# EXTREMA Global — Heat risk & cool routes

> Heat risk & cool routes (iPhone/iPad app by National Observatory of Athens.)

- Source: https://appshunter.io/ios/app/extrema-global/id6756789312 (this page in markdown: same URL + `.md`)
- Developer: [National Observatory of Athens](https://appshunter.io/developer/1158804991)
- Category: Health & Fitness, Weather
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 32 MB
- Languages: American English
- Released: 2025-12-27
- Data updated: 2026-08-29
- User reviews in markdown: https://appshunter.io/ios/app/extrema-global/id6756789312/reviews.md

## What is EXTREMA Global?

EXTREMA Global is a science-based mobile application that provides information on hot summer days, helping users better understand heat exposure and make informed decisions during periods of elevated temperature stress.
Extreme heat is one of the most pressing climate-related risks worldwide, particularly in urban areas. EXTREMA Global translates advanced environmental data into clear, accessible insights that support safer everyday activities during hot conditions.
What EXTREMA Global offers
• Location-aware insights
Heat information is tailored to the user’s location, reflecting local environmental conditions.
• Clear guidance for heat awareness
Practical, easy-to-understand information supports better awareness and precautionary behaviour during extreme heat events.
• Cooling spaces awareness
Identify nearby cooling spaces, such as shaded areas or publicly accessible cool locations, to support safer movement and short stays during hot conditions.
• Cool routes guidance
Explore routes that aim to minimise heat exposure by prioritising shaded streets and cooler urban areas.
• Science-driven design
The app is developed by a research organisation, building on validated environmental data and established scientific methodologies.
 
Who the app is for
EXTREMA Global is designed for:
Citizens seeking reliable information during hot summer days
Professionals working outdoors
Local authorities and organisations interested in situational awareness
Anyone wishing to better understand heat exposure in their area
At the moment the app is available for Athens, Paris, Milan and Rotterdam.
 
Transparency & trust
EXTREMA Global does not provide medical advice.
It is an informational tool intended to support awareness and preparedness during extreme temperature events.
Data sources and methodologies follow scientific best practices, ensuring reliability, clarity, and responsible communication of heat risk.


## Version history (last 4 releases)

### 1.6.1 — 2026-08-27

Routing Algorithms enhancement

### 1.5.31 — 2026-06-21

Routing Algorithms enhancement

### 1.5.28 — 2026-01-06

Street trees for Athens.

### 1.5.5 — 2025-12-27

No release notes.

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## More apps by National Observatory of Athens

- [Seismicity - N.O.A.](https://appshunter.io/ios/app/seismicity-noa/id1596330084)

All apps by National Observatory of Athens: https://appshunter.io/developer/1158804991

## Related topics

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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 2026-08-29.*