Right now, we have seen slight improvements. Old town pittsburg where the air quality is at its worst and the rest of the area good to moderate. An air quality advisory in effect. You might need to limit your outdoor exposure. We have more information on nbcbayarea. Com and with garvin right now. We want to get back to our other top story. That commuter line crash in the east bay. Were in the east bay to tell us about the man who was injured and the aftereffects on commuting through that region. Reporter that train accident involving a tractor that was trying to cross these train tracks when that crash happened. I spoke to one man who heard the collision and came running out to help. There was a big cloud of smoke and ran over there to see if there was anybody in it. Reporter that smoke coming from an Amtrak Capital corridor train traveling southbound after it slammed into a tractor working to clear debris off the track. Your first thought is theres a human being in there with family.