Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 14°F | 36°F | 25°F | 0.7" |
February | 21°F | 43°F | 31°F | 0.4" |
March | 29°F | 55°F | 41°F | 0.6" |
April | 34°F | 63°F | 48°F | 0.5" |
May | 43°F | 73°F | 57°F | 0.8" |
June | 53°F | 87°F | 71°F | 0.5" |
July | 61°F | 92°F | 76°F | 0.6" |
August | 58°F | 88°F | 72°F | 0.8" |
September | 50°F | 80°F | 64°F | 1.2" |
October | 38°F | 64°F | 50°F | 1.0" |
November | 27°F | 51°F | 38°F | 0.2" |
December | 16°F | 36°F | 26°F | 0.9" |
Index | Castle Dale | Utah | National |
Air quality index | 46 | 45 | 42 |
Pollution index | 17,298,700 | 3,340,369 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 265 |
Days with moderate air quality | 99 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.020% |
Benzene | 0.030% |
Carbon Tetrachloride | 0.010% |
Lead | 0.020% |
Mercury | 1.190% |
City | Population | Air Quality Index | National Avg. |
Elmo, UT | 455 | 46 | 8.0% |
Ferron, UT | 1,475 | 46 | 8.0% |
Huntington, UT | 2,131 | 46 | 8.0% |
Orangeville, UT | 1,253 | 46 | 8.0% |
Cleveland, UT | 545 | 46 | 8.0% |
Castle Dale, UT | 1,380 | 46 | 8.0% |
City | Population | Air Quality Index | National Avg. |
Robie Creek, ID | 1,380 | 36 | 28.0% |
Greenville, IN | 1,380 | 49 | 2.0% |
Shepherd, MI | 1,380 | 26 | 48.0% |
Ellington, MO | 1,380 | 54 | 8.0% |
Monticello, MS | 1,380 | 35 | 30.0% |
Castle Dale, UT | 1,380 | 46 | 8.0% |