Monrovia, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Monrovia weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——87°62°—
- MondayJul 6Clear——88°59°+1°
- TuesdayJul 7Clear——92°61°+4°
- WednesdayJul 8Clear——93°75°+1°
- ThursdayJul 9Clear——95°78°+2°
- FridayJul 10Clear——91°75°-4°
- SaturdayJul 11Overcast——91°75°0°
AQI 61 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 19.0 µg/m³ (AQI 69) with a 0.83 fine-to-coarse ratio and 4 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 19.0 µg/m³ (AQI 69) with a 0.83 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.83
- 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
- 11:08 PM
- Moonset
- 11:11 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Monrovia at a glance
- Today vs. normal: 75°F — typical for the season
- 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: 91016
16-Day Forecast — Monrovia
- Sun87°62°1%
- Mon88°59°1%
- Tue92°61°0%
- Wed93°75°0%
- Thu95°78°0%
- Fri91°75°0%
- Sat91°75°0%
- Sun92°75°1%
- Mon93°73°6%
- Tue92°75°9%
- Wed96°80°3%
- Thu98°82°10%
- Fri107°87°10%
- Sat111°86°10%
- Sun94°83°19%
- Mon95°79°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 Monrovia
- 91016
- 91017
- 91185