Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 32°F | 47°F | 39°F | 6.9" |
February | 32°F | 52°F | 41°F | 3.7" |
March | 39°F | 58°F | 47°F | 6.2" |
April | 41°F | 60°F | 49°F | 4.1" |
May | 46°F | 68°F | 56°F | 2.9" |
June | 50°F | 69°F | 59°F | 2.5" |
July | 54°F | 78°F | 66°F | 2.9" |
August | 53°F | 78°F | 64°F | 4.9" |
September | 47°F | 70°F | 58°F | 4.4" |
October | 44°F | 61°F | 51°F | 4.5" |
November | 36°F | 50°F | 42°F | 6.6" |
December | 34°F | 45°F | 39°F | 9.5" |
Index | Graham | Washington | National |
Air quality index | 30 | 36 | 42 |
Pollution index | 17,693,800 | 4,541,850 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 323 |
Days with moderate air quality | 42 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.300% |
Carbon Tetrachloride | 0.050% |
Lead | 0.110% |
Mercury | 0.020% |
City | Population | Air Quality Index | National Avg. |
Lakewood, WA | 60,564 | 30 | 40.0% |
Parkland, WA | 37,946 | 30 | 40.0% |
Roy, WA | 814 | 30 | 40.0% |
Clear Lake, WA | 1,101 | 30 | 40.0% |
Midland, WA | 9,518 | 30 | 40.0% |
Graham, WA | 32,505 | 30 | 40.0% |
City | Population | Air Quality Index | National Avg. |
Gillette, WY | 32,513 | 40 | 20.0% |
Laramie, WY | 32,515 | 47 | 6.0% |
Massillon, OH | 32,484 | 46 | 8.0% |
South Riding, VA | 32,526 | 47 | 6.0% |
Okotoks, AB | 32,526 | n/a | |
Graham, WA | 32,505 | 30 | 40.0% |