Air quality in Wiang, Thailand today

Mr. Duck’s Air Quality Score

Moderate air today for Wiang, 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 Wiang today falls into the Moderate category. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 22.4 µg/m³ and a PM10 level of 40.0 µg/m³, based on two valid observations.

Data are shown via OpenAQ. 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 Wiang air‑quality record draws from six sensor rows that together report on six different pollutants: PM1, PM10, PM2.5, relative humidity, temperature and UM003 (particles per cubic centimetre). Only four of the rows contain recent data – the PM10 and PM2.5 measurements were last updated on 2026‑02‑10 at 22:00 UTC, while the remaining four variables (PM1, relative humidity, temperature and UM003) are from a single older station whose latest reading dates back to 2025‑11‑12 at 03:00 UTC. This means that half of the available observations are more than three months old, so the snapshot reflects conditions captured at two distinct moments rather than a continuous stream.

For the newer PM10 and PM2.5 data the observed values span from a low of 3.47 µg/m³ to a high of 40 µg/m³ for PM10, with a median around 21 µg/m³; PM2.5 ranges between 12 µg/m³ and 22.4 µg/m³, median roughly 14.8 µg/m³. The older PM1 record shows a narrow band from about 8.9 to 10.35 µg/m³ (median ≈9.6), while relative humidity varies between 54 % and 78 % (median ≈66 %). Temperature in the same old set moves from 14.5 °C up to 23.5 °C (median ≈19 °C). UM003 particle counts are clustered tightly around 1,700–1,750 particles/cm³ (median ≈1,725).

Overall the dataset provides a modest picture of Wiang’s air quality: recent particulate matter readings are available from one well‑maintained station, but all other parameters rely on older data from a single location. Consequently, conditions can differ across neighborhoods and times of day, and the current figures may not capture short‑term fluctuations throughout the city.

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 Wiang reflects two valid measurements and is marked as Updated within 3 days, with the latest reading recorded on 2026‑02‑10 at 22:00 UTC. This snapshot provides a brief view of current conditions; however, air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows