Air quality in Kyoto, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Kyoto, 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 Kyoto today is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 12.0 µg/m³, based on 51 valid observations collected through OpenAQ.

Overall conditions reflect the moderate category with PM2.5 as the dominant factor. 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

Kyoto’s open‑air quality feed includes six measured pollutants – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), combined nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). The dataset draws from 11 monitoring rows in total, but coverage varies by pollutant: CO is reported from three stations, SO₂ from four, while NO, NO₂, NOX and PM2.5 each have eleven observations.

All the latest readings were recorded on 2026‑02‑10 at 22:00 UTC, so the data are fresh within the last three days for every pollutant. Median values show low concentrations across the board: CO sits at 0.3 ppm, NO at 0.001 ppm, NO₂ at 0.011 ppm, NOX at 0.013 ppm and PM2.5 averages 10 µg/m³. SO₂ registers a median of zero, reflecting no detectable levels in the four stations that report it.

The spread differs noticeably. CO ranges from 0.2 to 0.4 ppm, while NO varies between 0.0 and 0.028 ppm; NO₂ spans 0.006‑0.024 ppm and NOX reaches up to 0.052 ppm. PM2.5 values are tightly clustered between 8 and 12 µg/m³. In contrast, SO₂ shows a uniform reading of 0.0 ppm across all its stations.

Because the number of stations is uneven – especially the limited CO and SO₂ sites – the snapshot may not capture micro‑scale variations throughout Kyoto. Nonetheless, the recent timestamps and the range of pollutants provide a current picture of air quality conditions at the locations monitored.

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 reflect 51 valid measurements and are Updated within 3 days, with the latest values recorded on 2026‑02‑10T22:00:00+00:00. This snapshot represents conditions at specific monitoring sites across Kyoto at that time; air quality can differ by location and moment within the city, so individual experiences may vary from the figures presented here.

OpenAQ station rows