---
title: "Heat Index - HI - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "The first "Heat Index" tool that uses the Lans P. Rothfusz equation.  [Description] The heat index (HI) is an index that combines air temperature and relative humidity, in shaded areas, that is the fe"
---

# Heat Index - HI — United States
> Feeling hot or cold

![Heat Index - HI App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple124/v4/68/d0/00/68d000fa-3654-047e-0517-19c0d0e18b6e/AppIcon-0-0-1x_U007emarketing-0-0-0-7-0-0-sRGB-0-0-0-GLES2_U002c0-512MB-85-220-0-0.png/434x0w.png)

**Developer:** [LionsApp di Nallbati Elton](https://apptail.io/developer/lionsapp-di-nallbati-elton-Zxj)
**Category:** Weather
**Rating:** 3.8/5 (8 ratings)
**Price:** Free
**Bundle ID:** com.lionsapp.HeatIndex
**Store:** Apple App Store
**Country:** United States
**Version:** 1.2 (released 2020-08-04)
**Original Release:** 2020-06-21
**Languages:** Danish, Russian, Norwegian Bokmål, German, Italian, Japanese, French, Swedish, Chinese, Finnish, English, Dutch, Portuguese, Spanish

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1480149233)
**AppTail Page:** [https://apptail.io/app/heat-index-hi-kzve/united-states](https://apptail.io/app/heat-index-hi-kzve/united-states)

## Heat Index - HI Description
The first "Heat Index" tool that uses the Lans P. Rothfusz equation.

[Description]
The heat index (HI) is an index that combines air temperature and relative humidity, in shaded areas, that is the feeling of "hot" or "cold" that is felt; it is due not only to the air temperature, but also to other environmental conditions, such as humidity and wind.

The heat index was developed in 1979 by Robert G. Steadman.
The computation of the heat index is a refinement of a result obtained by multiple regression analysis carried out by Lans P. Rothfusz and described in a 1990 National Weather Service (NWS) Technical Attachment (SR 90-23).

The heat index is also known as the "felt air temperature", "apparent temperature", "real feel" or "feels like".
The humidity in the air can increase the sensation of heat, while the wind can increase the sensation of cold.
For example, when the temperature is 32°C (90°F) with 70% relative humidity, the heat index is 41°C (106°F).

[How does it work]
Wherever you are, you will have the Heat Index, temperature, humidity and weather conditions.
Search for new locations and they will automatically be added to your favorites.
Make sure you have activated the location services on your device, at this point the App will detect your geographical position.

[Features]
- Heat Index calculated with the Rothfusz equation
- Temperature
- Humidity
- Effects of the Heat Index
- Choice of 3 units of measurement: celsius, fahrenheit and kelvin
- Map current location
- Search City (without limits)
- Save favorite places (without limits)
- Intuitive graphics
- Ease of use

[Supported languages]
English, Italian, Spanish, French, German, Portuguese, Dutch, Russian, Chinese, Japanese, Danish, Finnish, Norwegian, Swedish.

[Support]
If you need help please do not hesitate to contact us at info@lionsapp.com, or visit www.lionsapp.com
If you like the App, don't forget to leave us a comment on the App Store.

