Air quality in Si Maha Phot District, Thailand today
Mr. Duck’s Air Quality Score
Unhealthy for sensitive groups for Si Maha Phot District, Thailand
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality today in Si Maha Phot District is classified as USG. The primary pollutant identified is PM2.5, with a measured concentration of 46.3 µg/m³. A secondary measurement shows PM10 at 71.0 µg/m³, based on two valid observations.
These values are presented through OpenAQ data. 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 air‑quality record for Si Maha Phot District is drawn from a single monitoring site, Bu Yai Bai Hall Station, which supplies the only row of data for each pollutant. Because there is just one station, coverage across the district is limited to that location and does not capture spatial variation elsewhere. The dataset contains recent measurements for particulate matter but older entries for ozone and sulfur dioxide. PM10 and PM2.5 were last updated on 2026‑02‑10 22:00 UTC, while O3 and SO2 retain their most recent timestamps from 2023‑05‑23 00:00 UTC, indicating that the latter two have not been refreshed for more than two years.
All four pollutants are represented: ozone at a constant 0.013 ppm, sulfur dioxide at 0.002 ppm, PM10 fixed at 71.0 µg/m³ and PM2.5 at 46.3 µg/m³. For each pollutant the minimum, median and maximum values are identical, showing that only a single observation is available rather than a range of readings over time. The particulate matter figures are the most current in the set, but even they come from a solitary point measurement, so they describe conditions at one moment rather than an ongoing trend.
Because the data consist of just one row per pollutant, there is no spread to assess variability and the overall picture is sparse. Users should keep in mind that air quality can differ across neighborhoods and over days, and the limited, unevenly refreshed dataset may not reflect present‑day conditions throughout Si Maha Phot District.
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 Si Maha Phot District is based on two valid measurements and was updated within 3 days, with the latest reading recorded at 2026‑02‑10T22:00:00+00:00. This snapshot reflects conditions at a specific time and place; air quality can differ across neighborhoods and throughout the day, so values may not represent the entire district at all times.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Bu Yai Bai Hall Station | o3 | 0.013 | ppm | 2023-05-23 00:00 UTC |
| Bu Yai Bai Hall Station | pm10 | 71.0 | µg/m³ | 2026-02-10 22:00 UTC |
| Bu Yai Bai Hall Station | pm25 | 46.3 | µg/m³ | 2026-02-10 22:00 UTC |
| Bu Yai Bai Hall Station | so2 | 0.002 | ppm | 2023-05-23 00:00 UTC |