Lucknow ranked 11th worst worldwide for PM2.5 in a past global assessment, and regularly crosses "Unhealthy" during winter. This page pulls the current real-time reading — not a vibe, a number.
Children, older adults, and those with heart or lung conditions should limit prolonged outdoor exertion.
Last updated: 2026-06-23 10:00:00 (source: World Air Quality Index)
⚠ This station hasn't reported in 1617 hours — the number above may not reflect current conditions. Likely a gap in WAQI's own network for this station, not this page.
| Pollutant | Index | What it is |
|---|---|---|
| PM2.5 (fine particulate) | 128 | Tiny particles that reach deep into lungs and bloodstream — the pollutant most responsible for health damage here |
| PM10 (coarse particulate) | 91 | Larger dust/soot particles — road dust, construction, biomass burning |
| NO₂ (nitrogen dioxide) | 3 | From vehicle exhaust and combustion — irritates airways, worsens asthma |
| SO₂ (sulfur dioxide) | 3.4 | From burning coal/diesel — linked to respiratory issues, contributes to acid rain |
| CO (carbon monoxide) | 10.8 | From incomplete combustion (traffic, generators) — reduces oxygen delivery in blood |
| O₃ (ozone) | 28.4 | Ground-level ozone — forms from traffic/industrial emissions in sunlight, worsens on hot days |
Daily average, with the min–max band for PM2.5. Click a legend item to toggle a line on/off. Data from WAQI's own short-range forecast model, not a single snapshot.
Why no NO₂, SO₂, or CO line: WAQI's forecast API only ever produces a forward/backward series for PM2.5, PM10, O₃, and UV index. NO₂, SO₂, and CO only ever have a single current-moment reading — there's no trend data to show for them, from this source, at any price.
WAQI doesn't expose a free historical archive — only a short forecast window. So this site started logging its own daily snapshot on today. Every period below becomes real, not synthetic, as the days add up.
Winter (roughly October through January) is when Lucknow's air turns genuinely dangerous — crop-residue burning in neighboring states, Diwali fireworks, and a winter temperature inversion that traps pollutants near ground level all stack together. Monsoon and early summer months are comparatively survivable. A dashboard that only gets checked once looks deceptively fine if that "once" happens to fall in July.
The world's 3 cleanest major cities right now, India's 2 worst, and Lucknow marked for reference — same live data source as the rest of this page.
Zoom out from Lucknow and the national picture is sobering. On the 2026 Environmental Performance Index — a Yale/Columbia assessment that scores 177 countries across environmental health, ecosystem vitality, and climate-change mitigation — India ranked near the very bottom. It is a jarring number to sit next to the live reading at the top of this page, but the two tell the same story from different distances: the air outside my window is not an isolated local failure, it is one data point in a country-wide pattern.
| Pillar | India's rank (of 177) | What it measures |
|---|---|---|
| Overall EPI 2026 | 176 | Composite of all three pillars below |
| Environmental Health | 174 | Air quality, drinking water, sanitation — how the environment affects human health directly |
| Ecosystem Vitality | 171 | Biodiversity, habitat, forests, fisheries — the health of natural systems themselves |
| Climate Change Mitigation | 130 | Emissions trajectory and the pace of decarbonisation |
Climate mitigation (130th) is India's least-bad pillar — low historical per-capita emissions help — while environmental health (174th) is where it hurts most, and where the pollutant readings on this page live.
The report's explanation is depressingly familiar from everything already on this page: poor air quality, continued dependence on coal, weak biodiversity and habitat protection, and rising greenhouse-gas emissions. None of it is new to anyone who has spent a Lucknow winter indoors with the windows shut.
But a ranking is a scoreboard, not a verdict, and it is worth being honest about what it does and does not mean. The real question was never whether India climbs a global table. It is whether 1.4 billion people get to breathe cleaner air, drink safer water, and live around healthier ecosystems — and that outcome is decided far more by construction-dust enforcement, transit choices, and crop-burning coordination (the levers in the sections below) than by any single index number. The rank is useful only as a mirror: it tells us the local fight on this page is the national fight, repeated a few hundred million times over. If that stirs something, the volunteer page is where it turns into a Sunday with gloves on.
The cleanest cities on the chart above aren't clean by accident. Wellington, Reykjavik, Stockholm, and the rest share a few things in common: strict vehicle emissions standards enforced for decades, a heavy share of electricity from hydro/geothermal/wind rather than coal, low industrial density inside city limits, and — often overlooked — geography that helps: coastal wind patterns that constantly flush the air, rather than trap it.
India's worst cities share the opposite pattern, and it isn't one single cause — it's several stacking together: dense vehicular traffic growing faster than road capacity, construction dust from rapid unplanned urban growth, industrial and thermal-power emissions with uneven enforcement of existing norms, open waste burning, and — for North Indian cities specifically — a winter geography problem: crop-residue burning in neighboring states combined with a temperature inversion that traps everything near ground level instead of letting it disperse.
None of this is mysterious — the levers that work elsewhere would work here too. In roughly the order they'd matter:
The honest challenge underneath all of this: several of the biggest levers (crop burning upwind, winter meteorology, the sheer scale of vehicle growth) sit partly or entirely outside any single city's control. That doesn't make local action pointless — construction dust and public transit are fully within Lucknow's own reach — but it does mean the "some months are just worse" pattern from earlier on this page isn't going away without regional-level coordination, not just city-level effort.