Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 1°F | 19°F | 10°F | 0.6" |
February | 2°F | 20°F | 10°F | 0.5" |
March | 17°F | 36°F | 26°F | 3.3" |
April | 31°F | 54°F | 41°F | 3.2" |
May | 43°F | 68°F | 55°F | 8.4" |
June | 54°F | 77°F | 65°F | 6.0" |
July | 58°F | 83°F | 70°F | 6.1" |
August | 55°F | 81°F | 67°F | 5.6" |
September | 47°F | 72°F | 59°F | 5.5" |
October | 35°F | 56°F | 45°F | 5.3" |
November | 21°F | 39°F | 29°F | 3.2" |
December | 4°F | 21°F | 12°F | 2.0" |
Index | Grafton | North Dakota | National |
Air quality index | 33 | 35 | 42 |
Pollution index | 536,122 | 1,038,665 | 2,726,193 |
Measurement | Total |
Days measured | 363 |
Days with good air quality | 327 |
Days with moderate air quality | 34 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 1 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.001% |
Lead | 0.020% |
Mercury | 0.004% |
City | Population | Air Quality Index | National Avg. |
Hoople, ND | 265 | 33 | 34.0% |
Ardoch, ND | 28 | 33 | 34.0% |
St. Thomas, ND | 340 | 33 | 34.0% |
Pisek, ND | 75 | 33 | 34.0% |
Auburn, ND | 0 | 33 | 34.0% |
Grafton, ND | 4,139 | 33 | 34.0% |
City | Population | Air Quality Index | National Avg. |
Haleyville, AL | 4,139 | 37 | 26.0% |
North Wilkesboro, NC | 4,139 | 26 | 48.0% |
Falls City, NE | 4,139 | 43 | 14.0% |
Northwest Harbor, NY | 4,138 | 37 | 26.0% |
Broadmoor, CA | 4,140 | 43 | 14.0% |
Grafton, ND | 4,139 | 33 | 34.0% |