Air Quality Alert: Unhealthy Conditions Reported in Portland, OR
On March 1, 2026, air quality in Portland, OR reached Unhealthy levels with a PM2.5 AQI of 152, according to EPA data.
Current Air Quality
In Portland, OR, the air quality has reached the “Unhealthy” category as of March 1, 2026. The primary pollutant of concern is fine particulate matter (PM2.5), which recorded an Air Quality Index (AQI) value of 152. Ozone (O3) levels remain in the “Good” category with an AQI of 20.
What This Means
An AQI of 152 falls into the “Unhealthy” category. At this level, everyone may begin to experience health effects, and members of sensitive groups may experience more serious health effects.
Who Should Take Precautions
While the general public may be affected, sensitive groups are at the highest risk. This includes people with heart or lung disease, older adults, children, and teenagers.
What You Should Do
For the general population: Reduce prolonged or heavy exertion. Take more breaks and do less intense activities.
For sensitive groups: Avoid prolonged or heavy exertion. Consider moving activities indoors or rescheduling them to a time when air quality is better.
Source
Data provided by EPA AirNow.
Source: EPA Official Notice