SmogRank / World / Greece / January 2025

Most polluted cities in Greece, January 2025

5 cities in Greece ranked by their average PM2.5 over the 31 days. Worst: Thessaloníki at 34.4 µg/m³, #64 of 2,121 cities in the world. Cleanest: Khalándrion at 9.7. A city needs measurements on 70% of the days to be ranked.

← Thessaloníki 34.4 µg/m³ 30 µg/m³0
Every city in Greece ranked for January 2025, 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. 1ThessaloníkiCentral Macedonia
    34.4
  2. 2AsprópyrgosAttica
    20.6
  3. 3AcharnésAttica
    20.0
  4. 4PylaíaCentral Macedonia
    16.1
  5. 5KhalándrionAttica
    9.7
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. 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, January 2025 · Greece now

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SmogRank, most polluted cities in Greece, PM2.5, January 2025, smogrank.com/gr/history/2025-01 (accessed 2 Oct 2026).

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