The observed Heat Index for towns around Middle Tennessee this afternoon from the National Weather Service’s Automated Stations
Actual temperatures during the afternoon, and temps were still rising.
Here’s the culprit for our heat wave. High pressure in the upper levels creates sinking air which is compressed and heats up. This sinking air also does not allow for dispersion of pollutants.
Ozone is expected to be in the moderate range today and Monday. Ozone is created by sunlight and heat combining with pollutants. Ozone is good in the upper atmosphere where it shields us from ultra-violet light. However, here at the surface, it is bad for us to breathe into our lungs. People who have sensitive respiratory systems should stay inside or reduce outdoor activities.
