
Garbage is burnt at a dump alongside a road. Photos were taken in the town of Byrnihat, India, on March 28 and 29.
6:20 JST, May 21, 2025
BYRNIHAT, India (Reuters) — Two-year-old Sumaiya Ansari, a resident of India’s Byrnihat town, which is ranked the world’s most polluted metropolitan area by Swiss Group IQAir, was battling breathing problems for several days before she was hospitalized in March and given oxygen support.
She is among many residents of the industrial town on the border of the northeastern Assam and Meghalaya states — otherwise known for their lush, natural beauty — afflicted by illnesses that doctors say are likely linked to high exposure to pollution.
Byrnihat’s annual average PM2.5 concentration in 2024 was 128.2 micrograms per cubic meter, according to IQAir, over 25 times the level recommended by the WHO.
PM2.5 refers to particulate matter measuring 2.5 microns or less in diameter that can be carried into the lungs, causing deadly diseases and cardiac problems.
“It was very scary, she was breathing like a fish,” said Abdul Halim, Ansari’s father, who brought her home from the hospital after two days.
According to government data, the number of respiratory infection cases in the region rose to 3,681 in 2024 from 2,082 in 2022.
“Ninety percent of the patients we see daily come either with a cough or other respiratory issues,” said Dr. J Marak of Byrnihat Primary Healthcare Centre.

Smoke is released from a chimney of a factory.
Residents say the toxic air also causes skin rashes and eye irritation, damages crops and restricts routine tasks like drying laundry outdoors.
“Everything is covered with dust or soot,” said farmer Dildar Hussain.
Critics say Byrnihat’s situation reflects a broader trend of pollution plaguing not just India’s cities, including the capital Delhi, but also its smaller towns as breakneck industrialization erodes environmental safeguards.
Unlike other parts of the country that face pollution every winter, however, Byrnihat’s air quality remains poor through the year, government data indicates.
Home to about 80 industries — many of them highly polluting — experts say the problem is exacerbated in the town by other factors like emissions from heavy vehicles, and its “bowl-shaped topography.”

A cabbage leaf destroyed by soot and dust emitted from factories
“Sandwiched between the hilly terrain of Meghalaya and the plains of Assam, there is no room for pollutants to disperse,” said Arup Kumar Misra, chairman of Assam’s pollution control board.
The town’s location has also made a solution tougher, with the states shifting blame to each other, said a Meghalaya government official who did not want to be named.
Since the release of IQAir’s report in March, however, Assam and Meghalaya have agreed to form a joint committee and work together to combat Byrnihat’s pollution.
"Science & Nature" POPULAR ARTICLE
-
Indonesian Woman Turns to Mangroves to Fend off Rising Tides
-
Bite Marks Reveal Gladiator’s Fatal Encounter with Lion in Roman Britain
-
Japan Unveils Urashima 8000 Underwater Drone Capable of Diving 8,000 Meters Under the Sea
-
3 of Japan’s Nuclear Fusion Institutes to Receive ¥10 Billion in Funding, as Govt Aims to Speed Up Research
-
VR Footage Reproducing Tower of the Sun As Seen at Osaka Expo ’70 on Display at Kawasaki Museum
JN ACCESS RANKING
-
Core Inflation in Japan’s Capital Sharply Accelerates in April
-
U.S. Holds Fire Over Yen Exchange Rate Targets; Bessent Said to Understand Negative Impact on Markets
-
Rents Mark 30-Year-High Rate of Rise; Decrease in Disposable Income May Dampen Personal Consumption
-
Japanese Govt Mulls Raising Number of Cars to be Imported Under Simplified Screen System in U.S. Tariff Negotiations
-
Japan Must Boost Its ‘Indispensability,’ Urges JETRO Chair; Convince United States That Cooperation Will Be Beneficial