Maine, Amerika Serikat
Portland · Kualitas udara
Sabtu, 14 Nov · America/New York
Portland air quality
US air quality index
17Baik
US EPA scale
- Baik0–50Current category
- Sedang51–100
- Tidak sehat bagi kelompok sensitif101–150
- Tidak sehat151–200
- Sangat tidak sehat201–300
- Berbahaya301–500+
A higher US AQI indicates more air pollution and greater health concern. Categories and pollutant concentration units are different measures.
Understand the EPA scaleSemua polutan
- PM1
- 4 µg/m³
- PM2.5
- 6,9 µg/m³
- PM10
- 4 µg/m³
- Ozon
- 19,2 µg/m³
- Nitrogen dioksida
- 11,3 µg/m³
- Sulfur dioksida
- 1 µg/m³
- Karbon monoksida
- 192,3 µg/m³
- European AQI (separate scale)
- 1