Phoenix, Arizona
Regional Weather Alerts
| Alert: | Extreme Heat Watch |
| Area(s): | Parker Valley; Kofa; Yuma; Central La Paz; Gila River Valley; Imperial County Southwest; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley |
| Effective: | 2026-07-05 @ 2:15 am -> 2026-07-05 @ 5:00 pm |
| Onset: | 2026-07-07 @ 12:00 pm -> 2026-07-09 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Future |
| Issued By: | NWS Phoenix AZ on 2026-07-05 @ 2:15 am |
| Headline: | Extreme Heat Watch issued July 5 at 12:15AM MST until July 9 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...Dangerously hot conditions possible. Afternoon temperatures 109 to 117. Major Heat Risk. * WHERE...Portions of southwest Arizona and southeast and southern California. * WHEN...From Tuesday morning through Thursday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. |
| Alert: | Extreme Heat Watch |
| Area(s): | Northwest Valley; Buckeye/Avondale; Deer Valley; Central Phoenix; North Phoenix/Glendale; Scottsdale/Paradise Valley; East Valley; South Mountain/Ahwatukee; Southeast Valley/Queen Creek |
| Effective: | 2026-07-05 @ 2:15 am -> 2026-07-05 @ 5:00 pm |
| Onset: | 2026-07-07 @ 12:00 pm -> 2026-07-09 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Future |
| Issued By: | NWS Phoenix AZ on 2026-07-05 @ 2:15 am |
| Headline: | Extreme Heat Watch issued July 5 at 12:15AM MST until July 9 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...Dangerously hot conditions possible. Afternoon temperatures 111 to 116. Major Heat Risk. * WHERE...Buckeye/Avondale, Central Phoenix, Deer Valley, East Valley, North Phoenix/Glendale, Northwest Valley, Scottsdale/Paradise Valley, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek. * WHEN...From Tuesday morning through Thursday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water, and more. http://www.maricopa.gov/heat |
| Alert: | Extreme Heat Watch |
| Area(s): | Aguila Valley; Tonopah Desert; Gila Bend; Cave Creek/New River; New River Mesa; Rio Verde/Salt River; Fountain Hills/East Mesa; Northwest Pinal County; West Pinal County; Apache Junction/Gold Canyon; Sonoran Desert Natl Monument; San Carlos; Globe/Miami |
| Effective: | 2026-07-05 @ 2:15 am -> 2026-07-05 @ 5:00 pm |
| Onset: | 2026-07-07 @ 12:00 pm -> 2026-07-09 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Future |
| Issued By: | NWS Phoenix AZ on 2026-07-05 @ 2:15 am |
| Headline: | Extreme Heat Watch issued July 5 at 12:15AM MST until July 9 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...Dangerously hot conditions possible. Afternoon temperatures 109 to 115. Major Heat Risk. * WHERE...A portion of south central Arizona. * WHEN...From Tuesday morning through Thursday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water, and more. http://www.maricopa.gov/heat |
| Alert: | Extreme Heat Watch |
| Area(s): | Grand Canyon Country |
| Effective: | 2026-07-04 @ 11:44 pm -> 2026-07-06 @ 1:00 am |
| Onset: | 2026-07-07 @ 12:00 pm -> 2026-07-11 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Future |
| Issued By: | NWS Flagstaff AZ on 2026-07-04 @ 11:44 pm |
| Headline: | Extreme Heat Watch issued July 4 at 9:44PM MST until July 11 at 8:00PM MST by NWS Flagstaff AZ |
| Description: |
* WHAT...Dangerously hot conditions possible below 4000 feet, with daytime temperatures ranging from 100 degrees at Havasupai Gardens, to 113 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...From Tuesday morning through Saturday evening. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure. |
| Alert: | Extreme Heat Watch |
| Area(s): | Western Pima County Including Ajo/Organ Pipe Cactus National Monument; Tohono O'odham Nation including Sells; Tucson Metro Area including Tucson/Green Valley/Marana/Vail; South Central Pinal County including Eloy/Picacho Peak State Park; Southeast Pinal County including Kearny/Mammoth/Oracle; Upper Gila River and Aravaipa Valleys including Clifton/Safford |
| Effective: | 2026-07-04 @ 1:30 pm -> 2026-07-05 @ 7:00 am |
| Onset: | 2026-07-07 @ 12:00 pm -> 2026-07-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Future |
| Issued By: | NWS Tucson AZ on 2026-07-04 @ 1:30 pm |
| Headline: | Extreme Heat Watch issued July 4 at 11:30AM MST until July 8 at 8:00PM MST by NWS Tucson AZ |
| Description: |
* WHAT...Dangerously hot conditions with temperatures of 107 to 111 degrees. * WHERE...South Central Pinal County, Southeast Pinal County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River Valley, and Western Pima County. * WHEN...From Tuesday morning through Wednesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. |