Air quality in Williams Lake, British Columbia, Canada today

Mr. Duck’s Air Quality Score

Good air today for Williams Lake, 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 today in Williams Lake is rated as Good. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 8.4 and a PM10 reference value of 43.0, based on five valid observations.

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 air‑quality feed for Williams Lake currently draws from five recent observations, all recorded at the same monitoring point labeled “Williams Lake Column.” Each of the five pollutants tracked by OpenAQ – nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter up to 10 µm (PM₁₀) and fine particulate matter up to 2.5 µm (PM₂.₅) – has a single reported value because the dataset contains only one row per pollutant. The most recent timestamp for every measurement is 2026‑02‑10 22:00 UTC, which falls within the “updated within three days” freshness window, indicating that the data are currently up‑to‑date.

Because each pollutant appears in just one row, there is no statistical spread to report; the minimum, median and maximum values are identical for every constituent. NO registers at 0.0029 ppm, NO₂ at 0.0065 ppm, O₃ at 0.025 ppm, PM₁₀ at 43.0 µg/m³ and PM₂.₅ at 8.4 µg/m³. This uniformity means the dataset does not capture variability across different locations within the city or over time, so any single reading should be understood as a snapshot rather than a representation of broader conditions.

Overall, the coverage is limited to one monitoring column and five recent rows, with all data points freshly recorded. The lack of multiple stations or repeated measurements means that temporal trends or spatial differences cannot be assessed from this source alone. Users should keep in mind that air quality can change throughout the day and across neighborhoods, so additional observations would be needed for a more complete picture of Williams Lake’s atmospheric environment.

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 Williams Lake is based on five valid measurements and was refreshed recently, with the latest update recorded at 2026‑02‑10T22:00:00+00:00 (Updated within 3 days). These readings provide a snapshot of current conditions, but air quality can vary across different neighbourhoods and times of day within the city, so local variations may not be fully captured in this summary.

OpenAQ station rows