Air quality in Delano, California, United States of America today

Mr. Duck’s Air Quality Score

Moderate air today for Delano, California, 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 Delano, California is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 12.56 µg/m³ based on 65 valid observations reported through OpenAQ.

Data for other pollutants are not available at this time. 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

Delano’s OpenAQ feed currently provides five measured pollutants – PM1, PM2.5, relative humidity, temperature and UM003 (particle concentration) – drawn from 13 sensor rows that all report the same last‑updated timestamp of 2026‑02-11 01:00 UTC, meaning the most recent data are less than a week old for every parameter.

Across the 13 observations, PM1 values range from just above 0.08 µg/m³ to 18.40 µg/m³, with a median of about 2.32 µg/m³ and the middle‑90 % falling between roughly 1.76 and 7.25 µg/m³. PM2.5 shows a broader spread, from 0.60 µg/m³ up to 29.03 µg/m³; its median is 3.47 µg/m³ and the 10th‑90th percentile band stretches from 2.78 to 11.14 µg/m³. Relative humidity measurements sit between 27.94 % and 51.95 %, centering on a median of 31.20 % with most values clustered between about 29.60 % and 35.65 %. Temperature is comparatively tight, varying from 18.75 °C to 23.05 °C, a median of 21.01 °C and a typical range of roughly 20.16 °C to 21.78 °C. UM003 particle counts span the widest interval, from 271 particles/cm³ up to 3,592 particles/cm³; the median sits at 642 particles/cm³ while the central 80 % of readings lie between about 587 and 2,453 particles/cm³.

Because all rows share the same recent timestamp, coverage is uniformly fresh but limited to a single colocated site on Cecil Avenue (SJVAir). The dataset therefore captures a snapshot rather than city‑wide spatial variation; conditions elsewhere in Delano may differ. Nonetheless, the data give a clear picture of current ambient levels for each pollutant, showing modest typical values for PM1 and PM2.5, relatively low humidity and temperature variability, and a wide dispersion in particle concentration counts.

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 set for Delano, California includes 65 valid measurements and was Updated today (last refreshed at 2026‑02‑11T01:00:00+00:00). These readings represent a snapshot of ambient conditions captured across the monitoring network. Keep in mind that air quality can vary by location and time within the city, so values may differ from one neighborhood or hour to another.

OpenAQ station rows