Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 18°F | 50°F | 33°F | 0.5" |
February | 23°F | 57°F | 40°F | 0.2" |
March | 29°F | 65°F | 47°F | 0.3" |
April | 35°F | 72°F | 54°F | 0.2" |
May | 43°F | 80°F | 63°F | 0.4" |
June | 54°F | 92°F | 75°F | 0.2" |
July | 62°F | 92°F | 76°F | 1.8" |
August | 59°F | 89°F | 73°F | 2.1" |
September | 51°F | 84°F | 67°F | 1.0" |
October | 38°F | 74°F | 56°F | 0.6" |
November | 27°F | 63°F | 44°F | 0.4" |
December | 21°F | 50°F | 34°F | 0.5" |
Index | St. Johns CDP | Arizona | National |
Air quality index | 44 | 57 | 42 |
Pollution index | 841,255 | 9,766,019 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 294 |
Days with moderate air quality | 70 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.020% |
Carbon Tetrachloride | 0.002% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
St. Johns, AZ | 3,507 | 44 | 12.0% |
Concho, AZ | 0 | 44 | 12.0% |
St. Johns CDP, AZ | 726 | 44 | 12.0% |
City | Population | Air Quality Index | National Avg. |
Salt Creek, CO | 726 | 20 | 60.0% |
Morning Sun, IA | 726 | 32 | 36.0% |
Dieterich, IL | 726 | 40 | 20.0% |
Holland, IN | 726 | 6 | 88.0% |
Calhoun, KY | 726 | 43 | 14.0% |
St. Johns CDP, AZ | 726 | 44 | 12.0% |