Air quality in Fukui, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Fukui, Japan

⚠️ 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 Fukui is currently classified as Moderate. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 13.0 µg/m³, based on ten valid observations collected through OpenAQ.

These data reflect the present conditions without additional interpretation. 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 data set for Fukui includes six measured pollutants – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulphur dioxide (SO₂). It is drawn from ten individual rows that originate at two monitoring stations, so each pollutant is represented by a small number of observations rather than a dense city‑wide network.

All the latest readings were recorded on 2026-02-10 at 22:00 UTC, which falls within the “updated within three days” freshness window. For CO the single value reported is 0.3 ppm, while SO₂ registers a flat 0.0 ppm across its lone entry. The nitrogen‑related gases show very low concentrations: NO ranges from 0.0 to 0.002 ppm with a median of 0.001 ppm; NO₂ varies between 0.011 and 0.019 ppm, median 0.015 ppm; NOX spans 0.013–0.019 ppm, median 0.016 ppm. PM2.5 values are clustered tightly around the mid‑teens, with a minimum of 12 µg/m³, a maximum of 13 µg/m³ and a median of 12.5 µg/m³.

Because only two stations contribute data, the coverage is limited to specific neighbourhoods – the main station at 福井市下六条町１７字立原２番 supplies most pollutants, while SO₂ comes from 福井市豊島２丁目５番２６号. The narrow range of values and the small number of rows mean that city‑wide conditions may differ in other parts of Fukui or at times outside the latest timestamp. Consequently, while the dataset gives a recent snapshot for these locations, it does not capture broader spatial variability across the entire city.

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 Fukui reflects ten valid measurements and was refreshed within three days, with the latest update recorded at 2026‑02‑10T22:00:00+00:00. While this snapshot provides a current view of citywide air quality, conditions can differ across neighborhoods and change throughout the day, so local readings may vary from the values presented here.

OpenAQ station rows