EXTREMA Global
Heat risk & cool routes
Free · Designed for iPad. Not verified for macOS.
Stay Informed during extreme heat. EXTREMA Global delivers free real-time heat risk information, cooling spaces, cool routes and practical guidance for everyday safety.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Routing Algorithms enhancement
The developer, National Observatory of Athens, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- National Observatory of Athens
- Size
- 33.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 11.0 or later.
- iPhone
Requires iOS 11.0 or later. - iPad
Requires iPadOS 11.0 or later. - iPod touch
Requires iOS 11.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Contains
Unrestricted Web Access
Health or Wellness Topics
- Copyright
- © National Observatory of Athens, Greece