Resource Management


Contact Information

1855 Placer Street
Redding, CA 96001
Phone: (530) 225-5674
within Shasta County:
   (800) 528-2850
Fax: (530) 225-5237

Office Hours
8:00 am - 5:00 pm
Monday through Friday

Current Air Quality Map

Particulate Matter monitoring is only available at the Anderson location.  Redding and Shasta Lake monitors are ozone only.


HOW TO READ THE AIR QUALITY MAP

The map you see below identifies the permanent, official, air monitoring stations in the north state.

Please Note: Not all air monitoring stations monitor for particulate matter (smoke). In Shasta County, the Anderson station is the only station monitoring for particulate matter (smoke). The Redding and Shasta Lake sites 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 Redding and Shasta Lake when there may be smoke present.

As a result of recent wildfire smoke impacts from fires in Northern California, the California Air Resources Board has deployed additional particulate matter monitors in Redding and Lakehead. They can be accessed through the USFS PM2.5 Monitor site. Please note that this site does not work with Internet Explorer and works best with Chrome or other browsers. You may need to refresh the page to show the monitor data.

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

AQI Data Last Updated 10/15/2018 7:53 AM

What is the AQI?

AQI Logo The 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.