SmogRank / World / Europe / Portugal / Setúbal

Most polluted cities in Setúbal, Portugal

1 measured city, this year; 1 above the WHO annual guideline. The only one: Santiago do Cacém at 5.1 µg/m³, #2,568 in the world.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

LisbonPortalegreSantarémSetúbal: 1 measured cityÉvoraBeja#1 Santiago do Cacém: 5.1 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
  1. 1Santiago do Cacémlast full day 20 Sept 0%
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

Estimated: cities without a monitor

Setúbal 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.

City7-day estimateBand
Setúbal≈ 11 µg/m³Moderate
Barreiro≈ 5 µg/m³Good
Sesimbra≈ 10 µg/m³Moderate
Almada≈ 5 µg/m³Good
Arrentela≈ 5 µg/m³Good
Montijo≈ 4 µg/m³Good
Charneca de Caparica≈ 5 µg/m³Good
Quinta Do Conde≈ 10 µg/m³Moderate
Pinhal Novo≈ 7 µg/m³Good
Lavradio≈ 5 µg/m³Good
Caparica≈ 5 µg/m³Good
Laranjeiro≈ 5 µg/m³Good
Piedade≈ 5 µg/m³Good
Azeitão≈ 10 µg/m³Moderate
Moita≈ 7 µg/m³Good
Palmela≈ 8 µg/m³Good

Bad-air episodes in Setúbal

Times when many cities around here had PM2.5 at twice their usual or more on the same days.

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SmogRank, most polluted cities in Setúbal, Portugal, PM2.5, this year to 6 Oct 2026, 22:00 UTC, smogrank.com/pt/region/setubal?w=year.

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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 2026-10-06 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.