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Air Quality in Portland, United States

Updated 2026-05-27T08:00:00-07:00 · Station: Portland, Oregon, USA
19
Good
Dominant pollutant: PM2.5
0 Good100200300+ Hazardous
Air quality is satisfactory; little or no risk.

The AQI in Portland is currently 19Good. Air quality is satisfactory; little or no risk.

Pollutants & Conditions

MeasurementValue
PM2.519
Ozone (O₃)0.1
NO₂3.8
SO₂1.5
CO0.1
Temperature (°C)14.1
Humidity (%)82.5
Pressure (hPa)1012.6

Forecast (next 7 days)

Pollutant Mon, May 25Tue, May 26Wed, May 27Thu, May 28Fri, May 29Sat, May 30Sun, May 31Mon, Jun 1
PM2.5 12
11–15
14
11–17
27
13–43
22
12–41
11
10–12
8
6–10
12
6–20
20
14–53
PM10 5
4–6
5
5–6
11
5–14
10
6–15
6
5–7
4
3–5
5
3–8
8
5–17
UV Index 0
0–1
1
0–6
1
0–6
0
0–3
1
0–6
2
0–7

Values shown are daily average AQI. Range = min–max. Data from WAQI forecast model.

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