Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 30°F | 43°F | 36°F | 2.2" |
February | 32°F | 45°F | 37°F | 2.2" |
March | 39°F | 54°F | 45°F | 3.0" |
April | 49°F | 65°F | 56°F | 3.1" |
May | 59°F | 73°F | 65°F | 3.5" |
June | 69°F | 82°F | 75°F | 4.3" |
July | 73°F | 85°F | 79°F | 4.8" |
August | 71°F | 83°F | 77°F | 4.2" |
September | 66°F | 78°F | 72°F | 3.3" |
October | 54°F | 67°F | 60°F | 5.0" |
November | 43°F | 56°F | 49°F | 2.0" |
December | 36°F | 47°F | 41°F | 3.4" |
Index | Mayo | Maryland | National |
Air quality index | 47 | 43 | 42 |
Pollution index | 3,494,010 | 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 | 0.010% |
Benzene | 0.040% |
Carbon Tetrachloride | 0.002% |
Lead | 0.010% |
Mercury | 0.001% |
City | Population | Air Quality Index | National Avg. |
North Beach, MD | 2,790 | 41 | 18.0% |
Tilghman Island, MD | 831 | 41 | 18.0% |
Chesapeake Beach, MD | 5,996 | 41 | 18.0% |
Arden on the Severn, MD | 1,457 | 46 | 8.0% |
Crownsville, MD | 1,473 | 46 | 8.0% |
Mayo, MD | 7,979 | 47 | 6.0% |
City | Population | Air Quality Index | National Avg. |
Duvall, WA | 7,979 | 45 | 10.0% |
Wyoming, MN | 7,976 | 46 | 8.0% |
Greenbriar, VA | 7,976 | 47 | 6.0% |
Brentwood, MO | 7,986 | 54 | 8.0% |
Beckwith, ON | 7,986 | n/a | |
Mayo, MD | 7,979 | 47 | 6.0% |