What's Open?

State Metrics
Substantial (Tier 1)
Daily Case Rate
(7 Day Avg | 4 Day Lag)
Test Positive %
(7 Day Avg | 4 Day Lag)
Healthy Eq. Quartile %
Tests per 100k
(7 Day Avg | 7 Day Lag)


Updates as of 11/16

  • In light of the recent, unprecedented surge in rate of increase of cases, notwithstanding the Blueprint framework outlined below, the following changes are effective until further notice:
  • Tier assignments may occur any day of the week and may occur more than once a week when CDPH determines that the most recent reliable data indicate that immediate action is needed to address COVID-19 transmission in a county.
  • Counties may be moved back more than one tier if CDPH determines that the data support the more intensive intervention. Key considerations will include the rate of increase in new cases and/or test positivity, more recent data as noted below, public health capacity, and other epidemiological factors.
  • The most recent reliable data will be used to complete the assessment.
  • In light of the extreme circumstances requiring immediate action, counties will be required to implement any sector changes the day following the tier announcement.

Moving Through Tiers

  1. CDPH will assess indicators weekly on Mondays and release updated tier assignments on Tuesdays.
  2. A county must remain in a tier for a minimum of three weeks before being able to advance to a less restrictive tier.
  3. A county can only move forward one tier at a time, even if metrics qualify for a more advanced tier.
  4. If a county's adjusted case rate for tier assignment and test positivity measure fall into two different tiers, the county will be assigned to the more restrictive tier.
  5. The health equity metric is applied to jurisdictions with populations greater than 106,000. Rules of the health equity metric are described on the Health Equity Metric page.
  6. City local health jurisdiction (LHJ) data will be included in overall metrics, and city LHJs will be assigned the same tier as the surrounding county
  7. An LHJ may continue to implement or maintain more restrictive public health measures if the local health officer determines that health conditions in that jurisdiction warrant such measures.
  8. Tier status goes into effect the Wednesday following each weekly tier assignment announcement on Tuesdays.

Tier Advancement:

  1. A county must have been in the current tier for a minimum of three weeks.
  2. A county must meet criteria for the next less restrictive tier for both measures for the prior two consecutive weeks in order to progress to the next tier.
  3. In addition, the state will establish health equity measures that demonstrate a county's ability to address the most impacted communities within a county.

Tier Regression:

  1. During the weekly assessment, if a county's adjusted case rate and/or test positivity has fallen within a more restrictive tier for two consecutive weekly periods, the county must revert to the more restrictive tier.
  2. Counties with a population less than 106,000 will have a small county criteria applied to it to ensure movement to a more restrictive tier is appropriate. Description of the small county framework is below.
  3. Counties will have three days, beginning the Wednesday after tier assignments are announced on Tuesdays, to implement any sector changes or closures unless extreme circumstances merit immediate action.