Stay updated with real-time air quality in Yelm, 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)
16
Good
Yelm, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.79 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.42 μg/m³
0
55
155
255
425
605+
17.13 ppb
0
55
71
86
201
201+
0.17 ppb
0
36
76
186
605
1005+
3.09 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Yelm, Washington
Yelm, Washington
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AQI 19
Good
2.49μg/m³
PM2.5
8.97μg/m³
PM10
20.61ppb
O3
0.14ppb
SO2
2.70ppb
NO2
0.12ppm
CO
AQI 19
Good
0.64μg/m³
PM2.5
2.16μg/m³
PM10
20.02ppb
O3
0.14ppb
SO2
2.73ppb
NO2
0.12ppm
CO
AQI 19
Good
2.73μg/m³
PM2.5
12.12μg/m³
PM10
21.07ppb
O3
0.14ppb
SO2
2.75ppb
NO2
0.12ppm
CO
AQI 19
Good
2.30μg/m³
PM2.5
8.11μg/m³
PM10
20.42ppb
O3
0.13ppb
SO2
2.54ppb
NO2
0.11ppm
CO
AQI 19
Good
0.92μg/m³
PM2.5
3.30μg/m³
PM10
20.07ppb
O3
0.14ppb
SO2
2.73ppb
NO2
0.12ppm
CO
AQI 19
Good
0.90μg/m³
PM2.5
3.24μg/m³
PM10
20.09ppb
O3
0.14ppb
SO2
2.71ppb
NO2
0.12ppm
CO
Air quality and pollutant data for Washington, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Yelm, Washington is updated every hour for accuracy.
In the past 24 hours, the air quality in Yelm, Washington was at its worst at 03:00:00 on 2026-07-10.
In the last 24 hours, the best air quality in Yelm, Washington was observed at 10:00:00 on 2026-07-10.
As of now, the AQI in Yelm, Washington is 19, indicating Good conditions.
Yelm, Washington air has the highest levels of O3.
Poor air quality in Yelm, Washington means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Yelm, Washington are currently 2.573 μg/m3.
The PM10 concentration in Yelm, Washington is 9.029 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Yelm, Washington is 0.119 ppm.
Currently, Yelm, Washington has a sulfur dioxide (SO2) concentration of 0.141 ppb.
The current ozone (O3) level in Yelm, Washington at the moment is 20.405 ppm.
Nitrogen dioxide (NO2) level in Yelm, Washington at the moment is 3.021 ppb.
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