Astronomy starts on Earth.
Some of the most important planning signals are close to home: clouds, wind, humidity, moonlight, light pollution, fences, trees, roofs, and street lights. AstroGuide starts with your local context so the night is judged from the place where you actually observe.
- The Astronomic Forecast gives a multi-night view of key conditions.
- The hourly forecast shows how the night changes hour by hour.
- Observation windows group hours that share useful characteristics.
- Night ratings help you decide how to spend the evening.