Air quality in Kanazawa, Japan today

Mr. Duck’s Air Quality Score

Good air today for Kanazawa, 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 Kanazawa is classified as Good today. The primary pollutant identified is PM2.5, with a measured concentration of 3.0 µg/m³ based on 28 valid observations reported through OpenAQ.

Overall conditions meet the criteria for a Good rating, and no other pollutants are 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

Kanazawa’s OpenAQ feed currently provides data for eight measured substances: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO2), combined nitrogen oxides (NOX), particulate matter 1 (PM1), fine particulate matter 2.5 (PM2.5), sulfur dioxide (SO2), relative humidity and temperature (the latter appears only as a field name but no recent values). The dataset comprises 33 rows in total, drawn from seven distinct monitoring stations. Freshness varies considerably across the pollutants. The most up‑to‑date readings are for PM2.5, NO, NO2, NOX, SO2 and CO, all recorded on 2026‑02‑10 at 22:00 UTC, while the lone PM1 and relative humidity entries date back to 2026‑01‑05 at 04:00 UTC and are flagged as “old data”. No rows are marked unknown or missing for these fields.

Across the recent measurements, PM2.5 values range from a minimum of 0.0 µg/m³ to a maximum of about 12.9 µg/m³, with a median of 1.0 µg/m³ and the 90th percentile near 7.0 µg/m³. Nitrogen‑related gases show similarly low concentrations: NO spans 0.0–0.001 ppm (median 0.0005 ppm), NO2 runs from 0.003 to 0.011 ppm (median 0.0065 ppm) and NOX varies between 0.003 and 0.012 ppm (median 0.007 ppm). Sulfur dioxide is uniformly reported as 0.0 ppm, and carbon monoxide appears at a single value of 0.1 ppm. The solitary PM1 reading sits at 5.16 µg/m³, and relative humidity is recorded at roughly 49 %.

Because most pollutants have only one or two recent rows, the spatial coverage is uneven: five stations contribute fresh data for gases and fine particles, but only a single station supplies older measurements for coarse particles and humidity. Consequently, while the latest timestamps suggest that some aspects of Kanazawa’s air quality are being monitored daily, other parameters rely on data that is over a month old, meaning conditions can differ across neighborhoods and times not captured by the current set.

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 dataset for Kanazawa includes 28 valid measurements and is updated within 3 days, with the most recent data recorded on 2026‑02‑10 at 22:00 UTC. While this snapshot reflects current conditions across the monitoring network, air quality can differ by specific location and time of day within the city, so values may not represent every neighborhood or moment.

OpenAQ station rows