England, Ufalme wa Muungano
Elstree · Ubora wa hewa
Jumapili, 15 Nov · Europe/London
Elstree air quality
US air quality index
52Wastani
US EPA scale
- Nzuri0–50
- Wastani51–100Current category
- 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
- 6 µg/m³
- PM2.5
- 7 µg/m³
- PM10
- 8 µg/m³
- Ozoni
- 19 µg/m³
- Dioksidi ya nitrojeni
- 15 µg/m³
- Dioksidi ya salfa
- 2 µg/m³
- Monoksidi ya kaboni
- 200 µg/m³
- European AQI (separate scale)
- 2