SmogRank / World / Portugal / Lisbon / November 2023
Most polluted cities in Lisbon, Portugal, November 2023
3 cities in Lisbon, Portugal ranked by their average PM2.5 over the 30 days. Worst: Cacém at 8.7 µg/m³, #914 of 2,194 cities in the world. Cleanest: Lourinhã at 5.1. A city needs measurements on 70% of the days to be ranked.
About 0 people in this city breathed unhealthy air on an average day of November 2023.
Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.
- 1Lisbon 0
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
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SmogRank, most polluted cities in Lisbon, Portugal, PM2.5, November 2023, smogrank.com/pt/region/lisbon/history/2023-11 (accessed 6 Oct 2026).
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.