AirNow.gov
AirNow is your one-stop source for air quality data. Our recently redesigned site highlights air quality in your local area first, while still providing air quality information at state, national, and world views.
Air Quality Index (AQI) | AirNow.gov
Local air quality can affect our daily lives. Like the weather, it can change from day to day. EPA developed the Air Quality Index, or AQI, to make information available about the health effects of the five most common air pollutants, and how to avoid those effects.
World's Air Pollution: Real-time Air Quality Index
Air Quality Index (AQI) Calculation. The Air Quality Index is based on measurement of particulate matter (PM 2.5 and PM 10), Ozone (O 3), Nitrogen Dioxide (NO 2), Sulfur Dioxide (SO 2) and Carbon Monoxide (CO) emissions.
NYC air quality health advisory: What to know - PIX11
5 days ago · The air quality index will likely reach pollution levels of up to 101 to 150, according to NotifyNYC. The higher the AQI, the greater the health concern, the National Weather Service says.
Air quality: Canadian wildfire smoke blankets the U.S. - NBC News
Jun 8, 2023 · The air quality index, or AQI, in New York exceeded 340 Wednesday afternoon — making it the city with worst air quality in the world — as smoke from wildfires in eastern Canada wafted into the...
What is the Air Quality Index? Here's How to Stay Safe - The New York Times
Jun 5, 2024 · What is the Air Quality Index? The Air Quality Index measures the density of five pollutants in the air: ground-level ozone, particulates, carbon monoxide, nitrogen dioxide, and...
What Happens When the Air Quality Index Surpasses 500?
Jun 9, 2023 · New York City’s smoke-clogged air reached 407 on the Environmental Protection Agency’s 500-point Air Quality Index at one point this week, signifying that pollution levels were “hazardous” and at...
Air Quality | US EPA - U.S. Environmental Protection Agency
Oct 28, 2024 · The U.S. Air Quality Index is EPA's index for reporting air quality. Every day the AQI tells you how clean or polluted your outdoor air is, along with associated health effects that may be of concern.
Why air quality is getting worse in many places and how it puts
Apr 6, 2024 · According to a new report, only seven countries met the World Health Organization's air quality guidelines for pollution in 2023.
June 7, 2023 Canada wildfire smoke and US air quality news
Jun 7, 2023 · More than 75 million people across the Northeast, Midwest and mid-Atlantic in the US are under air quality alerts as wildfire smoke originating from Canada shrouds major US cities.