## Heat Index - HI Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource123/v4/2b/6e/67/2b6e6749-750e-98b8-df75-36682b27d58f/75158dae-c125-495a-8948-fa8fcfe0e6f0_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-20_at_00.02.23.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource123/v4/66/ab/dd/66abdd47-2e45-696c-e32d-31dc759ecec5/298bb489-c49c-47ed-b86d-666e2c33b83b_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-20_at_00.02.51.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource123/v4/34/a5/2d/34a52d82-bd0a-b331-288e-ccd10a8082b0/557c68b9-174f-41ee-9f55-75dd405b0af9_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-20_at_00.03.19.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource123/v4/e7/78/f2/e778f21b-779e-fb26-b002-49808c446267/df7acfd7-3d47-41a1-aa08-3474b1a109cf_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-20_at_00.15.35.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/0c/d2/65/0cd26577-b5d3-093c-0914-f62814356af9/cb752e53-68cc-4417-ad20-fc6df0e881e9_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-20_at_00.16.03.png/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource123/v4/f2/07/c9/f207c9d4-e953-09e7-1206-f32d42037acf/a448a50d-738c-45c4-8144-baabaabad991_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-20_at_00.05.13.png/1242x2688.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/44/96/b2/4496b2b1-9517-32fd-5e5a-340d002097e7/e4b02407-764e-4de8-8a4f-564a2a72b7fe_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-20_at_00.05.07.png/1242x2688.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/44/7c/6f/447c6f10-b248-3ceb-d97e-1b784b9f335c/16390111-230c-4eb6-9416-638b1861b031_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-20_at_00.05.24.png/1242x2688.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/f8/d5/f1/f8d5f151-a961-5de6-2634-d1b4abf42547/00abd98b-f29c-4f7d-aa9a-d9450a0df3e9_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-20_at_00.05.27.png/1242x2688.png)
- [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource123/v4/85/e8/cf/85e8cf56-750d-ee94-00f1-41c6030380ab/35e0a8d3-014e-4b72-8935-b5942b7ace8c_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-20_at_00.05.31.png/1242x2688.png)

## Heat Index - HI Rating Breakdown in United States
- 5 stars: 4 (50%)
- 4 stars: 2 (25%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 2 (25%)



## Heat Index - HI Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Greece | Weather | #4 |
| Top Paid | Philippines | Weather | #8 |
| Top Grossing | Greece | Weather | #45 |
| Top Grossing | Philippines | Weather | #51 |
| Top Paid | Pakistan | Weather | #52 |
| Top Paid | Brazil | Weather | #59 |
| Top Paid | Denmark | Weather | #60 |
| Top Paid | Chile | Weather | #65 |
| Top Paid | Dominican Republic | Weather | #67 |
| Top Paid | Peru | Weather | #72 |
| Top Paid | Romania | Weather | #74 |
| Top Paid | Greece | Overall | #75 |
| Top Paid | Ecuador | Weather | #77 |
| Top Paid | Colombia | Weather | #81 |
| Top Paid | Belgium | Weather | #81 |
| Top Paid | Norway | Weather | #84 |
| Top Paid | Saudi Arabia | Weather | #87 |
| Top Paid | Sweden | Weather | #88 |
| Top Paid | Ukraine | Weather | #89 |
| Top Paid | Spain | Weather | #91 |
| Top Paid | Netherlands | Weather | #95 |
| Top Paid | Italy | Weather | #96 |
| Top Paid | Portugal | Weather | #99 |
| Top Paid | Russia | Weather | #109 |
| Top Paid | Finland | Weather | #110 |
| Top Paid | United Arab Emirates | Weather | #117 |
| Top Paid | Japan | Weather | #118 |
| Top Paid | France | Weather | #121 |
| Top Paid | Argentina | Weather | #124 |
| Top Paid | Austria | Weather | #129 |
| Top Paid | Israel | Weather | #132 |
| Top Paid | Mexico | Weather | #133 |
| Top Paid | Canada | Weather | #136 |
| Top Paid | Malaysia | Weather | #137 |
| Top Paid | Taiwan | Weather | #138 |
| Top Paid | Switzerland | Weather | #139 |
| Top Paid | Hungary | Weather | #147 |
| Top Paid | Poland | Weather | #150 |
| Top Paid | Hong Kong SAR China | Weather | #155 |
| Top Paid | India | Weather | #157 |
| Top Paid | Germany | Weather | #157 |
| Top Paid | Czechia | Weather | #160 |
| Top Paid | Thailand | Weather | #161 |
| Top Paid | Philippines | Overall | #163 |
| Top Paid | Ireland | Weather | #167 |
| Top Paid | Australia | Weather | #189 |
| Top Paid | China | Weather | #194 |
| Top Paid | Türkiye | Weather | #195 |
| Top Paid | United States | Weather | #199 |
| Top Paid | New Zealand | Weather | #201 |
| Top Paid | United Kingdom | Weather | #213 |



