SmogRank / Countries / Brazil / Rondônia
Most polluted cities in Rondônia, Brazil
0 measured cities, last 24 hours.
No city has enough measurements for this window yet.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
Estimated: cities without a monitor
Rondônia 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 |
|---|---|
| Porto Velho | ≈ 26 µg/m³ |
| Ji Paraná | ≈ 15 µg/m³ |
| Vilhena | ≈ 14 µg/m³ |
| Ariquemes | ≈ 17 µg/m³ |
| Cacoal | ≈ 13 µg/m³ |
| Rolim de Moura | ≈ 12 µg/m³ |
| Jaru | ≈ 17 µg/m³ |
| Guajará Mirim | ≈ 20 µg/m³ |
| Machadinho d'Oeste | ≈ 20 µg/m³ |
| Buritis | ≈ 16 µg/m³ |
| Rolim de Moura do Guaporé | ≈ 14 µg/m³ |
| Pimenta Bueno | ≈ 16 µg/m³ |
| Ouro Preto do Oeste | ≈ 15 µg/m³ |
| Nova Mamoré | ≈ 20 µg/m³ |
| Espigão dOeste | ≈ 16 µg/m³ |
| Candeias do Jamari | ≈ 23 µg/m³ |
| São Miguel do Guaporé | ≈ 14 µg/m³ |
| Alta Floresta d'Oeste | ≈ 12 µg/m³ |
| Presidente Médici | ≈ 14 µg/m³ |
| Alto Paraíso | ≈ 19 µg/m³ |
| São Francisco do Guaporé | ≈ 15 µg/m³ |
| Monte Negro | ≈ 16 µg/m³ |
| Cerejeiras | ≈ 11 µg/m³ |
| Colorado do Oeste | ≈ 12 µg/m³ |
Updated 2026-10-01 19:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.