Region in Leiria District, Portugal
Air quality in Silver Coast
Fairly clean
The annual average PM2.5 in Silver Coast was 6.4 µg/m³ in 2024, about 1.3 times the WHO guideline of 5 µg/m³. Summer wildfires inland can bring smoke for a few days.
Key facts
- PM2.5: 6.4 µg/m³ yearly average (2024). Measured at Sao Bartolomeu, 17 km away.
- PM10: 15.3 µg/m³ (2024).
- Nitrogen dioxide: 5.2 µg/m³ (2024), mostly from traffic.
- Recent average: 6.4 µg/m³ over the last five years of measurements.
PM2.5 by year
| Year | Annual average |
|---|---|
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2020 | |
| 2019 | |
| 2019 | |
| 2018 | |
| 2018 |
Air quality across Portugal
| Place | PM2.5 | Level |
|---|---|---|
| Algarve | 2.9 µg/m³ | Meets the WHO guideline |
| Faro | 2.9 µg/m³ | Meets the WHO guideline |
| Madeira | 5 µg/m³ | Meets the WHO guideline |
| Douro Valley | 5 µg/m³ | Meets the WHO guideline |
| Silver Coast | 6.4 µg/m³ | Fairly clean |
| Sintra | 7.4 µg/m³ | Fairly clean |
| Cascais | 7.4 µg/m³ | Fairly clean |
| Azores | 7.4 µg/m³ | Fairly clean |
| Porto | 8 µg/m³ | Fairly clean |
| Lisbon | 9 µg/m³ | Fairly clean |
Quick answers
Is the air in Silver Coast bad?
Fairly clean: 6.4 µg/m³ of PM2.5 on average, 1.3× the WHO guideline.
When is the air worst in Silver Coast?
Summer wildfires inland can bring smoke for a few days.
How does Silver Coast compare with the rest of Portugal?
People in Portugal breathe 9 µg/m³ of PM2.5 on average (2023, World Bank/WHO), against 6.4 µg/m³ measured here.
More about Silver Coast
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Sources
- WHO Ambient Air Quality Database
- WHO air quality guidelines (2021)
- Live air quality map (WAQI)
- Prontos Coworking, Caldas da Rainha
- Rede Expressos
- CP: Oeste line service update
- Serviço Nacional de Saúde (SNS 24)
Annual averages are measured values reported to the WHO; check a live map for today's air. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.