Gansu, China
Siheyuan · Kalidad ng hangin
Lunes, Nob 16 · Asia/Shanghai
Siheyuan air quality
US air quality index
53Katamtaman
US EPA scale
- Mabuti0–50
- Katamtaman51–100Current category
- 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
- 5 µg/m³
- PM2.5
- 14 µg/m³
- PM10
- 56 µg/m³
- Osono
- 43 µg/m³
- Nitroheno dioksido
- 3 µg/m³
- Asupre dioksido
- 2 µg/m³
- Karbon monoksido
- 147 µg/m³
- European AQI (separate scale)
- 2