Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 23°F | 33°F | 27°F | 12.2" |
February | 26°F | 35°F | 30°F | 7.2" |
March | 29°F | 39°F | 33°F | 11.1" |
April | 32°F | 46°F | 37°F | 6.3" |
May | 39°F | 55°F | 45°F | 5.8" |
June | 43°F | 60°F | 49°F | 4.4" |
July | 49°F | 70°F | 57°F | 1.2" |
August | 51°F | 70°F | 58°F | 1.5" |
September | 46°F | 63°F | 52°F | 4.1" |
October | 38°F | 50°F | 42°F | 9.1" |
November | 30°F | 37°F | 33°F | 14.5" |
December | 23°F | 31°F | 26°F | 12.2" |
Index | Ronald | Washington | National |
Air quality index | 23 | 36 | 42 |
Pollution index | 422,626 | 4,541,850 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 305 |
Days with moderate air quality | 60 |
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 | 0.001% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Cle Elum, WA | 2,662 | 23 | 54.0% |
Easton, WA | 302 | 23 | 54.0% |
Roslyn, WA | 608 | 23 | 54.0% |
South Cle Elum, WA | 799 | 23 | 54.0% |
Ronald, WA | 202 | 23 | 54.0% |
City | Population | Air Quality Index | National Avg. |
Fairford, AL | 202 | 42 | 16.0% |
Ratcliff, AR | 202 | 36 | 28.0% |
Carrizo, AZ | 202 | 44 | 12.0% |
Greenhorn, CA | 202 | 44 | 12.0% |
Alpine, CO | 202 | 44 | 12.0% |
Ronald, WA | 202 | 23 | 54.0% |