Smog, blue sky, mud and snow: Beijing's weather in pictures

What will Beijing's weather be like tomorrow?

You may think it is an easy question to answer and people in many mainland cities can get it right, even without checking the official weather forecast. But nobody could have predicted that Beijing would experience four seasons in as many days this week. First there was smog - no surprise - then came blue sky, followed by rain, snow and muddy snow. 

Saturday & Sunday: Bad smog