Chapel Hill Astronomical and Observational Society
observing conditions Print E-mail


Should you get the telescope out tonight?  How long do you have before clouds roll in?  What will the seeing be like?

detailed cloud forecast

clear dark sky chart 


8 day

Ebenezer Church Recreation Area
Jordan Lake State Park 

Apex, NC

Morehead Planetarium 
Chapel Hill, NC
Museum of Life and Science 
Durham, NC
Little River Regional Park

Rougemont, NC
Medoc Mountain State Park
Hollister, NC
Staunton River State Park
Scottsburg, VA
NC Museum of Natural Sciences
Raleigh, NC
  • The clear dark sky chart summarizes cloudcover and transparancy for the next up to 20 hours.  Lighter colors are bad, darker are good for observing.
  • National Weather Service graphs cloudcover, precip, wind, and other predictions.  These are the most specific forecasts, targeted to a 8 km2 area
  • WeatherSpark presents that same data in a dashboard format that some find easier to read and scroll ahead for forecasted conditions. Slightly less specific, targeted at city level.

Lunar phase

Star Maps

Click for Raleigh-Durham International, North Carolina Forecast

Solar conditions

Sunspots courtesy of NASA.

Aurora courtesy of NOAA

Today's Solar X-rays: Status

Geomagnetic Field: Status

Solar weather courtesy of NOAA

Click on the icons for additional info or enlarged images.