Old Harbor, Alaska Weather
Mosquitoes rise from snowmelt. Day 76 of spring. Read this microseason across nine climate regions →
Old Harbor weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——56°44°—
- ThursdayJun 4Overcast——64°43°+8°
- FridayJun 5Overcast——60°44°-4°
- SaturdayJun 6Drizzle81%0.01″51°39°-9°
- SundayJun 7Light Drizzle58%0.08″47°38°-4°
- MondayJun 8Overcast39%—54°37°+7°
- TuesdayJun 9Overcast10%—59°36°+5°
PM2.5/PM10 ratio 0.63 with 9 mph wind — characteristic of long-range haze transport rather than a local source. AQI flat over the last 6 hours (within ±3 points).
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 41. Overcast through the UV peak window (cloud cover ~84%) — afternoon ozone should stay flat.
- Present
- AQI 41
- UV peak
- 4.5 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 12
PM × Wind × Precip
PM2.5/PM10 ratio 0.63 with 9 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.63
- Wind
- light
- 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
- 9:53 AM
- Moonset
- 3:44 PM
- In sign
- ♑︎ Capricorn
Mosquitoes rise from snowmelt
Old Harbor at a glance
- Today vs. normal: 3°F below the seasonal normal for this latitude
- Last frost: July 28 (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.