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| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 46°F | 34°F | 3.1" |
| February | 25°F | 47°F | 36°F | 2.7" |
| March | 33°F | 58°F | 45°F | 3.6" |
| April | 43°F | 70°F | 56°F | 3.8" |
| May | 52°F | 77°F | 65°F | 4.1" |
| June | 62°F | 86°F | 74°F | 4.7" |
| July | 67°F | 90°F | 78°F | 4.5" |
| August | 65°F | 88°F | 76°F | 4.7" |
| September | 58°F | 82°F | 70°F | 4.3" |
| October | 47°F | 70°F | 58°F | 5.7" |
| November | 36°F | 59°F | 47°F | 2.8" |
| December | 30°F | 50°F | 39°F | 4.3" |
| Index | Konterra | Maryland | National |
| Air quality index | 47 | 43 | 42 |
| Pollution index | 15,133,000 | 5,342,367 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 209 |
| Days with moderate air quality | 145 |
| Days w/ poor A.Q. for sensitive groups | 10 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.070% |
| Benzene | 0.130% |
| Carbon Tetrachloride | 0.060% |
| Lead | 0.070% |
| Mercury | 0.130% |
| City | Population | Air Quality Index | National Avg. |
| Elkridge, MD | 21,778 | 46 | 8.0% |
| Jessup, MD | 10,458 | 46 | 8.0% |
| Catonsville, MD | 41,592 | 46 | 8.0% |
| Maryland City, MD | 17,681 | 46 | 8.0% |
| Ferndale, MD | 17,732 | 46 | 8.0% |
| Konterra, MD | 2,368 | 47 | 6.0% |
| City | Population | Air Quality Index | National Avg. |
| Penngrove, CA | 2,368 | 34 | 32.0% |
| Grissom AFB, IN | 2,368 | 37 | 26.0% |
| Warsaw, VA | 2,368 | 44 | 12.0% |
| Holcomb, KS | 2,367 | 15 | 70.0% |
| Wells, MN | 2,367 | 15 | 70.0% |
| Konterra, MD | 2,368 | 47 | 6.0% |
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