Wales, United Kingdom
Trefriw · Kalidad ng hangin
Sabado, Nob 7 · Europe/London
Trefriw air quality
US air quality index
44Mabuti
US EPA scale
- Mabuti0–50Current category
- Katamtaman51–100
- Masama sa kalusugan ng mga sensitibong grupo101–150
- Masama sa kalusugan151–200
- Lubhang masama sa kalusugan201–300
- Mapanganib301–500+
A higher US AQI indicates more air pollution and greater health concern. Categories and pollutant concentration units are different measures.
Understand the EPA scaleLahat ng Polutante
- PM1
- 12 µg/m³
- PM2.5
- 13 µg/m³
- PM10
- 14 µg/m³
- Osono
- 4 µg/m³
- Nitroheno dioksido
- 11 µg/m³
- Asupre dioksido
- 1 µg/m³
- Karbon monoksido
- 179 µg/m³
- European AQI (separate scale)
- 2