| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 54°F | 42°F | 3.6" |
| February | 36°F | 57°F | 45°F | 3.7" |
| March | 45°F | 67°F | 55°F | 5.6" |
| April | 53°F | 76°F | 64°F | 6.5" |
| May | 61°F | 82°F | 71°F | 7.0" |
| June | 71°F | 91°F | 80°F | 3.1" |
| July | 73°F | 93°F | 82°F | 4.4" |
| August | 73°F | 93°F | 82°F | 3.6" |
| September | 66°F | 87°F | 75°F | 3.5" |
| October | 53°F | 76°F | 63°F | 4.3" |
| November | 43°F | 65°F | 53°F | 5.1" |
| December | 36°F | 55°F | 44°F | 6.4" |
| Index | Sweet Home | Arkansas | National |
| Air quality index | 45 | 38 | 42 |
| Pollution index | 424,982 | 1,487,822 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 235 |
| Days with moderate air quality | 130 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Alexander, AR | 3,263 | 45 | 10.0% |
| Hensley, AR | 45 | 45 | 10.0% |
| Landmark, AR | 3,628 | 45 | 10.0% |
| Natural Steps, AR | 562 | 45 | 10.0% |
| Sherwood, AR | 31,225 | 45 | 10.0% |
| Sweet Home, AR | 926 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Henderson, MN | 926 | 46 | 8.0% |
| Diamond, MO | 926 | 37 | 26.0% |
| Franklin, NE | 926 | 19 | 62.0% |
| Tully, NY | 926 | 37 | 26.0% |
| Hauser, ID | 927 | 43 | 14.0% |
| Sweet Home, AR | 926 | 45 | 10.0% |
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