Air quality in Ajka, Hungary today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Ajka, Hungary

⚠️ 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 Ajka is classified as USG today. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 41.0 µg/m³ and a PM10 level of 44.0 µg/m³, based on five valid observations.

Data are 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 Ajka air‑quality record consists of six measured pollutants – carbon monoxide (CO), nitrogen dioxide (NO2), ozone (O3), particulate matter 10 µm (PM10), particulate matter 2.5 µm (PM2.5) and sulphur dioxide (SO2). All data come from two monitoring stations, giving a total of eleven rows in the dataset. The most recent observations are fairly fresh: CO was last reported on 2026‑02‑10 at 10:00 UTC, while NO2, O3, PM10, SO2 and PM2.5 were all updated on 2026‑02‑10 at 20:00 UTC, meaning the newest timestamps are within three days of today.

Across the pollutants the recorded values show a wide spread for some compounds and very little variation for others. CO ranges from about 425 µg/m³ to 428 µg/m³, with a median near 426 µg/m³, indicating consistently high concentrations in the limited sample set. NO2 varies between 10.3 and 11.6 µg/m³, centering around 11 µg/m³, while O3 spans 32.1 to 52.2 µg/m³, with a median of roughly 42 µg/m³, suggesting more fluctuation in ozone levels. PM10 shows the broadest range, from just under 3 µg/m³ up to 44 µg/m³, and a median of about 23 µg/m³, highlighting considerable day‑to‑day changes. In contrast, PM2.5 is reported as a single value of 41 µg/m³ for the whole period, offering no insight into variability. SO2 remains low and tightly clustered between 3.1 and 4.2 µg/m³, with a median near 3.6 µg/m³.

Overall, the dataset provides recent snapshots for all six pollutants but is limited to two stations, so spatial coverage across Ajka is modest. The uniform freshness of timestamps indicates up‑to‑date reporting, yet the sparse number of rows means that conditions can differ in parts of the city not directly captured by these sensors.

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 Ajka reflects five valid measurements and is updated within 3 days, with the latest values recorded on 2026‑02‑10 at 20:00 UTC. These figures provide a recent snapshot of ambient conditions, but air quality can differ across neighborhoods and change throughout the day, so local variations may not be captured in this summary.

OpenAQ station rows