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.
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.
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...
June 7, 2023 Canada wildfire smoke and US air quality news
Jun 7, 2023 · Cities and metro regions across the northeastern United States are experiencing unhealthy air quality, according to data from the US Air Quality Index, as smoke coming from wildfires in...
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
Aug 16, 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. , summarizes the nation's air quality status and trends through 2023.
Wildfire Smoke Smoky Air Disrupts Life in the Northeast - The …
Jun 8, 2023 · The Air Quality Index, which runs from 0 to 500 and measures the density of pollutants, reached 429 near midnight, a level considered “hazardous” to everyone in the city, according to the ...
What to know about the Air Quality Index from wildfire smoke ... - ABC News
Jun 7, 2023 · Heavy blankets of smoke billowing over the U.S. from the wildfires burning in Canada are threatening the health of millions of people -- even non-vulnerable populations with no preexisting conditions.
New WHO Global Air Quality Guidelines aim to save millions of …
Sep 22, 2021 · New WHO Global Air Quality Guidelines (AQGs) provide clear evidence of the damage air pollution inflicts on human health, at even lower concentrations than previously understood. The guidelines recommend new air quality levels to protect the health of populations, by reducing levels of key air pollutants, some of which also contribute to ...
USA Air Quality Index (AQI) and Air Pollution information | IQAir
USA Air Quality Index (AQI). Read the air pollution in USA, get real-time, historical and forecast PM2.5 and weather data with AirVisual.