Air quality in Entroncamento, estimated
Santarém, Portugal. No ground monitor we can use is in this city, so these numbers are model estimates, not measurements.
Likely between 3 and 7 µg/m³ (17–39 US AQI): the model's 7-day average to 3 Oct 2026, about 0.3× the WHO 24-hour guideline.
30-day average, estimated: ≈ 4 µg/m³
Model estimate from the Copernicus Atmosphere Monitoring Service (CAMS), scaled by 0.37 to match 7 measured cities within 300 km over the last week. Adjusted this way, a single day lands within ×1.5 of what a monitor would read about two times in three: a guide, not a measurement. Not ranked on SmogRank's boards.
Last 30 days, estimated
Measured cities nearby
| City | Distance | 7-day average |
|---|---|---|
| Riachos | 5 km | – |
| Vieira de Leiria | 60 km | – |
| Lourinhã | 77 km | – |
| Lisbon | 101 km | – |
| Cacém | 106 km | – |
| Amora | 109 km | – |
Estimates contain modified Copernicus Atmosphere Monitoring Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains. How estimates are made.
Use this page
SmogRank, estimated PM2.5 daily means (CAMS model estimate, not measured), Entroncamento, Portugal, 4 Sep 2026 – 3 Oct 2026, smogrank.com/pt/entroncamento (accessed 5 Oct 2026). Contains modified Copernicus Atmosphere Monitoring Service information 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.