 7, Sep.

24km/h

Low will be onWed. 12, Aug.

11.9km/h

PrecipitationPrecipitation

High will be onMon. 10, Aug.

9.5mm

Low will be onSun. 16, Aug.

0.04mm

Ultraviolet IndexUV

High will be onSat. 15, Aug.

7

Low will be onTue. 8, Sep.

4

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