Union, PA Weather Forecast
Washington County, Pennsylvania
Live radar, warnings and storm tracking for Union, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Union
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Union, PA at a glance
Union is home to about 5,416 people in Washington County, across 15 square miles. It ranks 493rd by population of 970 places in Pennsylvania with a forecast here. The nearest neighbour with its own forecast is South Park, 4 miles away.
- County
- Washington County
- Population
- 5,416 2023 est.
- Land area
- 15 sq mi
- People per sq mi
- 354
- Forecast point
- 40.2444°N, 79.9839°W
How well can the network see Union?
The nearest Doppler radar is KPBZ (Pittsburgh, PA), to the NNW. Its lowest scan passes about 1,300 ft above Union. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Union show up clearly. Union is closer to its radar than 80% of US cities.
The closest weather station is KAGC (Pittsburgh/Allegheny Cnty). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Union
- South Park, PA4 mi
- Forward, PA4 mi
- Nottingham, PA4 mi
- Jefferson Hills, PA4 mi
- Monongahela, PA5 mi
- Carroll, PA5 mi
- Peters, PA6 mi
- Pleasant Hills, PA6 mi
Elsewhere in Pennsylvania
PhiladelphiaPittsburghAllentownReadingErieUpper DarbyAll Pennsylvania forecasts →