Chester, Illinois, United States Climate Change Severity

43
High
The current climate change severity in Chester is High, with a 10.2% improvement in the climate score compared to last 15 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to Aug. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Chester 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), Chester temperature has changed by around -0.3%, 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
6028
-53.3%
cloudyCloudy
6744
-34.3%
rainyRainy
10857
-47.2%
snowySnowy
45
25%
mistyMisty
012
100%

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

Climate Change Indicators:

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

Temperature change of

-0.05 °C

Variation in annual rainfall

+101.7 %

Change in average humidity

+0.8 %

PM2.5 levels surged by

-18.8 %

Heatwave changed by

+2 day(s)

Coldwave changed by

-1.4 day(s)

Wind speeds changed by

+1.7 km/h

These indicators show improvement in key parametes of climate, but Chester 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 Aug.

Chester Weather Forecast 30 Days (September - October 2025)
Chester, Illinois, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Tue. 30, Sep.
sunnySunny
Temperature Icon34°/16°
Humidity Icon53%
Wind Icon16km/h
Wed. 1, Oct.
partly cloudyPartly Cloudy
Temperature Icon30°/15°
Humidity Icon63%
Wind Icon13km/h
Thu. 2, Oct.
partly cloudyPartly Cloudy
Temperature Icon32°/16°
Humidity Icon66%
Wind Icon16km/h
Fri. 3, Oct.
partly cloudyPartly Cloudy
Temperature Icon31°/19°
Humidity Icon61%
Wind Icon17km/h
Sat. 4, Oct.
sunnySunny
Temperature Icon30°/17°
Humidity Icon52%
Wind Icon19km/h
Sun. 5, Oct.
sunnySunny
Temperature Icon30°/15°
Humidity Icon54%
Wind Icon19km/h
Mon. 6, Oct.
sunnySunny
Temperature Icon28°/16°
Humidity Icon71%
Wind Icon23km/h
Tue. 7, Oct.
partly cloudyPartly Cloudy
Temperature Icon30°/18°
Humidity Icon71%
Wind Icon13km/h
Wed. 8, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon33°/19°
Humidity Icon66%
Wind Icon17km/h
Thu. 9, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon26°/16°
Humidity Icon83%
Wind Icon17km/h
Fri. 10, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon34°/19°
Humidity Icon65%
Wind Icon25km/h
Sat. 11, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon17°/15°
Humidity Icon89%
Wind Icon14km/h
Sun. 12, Oct.
cloudyCloudy
Temperature Icon21°/11°
Humidity Icon67%
Wind Icon10km/h
Mon. 13, Oct.
partly cloudyPartly Cloudy
Temperature Icon19°/9°
Humidity Icon59%
Wind Icon24km/h
Tue. 14, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/11°
Humidity Icon67%
Wind Icon21km/h
Wed. 15, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon19°/10°
Humidity Icon67%
Wind Icon21km/h
Thu. 16, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon19°/8°
Humidity Icon59%
Wind Icon19km/h
Fri. 17, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/8°
Humidity Icon59%
Wind Icon19km/h
Sat. 18, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon19°/7°
Humidity Icon61%
Wind Icon19km/h
Sun. 19, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/8°
Humidity Icon65%
Wind Icon18km/h
Mon. 20, Oct.
heavy rain at timesHeavy rain at times
Temperature Icon20°/8°
Humidity Icon66%
Wind Icon21km/h
Wed. 22, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon21°/9°
Humidity Icon66%
Wind Icon21km/h
Thu. 23, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon21°/10°
Humidity Icon66%
Wind Icon20km/h
Fri. 24, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon19°/11°
Humidity Icon66%
Wind Icon21km/h
Sat. 25, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/10°
Humidity Icon68%
Wind Icon21km/h
Sun. 26, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/9°
Humidity Icon70%
Wind Icon21km/h
Mon. 27, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/8°
Humidity Icon70%
Wind Icon19km/h
Tue. 28, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/7°
Humidity Icon72%
Wind Icon18km/h
Wed. 29, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/7°
Humidity Icon71%
Wind Icon21km/h
Thu. 30, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/8°
Humidity Icon73%
Wind Icon22km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onFri. 10, Oct.

34.1°C

Low will be onWed. 29, Oct.

7.1°C

HumidityHumidity

High will be onSat. 11, Oct.

89%

Low will be onSat. 4, Oct.

52%

Wind SpeedWind Speed

High will be onFri. 10, Oct.

25.2km/h

Low will be onSun. 12, Oct.

10.1km/h

PrecipitationPrecipitation

High will be onSun. 26, Oct.

9.2mm

Low will be onMon. 13, Oct.

0.05mm

Ultraviolet IndexUV

High will be onSat. 4, Oct.

6

Low will be onWed. 15, Oct.

3

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