Aqi numbers

What is a Code Orange air quality alert? Why is air quality important? Understanding the AQI. An index with numbers can be a quick way to tell people how good or bad something is. On days measuring less than 10 the air is clean.

Local Air Quality Conditions. Very few locations (about of counties) have any days in the very unhealthy or hazardous categories. The air quality index is a piecewise linear function of the pollutant concentration. For example, if the PM2. AQI numbers and colors.

Air quality is satisfactory and poses little or no health risk. The higher the AQI, the greater the level of air pollution and the greater health concern. People who are unusually sensitive to ozone or particle pollution may experience respiratory symptoms. Unhealthy for Sensitive Groups. It transforms complex air quality data of various pollutants into a single number and colour. for air quality forecast and Action Day notifications by city in RSS and CAP formats.

Learn how the City forecasts ozone and particulate matter. The most important number on this scale is 10 since this number corresponds to the standard established under the Clean Air Act. The Air Quality Index describes air quality and associated health effects.

A number of 1corresponds to the federal health standard for that pollutant. SO NOx, Ozone and others. Measurements are taken of particles less than 2. Real-time Air Quality Index numbers for ozone, PM2. PMare available for our monitoring stations on Today’s Air Quality. Daily Air Quality Standard.

The Index numbers represent a ranking for the pollutant, not the measurement of a pollutant. When air quality is expected to be worse — such as during wildfires, which produce elevated levels of particulate matter (PM) — it is important to check hourly readings, which do show the measurement of the pollutant. The Current Air Quality Index (above) applies to the entire county. It reflects the air pollutant with the highest reading in the monitoring network.

The map below provides information for each monitoring site in the network. Currently, all Oregonians live in areas that meet federal air quality standards. Simply put, the higher the value of air pollution, the more catastrophic it’s for health.

Check today’s Air Quality Index. Some people may be more sensitive to air pollution. PM1 temperature, humidity and noise data of your location, city and state.

Respiratory symptoms possible in unusually sensitive individuals, possible aggravation of heart or lung disease in people with cardiopulmonary disease and older adults.