Worst air pollution Slabtown - Portland, today and tomorrow
Today (15 July): Air quality in Slabtown is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 41.5/100).
Tomorrow (16 July 2026): Air quality in Slabtown is fair. AQI worsens to fair; 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.
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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Portland's Slabtown air quality reflects the Northwest Portland Pearl District-adjacent neighbourhood, with vehicle traffic on NW 23rd Avenue and the surrounding mixed residential and commercial character contributing local sources. Summer wildfire smoke is the primary seasonal concern, while the walkable character and the surrounding residential density maintain moderate Portland metropolitan readings and the neighbourhood generally tracks at typical Northwest Portland inner urban levels throughout most of the year.
Today - 15 July | Pollution peaks at 07:00
AQI:
Medium
41.5/100
PM2.5 (fine particles):
Good
6.4/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Good
14.4/100
O3 (ozone):
Medium
41.5/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.5/100
PM1 (ultrafine particles):
Good
5.2/100
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
5.9/100
PM10 (coarse particles):
Good
2.3/100
NO2 (nitrogen dioxide):
Good
6.7/100
O3 (ozone):
Fair
36.7/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.0/100
PM1 (ultrafine particles):
Good
5.5/100
Other Landmarks in Portland
Frequently Asked Questions
Is air quality bad in Slabtown right now?
On 15 July 2026, overall air quality in Slabtown is medium. AQI is the main air quality indicator at 41.5/100. Pollution peaks around 7:00 AM (O3: 41.5/100).
Will air quality be worse tomorrow in Slabtown?
On 16 July 2026, air quality conditions in Slabtown will be worse than 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 Slabtown?
Like the rest of Portland, Slabtown sees air quality change through the year, as spring is often the freshest stretch, sandwiched between winter rain and summer fire season; by contrast, 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 Slabtown 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