Heat stress in Chandler
East Valley tech hub baked by the same low-desert sun that makes Phoenix afternoons a heat-stress hazard through the long summer.
Dangerous. Outdoor work and sport are not recommended.
Wet-bulb globe temperature via the Liljegren (2008) method. This page is cached and refreshes in the background, so the live badge below can be a few minutes ahead of it.
View Chandler on the live mapReading heat stress in Chandler
Wet-bulb globe temperature (WBGT) is the heat measure that actually tracks danger to the body. Unlike the plain air temperature on your phone, it folds in humidity, wind, and direct sun: the factors that decide whether your sweat can still cool you. It’s the standard the military, athletic associations, and occupational-safety bodies use to call when outdoor activity is no longer safe.
That matters in Chandler because east Valley tech hub baked by the same low-desert sun that makes Phoenix afternoons a heat-stress hazard through the long summer. The number above is the live outdoor WBGT for the city right now; tap through to the live map to inspect any neighborhood, scrub the forecast hour by hour, and see the 7-day outlook.
How hot Chandler usually gets
Across 2015–2024, Chandler averaged a 105°F daily high in summer: 2nd hottest of the 174 metros we track, and July is typically the warmest month.
Heat here is the default rather than an event: about 103 days a year reach 100°F, and 170 reach 90°F.
The air is dry, averaging about 28% through summer, so sweat works and the danger is sun load and raw heat rather than mugginess.
A bad day runs well past a normal one, with 118°F recorded against a 105°F summer average.
Daily high temperatures and humidity from ERA5 reanalysis, 2015–2024 (hottest day in the sample: 2016-06-19). These are climate averages for context: the reading at the top of this page is the live one.
For school sports, AIA (Arizona Interscholastic Association) publishes AIA Policies and Procedures 2026-27, Article 43 Sports Medicine §43.6, which uses wet-bulb globe temperature. Arizona’s activity zones appear beside the live reading in the app.
Heat in Chandler: common questions
How hot does it usually get in Chandler?
Across 2015–2024, Chandler averaged a 105°F daily high through summer, with about 170 days a year at or above 90°F and 103 at or above 100°F. July is typically the hottest month, and the hottest day in that sample reached 118°F. Figures are from ERA5 daily reanalysis.
When is the hottest time of year in Chandler?
July has the highest average daily high in Chandler. Summer humidity averages only about 28%, so sweat evaporates efficiently: the danger here is sun and raw heat rather than mugginess. Use the forecast on this page to plan around the specific days that matter.
Does Arizona have a heat policy for school sports?
AIA (Arizona Interscholastic Association) publishes AIA Policies and Procedures 2026-27, Article 43 Sports Medicine §43.6, which uses wet-bulb globe temperature. Arizona’s activity zones appear beside the live reading in the app. Our WBGT is a modeled estimate rather than the on-site device reading a policy may call for, so check the association's own document for current requirements.
What is the WBGT in Chandler right now?
The reading at the top of this page is the current wet-bulb globe temperature for Chandler, Arizona, computed from live weather by the Liljegren (2008) method and labeled with how recently it updated. For an exact reading at your own neighborhood, plus an hour-by-hour forecast, open the live map.
Why is WBGT more useful than the temperature for Chandler?
Air temperature ignores humidity, wind, and sun: the things that decide whether heat is dangerous. Chandler's climate (east Valley tech hub baked by the same low-desert sun that makes Phoenix afternoons a heat-stress hazard through the long summer.) is exactly why a single "feels-like" or thermometer reading can understate the real risk. WBGT captures all of it in one number.
When is heat most dangerous in Chandler?
July is the peak month in Chandler, and within a day heat stress is highest in the early-to-mid afternoon when sun load is greatest. With roughly 103 days a year above 100°F, the safe window is often early morning rather than merely "not midday". Use the forecast on this page to find the window that works.
Put Chandler’s live heat stress on your site
A self-updating WBGT badge for schools, teams, camps, and local sites: it always shows the current reading and links back here.
<iframe src="https://wetbulbtracker.com/embed/chandler-az" width="340" height="150" style="border:0" title="Live WBGT: Chandler, AZ" loading="lazy"></iframe>Paste it into any website. The badge updates itself and links back here. Add ?theme=light for light sites.