What is the air quality trend in Purnia?

Over the past 8 days, Purnia had an average AQI of 126 based on station measurements. The worst day was 2026-10-21 with AQI 138.

How is Purnia air quality measured?

Air quality in Purnia is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Purnia, India

Name: Purnia Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Purnia, India.

116

Current AQI
Unhealthy for sensitive groups CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 4 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	138	138–138	50.5 µg/m³	2h	4
2026-10-20	131	123–139	47.6 µg/m³	24h	4
2026-10-19	127	122–131	46.2 µg/m³	24h	4
2026-10-18	131	127–135	47.7 µg/m³	24h	4
2026-10-17	131	127–141	47.6 µg/m³	24h	4
2026-10-16	125	120–130	45.2 µg/m³	24h	4
2026-10-15	116	113–119	41.6 µg/m³	23h	4
2026-10-14	114	113–117	40.7 µg/m³	20h	4

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