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Citizen air-quality platform

JanVayu जनवायु

India’s air, made visible — live data, the health toll, the money, and the tools, for every citizen. A walkthrough.

janvayu.inNon-partisan · citizen-led · open source · free forever
The problem

India breathes the world’s most dangerous air

1.72M
ambient PM2.5 deaths a year
(Lancet Countdown 2025)
3.5 yrs
average life-expectancy lost
(AQLI 2025)
48.9
µg/m³ national average — ~10× the WHO guideline (IQAir 2025)

India is 6th most polluted country; Loni is the world’s most polluted city. The crisis is year-round, not just winter.

janvayu.in
What it is

A public record, not a campaign

  • Non-partisan & citizen-led — names problems and sources, endorses no party.
  • Built on public data — CPCB, WAQI, OpenAQ, NASA, Open-Meteo.
  • Open & free forever — anyone can read, reuse or improve it; no ads.
  • Every figure sourced & fact-checked — weekly, against primary sources.

JanVayu turns India’s scattered air-quality data into one record any citizen, journalist, or policymaker can actually use — and keeps it honest.

janvayu.in
Under the hood

Independent sources, made useful

How JanVayu worksindependent sources, verified, made usefulLIVE DATA SOURCESCPCB CAAQMSWAQIOpenAQ + sensorsNASA FIRMSOpen-MeteoJANVAYU ENGINEVerifyComputeContextualizeCITIZEN TOOLSLive PM2.5 - 157 citiesAsk JanVayu (AI)Forecast + firesRTI + rightsAlerts + open APIevery figure sourced + open - no ads - free forever
janvayu.inindependent public feeds → verified → made useful
Live air

Real-time PM2.5 for 157 cities

  • Live dashboard — refreshes every 10 minutes.
  • Station-level map — across India, colour-coded.
  • City rankings — cleanest & most polluted, now / 7-day / 30-day.
  • 5-day forecast & fire tracker — will it be bad tomorrow?

Pick your source (CPCB, WAQI, IQAir, community sensors) — JanVayu explains why they differ instead of hiding it.

janvayu.in
For you

What today’s air means for you

  • Cigarettes/day equivalent — today’s air, made tangible.
  • Disease-risk read-out — asthma, heart, respiratory, children.
  • What to do today — masks, purifiers, go-outside advice.
  • Alerts — push & email when your threshold is crossed.

The live number, translated into what it does to a body — and what to do about it right now.

janvayu.in
Health

Not just a lung problem

How PM2.5 travels through your bodyparticles ~30× smaller than a hair — small enough to cross into the bloodPM2.5 you breathe inBrainstroke · dementia · cognitionHeartheart attack · irregular rhythmKidneyslower eGFR (2026 cohort)Lungsasthma · COPD · lung cancerBloodstreamparticles cross into the bloodPregnancypreterm · low birth weightNot just a lung problem — PM2.5 reaches nearly every organ in the body.
janvayu.inPM2.5 crosses into the blood and reaches nearly every organ
The money

The bill nobody sees

How dirty air drains the economyone polluted year, three ways it drains India’s economyPM2.5pollutionPremature deathslost lifetime earningsIllness & sick daysweaker output at workHealthcare billstreatment, out of pocketTHE BILL$36.8 bnevery year≈ 1.36% of GDPOn broader measures the cost reaches $339 billion — about 9.5% of GDP. Source: Lancet Countdown 2025.Every rupee here is avoidable — clean air is economic policy, not only health policy.
janvayu.in$36.8bn/yr (1.36% GDP) — up to $339bn (9.5%) on broader measures
Accountability

Following the promises & the money

  • NCAP & GRAP trackers — targets, deadlines, stage history.
  • Budget tracker — per-city NCAP spend, CREA-sourced.
  • One-click RTI — pre-filled Right-to-Information templates.
  • City scorecards — who’s acting, who isn’t.

Only 27 of 96 cities with sufficient data met the NCAP 40% PM10 target by the 2026 deadline (CREA). The record is public.

janvayu.in
Learn the number

The AQI hides five pollutants

How the AQI number is builtone index, six pollutants — it always reports the worst6 POLLUTANTS, each measuredPM2.5306PM10182NO₂88SO₂41CO64O₃112take the MAX(the worst sub-index)THE AQI NUMBER306Very PoorTwo cities both at "200" can have completely different air — the label hides which pollutant is driving it.
janvayu.intwo cities both at “200” can have completely different air
The toolbox

Everything in one place

  • Ask JanVayu — AI answers in 10 languages, with sources.
  • Learning games & walkthrough — for classrooms and newcomers.
  • Photo gallery & testimony wall — the human record, 14 languages.
  • Open Data API — every dataset, free with attribution.
  • Boundary atlas, 983,149 areas — your neighbourhood at any level, nine measures each, plus a district-level “this year so far”; your MP’s air on the map.
  • Every village in India — all 584,615, each with an annual PM2.5 figure.
  • Installable app + push alerts — works offline.
janvayu.in
Trust

Every number, fact-checked — weekly

  • Automated weekly audit — every statistic re-verified against primary sources.
  • Public findings — corrections logged in the open repository.
  • Never invent — unverifiable figures are flagged, not guessed.

Clean air is a right — the case for it never needs an exaggerated number. If a figure looks off, tell us; being corrected in public is the point.

janvayu.in
Independent · open · free forever

Clean air is not a privilege.
It is a right.

Explore it, use the data, add your voice — or contribute at github.com/JanVayu/JanVayu.

janvayu.incontribute@janvayu.in
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Speaker notes