Air quality in Lethbridge, Alberta, Canada today

Mr. Duck’s Air Quality Score

Good air today for Lethbridge, Alberta, 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 Lethbridge today is classified as Good. The primary pollutant identified is PM2.5 (fine particles).

Measurements show a PM2.5 concentration of 1.2 µg/m³, based on two valid observations recorded by OpenAQ. This indicates that the current level of fine particulate matter falls within the range associated with the Good category. 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 record for Lethbridge currently includes measurements of fine particulate matter (PM2.5) and ozone (O3). Data are drawn from a small network – two monitoring stations contribute the PM2.5 values while a single station provides the O3 reading, giving modest spatial coverage across the city.

All reported values are recent: the newest timestamp for each pollutant is 2026‑02‑10 22:00 UTC, which falls within the three‑day freshness window used by the source platform. For PM2.5 the dataset contains two rows, showing a minimum concentration of 1.2 µg/m³, a median of 2.9 µg/m³ and a maximum of 4.6 µg/m³; the 10th‑percentile sits at 1.54 µg/m³ and the 90th‑percentile at 4.26 µg/m³. Ozone is represented by a single observation of 0.042 ppm, also recorded at 2026‑02‑10 22:00 UTC.

Because the station count is low, the picture of air quality in Lethbridge is limited to these specific points and times. The PM2.5 data show a modest spread between low and high values, while ozone appears uniform across its single measurement. Users should keep in mind that conditions can differ by neighbourhood and over shorter intervals than those captured here, especially given the sparse monitoring network.

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 Lethbridge includes two valid measurements and was updated within three days, with the latest refresh recorded at 2026‑02‑10 22:00 UTC. This snapshot reflects conditions at a specific time and location; air quality can vary across different parts of the city and change throughout the day.

OpenAQ station rows