---
title: "HeatAlert: Heat Stress Index — App Overview"
url: https://marlvel.ai/intel-report/weather/heatalert-heat-stress-index
category: Weather
developer: WeatherFlow
platforms: ios, android
rating: 3.6 (13 ratings)
pricing: free
report_level: overview
generated: 2026-04-13
last_verified: "2026-04-17T20:36:34.272Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** HeatAlert provides hyper-local heat stress monitoring by integrating real-time data from the Tempest weather station network.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Weather |
| Rating | 3.6 ★ (13) |
| Pricing | free |
| Platforms | iOS, Android |
| Latest Version (iOS) | 1.5.5 |
| Latest Version (Android) | 1.5.5 |
| Developer | WeatherFlow |

<!-- SECTION: Summary -->
## What is HeatAlert: Heat Stress Index?

HeatAlert is a weather utility that provides real-time Wet Bulb Globe Temperature (WBGT) data to help users monitor heat stress risks. Developed by WeatherFlow, the app leverages a network of over 65,000 Tempest Weather Systems to deliver hyper-local environmental insights. It is designed to assist individuals in making informed safety decisions during high-heat conditions.

<!-- SECTION: Key Features -->
## Key Features

- **Precise WBGT Values**: Calculates Wet Bulb Globe Temperature using real-time data from nearby Tempest Weather Systems.
- **Location-Based Weather Insights**: Provides localized forecasts including temperature, humidity, wind speed, and UV index.
- **Heat Stress Risk Assessment**: Evaluates environmental conditions to help users assess and mitigate heat-related health risks.

<!-- SECTION: Target Audience -->
## Who is it for?

Outdoor enthusiasts, athletes, and individuals seeking to monitor heat-related health risks in their immediate environment.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/heatalert-heat-stress-index/id6475117114?uo=4)
- [Google Play](https://play.google.com/store/apps/details?id=earth.tempest.app.heat&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/intel-report/weather/heatalert-heat-stress-index)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/weather/heatalert-heat-stress-index).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*