| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 37°F | 29°F | 4.2" |
| February | 28°F | 47°F | 36°F | 1.6" |
| March | 34°F | 57°F | 44°F | 2.3" |
| April | 37°F | 64°F | 50°F | 2.0" |
| May | 45°F | 74°F | 59°F | 2.8" |
| June | 52°F | 84°F | 67°F | 1.7" |
| July | 59°F | 94°F | 77°F | 3.8" |
| August | 56°F | 92°F | 73°F | 1.7" |
| September | 48°F | 81°F | 63°F | 3.2" |
| October | 38°F | 66°F | 50°F | 3.2" |
| November | 31°F | 51°F | 39°F | 1.9" |
| December | 22°F | 38°F | 29°F | 2.6" |
| Index | Wilder | Idaho | National |
| Air quality index | 36 | 32 | 42 |
| Pollution index | 1,647,310 | 2,063,710 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 293 |
| Days with moderate air quality | 60 |
| Days w/ poor A.Q. for sensitive groups | 9 |
| Days with unhealthy air quality | 3 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Greenleaf, ID | 1,123 | 36 | 28.0% |
| Notus, ID | 594 | 36 | 28.0% |
| Homedale, ID | 2,688 | 36 | 28.0% |
| Parma, ID | 1,990 | 36 | 28.0% |
| Marsing, ID | 1,379 | 36 | 28.0% |
| Wilder, ID | 1,740 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Blackwater, AZ | 1,740 | 74 | 48.0% |
| Boronda, CA | 1,740 | 37 | 26.0% |
| Fern Acres, HI | 1,740 | 16 | 68.0% |
| Charlotte Hall, MD | 1,740 | 47 | 6.0% |
| Richmond, ME | 1,740 | 28 | 44.0% |
| Wilder, ID | 1,740 | 36 | 28.0% |
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