Air quality in Fuji, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Fuji, 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 Fuji is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles).

Measurements show a PM2.5 concentration of 19.0 µg/m³, based on nine valid observations reported through OpenAQ. This reflects the latest available data 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

Fuji’s OpenAQ feed currently provides data for five pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), the combined NOx metric, fine particulate matter (PM2.5) and sulfur dioxide (SO₂). The dataset contains 13 recent rows drawn from three monitoring sites across the city. All of the reported values were last refreshed on 2026-02-10 at 22:00 UTC, which falls within the “updated within 3 days” freshness window for every pollutant.

The concentration ranges show a modest spread for the nitrogen oxides and PM2.5. NO measurements range from a low of 0.001 ppm to a high of 0.005 ppm, with a median value also at 0.001 ppm, indicating that most recent readings sit near the lower end of the observed spectrum. NO₂ values vary between 0.006 ppm and 0.019 ppm, centering around a median of 0.014 ppm, while NOx spans 0.007 ppm to 0.024 ppm with a median of 0.015 ppm. PM2.5 exhibits the widest absolute range, from 2 µg/m³ up to 19 µg/m³; the median sits at 10 µg/m³, but the 90th‑percentile reaches 17.2 µg/m³, suggesting occasional higher particulate levels at certain times or locations. In contrast, SO₂ is uniformly reported as 0.0 ppm across its single observation point, with no variation in the dataset.

Overall, the data set offers a fairly recent snapshot of air quality for Fuji, but coverage is uneven: three stations supply most of the nitrogen oxide and PM2.5 readings, while sulfur dioxide is represented by only one site. The freshness of all timestamps indicates that the information reflects conditions as of early February 2026, yet the limited number of monitoring locations means city‑wide conditions could differ in areas not directly sampled.

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 Fuji includes nine valid measurements and was refreshed recently, with the latest update recorded on 2026‑02‑10 at 22:00 UTC; it is therefore considered updated within three days. While these figures provide 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