| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 32°F | 44°F | 37°F | 2.7" |
| February | 32°F | 45°F | 38°F | 2.7" |
| March | 40°F | 55°F | 47°F | 3.4" |
| April | 51°F | 68°F | 59°F | 3.8" |
| May | 60°F | 76°F | 67°F | 3.9" |
| June | 70°F | 86°F | 77°F | 4.5" |
| July | 75°F | 90°F | 82°F | 5.0" |
| August | 73°F | 87°F | 79°F | 4.6" |
| September | 67°F | 80°F | 73°F | 4.4" |
| October | 55°F | 69°F | 62°F | 4.6" |
| November | 45°F | 58°F | 50°F | 2.4" |
| December | 37°F | 48°F | 42°F | 4.1" |
| Index | Towson | Maryland | National |
| Air quality index | 46 | 43 | 42 |
| Pollution index | 9,823,920 | 5,342,367 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 223 |
| Days with moderate air quality | 129 |
| Days w/ poor A.Q. for sensitive groups | 13 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.050% |
| Lead | 0.030% |
| Mercury | 0.140% |
| City | Population | Air Quality Index | National Avg. |
| Hampstead, MD | 6,403 | 46 | 8.0% |
| Owings Mills, MD | 34,711 | 46 | 8.0% |
| Timonium, MD | 10,642 | 46 | 8.0% |
| Edgemere, MD | 8,652 | 46 | 8.0% |
| Linthicum, MD | 10,116 | 46 | 8.0% |
| Towson, MD | 57,542 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| St. Peters, MO | 57,536 | 54 | 8.0% |
| Santee, CA | 57,407 | 64 | 28.0% |
| Midwest City, OK | 57,392 | 48 | 4.0% |
| Richland, WA | 57,353 | 37 | 26.0% |
| Bradenton, FL | 57,346 | 38 | 24.0% |
| Towson, MD | 57,542 | 46 | 8.0% |
Here are the best places to live in Maryland
See the best places to live in Towson
Check out the 10 most dangerous cities in Maryland
Safest Cities In The US