What is the air quality trend in Asker?

Over the past 13 days, Asker had an average AQI of 21 based on station measurements. The worst day was 2026-05-19 with AQI 37.

How is Asker air quality measured?

Air quality in Asker 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 Asker, Norway

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

Historical PM2.5 and AQI trend from monitoring stations near Asker, Norway.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

19h

PM2.5 Station

19h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	17	17–17	4.1 µg/m³	1h	1
2026-05-28	11	10–12	2.6 µg/m³	2h	1
2026-05-27	10	10–10	2.4 µg/m³	1h	2
2026-05-26	20	20–20	4.8 µg/m³	1h	1
2026-05-25	7	7–7	1.7 µg/m³	1h	1
2026-05-24	17	17–17	4.1 µg/m³	1h	1
2026-05-23	33	33–33	7.9 µg/m³	1h	1
2026-05-22	30	24–35	7.1 µg/m³	4h	6
2026-05-21	31	31–31	7.4 µg/m³	1h	1
2026-05-20	23	23–23	5.5 µg/m³	1h	1
2026-05-19	37	33–41	8.9 µg/m³	2h	1
2026-05-18	29	29–29	7.0 µg/m³	1h	1
2026-05-17	14	12–16	3.4 µg/m³	2h	1

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