Stargazing Guides

Is Tonight Good for Stargazing?

Find out if tonight is good for stargazing at your location. Check cloud cover, moon phase, wind, humidity, and darkness window — scored 0–100.

What Planets Are Visible Tonight?

See which planets are visible tonight from your location. Real-time altitude calculations for Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune.

Stargazing Forecast

Free stargazing forecast for any location worldwide. Cloud cover, moon phase, wind, humidity, and darkness scored 0–100 with a best viewing window.

Aurora Forecast — Northern & Southern Lights

Aurora forecast with Kp index, NOAA Ovation probability, and cloud cover. Check if the northern lights are visible tonight from your location.

How the Stargazing Score Works

How Clear Skys calculates the stargazing score: cloud layers, wind, humidity, rain, moon penalty, observer profiles, and custom user-built scoring explained.

Light Pollution & the Bortle Scale

Understand the Bortle scale from 1 to 9 and what you can see at each level. Learn how light pollution affects stargazing and how to find darker skies near you.

Why the Sky Isn't Dark in Summer

Why summer skies never get truly dark in the UK and northern Europe. What astronomical twilight means, what you can still observe, and when darkness returns.

Best Stargazing Locations in the UK

The best places to stargaze in the UK, from certified Dark Sky Parks to hidden local spots. Bortle ratings, what to see, and live forecasts for each location.

ISS & Satellite Watching Guide

How to see the ISS and bright satellites tonight. When they're visible, how passes work, what to look for, and why summer is the best season.

Best Time to Stargaze Tonight

Find the best time to stargaze tonight. When darkness starts, when the moon sets, and how to find your best viewing window — explained simply.

Meteor Shower Calendar 2026

Complete 2026 meteor shower calendar with peak dates, ZHR rates, moon conditions, and viewing tips. Perseids, Geminids, and 7 more showers.