| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 59°F | 46°F | 7.3" |
| February | 40°F | 63°F | 50°F | 3.6" |
| March | 48°F | 71°F | 59°F | 3.7" |
| April | 55°F | 78°F | 66°F | 6.6" |
| May | 62°F | 84°F | 73°F | 6.5" |
| June | 71°F | 93°F | 82°F | 7.0" |
| July | 74°F | 96°F | 85°F | 4.2" |
| August | 74°F | 97°F | 85°F | 5.7" |
| September | 66°F | 90°F | 77°F | 5.4" |
| October | 55°F | 80°F | 67°F | 10.9" |
| November | 47°F | 69°F | 57°F | 3.2" |
| December | 38°F | 60°F | 48°F | 3.7" |
| Index | Alvarado | Texas | National |
| Air quality index | 33 | 52 | 42 |
| Pollution index | 3,706,540 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 329 |
| Days with moderate air quality | 33 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.040% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Cross Timber, TX | 288 | 33 | 34.0% |
| Rio Vista, TX | 1,035 | 33 | 34.0% |
| Joshua, TX | 7,818 | 33 | 34.0% |
| Cleburne, TX | 30,812 | 33 | 34.0% |
| Crowley, TX | 15,972 | 33 | 34.0% |
| Alvarado, TX | 4,282 | 33 | 34.0% |
| City | Population | Air Quality Index | National Avg. |
| Plymouth, NH | 4,281 | 31 | 38.0% |
| Ashville, OH | 4,281 | 46 | 8.0% |
| Summerville, GA | 4,283 | 40 | 20.0% |
| Waimanalo Beach, HI | 4,280 | 30 | 40.0% |
| Millinocket, ME | 4,280 | 31 | 38.0% |
| Alvarado, TX | 4,282 | 33 | 34.0% |
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