Cuddalore Air Quality Index (AQI) & Air Pollution Today
Tamil Nadu, India — Real-time Air Quality Index (AQI) and PM2.5
Cuddalore AQI Right Now
Category: Good
Dominant Pollutant: pm10
PM2.5: 2 µg/m³
PM10: 17 µg/m³
Last updated: 2026-03-24 — Data source: Google Air Quality API (NAQI). Live NAQI values load when you visit the page.
Cuddalore Pollutant Levels
| Pollutant | Concentration |
|---|---|
| PM2.5 | 2 µg/m³ |
| PM10 | 17 µg/m³ |
| O₃ (Ozone) | 14.47 µg/m³ |
| NO₂ | 2.61 µg/m³ |
| SO₂ | 2.21 µg/m³ |
| CO | 384.25 µg/m³ |
Health Advisory — Cuddalore
Good: Minimal impact on health. Great day to be outdoors!
Health Impact — Cuddalore
Cigarette Equivalent: Breathing this air is equivalent to smoking 0.1 cigarettes per day (based on current PM2.5 levels).
Health Recommendations for Cuddalore
- 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 Cuddalore Air Quality
Cuddalore's air quality bears the heavy imprint of its industrial history, particularly the SIPCOT chemical complex that has been the subject of longstanding environmental justice concerns. The concentration of chemical manufacturing units, pharmaceutical plants, and petroleum storage facilities creates a complex mixture of industrial emissions including volatile organic compounds, sulfur dioxide, and particulate matter. The coastal location means industrial plumes often blow inland during sea breeze periods, affecting residential areas that developed too close to the industrial zone. Winter months see the worst pollution episodes as thermal inversions trap industrial emissions and port-related diesel truck traffic close to ground level.
The port activities generate diesel emissions from cargo handling equipment and truck traffic transporting chemicals and petroleum products. Coastal humidity creates hazy conditions that reduce visibility and can facilitate secondary pollutant formation. The cyclone-prone location means the city experiences both weather-related air quality improvements during storm systems and industrial safety concerns when severe weather threatens chemical facilities. Summer months bring relief from stagnant air conditions but introduce dust from port operations and construction activities. The historical pollution burden has created significant health concerns in communities near the SIPCOT estate, making Cuddalore a focal point for environmental health activism in Tamil Nadu. The challenge of balancing industrial employment with public health protection remains central to the city's development trajectory.
Primary Pollution Sources
- SIPCOT chemical industry
- Petroleum refinery emissions
- Pharmaceutical manufacturing
- Port-related diesel traffic
- Coastal humidity and salt particles
Geography: Major port town with controversial SIPCOT chemical industrial estate, petroleum storage facilities, and frequent cyclone exposure as coastal city on Bay of Bengal.
Peak pollution months: November, December, January, February
Frequently Asked Questions — Cuddalore
Why is Cuddalore's SIPCOT industrial estate controversial?
The SIPCOT chemical complex has been associated with environmental pollution concerns for decades, with chemical manufacturing, pharmaceutical, and petroleum facilities releasing emissions that have impacted nearby residential communities and raised health concerns.
How does coastal location affect Cuddalore's air quality?
Sea breezes can transport industrial emissions inland toward residential areas, while coastal humidity creates hazy conditions and potentially facilitates formation of secondary pollutants; cyclones bring both air quality relief and industrial hazard concerns.
Air Quality in Nearby Cities
- Puducherry AQI — Puducherry
- Panruti AQI — Tamil Nadu
- Villupuram AQI — Tamil Nadu
- Chidambaram AQI — Tamil Nadu
- Tindivanam AQI — Tamil Nadu
- Sirkali AQI — Tamil Nadu