# OSHA-NIOSH Heat Safety Tool

> Real-time heat safety tool with forecasts and occupational health recommendations. (iPhone/iPad app by Centers For Disease Control and Prevention.)

- Source: https://appshunter.io/ios/app/osha-niosh-heat-safety-tool/id1239425102 (this page in markdown: same URL + `.md`)
- Developer: [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253)
- Category: Weather, Health & Fitness
- Price: Free
- Rating: 2.60/5 from 314 App Store ratings · 119 written reviews indexed
- Age rating: 12+
- Requires: iOS 12.0 · 50 MB
- Languages: American English, European Spanish
- Released: 2017-05-24
- Data updated: 2026-09-02
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/osha-niosh-heat-safety-tool/id1239425102/reviews.md

## What is OSHA?

Take precautions against outdoor heat while at work with the OSHA-NIOSH Heat Safety Tool. Featuring real-time heat index and hourly forecasts, specific to your location, as well as occupational safety and health recommendations from OSHA and NIOSH. The OSHA-NIOSH Heat Safety Tool is a useful resource for planning outdoor work activities based on how hot it feels throughout the day. 

The OSHA-NIOSH Heat Safety Tool features:

• A visual indicator of the current heat index and associated risk levels specific to your current geographical location

• Precautionary recommendations specific to heat index-associated risk levels

• An interactive, hourly forecast of heat index values, risk level, and recommendations for planning outdoor work activities in advance

• Editable location, temperature, and humidity controls for calculation of variable conditions

• Signs and symptoms of heat-related illnesses including: heat stroke, heat exhaustion, rhabdomyolysis, heat cramps, and heat rash

• First aid information for heat-related illnesses 

Take steps to work safely in the heat. Download this valuable tool today!

## Key features

- Real-time heat index and risk levels
- Hourly heat index forecast
- Occupational safety recommendations
- Heat-related illness symptoms
- First aid for heat illnesses
- Customizable conditions

## Chart rankings

- #16 in Top Free · Weather (US App Store)

## What do users think of OSHA?

Overall sentiment: negative

**Pros**

- 💡 Valuable tool for heat safety
- 👍 Useful and informative
- 👍 Precise and accurate
- 👍 Great for tracking heat index
- 👍 Helpful precautionary and first aid information
- 👍 Available in Spanish

**Cons**

- 🐛 Crashes or doesn't load data
- 🐛 Inaccurate or inconsistent temperature/heat index readings
- 🐛 Doesn't work in Canada
- 🐛 Frequent errors or connection issues
- 🐛 Doesn't update or refresh properly
- 🐛 Unreliable or not user-friendly

**Commonly reported bugs**

- App crashes on launch
- Fails to load weather data
- Closes immediately after opening
- Doesn't work with latest iOS version
- Location function doesn't work

**Most requested features**

- Add UV index
- Provide notifications or alarms for heat index thresholds
- Include OSHA heat safety guidelines and training
- Add support for entering custom location data
- Develop a watch app with notifications

## Recent user reviews (10 of 119)

All indexed reviews: https://appshunter.io/ios/app/osha-niosh-heat-safety-tool/id1239425102/reviews.md

### 1/5 — Garbage

*2026-06-30, version 3.7*

Doesnt work, will just copy the temp

### 1/5 — Too aggressive

*2026-05-14, version 3.7*

65f = Potentially Dangerous? Get real.

### 1/5 — STOP ASKING FOR LOCATION

*2026-04-30, version 3.7*

If an app asks for location and the user says NO then the app should honor being told no! Obnoxiously it pops up every few seconds!

### 5/5 — Valuable !!

*2025-06-21, version 3.7*

It’s a the right Tool!
It’s useful and I’m smarter dealing with the heat. 
( I’m proactively plan for this summer heat wave)

### 2/5 — Not updating/Loading

*2025-06-20, version 3.7*

App was perfect with location and temperatures. I loved the gauge to tell you if you were in danger or needed to take precaution. The past week it has not loaded or updated. Please fix.

### 5/5 — Great tool for everyone

*2024-08-02*

I travel the country and have referred to this app in many places.
It is always precise, accurate and very helpful.
I love the precautionary, symptom and fist aide tabs…..
Also available in Spanish so communication is not an issue.
Love it and share it with everyone!

### 5/5 — Works for me

*2024-08-01*

I work outside , middle of day, middle of summer every year all year. Have had this app for about 5 months now and it is my go to. Allows me to avoid days that are in extreme, shows what symptoms to look out for in heat related health issues and what to do when they happen. Breaks it down hourly, the temp and “feels like” categories. It overall I like this app.

### 2/5 — Constant Errors

*2024-07-31*

Ironically this app only seems to work when you aren’t in a danger zone for heat index. I use this app for work and every time time we check around noon or when we know the heat index should be high the app has an error. I have it two stars because when the app works it’s very good, but in an error state you can’t even look at the other tabs like symptoms.

### 5/5 — It’s been updated

*2024-07-19*

Had an issue that wouldn’t allow me to open it. It’s fixed now so everything’s kosher on my end

**Developer response:** Recently, this app experienced issues with the connection to the weather data source that is used in this app. We have released an update which will identify this issue should it occur again. The app should now be functioning again. We appreciate your understanding as we work to improve the app.

### 1/5 — Needs a lot of work

*2024-07-07, version 3.5*

Concept is great, but only having hourly forecast and not realtime does not help.

## Frequently asked questions about OSHA

### What does the OSHA-NIOSH Heat Safety Tool do?

This app provides real-time heat index information and hourly forecasts tailored to your location to help outdoor workers take precautions against heat. It also offers occupational safety and health recommendations from OSHA and NIOSH.

### What are the key features of the Heat Safety Tool?

Key features include a visual indicator of the current heat index and risk levels, hourly forecasts with recommendations, customizable controls for temperature and humidity, and information on signs, symptoms, and first aid for heat-related illnesses.

### Is the OSHA-NIOSH Heat Safety Tool free to use?

Yes, the OSHA-NIOSH Heat Safety Tool is a free application. It does not have any in-app purchases or advertisements.

### Who is the target audience for this app?

The app is designed for individuals working outdoors and employers who need to plan work activities safely in hot conditions. It's a valuable resource for anyone concerned about heat-related risks in the workplace.

### What kind of heat-related illnesses does the app cover?

The app details signs and symptoms of several heat-related illnesses, including heat stroke, heat exhaustion, rhabdomyolysis, heat cramps, and heat rash. It also provides information on appropriate first aid for these conditions.

## Version history (last 5 releases)

### 3.7 — 2025-01-06

• Update to newest NOAA Weather API

### 3.6 — 2024-12-03

• Fix to avoid possible API outage

### 3.5 — 2024-06-24

•Support for updated NOAA API
•Fixed bug when displaying text in dark mode

### 3.4.2 — 2024-05-21

Detects errors related to issues with the NOAA weather data source

### 3.4.1 — 2023-05-23

Additional notification for certain extreme heat conditions

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## More apps by Centers For Disease Control and Prevention

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All apps by Centers For Disease Control and Prevention: https://appshunter.io/developer/439259253

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*