Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 37°F | 58°F | 46°F | 8.6" |
February | 40°F | 63°F | 50°F | 6.8" |
March | 43°F | 67°F | 54°F | 6.5" |
April | 46°F | 72°F | 58°F | 4.4" |
May | 51°F | 79°F | 63°F | 2.6" |
June | 55°F | 87°F | 69°F | 5.0" |
July | 57°F | 90°F | 71°F | 3.3" |
August | 57°F | 89°F | 70°F | 3.3" |
September | 55°F | 89°F | 69°F | 4.3" |
October | 49°F | 79°F | 63°F | 5.1" |
November | 42°F | 67°F | 53°F | 4.2" |
December | 36°F | 58°F | 46°F | 6.4" |
Index | Rio Vista | California | National |
Air quality index | 45 | 55 | 42 |
Pollution index | 2,457,150 | 10,473,190 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 229 |
Days with moderate air quality | 123 |
Days w/ poor A.Q. for sensitive groups | 12 |
Days with unhealthy air quality | 1 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.080% |
Carbon Tetrachloride | 0.002% |
Lead | 0.010% |
Mercury | 0.020% |
City | Population | Air Quality Index | National Avg. |
Elmira, CA | 234 | 35 | 30.0% |
Vacaville, CA | 99,958 | 35 | 30.0% |
Bay Point, CA | 25,378 | 40 | 20.0% |
Pittsburg, CA | 71,723 | 40 | 20.0% |
Antioch, CA | 111,468 | 45 | 10.0% |
Rio Vista, CA | 9,407 | 45 | 10.0% |
City | Population | Air Quality Index | National Avg. |
Atoka, TN | 9,407 | 45 | 10.0% |
Country Club Estates, GA | 9,408 | 36 | 28.0% |
Middletown, PA | 9,410 | 44 | 12.0% |
Pryor Creek, OK | 9,417 | 36 | 28.0% |
Cairo, GA | 9,395 | 40 | 20.0% |
Rio Vista, CA | 9,407 | 45 | 10.0% |