Skip to main content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.


Weather and Climate

Cal Poly Pomona Weather Station "In March, 1989, the College of Agriculture and the California Irrigation Management Information System (CIMIS) established a weather station for monitoring the variables needed to manage the efficient use of irrigation water." 

National Weather Service Internet Weather Source United States Weather "Weather conditions for the past 24 hours, forecasts, watches, and warnings for the United States." Select a state. Includes international, select a county.

National Weather Service Western Region Headquarters 
Western US Weather, click on a map.

The Weather Channel ® ( Not just its measures, but news and more news about it. And the Weather Channel includes forecasts for foreign cities.

National Weather Service Earth's Seasons - Equinoxes and Solstices - 2005-2020 The dates and times EST. Go here to learn thetimes for the changes of Winter, Spring, Summer, and Fall. ® From the Weather Underground, Inc., a good presentation of the weather. A choice of national maps or check by state. Select the Astronomy link in the left-hand column and retrieve star charts for your ZIP code.

Western Regional Climate Center 
Both current and historical data; includes a climate summary for California

California Climate Data Archive

National Climatic Data Center

National Climatic Data Center World Data Center (WDC) for Meteorology, Asheville