Air quality in Keelung, Taiwan today

Mr. Duck’s Air Quality Score

Moderate air today for Keelung, 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 Keelung is currently classified as Moderate. The primary pollutant identified for today is PM2.5, which refers to fine particulate matter measured in the atmosphere.

Measurements from six valid monitoring points show a PM2.5 reference value of 16.0 and a PM10 reference value of 27.0. These figures are provided through OpenAQ data sources. 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 Keelung air‑quality dataset currently contains measurements for six pollutants – carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or smaller (PM10), particulate matter 2.5 µm or smaller (PM2.5) and sulfur dioxide (SO₂). All of these values come from a single monitoring location, identified as 基隆市 – 基隆, so the dataset represents one row per pollutant, six rows in total.

Each pollutant has a single reported value that is also its minimum, median and maximum for the most recent reporting period. CO registers at 0.58 ppm, NO₂ at 0.023 ppm, O₃ at 0.0 ppm, PM10 at 27.0 µg/m³, PM2.5 at 16.0 µg/m³ and SO₂ at 0.0011 ppm. Because the statistics are identical across the five percentiles (p10 and p90) there is no observed spread in the data; the measurements are effectively point values rather than ranges.

All six readings were last updated on 2026‑02‑10 at 23:00 UTC, which falls within the “updated within 7 days” freshness category. This means that, for Keelung, the most recent air‑quality information is less than a week old and reflects conditions at a single monitoring site. While the data are current, the limited number of stations means they cannot capture spatial variations across the city, so conditions may differ in other neighborhoods or at different times of day.

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 dataset for Keelung includes six valid measurements and was refreshed recently, with the latest update recorded on 2026‑02‑10 at 23:00 UTC; it is therefore marked as Updated within 3 days. While these figures give a reliable snapshot of overall conditions, air quality can differ across neighborhoods and change throughout the day, so local variations may not be fully captured in this summary.

OpenAQ station rows