| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 39°F | 29°F | 4.7" |
| February | 16°F | 38°F | 27°F | 4.6" |
| March | 24°F | 45°F | 35°F | 8.7" |
| April | 36°F | 59°F | 47°F | 9.5" |
| May | 44°F | 68°F | 56°F | 8.2" |
| June | 55°F | 80°F | 68°F | 4.3" |
| July | 60°F | 84°F | 72°F | 5.8" |
| August | 58°F | 84°F | 72°F | 2.1" |
| September | 50°F | 79°F | 64°F | 4.6" |
| October | 45°F | 66°F | 55°F | 10.6" |
| November | 30°F | 54°F | 42°F | 5.6" |
| December | 21°F | 40°F | 30°F | 6.0" |
| Index | Foxborough | Massachusetts | National |
| Air quality index | 44 | 40 | 42 |
| Pollution index | 8,312,000 | 8,399,610 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 289 |
| Days with moderate air quality | 74 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.090% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.210% |
| Mercury | 0.060% |
| City | Population | Air Quality Index | National Avg. |
| Framingham, MA | 72,846 | 40 | 20.0% |
| Hopedale, MA | 3,643 | 40 | 20.0% |
| Hopkinton, MA | 3,864 | 40 | 20.0% |
| Milford, MA | 26,072 | 40 | 20.0% |
| Cordaville, MA | 2,884 | 40 | 20.0% |
| Foxborough, MA | 6,119 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Los Ranchos de Albuquerque, NM | 6,120 | 53 | 6.0% |
| Manistee, MI | 6,116 | 36 | 28.0% |
| Thompson's Station, TN | 6,116 | 31 | 38.0% |
| Sheridan, OR | 6,122 | 32 | 36.0% |
| Piedmont, SC | 6,122 | 46 | 8.0% |
| Foxborough, MA | 6,119 | 44 | 12.0% |
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