SmogRank / Countries / Hungary / September 2025

Most polluted cities in Hungary, September 2025

10 cities in Hungary ranked by their average PM2.5 over the 30 days. Worst: Debrecen at 12.0 µg/m³, #292 of 2,439 cities in the world. Cleanest: Gyöngyös at 5.7. A city needs measurements on 70% of the days to be ranked.

  1. 1Debrecenlow-cost sensorsHajdú-Bihar
    12.0
  2. 2NyíregyházaSzabolcs-Szatmár-Bereg
    10.6
  3. 3SzegedCsongrád
    9.5
  4. 4GyálPest County
    9.2
  5. 5DunaújvárosFejér
    8.3
  6. 6EsztergomKomárom-Esztergom
    8.1
  7. 7GyőrGyőr-Moson-Sopron
    7.8
  8. 8PécsBaranya
    7.4
  9. 9VeszprémVeszprém
    6.7
  10. 10GyöngyösHeves County
    5.7
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, September 2025 · Hungary now