What is the air quality trend in Katihar?

Over the past 14 days, Katihar had an average AQI of 106 based on station measurements. The worst day was with AQI .

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.

Current AQI
Moderate

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

247h · 3 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-04-11	94	94–94	32.7 µg/m³	2h	2
2026-04-10	84	80–93	27.8 µg/m³	24h	3
2026-04-09	82	79–85	26.9 µg/m³	17h	3
2026-04-08	90	88–93	30.8 µg/m³	8h	3
2026-04-07	107	95–113	38.1 µg/m³	24h	3
2026-04-06	96	89–107	33.2 µg/m³	17h	3
2026-04-04	153	150–154	59.5 µg/m³	14h	3
2026-04-03	135	118–152	49.4 µg/m³	24h	3
2026-04-02	127	117–140	46.0 µg/m³	20h	3
2026-04-01	140	124–145	51.2 µg/m³	22h	3
2026-03-31	103	92–121	36.3 µg/m³	22h	3
2026-03-30	94	92–96	32.5 µg/m³	9h	3
2026-03-29	88	84–92	29.7 µg/m³	23h	3
2026-03-28	93	82–118	31.6 µg/m³	21h	3

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