Air quality in Chicopee, Massachusetts, United States of America today
Mr. Duck’s Air Quality Score
Good air today for Chicopee, Massachusetts, 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 Chicopee, Massachusetts is classified as Good today. The primary pollutant measured is PM2.5, with a reported concentration of 5.5 µg/m³ based on five valid observations from OpenAQ data.
Overall conditions meet the criteria for a Good rating, and no other pollutants have been identified as dominant 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 Chicopee dataset contains a single monitoring location that reports six common air‑quality gases and particles: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), ozone (O₃) and fine particulate matter (PM2.5). All six pollutants are present, but the record count is limited to one row per pollutant, so the coverage reflects a single site rather than a city‑wide network.
The most recent measurement timestamps differ by pollutant. CO was last recorded on 2018-01-19 15:00 UTC, making it over eight years old, while NO, NO₂, NOX, O₃ and PM2.5 were all updated on 2026-02-10 23:00 UTC, which is within the past week. This means that five of the six parameters provide very fresh data, but carbon monoxide information is outdated.
Across the pollutants the reported values are uniform with no observed variation: CO consistently reads 0.25 ppm, NO 0.002 ppm, NO₂ 0.01 ppm, NOX 0.013 ppm and O₃ 0.033 ppm, each matching their minimum, median and maximum statistics. PM2.5 is a single constant value of 5.5 µg/m³. Because every statistic (minimum, 10th percentile, median, 90th percentile and maximum) is identical, the dataset does not reveal any spread or temporal fluctuation for any pollutant at this site.
Overall, the data set offers a snapshot of current conditions for five pollutants but relies on a single monitoring point and an old CO reading. Consequently, while the fresh measurements give a recent picture of most gases and particles, they cannot capture spatial differences across Chicopee or changes that might occur outside the limited sampling location.
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 current data set for Chicopee includes five valid measurements and was updated within three days, with the latest refresh recorded at 2026‑02‑10T23:00:00+00:00. These readings represent a snapshot of conditions across the monitoring network at that time. Air quality can vary by location and time within the city, so individual experiences may differ from the values shown here.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| CHICOPEE | co | 0.25 | ppm | 2018-01-19 15:00 UTC |
| CHICOPEE | no | 0.002 | ppm | 2026-02-10 23:00 UTC |
| CHICOPEE | no2 | 0.01 | ppm | 2026-02-10 23:00 UTC |
| CHICOPEE | nox | 0.013 | ppm | 2026-02-10 23:00 UTC |
| CHICOPEE | o3 | 0.033 | ppm | 2026-02-10 23:00 UTC |
| CHICOPEE | pm25 | 5.5 | µg/m³ | 2026-02-10 23:00 UTC |