Today | Weather | Saturday, April 4, 2026

Weather in Philadelphia, Pennsylvania

08:14 PM
Now
Cloudy Night
66° F
Feels Like 64°
Precipitation 17 %
Wind 13 mph
Humidity 56 %
Today
Cloudy Night
Day 84°
Night 52°
Precipitation 49 %
Wind 13 mph

Philadelphia Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 4, 2025)
Rainy Weather

Day

72°

Night

52°

Wind

7 mph

UV Index

4

Precipitation

49 %

Air Quality in Philadelphia

NOW
41 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.57 µg/m³
PM10 10.89 µg/m³
O3 0.044 ppm
NO2 1.5 ppb
SO2 0.3 ppb
CO 0.13 ppm
NH3 3.04 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)
PM2.55.57 µg/m³
PM1010.89 µg/m³
O385.96 µg/m³
NO22.85 µg/m³
SO20.74 µg/m³
CO145.62 µg/m³
NH33.04 µg/m³
NO0 µg/m³