San Luis Obispo, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
San Luis Obispo weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Foggy12%—71°57°—
- MondayJul 6Foggy——67°55°-4°
- TuesdayJul 7Foggy——81°55°+14°
- WednesdayJul 8Clear——92°60°+11°
- ThursdayJul 9Clear——98°65°+6°
- FridayJul 10Mostly Clear——93°64°-5°
- SaturdayJul 11Overcast——86°61°-7°
AQI 43 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 10.5 µg/m³ (AQI 54), ratio 0.68 with 10 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
PM × Wind × Precip
PM2.5 at 10.5 µg/m³ (AQI 54), ratio 0.68 with 10 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.68
- 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
- 11:20 PM
- Moonset
- 11:21 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
San Luis Obispo at a glance
- Today vs. normal: 8°F below the seasonal normal for this latitude
- Last frost: March 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 93401, 93405, 93407, 93408, 93409, 93410
16-Day Forecast — San Luis Obispo
- Sun71°57°12%
- Mon67°55°1%
- Tue81°55°0%
- Wed92°60°0%
- Thu98°65°0%
- Fri93°64°0%
- Sat86°61°1%
- Sun82°64°1%
- Mon101°70°5%
- Tue103°75°2%
- Wed97°73°1%
- Thu99°73°0%
- Fri100°68°0%
- Sat93°61°7%
- Sun94°61°5%
- Mon96°67°3%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near San Luis Obispo
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 San Luis Obispo
- 93401
- 93405
- 93403
- 93406