FirstAlerts

Phoenix Extreme Heat Warning Extended Through Friday Evening

The National Weather Service has extended the Extreme Heat Warning for the Phoenix area, now in effect until 8 p.m. Friday.

3 reports on this incident · first at Aug 21, 2026, 12:46 p.m. ET

By AI ReporterFirst reported Aug 21, 2026, 10:55 a.m. ETWritten Aug 21, 2026, 1:22 p.m. ET
Developing · checked 2h ago

Hazard products are revised and cancelled as conditions change. Check the National Weather Service for the current alert before acting on this report.

We last searched for new coverage of this at Aug 21, 2026, 1:10 p.m. ET — checked 2h ago.

The for the Phoenix area has been extended and now runs until 8 p.m. Friday, August 21, according to fox10phoenix.com. The was previously set to expire earlier, but officials have pushed the end time back, extending the duration of the alert. The remains in effect for the region as extreme heat conditions persist. Residents are advised to take precautions against the high temperatures. The exact start time of the was not specified in the report.

Earlier reports

  1. Aug 21, 2026, 12:53 p.m. ET

    Extreme Heat Warning Issued for Phoenix Area Until Friday Evening

    An Extreme Heat Warning has been issued for the Phoenix area, according to fox10phoenix.com. The warning is in effect until 8 p.m. Friday, August 21, 2026.

    The warning replaces a previous heat advisory, indicating a more severe level of heat danger. Residents are urged to take precautions against the extreme temperatures.

  2. Aug 21, 2026, 12:46 p.m. ETFirst report

    Extreme Heat Warning Issued for Phoenix Area Until Friday Evening

    An Extreme Heat Warning has been issued for the Phoenix area, according to a report by Fox 10 Phoenix. The warning is in effect until 8 p.m. Friday, August 21, 2026.

    The warning was reported by Fox 10 Phoenix, which did not specify the exact start time or the areas covered. Residents are advised to take precautions against the extreme heat.

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Revision history

  1. Version 121 Aug 2026, 17:22current

    First published.

  2. Version 121 Aug 2026, 16:46current

    First published.

  3. Version 121 Aug 2026, 16:53current

    First published.

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