Best Heat Index Apps

248+ iOS apps curated and reviewed

4.2 avg rating
18 free apps
Updated November 2026

If you already know OSHA, this is the deeper bench. 248+ heat index apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of November 2026.

Compare top Heat Index Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1OSHA-NIOSH Heat Safety ToolOSHA-NIOSH Heat Safety ToolFree2.6β˜… (316)NoNoOct 2026
2Heat SafetyHeat SafetyFree4.6β˜… (2.8K)YesYesNov 2026
3Heat Index: NIOSH CalculatorHeat Index: NIOSH CalculatorFree4.4β˜… (26)NoNoOct 2026
4Heat Index: Worksite SafetyHeat Index: Worksite SafetyFree5.0β˜… (2)NoNoOct 2026
5HeatOK: Heat Index & WBGTHeatOK: Heat Index & WBGTFree5.0β˜… (3)NoYesOct 2026
6HeatAlert: Heat Stress IndexHeatAlert: Heat Stress IndexFree3.5β˜… (13)NoNoOct 2026
7Heat Index: Get Heat AlertsHeat Index: Get Heat AlertsFree5.0β˜… (3)NoYesOct 2026
8HeatGuard: Heat IndexHeatGuard: Heat IndexFreeβ€”NoYesSep 2026

Top Picks for Heat Index

2.6😞(316 ratings)
Free
#64in Weather
OSHA-NIOSH Heat Safety Tool screenshot 1
OSHA-NIOSH Heat Safety Tool screenshot 2
OSHA-NIOSH Heat Safety Tool screenshot 3
OSHA-NIOSH Heat Safety Tool screenshot 4
OSHA-NIOSH Heat Safety Tool screenshot 5
OSHA-NIOSH Heat Safety Tool screenshot 6

This tool helps outdoor workers stay safe by providing real-time heat index information and hourly forecasts specific to their location. It offers occupational safety recommendations and details on heat-related illnesses and their first aid.

What We Love

  • πŸ’‘ Valuable tool for heat safety
  • πŸ‘ Useful and informative
  • πŸ‘ Precise and accurate
  • πŸ‘ Great for tracking heat index
  • πŸ‘ Helpful precautionary and first aid information
  • πŸ‘ Available in Spanish

Room to Improve

  • πŸ› Crashes or doesn't load data
  • πŸ› Inaccurate or inconsistent temperature/heat index readings
  • πŸ› Doesn't work in Canada
  • πŸ› Frequent errors or connection issues
  • πŸ› Doesn't update or refresh properly
  • πŸ› Unreliable or not user-friendly
Heat Safety#2

Heat Safety by Qvyshift LLC

Heat Conditions and Forecasts
Strong Contender
β˜€οΈ 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

  • πŸ‘ Straightforward, simple graphics
  • πŸš€ Works great initially
  • πŸ’‘ Useful for understanding heat index/wet bulb temps

Room to Improve

  • πŸ› Suddenly stops working/retrieving info
  • πŸ› Inconsistent performance, won't give readings sometimes
  • πŸ› Crashes frequently when trying to get heat assessment

More Heat Index apps to explore

FAQ about Heat Index

What are the best heat index apps for iPhone?
OSHA-NIOSH Heat Safety Tool tops our heat index apps ranking as of November 2026, with a 2.6-star average from 316 App Store ratings, and it's free to download.
Yes β€” 18 of the top heat index apps we rank are free to download, including OSHA-NIOSH Heat Safety Tool and Heat Safety.
OSHA-NIOSH Heat Safety Tool has no ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 248+ heat index apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.

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