Worst air pollution Tacoma, today and tomorrow
Today (15 July): Air quality in Tacoma 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 Tacoma 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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Tacoma's air quality reflects its Puget Sound position on Commencement Bay, with the Port of Tacoma's container operations and the surrounding industrial zone — including the JBLM military base and the Puyallup River delta industrial corridor — contributing elevated PM2.5 and NOₓ. The open Sound provides maritime ventilation, but Tacoma has historically recorded higher industrial pollution than Seattle due to the Commencement Bay Superfund legacy and the ongoing port and rail freight concentration along the tideflats.
Today - 15 July | Pollution peaks at 06:00
AQI:
Medium
58.7/100
PM2.5 (fine particles):
Good
11.9/100
PM10 (coarse particles):
Good
4.1/100
NO2 (nitrogen dioxide):
Good
9.0/100
O3 (ozone):
Medium
58.7/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.6/100
PM1 (ultrafine particles):
Good
14.8/100
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
10.9/100
PM10 (coarse particles):
Good
3.8/100
NO2 (nitrogen dioxide):
Good
5.7/100
O3 (ozone):
Poor
60.6/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.9/100
PM1 (ultrafine particles):
Good
13.1/100
Pollen forecast in Tacoma
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Tacoma
Frequently Asked Questions
Is air quality bad in Tacoma right now?
On 15 July 2026, overall air quality in Tacoma 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 Tacoma?
On 16 July 2026, air quality conditions in Tacoma 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 Tacoma?
Air quality across Tacoma rises and falls with the seasons, as spring is often the freshest stretch, sandwiched between winter rain and summer fire season; by contrast, by late summer, wildfire smoke can override the region's usual clean-air advantage for days at a time. Coastal areas see relatively little of the smoke that can settle into inland valleys during fire season.
Are air quality levels in Tacoma 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