Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 44°F | 70°F | 56°F | 1.6" |
February | 45°F | 72°F | 57°F | 1.2" |
March | 47°F | 75°F | 60°F | 0.7" |
April | 50°F | 78°F | 63°F | 0.5" |
May | 55°F | 82°F | 66°F | 0.2" |
June | 59°F | 89°F | 72°F | 0.0" |
July | 65°F | 94°F | 77°F | 0.2" |
August | 65°F | 95°F | 78°F | 0.1" |
September | 63°F | 94°F | 76°F | 0.2" |
October | 56°F | 85°F | 69°F | 0.2" |
November | 49°F | 77°F | 62°F | 0.5" |
December | 44°F | 69°F | 55°F | 1.9" |
Index | Arlanza | Riverside | California |
Air quality index | 89 | 89 | 55 |
Pollution index | 22,790,900 | 22,790,900 | 10,473,190 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 42 |
Days with moderate air quality | 178 |
Days w/ poor A.Q. for sensitive groups | 79 |
Days with unhealthy air quality | 58 |
Pollutant | Total |
Arsenic | 0.060% |
Benzene | 0.190% |
Carbon Tetrachloride | 0.010% |
Lead | 0.220% |
Mercury | 0.230% |
City | Population | Air Quality Index | National Avg. |
Bloomington, CA | 21,907 | 89 | 78.0% |
Jurupa Valley, CA | 106,646 | 89 | 78.0% |
Claremont, CA | 35,610 | 89 | 78.0% |
Montclair, CA | 40,041 | 89 | 78.0% |
Upland, CA | 77,348 | 89 | 78.0% |
Riverside, CA | 327,569 | 89 | 78.0% |
City | Population | Air Quality Index | National Avg. |
Corpus Christi, TX | 326,332 | 42 | 16.0% |
Santa Ana, CA | 332,610 | 89 | 78.0% |
Lexington-Fayette, KY | 322,200 | 42 | 16.0% |
Vaughan, ON | 321,974 | n/a | |
Stockton, CA | 311,103 | 45 | 10.0% |
Riverside, CA | 327,569 | 89 | 78.0% |