Air quality in Om Noi, Thailand today
Mr. Duck’s Air Quality Score
Unhealthy for sensitive groups for Om Noi, Thailand
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Om Noi is classified as USG today. The primary pollutant identified is PM2.5 (fine particles).
Measurements from five valid observations show a PM2.5 concentration of 45.6 µg/m³. No PM10 value is available for this assessment. Data is 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 Om Noi air‑quality dataset currently contains six individual pollutant readings drawn from a single monitoring location in the Highway District. All six standard pollutants—carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤10 µm (PM₁₀), particulate matter ≤2.5 µm (PM₂.₅) and sulfur dioxide (SO₂)—are represented, but the data are not evenly distributed in time. CO, NO₂, O₃, PM₂.5 and SO₂ each have a most‑recent record dated 2026‑02‑10 22:00 UTC, which falls within the “updated within 7 days” freshness category. By contrast, the PM₁₀ measurement is much older, last recorded on 2022‑05‑11 16:00 UTC and flagged as old data.
Across the five recent pollutants the reported values are identical for each metric: CO sits at 0.7 ppm, NO₂ at 0.036 ppm, O₃ at 0.016 ppm, PM₂.₅ at 45.6 µg/m³ and SO₂ at 0.008 ppm. Because there is only one row per pollutant, the minimum, median, maximum, 10th‑percentile and 90th‑percentile figures are all the same, indicating no observed variability in this snapshot. The lone PM₁₀ reading shows a value of 27.0 µg/m³, also without any spread.
These facts highlight two practical points for users. First, the dataset offers a complete set of common pollutants but relies on a single monitoring site, so spatial coverage across Om Noi is limited. Second, while most measurements are fresh, the PM₁₀ data are several years old, meaning that current fine‑particle conditions cannot be inferred from this source alone. Consequently, any interpretation of city‑wide air quality should consider both the narrow geographic focus and the mixed recency of the available readings.
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 current dataset for Om Noi includes five valid measurements and is marked as Updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 22:00 UTC. This snapshot reflects conditions at a specific time and location; air quality can vary across different parts of the city and over short periods, so values may differ from what you experience elsewhere or later in the day.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Highway District | co | 0.7 | ppm | 2026-02-10 22:00 UTC |
| Highway District | no2 | 0.036 | ppm | 2026-02-10 22:00 UTC |
| Highway District | o3 | 0.016 | ppm | 2026-02-10 22:00 UTC |
| Highway District | pm10 | 27.0 | µg/m³ | 2022-05-11 16:00 UTC |
| Highway District | pm25 | 45.6 | µg/m³ | 2026-02-10 22:00 UTC |
| Highway District | so2 | 0.008 | ppm | 2026-02-10 22:00 UTC |