Air quality in Ishinomaki, Japan today

Mr. Duck’s Air Quality Score

Good air today for Ishinomaki, 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 Ishinomaki is classified as Good today. The primary pollutant identified is PM2.5, with a measured concentration of 7.0 µg/m³ based on five valid observations reported through OpenAQ.

Overall conditions meet the Good category criteria, and the available data show no additional pollutants exceeding reference values. 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 Ishinomaki contains observations from five monitoring rows, each reporting the same set of pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO₂), combined nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). All five rows are recent, with the most recent update recorded on 2026-02-10 22:00 UTC, which falls within the “updated within three days” freshness window for every pollutant.

Across the five entries the measured values show virtually no variation. NO is consistently reported at 0.001 ppm, NO₂ at 0.007 ppm, and NOX at 0.008 ppm; each of these gases has a minimum, median and maximum that are identical to the single observed value. PM2.5 is recorded uniformly at 7.0 µg/m³, again with no spread between its statistical percentiles. SO₂ registers as 0.0 ppm in every row, indicating either non‑detectable levels or a sensor reading at its lower limit.

Because the data come from a single location (石巻市石巻市門脇一番谷地51-10) and all rows share the same timestamp, the coverage is limited to one monitoring point rather than city‑wide spatial diversity. The lack of variability in both concentrations and timestamps means the dataset captures only a snapshot of conditions at that specific site on 2026‑02‑10, and it cannot reflect temporal changes or differences across other neighborhoods in Ishinomaki.

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 Ishinomaki is based on five valid measurements and was updated within 3 days, with the latest refresh recorded at 2026‑02‑10T22:00:00+00:00. While this snapshot reflects recent conditions across the monitoring network, air quality can differ by specific location and time of day within the city, so values may vary locally.

OpenAQ station rows