San Diego WBGT Today — Wet Bulb Globe Temperature
Updated planning preview · 8:00 PM forecast from WeatherAPI
Estimated WBGT
23.1°C
Moderate
Add breaks and watch how you feel.
Temperature
82°F
Humidity
57%
Heat index
84°F
UV index
0.0
Best outdoor window
5:00 PM–9:00 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 |
|---|---|---|---|---|---|
| 7 AM | 78°F | 81°F | 24.0°C | 0.0 | Moderate |
| 9 AM | 80°F | 82°F | 24.5°C | 1.5 | Moderate |
| 11 AM | 83°F | 85°F | 25.2°C | 5.5 | Moderate |
| 1 PM | 83°F | 85°F | 25.0°C | 7.6 | Moderate |
| 3 PM | 82°F | 84°F | 24.8°C | 4.7 | Moderate |
| 5 PM | 81°F | 83°F | 24.7°C | 0.9 | Moderate |
| 7 AM | 76°F | 79°F | 23.5°C | 0.0 | Low |
| 9 AM | 79°F | 81°F | 24.0°C | 1.5 | Moderate |
Today's outlook
In San Diego, the highest modeled heat burden in this preview occurs around 9:00 AM. The recommended window is selected from the lowest combined risk score, temperature, and UV—not from generic city copy.
Three-day forecast
Monday
Heat index up to 87°F
86°F / 79°F
ModerateTuesday
Heat index up to 85°F
83°F / 78°F
ModerateWednesday
Heat index up to 83°F
81°F / 76°F
ModerateToday in San Diego
What changes across the day
Based on the available hourly WeatherAPI forecast
Peak heat index
85°F at 11:00 AM
The preview low is 79°F around 7:00 AM.
Feels-like difference
2°F above air temp
Current humidity is 57%, one input that changes evaporative cooling.
Peak UV
7.6 at 1:00 PM
UV and heat are separate hazards; the lowest-heat hour may still need sun protection.
Tomorrow's direction
2°F cooler tomorrow
Today's forecast range is 79°F–86°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 San Diego, CA
San Diego conditions can vary with marine influence, elevation, cloud cover and distance from the coast. Use this city forecast as a planning reference and check a more local official forecast when the activity takes place in a different microclimate.
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 San Diego in HeatGuard
Save this location and get alerts as conditions change.