What is the air quality trend in Howrah?

Over the past 8 days, Howrah had an average AQI of 110 based on station measurements. The worst day was 2026-09-02 with AQI 157.

How is Howrah air quality measured?

Air quality in Howrah 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 Howrah, India

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

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

110

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

163h

PM2.5 Station

163h · 94 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	100	95–112	35.1 µg/m³	16h	95
2026-09-04	102	95–112	35.8 µg/m³	24h	96
2026-09-03	140	113–154	52.0 µg/m³	24h	95
2026-09-02	157	137–198	74.3 µg/m³	22h	63
2026-09-01	125	76–178	52.9 µg/m³	23h	34
2026-08-31	84	75–91	27.6 µg/m³	24h	87
2026-08-30	80	76–90	26.1 µg/m³	24h	90
2026-08-29	96	93–98	33.2 µg/m³	6h	96

Back to Howrah Air Quality