Air Quality Alert: Unhealthy Conditions Reported in Portland, OR
Areazine synthesizes this EPA air-quality advisory directly from EPA's official public data feed. See our methodology for full source attribution and refresh cadence.
On March 1, 2026, air quality in Portland, OR reached Unhealthy levels with a PM2.5 AQI of 152, according to EPA data.
What this EPA air-quality advisory tells you, and what most readers miss
This notice was issued by EPA on April 6, 2026 and geographically references Portland, OR. Its severity classification of "medium" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Air Quality - determines the informational context it sits in, and which agency or body is the authoritative source for updates.
Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to verify its scope, source, and timestamp, then compare related notices without assuming that one record proves a broader trend.
Areazine pairs this record with the original agency URL so you can check the primary source before acting. Its related labels are air-quality, epa, aqi, Portland.
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.
Original source: EPA Official Notice ↗
Related Air Quality
All Air Quality →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this EPA air-quality advisory: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,053 characters here).
Similar severity timing
Same severity (medium) notices issued closest in time to April 6, 2026.
Frequently Asked Questions
Common questions about this EPA air-quality advisory.