Air Quality in Portland, United States

Windy
27.3°C · 81.7% humidity
27.3°
Feels 33.0°
53
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
3 stations

Nearby Monitoring Stations

AQI Forecast
34 8pm
34
34
53 11pm
48
44
41 2am
39
38
37 5am
36
35
28 8am
28
27
27 11am
27
27
27 2pm
27
27
27 5pm
27
25
AD 728×90

Air Quality Index Trend

47h · 1 stn

Portland's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

81.7%
Humidity
65.5 km/h
Wind SSE
1012.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
53
13.11 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Portland?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.513.11 µg/m³ ✓ WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (3 stations within 25 km)
13.11
Median
12.87
Average
11.8
Low
15.0
High
PM2.5 µg/m³ · Model: 7.35 · Bias: -5.8

What is the 7-day forecast for Portland?

06-09
31.8° 24.6°
0.06 mm
06-10
31.9° 26.9°
0.13 mm
06-11
30.9° 25.9°
06-12
31.7° 26.7°
0.31 mm
06-13
31.5° 26.5°
0.06 mm
06-14
31.4° 24.7°
0.06 mm
06-15
33.0° 26.7°
0.19 mm
Both models agree Avg diff: 1.3°C

Where are air quality stations near Portland?

57
Corpus Christi Huisache
13.3 km PM2.5: 15.0 µg/m³
9
Dona Park, Corpus Christi, Texas
15.7 km PM2.5: 2.2 µg/m³
30
Dona Park, Corpus Christi, Texas
15.7 km PM2.5: 7.2 µg/m³

What cities are near Portland?

55 Corpus Christi 41 Kingsville 41 Alice 27 Victoria 28 Bay City 44 Harlingen 55 Edinburg 45 San Benito 35 Seguin 43 Mercedes
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T04:46 UTC.