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Air Quality
FREN
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Air Quality
FREN
Air quality · Worldwide

What you breathe, at a glance.

Your city's index in real time, the pollutants behind the number, and the weather that explains it. A level, an explanation, a piece of advice. No account, no sign-up.

Download on theApp Store Coming soon toGoogle Play

Available on iPhone, coming soon to Android.

  • Real-time index
  • Detailed pollutants
  • Forecasts
  • Map and ranking
  • Pollen
  • No account
The weather that explains it
Alerts that warn you

A number — and above all, what it means

An index with no explanation is of little use. The app tells you where today's pollution comes from, what it changes for you, and when to head outside.

The index, in real time

Your city's level, continuously updated, with the pollutant responsible and its concentration: fine particles, nitrogen dioxide, ozone, sulphur dioxide.

The weather that explains it

Wind disperses particles, heat manufactures ozone, rain washes the air. A discreet strip ties each change in the index to its cause, in one sentence.

Map and ranking

A pollution layer over the map, monitoring stations where they exist, and a ranking of cities around the world to place your own.

Today's pollen

Alder, birch, grass, mugwort, olive, ragweed: the level for each family, so you can see the difficult days coming.

Alerts that warn you

A notification when the air degrades in one of your cities — and another when it turns good again. You set the threshold, the app keeps watch.

Forecasts

The coming days, with the best window to run or air the place. The history of your readings, exportable as CSV.

  • Good
  • Fair
  • Moderate
  • Poor
  • Very poor
  • Extreme

What you see when you open the app

The app's home screen: Paris, poor air, level 4 of 6, ozone dominant, 26 degrees, 7 km/h wind, and the advice to avoid intense effort outdoors.
Forecast screen: five days, each split into twenty-four hours coloured from red to green.
The days ahead

Day by day, hour by hour, and the moment the air becomes breathable again.

Best window card: between 9am and 12pm, fair level, and today's breathed dose.
The right time

The window to go out, and what you have breathed in since this morning.

List of the six pollutants with their concentration and the World Health Organization guideline.
The six pollutants

Every concentration, set against the World Health Organization guideline.

Map with a pollution layer over the terrain, and named cities around Paris.
The map

Pollution seen from the sky, anywhere in the world.

Three steps, and you're set

1

Open the app

No account to create, no email to give. Allow location, or simply pick a city: the index appears.

2

Understand the day

The level, the pollutant responsible, the weather behind it and a clear piece of advice: go out now, or rather this evening.

3

Keep an eye on it

Put a widget on your home screen, follow your cities, and let alerts warn you when the air changes.