Features
Built for the supervisor's phone at 5 AM.
Official WBGT forecast
Hourly wet-bulb globe temperature straight from the National Weather Service grid that covers your site.
Four workload levels
Light, moderate, heavy and very heavy, mapped to ISO 7243 metabolic rates.
Acclimatized and new-worker limits
Switch between the NIOSH REL and the lower RAL for new or returning workers.
Work/rest minutes per hour
5-minute resolution, from full work down to rest only.
Best shift window
For 8, 10 or 12-hour shifts across the next three days.
7-day calendar
Every hour of the week colour-coded by plan.
Crew briefing
Print-ready table with water guidance for each daylight hour.
Share links
Each plan has its own URL with the address saved.
Clear source labels
Every hour says whether WBGT is official NWS or estimated.
Address search that works
Autocomplete, full-address geocoding, ZIP codes and coordinates.
Fast on any phone
Lightweight pages with no heavy graphics, so the plan loads quickly on a phone.
Private by design
No account, no tracking cookies, and we don't store your addresses.