Air quality in Fredrikstad, Norway today

Mr. Duck’s Air Quality Score

Moderate air today for Fredrikstad, Norway

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality in Fredrikstad is classified as Moderate today. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 18.07 µg/m³ and a PM10 level of 20.28 µg/m³, based on five valid observations.

Data is shown via OpenAQ. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.

Latest sensor values

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

What the data includes

The air‑quality dataset for Fredrikstad contains measurements of three pollutants – nitrogen dioxide (NO₂), particulate matter 10 µm or smaller (PM₁₀) and particulate matter 2.5 µm or smaller (PM₂.₅). The data come from six individual rows that are grouped into two monitoring stations, so each station contributes multiple observations. All of the values shown were recorded at the same recent moment: 2026‑02‑10 18:00 UTC, which means the latest information is less than a week old for every pollutant.

For NO₂ the observed concentrations range from just under 10 µg/m³ to about 27.5 µg/m³, with a median of roughly 18.7 µg/m³ and the 10th‑percentile at 11.7 µg/m³ while the 90th‑percentile sits near 25.8 µg/m³. PM₁₀ values are tighter, spanning from about 14.8 to 20.3 µg/m³; the median is 17.5 µg/m³ and the inter‑percentile range runs from 15.4 to 19.7 µg/m³. PM₂.₅ shows a similar spread, with lows around 9.8 µg/m³, highs near 18.1 µg/m³, a median of 13.9 µg/m³ and the 10th‑ and 90th‑percentiles at 10.6 and 17.2 µg/m³ respectively.

Because the dataset includes only two stations, spatial coverage across Fredrikstad is limited; conditions can differ in neighborhoods that are not directly represented by these monitoring points. Nevertheless, the data are uniformly recent, and each pollutant has a full set of statistical summaries (minimum, median, maximum and percentile values), allowing a clear picture of the typical range observed at the reporting sites during the latest measurement window.

Learn more about sources and filtering: About the data.

Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)

Latest sensor values (bars)

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

Data notes

The data shown for Fredrikstad is based on five valid measurements and was updated within 3 days, with the latest reading recorded at 2026‑02‑10T18:00:00+00:00. This snapshot reflects conditions at a specific time and place; air quality can differ across neighborhoods and throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows