A yellow-alert is now in place in Beijing amid a new round of heavy air pollution.
Authorities are warning Beijing, Tianjin, Hebei and the central and western parts of Shandong are going to be shrouded in heavy air pollution for at least the next three days.
Forecasters are warning the heavy pollution may linger for close to a week, as no weather fronts are expected to help move the pollution out.
Children and the elderly are being advised to stay indoors.
Municipal authorities here in Beijing are asking people to limit their driving and use public transportation.
The current yellow-alert doesn't involve any mandatory actions.
However, if the air pollution alert is upgraded to red, automatic driving restrictions will be imposed and schools will be suspended.
Beyond that, an upgrade to an orange alert is going to prompt a temporary shutdown of industrial facilities.
Since yesterday afternoon, air-quality levels here in the capital have been on a slow but steady decline, with the PM2.5 count as of 6am across most of Beijing sitting well above 300, which is at least 12-times the limit considered safe by the World Health Organization.