Pollution index (Good, Moderate, Unhealthy, or Very Unhealthy)?
Very unhealthy, unfortunately. Some days are simply awful and you shouldn't even venture outside. When the city gets a breeze, though, things improve. - Dec 2009
Moderate. - Feb 2009
Good to moderate. Some dust from massive ongoing construction and vehicles. Compared to other Asian cities it is good. - Sep 2008
Unhealthy, this is the land of the million motorbikes and an increasing number of automobiles. Many street vendors still use little coal fired cookers, an influence from Vietnam's Chinese dominated past. Add in the industrial pollution from surrounding areas outside the city, and you have an unhealthing situation. - May 2008