Air Quality Index Scale and Color Legend - aqicn.org
Real-time air pollution index for 100+ countries.
Air Quality Index (AQI) | AirNow.gov
Every day the Air Quality Index (AQI) tells you how clean or polluted your outdoor air is, along with associated health effects that may be of concern.
AQI Basics | AirNow.gov
When AQI values are above 100, air quality is unhealthy: at first for certain sensitive groups of people, then for everyone as AQI values get higher. The AQI is divided into six categories. …
Air Quality Index - American Lung Association
Sep 18, 2024 · AQI values at or below 100 are considered satisfactory for almost everyone. When AQI values are above 100, air quality is unhealthy. The higher the number, the more people …
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 …
Patient Exposure and the Air Quality Index - US EPA
Nov 30, 2023 · One of the main functions of the Air Quality Index (AQI) advisories is to notify the public when ozone levels are, or are expected to be, unhealthy, thereby giving people the …
Patient Exposure and the Air Quality Index | US EPA
Oct 4, 2024 · The AQI focuses on health effects that may be experienced within a few hours or days after breathing polluted air and uses a normalized scale from 0 to 500; the higher the AQI …
Unhealthy Air Quality – What To Do | AQI Numbers - University …
Feb 25, 2022 · AQI of 101 to 150 is unhealthy air quality for sensitive groups, such as people with asthma or other lung conditions. People without these conditions usually do not have …
How to use the HeatRisk Tool and Air Quality Index
These tools can provide your patients information to know when hot outdoor temperatures (HeatRisk) or poor air quality (Air Quality Index) may pose a risk to their health. Educating …
Air Quality Index - National Weather Service
The Air Quality Index (AQI) is used for reporting daily air quality. It tells you how clean or polluted your air is, and what associated health effects might be a concern for you. The AQI focuses on …