Is this an accurate description of weather inversion?:
>>>"Mikus drove to where the cloud or haze was sighted immediately after the calls. "It was like a haze in the air, maybe 8 to 10 feet off the ground," Mikus said. "It almost looked like heat (rising)." The haze was barely visible, he said.
The haze lay over the township in 100-foot strips over a three- to four-mile wide area of the township. He said earlier reports that it was a cloud floating through the township were wrong.
The haze had a sweet, strong odor, he said. It did not smell like chlorine, he said."<<<
http://www.pittsburghlive.com/x/tribune-review/trib/pmupdate/s_205705.html
It's a definate possibility with the description of the haze. Like I said, inversions tend to trap haze/smog/smoke near the ground level because the air above is too warm to allow the pollutant to rise.
On a typical day with no inversion, clouds (fair weather cumulus) form due to rising warm air. When the wartm air rises, it condenses. If the air above is cold enough, showers or thunderstorms will form.
Inversions are most typical in regions that are low-lying and also surrounded by mountains. The LA metroplex is a great example but it can occur anywhere if conditions are right. Typically, a high pressure system (combined with little or no wind) causes inversions. They are most common during the summer in the US.