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AQI Forecast by County
Thursday, July 19
Thu Fri
El Dorado
122
108
Placer
119
101
Sacramento
108
101
Yolo-Solano
67
61

Air Quality Map
The map below is a 1-hour snapshot. Click to view all hours recorded since midnight.
Current map


Know What You're Breathing
While enjoying the summer heat, or not, we encourage you to pay attention to the daily air quality forecast and be ready to drive less when a Spare The Air alert is issued. Clean air is up to us!

A Spare The Air alert in the Sacramento region will be issued when the AQI for ground-level ozone pollution is forecast to reach 126 or above.

Sacramento Region Ozone Air Quality Forecast updated by noon
Today (Thu, July 19)
122 AQI - Unhealthy for Sensitive Groups
Tomorrow (Fri, July 20)
108 AQI - Unhealthy for Sensitive Groups

Yesterday's High Extended AQI Outlook
Wed, July 18
129 AQI - Unhealthy for Sensitive Groups
Ozone
Sat, July 21
Unhealthy for Sensitive Groups
Sun, July 22
Moderate
Mon, July 23
Moderate

Air Quality Forecast and Weather Discussion
Wednesday is a Spare The Air Day in the Sacramento region. As an upper-level ridge of high pressure persists, sunny and hot conditions will continue to enhance ozone formation. In addition, light southwesterly winds will limit pollutant dispersion, and smoke from the Ferguson Fire will impact the foothills east of Sacramento. Therefore, ozone levels will be Unhealthy for Sensitive Groups. Thursday, as the upper-level ridge weakens, onshore winds will strengthen slightly, aiding pollutant dispersion. However, mostly sunny skies and very warm temperatures will continue to enhance ozone production in the Sacramento region. In addition, lingering smoke from the Ferguson Fire will continue to impact the region. These conditions will cause ozone levels to be Unhealthy for Sensitive Groups. Friday, light to moderate onshore winds will increase mixing and dispersion. However, warm temperatures and mostly sunny skies will continue to support ozone production, leading to low-Unhealthy for Sensitive Groups ozone levels.