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Extreme Heat Warning Extended Through Late August for Desert Southwest

Forecasters extend the warning into next week, with heat index values up to 120 degrees.

4 reports on this incident · first at Aug 21, 2026, 6:55 p.m. ET

By AI ReporterFirst reported Aug 21, 2026, 6:43 p.m. ETUpdated Aug 22, 2026, 10:36 p.m. ET
An has been extended for the Desert Southwest, with conflicting end times reported by local outlets. reports the is extended until 8 p.m. on Friday, August 28, while reports it runs through Saturday, August 29. The covers the Desert Southwest, including the Tucson Metro Area, Western Pima County, and the Tohono O’odham Nation, according to kold.com and kyma.com. With the heat and higher humidity, heat index levels will be high, and "feels like" temperatures will be between 110 and 120 degrees, according to kyma.com. The same outlet also reported . reports that any storms that develop late Saturday or Sunday may contain brief heavy rainfall, frequent lightning, gusty winds, and blowing dust, especially in western Pima County. Officials urge residents to practice heat safety at all times, drink plenty of water, and avoid spending extended periods of time outside, according to kyma.com.

Earlier reports

  1. Aug 21, 2026, 7:12 p.m. ET

    Extreme Heat Warning Extended Through Aug. 28 for Desert Southwest

    An Extreme Heat Warning has been extended until 8 p.m. Friday, Aug. 28, for the Desert Southwest, according to KYMA KECY. The warning now runs longer than initially issued.

    With the heat and higher humidity for the weekend, heat index levels will also be high, and "feels like" temperatures will be between 110 and 120 degrees, KYMA KECY reported.

    Officials advise practicing heat safety at all times to prevent heat-related illnesses.

  2. Aug 21, 2026, 7:06 p.m. ET

    Extreme Heat Warning Extended Through Aug. 28 for Desert Southwest

    An Extreme Heat Warning has been extended until 8 p.m. on Friday, August 28, 2026, for the Desert Southwest, according to KYMA KECY. The warning, which was previously in effect, now covers a longer period due to dangerously hot conditions.

    With the heat and higher humidity expected over the weekend, heat index levels will be high, and "feels like" temperatures will range between 110 and 120 degrees, the outlet reported. Officials urge residents to practice heat safety at all times to prevent heat-related illnesses.

  3. Aug 21, 2026, 6:55 p.m. ETFirst report

    Extreme Heat Warning Extended Through Aug. 28 for Desert Southwest

    An Extreme Heat Warning has been extended until 8 p.m. Friday, Aug. 28, for the Desert Southwest, according to KYMA KECY. The warning, issued by the station's weather team, covers the region through that time due to dangerously hot conditions.

    With heat and higher humidity expected over the weekend, heat index levels will be high, making "feels like" temperatures range between 110 and 120 degrees, KYMA reported. The station urges residents to practice heat safety at all times to prevent heat-related illnesses.

    The situation remains developing, and further updates may follow.

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Sources

Revision history

  1. Version 323 Aug 2026, 02:36current

    Updated to reflect conflicting end times and impacts from multiple sources.

  2. Version 222 Aug 2026, 20:24

    Updated to reflect the extended warning date and added the second source's reporting on the warning's scope and duration.

  3. Version 121 Aug 2026, 23:12current

    First published.

  4. Version 121 Aug 2026, 23:00

    First published.

  5. Version 121 Aug 2026, 22:55current

    First published.

  6. Version 121 Aug 2026, 23:06current

    First published.

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