Extreme Heat Warning issued June 18 at 4:00AM MST until June 20 at 9:00PM MST by NWS Tucson AZ
* WHAT...For the Thursday through Friday Extreme Heat Warning, dangerously hot conditions with temperatures up to 115 possible in the Tucson metropolitan area, Gila River Valley, and across western and central Pima County including the Tohono O'odham Nation. High temperatures elsewhere will be 102 to 108 degrees. * WHERE...Eastern Cochise County below 5000 feet, South Central Pinal County, Southeast Pinal County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River Valley, Upper San Pedro River Valley, Upper Santa Cruz River Valley/Altar Valley, and Western Pima County. * WHEN...From 10 AM Thursday to 9 PM MST Friday. * IMPACTS...Heat related illnesses
Extreme Heat Warning issued June 18 at 3:39AM MST until June 20 at 7:00PM MST by NWS Flagstaff AZ
* WHAT...Dangerously hot conditions below 4000 feet, with daytime temperatures ranging from 102 degrees at Havasupai Gardens, to 114 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...Until 7 PM MST Friday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.
Extreme Heat Warning issued June 18 at 12:54AM MST until June 20 at 8:00PM MST by NWS Phoenix AZ
* WHAT...Dangerously hot conditions. Afternoon temperatures 105 to 117 expected. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...A portion of south central Arizona. * WHEN...From 10 AM this morning to 8 PM MST Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Air Quality Alert issued June 17 at 9:35AM MST by NWS Phoenix AZ
AQAPSR The Arizona Department of Environmental Quality (ADEQ) has issued an Ozone High Pollution Advisory for the Phoenix Metro Area on Wednesday. This means that forecast weather conditions combined with existing ozone levels are expected to result in local maximum 8-hour ozone concentrations that pose a health risk. Adverse health effects increase as air quality deteriorates. Ozone is an air contaminant which can cause breathing difficulties for children, older adults, as well as persons with respiratory problems. A decrease in physical activity is recommended. You are urged to car pool, telecommute or use mass transit. The use of gasoline-powered equipment
Extreme Heat Warning issued June 17 at 5:33AM MST until June 20 at 9:00PM MST by NWS Tucson AZ
* WHAT...For the Thursday through Friday Extreme Heat Warning, dangerously hot conditions with temperatures up to 115 possible in the Tucson metropolitan area, Gila River Valley, and across western and central Pima County including the Tohono O'odham Nation. High temperatures elsewhere will be 102 to 108 degrees. * WHERE...Eastern Cochise County below 5000 feet, South Central Pinal County, Southeast Pinal County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River Valley, Upper San Pedro River Valley, Upper Santa Cruz River Valley/Altar Valley, and Western Pima County. * WHEN...From 10 AM Thursday to 9 PM MST Friday. * IMPACTS...Heat related illnesses
Extreme Heat Warning issued June 17 at 3:37AM MST until June 20 at 8:00PM MST by NWS Phoenix AZ
* WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 116. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...A portion of south central Arizona. * WHEN...Until 8 PM MST Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...In Maricopa County, call 2 1 1 to find a free cooling center, transportation, water, and more. https://www.maricopa.gov/heat
Red Flag Warning issued June 17 at 12:36AM MST until June 17 at 8:00PM MST by NWS Flagstaff AZ
MST Tue Jun 17 2025/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM MST /NOON MDT/ THIS MORNING TO 8 PM MST /9 PM MDT/ THIS EVENING FOR PORTIONS OF NORTHEAST ARIZONA... * AFFECTED AREA...Locations near Buffalo Pass, Dilkon, Eagar- Springerville, Ganado, Holbrook, Kykotsmovi, Saint Johns, Snowflake-Taylor, Window Rock and Winslow. * WINDS...West 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...5 to 10 percent. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly.
Extreme Heat Warning issued June 17 at 12:33AM MST until June 20 at 7:00PM MST by NWS Flagstaff AZ
* WHAT...Dangerously hot conditions below 4000 feet, with daytime temperatures ranging from 102 degrees at Havasupai Gardens, to 114 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...Until 7 PM MST Friday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.
Extreme Heat Watch issued June 16 at 12:57AM MST until June 20 at 9:00PM MST by NWS Tucson AZ
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with temperatures up to 112 possible in the Tucson metropolitan area, Gila River Valley, and across western and central Pima County including the Tohono O'odham Nation. High temperatures elsewhere will be 100 to 106 degrees. For the Extreme Heat Watch, dangerously hot conditions with temperatures up to 113 possible in the Tucson metropolitan area, Gila River Valley, and across western and central Pima County including the Tohono O'odham Nation. High temperatures elsewhere will be 100 to 106 degrees. * WHERE...Eastern Cochise County below 5000 feet, South Central Pinal County, Southeast Pinal
Extreme Heat Warning issued June 16 at 12:57AM MST until June 16 at 8:00PM MST by NWS Tucson AZ
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with temperatures up to 112 possible in the Tucson metropolitan area, Gila River Valley, and across western and central Pima County including the Tohono O'odham Nation. High temperatures elsewhere will be 100 to 106 degrees. For the Extreme Heat Watch, dangerously hot conditions with temperatures up to 113 possible in the Tucson metropolitan area, Gila River Valley, and across western and central Pima County including the Tohono O'odham Nation. High temperatures elsewhere will be 100 to 106 degrees. * WHERE...Eastern Cochise County below 5000 feet, South Central Pinal County, Southeast Pinal