A strong ridge of high pressure situated over the Desert Southwest led to excessive heat conditions across the region to start off July. High temperatures in Phoenix during this time ranged between 111-116 degrees. According to the Maricopa County Department of Public Health, there were 10 heat-associated fatalities that occurred during this time. Additionally, one heat-associated fatality also occurred in La Paz County. The month of July would continue on to become the hottest month on record in Phoenix with high temperatures in Phoenix topping out at or above 110 degrees every day except for the 31st. Numerous heat records would be broken and the summer would become the deadliest on record for Phoenix with a total of 645 heat-associated deaths. In addition to the heat fatalities, Phoenix Fire Department responded to a total of 2,240 calls for heat-related illness, which is 36% higher than 2022.

Excessive Heat in KOFA, ARIZONA
From 01-JUL-23 10:00:00 to 04-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in YUMA, ARIZONA
From 01-JUL-23 10:00:00 to 04-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in SCOTTSDALE/PARADISE VALLEY, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in EAST VALLEY, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in FOUNTAIN HILLS/EAST MESA, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in SOUTH MOUNTAIN/AHWATUKEE, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in SOUTHEAST VALLEY/QUEEN CREEK, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in NORTHWEST PINAL COUNTY, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in WEST PINAL COUNTY, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in SONORAN DESERT NATL MONUMENT, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in PARKER VALLEY, ARIZONA
From 01-JUL-23 10:00:00 to 04-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in NORTH PHOENIX/GLENDALE, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in APACHE JUNCTION/GOLD CANYON, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in CENTRAL PHOENIX, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Ten fatalities (5 direct and 5 indirect) were reported by the Maricopa County Department of Public Health, with their details, such as age, gender, circumstances, and exact location unavailable.

Excessive Heat in DEER VALLEY, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in CAVE CREEK/NEW RIVER, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in CENTRAL LA PAZ, ARIZONA
From 01-JUL-23 10:00:00 to 04-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

One direct fatality was reported in the Quartzsite area, with their details, such as age, gender, circumstances, and exact location unavailable.

Excessive Heat in AGUILA VALLEY, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in NORTHWEST VALLEY, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in TONOPAH DESERT, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in GILA BEND, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in BUCKEYE/AVONDALE, ARIZONA
From 01-JUL-23 10:00:00 to 05-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in SOUTHEAST YUMA COUNTY, ARIZONA
From 01-JUL-23 10:00:00 to 04-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in GILA RIVER VALLEY, ARIZONA
From 01-JUL-23 10:00:00 to 04-JUL-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official