Chevy Chase Heights, Pennsylvania Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
Chevy Chase Heights weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Partly Cloudy——81°47°—
- FridayJun 5Overcast——84°58°+3°
- SaturdayJun 6Showers81%—81°63°-3°
- SundayJun 7Light Showers81%0.01″81°59°0°
- MondayJun 8Overcast——78°54°-3°
- TuesdayJun 9Overcast12%—81°58°+3°
- WednesdayJun 10Light Drizzle24%—77°60°-4°
PM2.5 at 7.8 µg/m³ (AQI 43) with a 0.99 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust. AQI up 47 in the last 6 hours — air quality is degrading.
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 34. Overcast through the UV peak window (cloud cover ~71%) — afternoon ozone should stay flat.
- Present
- AQI 34
- UV peak
- 0.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5 at 7.8 µg/m³ (AQI 43) with a 0.99 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.99
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 4:18 AM
- Moonset
- 2:20 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Chevy Chase Heights at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 20 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — Chevy Chase Heights
SPC has placed Chevy Chase Heights in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3SLGTSlight Risk
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.