Air quality in Squamish, British Columbia, Canada today

Mr. Duck’s Air Quality Score

Good air today for Squamish, 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

Today the air quality in Squamish, British Columbia is classified as Good. The primary pollutant identified is PM2.5. The most recent measurement reports a PM2.5 concentration of 0.0 µg/m³, derived from ten valid observations collected today.

These results are displayed via OpenAQ, which compiles information from participating monitoring stations. The reference value for PM2.5 is 0.0, which aligns with the observed concentration. For this reporting period, PM10 data is not applicable, and the overall rating reflects the ten valid measurements of PM2.5. All ten measurements were recorded within the current day, and no other pollutants met the criteria for reporting in this cycle. 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 Squamish air‑quality feed draws from ten recent rows collected at two monitoring sites. Both the Garibaldi Highlands and Squamish Elementary stations contribute data, giving coverage for eight of the listed pollutants: NO, NO₂, O₃, PM₁, PM₂.₅, SO₂, relative humidity and temperature. The ninth item, UM003, does not appear in the current set of records, so no values are reported for it at this time.

The most recent measurements were recorded on 2026‑02‑10 22:00 UTC for PM₂.₅, PM₁, relative humidity and temperature, while the gas‑phase species (NO, NO₂, O₃ and SO₂) were last updated on 2026‑01‑29 06:00 UTC. Compared with today’s date (2026‑02‑23), the freshest data are about two weeks old and the older set is roughly three and a half weeks old. All timestamps are marked as “Updated within 30 days,” indicating that the dataset is still considered current by the source, but the spread of update times shows that some parameters are refreshed less frequently than others.

Across the ten rows, the numeric spread is very narrow. For the gases, each reading is a single constant value: NO 0.0005 ppm, NO₂ 0.0033 ppm, O₃ 0.017 ppm and SO₂ 0.0006 ppm, with identical minimum, median and maximum figures. PM₂.₅ shows a broader range, from 0.0 µg/m³ up to 1.9 µg/m³, a median of 0.95 µg/m³ and a 10‑90 percentile band of 0.19‑1.71 µg/m³. PM₁, relative humidity (52.79 %) and temperature (14.65 °C) each have a single observed value. This pattern reflects the limited number of stations and the fact that some pollutants are measured only at one site, so city‑wide conditions may vary by location and time beyond what the current rows capture.

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

This dataset includes 10 valid measurements and is updated within 30 days. The most recent data were recorded on 2026-02-10T22:00:00+00:00. While these values provide a current snapshot for Squamish, British Columbia, air quality can vary by location and time within the city, so conditions at specific sites may differ from the reported averages.

OpenAQ station rows