Air quality in Espoo, Uusimaa, Finland today

Mr. Duck’s Air Quality Score

Good air today for Espoo, Uusimaa, Finland

⚠️ 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 Espoo today falls into the Good category. The primary pollutant measured is PM2.5 (fine particles). According to the latest data shown via OpenAQ, the PM2.5 reference value is 5.55027 and the PM10 reference value is 9.59074, based on eight valid measurements.

These figures indicate that particulate levels are within the range associated with a Good rating for the city. 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 dataset for Espoo contains measurements of five pollutants – nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM10), fine particulate matter 2.5 µm or less (PM2.5) and sulphur dioxide (SO₂). These values come from 13 individual rows that represent three monitoring stations spread across the city, so each pollutant is not necessarily recorded at every location.

All of the latest readings were uploaded on 2026‑02‑10 at 18:00 UTC, which means the newest data are between one and three days old. In total eight rows have been refreshed within the last three days, while five rows are older; none of the entries are from today. The freshness therefore varies across the dataset but remains relatively recent overall.

Looking at the numbers, NO₂ shows a wide spread, ranging from about 4.7 µg/m³ up to a peak of 48.38 µg/m³, with a median near 11.40 µg/m³. PM10 values are tightly clustered between roughly 7.44 and 9.59 µg/m³, the median being 8.98 µg/m³. PM2.5 is even more uniform, staying between 5.46 and 5.86 µg/m³ with a median of 5.55 µg/m³. Ozone measurements are narrowly bounded from about 48.0 to 51.6 µg/m³, median 49.80 µg/m³, while SO₂ stays low, ranging from 0.34 to 0.38 µg/m³ with a median of 0.36 µg/m³.

Because the data come from only three sites, conditions can differ between neighborhoods and over time, especially for pollutants like NO₂ that show the greatest variability across the recorded rows.

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 for Espoo’s air quality are based on eight valid measurements and were refreshed recently, with the latest update recorded at 2026‑02‑10T18:00:00+00:00 (updated within 3 days). This snapshot reflects conditions captured across the monitoring network at that time. Keep in mind that air quality can differ by specific location and moment within the city, so values may vary locally and over short periods.

OpenAQ station rows