Air quality in Surrey Heath, England, United Kingdom today

Mr. Duck’s Air Quality Score

Moderate air today for Surrey Heath, England, United Kingdom

⚠️ 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 Surrey Heath is assessed as Moderate today. The primary pollutant identified is PM2.5, with a measured concentration of 14.18 micrograms per cubic metre based on five valid observations reported through OpenAQ.

Data indicate that fine particulate matter dominates the current profile, while no reference value for PM10 is available. This assessment reflects the latest set of readings 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

Surrey Heath’s OpenAQ feed contains six measured pollutants – PM1, PM2.5, PM10, relative humidity, temperature and UM003 (particle count). The dataset comprises eleven recent rows drawn from two monitoring stations, both located in Lightwater. For five of the pollutants the latest readings were recorded on 2026‑02‑10 at 21:00 UTC, meaning the data are fresh within the past week. PM10 is an outlier: its only available value dates back to 2025‑01‑13 at 23:00 UTC and is therefore considerably older than the rest of the set.

Across the newer measurements the observed ranges show modest variability. PM1 values span from about 0.30 µg/m³ up to a maximum of 7.12 µg/m³, with a median near 3.71 µg/m³; PM2.5 runs between roughly 1.14 µg/m³ and 14.18 µg/m³, medianing at 7.66 µg/m³. Relative humidity varies from 35.65 % to 67.60 %, centred around a median of 51.62 %; temperature ranges between 13.91 °C and 20.51 °C, with a typical value of 17.21 °C. The particle‑count metric UM003 shows the broadest spread, from 247 particles/cm³ up to 1 388 particles/cm³, medianing at about 817 particles/cm³.

Because only two stations contribute data, spatial coverage within Surrey Heath is limited and conditions can differ across neighbourhoods. The predominance of recent timestamps for most pollutants suggests a generally current picture, yet the single outdated PM10 entry highlights an inconsistency in reporting frequency that users should keep in mind when interpreting the overall air‑quality snapshot.

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 reflects five valid measurements and is updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 21:00 UTC. This snapshot provides a current view of air quality across Surrey Heath, but conditions can differ by specific location and time of day within the city, so values may vary locally.

OpenAQ station rows