Khagaria Air Quality Index (AQI) & Air Pollution Today

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

Khagaria AQI Right Now

56

Category: Satisfactory

Dominant Pollutant: pm25

PM2.5: 33.2 µg/m³

PM10: 51.89 µg/m³

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

Khagaria Pollutant Levels

PollutantConcentration
PM2.533.2 µg/m³
PM1051.89 µg/m³
O₃ (Ozone)6.52 µg/m³
NO₂2.24 µg/m³
SO₂17.43 µg/m³
CO572.48 µg/m³

Health Advisory — Khagaria

Satisfactory: Minor breathing discomfort to sensitive people.

Health Impact — Khagaria

Cigarette Equivalent: Breathing this air is equivalent to smoking 1.5 cigarettes per day (based on current PM2.5 levels).

Life Expectancy Impact: Sustained exposure at this PM2.5 level could reduce life expectancy by 0.15 years (AQLI estimate, relative to WHO guideline of 5 µg/m³).

Health Recommendations for Khagaria

  • General Population: Acceptable air quality. Unusually sensitive people should limit prolonged outdoor exertion.
  • Elderly: Minor breathing discomfort is possible.
  • Children: Should be fine outdoors with normal activities.
  • Lung Disease Patients: Consider reducing prolonged outdoor exertion.

Understanding Khagaria Air Quality

Khagaria occupies one of the most hydrologically volatile landscapes in India-the confluence zone where the notoriously unpredictable Kosi River meets the Ganges, along with tributaries like the Burhi Gandak and Bagmati. This convergence of major rivers on an almost perfectly flat alluvial plain means Khagaria experiences some of the most catastrophic annual flooding in Bihar, with water levels sometimes rising metres within hours during peak monsoon. The same geography that creates this flood vulnerability also generates the conditions for severe winter air pollution: extreme atmospheric moisture from multiple river surfaces, zero topographic relief, and a population whose flood-damaged infrastructure perpetuates reliance on the most polluting fuel sources.

Winter from November through February is dire for air quality. The multiple rivers' combined moisture output feeds fog of remarkable persistence-there are stretches in December and January when Khagaria sees little direct sunlight for days as fog blankets the landscape from early evening through late morning. Under this cold, stagnant air mass, emissions from household biomass burning concentrate to levels that sting the eyes and throat. Khagaria's poverty rate, elevated even by Bihar's standards due to repeated flood damage, means clean cooking fuel adoption is extremely low. Brick kilns operating on slightly elevated ground-the only land that avoids monsoon submersion-add industrial particulates. Post-harvest burning of rice and maize stubble in November creates a district-wide smoke layer.

When the monsoon arrives in June, it transforms Khagaria into a semi-aquatic landscape. Annual rainfall of 1,200 to 1,500 mm, combined with upstream Kosi and Ganges discharge, inundates vast areas. The air becomes pristinely clean as rainfall scours particulates and warm temperatures prevent any inversions. As floodwaters recede from September onward, a brief clean period ensues before winter closes in. Khagaria's air quality story is inseparable from its flood story-both stem from the same flat, river-dominated geography, and addressing either requires understanding the district's unique hydrological reality.

Primary Pollution Sources

  • Domestic biomass burning
  • Brick kilns
  • Agricultural crop burning
  • Vehicle exhaust
  • Open waste burning

Geography: North Bihar town in the extremely flood-prone Kosi-Ganges confluence zone; low-lying alluvial district with annual inundation and severe winter fog

Peak pollution months: November, December, January, February

Frequently Asked Questions — Khagaria

How does Khagaria's flooding relate to its air quality?

Khagaria's devastating annual floods and its severe winter pollution share the same root cause: the flat, low-lying Kosi-Ganges confluence geography. Floods destroy infrastructure and perpetuate poverty, keeping clean cooking fuel adoption low and biomass burning high. Conversely, the monsoon flooding itself delivers the cleanest air of the year as heavy rainfall scrubs pollutants from the atmosphere. The two extremes are opposite faces of the same geographical coin.

Why is winter fog so persistent in Khagaria?

Khagaria sits at the confluence of the Kosi, Ganges, Burhi Gandak, and Bagmati rivers-creating exceptional atmospheric moisture even in winter. Combined with the flat terrain and radiative cooling, this moisture produces fog so dense and persistent that direct sunlight may not reach ground level for days during December and January. This fog traps ground-level pollutants with devastating effectiveness.

Air Quality in Nearby Cities