Air quality in Harjavalta, Satakunta, Finland today

Mr. Duck’s Air Quality Score

Good air today for Harjavalta, Satakunta, 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 Harjavalta today is classified as Good. The primary pollutant measured is PM10, with a reported reference concentration of 8.42 µg/m³ based on eight valid observations.

Data are shown via OpenAQ and reflect the current monitoring results 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

Harjavalta’s OpenAQ feed currently includes data for two measured pollutants – PM10 and SO₂ – collected from four monitoring stations that together provide twelve recent observations. The most recent readings for both substances were recorded on 2026-02-10 at 18:00 UTC, meaning the dataset is refreshed within a few days of real‑time conditions.

For PM10, values in the latest batch range from about 8.1 µg/m³ up to 10.3 µg/m³, with a median of roughly 8.7 µg/m³. The tenth percentile sits at the minimum value (8.1 µg/m³) and the ninetieth percentile is just under 9.7 µg/m³, indicating that most recent measurements cluster tightly around the low‑single‑digit range. SO₂ shows a broader spread: the smallest reported concentration is about 0.87 µg/m³ while the maximum reaches 2.62 µg/m³; the median sits near 1.41 µg/m³, and the tenth and ninetieth percentiles are 1.11 µg/m³ and 2.09 µg/m³ respectively. This suggests that recent SO₂ levels vary more widely than PM10 across the city’s monitoring sites.

Overall, the dataset is relatively fresh, with all twelve rows updated within three days of collection, but coverage is limited to four stations. Consequently, while the available numbers give a clear picture of current concentrations at those points, conditions elsewhere in Harjavalta may differ, especially given the modest number of observation locations and the occasional older or unknown entries noted in the broader data set.

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 Harjavalta are based on eight valid measurements and were refreshed recently, with the latest update recorded at 2026‑02‑10 18:00 UTC; the dataset is therefore “Updated within 3 days.” This snapshot reflects conditions measured at specific monitoring points and times, and air quality can differ across neighborhoods and moments throughout the city.

OpenAQ station rows