Weather & Seeing is great for checking next week's weather, particularly the cloud coverage. It's not always 100% accurate, but really handy when you're planning a weekend trip to a dark site.
Use the slider above to check out the forecast for the next week.
Besides clouds, "Seeing" is also affected by temperature, humidity, air pressure and wind speeds and various altitudes. The tool below estimates just how good the seeing will be tonight. Look for times when the arcsec column is less than 1.00 for the best views.

When you're looking for the best views you want to get away from pesky city lights. Fortunately here in the South West there are plenty of dark spots not too far away. Light Pollution Map
Light Pollution Map