Air quality in Hengchun, Taiwan today

Mr. Duck’s Air Quality Score

Good air today for Hengchun, Taiwan

⚠️ 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 Hengchun today is classified as Good. The primary pollutant identified is PM2.5, with a measured concentration of 5.0 µg/m³. Additional monitoring shows PM10 at 6.0 µg/m³, based on six valid observations collected through OpenAQ.

Overall conditions indicate that particulate levels are within the reference values provided for this category. 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 Hengchun data set contains a single monitoring location that reports six common air‑quality constituents: carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM₁₀), particulate matter ≤ 2.5 µm (PM₂.₅) and sulfur dioxide (SO₂). All six pollutants are present, but the record comes from just one row, so spatial coverage within the city is limited to that single site in Pingtung County – Hengchun.

The most recent measurements for every pollutant were recorded on 2026‑02‑10 at 23:00 UTC, meaning the data are all fresh within the last seven days. For CO the value is 0.13 ppm; NO₂ registers a flat 0.0 ppm; O₃ shows 0.039 ppm; PM₁₀ is consistently 6.0 µg/m³; PM₂.₅ is 5.0 µg/m³; and SO₂ records 0.0004 ppm. Each pollutant’s minimum, median and maximum are identical, indicating no observed variation in the limited sample – the dataset provides a single point rather than a range of conditions.

Because only one monitoring row contributes data, there is no spread to describe temporal or spatial variability for any of the six substances. The uniform timestamps and values mean that while the information is up‑to‑date, it reflects conditions at a specific moment and location only. Consequently, readers should keep in mind that air quality can differ across other parts of Hengchun and at times outside the recorded 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 data shown reflects six valid measurements and was refreshed recently, with the latest update recorded on 2026‑02‑10 at 23:00 UTC; it is considered “Updated within 3 days.” This snapshot provides a current view of Hengchun’s air quality, but conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in these figures.

OpenAQ station rows