What is the air quality trend in Janakkala?

Over the past 3 days, Janakkala had an average AQI of 12 based on station measurements. The worst day was 2026-09-04 with AQI 16.

How is Janakkala air quality measured?

Air quality in Janakkala 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 Janakkala, Finland

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

Historical PM2.5 and AQI trend from monitoring stations near Janakkala, Finland.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

29h

PM2.5 Station

29h · 1 station

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	10	6–15	2.4 µg/m³	10h	1
2026-09-04	16	7–22	3.9 µg/m³	13h	1
2026-09-03	11	8–13	2.6 µg/m³	6h	1

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