What is the air quality in Hermiston today?

The current Air Quality Index (AQI) in Hermiston is 22 (Good). PM2.5 concentration is 5.3 µg/m³.

What is the temperature in Hermiston right now?

The current temperature in Hermiston is 19.3°C (feels like 19.3°C). Humidity is 22.0% and wind speed is 19.8 km/h.

Is it safe to go outside in Hermiston?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Hermiston, United States

Clear

19.3°C · 22.0% humidity

19.3°

Feels 19.3°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

46h · 8 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.

22.0%

Humidity

19.8 km/h

Wind SW

1019.0 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

5.3 µg/m³

PM10▲

104.9 µg/m³

050100150200300500

What is the weather forecast for Hermiston?

Temperature & Precipitation

PM2.5 Trend

46h · 8 stations

PM2.55.3 µg/m³ ✓ WHO

Good

PM10104.9 µg/m³

Moderate

UV INDEX0.0

Low

Station readings (1 station within 25 km)

5.3

Median

5.3

Average

5.3

Low

5.3

High

PM2.5 µg/m³ · Model: 13.5 · Bias: +8.2

What is the 7-day forecast for Hermiston?

10-20

19.3° 12.2°

10-21

18.4° 9.2°

10-22

20.8° 4.9°

10-23

19.6° 8.0°

10-24

16.0° 8.2°

0.06 mm

10-25

14.8° 6.8°

10-26

13.7° 12.2°

Both models agree Avg diff: 4.8°C

Where are air quality stations near Hermiston?

Hermiston Municipal Airport, Oregon, USA

2.4 km PM2.5: 6.7 µg/m³

Hermiston Municipal Airport, Oregon, USA

2.4 km PM2.5: 7.0 µg/m³

Hermiston, Oregon, USA

2.4 km PM2.5: 7.0 µg/m³

Hermiston, Oregon, USA

2.4 km PM2.5: 3.6 µg/m³

Hermiston, Oregon, USA

2.4 km PM2.5: 10.8 µg/m³

What cities are near Hermiston?

34 Kennewick 25 Pendleton 33 Tri-Cities 40 Pasco 32 Richland 36 Sunnyside 29 Walla Walla 52 Yakima 19 Moses Lake 21 The Dalles

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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 2026-10-20T19:59 UTC.