Worst air pollution Ladd's Addition - Portland, today and tomorrow
Today (15 July): Air quality in Ladd's Addition 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 Ladd's Addition 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
Use our Strava plugin to check your own exposure.
Portland's Ladd's Addition air quality benefits from the historic planned neighbourhood's distinctive rose garden octagonal design, with the extensive rose gardens and tree-lined diagonal boulevards providing natural filtration. Vehicle traffic on the surrounding streets contributes modest local sources, while the neighbourhood's unique green design and the residential character maintain moderate Portland metropolitan readings and Ladd's Addition generally tracks at among Portland's more pleasant inner Southeast residential environments.
Today - 15 July | Pollution peaks at 07:00
AQI:
Medium
41.5/100
PM2.5 (fine particles):
Good
6.2/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
13.2/100
O3 (ozone):
Medium
41.5/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.5/100
PM1 (ultrafine particles):
Good
5.1/100
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
5.8/100
PM10 (coarse particles):
Good
2.2/100
NO2 (nitrogen dioxide):
Good
6.2/100
O3 (ozone):
Fair
36.7/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.0/100
PM1 (ultrafine particles):
Good
5.4/100
Other Landmarks in Portland
Frequently Asked Questions
Is air quality bad in Ladd's Addition right now?
On 15 July 2026, overall air quality in Ladd's Addition 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 Ladd's Addition?
On 16 July 2026, air quality conditions in Ladd's Addition 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 Ladd's Addition?
Seasonal changes shape air quality at Ladd's Addition much as they do across Portland, as spring is often the freshest stretch, sandwiched between winter rain and summer fire season; by contrast, the driest weeks of late summer bring the greatest risk of smoke drifting in from regional wildfires. Winter temperature inversions can briefly trap wood-smoke in low-lying valleys, but these episodes are usually short-lived.
Are air quality levels in Ladd's Addition 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
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