PHILADELPHIA (CBS) – Excessive high temperatures in the Philadelphia area have prompted officials to issue an air quality alert Monday.

Temperatures in the high eighties and nineties this week marks the fourth heat wave this year, causing the Delaware Valley Regional Planning Commission to issue a Code Orange air quality alert.

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An air quality alert means the air pollution concentration may be unhealthy for sensitive groups of people including the elderly, asthmatics or people suffering from heart or other lung diseases.

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Officials urge people to avoid strenuous activity or exercise outdoors, especially during times when the temperature is at its peak.

For more information on helpful heat resources for the Pennsylvania, Delaware and New Jersey region, CLICK HERE.

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