I doubt that would affect Wi-Fi, but what does affect it (at least 2.4 GHz frequencies) is microwaves. They operate at the same frequency and interfere with the router's output waves.
My wife refused to believe me until I had her run a speed test and watch the signal drop when I started up the microwave, then rise again when I turned it off.
No. RF is not affected directly by air movement. However, it can be indirectly affected, by moving the antennae positioning, moving other objects in the way, or causing rain or snow to block the path of the RF. Source: Network Engineer for 10 years