Air quality in Brentwood, California, United States of America today
Mr. Duck’s Air Quality Score
Moderate air today for Brentwood, California, 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 Brentwood, California is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles), with a measured concentration of 31.32 µg/m³ based on five valid observations reported through OpenAQ.
These measurements indicate that particulate matter levels are present but do not exceed the thresholds for higher concern categories. 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 Brentwood, California dataset contains five recent sensor records covering a single monitoring location. All five rows include measurements for PM1, PM2.5, relative humidity, temperature and the particle count metric UM003, so every listed pollutant is represented in the same set of observations.
Each pollutant’s most recent reading was recorded on 2026-02-11 at 01:00 UTC, meaning the data are fresh within the last seven days. The values are uniform across the five rows because each sensor reported a single measurement for the timestamp: PM1 is consistently 19.28616666793823 µg/m³, PM2.5 stays at 31.31666669845581 µg/m³, relative humidity is fixed at 61.35933329264322 %, temperature registers 15.403166516621907 °C, and UM003 records 1 012.9526662190755 particles/cm³. Because the minimum, median, maximum, 10th percentile and 90th percentile are identical for every pollutant, there is no observed spread or variation within this limited sample.
With only one station contributing data, the coverage is narrow; city‑wide conditions could differ in other neighborhoods or at different times of day. The dataset’s freshness is good—the latest update falls well inside the “updated within 7 days” window—but the lack of multiple locations or repeated measurements means the current snapshot cannot capture temporal fluctuations or spatial diversity across Brentwood.
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 Brentwood air‑quality data set includes five valid measurements and was updated today (2026‑02‑11T01:00:00+00:00). These readings represent a snapshot of conditions across the city at that time; actual pollutant levels can differ by neighborhood, micro‑climate and hour‑by‑hour changes. Use this information as a general reference rather than a precise forecast for any specific location within Brentwood.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Brentwood CA | pm1 | 19.28616666793823 | µg/m³ | 2026-02-11 01:00 UTC |
| Brentwood CA | pm25 | 31.31666669845581 | µg/m³ | 2026-02-11 01:00 UTC |
| Brentwood CA | relativehumidity | 61.35933329264322 | % | 2026-02-11 01:00 UTC |
| Brentwood CA | temperature | 15.403166516621907 | c | 2026-02-11 01:00 UTC |
| Brentwood CA | um003 | 1012.9526662190755 | particles/cm³ | 2026-02-11 01:00 UTC |