Portland, OR Air Quality in 2022
In 2022, Portland's air quality (Portland-Vancouver-Hillsboro, OR-WA area) had a median daily AQI of 41 (Good) across 365 monitored days. 7 days (1.9%) reached Unhealthy for Sensitive Groups or worse, 225 were Good, and the year's peak AQI was 175 (Unhealthy). Fine particulate matter (PM2.5) set the daily AQI on 197 of those days. The cleanest month of 2022 was June (median AQI 31, 0 days above 100) and the worst was October (median 63, 4 days above 100, peak 175).
- Good: 61.6%
- Moderate: 36.4%
- Unhealthy for Sensitive Groups: 0.8%
- Unhealthy or worse: 1.1%
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How was Portland's air quality in 2022?
Good on a typical day: median AQI 41, with 7 days above AQI 100 out of 365 monitored — the 6th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2022: 175 (Unhealthy).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 197 days.
- ✓Cleanest month: June; worst: October.
Frequently asked questions
What was the average AQI in Portland in 2022?▾
EPA's Air Quality System puts Portland's (Portland-Vancouver-Hillsboro, OR-WA) median daily AQI for 2022 at 41, which is Good. 7 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 175.
Which month had the worst air quality in Portland in 2022?▾
The cleanest month of 2022 was June (median AQI 31, 0 days above 100) and the worst was October (median 63, 4 days above 100, peak 175).
Was 2022 a good or bad year for Portland's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 6th cleanest by days above AQI 100. 2022's median of 41 is in line with the area's typical annual median of 41.
Portland month by month in 2022
Portland air quality month by month, 2022 (Portland-Vancouver-Hillsboro, OR-WA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 54 | 0 | 77 | PM2.5 |
| February | 28 | 50 | 0 | 76 | PM2.5 |
| March | 31 | 37 | 0 | 73 | PM2.5 |
| April | 30 | 37 | 0 | 54 | O3 |
| May | 31 | 36 | 0 | 45 | O3 |
| Junecleanest | 30 | 31 | 0 | 55 | O3 |
| July | 31 | 40 | 1 | 133 | O3 |
| August | 31 | 41 | 1 | 101 | O3 |
| September | 30 | 43 | 0 | 97 | PM2.5 |
| Octoberworst | 31 | 63 | 4 | 175 | PM2.5 |
| November | 30 | 62 | 1 | 108 | PM2.5 |
| December | 31 | 48 | 0 | 86 | PM2.5 |
How 2022 compares
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 6th cleanest by days above AQI 100.
2022's median of 41 is in line with the area's typical annual median of 41.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Portland
The latest EPA AirNow observation puts Portland's AQI at 39 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Portland air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Portland-Vancouver-Hillsboro, OR-WA), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.