This week’s heat reached the officially dangerous stage today, and conditions could be slightly worse Thursday.
Health officials issued an Orange Ozone Action Day warning for Thursday in Calhoun, Fairfield, Kershaw, Lexington, Newberry, Richland, Saluda and Sumter counties. That means ozone levels will be high enough that active children and adults and people with respiratory diseases should limit outdoor exertion.
Ozone forms during hot, dry, stagnant weather conditions. Emissions from vehicles contribute to ozone, so everyone can help lower levels by limiting vehicle trips and carpooling.
While the ozone levels weren’t quite as high today, the National Weather Service issued a heat advisory for most of the state. Another heat advisory – warning that temperatures and humidity are high enough to cause heat illnesses – is in effect for Thursday for much of the state.
After a brief respite from the heat last week, Columbia’s official temperature hit 100 today and on Tuesday. The National Weather Service forecast high for the next three days is near 100 with the possibility of afternoon thunderstorms.