Air Quality in Lyon
Lyon sits where the Rhône and Saône valleys funnel traffic from the A7 'autoroute du soleil', and winter inversions trap emissions from the nearby chemical corridor.
📊 AQI Monitoring
ATMO Auvergne-Rhône-Alpes publishes live EAQI data across the Lyon metropolitan area.
Standard: European Air Quality Index (EAQI)
⚠️ Key Pollutants
- Traffic NO2 in the valley
- Winter inversions
- Industrial chemical-valley emissions
- Wood-burning heating
Local Regulations
Lyon operates a Zone à Faibles Émissions (ZFE) restricting older vehicles, under France's Crit'Air scheme.
Understanding air quality in Lyon
Lyon's outdoor air is shaped mainly by traffic no2 in the valley, winter inversions, industrial chemical-valley emissions. These climb during rush hours and settled, still weather when pollutants aren't dispersed — which is why local authorities monitor them closely and enforce the rules above.
Whatever today's index shows on the live data, the air inside your home is typically 2–5× more polluted than outdoors, and it's the part you can actually control. Sizing a MERV‑13 or HEPA purifier to your room is the most reliable way to protect Lyon households on high‑pollution days — use the free ACH calculator to get the size right.
Worried About Lyon Air Quality? Start With Your Home.
EU studies show indoor air can be 2-5x more polluted than outside. For Lyon residents, the smartest long-term investment is clean indoor air — a MERV-13 purifier removes 90%+ of PM2.5, pollen, and pollutants where you spend most of your time.
Shop Clean Air KitsIndoor Air Quality Tips for Lyon
- ✓Use ATMO's live map
- ✓Run a purifier during winter inversions
- ✓Avoid the A7 corridor for exercise
Improve Your Indoor Air Quality
DIY HEPA & MERV air purifiers from €149. Effective, affordable solutions for Lyon residents.
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