Air quality in Kamisu, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Kamisu, 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 Kamisu is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 12.0 µg/m³, based on eleven valid observations collected today.

Data are shown via OpenAQ. 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 dataset for Kamisu pulls in measurements from two monitoring stations and contains eleven recent rows of data. All six pollutants tracked by OpenAQ – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂) – are represented, each with a timestamp of 2026‑02‑10 22:00 UTC, which meets the “updated within three days” freshness criterion.

Across the eleven rows the recorded values show modest variability for most gases. NO ranges from 0.000 ppm to 0.005 ppm with a median of 0.0025 ppm; NO₂ varies between 0.003 ppm and 0.013 ppm, centering around 0.008 ppm; NOX spans 0.003 ppm up to 0.018 ppm, with a typical value near 0.0105 ppm. PM2.5 measurements are consistently low, falling between 7.0 µg/m³ and 12.0 µg/m³ and clustering around a median of 9.5 µg/m³. SO₂ registers as zero across all rows, indicating no detectable concentration at the sampled sites. CO is reported from only one station row, showing a single value of 0.2 ppm that also serves as its minimum, median and maximum.

The coverage is uneven: while NO, NO₂, NOX and PM2.5 have multiple observations allowing an assessment of range and central tendency, SO₂ and CO are represented by a single constant reading each, limiting insight into any fluctuation. Because the data all stem from the same update time, they reflect conditions at one moment rather than ongoing trends; actual air quality in Kamisu can differ across neighborhoods and over time.

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 Kamisu reflects 11 valid measurements and was updated within 3 days, with the latest refresh recorded at 2026‑02‑10T22:00:00+00:00. While these figures provide a current overview of citywide air quality, conditions can differ across neighborhoods and change throughout the day, so this snapshot may not represent every location or moment in Kamisu.

OpenAQ station rows