St. Leonard, Maryland Weather
Fireflies rise from the lawn. Day 76 of spring. Read this microseason across nine climate regions →
St. Leonard weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Mostly Clear——79°55°—
- ThursdayJun 4Overcast——86°62°+7°
- FridayJun 5Overcast——88°65°+2°
- SaturdayJun 6Overcast——92°66°+4°
- SundayJun 7Light Rain36%0.09″84°66°-8°
- MondayJun 8Light Drizzle19%—75°57°-9°
- TuesdayJun 9Partly Cloudy15%—75°53°0°
Ozone at AQI 73 — peak already passed at 1 PM under clear skies. AQI up 13 over the last 6 hours (gradual rise). Levels should ease through evening.
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 73 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 73
- UV peak
- 2.0 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 73
PM × Wind × Precip
PM2.5 at 6.1 µg/m³ (AQI 34) with a 0.86 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.86
- 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
- 2:50 AM
- Moonset
- 12:08 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
St. Leonard at a glance
- Today vs. normal: 78°F — typical for the season
- Last frost: April 7 (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 3, 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.