What is the air quality in Hermiston today?

The current Air Quality Index (AQI) in Hermiston is 20 (Good). PM2.5 concentration is 4.8 µg/m³.

What is the temperature in Hermiston right now?

The current temperature in Hermiston is 27.6°C (feels like 27.6°C). Humidity is 22.3% and wind speed is 29.3 km/h.

Is it safe to go outside in Hermiston?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 1.4 (Low).

Air Quality in Hermiston, United States

Clear

27.6°C · 22.3% humidity

27.6°

Feels 27.6°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

25 5am

20 8am

23 11am

24 2pm

25 5pm

27 8pm

25 11pm

25 2am

Air Quality Index Trend

45h · 7 stn

View full history →

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

22.3%

Humidity

29.3 km/h

Wind NNE

1017.4 hPa

Pressure

1.4

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

4.8 µg/m³

PM10▲

27.45 µg/m³

050100150200300500

What is the weather forecast for Hermiston?

Temperature & Precipitation

PM2.5 Trend

45h · 7 stations

PM2.54.8 µg/m³ ✓ WHO

Good

PM1027.45 µg/m³

Good

UV INDEX1.4

Low

Station readings (1 station within 25 km)

4.8

Median

4.8

Average

4.8

Low

4.8

High

PM2.5 µg/m³ · Model: 6.25 · Bias: +1.5

What is the 7-day forecast for Hermiston?

09-05

28.8° 13.2°

09-06

27.4° 17.8°

09-07

28.5° 8.5°

0.06 mm

09-08

32.1° 13.3°

09-09

32.9° 13.8°

09-10

39.7° 14.6°

09-11

34.0° 16.0°

Both models agree Avg diff: 4.7°C

Where are air quality stations near Hermiston?

Hermiston, Oregon, USA

2.4 km PM2.5: 4.8 µg/m³

Hermiston Municipal Airport, Oregon, USA

2.4 km PM2.5: 5.5 µg/m³

What cities are near Hermiston?

21 Kennewick 18 Pendleton 20 Tri-Cities 27 Pasco 20 Richland 28 Sunnyside 20 Walla Walla 17 Yakima 14 Moses Lake 17 The Dalles

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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 2026-09-05T15:50 UTC.