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Hourly Weather | Today › Tuesday, January 27, 2026
Active Weather Warnings
Philadelphia, Pennsylvania
11 PM
Cloudy Night
16°
Feels Like -4°
0
Humidity: 54%
Wind: 15 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

11 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.3 µg/m³
  • PM10: 8.56 µg/m³
  • O3: 0.041 ppm
  • NO2: 6.8 ppb
  • SO2: 1.7 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Philadelphia

Moderate Expected Likely

Cold Weather Advisory

Cold Weather Advisory issued January 27 at 12:25PM EST until January 28 at 10:00AM EST by NWS Mount Holly NJ
Jan 27, 12:25 PM → Jan 28, 10:00 AM
WHAT: Very cold wind chills as low as 8 below.

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

WHEN: Until 10 AM EST Wednesday.

IMPACTS: The cold wind chills as low as 10 below zero could
result in hypothermia if precautions are not taken. Frostbite and
hypothermia will occur if unprotected skin is exposed to these
temperatures.
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Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Updated: Jan 27, 11:23 PM Source: NWS Alert