What is the air quality trend in Katihar?

Over the past 3 days, Katihar had an average AQI of 134 based on station measurements. The worst day was 2026-10-21 with AQI 137.

How is Katihar air quality measured?

Air quality in Katihar 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 Katihar, India

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

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

128

Current AQI
Unhealthy for sensitive groups CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

46h

PM2.5 Station

46h · 3 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	137	134–140	50.0 µg/m³	12h	3
2026-10-20	135	127–149	49.3 µg/m³	24h	3
2026-10-19	130	127–131	47.1 µg/m³	10h	3

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