Sitamarhi · Live air quality
You're looking at Sitamarhi's air right now — AQI 81, satisfactory, driven by PM10.
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Sitamarhi Air Quality Index (AQI) Today
Live air quality in Sitamarhi, — real-time AQI, dominant pollutant, PM2.5 & PM10 levels and a plain-English health advisory, computed from CPCB data.
Yes — air quality in Sitamarhi is satisfactory today (AQI 81). Outdoor activity is generally fine.
Where 81 sits on the India CPCB scale
Sitamarhi air quality forecast
22°C · wind 4 km/hLight winds (4 km/h) and calm air are letting pollution build up near the ground.
Hourly AQI forecast for the next 24 hours (CPCB scale).
Cleanest air today is forecast around 20:00 (AQI 223) — a good window for outdoor time.
Forecast modelled by Open-Meteo and converted to the CPCB scale. Forecasts are estimates and can change — our live readings above are measured.
What you can do outside right now
General guidance by AQI band. Sensitive groups should act one level earlier.
Live pollutant levels
Each pollutant's 24-hour concentration is converted to a CPCB sub-index; the city AQI is the highest of them (the dominant pollutant). Bars show the sub-index out of 500.
24-hour AQI graph
min 79 · max 84Hourly AQI recorded each hour by DailyAQI (local time). Fills to a rolling 24 hours.
7-day AQI trend
Daily peak AQI recorded by DailyAQI since tracking began, coloured by category. History grows to a rolling 30 days.
Air quality calendar
Worst recorded day: 2026-10-23 (AQI 376) · cleanest: 2026-10-31 (AQI 21)
Each cell is a day, coloured by that day’s peak AQI band. Only days we have recorded are shown; the grid fills out over the month.
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What Satisfactory air means for you
Acceptable air quality; minor breathing discomfort possible for unusually sensitive people.
Health guidance per CPCB National Air Quality Index bands. Informational only — not medical advice.
India's metro cities right now
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. |
Monitoring location
Approximate location of the monitoring station(s) feeding this reading. Map © OpenStreetMap.
About air quality in Sitamarhi
This page tracks the Sitamarhi Air Quality Index using measurements from a Central Pollution Control Board (CPCB) monitoring station, published through the Government of India's open-data portal. Right now Sitamarhi's AQI is 81 (Satisfactory), with PM10 the dominant pollutant. The AQI is a single number from 0 to 500 that summarises how polluted the air is and what it means for health, built from pollutants such as fine particulate matter (PM2.5), coarse particulate matter (PM10), nitrogen dioxide, ground-level ozone and sulphur dioxide — the index reflects whichever is worst at the time.
How Sitamarhi's air changes through the year
Air quality in Sitamarhi changes through the day and across the seasons. Levels are usually worse in the early morning and late evening when cooler, calmer air traps pollutants near the ground, and they tend to rise in the cooler months when inversions are more common; the monsoon typically brings the cleanest air as rain washes particulates away.
What drives air pollution in Sitamarhi
Traffic, construction and road dust, industry and the burning of solid fuels are the main local sources, with regional factors and winter weather adding to the load when the air is calm.
Best time to visit Sitamarhi for cleaner air
For the cleanest air, the monsoon and the months just after it are usually best in Sitamarhi, while the driest, stillest weeks can be worse. Check the live reading on this page before outdoor exercise or sightseeing, and keep an N95 mask handy for high-pollution days. Nearby cities with comparatively cleaner air right now include Madikeri, Srinagar, Thoothukudi.
Staying safe in Sitamarhi's air
When the AQI is in the Good or Satisfactory range, outdoor activity is fine for almost everyone. From Moderate upward, sensitive groups — children, older adults, pregnant people and anyone with asthma or heart disease — should pace themselves outdoors, and once the air turns Poor or worse it is sensible for everyone to limit strenuous outdoor exertion, keep windows closed, run an air purifier indoors and wear a well-fitting mask outside. This is general information rather than medical advice. We only display a number when a recent station reading exists — if you see "data updating", we are waiting on a fresh value rather than showing an estimate.
Air quality near Sitamarhi
The nearest monitored cities to Sitamarhi, with their live AQI — tap any card for its full report.
Protect your health — air quality guides
Frequently asked questions
What is the AQI in Sitamarhi today?
The current Air Quality Index in Sitamarhi is 81 (Satisfactory) on the Indian CPCB scale, with PM10 as the dominant pollutant.
Is it safe to go outside in Sitamarhi today?
Yes — air quality in Sitamarhi is satisfactory today (AQI 81). Outdoor activity is generally fine.
What is the main pollutant in Sitamarhi?
Today the dominant pollutant driving Sitamarhi's AQI is PM10. The full pollutant breakdown (PM2.5, PM10, NO₂, O₃, CO, SO₂) is listed above.
How is Sitamarhi'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.
What is the air quality forecast for Sitamarhi tomorrow?
Air in Sitamarhi is forecast to improve tomorrow to around AQI 312 (Very Poor), down from about 365 today. Forecasts are modelled estimates (Open-Meteo) and can change.