Purnia air quality · Bihar, India
After rain, readings often drop sharply within an hour
NAQI 93 (Satisfactory) in Purnia, from 1 CPCB monitoring station. On the US scale that is 151 (Unhealthy).
Updated
Pollutants in Purnia
- PM2.5 · µg/m³56.03.7× WHO limit
- PM10 · µg/m³67.0Under WHO limit
- NO₂ · µg/m³15.3Under WHO limit
- SO₂ · µg/m³12.7Under WHO limit
- CO · mg/m³1.11
Concentrations averaged across the city's stations. WHO multiples use the 2021 24-hour guidelines.
Is it safe outside in Purnia right now?
May cause minor breathing discomfort to sensitive people.
Walking and commuting
Go aheadFine for everyone.
Running and jogging
Take careFine for most; unusually sensitive people should ease the pace.
Cycling
Go aheadFine for everyone.
Children playing outside
Go aheadNo limits for most children.
Older adults and heart or lung conditions
Take careWatch for symptoms such as coughing or breathlessness.
Open windows
Go aheadFine to ventilate.
Mask outdoors
Not neededNot needed.
Air purifier indoors
Not neededOptional.
Based on the US EPA Air Quality Guide, applied to the current NAQI category. If you have symptoms, follow your doctor's advice.
What US AQI 151–200 means for your health →
Purnia air quality history
Daily average, 31 days- 96average daily NAQI over 31 days
- 157worst day, 24 September
- 63cleanest day, 13 September
- 0days at Poor or worse
The last 7 days averaged 102, about the same as the week before (97). None of the last 31 days was Good.
Weather in Purnia
28°C Haze · Humidity 62% · Wind 0 km/h
| Day | Forecast | Max | Min |
|---|---|---|---|
| Mon 19 | Mainly clear sky becoming partly cloudy towards afternoon or evening | 33° | 22° |
| Tue 20 | Mainly clear sky becoming partly cloudy towards afternoon or evening | 33° | 23° |
| Wed 21 | Mainly Clear sky | 32° | 22° |
| Thu 22 | Mainly Clear sky | 32° | 22° |
| Fri 23 | Mainly Clear sky | 33° | 23° |
| Sat 24 | Mainly Clear sky | 32° | 22° |
| Sun 25 | Mainly Clear sky | 32° | 22° |
India Meteorological Department (IMD) city forecast, issued 19 October 2026. All IMD warnings →
Nearby cities
India rankingRelated reading
Purnia air quality: common questions
What is the AQI in Purnia right now?
The NAQI in Purnia is 93 (Satisfactory). On the US AQI scale the same air reads 151 (Unhealthy).
Is it safe to go outside in Purnia today?
Fine for most people. May cause minor breathing discomfort to sensitive people. For runners: Fine for most; unusually sensitive people should ease the pace.
How has air quality in Purnia been recently?
Over the last 31 days with data, Purnia averaged NAQI 96. The worst day was 24 September at 157; the cleanest was 13 September at 63. 0 days were at Poor or worse.
How does Purnia's PM2.5 compare with the WHO guideline?
PM2.5 is 56 µg/m³, about 3.7 times the World Health Organization's 24-hour guideline of 15 µg/m³.
Where does Purnia's air quality data come from?
From State & Central Pollution Control Board, Government of India · Center for Study of Science, Technology and Policy (CSTEP) · Aurassure's University Clean Air Network, using 1 monitoring station in and around the city. Good Air does not estimate or adjust these readings.
Source: State & Central Pollution Control Board, Government of India · Center for Study of Science, Technology and Policy (CSTEP) · Aurassure's University Clean Air Network. Readings are published by the monitoring agency and may be revised.