Observing Forecast

Three Day Observing Forecast

The "Clear Sky Clock" is a handy new standard for predicting local weather for astronomical observing in far more detail than conventional weather forecasts.

Peterborough’s Clear Sky Clock provides information on current and future cloud cover, but also looks at the clarity and stability of the sky. It also takes into consideration when the moon will be out and what phase it is in.

Current Lunar Phase
Last Quarter
Last Quarter
Peterborough, Ontario, Canada
MoonriseNo moonrise
Moonset2:06 PM
Dawn5:13 AM
Dusk6:39 PM
Illumination41%
Calculated locally by Celestial Web Development for 2026-11-02. Times use America/New_York. Dawn/Dusk are astronomical twilight. Results may vary from other services due to calculation and horizon assumptions.