Environment
Harper Elem School — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Harper Elem School in Wilmette, Illinois.
Latest Air Quality Index
36
Good · monitor 8.1 km away
PM2.5 annual7.3 µg/m³
Water health violations 10yr0
TRI sites within 1 mi0
Air Quality
EPA AirNow + AQS · 2024
36
AQI latest — Good
36
AQI 7-day avg
0
Days unhealthy in last 90
7.3
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
51.3
Ozone annual ppb
16.0
NO₂ annual ppb
Public Water System
WILMETTE · PWS IL0313300
0
Health-based violations (10yr)
0
Acute violations (10yr)
27,087
Population served
27
Most recent violation type
2025-10-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
0
TRI sites within 1 mile
49
TRI sites within 5 miles
19.9 mi
Nearest Superfund (NPL)
OUTBOARD MARINE CORP
3.0 mi
Nearest brownfield
1600 FOSTER AVENUE
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).