Dibrugarh Air Quality Index (AQI) & Air Pollution Today
Assam, India — Real-time Air Quality Index (AQI) and PM2.5
Dibrugarh AQI Right Now
Category: Good
Dominant Pollutant: pm10
PM2.5: 13.06 µg/m³
PM10: 27.33 µg/m³
Last updated: 2026-03-24 — Data source: Google Air Quality API (NAQI). Live NAQI values load when you visit the page.
Dibrugarh Pollutant Levels
| Pollutant | Concentration |
|---|---|
| PM2.5 | 13.06 µg/m³ |
| PM10 | 27.33 µg/m³ |
| O₃ (Ozone) | 21 µg/m³ |
| NO₂ | 19.06 µg/m³ |
| SO₂ | 2.53 µg/m³ |
| CO | 338.78 µg/m³ |
Health Advisory — Dibrugarh
Good: Minimal impact on health. Great day to be outdoors!
Health Impact — Dibrugarh
Cigarette Equivalent: Breathing this air is equivalent to smoking 0.6 cigarettes per day (based on current PM2.5 levels).
Life Expectancy Impact: Sustained exposure at this PM2.5 level could reduce life expectancy by 0.02 years (AQLI estimate, relative to WHO guideline of 5 µg/m³).
Health Recommendations for Dibrugarh
- 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 Dibrugarh Air Quality
Dibrugarh, known as the Tea City of India, sits on the southern bank of the Brahmaputra River in upper Assam, surrounded by some of the world's most productive tea estates. The city serves as the commercial hub for Assam's tea industry, and dozens of tea processing factories in and around the district release wood-smoke and withering-trough emissions during the peak processing seasons (March–June and September–November). The nearby Digboi oil refinery — India's oldest, operating since 1901 — and the Indian Oil Corporation's pipeline terminus add petroleum-related emissions to the airshed.
Winter months (November–February) bring the worst air quality as temperature inversions develop over the Brahmaputra valley, trapping emissions from vehicles, domestic biomass cooking fires common in lower-income settlements, and brick kilns along the river's floodplain. Dense fog along the Brahmaputra creates a moisture-laden atmospheric layer that keeps fine particulates suspended at breathing height for extended morning hours. PM2.5 levels can reach the Poor range during January, though conditions remain less severe than in cities of the Indo-Gangetic Plain.
The monsoon (June–September) delivers dramatic improvement, with over 2,500mm of annual rainfall washing the atmosphere clean and keeping AQI in the Good range. Dibrugarh's surrounding tea gardens — with their dense foliage canopy — act as natural air filters, providing a green buffer that most Indian cities lack. The Brahmaputra's broad river valley provides natural ventilation when wind patterns are favourable, particularly during pre-monsoon convective events.
Primary Pollution Sources
- Vehicle exhaust
- Tea factory emissions
- Oil refinery emissions (Digboi nearby)
- Brick kilns
- Waste burning
- Domestic biomass burning
Geography: Upper Assam on the Brahmaputra River; tea capital of India, oil-producing region, subtropical alluvial plain surrounded by tea gardens
Peak pollution months: November, December, January, February
Frequently Asked Questions — Dibrugarh
How does the tea industry affect Dibrugarh's air quality?
Dibrugarh's tea factories release wood-smoke from fuel-fired dryers and withering-trough emissions during peak processing seasons. While individual factory emissions are modest, the concentration of dozens of units across the district creates a cumulative impact on ambient PM levels. However, the surrounding tea garden canopy also acts as a natural air filter, partially offsetting factory emissions.
When is the cleanest air in Dibrugarh?
July through September during the peak monsoon offers the cleanest air, with over 2,500mm of annual rainfall providing thorough atmospheric cleansing. AQI remains in the Good range throughout this period. The worst air quality occurs in December and January when Brahmaputra valley inversions and dense fog trap winter emissions.
Air Quality in Nearby Cities
- Jorhat AQI — Assam
- Itanagar AQI — Arunachal Pradesh
- Dimapur AQI — Nagaland
- Kohima AQI — Nagaland
- Tezpur AQI — Assam
- Imphal AQI — Manipur