Today | Weather | Sunday, March 15, 2026

Weather in Philadelphia, Pennsylvania

06:01 PM
Now
Cloudy Weather
50° F
Feels Like 43°
Precipitation 0 %
Wind 14 mph
UV Index (0 - 11+) 0
Humidity 60 %
Today
Cloudy Weather
Day 50°
Night 48°
Precipitation 0 %
Wind 12 mph
UV Index (0 - 11+) 1

Philadelphia Weather Forecast Updated

26 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 15, 2025)
Cloudy Weather

Day

57°

Night

52°

Wind

6 mph

UV Index

1

Precipitation

25 %

Air Quality in Philadelphia

NOW
73 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.83 µg/m³
PM10 11.21 µg/m³
O3 0.061 ppm
NO2 0.6 ppb
SO2 0.3 ppb
CO 0.13 ppm
NH3 0.7 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.53.83 µg/m³
PM1011.21 µg/m³
O3120.51 µg/m³
NO21.09 µg/m³
SO20.75 µg/m³
CO146.37 µg/m³
NH30.7 µg/m³
NO0.01 µg/m³