As noted over the last few days, ozone has risen into the Unhealthy for Sensitive Groups (Orange) AQI levels in the south. An overlay of the AQI on MODIS's RGB shows that not much haze is seen in Dallas, Beaumont and Houston (covered in cumulus cloud) but the three cities are in the orange readings. There is a fire in Jefferson County, MS and covers Franklin County, MS, with smoke. The ozone readings from AIRNOWTech are shown for a number of stations across Texas and have reached 100 ppb today.
There is an indication in the MODIS RGB's that some dust has been elevated in West Texas, near Big Bend (left). The NFS haze cam in Big Bend National Park shows the dust but the visual range is still over 100 miles (right)
And the fire counts continue to be high in Kansas, presumably as farmers clear their fields for spring planting.
Posted by Ray Hoff at March 25, 2012 7:20 PM