Erode Air Quality Index (AQI) & Air Pollution Today

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

Erode AQI Right Now

38

Category: Good

Dominant Pollutant: pm25

PM2.5: 22.73 µg/m³

PM10: 37.27 µg/m³

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

Erode Pollutant Levels

PollutantConcentration
PM2.522.73 µg/m³
PM1037.27 µg/m³
O₃ (Ozone)15.25 µg/m³
NO₂15.19 µg/m³
SO₂4.75 µg/m³
CO809.29 µg/m³

Health Advisory — Erode

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

Health Impact — Erode

Cigarette Equivalent: Breathing this air is equivalent to smoking 1 cigarettes per day (based on current PM2.5 levels).

Life Expectancy Impact: Sustained exposure at this PM2.5 level could reduce life expectancy by 0.08 years (AQLI estimate, relative to WHO guideline of 5 µg/m³).

Health Recommendations for Erode

  • 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 Erode Air Quality

Erode, situated on the banks of the Cauvery River in western Tamil Nadu's Kongu Nadu region, is known as the Turmeric City of the World and the Textile City of Tamil Nadu. Its air quality is shaped by two dominant industries: textile dyeing and turmeric processing. Hundreds of dyeing and bleaching units along the Cauvery and Noyyal rivers release chemical vapours, acid fumes, and dye particulates, while the massive turmeric market - the largest in Asia - generates organic dust during sorting, grinding, and auctioning of raw turmeric. Together, these create a unique industrial pollution signature distinct from typical Indian cities.

The semi-arid Kongu Nadu climate means Erode receives less rainfall (600–700mm annually) than coastal Tamil Nadu, limiting the monsoon's cleansing effect. The driest months (January–March) see peak dust levels as wind-blown soil from surrounding agricultural lands combines with urban road dust and industrial emissions. Temperature inversions are less severe than in northern India, but the Cauvery valley topography can trap pollutants during calm winter mornings, pushing PM2.5 into the Moderate to Poor range.

The northeast monsoon (October–December) provides the primary atmospheric cleansing, though Erode receives less rainfall from this system than cities further east. Agricultural burning of sugarcane fields and coconut farm residue in surrounding rural areas adds seasonal smoke during harvest periods. Despite its industrial profile, Erode's year-round warm temperatures ensure strong convective mixing during daytime, preventing the severe stagnation events seen in IGP cities. Overall air quality hovers between Satisfactory and Moderate for most of the year.

Primary Pollution Sources

  • Vehicle exhaust
  • Textile dyeing emissions
  • Road dust
  • Turmeric processing dust
  • Construction dust
  • Agricultural burning

Geography: Cauvery River bank in western Tamil Nadu; major textile and turmeric trading centre, semi-arid Kongu Nadu region

Peak pollution months: December, January, February, March

Frequently Asked Questions — Erode

How does the textile dyeing industry affect Erode's air quality?

Erode's textile dyeing and bleaching units - concentrated along the Cauvery and Noyyal riverbanks - release chemical vapours from reactive dyes, acid fumes from bleaching processes, and fine dye particulates that become airborne during fabric handling. While the dyeing industry's primary environmental impact is water pollution (for which Erode is nationally notorious), the air emissions contribute to localised VOC and PM2.5 levels, particularly in industrial clusters around Perundurai and Bhavani.

Does turmeric processing affect air quality in Erode?

Yes - Erode's turmeric market, the largest in Asia, handles thousands of tonnes of raw turmeric during auction season (January–May). The sorting, grading, and grinding of dried turmeric rhizomes generates fine organic dust containing curcumin particles. Workers and nearby residents are exposed to this dust, which can irritate airways. While turmeric dust is less toxic than industrial particulates, the concentration around market areas can noticeably elevate localised PM10 readings.

Air Quality in Nearby Cities