Monmouth, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Monmouth weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Light Drizzle19%—97°71°—
- MondayJul 6Overcast——98°67°+1°
- TuesdayJul 7Mostly Clear——103°61°+5°
- WednesdayJul 8Clear——105°63°+2°
- ThursdayJul 9Clear——109°66°+4°
- FridayJul 10Mostly Clear——111°69°+2°
- SaturdayJul 11Overcast——114°70°+3°
AQI 55 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 12.3 µg/m³, PM10 at 28.3 µg/m³ — typical background levels with no transport signature.
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 35 now. With UV 7.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 33 around 1 PM.
- Present
- AQI 35
- UV peak
- 7.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 33
PM × Wind × Precip
PM2.5 at 12.3 µg/m³, PM10 at 28.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.43
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 11:17 PM
- Moonset
- 11:17 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Monmouth at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: March 26 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Monmouth
- Sun97°71°19%
- Mon98°67°0%
- Tue103°61°0%
- Wed105°63°0%
- Thu109°66°0%
- Fri111°69°0%
- Sat114°70°0%
- Sun100°76°2%
- Mon104°68°4%
- Tue109°78°4%
- Wed113°80°1%
- Thu113°75°3%
- Fri117°76°3%
- Sat111°76°10%
- Sun112°77°5%
- Mon111°72°10%
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 Monmouth
- 93725