Air quality in West Northamptonshire, England, United Kingdom today

Mr. Duck’s Air Quality Score

Moderate air today for West Northamptonshire, England, United Kingdom

⚠️ 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 West Northamptonshire today falls into the Moderate category according to the Duck score assessment. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 14.13 µg/m³ based on thirteen valid readings collected via OpenAQ.

No other pollutants reached reporting thresholds, and the data set does not include a PM10 value. This snapshot reflects the current conditions without projecting future changes. 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 West Northamptonshire dataset contains measurements for eight pollutants – nitrogen dioxide (NO2), ozone (O3), PM1, PM2.5, PM10, relative humidity, temperature and particle count (UM003). The data come from three monitoring stations that together provide 17 recent rows of observations. The most up‑to‑date records were captured on 2026‑02‑10 at 21:00 UTC for PM2.5, PM1, relative humidity, temperature and UM003, while NO2 and O3 were last updated a little earlier on 2026‑02‑10 at 19:00 UTC. The only older entry is the PM10 reading from 2025‑01‑13 at 23:00 UTC.

Across the pollutants the observed values show modest variation. For PM2.5 the median concentration is about 13.17 µg/m³, with a minimum of 10.0 and a maximum of 14.13 µg/m³; the interdecile range (10th‑90th percentile) spans roughly 10.63 to 13.94 µg/m³. NO2 values range from 15.0 to 28.5 µg/m³, median 21.75 µg/m³ and a 10th‑90th spread of 16.35–27.15 µg/m³. Ozone measurements sit between 45.70 and 60.0 µg/m³, median 52.85 µg/m³, with the central 80 % ranging from 47.13 to 58.57 µg/m³. The finer particles (PM1) are tightly clustered around a median of 8.98 µg/m³, varying only from 8.81 to 9.14 µg/m³. PM10 shows the narrowest range, 5.998–6.415 µg/m³, median 6.21 µg/m³.

The dataset is relatively fresh for most pollutants, with the newest timestamps all within the last two days, but coverage is uneven: three stations contribute data for six of the eight parameters, while PM10 relies on a single older record. Consequently, while the current snapshot gives a clear picture of recent conditions at the reporting sites, actual air quality can differ across other parts of West Northamptonshire and over longer periods.

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 West Northamptonshire is based on 13 valid measurements and was refreshed within the past three days, with the latest update recorded at 2026‑02‑10T21:00:00+00:00. This snapshot reflects conditions at a specific time and may not represent variations across different neighbourhoods or moments throughout the day, so local air quality can differ from what is displayed here.

OpenAQ station rows