Next 24 hours

US AQI

47Now
47
47
464 AM
44
43
437 AM
43
43
4510 AM
47
49
371 PM
26
14
144 PM
15
16
267 PM
37
47
4610 PM
46
45

Air quality outlook

Worst hour each day

Today49Good
Sat 1067Moderate
Sun 11500Hazardous
Mon 1263Moderate
Tue 1355Moderate

From our air-quality forecast models (GEOS-CF / GEFS aerosols). AQI uses the US EPA scale.

Live radar

Open full map

About Ellicott City weather

Ellicott City is in Howard County, Maryland, United States at 39.27°, -76.80°. Right now it’s 49° and mostly clear; today’s high is 72° with a 0% chance of rain.

Maryland's compact size belies its climatic diversity, spanning from the Atlantic coast to the Appalachian Mountains. The Chesapeake Bay, which bisects the state, significantly influences local weather by moderating temperatures and increasing humidity. The eastern shore and coastal plain have a humid subtropical climate, while the mountainous western region is decidedly continental.