SmogRank / World / Portugal / February 2023

Most polluted cities in Portugal, February 2023

7 cities in Portugal ranked by their average PM2.5 over the 28 days. Worst: Paredes at 20.6 µg/m³, #131 of 1,175 cities in the world. Cleanest: Ponta Delgada at 7.3. A city needs measurements on 70% of the days to be ranked.

OpenAQ's archive, where our readings come from, has almost none for 25 of these 28 days. Cities in the United States and Europe have them from the EPA's and the European Environment Agency's own records of the same monitors; many cities elsewhere are missing from this board, not clean. Why.

← Paredes 20.6 µg/m³ 20 µg/m³0
Every city in Portugal ranked for February 2023, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1ParedesPorto
    72
  2. 2AmoraSetúbal
    65
  3. 3CacémLisbon
    55
  4. 4FunchalMadeira
    53
  5. 5LisbonLisbon
    52
  6. 6CorroiosSetúbal
    48
  7. 7Ponta DelgadaAzores
    41
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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

All cities in the world, February 2023 · Portugal now

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SmogRank, most polluted cities in Portugal, PM2.5, February 2023, smogrank.com/pt/history/2023-02 (accessed 2 Oct 2026).

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