Tamil Nadu, India
Velankanni · Kalidad ng hangin
Huwebes, Nob 12 · Asia/Kolkata
Velankanni air quality
US air quality index
81Katamtaman
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
- 18 µg/m³
- PM2.5
- 29 µg/m³
- PM10
- 36 µg/m³
- Osono
- 97.7 µg/m³
- Nitroheno dioksido
- 1 µg/m³
- Asupre dioksido
- 2 µg/m³
- Karbon monoksido
- 259.3 µg/m³
- European AQI (separate scale)
- 4