Air quality in Hiratsuka, Japan today
Mr. Duck’s Air Quality Score
Good air today for Hiratsuka, Japan
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Hiratsuka is currently classified as Good. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 2.0 µg/m³, based on five valid observations collected via OpenAQ.
Overall conditions meet the criteria for the Good category, with no additional pollutants reported. 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 Hiratsuka air‑quality record draws from a single monitoring site, identified as 平塚市河内３０７, so the dataset contains one row of observations for each pollutant. All five pollutants tracked by OpenAQ are present: nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). The most recent reading for every compound was logged on 2026‑02‑10 at 22:00 UTC, meaning the data are fresh within three days of the current date.
Across the five substances the measured values show very little variation because each metric has only one reported figure. NO, NOX and SO₂ all read a flat 0.0 ppm, while NO₂ registers 0.003 ppm and PM2.5 records 2.0 µg/m³. For each pollutant the minimum, median, maximum, as well as the 10th and 90th percentiles are identical to the single value reported, indicating no observed spread in this snapshot. Because there is only one station, the dataset cannot reveal spatial differences within Hiratsuka; conditions may differ elsewhere in the city or at other times.
The uniform freshness of the timestamps suggests that the site is being updated regularly, yet the limited coverage means the picture is narrow. Users should keep in mind that a single point measurement does not capture temporal fluctuations beyond the last update nor variations across neighborhoods. Consequently, while the current numbers provide an immediate snapshot for the listed pollutants at this location, they do not represent the full range of air‑quality conditions that might be experienced throughout Hiratsuka.
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 five valid measurements and was updated within three days, with the latest refresh recorded at 2026‑02‑10 22:00 UTC. This snapshot provides a current view of Hiratsuka’s air quality but conditions can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 平塚市河内３０７ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 平塚市河内３０７ | no2 | 0.003 | ppm | 2026-02-10 22:00 UTC |
| 平塚市河内３０７ | nox | 0.003 | ppm | 2026-02-10 22:00 UTC |
| 平塚市河内３０７ | pm25 | 2.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 平塚市河内３０７ | so2 | 0.0 | ppm | 2026-02-10 22:00 UTC |