Santa Margarita, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Santa Margarita weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast16%—75°56°—
- MondayJul 6Mostly Clear——76°53°+1°
- TuesdayJul 7Clear——90°54°+14°
- WednesdayJul 8Clear——98°58°+8°
- ThursdayJul 9Clear——101°63°+3°
- FridayJul 10Clear——97°62°-4°
- SaturdayJul 11Overcast——94°64°-3°
AQI 42 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 10.7 µg/m³ (AQI 54) with a 0.68 fine-to-coarse ratio and 3 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 10.7 µg/m³ (AQI 54) with a 0.68 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.68
- Wind
- calm
- 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
- 11:20 PM
- Moonset
- 11:21 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Santa Margarita at a glance
- Today vs. normal: 3°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 code: 93453
16-Day Forecast — Santa Margarita
- Sun75°56°16%
- Mon76°53°0%
- Tue90°54°0%
- Wed98°58°0%
- Thu101°63°0%
- Fri97°62°0%
- Sat94°64°0%
- Sun96°65°1%
- Mon102°70°6%
- Tue94°69°2%
- Wed93°71°1%
- Thu101°75°0%
- Fri109°74°0%
- Sat118°77°7%
- Sun102°72°5%
- Mon99°67°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 Santa Margarita
- 93453