Cayucos, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Cayucos weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Foggy16%—66°57°—
- MondayJul 6Foggy——66°55°0°
- TuesdayJul 7Foggy——69°55°+3°
- WednesdayJul 8Clear——75°58°+6°
- ThursdayJul 9Foggy——80°61°+5°
- FridayJul 10Clear——72°58°-8°
- SaturdayJul 11Foggy——69°59°-3°
AQI 42 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.8 µg/m³ (AQI 52), ratio 0.67 with 12 mph wind — characteristic of long-range haze transport rather than a local source.
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 31 now. With UV 9.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 40 around 1 PM.
- Present
- AQI 31
- UV peak
- 9.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 40
PM × Wind × Precip
PM2.5 at 9.8 µg/m³ (AQI 52), ratio 0.67 with 12 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.67
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:21 PM
- Moonset
- 11:22 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Cayucos at a glance
- Today vs. normal: 12°F below the seasonal normal for this latitude
- Last frost: March 20 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 93430
16-Day Forecast — Cayucos
- Sun66°57°16%
- Mon66°55°1%
- Tue69°55°0%
- Wed75°58°0%
- Thu80°61°0%
- Fri72°58°0%
- Sat69°59°2%
- Sun70°62°2%
- Mon82°65°6%
- Tue85°65°2%
- Wed75°62°1%
- Thu76°62°3%
- Fri76°60°3%
- Sat73°58°3%
- Sun73°58°0%
- Mon77°62°3%
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 Cayucos
- 93442
- 93430