Air quality in Haddonfield, New Jersey, United States of America today

Mr. Duck’s Air Quality Score

Moderate air today for Haddonfield, New Jersey, United States of America

⚠️ 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 Haddonfield, New Jersey is currently classified as Moderate. The primary pollutant identified for today is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 17.90 µg/m³ based on five valid observations reported through OpenAQ.

Overall conditions reflect the Moderate category with no additional pollutants highlighted. 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 Haddonfield air‑quality feed draws from six sensor rows supplied by OpenAQ, each reporting a single measurement type. All six pollutants are represented: fine particles (PM1 at 9.41 µg/m³), coarse particles (PM10 at 10.30 µg/m³), the widely tracked PM2.5 fraction (17.90 µg/m³), relative humidity (25.66 %), temperature (10.53 °C) and particle count in the ultrafine range (UM003 at 686.26 particles/cm³). All values come from the same contributor, Lizzie Haddon, and are expressed with their respective units.

Freshness varies across the dataset. Five of the six measurements were last updated on 2026‑02‑10 17:00 UTC, indicating very recent data for PM1, PM2.5, relative humidity, temperature and UM003. The PM10 reading is older, with its most recent timestamp on 2025‑01‑13 23:00 UTC, so it reflects conditions from more than a year ago. Because the station count is limited to a single reporting location, the data provide a snapshot rather than citywide coverage; spatial variation cannot be assessed from this set.

The numeric spread is minimal because each pollutant has only one recorded value, making the median identical to the minimum and maximum for every metric. This uniformity means there is no observed variability within the current sample. Consequently, while the recent timestamps give confidence in the timeliness of most pollutants, the lone outdated PM10 entry highlights a gap that could affect any analysis relying on that specific measure. Users should keep in mind that conditions can differ across neighborhoods and times not captured by these six rows.

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 reflects five valid measurements and is updated within three days, with the most recent reading recorded on 2026‑02‑10 at 17:00 UTC. This snapshot provides a brief view of current conditions; however, air quality can vary by location and time within Haddonfield, New Jersey, so values may differ across neighborhoods or later in the day.

OpenAQ station rows