Everything you need to know before moving to Centreville VA 20121. Demographics, public and private schools, FBI / state crime stats, air quality, climate, and top-rated restaurants. Live data from public APIs - no signup, no email required.
Building your report…
Pulling live demographics, crime stats, air quality, and climate.
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Public schools: NCES Common Core of Data 2024-25. Private schools: NCES Private School Survey 2021-22 (newest released, biennial).
Air Quality
Clean Air
EPA US AQI
39
The EPA's overall Air Quality Index. 0-50 good, 51-100 moderate, 101+ starts being unhealthy for sensitive groups.
Nat'l avg: 50
Clean
PM2.5
6.1 µg/m³
Tiny particles from car exhaust, fires, and dust that get deep into your lungs. Lower is healthier. EPA's safe limit is 9.
Nat'l avg: 9 µg/m³
Clean
PM10
7.1 µg/m³
Coarser airborne particles like dust and pollen. WHO considers under 15 µg/m³ healthy.
Nat'l avg: 15 µg/m³
Low Ozone
Ozone
61 µg/m³
Ground-level ozone, the main ingredient in smog. Spikes on hot, sunny days.
Nat'l avg: 100 µg/m³
Low NO2
NO₂
3.6 µg/m³
Nitrogen dioxide, mostly from car exhaust. Higher near busy roads and highways.
Nat'l avg: 10 µg/m³
Low CO
Carbon Monoxide
126 µg/m³
Carbon monoxide from cars, gas heaters, and fires. Outdoor levels in residential areas usually run well below safety limits.
Nat'l avg: 4000 µg/m³
Climate (3-yr avg)
Hot
Summer Avg High
86.6°F
How hot a typical summer afternoon gets. Personal taste. Some love it warm.
Mild
Winter Avg Low
31.3°F
How cold a typical winter night gets. Below freezing means real winters.
Comfortable
Annual Rainfall
35.7"
Total inches of rain per year. U.S. average is around 30 inches.
Minimal
Annual Snowfall
3.2"
Average inches of snow per year. 0-5 mild, 30+ serious winter, shoveling weather.
Hot Often
Days ≥ 90°F / yr
30
How many days a year feel sweltering. More days = bigger AC bills.
Some Freezes
Days ≤ 32°F / yr
59
How many days a year hit freezing. More days = bigger heating bills and icy mornings.
Annual Avg High
67.6°F
Average daily high across the year. Useful one-number summary of how warm the area runs.
Annual Avg Low
49.4°F
Average daily low across the year. Together with the high, gives you the typical temperature swing.
Data sources: ZIP geocoding via Zippopotam, demographics from the U.S. Census Bureau's ACS 5-year survey (2022), air quality and climate from Open-Meteo, restaurants from Google Places (powered by Google). National averages from ACS 2022. Census numbers reflect a rolling 5-year average. Air quality reflects the most recent hourly observation. Climate averages cover the 3 most recent calendar years. Restaurant data filtered to 1,000+ reviews within 5 miles. Verify with local sources before making relocation decisions.
