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Kwai Tsing District, Hong Kong

Kwai Chung · Air quality

Wednesday, Nov 4 · Asia/Hong Kong

Kwai Chung air quality

US air quality index

72

Moderate

US EPA scale

  1. Good0–50
  2. Moderate51–100Current category
  3. Unhealthy for sensitive groups101–150
  4. Unhealthy151–200
  5. Very unhealthy201–300
  6. 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 scale

All pollutants

PM1
22 µg/m³
PM2.5
31 µg/m³
PM10
36 µg/m³
Ozone
31.7 µg/m³
Nitrogen dioxide
62 µg/m³
Sulfur dioxide
31.7 µg/m³
Carbon monoxide
310.3 µg/m³
European AQI (separate scale)
3