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.
Current air quality conditions - Minnesota Pollution Control Agency
The MPCA's Air Quality Index tool displays the reported AQI for fine particulates (PM2.5) and ozone at monitors located across Minnesota.
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...
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 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.
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.
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 ...
The Air Quality Index and how to use it, explained - Vox
Jun 28, 2023 · The Air Quality Index, set by the Environmental Protection Agency, is your guide to how bad the air quality is outdoors. The data that goes into the Air Quality Index comes from 5,000 air...
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...