Sycamore, IL Weather - Forecast & Monthly Averages

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TEMPERATURE	41
HUMIDITY	73
PRESSURE	102240
WIND COND.	30 20.5

Weather Quick Facts

The highest monthly average temperature in Sycamore for July is 72.2 degrees
The lowest monthly average temperature in Sycamore for January is 22.8 degrees
The most monthly precipitation in Sycamore occurs in August with 5.9 inches
The air quality index in Sycamore is equal to the national average
The pollution index in Sycamore is 31% better than the national average

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Sycamore 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	16°F	31°F	23°F	2.8"
February	17°F	32°F	24°F	2.8"
March	30°F	47°F	37°F	4.6"
April	39°F	61°F	49°F	5.8"
May	50°F	72°F	60°F	5.3"
June	59°F	80°F	69°F	5.6"
July	63°F	82°F	72°F	5.8"
August	61°F	81°F	70°F	5.9"
September	54°F	75°F	63°F	3.7"
October	43°F	63°F	52°F	5.8"
November	32°F	49°F	39°F	4.0"
December	21°F	34°F	27°F	3.1"

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Sycamore 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	Sycamore	Illinois	National
Air quality index	42	41	42
Pollution index	1,874,490	3,148,694	2,726,193

Sycamore air quality

Measurement	Total
Days measured	341
Days with good air quality	240
Days with moderate air quality	100
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.002%
Benzene	0.030%
Carbon Tetrachloride	0.010%
Lead	0.010%
Mercury	0.010%

Average monthly Sycamore temperature with heat index

Sycamore monthly precipitation with daily maximum

Sycamore monthly snow depth with daily maximum

Sycamore monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Prestbury, IL	2,025	0	100.0%
Lee, IL	390	0	100.0%
Kaneville, IL	532	0	100.0%
Cortland, IL	4,384	42	16.0%
Lily Lake, IL	1,360	42	16.0%
Sycamore, IL	18,485	42	16.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Colonia, NJ	18,484	51	2.0%
Marco Island, FL	18,491	34	32.0%
Gibsonton, FL	18,477	43	14.0%
Idylwood, VA	18,498	47	6.0%
St. Michael, MN	18,499	46	8.0%
Sycamore, IL	18,485	42	16.0%

Source: The Sycamore, IL 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.