PHNOM PENH -- The Cambodian government has begun releasing daily air quality readings after farmland fires sent pollution levels soaring across much of the country.
Phnom Penh branded as the world's second most polluted city

Phnom Penh is cloaked in particulate matter as it suffers some of the world's worst air pollution on Feb. 2. (Photo by AFP/Jiji)
PHNOM PENH -- The Cambodian government has begun releasing daily air quality readings after farmland fires sent pollution levels soaring across much of the country.