They’ve been giving us updates on this weekly in the Fix-It-Friday Thread in the official Wyze News category.
Basically, you need to update your app to the new 2.38 app update that came out yesterday, and then you have to install firmware 1.0.13.2 or higher on the Air Purifier and then it is fixed. I have both of those and it is working great!
The firmware is still in Beta testing and I expect it will be released soon, but the new app is already available, so whenever you next update it, the app will be ready, and then when you see the firmware update for 1.0.13.2 or higher pushed to production (which I expect to happen any time now since it’s been working awesome for me on all of mine), the AQI will be registering with the correct AQI every hour. Here are examples from 3 of my Air Purifiers that have been working perfectly with this for about 2 weeks now: