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Aubrun CA.and Surrounding Area Forecast and Current Conditions
Auburn - Current Air Quality
Current Conditions
Air Quality Index (AQI)
observed at Thu, 20 Jun 2024 12:30:00 PST
Health Message:
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here.
AQI - Pollutant Details

Auburn 6 day - Air Quality Forecast
Today Tomorrow Saturday Sunday Monday
Ozone Ozone Ozone Ozone Ozone
100 115 119 101 90
06/20/2024 06/21/2024 06/22/2024 06/23/2024 06/24/2024
Moderate Unhealthy for Sensitive Groups Unhealthy for Sensitive Groups Unhealthy for Sensitive Groups Moderate
Air Quality Index
1 - 50
51 - 100
101 - 150
Unhealthy for Sensitive Groups
151 - 200
201 - 300
Very Unhealthy
301 - 500
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 Data source Compliments of  Air Now
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      AQI: Air Quality Index
      PM: Pariculate Matter
      PM2.5: size of the particle measured in micrometers
      Pm0.1 (Altra Fine Particles), PM2.5 (Fine Particles) and PM10 (Course Particles) are the 3 main sizes of particles.
      PM2.5 which incudes all sizes up to 2.5 is the most dangerous because it cause more damage to the lung than larger particules. When you cough or swallow your body is trying to get rid of particulate matter that has been trapped in your lung by mucous that was produced for that job. Tiny hairs move the mucous and particles out of the lungs to the back of the throat where you then will cough it out. Smaller particles however, cannot be moved out of the lungs but become trapped by special cells that keep them there. If these toxic particles do become trapped in the lungs, they can cause lung disease, lung cancer, emphysema, etc. Though the smaller particles may cause the most damage to the lungs, both PM2.5 and PM10 can cause a series of respiratory health problems (occurring within the lungs and airway). Due to the fact that PM2.5 is smaller and often much more toxic (metals and cancerous material) than PM10 it causes more damage to the lungs because it travels deeper.
PM10 (course Particules)
  • Smoke, Dirt, and Dust from Factories Farming and Roads
  • Molds, Spores, and Pollen
PM2.5 (Fine Particules)
  • Toxic Organic Compounds (Such as Smog)
  • Heavy metals
These examples of PM2.5 are made by burning fossil fuels, fires, and smelting and processing metals.
Ground-level Ozone
      Definition: Ground level ozone is ozone present as a secondary pollutant in the lower atmosphere, where its formation can be enhanced by other pollutants. It is highly toxic at levels above 0.1 parts per million (p.p.m.).
      Ground level Ozone:
Or Smog is located in the troposphere, or the air closest to the earths surface. Ground-level ozone has the same chemical structure as that of Ozone located higher in the atmosphere. Ground-level Ozone is an air pollutant that damages human health along with crops, trees and other vegitation. Ground-level ozone is formed when two types of pollutants react in the presence of sunlight. This Ozone is created chemically from many factors such as Motor Vehicle Exhaust and Industrial Emissions, Gasoline Vapors, as well as Natural Sources that omit NOx and VOC into the air. Sunlight and warm weather can cause harmfull concentrations in the air which is why Air Quality is particularly dangerous during summer months. The air we breathe is made up of Two oxygen atoms(O2) while Ozone is made up of three oxygen atoms(O3) making it increasingly dangerous to breathe. This is why it is important to monitor the air quality

      Stratosphere Ozone: This is Ozone located 6-30 miles up in the air in the stratosphere. This layer blocks harmful UV rays from reaching the earths surface. See UV radiation Page This is also known as "good Ozone"

Air Quality Guide for Ozone
Air Quality Index Protect Your Health
No health impacts are expected when air quality is in this range.
Unusually sensitive people should consider limiting prolonged outdoor exertion.
Unhealthy for Sensitive Groups
The following groups should limit prolonged outdoor exertion:
  • People with lung disease, such as asthma
  • Children and older adults
  • People who are active outdoors
The following groups should avoid prolonged outdoor exertion:
  • People with lung disease, such as asthma
  • Children and older adults
  • People who are active outdoors
Everyone else should limit prolonged outdoor exertion.
Very Unhealthy
The following groups should avoid all outdoor exertion:
  • People with lung disease, such as asthma
  • Children and older adults
  • People who are active outdoors
Everyone else should limit outdoor exertion.
Health warnings of emergency conditions. The entire population is more likely to be affected.

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