A walkthrough of JanVayu
A tour of what janvayu.in is and how to use it: why India's air is a public-health emergency, the live data behind every ward, what today's air means for your body and the economy, how we track the promises and the money, and how every number stays fact-checked.
The 10-minute overview
The essentials, tightly edited, with hand-drawn diagrams. Perfect for a first look or a quick share.
Long — the deep diveThe full, section-by-section tour
A slide for essentially every panel on the site, grouped into eight chapters. Built to train a newsroom or brief a class.
Previewing the short overview below — or open either deck above.
Navigate with ←/→, toggle speaker notes with S, the slide overview with O, and fullscreen with F. You can link to any slide (e.g. deck.html#/4), and print the deck straight to PDF.
Prefer a file? Download either deck — short: PDF · PPTX | full tour: PDF · PPTX (speaker notes included). Regenerated from these decks with scripts/export-walkthrough.mjs, so they never drift from the site.
What's inside
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1
The emergency, in one numberIndia breathes the world's most dangerous air — the mortality, the life-years lost, and where the country ranks.
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2
A public record, not a campaignWhat JanVayu is, who runs it, and why it stays non-partisan and citizen-led.
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3
Independent sources, made usefulHow raw feeds from CPCB, WAQI, WHO, CREA and others become one clear picture of your air.
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4
The live pictureReal-time PM2.5 for 157 cities, a boundary atlas covering every place in India, rankings, trends and forecasts — and what today's air means for you.
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5
Not just a lung problemWhat PM2.5 does to the heart, brain, kidneys and unborn children — the health story beyond the cough.
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6
The bill nobody seesHow dirty air drains the economy — lost workdays, GDP, and the cost of doing nothing.
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7
Following the promises & the moneyNCAP, budget tracking, political accountability and the scorecards that hold governments to their targets.
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8
The AQI hides five pollutantsWhat the single AQI number actually rolls up, and why the components matter.
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9
Everything in one placeThe full toolbox — calculators, Ask JanVayu, learning games, RTI assistant and more.
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10
Every number, fact-checked — weeklyHow an automated audit re-verifies every statistic on the site against primary sources, every Monday.
About this walkthrough
Navigate with the arrow keys, press S for speaker notes, O for the slide overview, F for fullscreen, and use your browser's Print for a clean one-slide-per-page PDF.
For live figures — current AQI, rankings, budget spend — click through to the site rather than the slides; those update in real time. The deck is licensed under CC BY-NC-SA 4.0 like the rest of JanVayu content. Dated claims (the NCAP deadline of 31 March 2026, the IQAir 2025 World Air Quality Report, the Lancet Countdown 2025) are anchored to their primary sources in the Research Library.