California Polytechnic State University, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
California Polytechnic State University weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Foggy14%—70°56°—
- MondayJul 6Foggy——67°54°-3°
- TuesdayJul 7Foggy——81°54°+14°
- WednesdayJul 8Clear——91°60°+10°
- ThursdayJul 9Clear——97°64°+6°
- FridayJul 10Mostly Clear——92°63°-5°
- SaturdayJul 11Overcast——85°61°-7°
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), ratio 0.68 with 8 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 10.7 µg/m³ (AQI 54), ratio 0.68 with 8 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.68
- Wind
- light
- 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
California Polytechnic State University at a glance
- Today vs. normal: 9°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.
16-Day Forecast — California Polytechnic State University
- Sun70°56°14%
- Mon67°54°1%
- Tue81°54°0%
- Wed91°60°0%
- Thu97°64°0%
- Fri92°63°0%
- Sat85°61°1%
- Sun81°63°1%
- Mon100°69°5%
- Tue103°74°2%
- Wed97°72°1%
- Thu99°72°0%
- Fri99°67°0%
- Sat92°60°7%
- Sun94°60°5%
- Mon96°66°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 California Polytechnic State University
- 93410
- 93405
- 93407