## Heat Index - HI Available In
- [United States](https://apptail.io/app/heat-index-hi-kzve/united-states)
- [Germany](https://apptail.io/app/heat-index-hi-kzve/germany)
- [Spain](https://apptail.io/app/heat-index-hi-kzve/spain)
- [Netherlands](https://apptail.io/app/heat-index-hi-kzve/netherlands)
- [Norway](https://apptail.io/app/heat-index-hi-kzve/norway)
- [Canada](https://apptail.io/app/heat-index-hi-kzve/canada)
- [Taiwan](https://apptail.io/app/heat-index-hi-kzve/taiwan)
- [Romania](https://apptail.io/app/heat-index-hi-kzve/romania)
- [Russia](https://apptail.io/app/heat-index-hi-kzve/russia)
- [France](https://apptail.io/app/heat-index-hi-kzve/france)
- [United Kingdom](https://apptail.io/app/heat-index-hi-kzve/united-kingdom)
- [Italy](https://apptail.io/app/heat-index-hi-kzve/italy)
- [Philippines](https://apptail.io/app/heat-index-hi-kzve/philippines)
- [Switzerland](https://apptail.io/app/heat-index-hi-kzve/switzerland)
- [Chile](https://apptail.io/app/heat-index-hi-kzve/chile)
- [China](https://apptail.io/app/heat-index-hi-kzve/china)
- [Colombia](https://apptail.io/app/heat-index-hi-kzve/colombia)
- [Cyprus](https://apptail.io/app/heat-index-hi-kzve/cyprus)
- [Czechia](https://apptail.io/app/heat-index-hi-kzve/czechia)
- [Denmark](https://apptail.io/app/heat-index-hi-kzve/denmark)
- [Dominican Republic](https://apptail.io/app/heat-index-hi-kzve/dominican-republic)
- [Algeria](https://apptail.io/app/heat-index-hi-kzve/algeria)
- [Ecuador](https://apptail.io/app/heat-index-hi-kzve/ecuador)
- [Estonia](https://apptail.io/app/heat-index-hi-kzve/estonia)
- [Egypt](https://apptail.io/app/heat-index-hi-kzve/egypt)
- [Finland](https://apptail.io/app/heat-index-hi-kzve/finland)
- [Grenada](https://apptail.io/app/heat-index-hi-kzve/grenada)
- [Ghana](https://apptail.io/app/heat-index-hi-kzve/ghana)
- [Greece](https://apptail.io/app/heat-index-hi-kzve/greece)
- [Hong Kong SAR China](https://apptail.io/app/heat-index-hi-kzve/hong-kong)
- [Croatia](https://apptail.io/app/heat-index-hi-kzve/croatia)
- [Hungary](https://apptail.io/app/heat-index-hi-kzve/hungary)
- [Indonesia](https://apptail.io/app/heat-index-hi-kzve/indonesia)
- [Ireland](https://apptail.io/app/heat-index-hi-kzve/ireland)
- [Israel](https://apptail.io/app/heat-index-hi-kzve/israel)
- [India](https://apptail.io/app/heat-index-hi-kzve/india)
- [Iceland](https://apptail.io/app/heat-index-hi-kzve/iceland)
- [Jamaica](https://apptail.io/app/heat-index-hi-kzve/jamaica)
- [Japan](https://apptail.io/app/heat-index-hi-kzve/japan)
- [Kenya](https://apptail.io/app/heat-index-hi-kzve/kenya)
- [South Korea](https://apptail.io/app/heat-index-hi-kzve/south-korea)
- [Kuwait](https://apptail.io/app/heat-index-hi-kzve/kuwait)
- [Kazakhstan](https://apptail.io/app/heat-index-hi-kzve/kazakhstan)
- [Lebanon](https://apptail.io/app/heat-index-hi-kzve/lebanon)
- [Sri Lanka](https://apptail.io/app/heat-index-hi-kzve/sri-lanka)
- [Lithuania](https://apptail.io/app/heat-index-hi-kzve/lithuania)
