What is the air quality trend in Tønsberg?

Over the past 8 days, Tønsberg had an average AQI of 39 based on station measurements. The worst day was 2026-07-21 with AQI 60.

How is Tønsberg air quality measured?

Air quality in Tønsberg 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 Tønsberg, Norway

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

21h

PM2.5 Station

21h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	52	52–52	12.6 µg/m³	2h	2
2026-07-21	60	48–72	16.8 µg/m³	2h	2
2026-07-20	9	6–14	2.2 µg/m³	3h	2
2026-07-19	10	8–12	2.4 µg/m³	2h	1
2026-07-18	29	9–54	7.1 µg/m³	4h	2
2026-07-17	47	41–52	11.3 µg/m³	3h	2
2026-07-16	55	55–55	14.0 µg/m³	1h	1
2026-07-15	52	30–63	13.8 µg/m³	4h	1

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