Ellicott City, MD Weather - Forecast & Monthly Averages

TEMPERATURE	53
HUMIDITY	77
PRESSURE	101930
WIND COND.	40 7.6

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Weather Quick Facts

The highest monthly average temperature in Ellicott City for July is 78.5 degrees
The lowest monthly average temperature in Ellicott City for January is 34.4 degrees
The most monthly precipitation in Ellicott City occurs in October with 5.7 inches
The air quality index in Ellicott City is 9% worse than the national average
The pollution index in Ellicott City is 13% worse than the national average

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Ellicott City Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	25°F	46°F	34°F	3.1"
February	25°F	47°F	36°F	2.7"
March	33°F	58°F	45°F	3.6"
April	43°F	70°F	56°F	3.8"
May	52°F	77°F	65°F	4.1"
June	62°F	86°F	74°F	4.7"
July	67°F	90°F	78°F	4.5"
August	65°F	88°F	76°F	4.7"
September	58°F	82°F	70°F	4.3"
October	47°F	70°F	58°F	5.7"
November	36°F	59°F	47°F	2.8"
December	30°F	50°F	39°F	4.3"

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Ellicott City air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	Ellicott City	Maryland	National
Air quality index	46	43	42
Pollution index	3,089,800	5,342,367	2,726,193

Ellicott City air quality information

Measurement	Total
Days measured	365
Days with good air quality	223
Days with moderate air quality	129
Days w/ poor A.Q. for sensitive groups	13
Days with unhealthy air quality	0

Ellicott City air quality information

Pollutant	Total
Arsenic	0.003%
Benzene	0.040%
Carbon Tetrachloride	0.010%
Lead	0.070%
Mercury	0.010%

Average monthly Ellicott City temperature with heat index

Ellicott City monthly precipitation with daily maximum

Ellicott City monthly snow depth with daily maximum

Ellicott City monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Arden on the Severn, MD	1,457	46	8.0%
Gambrills, MD	2,929	46	8.0%
Maryland City, MD	17,681	46	8.0%
Severna Park, MD	38,729	46	8.0%
Ferndale, MD	17,732	46	8.0%
Ellicott City, MD	73,272	46	8.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Flagstaff, AZ	73,319	45	10.0%
Apple Valley, CA	73,339	89	78.0%
Schaumburg, IL	73,392	55	10.0%
Bismarck, ND	73,435	36	28.0%
St. Albert, AB	73,103	n/a
Ellicott City, MD	73,272	46	8.0%

Source: The Ellicott City, MD weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.