Air quality in Derry Township, Pennsylvania, United States of America today
Mr. Duck’s Air Quality Score
Moderate air today for Derry Township, Pennsylvania, United States of America
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Derry Township, Pennsylvania is classified as Moderate today. The primary pollutant identified is PM2.5 (fine particles), with a measured concentration of 27.2 µg/m³ based on two valid observations reported through OpenAQ.
Data indicate that fine particulate matter is the dominant factor influencing the current air quality 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 air‑quality dataset for Derry Township, Pennsylvania includes measurements for two key pollutants: ozone (O3) and fine particulate matter (PM2.5). Both are reported from a single monitoring location in Hershey, giving the city one data row per pollutant. The most recent readings were recorded on 2026-02-10 at 23:00 UTC, and each falls within the “updated within 7 days” freshness category, meaning the available values are current as of early February.
For ozone, the sensor reports a constant value of 0.029 ppm across its minimum, median, and maximum statistics, indicating no observed variation in the limited sample set. The PM2.5 measurement is similarly uniform, with a single reported concentration of 27.2 µg/m³ for all statistical points. Because each pollutant has only one recorded value, there is no spread or percentile range to describe; the data essentially represent a snapshot rather than a distribution.
The dataset’s coverage is narrow: only two rows exist—one for O3 and one for PM2.5—and both originate from the same site. Consequently, spatial representation across Derry Township is limited, and temporal depth is shallow, with no older or unknown‑age entries in the record. While the timestamps are fresh, the lack of multiple stations or repeated measurements means that conditions can differ elsewhere in the township or change over time without being captured here. Users should keep in mind that this snapshot provides a very specific point‑in‑time view rather than a comprehensive picture of air quality across the entire area.
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 two valid measurements and is marked as Updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 23:00 UTC. This snapshot provides a brief view of current conditions; however, air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in Derry Township.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Hershey | o3 | 0.029 | ppm | 2026-02-10 23:00 UTC |
| Hershey | pm25 | 27.2 | µg/m³ | 2026-02-10 23:00 UTC |