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Hebei, Uchina

Yangjiao · Ubora wa hewa

Alhamisi, 12 Nov · Asia/Shanghai

Yangjiao air quality

US air quality index

127

Hewa yenye madhara kwa makundi nyeti

US EPA scale

  1. Nzuri0–50
  2. Wastani51–100
  3. Hewa yenye madhara kwa makundi nyeti101–150Current category
  4. Hewa yenye madhara151–200
  5. Hewa yenye madhara makubwa201–300
  6. 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 scale

Vichafuzi vyote

PM1
37 µg/m³
PM2.5
40 µg/m³
PM10
42 µg/m³
Ozoni
17 µg/m³
Dioksidi ya nitrojeni
52 µg/m³
Dioksidi ya salfa
31 µg/m³
Monoksidi ya kaboni
867 µg/m³
European AQI (separate scale)
4