Air quality in Crescent City, California, United States of America today
Mr. Duck’s Air Quality Score
Good air today for Crescent City, 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 Crescent City today is classified as Good. The primary pollutant measured is PM2.5 (fine particles). A single valid observation recorded a PM2.5 concentration of 7.0 µg/m³, which serves as the reference value for this assessment.
Data are shown via OpenAQ and reflect the current monitoring conditions. 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 current station data listed for this city is focused on particulate matter (PM). Only PM2.5 measurements are available from OpenAQ, coming from three recent rows that represent two monitoring stations in Crescent City. The most recent reading was recorded at 2026‑02‑10 23:00 UTC, which falls within the “updated within 7 days” freshness category; however, one of the three rows is older than a week, and none of the data were captured today.
Across the available observations, PM2.5 values range from a low of 7.0 µg/m³ to a high of 9.0 µg/m³, with a median of 9.0 µg/m³ and a 10th‑percentile at 7.4 µg/m³. This narrow spread suggests limited variability in the recorded measurements, but the small number of stations and the presence of an older data point mean the picture is incomplete. Consequently, while the recent snapshot gives a clear sense of current particulate levels, conditions can differ across neighborhoods and times not captured by these few entries.
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 current air‑quality reading for Crescent City is based on a single valid measurement and was updated within 3 days, with the latest data recorded at 2026‑02‑10 23:00 UTC. This snapshot reflects conditions at that specific time; actual air quality can differ across neighborhoods and may change throughout the day.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Crescent City | pm25 | 9.0 | µg/m³ | 2024-07-11 15:00 UTC |
| MMNPS1027 | pm25 | 9.0 | µg/m³ | 2021-08-14 09:00 UTC |
| Crescent City | pm25 | 7.0 | µg/m³ | 2026-02-10 23:00 UTC |