Westminster, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Westminster weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast26%—98°79°—
- SundayJul 5Light Drizzle46%0.02″94°75°-4°
- MondayJul 6Thunderstorm83%0.12″79°70°-15°
- TuesdayJul 7Thunderstorm83%1.1″82°70°+3°
- WednesdayJul 8Light Drizzle33%0.06″75°65°-7°
- ThursdayJul 9Overcast10%—86°65°+11°
- FridayJul 10Overcast44%—85°69°-1°
AQI 86 (Moderate), driven by Ozone. AQI up 35 in the last 6 hours — air quality is degrading. Ozone at AQI 80 — peak already passed at 1 PM under clear skies. 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 80 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 80
- UV peak
- 1.7 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 80
PM × Wind × Precip
PM2.5 at 7.6 µg/m³ (AQI 42) with a 0.89 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.89
- 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
- 11:01 PM
- Moonset
- 10:12 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Westminster at a glance
- Today vs. normal: 26°F above the seasonal normal for this latitude
- Last frost: April 13 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 21157, 21158
16-Day Forecast — Westminster
- Sat98°79°26%
- Sun94°75°46%
- Mon79°70°83%
- Tue82°70°83%
- Wed75°65°33%
- Thu86°65°10%
- Fri85°69°44%
- Sat86°67°30%
- Sun77°64°28%
- Mon79°65°17%
- Tue83°62°16%
- Wed84°62°35%
- Thu88°67°46%
- Fri87°70°46%
- Sat90°68°40%
- Sun83°69°52%
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 — Westminster
SPC has placed Westminster 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 Westminster
- 21158
- 21157