St. Jacob, IL Weather - Forecast & Monthly Averages

TEMPERATURE	39
HUMIDITY
PRESSURE
WIND COND.

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Weather Quick Facts

The highest monthly average temperature in St. Jacob for July is 77.9 degrees
The lowest monthly average temperature in St. Jacob for January is 31.8 degrees
The most monthly precipitation in St. Jacob occurs in April with 10.2 inches
The air quality index in St. Jacob is 28% worse than the national average
The pollution index in St. Jacob is 122% worse than the national average

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St. Jacob 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	23°F	42°F	32°F	5.6"
February	25°F	45°F	34°F	3.8"
March	37°F	59°F	47°F	7.1"
April	47°F	70°F	57°F	10.2"
May	56°F	77°F	66°F	8.9"
June	65°F	87°F	76°F	9.2"
July	68°F	89°F	78°F	8.0"
August	66°F	88°F	76°F	7.8"
September	58°F	82°F	69°F	8.4"
October	47°F	70°F	57°F	8.6"
November	36°F	57°F	46°F	6.9"
December	28°F	45°F	36°F	8.2"

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St. Jacob 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	St. Jacob	Illinois	National
Air quality index	54	41	42
Pollution index	6,055,640	3,148,694	2,726,193

St. Jacob air quality

Measurement	Total
Days measured	365
Days with good air quality	134
Days with moderate air quality	221
Days w/ poor A.Q. for sensitive groups	8
Days with unhealthy air quality	2

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.070%
Carbon Tetrachloride	0.040%
Lead	0.100%
Mercury	0.230%

Average monthly St. Jacob temperature with heat index

St. Jacob monthly precipitation with daily maximum

St. Jacob monthly snow depth with daily maximum

St. Jacob monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Breese, IL	4,160	43	14.0%
Germantown, IL	1,279	43	14.0%
Fairview Heights, IL	16,143	54	8.0%
Old Ripley, IL	79	54	8.0%
Glen Carbon, IL	12,468	54	8.0%
St. Jacob, IL	1,529	54	8.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Mansura, LA	1,529	30	40.0%
Montrose, PA	1,529	38	24.0%
Gleason, TN	1,529	27	46.0%
Lookout Mountain, AL	1,528	39	22.0%
Rock Creek, AL	1,530	53	6.0%
St. Jacob, IL	1,529	54	8.0%

Source: The St. Jacob, 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.