The city’s PM2.5 readings remained below 40 micrograms per cubic meter between yesterday afternoon and 8am this morning, but the foggy weather caused the PM2.5 figure to shoot up afterwards.
PM2.5 stands for airborne particles smaller than 2.5 micrometers, which mainly come from automobile emissions and smoke from power plants and factories. They are the main cause of urban smog and haze and are harmful to human health.
- Beijing air quality to be better monitored (guardian.co.uk)
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- Beijing completes network of air quality monitors (ctvnews.ca)
- Beijing to give clearer indication of air quality (sfgate.com)
- anchor Beijing-Washington rift on air quality measurement (thehimalayantimes.com)
- Beijing completes air quality monitoring system (kansascity.com)
- Beijing Completes Air Quality Monitoring System (abcnews.go.com)
- Beijing sets up air quality monitors (todayonline.com)
- Beijing’s PM2.5 monitoring network releases complete data (wantchinatimes.com)