Velankanni Air Quality Index (AQI) & Air Pollution Today

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

Velankanni AQI Right Now

13

Category: Good

Dominant Pollutant: pm10

PM2.5: 6.96 µg/m³

PM10: 13.3 µg/m³

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

Velankanni Pollutant Levels

PollutantConcentration
PM2.56.96 µg/m³
PM1013.3 µg/m³
O₃ (Ozone)31.6 µg/m³
NO₂1.55 µg/m³
SO₂1.55 µg/m³
CO233.51 µg/m³

Health Advisory — Velankanni

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

Health Impact — Velankanni

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

Health Recommendations for Velankanni

  • 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 Velankanni Air Quality

Velankanni's air quality is exceptional compared to most Tamil Nadu towns due to its direct coastal location and limited industrial activity. Strong sea breezes from the Bay of Bengal provide continuous air circulation year-round. The northeast monsoon from October to December brings heavy rainfall and the cleanest air quality. However, this coincides with the peak pilgrimage season, as devotees visit during the annual festival in late August-September and continue through the Christmas season, creating temporary spikes in vehicular emissions.

The post-monsoon period from December to February sees the worst relative air quality, though it remains better than inland towns. While agricultural burning occurs in areas 10-20 km inland, coastal winds generally keep this smoke from affecting Velankanni directly. The main pollution sources during this period are increased vehicle traffic from pilgrims and construction activities related to expanding tourism infrastructure. Small-scale fishing operations contribute minimal emissions from diesel boats and fish processing.

Summer months from March to May bring hot, humid conditions with temperatures around 32-35°C, moderated by constant sea breezes. Pilgrimage traffic remains high through Easter season (March-April), maintaining vehicle emissions. The small size of the town (population around 11,000) means minimal local pollution generation. The southwest monsoon from June to September brings moderate rainfall and excellent air quality, with reduced tourist numbers. Overall, Velankanni enjoys some of the best air quality in the Cauvery Delta region due to its coastal exposure and lack of industry.

Primary Pollution Sources

  • Vehicular emissions
  • Fishing boats
  • Construction
  • Tourism activities
  • Marine operations

Geography: Coastal Catholic pilgrimage center, home to the Basilica of Our Lady of Good Health, major religious tourism destination.

Peak pollution months: November, December, January, February

Frequently Asked Questions — Velankanni

How does pilgrimage tourism affect Velankanni's air quality?

Peak pilgrimage seasons (late August through December, and Easter in March-April) bring increased vehicle traffic that temporarily elevates emissions. However, the town's coastal location with strong sea breezes helps disperse vehicle exhaust, limiting the overall impact on air quality.

Why does Velankanni have better air quality than other delta towns?

Velankanni's location directly on the coast provides constant sea breeze circulation that disperses pollutants. The town has no industries, limited local emissions, and coastal winds prevent agricultural smoke from inland areas from significantly affecting air quality.

Air Quality in Nearby Cities