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City in Basel-Stadt, Switzerland

Air quality in Basel

Updated October 2026Sources
11PM2.5 µg/m³, yearly

Moderate

The annual average PM2.5 in Basel was 11 µg/m³ in 2021, about 2.2 times the WHO guideline of 5 µg/m³.

Key facts

PM2.5 by year

YearAnnual average
202111 µg/m³
202010 µg/m³
201911 µg/m³
201813 µg/m³
201711 µg/m³
201610 µg/m³
201512 µg/m³

Air quality across Switzerland

PlacePM2.5Level
Bern9 µg/m³Fairly clean
Lausanne9 µg/m³Fairly clean
Zurich10 µg/m³Fairly clean
Geneva10 µg/m³Fairly clean
Lucerne10 µg/m³Fairly clean
Basel11 µg/m³Moderate
Lugano11 µg/m³Moderate

Quick answers

Is the air in Basel bad?

Moderate: 11 µg/m³ of PM2.5 on average, 2.2× the WHO guideline.

How does Basel compare with the rest of Switzerland?

People in Switzerland breathe 8 µg/m³ of PM2.5 on average (2023, World Bank/WHO), against 11 µg/m³ measured here.

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Sources

Annual averages are measured values reported to the WHO; check a live map for today's air. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.