Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 22°F | 36°F | 28°F | 2.0" |
February | 25°F | 41°F | 33°F | 1.4" |
March | 31°F | 50°F | 40°F | 2.6" |
April | 35°F | 59°F | 47°F | 1.1" |
May | 43°F | 70°F | 56°F | 1.4" |
June | 50°F | 76°F | 63°F | 1.5" |
July | 57°F | 88°F | 73°F | 0.4" |
August | 56°F | 87°F | 71°F | 0.4" |
September | 48°F | 76°F | 61°F | 0.6" |
October | 38°F | 60°F | 48°F | 1.6" |
November | 29°F | 45°F | 36°F | 2.2" |
December | 21°F | 34°F | 28°F | 2.9" |
Index | Malden | Washington | National |
Air quality index | 43 | 36 | 42 |
Pollution index | 2,233,350 | 4,541,850 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 252 |
Days with moderate air quality | 111 |
Days w/ poor A.Q. for sensitive groups | 2 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.002% |
Benzene | 0.030% |
Carbon Tetrachloride | 0.002% |
Lead | 0.003% |
Mercury | 0.001% |
City | Population | Air Quality Index | National Avg. |
Oakesdale, WA | 412 | 18 | 64.0% |
St. John, WA | 612 | 18 | 64.0% |
Latah, WA | 195 | 43 | 14.0% |
Fairfield, WA | 485 | 43 | 14.0% |
Spangle, WA | 231 | 43 | 14.0% |
Malden, WA | 219 | 43 | 14.0% |
City | Population | Air Quality Index | National Avg. |
Catherine, CO | 219 | 44 | 12.0% |
Luxemburg, IA | 219 | 29 | 42.0% |
Mineral, IL | 219 | 42 | 16.0% |
Standard City, IL | 219 | 40 | 20.0% |
West Point, IL | 219 | 41 | 18.0% |
Malden, WA | 219 | 43 | 14.0% |