Hermiston, Oregon Weather
Pikas hayfeeding in granite peaks. Day 76 of spring. Read this microseason across nine climate regions →
Hermiston weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast19%—83°54°—
- ThursdayJun 4Mostly Clear——79°56°-4°
- FridayJun 5Overcast——75°57°-4°
- SaturdayJun 6Overcast——70°54°-5°
- SundayJun 7Overcast——74°50°+4°
- MondayJun 8Overcast16%—63°51°-11°
- TuesdayJun 9Overcast22%—75°49°+12°
Ozone at AQI 55. AQI up 5 over the last 6 hours (gradual rise). Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 55. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 55
- UV peak
- 6.5 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 24
PM × Wind × Precip
PM2.5 at 5.3 µg/m³ (AQI 29) with a 0.84 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.84
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
The higher the clouds, the finer the weather.
- Moonrise
- 6:17 AM
- Moonset
- 2:37 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Hermiston at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: May 21 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Warm-season window is open
As of June 3, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.