Pakistan Ranked Most Polluted Country In 2025 Year

Pakistan was ranked the world's smoggiest country in 2025, with concentrations of hazardous small particles known as PM2.5 up to 13 times higher than the recommended World Health ​Organization level, research showed on Tuesday. 

Swiss air quality monitoring firm IQAir said in ‌its annual report that 13 countries and territories kept average PM2.5 levels at the WHO standard of less than 5 micrograms per cubic metre last year, up



from seven in 2024.

Following are some of the ​findings of the report: In total, 130 out of 143 monitored countries and territories failed ​to meet the WHO guideline.

Bangladesh and Tajikistan were second and third on ⁠the most polluted list. Chad, statistically the smoggiest country of 2024, ranked fourth in 2025, but ​the decline in PM2.5 concentrations last year is likely to be the result of data gaps.