Today | Weather | Saturday, February 21, 2026

Weather in Philadelphia, Pennsylvania

10:25 PM
Now
Cloudy Night
41° F
Feels Like 39°
Precipitation 7 %
Wind 5 mph
Humidity 74 %
Today
Snowy Weather
Day 48°
Night 36°
Precipitation 55 %
Wind 5 mph

Philadelphia Weather Forecast Updated

50 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 21, 2025)
Cloudy Weather

Day

37°

Night

19°

Wind

17 mph

UV Index

4

Precipitation

0 %

Air Quality in Philadelphia

NOW
36 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 8.57 µg/m³
PM10 16.29 µg/m³
O3 0.023 ppm
NO2 8.1 ppb
SO2 0.3 ppb
CO 0.25 ppm
NH3 3.78 µg/m³
NO 0 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)
PM2.58.57 µg/m³
PM1016.29 µg/m³
O345.58 µg/m³
NO215.21 µg/m³
SO20.77 µg/m³
CO289.33 µg/m³
NH33.78 µg/m³
NO0 µg/m³