Worst air pollution Willamette Waterfront - Portland, today and tomorrow
Today (15 July): Air quality in Willamette Waterfront is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 41.5/100).
Tomorrow (16 July 2026): Air quality in Willamette Waterfront is fair. AQI worsens to fair; NO2 decreases to good; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 AM (O3: 36.7/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Portland's Willamette Waterfront and the Tom McCall Waterfront Park record good air quality along the river, with consistent Willamette River breezes providing ventilation and the park's open geometry aiding dispersal of downtown emissions. The river corridor is one of Portland's more reliable clean-air locations on days with any appreciable wind.
Today - 15 July | Pollution peaks at 07:00
AQI:
Medium
41.5/100
PM2.5 (fine particles):
Good
7.0/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Fair
20.8/100
O3 (ozone):
Medium
41.5/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.5/100
PM1 (ultrafine particles):
Good
5.8/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 04:00
AQI:
Fair
36.7/100
PM2.5 (fine particles):
Good
6.5/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Good
9.9/100
O3 (ozone):
Fair
36.7/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.0/100
PM1 (ultrafine particles):
Good
6.1/100
Other Landmarks in Portland
Frequently Asked Questions
Is air quality bad in Willamette Waterfront right now?
On 15 July 2026, overall air quality in Willamette Waterfront is fair. NO2 is the main pollutant at 20.8/100. Pollution peaks around 7:00 AM (O3: 41.5/100).
Will air quality be worse tomorrow in Willamette Waterfront?
On 16 July 2026, air quality conditions in Willamette Waterfront will be similar to today, with AQI forecast at fair at 36.7/100. Pollution peaks around 4:00 AM (O3: 36.7/100).
When is air pollution at its worst in Willamette Waterfront?
Conditions at Willamette Waterfront vary noticeably across the seasons: winter and spring bring the cleanest air, as frequent rain and consistent onshore wind clear pollution quickly, but August and September wildfire smoke can dominate the season, occasionally driving particulate levels sharply higher for several days. Winter temperature inversions can briefly trap wood-smoke in low-lying valleys, but these episodes are usually short-lived.
Are air quality levels in Willamette Waterfront 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