Worst air pollution Lacey, today and tomorrow
Today (15 July): Air quality in Lacey is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (O3: 58.7/100).
Tomorrow (16 July 2026): Air quality in Lacey is poor. AQI worsens to poor; O3 increases to poor; all other pollutants stay as today. Pollution peaks around 4:00 AM (O3: 60.6/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Lacey's air quality reflects the South Puget Sound position in Thurston County Washington adjacent to Olympia, with vehicle emissions from I-5 and the surrounding government and commercial corridor contributing local sources. The Sound provides maritime ventilation, while summer wildfire smoke from Washington and Oregon forests is an increasingly severe seasonal concern and consistent Pacific maritime airflows from Puget Sound generally provide reasonable ventilation across this western Washington state capital suburban community throughout the year.
Today - 15 July | Pollution peaks at 06:00
AQI:
Medium
58.7/100
PM2.5 (fine particles):
Good
11.5/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
6.5/100
O3 (ozone):
Medium
58.7/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.6/100
PM1 (ultrafine particles):
Good
14.3/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 04:00
AQI:
Poor
60.6/100
PM2.5 (fine particles):
Good
10.5/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
4.1/100
O3 (ozone):
Poor
60.6/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.9/100
PM1 (ultrafine particles):
Good
12.7/100
Pollen forecast in Lacey
View pollen forecastFrequently Asked Questions
Is air quality bad in Lacey right now?
On 15 July 2026, overall air quality in Lacey is medium. AQI is the main air quality indicator at 58.7/100. Pollution peaks around 6:00 AM (O3: 58.7/100).
Will air quality be worse tomorrow in Lacey?
On 16 July 2026, air quality conditions in Lacey will be worse than today, with AQI forecast at poor at 60.6/100. Pollution peaks around 4:00 AM (O3: 60.6/100).
When is air pollution at its worst in Lacey?
Air quality across Lacey rises and falls with the seasons. In short, the wet winter and spring months are generally the cleanest, with regular rain limiting particulate buildup, whereas the driest weeks of late summer bring the greatest risk of smoke drifting in from regional wildfires. Prevailing onshore winds usually keep pollution moving rather than letting it settle.
Are air quality levels in Lacey based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app