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 | Walpole | Massachusetts | National |
Air quality index | 43 | 40 | 42 |
Pollution index | 14,818,200 | 8,399,610 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 291 |
Days with moderate air quality | 73 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.020% |
Benzene | 0.150% |
Carbon Tetrachloride | 0.050% |
Lead | 0.130% |
Mercury | 0.040% |
City | Population | Air Quality Index | National Avg. |
Milford, MA | 26,072 | 40 | 20.0% |
Cordaville, MA | 2,884 | 40 | 20.0% |
Framingham, MA | 72,846 | 40 | 20.0% |
Hopkinton, MA | 3,864 | 40 | 20.0% |
Brookline, MA | 59,223 | 43 | 14.0% |
Walpole, MA | 6,211 | 43 | 14.0% |
City | Population | Air Quality Index | National Avg. |
Crystal Lake, FL | 6,211 | 36 | 28.0% |
Lindale, TX | 6,212 | 36 | 28.0% |
Bridgeport, MI | 6,208 | 26 | 48.0% |
Yardville, NJ | 6,208 | 41 | 18.0% |
Humboldt, SK | 6,215 | n/a | |
Walpole, MA | 6,211 | 43 | 14.0% |