Thoothukudi Air Quality Index (AQI) & Air Pollution Today

Tamil Nadu, India — Real-time Air Quality Index (AQI) and PM2.5

Tuticorin AQI Right Now

33

Category: Good

Dominant Pollutant: pm10

PM2.5: 6.08 µg/m³

PM10: 33.4 µg/m³

Last updated: 2026-03-24 — Data source: Google Air Quality API (NAQI). Live NAQI values load when you visit the page.

Tuticorin Pollutant Levels

PollutantConcentration
PM2.56.08 µg/m³
PM1033.4 µg/m³
O₃ (Ozone)18.35 µg/m³
NO₂12.27 µg/m³
SO₂2.94 µg/m³
CO523.96 µg/m³

Health Advisory — Tuticorin

Good: Minimal impact on health. Great day to be outdoors!

Health Impact — Tuticorin

Cigarette Equivalent: Breathing this air is equivalent to smoking 0.3 cigarettes per day (based on current PM2.5 levels).

Health Recommendations for Tuticorin

  • General Population: Air quality is satisfactory. Enjoy outdoor activities.
  • Elderly: No special precautions needed.
  • Children: Great day for outdoor play.
  • Lung Disease Patients: No restrictions on outdoor activities.

Understanding Tuticorin Air Quality

Tuticorin (officially Thoothukudi), a major port city on the Gulf of Mannar coast in southern Tamil Nadu, carries one of India's most controversial environmental legacies. For decades, the Sterlite Copper smelter - operated by Vedanta Resources - was the city's dominant industrial polluter, emitting SO2, heavy metals (arsenic, lead, copper particulates), and acidic gases that affected surrounding residential areas. Following years of community protests culminating in police firing on demonstrators in May 2018 that killed 13 people, the Tamil Nadu government permanently closed the plant. The closure removed the single largest point source, but the environmental legacy - contaminated soil, groundwater concerns, and residual heavy-metal dust - persists.

Today, Tuticorin's air quality is shaped by the Tuticorin Thermal Power Station (TTPS, 1,050 MW coal-fired), the port's coal and cargo handling operations, and a cluster of chemical industries including salt works, soda ash plants, and heavy chemical units in the SIPCOT industrial area. The dry months (December–March) see the worst air quality as reduced rainfall allows industrial dust and road particulates to accumulate. The port handles significant coal imports, and coal dust from handling and storage creates localised PM10 spikes near the harbour area. PM2.5 during winter peaks typically ranges from 40–70 µg/m³.

The Gulf of Mannar coastline provides natural ventilation through sea breezes that help disperse pollutants, and the monsoon seasons (southwest: June–August, northeast: October–November) bring rainfall that cleanses the atmosphere. The semi-arid climate (annual rainfall ~600 mm) means dry spells can be prolonged. Tuticorin's future air quality trajectory depends on the thermal power station's emission controls, port modernisation to reduce fugitive coal dust, and the ongoing remediation of contamination from the Sterlite era.

Primary Pollution Sources

  • Sterlite copper smelter emissions (now closed)
  • Port emissions
  • Vehicle exhaust
  • Road dust
  • Thermal power plant emissions
  • Chemical industry emissions

Geography: Gulf of Mannar coast; major port city, controversial copper smelter site, thermal power hub, coastal semi-arid climate

Peak pollution months: December, January, February, March

Frequently Asked Questions — Tuticorin

Has Tuticorin's air quality improved since the Sterlite closure?

Yes - the permanent closure of the Sterlite Copper smelter in 2018 removed the city's single largest point source of SO2 and heavy metal emissions. Ambient SO2 levels have decreased significantly, and heavy-metal particulate concentrations have dropped. However, the thermal power station, port operations, and chemical industries continue to contribute to baseline pollution.

How does the port affect Tuticorin's air quality?

Tuticorin's major port handles substantial coal imports and bulk cargo, generating fugitive coal dust during loading, unloading, and storage operations. Diesel emissions from ships, trucks, and cargo-handling equipment add to the port's air quality impact. Areas downwind of the port experience elevated PM10 levels, particularly during dry months when no rainfall suppresses dust.

Air Quality in Nearby Cities