| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 45°F | 69°F | 56°F | 3.3" |
| February | 46°F | 70°F | 57°F | 2.5" |
| March | 49°F | 73°F | 60°F | 2.0" |
| April | 52°F | 75°F | 62°F | 0.6" |
| May | 56°F | 78°F | 65°F | 0.2" |
| June | 60°F | 83°F | 70°F | 0.0" |
| July | 65°F | 89°F | 75°F | 0.0" |
| August | 65°F | 90°F | 75°F | 0.0" |
| September | 63°F | 89°F | 74°F | 0.2" |
| October | 57°F | 82°F | 68°F | 0.5" |
| November | 50°F | 76°F | 62°F | 0.6" |
| December | 44°F | 68°F | 55°F | 2.1" |
| Index | El Miradero | Glendale | California |
| Air quality index | 72 | 72 | 55 |
| Pollution index | 139,490,000 | 139,490,000 | 10,473,190 |
| 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. |
| Florence-Graham, CA | 64,787 | 72 | 44.0% |
| Commerce, CA | 12,738 | 72 | 44.0% |
| West Whittier-Los Nietos, CA | 26,121 | 72 | 44.0% |
| San Marino, CA | 13,020 | 72 | 44.0% |
| El Monte, CA | 113,917 | 72 | 44.0% |
| Glendale, CA | 199,357 | 72 | 44.0% |
| City | Population | Air Quality Index | National Avg. |
| Aurora, IL | 199,326 | 55 | 10.0% |
| Grand Rapids, MI | 199,417 | 38 | 24.0% |
| Amarillo, TX | 199,225 | 44 | 12.0% |
| Montgomery, AL | 199,054 | 52 | 4.0% |
| Huntington Beach, CA | 199,778 | 72 | 44.0% |
| Glendale, CA | 199,357 | 72 | 44.0% |
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