- [Luxembourg](https://apptail.io/app/heat-index-hi-kzve/luxembourg)
- [Latvia](https://apptail.io/app/heat-index-hi-kzve/latvia)
- [Madagascar](https://apptail.io/app/heat-index-hi-kzve/madagascar)
- [Mali](https://apptail.io/app/heat-index-hi-kzve/mali)
- [Malta](https://apptail.io/app/heat-index-hi-kzve/malta)
- [Mauritius](https://apptail.io/app/heat-index-hi-kzve/mauritius)
- [Mexico](https://apptail.io/app/heat-index-hi-kzve/mexico)
- [Malaysia](https://apptail.io/app/heat-index-hi-kzve/malaysia)
- [Namibia](https://apptail.io/app/heat-index-hi-kzve/namibia)
- [Nigeria](https://apptail.io/app/heat-index-hi-kzve/nigeria)
- [Nepal](https://apptail.io/app/heat-index-hi-kzve/nepal)
- [New Zealand](https://apptail.io/app/heat-index-hi-kzve/new-zealand)
- [Oman](https://apptail.io/app/heat-index-hi-kzve/oman)
- [Panama](https://apptail.io/app/heat-index-hi-kzve/panama)
- [Peru](https://apptail.io/app/heat-index-hi-kzve/peru)
- [Pakistan](https://apptail.io/app/heat-index-hi-kzve/pakistan)
- [Poland](https://apptail.io/app/heat-index-hi-kzve/poland)
- [Portugal](https://apptail.io/app/heat-index-hi-kzve/portugal)
- [Qatar](https://apptail.io/app/heat-index-hi-kzve/qatar)
- [Saudi Arabia](https://apptail.io/app/heat-index-hi-kzve/saudi-arabia)
- [Sweden](https://apptail.io/app/heat-index-hi-kzve/sweden)
- [Singapore](https://apptail.io/app/heat-index-hi-kzve/singapore)
- [Slovenia](https://apptail.io/app/heat-index-hi-kzve/slovenia)
- [Slovakia](https://apptail.io/app/heat-index-hi-kzve/slovakia)
- [Senegal](https://apptail.io/app/heat-index-hi-kzve/senegal)
- [Thailand](https://apptail.io/app/heat-index-hi-kzve/thailand)
- [Tunisia](https://apptail.io/app/heat-index-hi-kzve/tunisia)
- [Türkiye](https://apptail.io/app/heat-index-hi-kzve/turkey)
- [Ukraine](https://apptail.io/app/heat-index-hi-kzve/ukraine)
- [Uzbekistan](https://apptail.io/app/heat-index-hi-kzve/uzbekistan)
- [Vietnam](https://apptail.io/app/heat-index-hi-kzve/vietnam)
- [United Arab Emirates](https://apptail.io/app/heat-index-hi-kzve/united-arab-emirates)
- [South Africa](https://apptail.io/app/heat-index-hi-kzve/south-africa)
- [Armenia](https://apptail.io/app/heat-index-hi-kzve/armenia)
- [Argentina](https://apptail.io/app/heat-index-hi-kzve/argentina)
- [Austria](https://apptail.io/app/heat-index-hi-kzve/austria)
- [Australia](https://apptail.io/app/heat-index-hi-kzve/australia)
- [Azerbaijan](https://apptail.io/app/heat-index-hi-kzve/azerbaijan)
- [Belgium](https://apptail.io/app/heat-index-hi-kzve/belgium)
- [Bulgaria](https://apptail.io/app/heat-index-hi-kzve/bulgaria)
- [Bahrain](https://apptail.io/app/heat-index-hi-kzve/bahrain)
- [Bermuda](https://apptail.io/app/heat-index-hi-kzve/bermuda)
- [Brunei](https://apptail.io/app/heat-index-hi-kzve/brunei)
- [Brazil](https://apptail.io/app/heat-index-hi-kzve/brazil)
- [Belarus](https://apptail.io/app/heat-index-hi-kzve/belarus)

---

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