I use to have sinus all the time
in the morning after I wake. It got so bad I'll just stick tissue
up my nose and let it absorb. However after I moved over to New
Zealand to work, the problem is gone. In my entire year and a half
stay there, my nose is clear. You might think cold air worsens the
condition, which is what I thought too.
Maybe the air is fresher there? 
