Cloud
Under about 30 percent cloud is worth setting up for. Low cloud is the one that blocks: high, thin cloud often lets bright targets through.
Your area tonight, hour by hour
Set your location to see it.
Cloud and wind from the Met Office model. Wind over about 30 km/h shakes the picture.
Live cloud map
The map is by Windy, from the European ECMWF model. Dark areas are clear sky. Press play on it to see the cloud move through the night. In red light it is tinted red; switch to Day for true colours.
Across the UK and Ireland, now
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Clear, under 25%Mostly clearPartly cloudyOvercast, 75% or more