Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 36°F | 61°F | 47°F | 0.8" |
February | 39°F | 66°F | 52°F | 0.4" |
March | 45°F | 72°F | 58°F | 0.6" |
April | 50°F | 78°F | 64°F | 0.7" |
May | 56°F | 85°F | 71°F | 0.3" |
June | 67°F | 95°F | 81°F | 0.5" |
July | 68°F | 90°F | 78°F | 3.9" |
August | 66°F | 89°F | 77°F | 3.9" |
September | 62°F | 86°F | 73°F | 2.7" |
October | 54°F | 80°F | 66°F | 0.5" |
November | 44°F | 71°F | 57°F | 0.3" |
December | 36°F | 61°F | 48°F | 0.8" |
Index | St. David | Arizona | National |
Air quality index | 45 | 57 | 50 |
Pollution index | 4,063,380 | 5,576,494 | 5,066,862 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 266 |
Days with moderate air quality | 99 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.004% |
Benzene | 0.060% |
Carbon Tetrachloride | 0.010% |
Lead | 0.040% |
Mercury | 0.001% |
City, State | Population | Air Quality Index | National Avg. |
Benson, AZ | 4,974 | 45 | 10% |
Tombstone, AZ | 1,479 | 45 | 10% |
Dragoon, AZ | 109 | 45 | 10% |
Whetstone, AZ | 2,653 | 45 | 10% |
Pimaco Two, AZ | 615 | 47 | 6% |
St. David, AZ | 1,709 | 45 | 10% |
City, State | Population | Air Quality Index | National Avg. |
Weldon, NC | 1,709 | 36 | 28% |
Warm Springs, CA | 1,709 | 89 | 78% |
Jeffersonville, KY | 1,709 | 33 | 34% |
Glide, OR | 1,710 | 24 | 52% |
Silver Bay, MN | 1,708 | 35 | 30% |
St. David, AZ | 1,709 | 45 | 10% |