Islands, Hong Kong
Cheung Chau · Air quality
Thursday, Nov 5 · Asia/Hong Kong
Cheung Chau air quality
US air quality index
76Moderate
US EPA scale
- Good0–50
- Moderate51–100Current category
- Unhealthy for sensitive groups101–150
- Unhealthy151–200
- Very unhealthy201–300
- Hazardous301–500+
A higher US AQI indicates more air pollution and greater health concern. Categories and pollutant concentration units are different measures.
Understand the EPA scaleAll pollutants
- PM1
- 21 µg/m³
- PM2.5
- 27 µg/m³
- PM10
- 31 µg/m³
- Ozone
- 23.7 µg/m³
- Nitrogen dioxide
- 52 µg/m³
- Sulfur dioxide
- 30.7 µg/m³
- Carbon monoxide
- 295.3 µg/m³
- European AQI (separate scale)
- 3