Singapore is aiming for cleaner air and has set 2020 as the deadline to make this happen.
To work towards this, it has adopted World Health Organization guidelines on air quality as a target.
Until now, Singapore had used these guidelines only as benchmarks.
To achieve cleaner air, more stringent anti-pollution measures for vehicles, refineries and power generation companies will have to be introduced.
In the next two years, for example, the sulphur content of fuels will be pared down.
The National Environment Agency NEA will put information on air quality on its website.