How's the weather tonight?

Although astronomers do not study meteorology, some of them, especially observers, may pay close attention to the weather. Factors such as temperature, humidity, wind speed and direction, cloud coverage, have great influence on the observation activity. We have also known a lot about the significance of good seeing, low sky brightness and so on.

There are two major bases for optical astronomy in China - Beijing Xinglong Observatory of NAOC (Hebei Provience) and Lijiang Observatory of YNAO (Yunnan Provience). You can always open a tab on your browser to get a whole picture about the weather at the two stations when you’re at/before observation.

Xinglong Weather Local - External

Lijiang Weather Local - External