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Cornwall Real-Time AQI Tracker

Get Alerts For Unhealthy AQI In Your Area

When air quality in your area reaches unhealthy levels, we'll send you a quick alert, along with expert tips on how to reduce your exposure.

What's Actually In Cornwall Air Today?

What High AQI Means for Your Lungs in Cornwall

How to Read AQI

The Air Quality Index (AQI) measures how polluted the air is and how it may affect your health.

0–50 (Good): Air quality is satisfactory.

51–100 (Moderate): Acceptable, but some pollutants may pose minor concerns.

101–150 (Unhealthy for Sensitive Groups)

151–200 (Unhealthy)

201–300 (Very Unhealthy)

301+ (Hazardous)

AQI
Exploring Moderate

Moderate

AQI 51–100

Still okay for most, but if you have asthma or allergies, take it easy and avoid long outdoor workouts.

Shop MERV 11 filters→

What's the Right Filter for Your AQI Level?

AQI 0-100

MERV 8 Standard Filtration

Best For:

Everyday dust, pollen, lint

Filters:

Larger particles (3–10 microns)

Recommended for normal air quality days.

Shop MERV 8

AQI 101-150

MERV 11 Superior Filtration

Best For:

Moderate AQI days, urban pollution

Filters:

Fine dust, pet dander, some smoke particles

Helpful during moderate pollution events.

Shop MERV 11
EPA seal

AQI 151+

MERV 13 Optimal Filtration

Best For:

Wildfire smoke & high AQI days

Filters:

Fine particulate matter (PM2.5), smoke, bacteria

The EPA recommends upgrading to MERV 13 (or the highest compatible filter for your system) during wildfire smoke events and high particulate pollution days to help reduce indoor exposure.

Shop MERV 13