Why stop at city-to-city? With Local Insights, you can compare neighborhoods, zip codes, or even exact addresses. Access 300+ hyperlocal data points—from schools and crime to housing and amenities—to see which area is the better fit.
| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 7°F | 28°F | 17°F | 1.4" |
| February | 8°F | 29°F | 18°F | 1.6" |
| March | 17°F | 39°F | 28°F | 2.0" |
| April | 31°F | 54°F | 42°F | 2.9" |
| May | 42°F | 67°F | 54°F | 4.2" |
| June | 51°F | 73°F | 62°F | 5.1" |
| July | 55°F | 78°F | 67°F | 5.3" |
| August | 53°F | 76°F | 64°F | 4.7" |
| September | 46°F | 70°F | 57°F | 3.2" |
| October | 37°F | 57°F | 46°F | 4.3" |
| November | 26°F | 45°F | 34°F | 2.4" |
| December | 16°F | 32°F | 24°F | 3.0" |
| Index | Bethlehem | New Hampshire | National |
| Air quality index | 40 | 34 | 42 |
| Pollution index | 1,278,430 | 3,959,618 | 2,726,193 |
| Measurement | Total |
| Days measured | 324 |
| Days with good air quality | 314 |
| Days with moderate air quality | 10 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Mountain Lakes, NH | 643 | 34 | 32.0% |
| Concord, VT | 176 | 40 | 20.0% |
| Lancaster, NH | 1,892 | 40 | 20.0% |
| Lisbon, NH | 843 | 40 | 20.0% |
| Littleton, NH | 4,294 | 40 | 20.0% |
| Bethlehem, NH | 1,061 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Bluewater, AZ | 1,061 | 13 | 74.0% |
| Claypool, AZ | 1,061 | 60 | 20.0% |
| South Pekin, IL | 1,061 | 41 | 18.0% |
| Marion Center, MA | 1,061 | 36 | 28.0% |
| Highlands, NC | 1,061 | 41 | 18.0% |
| Bethlehem, NH | 1,061 | 40 | 20.0% |
Here are the best places to live in New Hampshire
These are the 10 cheapest cities in New Hampshire
Check out the 10 most dangerous cities in New Hampshire
Most Dangerous Cities In The US