What is the air quality trend in Kālna?

Over the past 8 days, Kālna had an average AQI of 97 based on station measurements. The worst day was 2026-10-14 with AQI 143.

How is Kālna air quality measured?

Air quality in Kālna 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 Kālna, India

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

30h

PM2.5 Station

30h · 7 stations

Temperature GFS model

27pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	90	90–90	30.8 µg/m³	2h	6
2026-10-20	90	87–101	30.8 µg/m³	9h	5
2026-10-19	114	107–122	40.9 µg/m³	2h	1
2026-10-18	88	85–90	29.7 µg/m³	7h	8
2026-10-17	90	85–108	30.3 µg/m³	5h	6
2026-10-16	70	70–70	21.4 µg/m³	1h	3
2026-10-15	97	88–110	33.8 µg/m³	3h	2
2026-10-14	143	143–143	52.7 µg/m³	1h	1

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