Air quality in Cincinnati, Ohio, United States of America today

Mr. Duck’s Air Quality Score

Moderate air today for Cincinnati, Ohio, 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 Cincinnati today is classified as Moderate. The primary pollutant identified is PM2.5, fine particulate matter, with a measured concentration of 24.1 µg/m³. In addition, the PM10 level is recorded at 32.0 µg/m³ based on eleven valid observations.

These values reflect the current assessment provided through OpenAQ data for Cincinnati, Ohio, United States. 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

Cincinnati’s OpenAQ feed includes six common air‑quality gases and particles – carbon monoxide (CO), nitrogen dioxide (NO₂, written as NO2), ozone (O₃), fine particulate matter (PM₂.5), coarse particulate matter (PM₁₀) and sulfur dioxide (SO₂). The dataset is built from 11 individual measurement rows collected at four monitoring stations across the city, giving a modest spatial picture of conditions.

All 11 rows have been refreshed within the past seven days, so the data are relatively current. The most recent update for PM₂.5 was on 2026‑02‑11 00:00 UTC from the Carthage site, reporting a value of 22.3 µg/m³; CO, NO₂, O₃, PM₁₀ and SO₂ were last refreshed on 2026‑02‑10 23:00 UTC at the Taft NCore PAMS station. Across pollutants the median values are tightly clustered: CO sits at 0.35 ppm (range 0.30–0.40), NO₂ at 0.0172 ppm (0.0134–0.021), O₃ is a single reading of 0.05 ppm, PM₁₀ is consistently 32.0 µg/m³, and SO₂ is uniformly 0.0031 ppm.

The spread of measurements varies by pollutant. PM₂.5 shows the widest range, with a minimum of 21.9 µg/m³, a median of 22.25 µg/m³ and a maximum of 24.1 µg/m³, indicating modest variability across the few sites reporting it. In contrast, O₃, PM₁₀ and SO₂ each have only one reported value, so their data provide no insight into spatial differences within Cincinnati. Overall, while the dataset is fresh, coverage is uneven: some pollutants are captured at multiple stations (PM₂.5, CO, NO₂) whereas others rely on a single location, meaning city‑wide conditions may differ from what these snapshots 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 11 valid measurements and was updated today (2026‑02‑11T00:00:00+00:00). While this snapshot provides a current view of Cincinnati’s air quality, conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in these figures.

OpenAQ station rows