SmogRank / Countries / Brazil / June 2026

Most polluted cities in Brazil, June 2026

6 cities in Brazil ranked by their average PM2.5 over the 30 days. Worst: Nilópolis at 28.6 µg/m³, #94 of 1,918 cities in the world. Cleanest: Acari at 9.8. A city needs measurements on 70% of the days to be ranked.

  1. 1NilópolisRio de Janeiro
    28.6
  2. 2Duque de CaxiasRio de Janeiro
    18.3
  3. 3ItaguaíRio de Janeiro
    14.3
  4. 4Barra da TijucaRio de Janeiro
    13.3
  5. 5Rio de JaneiroRio de Janeiro
    10.7
  6. 6AcariRio de Janeiro
    9.8
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, June 2026 · Brazil now