Environment
Witch Hazel Elementary School — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Witch Hazel Elementary School in Hillsboro, Oregon.
Latest Air Quality Index
22
Good · monitor 5.0 km away
PM2.5 annual3.9 µg/m³
Water health violations 10yr0
TRI sites within 1 mi1
Air Quality
EPA AirNow + AQS · 2024
22
AQI latest — Good
22
AQI 7-day avg
3
Days unhealthy in last 90
3.9
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
40.0
Ozone annual ppb
16.7
NO₂ annual ppb
Public Water System
HILLSBORO, CITY OF · PWS OR4101513
0
Health-based violations (10yr)
0
Acute violations (10yr)
92,632
Population served
71
Most recent violation type
2025-07-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
1
TRI sites within 1 mile
37
TRI sites within 5 miles
10.8 mi
Nearest Superfund (NPL)
PORTLAND HARBOR
3.0 mi
Nearest brownfield
FORMER OWEN PROPERTY
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).