Eureka, California Weather
Fireweed Ignites. Day 15 of summer. Read this microseason across nine climate regions →
Eureka weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Foggy——64°53°—
- MondayJul 6Foggy——59°53°-5°
- TuesdayJul 7Foggy——68°52°+9°
- WednesdayJul 8Foggy——69°50°+1°
- ThursdayJul 9Foggy——67°53°-2°
- FridayJul 10Overcast——67°53°0°
- SaturdayJul 11Overcast——62°48°-5°
AQI 34 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.8 µg/m³ (AQI 52) with a 0.78 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 9.8 µg/m³ (AQI 52) with a 0.78 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.78
- Wind
- light
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:38 PM
- Moonset
- 11:35 AM
- In sign
- ♓︎ Pisces
Fireweed Ignites
Eureka at a glance
- Today vs. normal: 15°F below the seasonal normal for this latitude
- Last frost: April 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 95501, 95503
16-Day Forecast — Eureka
- Sun64°53°0%
- Mon59°53°1%
- Tue68°52°2%
- Wed69°50°3%
- Thu67°53°2%
- Fri67°53°3%
- Sat62°48°5%
- Sun70°48°2%
- Mon73°52°2%
- Tue74°56°1%
- Wed72°55°1%
- Thu72°54°3%
- Fri75°53°3%
- Sat75°54°3%
- Sun72°53°6%
- Mon70°52°5%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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.
ZIP codes in Eureka
- 95503
- 95501
- 95521
- 95502
- 95534