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Central Luzon, Philippines

Santa Ignacia · Air quality

Thursday, Nov 5 · Asia/Manila

Santa Ignacia air quality

US air quality index

53

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
13 µg/m³
PM10
16 µg/m³
Ozone
19.7 µg/m³
Nitrogen dioxide
8.3 µg/m³
Sulfur dioxide
2 µg/m³
Carbon monoxide
212.7 µg/m³
European AQI (separate scale)
2