Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 12°F | 31°F | 21°F | 1.6" |
February | 17°F | 38°F | 27°F | 1.3" |
March | 27°F | 51°F | 38°F | 1.8" |
April | 33°F | 61°F | 46°F | 2.3" |
May | 39°F | 70°F | 54°F | 2.3" |
June | 46°F | 83°F | 65°F | 1.2" |
July | 54°F | 93°F | 74°F | 0.5" |
August | 51°F | 90°F | 71°F | 0.8" |
September | 43°F | 80°F | 60°F | 1.5" |
October | 33°F | 64°F | 47°F | 1.5" |
November | 25°F | 49°F | 36°F | 1.2" |
December | 16°F | 34°F | 25°F | 1.2" |
Index | Portage | Utah | National |
Air quality index | 44 | 45 | 42 |
Pollution index | 859,937 | 3,340,369 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 272 |
Days with moderate air quality | 79 |
Days w/ poor A.Q. for sensitive groups | 14 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.000% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Clifton, ID | 697 | 44 | 12.0% |
Cache, UT | 120 | 44 | 12.0% |
Howell, UT | 347 | 44 | 12.0% |
Riverside, UT | 1,010 | 44 | 12.0% |
Dayton, ID | 546 | 44 | 12.0% |
Portage, UT | 237 | 44 | 12.0% |
City | Population | Air Quality Index | National Avg. |
Teller, AK | 237 | 38 | 24.0% |
Ulm, AR | 237 | 45 | 10.0% |
Melvin, IA | 237 | 36 | 28.0% |
McNabb, IL | 237 | 0 | 100.0% |
Menominee, IL | 237 | 29 | 42.0% |
Portage, UT | 237 | 44 | 12.0% |