Air quality in South Huron, Ontario, Canada today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for South Huron, Ontario, 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 South Huron, Ontario is classified as USG. The primary pollutant identified is PM2.5 (fine particles). Measurements from OpenAQ show a PM2.5 concentration of 36.0 µg/m³ based on five valid observations.

No additional pollutants reached reporting thresholds, and the data set includes only the noted fine particle value. 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

South Huron’s air‑quality feed draws from a single monitoring site that contributed eight separate rows of data, each representing one of the five tracked pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), combined nitrogen oxides (NOX), ozone (O₃) and fine particulate matter (PM2.5). All of the most recent measurements were recorded at 2026‑02‑10 22:00 UTC, which means the dataset is current within the last three days for every pollutant.

The numeric values show a narrow spread for the gases but a broader range for particulates. NO and NOX are essentially constant, with NO reported as 0.0 ppm and NOX at 0.006 ppm across the single station. NO₂ varies between 0.003 ppm and 0.005 ppm, with a median of 0.004 ppm; the tenth‑percentile sits at 0.0032 ppm and the ninetieth‑percentile at 0.0048 ppm, indicating very little fluctuation in nitrogen dioxide levels during the reporting period. Ozone is recorded as a single value of 0.04 ppm, again showing no observed variation.

Particulate matter exhibits the greatest variability: concentrations range from 24 µg/m³ up to 36 µg/m³, with a median of 30 µg/m³. The tenth‑percentile (25.2 µg/m³) and ninetieth‑percentile (34.8 µg/m³) illustrate that while most readings cluster around the middle of the range, occasional higher values are present. Because the data come from only one location, they capture conditions at Grand Bend but may not reflect micro‑scale differences elsewhere in South Huron. Overall, the dataset is fresh and complete for the listed pollutants, though its limited spatial coverage means broader city‑wide patterns cannot be inferred from these numbers alone.

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 are based on five valid measurements and were updated within 3 days, with the most recent reading recorded at 2026‑02‑10T22:00:00+00:00. While this snapshot reflects current conditions across South Huron, air quality can differ by specific neighbourhoods and change throughout the day, so local variations may exist.

OpenAQ station rows