Air quality in Phonhong District, Vientiane Province, Laos today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Phonhong District, Vientiane Province, Laos

⚠️ 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 Phonhong District is classified as USG. The primary pollutant identified is PM2.5, with a measured concentration of 39.80 µg/m³ based on five valid observations from OpenAQ data.

These figures reflect the current monitoring snapshot for the district. 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 dataset for Phonhong District in Vientiane Province contains measurements from two monitoring stations, each providing a single row of data. All five pollutants tracked by OpenAQ are represented: PM1, PM2.5, relative humidity, temperature and the particle count UM003. The most recent readings were all recorded on 2026-02-10 at 20:00 UTC, so the freshest timestamp across the whole set is just a few days old.

Across the two stations the observed values span a modest range for each pollutant. PM1 varied from about 8.78 to 27.79 µg/m³ with a median of 18.28 µg/m³; PM2.5 ranged between 20.06 and 39.80 µg/m³, median 29.93 µg/m³. Relative humidity was recorded between 45.15 % and 52.71 %, median roughly 48.93 %; temperature fell from 24.83 °C to 27.47 °C, median near 26.15 °C. The particle concentration UM003 showed the widest spread, from 763.65 up to 1 858.99 particles/cm³, with a median of about 1 311.32 particles/cm³.

Because only two stations contribute data, coverage is limited and may not capture spatial variations within the district. Nevertheless, each pollutant has at least one recent observation, and the timestamps are uniformly fresh (all within the last week). The distribution of values indicates that most measurements cluster around their medians, with the 10th‑percentile values close to the minima and the 90th‑percentile values approaching the maxima for each parameter. This suggests relatively consistent conditions during the reporting period, though the small number of rows means occasional outliers could be missed.

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 for Phonhong District is based on five valid measurements and was refreshed recently, with the latest update recorded at 2026‑02‑10T20:00:00+00:00 (Updated within 3 days). This snapshot reflects conditions at the time of sampling; air quality can vary by location and time within the city, so values may differ from those experienced elsewhere or later in the day.

OpenAQ station rows