Słupsk reports an annual PM2.5 of 9.2 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Compared across Poland
Słupsk: 9.2 µg/m³. Typical range in Poland: 11.9–15.8 µg/m³. Low anchor: Ustka, 8.1 µg/m³. High anchor: Sosnowiec, 19.7 µg/m³.
296 cities tracked