Update, 3:50 p.m. April 27: The advisory issued yesterday has been repeated today, April 27. It goes into effect at 4 p.m. and is valid through dusk.

Earlier:

Elevated levels of ozone in the atmosphere have caused the Environmental Protection Commission of Hillsborough County to issue an air quality advisory for today.

“Individuals with pre-existing respiratory ailments, the elderly, or the very young may want to take this into consideration when planning any outside activities,” the agency wrote in a media release.

According to the county, today’s level of the pollutant ozone is particularly high. The Air Quality Index is expected to reach a range of 101 to 150. This is considered moderate, but unhealthy for some people, such as the sick, elderly and young.

The advisory goes into effect at 3 p.m. today and will last through dusk. Early indications show that tomorrow’s levels will likely be similar.

For current air quality information, visit the EPC’s website. More information about pollutants, such as ozone, are found on the site, as well.