PM2.5 at my address

PM2.5 (fine particulate matter) is one of the most important long-term air quality signals. It’s small enough to get deep into the lungs — and it reflects chronic exposure patterns that don’t show up in a single day’s AQI.

PM2.5 varies by region and season. Indoor filtration and time-activity patterns can meaningfully change real exposure. AirScore is informational — not medical advice.

Why PM2.5 matters

PM2.5 is a strong long-term indicator because it captures the “background” air people breathe over months and years — not just an occasional bad day.

Think of it like: AQI is the weather today; PM2.5 is the climate you live in.

Traffic corridors and freight routes can raise local PM2.5.
Industrial activity can contribute depending on emissions and wind.
Wildfire smoke can spike PM2.5 seasonally and change yearly averages.

What you can do

Run AirScore on a few nearby addresses to compare.
Use filtration indoors (HEPA + optional carbon).
Upgrade HVAC filters (MERV 13+ if supported).
Time outdoors away from rush hour and smoke alerts.

Check your address on AirScore → How AirScore works