SmogRank / World / Europe / Switzerland / Ticino
Most polluted cities in Ticino, Switzerland
2 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Lugano at 1.7 µg/m³, #2,624 in the world.
Now: cities by their PM2.5 over the last 24 hours; fires, smoke and ash from Oct 9, the newest day mapped.
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Cleaner or dirtier than 2025
3 cities in Ticino can be compared over 2026 so far (1 January to 8 October) with the same days of 2025: 3 got dirtier and 0 cleaner.
Biggest rises
- Lugano+1.8 µg/m³ (+23%)
- Giubiasco+1.4 µg/m³ (+14%)
- Bellinzona+1.4 µg/m³ (+14%)
Every city in Switzerland, and past years
Estimated: cities without a monitor
Ticino cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Bellinzona | ≈ 13 µg/m³ |
| Locarno | ≈ 14 µg/m³ |
Bad-air episodes in Ticino
- Europe, 1 to 12 March 202612 days532 cities109 µg/m³peak, Radomsko
- Europe, January and February 202612 January to 12 February 2026, 32 days625 cities252 µg/m³peak, Travnik
- Eastern Europe, January 20269 to 10 January 2026, 2 days86 cities210 µg/m³peak, Bijelo Polje
- Europe, December 2025 to January 202625 December 2025 to 2 January 2026, 9 days189 cities110 µg/m³peak, Kempten (Allgäu)
- Italy and Switzerland, October 202514 October 2025, 1 day9 cities46 µg/m³peak, Nichelino
- Italy and Switzerland, August 202512 to 14 August 2025, 3 days11 cities30 µg/m³peak, Winterthur
Times when many cities around here had PM2.5 at twice their usual or more on the same days.
Use this board
SmogRank, most polluted cities in Ticino, Switzerland, PM2.5, last 24 hours to 10 Oct 2026, 04:00 UTC, smogrank.com/ch/region/ticino. Some readings from Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); Love My Air (City and County of Denver), no reuse terms published.
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
Updated 2026-10-10 04:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); Love My Air (City and County of Denver), no reuse terms published (why we use them).