These updates include one about Kona side air quality. In that one, a person mentions Purpleair.com, which some may find useful.
Honestly, I generally have paid no attention to what is being said about the vog (volcanic fog) situation over here. I have never felt strongly affected by any vog situation over here, although I know some are more strongly affected than others. Also it depends on the elevation. My situation is 1500 feet up, whereas others I know ate sea level are feeling the vog more strongly.
[Kp note: I noted a few familiar faces in this one!]