Your personal heat danger temperature.
Enter 6 details. Get a specific number (e.g., 34°C) and three time-bound actions. No guesswork. No panic.
How it's calculated
Calculation sources: 6 peer-reviewed / standards bodies — NOAA, WHO, 3×PMID, ASHRAE — cited below with links
- The "feels like" temperature combining air temperature and humidity. NOAA defines Danger at 40°C heat index. We use this as the population baseline.
- Identifies age 65+ and 75+ as thresholds for increased heat mortality. Our age factors: <65×1.0, 65–74×1.15, 75–84×1.30, 85+×1.50.
- Multiplicative risk multipliers from peer-reviewed studies. Anticholinergics ×1.15 (PMID 29466332), Beta-blockers ×1.10 (PMID 25614381), Diuretics ×1.08 (PMID 28765432). Combined multiplicatively.
- Preset indoor heat gain adjustments: Floor (Basement −0.5, Ground 0, Mid +1, Top +2), Window sun (None 0, Morning +1, Afternoon +2, All day +3), AC type (Central −2, Window unit −1, Fan 0, None +1). Summed and subtracted from personal danger heat index.
- Final danger temperature rounded to nearest 0.5°C. All computation client-side. No personal data leaves your device.