Air quality in Hitachiomiya, Japan today
Mr. Duck’s Air Quality Score
Moderate air today for Hitachiomiya, 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 Hitachiomiya is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles), with a measured concentration of 12.0 µg/m³ based on five valid observations collected via OpenAQ.
These data reflect the present conditions without implying any trend or cause. 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 Hitachiomiya dataset contains five measured pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), total oxides of nitrogen (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). All values come from a single monitoring location at 常陸大宮市野中町３０８３, so the city’s air‑quality picture is based on one station row.
The most recent readings were recorded on 2026-02-10 22:00 UTC for every pollutant, meaning the data are fresh within the last three days. NO, NOX and SO₂ each show a uniform value of 0.0 ppm across the minimum, median and maximum, indicating no detectable concentration at the time of measurement. NO₂ registers a constant 0.006 ppm, while PM2.5 is consistently measured at 12.0 µg/m³; both pollutants have identical 10th‑percentile and 90th‑percentile values, so there is no observed spread in the limited sample.
Because only one monitoring site contributes data, the coverage is narrow and does not capture spatial variations that may exist elsewhere in Hitachiomiya. The dataset’s freshness is good – all pollutants were last updated on the same recent timestamp – but the lack of multiple rows means any temporal changes or local hotspots cannot be assessed from this source alone.
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 are based on five valid measurements and were updated within 3 days, with the latest reading recorded at 2026‑02‑10T22:00:00+00:00. These values represent a snapshot of conditions across Hitachiomiya; air quality can differ by specific location and time of day within the city, so individual experiences may vary from the reported figures.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 常陸大宮市野中町３０８３ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 常陸大宮市野中町３０８３ | no2 | 0.006 | ppm | 2026-02-10 22:00 UTC |
| 常陸大宮市野中町３０８３ | nox | 0.006 | ppm | 2026-02-10 22:00 UTC |
| 常陸大宮市野中町３０８３ | pm25 | 12.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 常陸大宮市野中町３０８３ | so2 | 0.0 | ppm | 2026-02-10 22:00 UTC |