For the first weekend edition in about a month, there are few major fires to focus on in the US. The Rim Fire is mostly contained and while there is some smoke affecting the San Joaquin Valley, the problem is significantly lessened from previous postings. In the US image below, there is a very clear view of much of the US. On the VIIRS aerosol optical depth retrieval, there is some elevated AOD in Texas and across the southern US coast. In Houston, today, DISCOVER AQ confirmed that the AOD was > 0.4 around the city but clouds were a significant impediment to satellite retrievals of that optical depth.
In California, on Saturday evening, ozone gets into the Unhealthy for Sensitive People and Unhealthy levels in California.
Update: September 15, 2013 20:30 CDT
Particles have ceased to be the major story in the US. There are moderate AQI readings for PM2.5 throughout the lower states, but no levels of concern for AQI for particulates. Ozone, however, is another matter. In the LA basin, O3 concentrations are pushing 120 ppb over many stations. The actually concentrations are shown in the right panel below.