Monrovia, Maryland Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Monrovia weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Heavy Rain62%0.64″93°70°—
- MondayJul 6Heavy Drizzle57%0.09″85°73°-8°
- TuesdayJul 7Light Drizzle51%0.05″74°66°-11°
- WednesdayJul 8Light Drizzle32%0.04″73°64°-1°
- ThursdayJul 9Light Showers59%—90°68°+17°
- FridayJul 10Light Drizzle41%0.02″84°69°-6°
- SaturdayJul 11Overcast23%—82°67°-2°
AQI 157 (Unhealthy), driven by Ozone. AQI up 103 in the last 6 hours — air quality is degrading. Ozone at AQI 80. Overcast through the UV peak window (cloud cover ~98%) — afternoon ozone should stay flat.
LIMIT OUTDOORS Limit prolonged outdoor exertion. Sensitive groups should avoid outdoor exertion. Consider rescheduling outdoor activities until AQI improves.
What's driving it
Ozone × UV × Sky
Ozone at AQI 80. Overcast through the UV peak window (cloud cover ~98%) — afternoon ozone should stay flat.
- Present
- AQI 80
- UV peak
- 0.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 10
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 21.3 µg/m³, PM10 to 23.9 µg/m³.
- PM2.5/PM10
- 0.89
- Wind
- breezy
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 11:26 PM
- Moonset
- 11:19 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Monrovia at a glance
- Today vs. normal: 17°F above the seasonal normal for this latitude
- Last frost: April 12 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 21770
16-Day Forecast — Monrovia
- Sun93°70°62%
- Mon85°73°57%
- Tue74°66°51%
- Wed73°64°32%
- Thu90°68°59%
- Fri84°69°41%
- Sat82°67°23%
- Sun80°67°26%
- Mon87°66°26%
- Tue70°61°15%
- Wed75°62°14%
- Thu79°61°27%
- Fri83°65°27%
- Sat85°65°27%
- Sun80°67°27%
- Mon77°66°31%
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.
SPC Convective Outlook
Storm Prediction Center — Monrovia
SPC has placed Monrovia in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Monrovia
- 21770