Air quality in Newcastle, Washington, United States of America today
Mr. Duck’s Air Quality Score
Good air today for Newcastle, New South Wales, Australia
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Newcastle, Washington is classified as Good today. The primary pollutant measured is PM2.5 (fine particles), with a reported reference value of 0.0 µg/m³ based on ten valid observations.
Data from OpenAQ indicate that the fine particle concentration remains at the reference level, and no other pollutants are highlighted in this assessment. 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 dataset for Newcastle, Washington includes six measured variables collected from a single monitoring location at Lake Boren. The pollutants and parameters available are PM1, PM10, PM2.5, relative humidity, temperature and the particle count UM003. For each variable there is one recorded value, so the coverage consists of six rows in total.
The most recent observations were uploaded on 2026-02-11 00:00 UTC for PM1, PM2.5, relative humidity, temperature and UM003, indicating that these five measurements are current within the last 30 days. The PM10 reading is older, with its last update on 2025-01-13 23:00 UTC, which classifies it as “old” data in the source set. All values are exact rather than ranges: PM1 and PM2.5 both register at 0.0 µg/m³, while PM10 shows a single value of 17.73616663614909 µg/m³. Relative humidity is recorded at 40.09066651662191 %, temperature at 16.214333422978722 °C and UM003 at 0.6916666666666668 particles/cm³.
Because the dataset contains only one station, spatial variation across Newcastle cannot be captured; conditions may differ in other neighborhoods or at different times of day. The uniformity of the PM1 and PM2.5 readings (both zero) alongside a non‑zero PM10 value highlights an uneven data profile among particulate metrics. Likewise, the freshness gap for PM10 means that recent trends for coarse particles are not reflected, while the other parameters provide up‑to‑date snapshots of the local environment.
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 for Newcastle, Washington reflects ten valid measurements and was Updated today (2026‑02‑11T00:00:00+00:00). This snapshot represents conditions at the time of collection; air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment within the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Lake Boren | pm1 | 0.0 | µg/m³ | 2026-02-11 00:00 UTC |
| Lake Boren | pm10 | 17.73616663614909 | µg/m³ | 2025-01-13 23:00 UTC |
| Lake Boren | pm25 | 0.0 | µg/m³ | 2026-02-11 00:00 UTC |
| Lake Boren | relativehumidity | 40.09066651662191 | % | 2026-02-11 00:00 UTC |
| Lake Boren | temperature | 16.214333422978722 | c | 2026-02-11 00:00 UTC |
| Lake Boren | um003 | 0.6916666666666668 | particles/cm³ | 2026-02-11 00:00 UTC |