Secretary, Maryland Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Secretary weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——87°55°—
- FridayJun 5Overcast——92°61°+5°
- SaturdayJun 6Overcast14%—91°66°-1°
- SundayJun 7Drizzle24%—90°69°-1°
- MondayJun 8Drizzle——76°54°-14°
- TuesdayJun 9Partly Cloudy——83°50°+7°
- WednesdayJun 10Clear10%—88°60°+5°
Ozone at AQI 43 now. AQI down 12 over the last 6 hours (steady decline since this morning). With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 19 by mid-afternoon.
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 43 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 19 by mid-afternoon.
- Present
- AQI 43
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 19
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:27 AM
- Moonset
- 1:07 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Secretary at a glance
- Today vs. normal: 19°F below the seasonal normal for this latitude
- Last frost: April 8 (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 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.