Air Quality Index - Resource Guide
Fresno State
Each fall the air quality in the Central Valley often rises to unhealthy levels. This guide is intended to be a year-to-year reference of the threshold for when the University plans to communicate with the campus community, and when to begin to restrict activities up to and including cancelling classes and closing the campus with the exception of essential operations necessary to protect campus property and resources.
Resources
Fresno State monitors AirNow.com for the 93740 zip code. The closest monitoring station to the campus is located on Villa Ave. just east of the campus.
Index Scale and Guidance
| Air Quality Index Scale | Communication | Action | |
|---|---|---|---|
| Index | Air Quality | ||
| 0 - 50 | Good | No | N/A |
| 51 - 100 | Moderate | No | N/A |
| 101 - 150 | Unhealthy for Sensitive Groups (USG) | No | N/A |
| 151 - 200 | Unhealthy | Yes, if prolonged hours | Monitor |
| 201 - 300 | Very Unhealthy | Yes | Reduce outdoor activity |
| 301 - 500 | Hazardous | Yes | Cancel class, essential outdoor operations only |
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