Air quality in Hernádszurdok, Hungary today
Mr. Duck’s Air Quality Score
Moderate air today for Hernádszurdok, Hungary
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Hernádszurdok is currently classified as Moderate. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 10.0 and a PM10 reference value of 13.0, based on three 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
Hernádszurdok’s OpenAQ feed contains data for six 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). The dataset is built from nine measurement rows collected at two monitoring stations in the city.
The most recent observations are for O₃, PM10 and PM2.5, all recorded on 2026‑02‑10 20:00 UTC, which means those three pollutants have fresh data that was updated within the last three days. For O₃ the values span from a low of 40.7 µg/m³ to a high of 87.0 µg/m³ with a median around 63.9 µg/m³; PM10 ranges between 13.0 and 32.3 µg/m³, median 22.6 µg/m³; PM2.5 varies from 4.5 to 10.0 µg/m³, median 7.3 µg/m³. These three pollutants therefore provide a reasonably detailed picture of current air quality in Hernádszurdok.
In contrast, CO, NO₂ and SO₂ each have only a single historic value that dates back to 2024‑09‑20 21:00 UTC. CO is reported at 535.0 µg/m³, NO₂ at 5.0 µg/m³ and SO₂ at 3.4 µg/m³, with no recent updates available for any of them. Consequently, the dataset shows uneven coverage: while fine particles and ozone are monitored regularly, the other three gases rely on outdated measurements. Overall, half of the pollutant rows are recent, but three‑quarters of the data points are either old or lack a timestamp, indicating that city‑wide conditions can differ across locations and times, especially for CO, NO₂ and SO₂ where current information is missing.
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 current data for Hernádszurdok is based on three valid measurements and was refreshed recently, with the latest update recorded at 2026‑02‑10T20:00:00+00:00, meaning it has been updated within three days. This snapshot reflects conditions at the time of sampling; however, air quality can vary across different neighborhoods and times of day within the city, so values may differ from what you experience locally.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| "Hernadszurdok" | o3 | 87.04213 | µg/m³ | |
| "Hernadszurdok" | pm10 | 32.29603 | µg/m³ | |
| "Hernadszurdok" | pm25 | 4.5183128 | µg/m³ | |
| Hernádszurdok | no2 | 5.0 | µg/m³ | 2024-09-20 21:00 UTC |
| Hernádszurdok | o3 | 40.7 | µg/m³ | 2026-02-10 20:00 UTC |
| Hernádszurdok | pm10 | 13.0 | µg/m³ | 2026-02-10 20:00 UTC |
| Hernádszurdok | pm25 | 10.0 | µg/m³ | 2026-02-10 20:00 UTC |
| Hernádszurdok | so2 | 3.4 | µg/m³ | 2024-09-20 21:00 UTC |