Air quality in Yuanlin City, Taiwan today
Mr. Duck’s Air Quality Score
Moderate air today for Yuanlin City, Taiwan
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Yuanlin City is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 23.0 and a PM10 reference value of 33.0, based on six valid observations collected via OpenAQ.
These figures reflect the present conditions without implying any trend or cause. 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
Yuanlin City’s air‑quality feed draws from two monitoring sites that together contribute twelve recent observations. All six key 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 in the dataset, and each measurement was last refreshed on 2026‑02‑10 at 23:00 UTC, well within the seven‑day freshness window used for this reporting.
The recorded values show a modest spread across the pollutants. CO levels range from 0.26 ppm to 0.39 ppm with a median of 0.33 ppm; NO₂ varies between 0.008 ppm and 0.018 ppm, centering around 0.013 ppm; O₃ is observed from 0.015 ppm up to 0.023 ppm, with a typical value near 0.019 ppm. Particulate matter exhibits broader variation: PM10 values sit between 12 µg/m³ and 33 µg/m³ (median 22.5 µg/m³), while PM2.5 spans 5 µg/m³ to 23 µg/m³ (median 14 µg/m³). SO₂ is the lowest‑concentration gas, recorded from 0.0016 ppm to 0.003 ppm with a median of 0.0023 ppm.
Because only two stations contribute data, spatial coverage across Yuanlin City is limited; conditions can differ in neighborhoods not directly monitored. Nonetheless, the dataset provides a recent snapshot for each pollutant, and the uniform freshness indicates that all six measurements are contemporaneous, allowing direct comparison of their current ranges.
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 Yuanlin City is based on six valid measurements and was refreshed recently, with the latest update recorded at 2026‑02‑10T23:00:00+00:00 (updated within 3 days). This snapshot reflects conditions at the time of collection; 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
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 彰化縣 - 彰化（員林） | co | 0.26 | ppm | 2024-12-26 03:00 UTC |
| 彰化縣 - 彰化（員林） | no2 | 0.008 | ppm | 2024-12-26 03:00 UTC |
| 彰化縣 - 彰化（員林） | o3 | 0.023 | ppm | 2024-12-26 02:00 UTC |
| 彰化縣 - 彰化（員林） | pm10 | 12.0 | µg/m³ | 2024-12-26 03:00 UTC |
| 彰化縣 - 彰化（員林） | pm25 | 5.0 | µg/m³ | 2024-12-26 03:00 UTC |
| 彰化縣 - 彰化（員林） | so2 | 0.0016 | ppm | 2024-12-26 03:00 UTC |
| 彰化縣 - 員林 | co | 0.39 | ppm | 2026-02-10 23:00 UTC |
| 彰化縣 - 員林 | no2 | 0.018 | ppm | 2026-02-10 23:00 UTC |
| 彰化縣 - 員林 | o3 | 0.015 | ppm | 2026-02-10 23:00 UTC |
| 彰化縣 - 員林 | pm10 | 33.0 | µg/m³ | 2026-02-10 23:00 UTC |
| 彰化縣 - 員林 | pm25 | 23.0 | µg/m³ | 2026-02-10 23:00 UTC |
| 彰化縣 - 員林 | so2 | 0.003 | ppm | 2026-02-10 23:00 UTC |