Today | Weather | Sunday, January 18, 2026

Weather in Pittsburgh, Pennsylvania

10:24 AM
Now
Cloudy Weather
23° F
Feels Like 16°
Precipitation 20 %
Wind 8 mph
UV Index (0 - 11+) 1
Humidity 61 %
Today
Cloudy Weather
Day 27°
Night 19°
Precipitation 25 %
Wind 8 mph
UV Index (0 - 11+) 1

Pittsburgh Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 18, 2025)
Snowy Weather

Day

41°

Night

19°

Wind

7 mph

UV Index

1

Precipitation

100 %

Air Quality in Pittsburgh

NOW
26 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.49 µg/m³
PM10 1.88 µg/m³
O3 0.028 ppm
NO2 3.4 ppb
SO2 2 ppb
CO 0.15 ppm
NH3 0.23 µg/m³
NO 0.66 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)
PM2.51.49 µg/m³
PM101.88 µg/m³
O354.9 µg/m³
NO26.35 µg/m³
SO25.11 µg/m³
CO170.66 µg/m³
NH30.23 µg/m³
NO0.66 µg/m³