Air quality in Detroit, Michigan, United States of America today

Mr. Duck’s Air Quality Score

Unhealthy air today for Detroit, Michigan, 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 Detroit, Michigan is currently classified as Unhealthy. The primary pollutant identified is PM2.5 (fine particles). The measured PM2.5 concentration is 59.3 µg/m³. No PM10 data is available for this assessment. The reference value for PM2.5 used in the evaluation is 59.26066691080729 µg/m³, matching the reported concentration. This result is based on 68 valid measurements collected over the recent sampling period. All measurements were taken within the same day.

Data is shown via OpenAQ. The dataset reflects the latest reported values for the city. The information is updated as new data become available through the OpenAQ platform. Users can consult the OpenAQ website for additional details on the monitoring stations. 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 Detroit air‑quality feed draws from 77 data rows collected at 18 monitoring sites, with 69 of those rows refreshed within the last 30 days and the remaining eight dating back further. The current set includes measurements for nitrogen monoxide (NO), nitrogen dioxide (NO₂), nitrogen oxides (NOX), fine particulate matter (PM₂.5), coarse particulate matter (PM₁), relative humidity, temperature, and particle count (UM003). Sensors for carbon monoxide (CO), ozone (O₃) and sulfur dioxide (SO₂) are listed among the city’s monitored pollutants but do not appear in the present rows, so no recent values are available for those gases.

Across the recent records, PM₂.5 values span from 0 µg/m³ up to about 59 µg/m³, with a median of 32.45 µg/m³ and the middle 80 % of observations falling between roughly 20 µg/m³ (10th percentile) and 51 µg/m³ (90th percentile). PM₁ shows a similar pattern, ranging from 0 to 37.4 µg/m³, a median of 30.46 µg/m³, and a tighter central band of 3.2 µg/m³ to 33 µg/m³. Relative humidity is fairly consistent, varying between 41.95 % and 45.80 % with a median of 43.71 % and most readings clustered between 42.7 % and 44.7 %. Temperature readings cover a broader spread from –6.95 °C to 10.18 °C, centering on a median of 9.58 °C, while particle concentration (UM003) ranges widely from 63 particles/cm³ to 2,244 particles/cm³, median 1,352 particles/cm³, and the bulk of data between about 279 and 1,797 particles/cm³. Nitrogen species are less densely sampled: NO values range from 0.0005 ppm to 0.0096 ppm (median 0.0031 ppm), NO₂ from 0.0082 ppm to 0.029 ppm (median 0.0186 ppm), and NOX from 0.0151 ppm to 0.0386 ppm (median 0.0247 ppm).

The newest timestamps in the dataset are from 2026‑02‑11 01:00 UTC for the particulate, humidity, temperature and UM003 measurements, and from 2026‑02‑10 23:00 UTC for the nitrogen‑oxide series. Coverage is uneven: PM₂.5, PM₁, humidity, temperature and UM003 each have 18 rows, while NO, NO₂ and NOX have only six, six and five rows respectively, reflecting a sparser network for gaseous pollutants. Because the data are drawn from multiple locations and some rows are older, the reported values represent a snapshot that can differ across neighborhoods and times of day.

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 dataset includes 68 valid measurements and is updated within 30 days. The most recent data were recorded on 2026-02-11T01:00:00+00:00. This snapshot reflects conditions across Detroit, Michigan, but air quality can vary by location and time within the city. Users should consider these variations when interpreting the information.

OpenAQ station rows