SmogRank / Countries / Brazil / Maranhão
Most polluted cities in Maranhão, Brazil
0 measured cities ranked by PM2.5, this year.
No city has enough measurements for this window yet.
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data
Estimated: cities without a monitor
Maranhão cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| São Luís estimated | ≈ 8 µg/m³ |
| Imperatriz estimated | ≈ 9 µg/m³ |
| São José de Ribamar estimated | ≈ 8 µg/m³ |
| Timon estimated | ≈ 11 µg/m³ |
| Caxias estimated | ≈ 9 µg/m³ |
| Paço do Lumiar estimated | ≈ 8 µg/m³ |
| Codó estimated | ≈ 10 µg/m³ |
| Açailândia estimated | ≈ 8 µg/m³ |
| Bacabal estimated | ≈ 10 µg/m³ |
| Balsas estimated | ≈ 12 µg/m³ |
| Barra do Corda estimated | ≈ 15 µg/m³ |
| Santa Inês estimated | ≈ 8 µg/m³ |
| Pinheiro estimated | ≈ 7 µg/m³ |
| Chapadinha estimated | ≈ 7 µg/m³ |
| Grajaú estimated | ≈ 13 µg/m³ |
| Itapecuru Mirim estimated | ≈ 7 µg/m³ |
| Barreirinhas estimated | ≈ 6 µg/m³ |
| Coroatá estimated | ≈ 7 µg/m³ |
| Tutóia estimated | ≈ 7 µg/m³ |
| Santa Luzia estimated | ≈ 8 µg/m³ |
| Vargem Grande estimated | ≈ 7 µg/m³ |
| Buriticupu estimated | ≈ 9 µg/m³ |
| Viana estimated | ≈ 7 µg/m³ |
| Coelho Neto estimated | ≈ 8 µg/m³ |
| São Bento estimated | ≈ 7 µg/m³ |
| Presidente Dutra estimated | ≈ 10 µg/m³ |
| Lago da Pedra estimated | ≈ 8 µg/m³ |
| Rosário estimated | ≈ 7 µg/m³ |
| Santa Helena estimated | ≈ 7 µg/m³ |
| Tuntum estimated | ≈ 10 µg/m³ |
| Amarante do Maranhão estimated | ≈ 9 µg/m³ |
| Colinas estimated | ≈ 10 µg/m³ |
| Zé Doca estimated | ≈ 7 µg/m³ |
| Araioses estimated | ≈ 7 µg/m³ |
| São Mateus do Maranhão estimated | ≈ 8 µg/m³ |
| Turiaçu estimated | ≈ 7 µg/m³ |
| Pedreiras estimated | ≈ 9 µg/m³ |
| Santa Rita estimated | ≈ 7 µg/m³ |
| Brejo estimated | ≈ 7 µg/m³ |
| Parnarama estimated | ≈ 12 µg/m³ |
Updated 2026-10-01 14:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.