Philadelphia, Pennsylvania, United States Climate Change Severity

43
High
The current climate change severity in Philadelphia is High, with a -15.1% 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 Jul. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

Philadelphia 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), Philadelphia temperature has changed by around +3.09%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
3829
-23.6%
cloudyCloudy
6137
-39.3%
rainyRainy
8154
-33.3%
snowySnowy
54
-20%
mistyMisty
06
100%

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

Climate Change Indicators:

Over the past 15 years, Philadelphia 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, Philadelphia experienced significant changes:

Temperature change of

+0.3 °C

Variation in annual rainfall

+111.9 %

Change in average humidity

+1.7 %

PM2.5 levels surged by

+100 %

Heatwave changed by

+2.6 day(s)

Coldwave changed by

-6.7 day(s)

Wind speeds changed by

+0.4 km/h

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

Philadelphia Weather Forecast 30 Days (August - September 2025)
Philadelphia, Pennsylvania, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Fri. 8, Aug.
partly cloudyPartly Cloudy
Temperature Icon28°/19°
Humidity Icon70%
Wind Icon16km/h
Sat. 9, Aug.
sunnySunny
Temperature Icon30°/17°
Humidity Icon63%
Wind Icon12km/h
Sun. 10, Aug.
sunnySunny
Temperature Icon33°/19°
Humidity Icon64%
Wind Icon14km/h
Mon. 11, Aug.
sunnySunny
Temperature Icon33°/20°
Humidity Icon50%
Wind Icon14km/h
Tue. 12, Aug.
sunnySunny
Temperature Icon33°/20°
Humidity Icon48%
Wind Icon14km/h
Wed. 13, Aug.
sunnySunny
Temperature Icon34°/21°
Humidity Icon51%
Wind Icon15km/h
Thu. 14, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon29°/22°
Humidity Icon76%
Wind Icon11km/h
Fri. 15, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon32°/22°
Humidity Icon76%
Wind Icon7km/h
Sat. 16, Aug.
sunnySunny
Temperature Icon36°/23°
Humidity Icon62%
Wind Icon11km/h
Sun. 17, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon33°/24°
Humidity Icon67%
Wind Icon10km/h
Mon. 18, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon35°/23°
Humidity Icon69%
Wind Icon16km/h
Tue. 19, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon35°/24°
Humidity Icon67%
Wind Icon16km/h
Wed. 20, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon32°/24°
Humidity Icon74%
Wind Icon17km/h
Thu. 21, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon35°/24°
Humidity Icon69%
Wind Icon17km/h
Fri. 22, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/21°
Humidity Icon74%
Wind Icon14km/h
Sat. 23, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/19°
Humidity Icon68%
Wind Icon13km/h
Sun. 24, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/19°
Humidity Icon67%
Wind Icon13km/h
Mon. 25, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/20°
Humidity Icon69%
Wind Icon14km/h
Tue. 26, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon29°/20°
Humidity Icon68%
Wind Icon15km/h
Wed. 27, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon30°/20°
Humidity Icon69%
Wind Icon14km/h
Thu. 28, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/20°
Humidity Icon73%
Wind Icon15km/h
Fri. 29, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/20°
Humidity Icon73%
Wind Icon13km/h
Sat. 30, Aug.
moderate rain at timesModerate rain at times
Temperature Icon30°/20°
Humidity Icon68%
Wind Icon14km/h
Sun. 31, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/20°
Humidity Icon68%
Wind Icon14km/h
Mon. 1, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/20°
Humidity Icon70%
Wind Icon14km/h
Tue. 2, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/19°
Humidity Icon73%
Wind Icon14km/h
Wed. 3, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon29°/20°
Humidity Icon71%
Wind Icon14km/h
Thu. 4, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon29°/20°
Humidity Icon68%
Wind Icon15km/h
Fri. 5, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/20°
Humidity Icon70%
Wind Icon14km/h
Sat. 6, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon27°/19°
Humidity Icon72%
Wind Icon15km/h
Sun. 7, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon27°/18°
Humidity Icon73%
Wind Icon15km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSat. 16, Aug.

35.8°C

Low will be onSat. 9, Aug.

16.9°C

HumidityHumidity

High will be onThu. 14, Aug.

76%

Low will be onTue. 12, Aug.

48%

Wind SpeedWind Speed

High will be onWed. 20, Aug.

17.3km/h

Low will be onFri. 15, Aug.

6.5km/h

PrecipitationPrecipitation

High will be onFri. 22, Aug.

9mm

Low will be onWed. 20, Aug.

0.2mm

Ultraviolet IndexUV

High will be onWed. 13, Aug.

7

Low will be onTue. 12, Aug.

0.1

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