Potomac Heights, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Potomac Heights weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Rain36%0.06″100°76°—
- SundayJul 5Light Rain43%0.13″98°75°-2°
- MondayJul 6Light Drizzle82%0.02″89°72°-9°
- TuesdayJul 7Showers81%0.02″87°68°-2°
- WednesdayJul 8Heavy Showers41%1.3″78°69°-9°
- ThursdayJul 9Overcast12%—95°67°+17°
- FridayJul 10Light Drizzle40%0.02″98°71°+3°
AQI 103 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 48 in the last 6 hours — air quality is degrading. Ozone at AQI 85 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 85 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 85
- UV peak
- 2.1 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 85
PM × Wind × Precip
PM2.5 at 9.5 µg/m³ (AQI 52) with a 0.88 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.88
- Wind
- light
- 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
- 11:00 PM
- Moonset
- 10:13 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Potomac Heights at a glance
- Today vs. normal: 26°F above the seasonal normal for this latitude
- Last frost: April 8 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Potomac Heights
- Sat100°76°36%
- Sun98°75°43%
- Mon89°72°82%
- Tue87°68°81%
- Wed78°69°41%
- Thu95°67°12%
- Fri98°71°40%
- Sat96°69°39%
- Sun83°67°29%
- Mon81°66°23%
- Tue88°63°19%
- Wed93°67°41%
- Thu91°68°43%
- Fri91°70°43%
- Sat97°69°39%
- Sun90°69°37%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, 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 — Potomac Heights
SPC has placed Potomac Heights in the Enhanced Risk category for severe thunderstorms today.
- TODAYENHEnhanced Risk
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
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 Potomac Heights
- 20640