Current Air Quality Table

Particulate Matter (smoke) monitoring is only available at the Anderson and Redding monitoring stations. The Shasta Lake stations monitor for ozone pollution only. Ozone pollution is different than smoke.

The table you see below identifies the permanent, official, air monitoring stations in the Shasta County.

Smoke vs Ozone

Not all air monitoring stations monitor for particulate matter (smoke). In Shasta County, the Anderson and Redding stations are the only station monitoring for particulate matter (smoke). The Shasta Lake site only monitor for Ozone pollution which is not related to smoke from wildfires. This is why you may see good air quality being indicated for Shasta Lake when there may be smoke present.

Additional Monitors

Additionally, the air district has deployed experimental particulate matter (smoke) sensors throughout Shasta County. These sensors are not official monitors but can be used to help gauge smoke levels in particular locations. When accessing this data, it is advisable to switch the Map Data Layer dialogue box in the lower left hand corner from “None” to “AQ and U”. This will apply a correction factor that will make the readings relate more closely to the official air quality data. They can be accessed at: Purple Air

Monitoring Site Pollutant AQI Category
Anderson OZONE 20 Good
Anderson PM2.5 27 Good
Redding OZONE 21 Good
Redding PM2.5 15 Good
Shasta Lake City OZONE 18 Good
Observed at 2022-07-03 04:00 AM (reported hourly)

What is the AQI?

Air Quality IndexThe AQI is an index 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 health effects you may experience within a few hours or days after breathing polluted air.

Click the categories below to see the health concerns at each AQI level.

Good (0-50)
The AQI value for your community is between 0 and 50. Air quality is considered satisfactory, and air pollution poses little or no risk.
Moderate (51-100)
The AQI for your community is between 51 and 100. Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people. For example, people who are unusually sensitive to ozone may experience respiratory symptoms.
Unhealthy for Sensitive Groups (101-150)
When AQI values are between 101 and 150, members of sensitive groups may experience health effects. This means they are likely to be affected at lower levels than the general public. For example, people with lung disease are at greater risk from exposure to ozone, while people with either lung disease or heart disease are at greater risk from exposure to particle pollution. The general public is not likely to be affected when the AQI is in this range.
Unhealthy (151-200)
Everyone may begin to experience health effects when AQI values are between 151 and 200. Members of sensitive groups may experience more serious health effects.
Very Unhealthy (201-300)
AQI values between 201 and 300 trigger a health alert, meaning everyone may experience more serious health effects.
Hazardous (301+)
AQI values over 300 trigger health warnings of emergency conditions. The entire population is more likely to be affected.