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CNA Explains: Why PSI and AQI readings differ - and which one should you follow during haze season?

While the National Environment Agency uses the 24-hour PSI and 1-hour PM2.5 to track air quality, other online platforms monitor pollution levels differently.

CNA Explains: Why PSI and AQI readings differ - and which one should you follow during haze season?

We haven't written up this one. Channel News Asia has the full story — the link below goes straight to it.

Also reported by 1 other outlet

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