Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 20°F | 37°F | 28°F | 2.6" |
February | 21°F | 39°F | 29°F | 3.2" |
March | 34°F | 55°F | 43°F | 4.1" |
April | 44°F | 67°F | 55°F | 6.7" |
May | 54°F | 76°F | 65°F | 4.6" |
June | 63°F | 85°F | 74°F | 8.5" |
July | 66°F | 87°F | 76°F | 11.2" |
August | 64°F | 86°F | 74°F | 8.1" |
September | 56°F | 80°F | 67°F | 11.5" |
October | 46°F | 68°F | 56°F | 6.3" |
November | 34°F | 54°F | 43°F | 5.1" |
December | 25°F | 40°F | 32°F | 5.3" |
Index | San Jose | Illinois | National |
Air quality index | 41 | 41 | 50 |
Pollution index | 1,277,890 | 3,347,295 | 5,066,862 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 285 |
Days with moderate air quality | 78 |
Days w/ poor A.Q. for sensitive groups | 2 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.050% |
Carbon Tetrachloride | 0.000% |
Lead | 0.010% |
Mercury | 0.002% |
City, State | Population | Air Quality Index | National Avg. |
New Holland, IL | 187 | 40 | 20% |
Lincoln, IL | 14,253 | 40 | 20% |
Easton, IL | 376 | 40 | 20% |
Mason City, IL | 2,272 | 40 | 20% |
Middletown, IL | 323 | 40 | 20% |
San Jose, IL | 645 | 41 | 18% |
City, State | Population | Air Quality Index | National Avg. |
Stratford, IA | 645 | 37 | 26% |
South Webster, OH | 645 | 14 | 72% |
Cordova, IL | 645 | 42 | 16% |
Greenville, IN | 645 | 49 | 2% |
York Haven, PA | 645 | 41 | 18% |
San Jose, IL | 645 | 41 | 18% |