PHILADELPHIA (CBS) — An excessive heat advisory is now in effect for Tuesday, June 22 for the Philadelphia area. The advisory will be in effect from 11 a.m. until 6 p.m.

The public is being urged to use common sense and to avoid over exertion in the heat. Philadelphia’s Heatline and other special heat response programs will not be launched as conditions are not expected to be severe enough or last long enough to require their use.

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Individuals that are at the most risk during extreme heat include older people, those with chronic medical conditions, those who take certain regular medications, those with mental illnesses, pregnant women, small children, those who work in high heat and anyone who takes part in strenuous activity.

The city is urging citizens to follow the following guidelines to avoid heat-related  illness:

Avoid, as much as possible, working or playing in the hot sun or other hot areas.

If you must be out in the sun, wear a head covering. A wide-brimmed hat or visor will not only protect your head from intense rays of the sun; it will also provide a shield for your eyes.

Use air conditioners and fans. Open windows to release trapped hot air.

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People taking regular medication should consult with their physician. Some medications can cause an adverse reaction in hot weather.

Wear lightweight clothing.

Drink plenty of non-alcoholic liquids, warm or cool. Because the body loses fluids in the heat, drinking lots of liquids helps to avoid dehydration.

Maintain a normal diet.

Shower or bathe in water that is near skin temperature.

Do not leave older people, children, or pets, alone in cars.

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Click here to get the latest information on the heat in the forecast.