Columbia Heat Index Today
Updated planning preview · 7:00 PM forecast from WeatherAPI
Heat index
103°F
Very high
Reschedule strenuous activity when possible.
Temperature
98°F
Humidity
36%
Estimated WBGT
30.0°C
UV index
0.2
Best outdoor window
7:00 AM–11:00 AM
Lowest combined heat and UV load in the available hourly preview.
Hourly heat risk
WBGT values are labeled as modeled estimates until a provider supplies measured readings.
| Time | Temperature | Heat index | Estimated WBGT | UV | Risk |
|---|---|---|---|---|---|
| 7 PM | 98°F | 103°F | 30.0°C | 0.2 | Very high |
| 7 AM | 77°F | 81°F | 24.8°C | 0.0 | Moderate |
| 9 AM | 83°F | 86°F | 26.1°C | 1.5 | Moderate |
| 11 AM | 91°F | 96°F | 28.4°C | 5.9 | High |
| 1 PM | 96°F | 101°F | 29.7°C | 9.4 | High |
| 3 PM | 99°F | 104°F | 30.3°C | 7.7 | Very high |
| 5 PM | 98°F | 102°F | 29.7°C | 3.0 | High |
| 7 PM | 82°F | 87°F | 26.4°C | 0.3 | Moderate |
Today's outlook
In Columbia, the highest modeled heat burden in this preview occurs around 3:00 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 117°F
104° / 76°
Very highFriday
Heat index up to 104°F
99° / 72°
Very highSaturday
Heat index up to 101°F
94° / 71°
HighToday in Columbia
What changes across the day
Based on the available hourly WeatherAPI forecast
Peak heat index
104°F at 3:00 PM
The preview low is 81°F around 7:00 AM.
Feels-like difference
6°F above air temp
Current humidity is 36%, one input that changes evaporative cooling.
Peak UV
9.4 at 1:00 PM
UV and heat are separate hazards; the lowest-heat hour may still need sun protection.
Tomorrow's direction
13°F cooler tomorrow
Today's forecast range is 76–104°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.
Keep planning
Track Columbia in HeatGuard
Save this location and get alerts as conditions change.