MONTGOMERY COUNTY, Pa. (CBS) – The Montgomery County Commissioner’s office has issued a Hot Weather Health Warning, or “Code Red,” for the county beginning at noon and ending at 8 p.m. on Tuesday.

A Code Red is issued when the heat index is expected to hit 100 degrees or more.

Since these conditions have been associated with an increase in deaths, the county is asking that very young children, the elderly and those with chronic medical conditions or taking certain medications take precautions. These include drinking plenty of water, wearing lightweight clothing, avoiding the outdoors at the hottest times of day and staying in air condition or shade as much as possible.

Friends, relatives and neighbors of those at risk should check on them regularly.

For more on hot weather and heat exhaustion/stroke, visit the CDC’s website.