Air Quality Across America
Real-time EPA Air Quality Index (AQI) monitoring for major US cities. Understand local pollution levels and find affordable indoor air solutions.
Understanding the EPA AQI
Select Your City
New York
NY
Pop: 8,336,000
Los Angeles
CA
Pop: 3,979,000
Chicago
IL
Pop: 2,693,000
Houston
TX
Pop: 2,320,000
Phoenix
AZ
Pop: 1,680,000
Philadelphia
PA
Pop: 1,584,000
San Antonio
TX
Pop: 1,547,000
San Diego
CA
Pop: 1,423,000
Dallas
TX
Pop: 1,304,000
San Jose
CA
Pop: 1,014,000
Austin
TX
Pop: 978,000
San Francisco
CA
Pop: 874,000
Seattle
WA
Pop: 737,000
Denver
CO
Pop: 716,000
Boston
MA
Pop: 685,000
Miami
FL
Pop: 467,000
Atlanta
GA
Pop: 498,000
Portland
OR
Pop: 652,000
Las Vegas
NV
Pop: 641,000
Detroit
MI
Pop: 639,000
Minneapolis
MN
Pop: 429,000
Tampa
FL
Pop: 387,000
Orlando
FL
Pop: 307,000
Charlotte
NC
Pop: 879,000
Raleigh
NC
Pop: 467,000
Nashville
TN
Pop: 689,000
Salt Lake City
UT
Pop: 200,000
Pittsburgh
PA
Pop: 302,000
Cleveland
OH
Pop: 372,000
Indianapolis
IN
Pop: 887,000
Sacramento
CA
Pop: 524,000
Kansas City
MO
Pop: 508,000
Baltimore
MD
Pop: 576,000
Milwaukee
WI
Pop: 577,000
Albuquerque
NM
Pop: 564,000
Toronto
ON
Pop: 2,794,000
Vancouver
BC
Pop: 675,000
Montreal
QC
Pop: 1,780,000
Calgary
AB
Pop: 1,306,000
Ottawa
ON
Pop: 1,017,000
Edmonton
AB
Pop: 1,010,000
Winnipeg
MB
Pop: 749,000
Quebec City
QC
Pop: 549,000
Hamilton
ON
Pop: 569,000
Victoria
BC
Pop: 92,000
US Air Quality Regulations
Clean Air Act
The EPA sets National Ambient Air Quality Standards (NAAQS) for six criteria pollutants. States develop implementation plans to meet these standards and improve local air quality.
State Programs
California leads with CARB emission standards. Other states have vehicle inspection programs, industrial permits, and local air quality management districts.
Live AQI on Mobile
Get instant air quality readings for your city. Fast-loading mobile app with real-time AQI, product comparisons, and buyer's guides optimized for on-the-go access.
California Air Quality Deep Dive
California has America's strictest air quality standards (CARB) but also faces unique challenges from wildfire smoke, the Central Valley, and LA Basin smog. Get specialized guidance for the Golden State.
Wildfire Smoke Preparedness
Wildfires increasingly affect air quality across the US, particularly in the West. Having a HEPA air purifier ready can protect your family during smoke events.
Smoke can travel 1000+ miles
Indoor air 2-5x worse without filtration
HEPA removes 99.97% of particles
DIY Air Purifiers for America
HEPA & MERV air purifiers from $149. Free shipping across the continental US.
Shop Clean Air Kits USA →