Air quality in City of Rochester, New York, United States of America today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for City of Rochester, New York, 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 today in Rochester, New York is classified as USG. The primary pollutant identified is PM2.5 (fine particles). Measurements from eight valid monitoring stations show a PM2.5 concentration of 45.0 µg/m³.

No other pollutants reached reporting thresholds, and the data are presented through OpenAQ. 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 OpenAQ feed for Rochester, New York includes measurements of ozone (O₃), fine particulate matter (PM₂.5), coarse particles (PM₁₀), ultrafine particles (PM₁), relative humidity, temperature and particle number concentration (UM003). The dataset comprises 14 rows from four distinct monitoring stations, but the coverage is uneven: PM₂.5, PM₁, relative humidity, temperature and UM003 each have recent readings from two stations, while O₃ is reported by a single station and PM₁₀ appears only once with no timestamp information.

The most up‑to‑date observations were recorded on 2026-02-11 01:00 UTC for PM₂.5 (maximum 45.022 µg/m³ at The Wedge), PM₁ (maximum 29.861 µg/m³ at The Wedge), relative humidity (minimum 50.823 % at The Wedge), temperature (minimum 8.699 °C at The Wedge) and UM003 (maximum 1,353.133 particles/cm³ at The Wedge). Ozone was last updated on 2026-02-10 23:00 UTC with a single value of 0.018 ppm reported from Rochester. PM₁₀ lacks a timestamp, so its freshness cannot be assessed.

Across the available data the range of values varies considerably. For PM₂.5 the spread runs from about 7.65 to 45.02 µg/m³ with a median near 20.75 µg/m³; PM₁ shows a similar breadth, ranging from roughly 1.36 to 29.86 µg/m³ and centering around 15.61 µg/m³. Relative humidity spans 50.8 % to 93.4 %, while temperature covers 8.70 °C to 18.55 °C, indicating typical daily fluctuations. UM003 particle counts range from 548 to 1,353 particles/cm³ with a median of about 951, reflecting variability in aerosol concentration. Because many pollutants are reported by only one or two stations and some timestamps are missing, the snapshot does not capture city‑wide conditions uniformly; air quality can differ across neighborhoods and times beyond what these limited rows show.

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 eight valid measurements and was updated today (last refreshed at 2026‑02‑11T01:00:00+00:00). These values provide a current snapshot of Rochester’s air quality, but conditions can differ across neighborhoods and change throughout the day, so this information represents only a brief moment in time for the city as a whole.

OpenAQ station rows