Best Wet Bulb Apps

131+ iOS apps curated and reviewed

4.5 avg rating
18 free apps
Updated November 2026

Finding the right wet bulb apps can be overwhelming with so many options. We've analyzed 131+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Wet Bulb Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Heat SafetyHeat SafetyFree4.6★ (2.8K)YesYesOct 2026
2Zelus WBGTZelus WBGTFree2.8★ (56)NoYesOct 2026
3Wet Bulb & Safety: HeatCueWet Bulb & Safety: HeatCueFree4.8★ (17)NoYesOct 2026
4WetBulbCastWetBulbCastFree5.0★ (1)NoNoOct 2026
5HeatAlert: Heat Stress IndexHeatAlert: Heat Stress IndexFree3.5★ (13)NoNoOct 2026
6Heat Index: Wet BulbHeat Index: Wet Bulb$2.995.0★ (2)NoNoOct 2026
7Wet Bulb Temperature TrackerWet Bulb Temperature TrackerFree5.0★ (2)NoYesOct 2026
8HeatSafe WBGTHeatSafe WBGTFree3.0★ (2)YesYesOct 2026

Top Picks for Wet Bulb

Heat Safety#1

Heat Safety by Qvyshift LLC

Heat Conditions and Forecasts
Editor's Choice
☀️ Weather
4.6😞(2.8K ratings)
FreeAdsIn-App Purchases
Heat Safety screenshot 1
Heat Safety screenshot 2
Heat Safety screenshot 3
Heat Safety screenshot 4
Heat Safety screenshot 5
Heat Safety screenshot 6

This tool helps prevent heat-related illnesses for outdoor workers by providing heat index and wet bulb temperature data. It offers current conditions and forecasts for US locations, using standardized risk level categorizations to help plan work activities and ensure safety.

What We Love

  • 👍 Straightforward, simple graphics
  • 🚀 Works great initially
  • 💡 Useful for understanding heat index/wet bulb temps

Room to Improve

  • 🐛 Suddenly stops working/retrieving info
  • 🐛 Inconsistent performance, won't give readings sometimes
  • 🐛 Crashes frequently when trying to get heat assessment
2.8(56 ratings)
FreeIn-App Purchases
#85in Weather
Zelus WBGT screenshot 1
Zelus WBGT screenshot 2
Zelus WBGT screenshot 3
Zelus WBGT screenshot 4
Zelus WBGT screenshot 5

This advanced system monitors outdoor environmental risks in real-time, including heat, lightning, and air quality. It provides essential tools for organizations to safeguard teams and ensure operational safety without needing extra hardware. Trusted globally by professionals for compliance and peace of mind.

Wet Bulb & Safety: HeatCue#3
4.8(17 ratings)
FreeIn-App Purchases
Wet Bulb & Safety: HeatCue screenshot 1
Wet Bulb & Safety: HeatCue screenshot 2
Wet Bulb & Safety: HeatCue screenshot 3
Wet Bulb & Safety: HeatCue screenshot 4
Wet Bulb & Safety: HeatCue screenshot 5
Wet Bulb & Safety: HeatCue screenshot 6

This app provides a clear risk assessment for outdoor activities by calculating the wet-bulb globe temperature (WBGT), which combines heat and humidity. It offers a simple risk band, UV index, and customizable alerts to help users stay safe in various conditions.

More Wet Bulb apps to explore

FAQ about Wet Bulb

What are the best wet bulb apps for iPhone?
Heat Safety tops our wet bulb apps ranking as of November 2026, with a 4.6-star average from 2.8K App Store ratings, and it's free to download.
Yes — 18 of the top wet bulb apps we rank are free to download, including Heat Safety and Zelus WBGT.
Heat Safety shows ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 131+ wet bulb apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.