New Delhi, Delhi · Live air quality
We show New Delhi's air the moment a fresh CPCB station reports.
New Delhi Air Quality Index (AQI) Today
Live air quality in New Delhi, Delhi — real-time AQI, dominant pollutant, PM2.5 & PM10 levels and a plain-English health advisory, computed from CPCB data.
We publish a live "safe to go out" answer for New Delhi as soon as a fresh CPCB station reading is available.
24-hour AQI graph
We record this city's AQI every hour — the 24-hour intraday graph fills in over the next day as readings accumulate.
7-day AQI trend
We're recording daily readings for this city — the 7-day trend chart fills in over the coming days as history accumulates.
Air quality calendar
A colour-coded calendar of daily air quality builds here as we record each day — check back as the month fills in.
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AQI categories (India scale)
| AQI | Category | Associated health impact |
|---|---|---|
| 0–50 | Good | Air quality is considered satisfactory and air pollution poses little or no risk. |
| 51–100 | Satisfactory | Acceptable air quality; minor breathing discomfort possible for unusually sensitive people. |
| 101–200 | Moderate | May cause breathing discomfort to people with lung disease such as asthma, and to children and older adults. |
| 201–300 | Poor | May cause breathing discomfort to most people on prolonged exposure. |
| 301–400 | Very Poor | May cause respiratory illness on prolonged exposure; effects more pronounced for people with lung and heart disease. |
| 401–500 | Severe | Affects healthy people and seriously impacts those with existing diseases; avoid outdoor activity. |
About air quality in New Delhi
This page tracks the New Delhi Air Quality Index using measurements from Central Pollution Control Board (CPCB) monitoring stations, published through the Government of India's open-data portal. The AQI is a single number from 0 to 500 that summarises how polluted the air is and what it means for health, based on the concentrations of key pollutants — fine particulate matter (PM2.5), coarse particulate matter (PM10), nitrogen dioxide (NO₂), ground-level ozone (O₃), carbon monoxide (CO) and sulphur dioxide (SO₂).
Air quality in New Delhi changes through the day and across seasons. Levels are typically worse in the early morning and late evening when cooler, calmer air traps pollutants near the ground, and across North India they rise sharply in winter (roughly October to February) when temperature inversions, crop-residue burning and festival activity combine. Summer and the monsoon usually bring cleaner air as rain washes out particulates and stronger winds disperse them. Checking the current reading before outdoor exercise, a school run or a commute helps you decide whether to adjust timing, wear a mask, or keep windows closed.
We only display a number when a recent station reading exists — if you see "data updating", it means we are waiting on a fresh value rather than showing an estimate.
Frequently asked questions
What is the AQI in New Delhi today?
We show New Delhi's AQI whenever a fresh CPCB station reading is available; live data is updating.
Is it safe to go outside in New Delhi today?
We publish a live "safe to go out" answer for New Delhi as soon as a fresh CPCB station reading is available.
What is the main pollutant in New Delhi?
The dominant pollutant is shown once live data is available.
How is New Delhi's AQI calculated?
Each pollutant's 24-hour concentration is converted to a sub-index using CPCB breakpoints; the city AQI is the highest sub-index. See our methodology.