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| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 11°F | 28°F | 19°F | 0.9" |
| February | 13°F | 31°F | 21°F | 2.2" |
| March | 28°F | 47°F | 36°F | 3.6" |
| April | 39°F | 62°F | 49°F | 6.9" |
| May | 50°F | 73°F | 60°F | 6.0" |
| June | 60°F | 82°F | 70°F | 6.7" |
| July | 64°F | 85°F | 74°F | 7.7" |
| August | 61°F | 82°F | 71°F | 11.0" |
| September | 53°F | 76°F | 64°F | 5.6" |
| October | 41°F | 63°F | 51°F | 5.4" |
| November | 29°F | 48°F | 38°F | 2.4" |
| December | 16°F | 32°F | 23°F | 2.9" |
| Index | Thor | Iowa | National |
| Air quality index | 37 | 39 | 42 |
| Pollution index | 1,476,650 | 1,154,535 | 2,726,193 |
| Measurement | Total |
| Days measured | 214 |
| Days with good air quality | 210 |
| Days with moderate air quality | 4 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| 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. |
| Bode, IA | 350 | 15 | 70.0% |
| Livermore, IA | 434 | 15 | 70.0% |
| Goldfield, IA | 631 | 15 | 70.0% |
| Renwick, IA | 249 | 15 | 70.0% |
| Hardy, IA | 57 | 15 | 70.0% |
| Thor, IA | 209 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Allakaket, AK | 209 | 38 | 24.0% |
| Kaltag, AK | 209 | 38 | 24.0% |
| Adin, CA | 209 | 29 | 42.0% |
| Valley Home, CA | 209 | 49 | 2.0% |
| Oakville, IA | 209 | 32 | 36.0% |
| Thor, IA | 209 | 37 | 26.0% |
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