Madison, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Madison weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast24%—101°80°—
- SundayJul 5Overcast24%—98°78°-3°
- MondayJul 6Thunderstorm71%0.32″91°72°-7°
- TuesdayJul 7Light Showers71%—86°72°-5°
- WednesdayJul 8Light Showers36%0.01″79°70°-7°
- ThursdayJul 9Partly Cloudy——90°69°+11°
- FridayJul 10Overcast32%—98°74°+8°
AQI 151 (Unhealthy), driven by Ozone. AQI up 95 in the last 6 hours — air quality is degrading. Ozone at AQI 158 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
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 158 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 158
- UV peak
- 2.0 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 158
PM × Wind × Precip
PM2.5 at 13.7 µg/m³, PM10 at 15.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.90
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 10:56 PM
- Moonset
- 10:10 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Madison at a glance
- Today vs. normal: 25°F above the seasonal normal for this latitude
- Last frost: April 7 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 21648
16-Day Forecast — Madison
- Sat101°83°24%
- Sun98°79°24%
- Mon91°72°71%
- Tue86°72°71%
- Wed79°70°36%
- Thu90°69°9%
- Fri98°74°32%
- Sat93°76°33%
- Sun84°73°26%
- Mon81°69°18%
- Tue88°67°16%
- Wed92°71°41%
- Thu90°71°41%
- Fri93°74°39%
- Sat99°74°33%
- Sun94°77°45%
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 — Madison
SPC has placed Madison 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 Madison
- 21648
- 21677