Saint Charles, Missouri, United States Climate Change Severity

48
High
The current climate change severity in Saint Charles is High, with a 11.001% 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)

Saint Charles 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), Saint Charles temperature has changed by around +4.4%, 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
5021
-57.9%
cloudyCloudy
5747
-17.5%
rainyRainy
9762
-36.08%
snowySnowy
46
50%
mistyMisty
03
100%

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

Climate Change Indicators:

Over the past 15 years, Saint Charles has experienced measurable shifts in key climate parameters, contributing to the current severity score of 48 (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

48/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Saint Charles experienced significant changes:

Temperature change of

+0.6 °C

Variation in annual rainfall

+39.5 %

Change in average humidity

-0.5 %

PM2.5 levels surged by

+100 %

Heatwave changed by

+13.4 day(s)

Coldwave changed by

-0.06 day(s)

Wind speeds changed by

+0.6 km/h

These indicators show improvement in key parametes of climate, but Saint Charles 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.

Saint Charles Weather Forecast 30 Days (September - October 2025)
Saint Charles, Missouri, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Thu. 25, Sep.
partly cloudyPartly Cloudy
Temperature Icon26°/15°
Humidity Icon69%
Wind Icon16km/h
Fri. 26, Sep.
sunnySunny
Temperature Icon29°/17°
Humidity Icon60%
Wind Icon8km/h
Sat. 27, Sep.
sunnySunny
Temperature Icon30°/16°
Humidity Icon58%
Wind Icon8km/h
Sun. 28, Sep.
sunnySunny
Temperature Icon30°/18°
Humidity Icon42%
Wind Icon8km/h
Mon. 29, Sep.
sunnySunny
Temperature Icon31°/19°
Humidity Icon47%
Wind Icon9km/h
Tue. 30, Sep.
sunnySunny
Temperature Icon31°/19°
Humidity Icon41%
Wind Icon11km/h
Wed. 1, Oct.
partly cloudyPartly Cloudy
Temperature Icon31°/21°
Humidity Icon43%
Wind Icon12km/h
Thu. 2, Oct.
partly cloudyPartly Cloudy
Temperature Icon31°/21°
Humidity Icon46%
Wind Icon10km/h
Fri. 3, Oct.
partly cloudyPartly Cloudy
Temperature Icon31°/23°
Humidity Icon48%
Wind Icon12km/h
Sat. 4, Oct.
sunnySunny
Temperature Icon30°/21°
Humidity Icon43%
Wind Icon20km/h
Sun. 5, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon24°/15°
Humidity Icon54%
Wind Icon22km/h
Mon. 6, Oct.
sunnySunny
Temperature Icon21°/9°
Humidity Icon47%
Wind Icon19km/h
Tue. 7, Oct.
cloudyCloudy
Temperature Icon26°/13°
Humidity Icon34%
Wind Icon22km/h
Wed. 8, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/12°
Humidity Icon62%
Wind Icon14km/h
Thu. 9, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/13°
Humidity Icon67%
Wind Icon16km/h
Fri. 10, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/12°
Humidity Icon67%
Wind Icon17km/h
Sat. 11, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/11°
Humidity Icon67%
Wind Icon18km/h
Sun. 12, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/12°
Humidity Icon70%
Wind Icon17km/h
Mon. 13, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/11°
Humidity Icon66%
Wind Icon21km/h
Tue. 14, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/11°
Humidity Icon66%
Wind Icon21km/h
Wed. 15, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon19°/10°
Humidity Icon65%
Wind Icon21km/h
Thu. 16, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon19°/8°
Humidity Icon58%
Wind Icon19km/h
Fri. 17, Oct.
heavy rain at timesHeavy rain at times
Temperature Icon18°/9°
Humidity Icon58%
Wind Icon19km/h
Sat. 18, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/8°
Humidity Icon58%
Wind Icon18km/h
Sun. 19, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/8°
Humidity Icon63%
Wind Icon18km/h
Mon. 20, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/9°
Humidity Icon64%
Wind Icon21km/h
Wed. 22, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon21°/10°
Humidity Icon66%
Wind Icon19km/h
Thu. 23, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon21°/11°
Humidity Icon65%
Wind Icon19km/h
Fri. 24, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon19°/11°
Humidity Icon66%
Wind Icon20km/h
Sat. 25, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon19°/10°
Humidity Icon68%
Wind Icon21km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onFri. 3, Oct.

31.2°C

Low will be onSat. 18, Oct.

7.7°C

HumidityHumidity

High will be onSun. 12, Oct.

70%

Low will be onTue. 7, Oct.

34%

Wind SpeedWind Speed

High will be onTue. 7, Oct.

22.3km/h

Low will be onSat. 27, Sep.

7.6km/h

PrecipitationPrecipitation

High will be onWed. 22, Oct.

6.3mm

Low will be onThu. 16, Oct.

0.1mm

Ultraviolet IndexUV

High will be onWed. 1, Oct.

7

Low will be onMon. 13, Oct.

3

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