Juneau, Alaska Weather
Mosquitoes rise from snowmelt. Day 77 of spring. Read this microseason across nine climate regions →
Juneau weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——53°44°—
- ThursdayJun 4Heavy Drizzle100%0.53″43°36°-10°
- FridayJun 5Heavy Drizzle100%0.34″40°36°-3°
- SaturdayJun 6Light Drizzle96%0.21″41°37°+1°
- SundayJun 7Light Drizzle87%0.03″42°38°+1°
- MondayJun 8Light Drizzle59%0.03″43°38°+1°
- TuesdayJun 9Partly Cloudy53%—43°35°0°
PM scrubbed by 3 hours of recent rain — PM2.5 down to 9.0 µg/m³, PM10 to 14.8 µg/m³. AQI down 7 over the last 6 hours (steady decline since this morning).
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 40. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 40
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
PM × Wind × Precip
PM scrubbed by 3 hours of recent rain — PM2.5 down to 9.0 µg/m³, PM10 to 14.8 µg/m³.
- PM2.5/PM10
- 0.61
- Wind
- calm
- Recent rain
- 3h in last 6h
- Pattern
- washed out
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 9:03 AM
- Moonset
- 3:37 PM
- In sign
- ♑︎ Capricorn
Mosquitoes rise from snowmelt
Juneau at a glance
- Today vs. normal: 14°F below the seasonal normal for this latitude
- Last frost: August 5 (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 4, 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.