Air quality in Phon, Thailand today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Phon, Thailand

⚠️ 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 Phon is classified as USG today. The primary pollutant measured is PM2.5, with a reported concentration of 41.8 µg/m³ based on five valid observations from OpenAQ data.

Overall, the assessment reflects the current monitoring results without additional interpretation. 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 Phon contains measurements from twelve rows collected at two monitoring stations. All six pollutants tracked by OpenAQ are present: PM1, PM10, PM2.5, relative humidity, temperature and the particle count UM003. The most recent data points were recorded on 2026‑02‑10 22:00 UTC for five of the variables, showing that the majority of the record is very fresh. The exception is PM10, whose latest entry dates back to 2025‑01‑13 23:00 UTC, indicating that this particular metric has not been updated for over a year.

Across the twelve rows the observed values span a wide range. For the fine particles, PM1 varies from essentially zero up to 26.6 µg/m³ with a median of about 13.3 µg/m³, while PM2.5 ranges between 0.09 and 41.8 µg/m³ and centers around 20.9 µg/m³. The coarser fraction, PM10, shows values from 0.19 to 85.4 µg/m³ with a median near 42.8 µg/m³, reflecting a broader distribution than the finer fractions. Relative humidity recorded between roughly 57 % and 81 %, median 69 %; temperature stayed within a narrow band of 21.5 °C to 23.4 °C, median 22.5 °C. Particle concentration UM003 exhibited the greatest spread, from about 76 particles/cm³ up to 6 023 particles/cm³, with a typical value around 3 050 particles/cm³.

Because only two stations contribute data, spatial coverage is limited and conditions can differ across Phon. While most pollutants are reported with recent measurements, the older PM10 record highlights an uneven update frequency that users should keep in mind when interpreting city‑wide air quality snapshots.

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 reflect five valid measurements and were updated within 3 days, with the most recent reading recorded at 2026‑02‑10T22:00:00+00:00. This snapshot provides a brief view of current conditions in Phon, but air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment within the city.

OpenAQ station rows