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Sha Tin, Hong Kong

Sun Tin Wai · Air quality

Tuesday, Nov 10 · Asia/Hong Kong

Sun Tin Wai air quality

US air quality index

63

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
10 µg/m³
PM2.5
11 µg/m³
PM10
11 µg/m³
Ozone
39 µg/m³
Nitrogen dioxide
19 µg/m³
Sulfur dioxide
14.3 µg/m³
Carbon monoxide
294 µg/m³
European AQI (separate scale)
2