24 hrs avg AQI
Major Air Pollutants in Yuen Long
The current PM2.5 concentration in Yuen Long is ✓below the recommended limit given by the WHO 24 hrs air quality guidelines value.
Oct 1, 2020
Oct 1, 2020
Explore an insightful air pollution data for last 24 hrs, 7 days & 1 month
24 hrs avg AQI
Quick answers to some commonly asked questions about the air pollution of Yuen Long.
The real-time AQI in this city is 35 (GOOD) now. This was last updated 1 hour ago .
The current concentration of PM2.5 at Yuen Long is 6 (µg/m³). The World Health Organisation (WHO) recommends 25 µg/m³ as the threshold concentration of PM2.5. Currently, the concentration is 0.24 times the recommended limit.
Generally, the air quality at Yuen Long starts deteriorating in late October. The winters are the worst-hit season in terms of air pollution.
You should wear a good N95 mask when you go outdoor in Yuen Long until the AQI is improving upto moderate range.
Office going people should avoid personal vehicles and use public transportations or carpooling.
(i) The primary causes of outdoor air pollution are solid, liquid particles called aerosols & gase from vehicles emissions, construction activities, factories, burning stubble & fossil fuels and wildfire, etc.
(ii) Main causes of indoor air pollution are harmful gases from cooking fuels (such as wood, crop wastes, charcoal, coal and dung), damp, mould smoke, chemicals from cleaning materials, etc.
Indoor air pollution in Yuen Long is as dangerous as outdoor pollution, because the air pollutants come inside the houses or buildings through doors, windows and ventilation.
In Yuen Long, you must use an air purifier or fresh air machine at home or office indoor and close all the doors, windows and ventilations when the outdoor air quality index (aqi) in Yuen Long is very high. Proper ventilation is highly recommended only when outdoor air quality is improving and moderate AQI range.
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Here are the top resources that you can go through to find out more about air quality.