Fairmount, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Fairmount weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Drizzle13%0.04″93°78°—
- SundayJul 5Overcast——94°75°+1°
- MondayJul 6Thunderstorm78%0.06″93°75°-1°
- TuesdayJul 7Showers78%0.23″88°73°-5°
- WednesdayJul 8Thunderstorm40%0.01″79°69°-9°
- ThursdayJul 9Light Drizzle——89°68°+10°
- FridayJul 10Partly Cloudy31%—96°76°+7°
AQI 160 (Unhealthy), driven by Ozone. AQI up 102 in the last 6 hours — air quality is degrading. Ozone at AQI 166. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
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 166. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 166
- UV peak
- 0.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 20
PM × Wind × Precip
PM2.5 at 19.4 µg/m³, PM10 at 22.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.86
- Wind
- light
- Recent rain
- 1h 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
- 10:54 PM
- Moonset
- 10:08 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Fairmount at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: April 5 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Fairmount
- Sat93°78°13%
- Sun94°75°5%
- Mon93°75°78%
- Tue88°73°78%
- Wed79°69°40%
- Thu89°68°8%
- Fri96°76°31%
- Sat97°75°31%
- Sun88°71°26%
- Mon80°69°26%
- Tue88°69°20%
- Wed90°72°40%
- Thu87°74°38%
- Fri92°72°38%
- Sat94°75°40%
- Sun94°77°39%
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 — Fairmount
SPC has placed Fairmount in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
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.
ZIP codes in Fairmount
- 21871
- 21867