Current weather
Checking the latest reportMeasured conditions from the National Weather Service.
BEFORE YOU HEAD OUT
Fullerton weather, air quality and conditions
Plan around Fullerton’s forecast, nearby weather observations and current regional air reports.
Peak UV forecast
Checking the forecastThe EPA's daily peak forecast, with its own forecast date.
UV index guide ↗Weather alerts
Checking local alertsOfficial alerts covering the Fullerton area.
View the official forecast and alerts ↗Forecast
Forecast
Loading the National Weather Service forecast…
Official NWS forecast ↗Gas prices
View the gas guide for available station reports and their report times. Confirm pump prices and any cash or membership conditions with the station.
Air quality and roads
Current air-quality and highway information from the official services.
Check air quality and road closures before heading out. For pollen levels, consult a local allergy forecast.
Sunrise and sunset
Plan around sunrise, sunset and the golden-hour windows, calculated for Fullerton and shown in Pacific time.
Plan a golden hour →Conditions update throughout the day.
Rivers and streams
Latest readings from U.S. Geological Survey gauges near Fullerton. Provisional data, not a flood forecast; follow National Weather Service flood warnings.
Brea Creek below Brea Dam near Fullerton CA
0.6 miles from the city center
- Flow
- Gage height
- Water temperature
Fullerton Creek below Fullerton Dam near Brea CA
2.7 miles from the city center
- Flow
- Gage height
- Water temperature
Carbon Creek below Carbon Cyn Dam CA
5.4 miles from the city center
- Flow
- Gage height
- Water temperature
Santiago Creek at Santa Ana CA
8 miles from the city center
- Flow
- Gage height
- Water temperature
Where Fullerton's readings come from
- Forecast
- National Weather Service San Diego, CA office, forecast grid square 37,69. NWS San Diego, CA ↗
- Current conditions
- Fullerton Municipal Airport (KFUL). KFUL recent observations ↗
- UV index
- EPA daily UV forecast for ZIP code 92832. About the UV index ↗
- Air quality
- AirNow reporting area: North Orange CO, CA. AirNow ↗
- Weather alerts
- Active NWS alerts for the point at Fullerton's center, in Orange County. NWS alerts ↗
- Climate normals
- NOAA 1991–2020 normals at FULLERTON MUNI AP, CA, 2.9 miles away: August averages a high of 87°F and December a low of 46°F, with about 12 inches of precipitation a year. NOAA normals data ↗