249+ iOS apps curated and reviewed
The best heat index tool apps on iPhone average 3.9★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 2.5★ (312) | No | No | Aug 2026 |
| 2 |  | Free | 3.6★ (11) | No | No | Aug 2026 |
| 3 |  | Free | 4.4★ (19) | No | No | Aug 2026 |
| 4 |  | Free | 4.6★ (2.5K) | Yes | Yes | Aug 2026 |
| 5 |  | Free | — | No | Yes | Aug 2026 |
| 6 |  | Free | 4.7★ (69) | Yes | Yes | Aug 2026 |
| 7 |  | Free | 4.0★ (1) | Yes | Yes | May 2026 |
| 8 |  | Free | — | No | Yes | Aug 2026 |
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.
This application provides real-time Wet Bulb Globe Temperature (WBGT) and detailed weather forecasts for your location. It offers heat stress risk assessments and actionable recommendations to help you stay safe outdoors. Receive location-based insights including temperature, humidity, wind speed, and UV index.
This tool calculates the heat index based on temperature and humidity, providing OSHA-calibrated risk levels and protective recommendations for outdoor work. It also includes a reference guide for heat-related illnesses and first aid.
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.
Instantly determine how hot it truly feels by combining temperature and humidity. This app provides real-time weather data, forecasts, and heat risk warnings to help you plan outdoor activities safely and avoid heat-related illnesses.
Calculate the heat index by simply inputting air temperature and relative humidity. Supports multiple temperature units including Kelvin, Celsius, and Fahrenheit. Results are for reference only.
This app assists heating engineers and surveyors in collecting property data for heating system installations. It supports heat loss reports for various technologies and includes tools for sound assessments and quick estimations. Data is automatically saved for later review and amendment.
This app provides real-time heat conditions and forecasts to help users avoid heat-related illness. It offers hourly and 7-day outlooks with clear risk level guidance, designed exclusively for users in the United States.
This application offers convenient and quick remote control for heat pumps. It allows users to manage their heating systems remotely, providing a streamlined user experience.
This app calculates the perceived temperature by considering both air temperature and relative humidity. It provides a heat category to help users determine necessary precautions when outdoors, especially in high temperatures and humidity.
Control your heat pump remotely with ease. This application allows for quick and convenient adjustments to your heating system from your mobile device.
