Download Hydro

Hydro is made for Android phones. Get the latest version and know your conditions before you step out.

Hydro needs no account. You can use it right after installing, and everything you save stays on your phone.

Install on Android

Download the latest Hydro app from the releases page.
Open the downloaded file and allow installs from your browser if Android asks.
Open Hydro and allow location so it can read the conditions around you.

What you need

An Android phone running Android 8.0 or newer.
An internet connection to fetch live conditions.
Optional: Health Connect and a watch, for gentle suggestions when your heart is working hard in the heat.

What you get

Live heat, UV and air quality on a clean map, with a clear risk level at a glance.
Trip planning for walking, cycling and driving, with advice on water, clothing and timing.
An assistant that answers in plain language, and alerts only when they matter.

New to Hydro? Read the docs for a short tour.