One thing I will add is that AQI is just a contrived number made up of a few somewhat arbitrarily weighted components. Who really knows whether smoke (through PM25) should be weighted as it is versus ozone. AQI is typically used for urban emissions like car emissions or factory emissions... I don't know how one can really say X amount of PM2.5 equivalent of Y amount of ozone, but that is essentially what AQI is doing.
https://en.m.wikipedia.org/wiki/Air_quality_indexI don't think one can truly estimate air quality danger with one number. AQI components appear to be normalized by EPA defined 'breakpoints', but damage to the lungs is not going to be linear with time/exertion level and will vary with all sorts of other factors that vary between people.
That said, Larry Scott does live and work in the Bay Area. He looks to be in good shape and takes care of himself, so If he can run 10km tomorrow afternoon, I say play the game no problem. If he starts to hack up a lung, then it's gotta be called off.
If it looks like the above photos on Friday, I'd guess there will be lasting effects on some players, and others will be fine. It's not like Cal is going to be making any significant money on this game (outside of TV). Another poster has stated 22k seats have been sold, and I'd guess fewer show up if it smells like a fireplace. The question is how much time is needed and what kind of negotiations would be required to move to a smaller D1 stadium even as far away as SLO or Reno. Give ESPN what they want, give WSU a game so it doesn't afffect the P12 north standings and move on. Who cares if we give up the most unpleasant home game ever?