Stay updated with real-time air quality in Ellensburg, Washington featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
17
Good
Ellensburg, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.90 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
4.01 μg/m³
0
55
155
255
425
605+
18.39 ppb
0
55
71
86
201
201+
0.44 ppb
0
36
76
186
605
1005+
2.82 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Ellensburg, Washington
Ellensburg, Washington
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AQI 19
Good
2.30μg/m³
PM2.5
9.02μg/m³
PM10
20.66ppb
O3
1.53ppb
SO2
2.83ppb
NO2
0.12ppm
CO
AQI 18
Good
2.89μg/m³
PM2.5
11.62μg/m³
PM10
18.93ppb
O3
2.17ppb
SO2
2.81ppb
NO2
0.10ppm
CO
AQI 18
Good
2.97μg/m³
PM2.5
11.90μg/m³
PM10
18.94ppb
O3
2.22ppb
SO2
2.80ppb
NO2
0.10ppm
CO
AQI 27
Good
4.87μg/m³
PM2.5
20.90μg/m³
PM10
20.06ppb
O3
2.46ppb
SO2
2.84ppb
NO2
0.12ppm
CO
AQI 22
Good
4.03μg/m³
PM2.5
17.57μg/m³
PM10
19.11ppb
O3
2.46ppb
SO2
2.84ppb
NO2
0.12ppm
CO
AQI 22
Good
3.58μg/m³
PM2.5
16.70μg/m³
PM10
19.84ppb
O3
2.92ppb
SO2
3.29ppb
NO2
0.10ppm
CO
Air quality data and pollutant measurements for Washington, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Ellensburg, Washington is updated every hour.
The worst air quality in Ellensburg, Washington in the last 24 hours was observed at 03:00:00 on 2026-06-08.
In the last 24 hrs, the best air quality in Ellensburg, Washington was observed at 01:00:00 on 2026-06-08.
The current air quality in Ellensburg, Washington is 19, categorized as Good based on real-time data.
The most common pollutant in Ellensburg, Washington is O3.
If the air quality in Ellensburg, Washington is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Ellensburg, Washington is 0.902 μg/m3.
The current PM10 concentration at Ellensburg, Washington is 4.007 μg/m3.
The current carbon monoxide (CO) concentration at Ellensburg, Washington is 0.1 ppm.
The current sulfur dioxide (SO2) concentration at Ellensburg, Washington is 0.433 ppb.
The current ozone (O3) concentration at Ellensburg, Washington is 19.941 ppm.
The current nitrogen dioxide (NO2) concentration at Ellensburg, Washington is 2.815 ppb.
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