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Recently, a strange news story has been widely discussed: Tehran (Iran’s capital) had better air quality than some Indian cities even during the ongoing war. Data showed Tehran’s Air Quality Index (AQI) was around 50–70 (good to moderate), while cities like New Delhi recorded over 120 or more (poor to unhealthy) on the same days.
This surprised many people because Iran was experiencing war and fires at oil depots, which created large smoke clouds and even “black rain” in some areas. Despite this, air-quality measurements still showed cleaner air in Tehran compared with several Indian cities.
Experts say the main reason is long-term pollution sources in India, not the temporary smoke from the war. Many Indian cities have heavy traffic, industrial emissions, construction dust, crop burning, and weather conditions that trap pollution in the air. These factors keep pollution levels high for long periods.
Another reason is geography and climate. North Indian cities like Delhi are in a region where winds are sometimes weak and pollutants get trapped, especially during certain seasons. This makes pollution levels stay high even without unusual events.
In simple terms, the news looked strange because people expect a war zone to have worse air, but the comparison actually shows how serious everyday air pollution can be in some Indian cities. Even though Iran had war-related smoke, its temporary pollution was still sometimes lower than the long-term pollution seen in parts of India.
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