Jefferson, Oregon Weather
Rufous Hummingbirds Arrive. Day 76 of spring. Read this microseason across nine climate regions →
Jefferson weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast17%—73°54°—
- ThursdayJun 4Overcast——69°46°-4°
- FridayJun 5Overcast——63°41°-6°
- SaturdayJun 6Drizzle31%—64°44°+1°
- SundayJun 7Overcast——69°39°+5°
- MondayJun 8Light Drizzle38%0.08″55°47°-14°
- TuesdayJun 9Overcast33%—64°48°+9°
PM2.5 at 7.9 µg/m³ (AQI 44) with a 0.61 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust. AQI up 6 over the last 6 hours (gradual rise).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 40 now. With UV 5.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 20 by mid-afternoon.
- Present
- AQI 40
- UV peak
- 5.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 20
PM × Wind × Precip
PM2.5 at 7.9 µg/m³ (AQI 44) with a 0.61 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.61
- 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
- 6:27 AM
- Moonset
- 2:58 PM
- In sign
- ♑︎ Capricorn
Rufous Hummingbirds Arrive
Jefferson at a glance
- Today vs. normal: 69°F — typical for the season
- Last frost: May 14 (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
Peak growing season
As of June 3, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.