Air quality in Kitakyushu, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Kitakyushu, 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 Kitakyushu is currently classified as Moderate. The primary pollutant identified is PM2.5, fine particulate matter, with a measured concentration of 12.0 µg/m³ based on the latest data set. A total of 56 valid measurements were used to determine this assessment.

Data are shown via OpenAQ and reflect the conditions at the time of collection. 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 Kitakyushu dataset pulls in real‑time readings from twelve monitoring sites that together contribute fifty‑six individual rows of data. Six different gases and particles are represented: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). Because each pollutant is logged at a different subset of the stations, coverage is uneven – CO appears in only two rows, SO₂ in six, while NO, NO₂ and NOX are each captured in twelve rows and PM2.5 also has twelve entries.

All of the most recent measurements were recorded on 2026‑02‑10 at 22:00 UTC, so the freshest data for every pollutant is less than three days old. The median values give a quick sense of typical conditions: CO sits around 0.35 ppm, NO at essentially zero (median 0.0 ppm), NO₂ near 0.006 ppm, NOX about 0.006 ppm, PM2.5 at 6 µg/m³ and SO₂ at 0 ppm. The observed ranges are modest but show some spread – CO varies from 0.3 to 0.4 ppm, NO peaks at 0.011 ppm, NO₂ reaches 0.013 ppm, NOX climbs to 0.023 ppm, PM2.5 spans 4 to 12 µg/m³ and SO₂ tops out at 0.001 ppm.

Because the number of rows differs markedly across pollutants, the picture of air quality can change depending on where and which sensor you look at. Locations with CO or SO₂ sensors are limited to a few sites, while nitrogen‑oxide readings are more widely distributed. The data set is current but reflects only a snapshot from a single day; conditions elsewhere in the city or at other times may differ.

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 56 valid measurements and is updated within 3 days, with the most recent values recorded on 2026‑02‑10 at 22:00 UTC. While these figures provide a current overview of Kitakyushu’s air quality, conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in this snapshot.

OpenAQ station rows