Salem, OR Air Quality
Report & Trends
Analysis & History
The Verdict
Compared to other metro areas, Salem, OR scores exceptionally well.
You are most likely to need an air purifier in July, when historical averages peak.
Health Recommendation
Sensitive groups should consider monitoring daily forecast apps significantly closer.
10-Year Annual PM2.5 Average
Analysis: Annual average Median AQI from 2015 to 2025.
Compared to national averages, Salem, OR has a unique air quality profile driven by seasonal changes. Despite seasonal fluctuations, year-over-year averages have plateaued.
Seasonal Risk Calendar
The "Smoke Season" Calendar
Values represent historical Average Monthly AQI (PM2.5). Higher is worse.
Calculate Your Wildfire Defense
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Coway AP-1512HH
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Wildfire smoke is 2.5 microns wide—too small for normal filters. Using an undersized purifier is dangerous false security.
Common Questions
When is the worst time for air quality in Salem, OR?
Based on 10 years of data, the worst months for air quality in Salem, OR are: July (AQI 49.5), August (AQI 42.9), November (AQI 42.4). These months typically see the highest concentrations of PM2.5 due to smoke from fires hundreds of miles away.
Is it safe to move to Salem, OR given the air quality?
Absolutely. Salem, OR has some of the cleanest air in the country. While no place is immune to occasional regional smoke, the long-term data shows it is a safe and healthy environment for residents.
How is the air quality changing in Salem, OR?
It is holding steady. While some seasons see short-term spikes, the long-term annual average for Salem, OR has remained consistent over the last decade, avoiding the sharp declines seen in other parts of the region.
Do I really need an air purifier in Salem, OR?
For daily use, likely not. Salem, OR's air quality consistently rates as "Good." However, owning one as a precaution for wildfire season or allergy relief is still a smart decision for sensitive groups.
How accurate is this data?
This report is built on official EPA Air Quality System (AQS) data. We aggregated daily summary files from 2014 to present to build these charts. Unlike real-time apps that estimate, this is the verified historical record.
Is Salem, OR safe from other disasters?
Air quality is just one factor. Check our sister site for a complete analysis of tornado, hurricane, and flood risks.
Full Safety Report →Summary
As the climate shifts, so does our definition of "Good" air. Salem, OR is on the front lines of this change.