Unalaska, Alaska Weather
Mosquitoes rise from snowmelt. Day 76 of spring. Read this microseason across nine climate regions →
Unalaska weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast20%—61°41°—
- ThursdayJun 4Mostly Clear——61°48°0°
- FridayJun 5Mostly Clear20%—55°42°-6°
- SaturdayJun 6Overcast13%—55°40°0°
- SundayJun 7Clear——64°41°+9°
- MondayJun 8Partly Cloudy10%—58°43°-6°
- TuesdayJun 9Light Drizzle14%0.06″52°44°-6°
PM2.5/PM10 ratio 0.64 with 11 mph wind — characteristic of long-range haze transport rather than a local source. AQI up 5 over the last 6 hours (gradual rise).
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 34 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 11 by mid-afternoon.
- Present
- AQI 34
- UV peak
- 3.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 11
PM × Wind × Precip
PM2.5/PM10 ratio 0.64 with 11 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.64
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- transport
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
- 10:18 AM
- Moonset
- 5:08 PM
- In sign
- ♑︎ Capricorn
Mosquitoes rise from snowmelt
Unalaska at a glance
- Today vs. normal: 11°F below the seasonal normal for this latitude
- Last frost: July 8 (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.