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Switzerland AQI Analytics

OpenAQ-derived PM2.5 and PM10 history for 33 cities, mapped to AQI Now city pages and normalized to the US EPA AQI scale.

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Cities
33

with OpenAQ history

Locations
62

mapped monitors

Daily rows
8,276

2024-01-01 to 2024-12-31

Avg EPA AQI
31

11.8 ug/m3 PM2.5

Current data story

The highest average AQI in this pilot slice is Hochdorf, with an EPA AQI average of 77 and PM2.5 around 24.1 ug/m3. Its worst month is November.

Source: OpenAQ local parquet plus raw CSV coordinate recovery. Build 2026-05-12T00:27:56.105574+00:00.

Country average
31
US EPA scale
PM2.5 11.8 ug/m3 · PM10 12.5 ug/m3

Analytics tools

Cities ranked by average AQI

CityAvg AQIPM2.5Worst monthTrendCoverage
Hochdorf
Luzern, Switzerland
7724.1 ug/m3Novembern/a34 days · 1 locations
Aarau
Aargau, Switzerland
6517.8 ug/m3Decembern/a163 days · 1 locations
Allschwil
Basel-Landschaft, Switzerland
6418.4 ug/m3Decembern/a114 days · 1 locations
Langenthal
Bern, Switzerland
5413.6 ug/m3Decembern/a221 days · 1 locations
Opfikon
Zurich, Switzerland
5113.2 ug/m3Novembern/a364 days · 2 locations
Morges
Vaud, Switzerland
5013.4 ug/m3Decembern/a116 days · 1 locations
Dübendorf
Zurich, Switzerland
4811.7 ug/m3Decembern/a364 days · 4 locations
Bern
Bern, Switzerland
4811.3 ug/m3Decembern/a296 days · 3 locations
Bellinzona
Ticino, Switzerland
4710.9 ug/m3Decembern/a255 days · 1 locations
Zurich
Zurich, Switzerland
4711.5 ug/m3Novembern/a364 days · 7 locations
Riehen
Basel-Stadt, Switzerland
4610.8 ug/m3Januaryn/a363 days · 3 locations
Oberwingert
Zurich, Switzerland
429.5 ug/m3Decembern/a313 days · 1 locations
Binningen
Basel-Landschaft, Switzerland
408.6 ug/m3Januaryn/a254 days · 1 locations
Lugano
Ticino, Switzerland
398.7 ug/m3Januaryn/a273 days · 4 locations
Kreuzlingen
Thurgau, Switzerland
388.1 ug/m3Novembern/a325 days · 1 locations
Payerne
Vaud, Switzerland
347.0 ug/m3Decembern/a256 days · 1 locations
Winterthur
Zurich, Switzerland
3316.8 ug/m3Decembern/a245 days · 3 locations
Sursee
Luzern, Switzerland
264.8 ug/m3Januaryn/a209 days · 1 locations
Ostermundigen
Bern, Switzerland
1912.0 ug/m3Decembern/a227 days · 3 locations
Küssnacht
Schwyz, Switzerland
173.2 ug/m3Junen/a256 days · 1 locations
Geneva
Geneva, Switzerland
13n/a ug/m3Januaryn/a237 days · 2 locations
Basel
Basel-Stadt, Switzerland
12n/a ug/m3Januaryn/a257 days · 2 locations
Fully
Valais, Switzerland
11n/a ug/m3Decembern/a254 days · 1 locations
Lucerne
Luzern, Switzerland
11n/a ug/m3Januaryn/a229 days · 2 locations

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