Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 13°F | 39°F | 25°F | 0.6" |
February | 16°F | 43°F | 29°F | 0.8" |
March | 28°F | 58°F | 42°F | 1.3" |
April | 39°F | 68°F | 53°F | 3.3" |
May | 49°F | 78°F | 63°F | 5.7" |
June | 61°F | 88°F | 74°F | 5.4" |
July | 65°F | 92°F | 78°F | 3.1" |
August | 62°F | 89°F | 75°F | 4.4" |
September | 53°F | 83°F | 67°F | 4.6" |
October | 40°F | 70°F | 54°F | 3.2" |
November | 28°F | 57°F | 41°F | 1.0" |
December | 16°F | 41°F | 27°F | 1.5" |
Index | Roca | Nebraska | National |
Air quality index | 31 | 86 | 50 |
Pollution index | 648,221 | 701,730 | 5,066,862 |
Measurement | Total |
Days measured | 360 |
Days with good air quality | 338 |
Days with moderate air quality | 22 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.002% |
Lead | 0.002% |
Mercury | 0.000% |
City, State | Population | Air Quality Index | National Avg. |
Cortland, NE | 547 | 31 | 38% |
Douglas, NE | 215 | 31 | 38% |
Alvo, NE | 132 | 31 | 38% |
Palmyra, NE | 659 | 31 | 38% |
Yankee Hill, NE | 378 | 31 | 38% |
Roca, NE | 195 | 31 | 38% |
City, State | Population | Air Quality Index | National Avg. |
Norwood, GA | 195 | 47 | 6% |
Maple City, MI | 195 | 36 | 28% |
Denning, AR | 195 | 36 | 28% |
Argonne, WI | 195 | 34 | 32% |
Harrison, ID | 195 | 43 | 14% |
Roca, NE | 195 | 31 | 38% |