Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 9°F | 24°F | 16°F | 0.8" |
February | 11°F | 28°F | 18°F | 1.4" |
March | 26°F | 44°F | 33°F | 2.1" |
April | 37°F | 58°F | 46°F | 3.5" |
May | 48°F | 70°F | 58°F | 5.7" |
June | 58°F | 79°F | 68°F | 5.6" |
July | 62°F | 83°F | 72°F | 5.9" |
August | 59°F | 79°F | 69°F | 6.5" |
September | 52°F | 74°F | 61°F | 4.8" |
October | 39°F | 60°F | 48°F | 7.9" |
November | 26°F | 45°F | 34°F | 2.6" |
December | 12°F | 27°F | 19°F | 0.7" |
Index | Heron Lake | Minnesota | National |
Air quality index | 32 | 35 | 42 |
Pollution index | 1,563,560 | 1,854,519 | 2,726,193 |
Measurement | Total |
Days measured | 362 |
Days with good air quality | 327 |
Days with moderate air quality | 35 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.020% |
Carbon Tetrachloride | 0.001% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Lakefield, MN | 1,683 | 32 | 36.0% |
Dundee, MN | 72 | 32 | 36.0% |
Okabena, MN | 208 | 32 | 36.0% |
Wilder, MN | 36 | 32 | 36.0% |
Kinbrae, MN | 4 | 32 | 36.0% |
Heron Lake, MN | 701 | 32 | 36.0% |
City | Population | Air Quality Index | National Avg. |
Greensboro, FL | 701 | 40 | 20.0% |
Molena, GA | 701 | 42 | 16.0% |
Elsah, IL | 701 | 54 | 8.0% |
Wheatfield, IN | 701 | 37 | 26.0% |
Evarts, KY | 701 | 39 | 22.0% |
Heron Lake, MN | 701 | 32 | 36.0% |