Air quality in Kawachinagano, Japan today

Mr. Duck’s Air Quality Score

Good air today for Kawachinagano, 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 Kawachinagano is classified as Good today. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 8.0 µg/m³ based on eight valid observations reported through OpenAQ.

Overall conditions meet the criteria for the Good category, with no additional pollutants highlighted in the current assessment. 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

Kawachinagano’s open‑air quality feed currently includes four measured pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX) and fine particulate matter (PM2.5). The data set consists of eight individual rows drawn from two monitoring sites, all located at the same address in Mikatsukicho (河内長野市三日市町２８８－１). Each pollutant’s most recent reading was recorded on 2026‑02‑10 at 22:00 UTC, and the source notes that these values were updated within the past three days, indicating a relatively fresh snapshot of conditions for this city.

The NO measurements are very low, ranging from zero to 0.006 ppm, with a median of just 0.003 ppm and the 10th‑percentile at 0.0006 ppm. NO₂ values sit between 0.008 and 0.016 ppm, a tighter band where the median (0.012 ppm) is close to the lower end of the observed spread; the 90th‑percentile reaches 0.0152 ppm. For total nitrogen oxides, the data span 0.008 to 0.022 ppm, with a median of 0.015 ppm and a broader interquartile range reflected in the 10th‑percentile (0.0094 ppm) and 90th‑percentile (0.0206 ppm). PM2.5 concentrations are reported in micrograms per cubic metre, ranging from 2 to 8 µg/m³; the median sits at 5 µg/m³, while the lower decile is 2.6 µg/m³ and the upper decile reaches 7.4 µg/m³.

Because all eight rows come from just two sensors at a single location, the dataset provides a detailed picture of air quality at that point but does not capture spatial variation across Kawachinagano. Nevertheless, the recent timestamps and consistent update cadence mean the figures reflect current conditions rather than historical archives. Users should keep in mind that pollutant levels can differ elsewhere in the city or change throughout the day, so these numbers represent a snapshot from one specific site at a single moment.

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 Kawachinagano is based on eight valid measurements and was updated within three days, with the latest refresh recorded at 2026‑02‑10 22:00 UTC. This snapshot reflects conditions measured at specific monitoring points and times; air quality can differ across neighborhoods and throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows