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Air Quality Update:

Update on campus weekend activities and operations 

Nov. 16, 5:45 p.m.

As of 5 p.m. today (Nov. 16), the PM2.5 in Merced is at “very unhealthy” levels, and the San Joaquin Valley Air Pollution District recommends everyone avoid outdoor activities.

Air quality can change dramatically hour to hour based on wind patterns and other environmental factors, but we are hopeful that normal campus operations will resume on Monday, Nov. 19. A determination will be made by approximately 5 p.m. Sunday, Nov. 18, or sooner if warranted by reliable longer-range air quality predictions.

Click here for updates on campus activities and operations through the weekend

All campus locations are closed and classes are canceled for Friday, Nov. 16. 

Nov. 15, 8:45 p.m.

After ongoing consultation with campus leadership and Merced County Public Health officials, we have determined that classes will be canceled Friday, Nov. 16, and the campus will be closed except for essential operations such as dining and housing. The health center will be open in the morning, and anyone experiencing respiratory issues is encouraged to call 911.

We expect to resume normal operations on Monday, Nov. 19, but we will inform the campus community of any updates.

Read Chancellor Leland's message to campus

All campus locations are closed and classes are canceled for the rest of today (Nov. 15). 

Nov. 15, 1:15 p.m.

Current data shows increasingly poor air quality, and in consultation with campus leadership and Merced County Public Health officials, classes are canceled and all campus locations are closed for today, Nov. 15.
Essential staff should check with their supervisor regarding campus operations.
Members of the campus community are encouraged to remain indoors, and avoid any prolonged activity outdoors. Conditions can be particularly harmful for those with sensitive health conditions, children or elderly people.
We will continue to monitor air quality and provide further updates.

Read campus closure message to campus

Nov. 15, 10:30 a.m.

At this time, our Air Quality Index (AQI) is 34, which is considered moderate.

The air pollution district yesterday had forecasted an AQI above 150 for the Merced area, but our actual AQI remains far below that estimate at this time. Therefore, the campus remains open and classes are not canceled. As mentioned earlier, outdoor activities have been canceled.

Those concerned about changes to air quality throughout the day can find hourly updates from the San Joaquin Valley Air Pollution Control District. Please note that other websites and pages contain information that might not be accurate or current.

Read updated message to the campus

Nov. 15, 7:30 a.m.

As of 6 a.m. today the AQI in the Merced area is in the range of 20-30; in the Turlock area, it remains over 100, and it is significantly higher in the Davis/Sacramento area. These numbers do fluctuate, though, and those with heart conditions and respiratory disorders should take caution. Others should avoid prolonged outdoor activity.

Any significant impacts to the campus will be posted to, and the UCM Alert notification system will be activated.

Read Chancellor Leland's message to the campus



UCM Alert graphic