Mesa WBGT Today — Wet Bulb Globe Temperature
Updated planning preview · 4:00 PM forecast from WeatherAPI
Estimated WBGT
33.0°C
Extreme
Stop or relocate strenuous activity unless a qualified protocol says otherwise.
Temperature
114°F
Humidity
17%
Heat index
120°F
UV index
3.5
Best outdoor window
6:00 AM–10:00 AM
Lowest combined heat and UV load in the available hourly preview.
Hourly WBGT
WBGT values are labeled as modeled estimates until a provider supplies measured readings.
| Time | Temperature | Heat index | Estimated WBGT | UV | Risk |
|---|---|---|---|---|---|
| 4 PM | 114°F | 120°F | 33.0°C | 3.5 | Very high |
| 6 PM | 111°F | 116°F | 31.4°C | 0.4 | Very high |
| 6 AM | 88°F | 87°F | 25.3°C | 0.0 | Moderate |
| 8 AM | 90°F | 88°F | 25.3°C | 1.6 | Moderate |
| 10 AM | 96°F | 94°F | 27.0°C | 6.4 | High |
| 12 PM | 101°F | 99°F | 28.2°C | 10.2 | High |
| 2 PM | 105°F | 106°F | 29.2°C | 8.7 | Very high |
| 4 PM | 106°F | 108°F | 28.4°C | 3.5 | Very high |
Today's outlook
In Mesa, the highest modeled heat burden in this preview occurs around 4:00 PM. The recommended window is selected from the lowest combined risk score, temperature, and UV—not from generic city copy.
Three-day forecast
Thursday
Heat index up to 120°F
114° / 77°
Very highFriday
Heat index up to 108°F
106° / 87°
Very highSaturday
Heat index up to 108°F
107° / 88°
Very highToday in Mesa
What changes across the day
Based on the available hourly WeatherAPI forecast
Peak heat index
120°F at 4:00 PM
The preview low is 87°F around 6:00 AM.
Feels-like difference
6°F above air temp
Current humidity is 17%, one input that changes evaporative cooling.
Peak UV
10.2 at 12:00 PM
UV and heat are separate hazards; the lowest-heat hour may still need sun protection.
Tomorrow's direction
12°F cooler tomorrow
Today's forecast range is 77–114°F.
Where these numbers come from
WeatherAPI supplies the forecast. HeatGuard calculates heat-index risk and models WBGT from forecast temperature, humidity and a daytime solar allowance. Modeled WBGT is not an on-site globe-thermometer reading.
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