Air quality in Minato, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Minato, 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 Minato is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 16.0 µg/m³, based on fourteen valid observations collected through OpenAQ.

Overall conditions reflect the moderate category with fine particulate matter at the reported level. 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 Minato includes six measured pollutants – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). In total there are 14 individual rows of observations drawn from three monitoring stations across the ward, so each pollutant is not necessarily represented at every location. The most recent readings for all six gases were recorded on 2026‑02‑10 at 22:00 UTC, meaning the information is fresh and falls within a three‑day update window.

Across the available rows the observed concentrations show modest variation. CO was measured at a single site (港区高輪２－２０) with a constant value of 0.6 ppm, while SO₂ appears only at 港区台場１－３－１ at 0.001 ppm. The nitrogen oxides display a broader spread: NO ranges from 0.005 to 0.029 ppm (median 0.017 ppm), NO₂ is tightly clustered between 0.03 and 0.038 ppm (median 0.037 ppm) and NOX varies from 0.035 to 0.067 ppm (median 0.054 ppm). PM2.5 measurements, also limited to 港区台場１－３－１, range between 14.0 and 16.0 µg/m³ with a median of 14.0 µg/m³. These figures indicate that while some pollutants (CO, SO₂) are reported from only one station, others (the nitrogen oxides and PM2.5) have multiple rows giving a sense of typical levels as well as the extremes observed within the recent reporting period.

Because the dataset relies on a small number of stations, spatial coverage is uneven: three sites provide data for six pollutants, but not every pollutant is captured at each site. The timestamps are uniformly recent, so the snapshot reflects conditions around early February 2026, yet local variations could exist outside the locations and times represented here.

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 reflects 14 valid measurements and is Updated within 3 days, with the most recent values recorded at 2026‑02‑10T22:00:00+00:00. These readings represent a snapshot of air quality across Minato and may not capture short‑term fluctuations or differences between neighborhoods. Users should consider that conditions can change rapidly depending on location, time of day, and local activities.

OpenAQ station rows