South Pasadena, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
South Pasadena weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——86°61°—
- MondayJul 6Overcast——86°59°0°
- TuesdayJul 7Mostly Clear——91°61°+5°
- WednesdayJul 8Clear——94°75°+3°
- ThursdayJul 9Clear——96°78°+2°
- FridayJul 10Overcast——93°76°-3°
- SaturdayJul 11Overcast——89°75°-4°
AQI 61 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 18.9 µg/m³ (AQI 69) with a 0.82 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 18.9 µg/m³ (AQI 69) with a 0.82 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.82
- 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
- 11:09 PM
- Moonset
- 11:11 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
South Pasadena at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: March 12 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 91030
16-Day Forecast — South Pasadena
- Sun86°61°1%
- Mon86°59°0%
- Tue91°61°0%
- Wed94°75°0%
- Thu96°78°0%
- Fri93°76°0%
- Sat89°75°0%
- Sun90°72°1%
- Mon99°76°6%
- Tue101°83°9%
- Wed98°82°3%
- Thu102°84°10%
- Fri103°87°10%
- Sat100°83°10%
- Sun101°84°19%
- Mon101°82°19%
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 South Pasadena
- 91030
- 91031