Stay updated with real-time air quality in Lacey, 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)
26
Good
Lacey, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.12 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.08 μg/m³
0
55
155
255
425
605+
27.86 ppb
0
55
71
86
201
201+
0.42 ppb
0
36
76
186
605
1005+
2.32 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Lacey, Washington
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AQI 25
Good
3.17μg/m³
PM2.5
14.31μg/m³
PM10
27.50ppb
O3
0.42ppb
SO2
2.29ppb
NO2
0.15ppm
CO
AQI 25
Good
3.18μg/m³
PM2.5
14.34μg/m³
PM10
27.45ppb
O3
0.42ppb
SO2
2.29ppb
NO2
0.15ppm
CO
AQI 25
Good
4.04μg/m³
PM2.5
23.11μg/m³
PM10
27.17ppb
O3
0.43ppb
SO2
2.53ppb
NO2
0.14ppm
CO
AQI 25
Good
3.66μg/m³
PM2.5
14.83μg/m³
PM10
27.23ppb
O3
0.42ppb
SO2
2.28ppb
NO2
0.15ppm
CO
AQI 22
Good
3.95μg/m³
PM2.5
17.68μg/m³
PM10
20.73ppb
O3
0.44ppb
SO2
2.57ppb
NO2
0.13ppm
CO
AQI 25
Good
3.30μg/m³
PM2.5
15.00μg/m³
PM10
27.21ppb
O3
0.42ppb
SO2
2.10ppb
NO2
0.16ppm
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 Lacey, Washington is updated every hour.
The worst air quality in Lacey, Washington in the last 24 hours was observed at 11:00:00 on 2026-09-06.
In the last 24 hrs, the best air quality in Lacey, Washington was observed at 10:00:00 on 2026-09-07.
The current air quality in Lacey, Washington is 26, categorized as Good based on real-time data.
The most common pollutant in Lacey, Washington is O3.
If the air quality in Lacey, Washington is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Lacey, Washington is 3.119 μg/m3.
The current PM10 concentration at Lacey, Washington is 14.081 μg/m3.
The current carbon monoxide (CO) concentration at Lacey, Washington is 0.153 ppm.
The current sulfur dioxide (SO2) concentration at Lacey, Washington is 0.425 ppb.
The current ozone (O3) concentration at Lacey, Washington is 27.855 ppm.
The current nitrogen dioxide (NO2) concentration at Lacey, Washington is 2.324 ppb.
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