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North District, Hong Kong

Sheung Shui · Air quality

Sunday, Nov 15 · Asia/Hong Kong

Sheung Shui air quality

US air quality index

96

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
24 µg/m³
PM2.5
25 µg/m³
PM10
25 µg/m³
Ozone
27 µg/m³
Nitrogen dioxide
40 µg/m³
Sulfur dioxide
34.3 µg/m³
Carbon monoxide
377.3 µg/m³
European AQI (separate scale)
4