Jacksonville WBGT Today — Wet Bulb Globe Temperature
Updated planning preview · 8:00 PM forecast from WeatherAPI
Estimated WBGT
23.7°C
Moderate
Add breaks and watch how you feel.
Temperature
76°F
Humidity
91%
Heat index
81°F
UV index
0.0
Best outdoor window
6:00 PM–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 |
|---|---|---|---|---|---|
| 8 AM | 75°F | 79°F | 25.0°C | 0.0 | Low |
| 10 AM | 79°F | 84°F | 26.1°C | 1.4 | Moderate |
| 12 PM | 82°F | 88°F | 27.0°C | 5.5 | Moderate |
| 2 PM | 84°F | 90°F | 27.4°C | 6.9 | Moderate |
| 4 PM | 77°F | 82°F | 25.7°C | 0.7 | Moderate |
| 6 PM | 75°F | 80°F | 25.0°C | 0.1 | Low |
| 8 AM | 73°F | 77°F | 23.8°C | 0.0 | Low |
| 10 AM | 74°F | 78°F | 24.1°C | 0.3 | Low |
Today's outlook
In Jacksonville, 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
Sunday
Heat index up to 99°F
93°F / 76°F
HighMonday
Heat index up to 90°F
84°F / 74°F
ModerateTuesday
Heat index up to 78°F
74°F / 72°F
LowToday in Jacksonville
What changes across the day
Based on the available hourly WeatherAPI forecast
Peak heat index
90°F at 2:00 PM
The preview low is 77°F around 8:00 AM.
Feels-like difference
5°F above air temp
Current humidity is 91%, one input that changes evaporative cooling.
Peak UV
6.9 at 2:00 PM
UV and heat are separate hazards; the lowest-heat hour may still need sun protection.
Tomorrow's direction
9°F cooler tomorrow
Today's forecast range is 76°F–93°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.
Local planning context
Planning for heat in Jacksonville, FL
Jacksonville can combine high humidity with warm mornings and evenings. Humidity may keep the heat index elevated even when air temperature alone looks manageable, so compare the full hourly window before choosing a start time.
Forecasts describe outdoor conditions, not an individual's medical risk. Workload, duration, shade, clothing, acclimatization and health can change the appropriate decision.
Nearby forecasts
Keep planning
Track Jacksonville in HeatGuard
Save this location and get alerts as conditions change.