Flood zone: it depends on the exact parcel
There is no such thing as a flood zone for a whole city. Two houses on the same street can sit in different zones, and it is the single fact here that changes most over a short distance. So this page does not guess one.
Earthquake hazard very-high
Design category D
Very high seismic hazard — at or near a major active fault. Very strong ground shaking is likely and the most stringent seismic-design provisions apply. A site-specific ground-motion study is typically required. The ASCE 7 Seismic Design Category here is D. (Short-period design value Ss ≈ 1.5 g — the standard headline measure of ground-shaking hazard.)
USGS Seismic Design Web Services (ASCE 7), assuming Site Class D — stiff or unknown soil. Real soil conditions can move the category either way.
Typical weather
92.4° in August, 41.5° in December
Thirty-year averages, not a forecast. Any individual year can differ substantially.
| Month | High | Low | Rain | Snow |
|---|---|---|---|---|
| Jan | 67.9° | 43.1° | 2.91" | 0" |
| Feb | 67.3° | 44.5° | 4.15" | 0" |
| Mar | 72° | 47° | 2.12" | 0" |
| Apr | 75.8° | 49.6° | 0.97" | 0" |
| May | 78.4° | 54° | 0.22" | 0" |
| Jun | 84.3° | 57.2° | 0.06" | 0" |
| Jul | 90.3° | 62.3° | 0" | 0" |
| Aug | 92.4° | 62.7° | 0.03" | 0" |
| Sep | 88.7° | 60.4° | 0.01" | 0" |
| Oct | 80.5° | 53.9° | 0.97" | 0" |
| Nov | 73.5° | 47° | 0.74" | 0" |
| Dec | 66.9° | 41.5° | 2.29" | 0" |
NOAA/NCEI 1991–2020 U.S. Climate Normals — station POMONA/FAIRPLEX, CA US, 10.2 mi away.
Growing season zone 10a
365 frost-free days
Last spring frost around n/a, first fall frost around n/a. Roughly half of years see frost outside that window.
2023 USDA Plant Hardiness Zone Map and NOAA/NCEI 1991–2020 frost normals.
What this page does not tell you
- Nothing about a specific property — only the area around it.
- No flood zone, deliberately: that is parcel-level and this page would have to guess.
- Nothing about wildfire, radon, subsidence, soil or the building itself.
- Climate normals describe a typical year, not the year you are about to have.