Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 45°F | 62°F | 52°F | 19.1" |
February | 46°F | 65°F | 54°F | 5.8" |
March | 47°F | 69°F | 56°F | 3.2" |
April | 47°F | 73°F | 58°F | 3.0" |
May | 53°F | 79°F | 64°F | 0.6" |
June | 59°F | 87°F | 71°F | 0.0" |
July | 65°F | 96°F | 79°F | 0.0" |
August | 63°F | 94°F | 76°F | 0.0" |
September | 61°F | 90°F | 74°F | 28.1" |
October | 57°F | 81°F | 67°F | 5.9" |
November | 53°F | 74°F | 61°F | 1.3" |
December | 44°F | 63°F | 52°F | 4.0" |
Index | Stevenson Ranch | California | National |
Air quality index | 72 | 55 | 42 |
Pollution index | 139,490,000 | 10,473,190 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 66 |
Days with moderate air quality | 208 |
Days w/ poor A.Q. for sensitive groups | 62 |
Days with unhealthy air quality | 28 |
Pollutant | Total |
Arsenic | 0.200% |
Benzene | 0.950% |
Carbon Tetrachloride | 0.080% |
Lead | 1.320% |
Mercury | 0.440% |
City | Population | Air Quality Index | National Avg. |
Thousand Oaks, CA | 127,648 | 46 | 8.0% |
Piru, CA | 2,126 | 46 | 8.0% |
Simi Valley, CA | 125,768 | 72 | 44.0% |
Castaic, CA | 18,479 | 72 | 44.0% |
Burbank, CA | 103,411 | 72 | 44.0% |
Stevenson Ranch, CA | 18,980 | 72 | 44.0% |
City | Population | Air Quality Index | National Avg. |
Cimarron Hills, CO | 18,981 | 45 | 10.0% |
Altamont, OR | 18,982 | 29 | 42.0% |
Lexington, NC | 18,970 | 40 | 20.0% |
Troy, AL | 18,995 | 52 | 4.0% |
Sainte-Catherine, QC | 19,000 | n/a | |
Stevenson Ranch, CA | 18,980 | 72 | 44.0% |