Air quality in Taichung, Taiwan today

Mr. Duck’s Air Quality Score

Moderate air today for Taichung, 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 Taichung is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 24.0 µg/m³ and a PM10 level of 41.0 µg/m³, based on thirty valid observations.

Data are shown via OpenAQ and reflect the latest available readings 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

Taichung’s air‑quality feed includes six measured pollutants – carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM₁₀), fine particulate matter 2.5 µm or less (PM₂.₅) and sulfur dioxide (SO₂). The dataset draws from nine monitoring stations that each report a full set of these six variables, giving city‑wide coverage across the network.

All nine stations have their most recent readings timestamped at 2026-02-10 23:00 UTC, which falls within the “updated within 7 days” freshness category. This means the latest data for every pollutant are no older than a week, providing a reasonably current snapshot of conditions across Taichung.

The observed values show modest variation. CO concentrations range from 0.08 to 0.63 ppm with a median of 0.29 ppm; NO₂ spans 0.0035‑0.029 ppm (median 0.013 ppm); O₃ varies between 0.001 and 0.0562 ppm (median 0.021 ppm). Particulate matter shows broader spreads: PM₁₀ values lie from 5 to 41 µg/m³, with a median of 29 µg/m³, while PM₂.₅ ranges from 0 to 25 µg/m³ and has a median of 20 µg/m³. SO₂ is the lowest‑level pollutant in this set, recorded between 0 and 0.0031 ppm with a median of 0.0015 ppm.

Because each station reports all six pollutants, there are no gaps in chemical coverage, but the numeric ranges differ markedly: gases such as CO, NO₂ and O₃ stay within narrow bands, whereas particulate matter exhibits a wider spread, especially for PM₁₀. The uniform freshness across the network suggests that, at the time of reporting, Taichung’s air‑quality picture is contemporaneous citywide, though actual conditions can still vary by location and moment beyond what these nine stations capture.

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 dataset for Taichung includes 30 valid measurements and is updated within 3 days, with the most recent data recorded at 2026‑02‑10T23:00:00+00:00. While this snapshot reflects current conditions across the monitoring network, air quality can differ by specific locations and times within the city, so values may not represent every neighborhood or moment.

OpenAQ station rows