I took the friday off to go hiking.  It was a nearly perfect day to be out.  Sky was cloudless, temperatures were great, humidity was low, but visibility was horrible due to Canadian wildfires.  The air quality wasn't that bad though, I wasn't smelling any camp fire smell like we did in Albany a few weeks ago when the AQI was over 200.  Prediction was to be around 150... so strenuous outdoor activity was advised against, but that doesn't mean it really was a bad idea.