What is the air quality in Hermiston today?

The current Air Quality Index (AQI) in Hermiston is 21 (Good). PM2.5 concentration is 5.12 µg/m³.

What is the temperature in Hermiston right now?

The current temperature in Hermiston is 24.2°C (feels like 24.2°C). Humidity is 29.7% and wind speed is 56.1 km/h.

Is it safe to go outside in Hermiston?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 14.9 (Extreme).

Air Quality in Hermiston, United States

Windy

24.2°C · 29.7% humidity

24.2°

Feels 24.2°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

25 11am

21 2pm

24 5pm

24 8pm

27 11pm

27 2am

27 5am

25 8am

Air Quality Index Trend

48h · 5 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.

29.7%

Humidity

56.1 km/h

Wind N

1009.9 hPa

Pressure

14.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.12 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Hermiston?

Temperature & Precipitation

PM2.5 Trend

48h · 5 stations

PM2.55.12 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX14.9

Extreme

What is the 7-day forecast for Hermiston?

05-29

32.2° 10.7°

0.38 mm

05-30

24.2° 13.7°

05-31

35.9° 17.0°

06-01

27.5° 8.2°

06-02

33.1° 11.9°

06-03

27.1° 6.2°

06-04

26.4° 9.6°

4.5 mm

Both models agree Avg diff: 5.5°C

Where are air quality stations near Hermiston?

Hermiston Municipal Airport, Oregon, USA

2.4 km PM2.5: 3.6 µg/m³

What cities are near Hermiston?

54 Kennewick 24 Pendleton 64 Tri-Cities 38 Pasco 46 Richland 25 Sunnyside 12 Walla Walla 18 Yakima 67 Moses Lake 25 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 2026-05-29T21:10 UTC.