Keystone in the smog

This is a view of the back of the Keystone school building across the central open area taken from near our accommodation building. The pollution is bad today. The AQI is currently at 546 and has been steadily rising all morning. Anything over 300 is classed as hazardous. If you look at the very top of the picture you can just see the sun trying to poke through. It is probably a beautiful clear blue sky a few hundred metres above us!