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Ilocos, Philippines

Halog West · Air quality

Monday, Oct 26 · Asia/Manila

Halog West air quality

US air quality index

57

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
14 µg/m³
PM2.5
18 µg/m³
PM10
22 µg/m³
Ozone
104.3 µg/m³
Nitrogen dioxide
1.3 µg/m³
Sulfur dioxide
3.7 µg/m³
Carbon monoxide
239 µg/m³
European AQI (separate scale)
3