Raleigh Hills, Oregon Air Quality
Raleigh Hills has a median AQI of 36, earning an air quality grade of A — excellent air quality that ranks better than 79% of US cities. Air quality has remained relatively stable over the past decade. Ground-level ozone is the primary concern, typically peaking on warm sunny days due to vehicle and industrial emissions. In 2025, Raleigh Hills recorded 154 good air quality days (85% of monitored days).
Population: 6,744 • County: Washington
Current AQI
Quick Facts
| Current AQI | 16 — Good |
| Air Quality Grade | A |
| Median AQI (2025) | 36 |
| vs. U.S. Cities | Better than 79% |
| Primary Pollutant | Ozone |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | → Stable |
| Data Source | EPA AQS (historical) · AirNow (live) |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 90 Days
Current Pollutant Levels
Real-time data from EPA AirNow
Local Air Quality Context
Air quality data for Raleigh Hills is sourced from the Beaverton - Highland Park School monitoring area, located approximately 3 miles from city center. This EPA-certified station continuously tracks ground-level ozone, the primary driver of air quality alerts in this area.
Wildfire smoke is a significant factor in Raleigh Hills's air quality, with regional fires capable of pushing AQI from Good to Unhealthy within hours during fire season (typically July through October). On smoke-impacted days, staying indoors with windows closed and running an air purifier with a HEPA filter is the most effective protection.
AQI Trend (10 Years)
Air Quality Days by Year
Raleigh Hills Median AQI by Year
Annual EPA air quality data for Raleigh Hills — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2025 | 36 | 154 | — | 88 | Ozone |
| 2024 | 33 | 309 | 2 | 105 | Ozone |
| 2023 | 36 | 269 | 2 | 115 | PM2.5 |
| 2022 | 37 | 244 | 3 | 164 | PM2.5 |
| 2021 | 36 | 276 | — | 100 | PM2.5 |
| 2020 | 34 | 265 | 10 | 595 | PM2.5 |
| 2019 | 37 | 268 | 1 | 102 | PM2.5 |
| 2018 | 36 | 260 | 7 | 150 | PM2.5 |
| 2017 | 37 | 257 | 12 | 169 | PM2.5 |
| 2016 | 35 | 292 | — | 84 | PM2.5 |
Source: EPA Air Quality System (AQS) annual summaries. "Unhealthy Days" includes Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, and Hazardous categories.
2025 Air Quality Summary
Primary Pollutant Days (2025)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Raleigh Hills Air Quality
What is the air quality in Raleigh Hills today?
The current AQI in Raleigh Hills is 16, rated "Good". Air quality is good — outdoor activity is safe for everyone today. Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Raleigh Hills getting better or worse?
Air quality in Raleigh Hills has been stable. The median AQI has risen 1 points (from 35 in 2016 to 36 in 2025).
What is the most common air pollutant in Raleigh Hills?
Ozone is the primary air pollutant in Raleigh Hills, responsible for 108 days (59% of monitored days) in 2025. Ground-level ozone forms when sunlight reacts with emissions from vehicles and industry, typically peaking on hot summer afternoons.
How many unhealthy air days does Raleigh Hills have per year?
In 2025, Raleigh Hills recorded 85% good air quality days (154 days) out of 182 monitored days. There were 0 Unhealthy for Sensitive Groups days and 0 Unhealthy days (AQI above 100). The highest single-day AQI recorded was 88.
What air quality grade does Raleigh Hills receive?
Raleigh Hills receives an air quality grade of A, placing it better than 79% of US cities. This is based on a median AQI of 36 in 2025, with 154 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 79% of US cities
Nearby Cities
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National Rankings
See how Raleigh Hills compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Raleigh Hills
Ozone is Raleigh Hills's primary pollutant. Standard HEPA filters don't capture ozone molecules — you need activated carbon or PECO technology to chemically break them down. We highlight those units here.
Blueair Blue Pure 211+
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Other Great Options
Molekule Air Pro
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Honeywell HPA300
Powerful workhorse for large rooms. Built to last.
RabbitAir MinusA2
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