SmogRank / Countries / Puerto Rico / Cataño

Most polluted cities in Cataño, Puerto Rico

1 measured city, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Cataño at 6.0 µg/m³, #777 in the world.

  1. 1Cataño 6.00.4×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

Updated 2026-10-01 20:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.