West Virginia, Marekani
Alderson · Ubora wa hewa
Ijumaa, 6 Nov · America/New York
Alderson air quality
US air quality index
26Nzuri
US EPA scale
- Nzuri0–50Current category
- Wastani51–100
- Hewa yenye madhara kwa makundi nyeti101–150
- Hewa yenye madhara151–200
- Hewa yenye madhara makubwa201–300
- Hatari301–500+
A higher US AQI indicates more air pollution and greater health concern. Categories and pollutant concentration units are different measures.
Understand the EPA scaleVichafuzi vyote
- PM1
- 4 µg/m³
- PM2.5
- 8.2 µg/m³
- PM10
- 4 µg/m³
- Ozoni
- 24.8 µg/m³
- Dioksidi ya nitrojeni
- 3 µg/m³
- Dioksidi ya salfa
- 1.3 µg/m³
- Monoksidi ya kaboni
- 159.7 µg/m³
- European AQI (separate scale)
- 1