Air quality in Fujisawa, Japan today

Mr. Duck’s Air Quality Score

Good air today for Fujisawa, 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 Fujisawa is currently classified as Good. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 7.0 µg/m³, based on 25 valid observations collected through OpenAQ.

Overall conditions meet the criteria for a Good rating, and no other pollutants have been highlighted in this 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

Fujisawa’s open‑air quality feed 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). The dataset comprises 25 individual rows drawn from five monitoring stations across the city, giving a modest spatial snapshot of conditions at a single point in time.

All pollutants have recent data: the most recent timestamp for every parameter is 2026‑02‑10 22:00 UTC, which falls within the “updated within three days” freshness window. However, coverage is uneven. CO and SO₂ are reported from only two and three rows respectively, each showing a single value (CO 0.2 ppm at 藤沢市朝日町１－１; SO₂ 0.001 ppm at 藤沢市打戻１９０２). In contrast, NO, NO₂, NOX and PM2.5 each have five rows, providing a broader view of their variability.

The measured ranges illustrate the modest spread in this city’s air quality. For nitrogen oxides, values range from 0.001 ppm (NO) up to 0.077 ppm (NOX), with median concentrations around 0.001–0.01 ppm; NO₂ sits between 0.002 and 0.037 ppm, median 0.009 ppm. PM2.5 values are low, spanning 3 to 7 µg/m³ and centering on a median of 4 µg/m³. Sulfur dioxide is consistently at the detection limit (0.001 ppm), while carbon monoxide remains steady at 0.2 ppm across its limited observations.

Overall, Fujisawa’s dataset offers fresh readings but reflects limited station density, especially for CO and SO₂. Because the data represent only a handful of locations and a single recent snapshot, actual conditions can differ across neighborhoods and times of day.

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 current dataset for Fujisawa includes 25 valid measurements and was refreshed recently—Updated within 3 days, with the latest update recorded at 2026‑02‑10T22:00:00+00:00. While these figures provide a reliable snapshot of overall conditions, air quality can vary across different neighborhoods and times of day within the city, so localized readings may differ from the presented averages.

OpenAQ station rows