Air quality in Township of Langley, British Columbia, Canada today

Mr. Duck’s Air Quality Score

Good air today for Township of Langley, British Columbia, Canada

⚠️ 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 the Township of Langley is rated as Good today. The primary pollutant measured is PM2.5, with a reference value of 1.8 µg/m³, and the accompanying PM10 reference value is 3.0 µg/m³. A total of eleven valid measurements were recorded to determine 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 dataset for the Township of Langley pulls in measurements from two monitoring stations and contains twelve individual rows of data. It covers a full suite of pollutants—nitric oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), sulfur dioxide (SO₂), particulate matter of three size fractions (PM₁, PM₂.5, PM₁₀), relative humidity and temperature (recorded as UM003 in the source). All values are drawn from a single update timestamp of 2026‑02‑10 22:00 UTC, so the most recent observations are just under three days old.

Across the two sites the recorded concentrations show limited variation. For the larger particles, PM₁₀ ranges from a low of 3.0 µg/m³ to a high of 9.53 µg/m³ with a median near 6.27 µg/m³, while PM₂.5 spans 0.02 µg/m³ up to 1.8 µg/m³ and centers around 0.91 µg/m³. The smallest fraction, PM₁, is reported at a single value of about 0.00133 µg/m³ from the Walnut Grove location. Gaseous pollutants are similarly uniform: NO is consistently 0.0011 ppm, NO₂ stays at 0.0031 ppm, O₃ at 0.034 ppm and SO₂ at 0.0001 ppm for all rows, each measured at the Langley station.

Relative humidity is captured only once, showing a precise reading of 46.06 % at Walnut Grove. Because every pollutant except temperature has just one or two recent entries, the dataset provides a snapshot rather than a detailed time series. Conditions can differ across neighborhoods and over the course of a day, so while these numbers give an up‑to‑date picture for the moment they were recorded, they do not reflect longer‑term trends or spatial variability within the township.

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 the Township of Langley includes 11 valid measurements and is Updated within 3 days, with the most recent values recorded on 2026‑02‑10T22:00:00+00:00. These figures represent a snapshot of conditions at specific monitoring sites; air quality can differ across neighborhoods and change throughout the day, so local variations may not be captured in this summary.

OpenAQ station rows