Environment
Walnut Elementary — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Walnut Elementary in Walnut, California.
Latest Air Quality Index
58
Moderate · monitor 19.8 km away
PM2.5 annual12.6 µg/m³
Water health violations 10yr0
TRI sites within 1 mi8
Air Quality
EPA AirNow + AQS · 2024
58
AQI latest — Moderate
58
AQI 7-day avg
3
Days unhealthy in last 90
12.6
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
64.3
Ozone annual ppb
29.4
NO₂ annual ppb
Public Water System
WALNUT VALLEY WATER DISTRICT · PWS CA1910234
0
Health-based violations (10yr)
0
Acute violations (10yr)
100,941
Population served
—
Most recent violation type
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
8
TRI sites within 1 mile
52
TRI sites within 5 miles
6.1 mi
Nearest Superfund (NPL)
SAN GABRIEL VALLEY AREA 4
4.2 mi
Nearest brownfield
WEST COVINA SPORTSPLEX SITE
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).