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Today | Weather | Sunday, December 14, 2025
Active Weather Warnings

Weather in Philadelphia, Pennsylvania

08:10 AM
Now
Snowy Weather
30° F
Feels Like 18°
Precipitation 61 %
Wind 12 mph
UV Index (0 - 11+) 0
Humidity 89 %
Today
Snowy Weather
Day 34°
Night 16°
Precipitation 80 %
Wind 14 mph
UV Index (0 - 11+) 1

Philadelphia Weather Forecast Updated

45 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 14, 2024)
Cloudy Night

Day

37°

Night

25°

Wind

6 mph

Precipitation

0 %

Air Quality in Philadelphia

NOW
22 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2 µg/m³
PM10 2.27 µg/m³
O3 0.024 ppm
NO2 4.2 ppb
SO2 0.4 ppb
CO 0.18 ppm
NH3 0.77 µg/m³
NO 0.01 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 2 µg/m³
PM10 – 2.27 µg/m³
O3 – 47.38 µg/m³
NO2 – 7.94 µg/m³
SO2 – 1.14 µg/m³
CO – 207.16 µg/m³
NH3 – 0.77 µg/m³
NO – 0.01 µg/m³
View Hourly Air Quality Forecast

Weather Alerts and Warnings for Philadelphia

Severe Expected Likely

Winter Storm Warning

Winter Storm Warning issued December 13 at 4:31PM EST until December 14 at 1:00PM EST by NWS Mount Holly NJ
Dec 13, 7:00 PM → Dec 14, 1:00 PM
WHAT: Heavy snow expected. Total snow accumulations between 3 and
5 inches.

WHERE: In Pennsylvania, Philadelphia, Delaware, Eastern Chester,
Eastern Montgomery and Lower Bucks Counties. In New Jersey,
Gloucester, Camden, and Northwestern Burlington Counties.

WHEN: Until 1 PM EST Sunday.

IMPACTS: Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Plan on slippery road
conditions.
+ Read More
If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
Updated: Dec 13, 10:53 PM Source: NWS Alert
Moderate Expected Likely

Winter Weather Advisory

Winter Weather Advisory issued December 13 at 12:56AM EST until December 14 at 1:00PM EST by NWS Mount Holly NJ
Dec 13, 7:00 PM → Dec 14, 1:00 PM
WHAT: Snow expected. Total snow accumulations between 3 and 5
inches.

WHERE: Portions of northern Delaware, northeast Maryland,
central, northern, and southern New Jersey, and southeast
Pennsylvania.

WHEN: From 7 PM this evening to 1 PM EST Sunday.

IMPACTS: Plan on slippery road conditions.
+ Read More
Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
Updated: Dec 13, 12:33 PM Source: NWS Alert