Air quality in Porsgrunn, Norway today

Mr. Duck’s Air Quality Score

Moderate air today for Porsgrunn, 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 Porsgrunn is currently classified as Moderate. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 value of 18.16 µg/m³ and a PM10 value of 20.46 µg/m³, based on five valid observations recorded by 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

Porsgrunn’s OpenAQ feed currently provides data for three pollutants – nitrogen dioxide (NO2), particulate matter up to 10 µm (PM10) and fine particulate matter up to 2.5 µm (PM2.5). The dataset contains eight recent rows spread across three monitoring sites, giving a modest spatial picture of the city’s air quality.

All measurements were last updated on 2026-02-10 18:00 UTC, which falls within the “updated within 7 days” freshness bucket, so the numbers reflect conditions from just a few days ago. For NO2 the three stations report values ranging from about 8 µg/m³ at the low end to a maximum of 51.27 µg/m³, with a median of roughly 46.44 µg/m³; the 10th percentile sits near 15.69 µg/m³ and the 90th percentile near 50.31 µg/m³, indicating most readings cluster toward the higher side of the observed spread. PM10 shows a tighter distribution: values sit between 19.67 µg/m³ and 34.54 µg/m³, median 20.46 µg/m³, with the 10th percentile at 19.83 µg/m³ and the 90th percentile at 31.72 µg/m³. PM2.5 is reported from two stations only; its range is narrower still, from 18.16 µg/m³ up to 25.9 µg/m³, median 22.03 µg/m³, and the inter‑percentile spread runs from about 18.94 µg/m³ (10th) to 25.13 µg/m³ (90th).

The coverage is uneven: NO2 and PM10 each have three reporting stations, while PM2.5 is captured at just two locations, so spatial detail varies by pollutant. Although the data are recent, the limited number of rows means conditions can differ across neighborhoods and times not represented in this snapshot.

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 dataset for Porsgrunn contains five valid measurements and is refreshed regularly, having been updated within three days (last update: 2026‑02‑10T18:00:00+00:00). These values represent a snapshot of current conditions; however, air quality can differ across neighborhoods and change throughout the day, so this information may not reflect localized or moment‑to‑moment variations.

OpenAQ station rows