More than 50,000 seniors in the Tampa, Florida area have been urged to stay indoors as worsening air quality poses serious health risks.
The Air Quality Index is expected to reach orange levels, meaning conditions are unhealthy for sensitive groups, including older adults and those with respiratory issues.
Symptoms such as coughing, shortness of breath, and aggravated lung or heart conditions could occur.
This warning comes as part of a growing national trend, with nearly half of Americans now living in areas with failing air quality grades.
Officials advise using the AirNow app for real-time updates and limiting outdoor activity during high-risk periods.