Air quality in St Brelade, Jersey today

Mr. Duck’s Air Quality Score

Good air today for St Brelade, Jersey

⚠️ 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 St Brelade is currently classified as Good. The main pollutant identified is PM2.5 (fine particles), with a measured concentration of 5.31 µg/m³ based on two valid observations reported through OpenAQ.

Data indicate that the current conditions meet the criteria for the Good category, and no additional pollutants have been highlighted in this assessment. 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 current station data listed for this city is focused on particulate matter (PM). Only PM2.5 measurements are available, coming from two sensor rows that both report values in micrograms per cubic metre. The most recent reading was recorded at La Moye School on 2026-02-10 23:00 UTC, and the dataset notes that updates have been made within the past three days, indicating fairly fresh coverage for this pollutant.

Across the two rows, PM2.5 concentrations range from a low of 3.31 µg/m³ to a high of 5.31 µg/m³, with a median value of 4.31 µg/m³ and the 10th‑percentile at about 3.51 µg/m³ and the 90th‑percentile near 5.11 µg/m³. Because only two stations contribute data, spatial representation is limited to the immediate area around La Moye School, so conditions elsewhere in St Brelade may differ. Nonetheless, the available measurements are recent and show a relatively narrow spread of values within this small sample.

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 St Brelade is based on two valid measurements and was refreshed within the past three days, with the latest update recorded at 2026‑02‑10T23:00:01+00:00. This snapshot reflects conditions at a specific time and place; air quality can differ across neighborhoods and vary throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows