Agricultural Burning
Fire
Marshall Conditions?
(≥95°,  ≥15mph, ≤30% RH)
	No
Significant
Potential for Open
Burn?
	No
Portland
Clean Air Action
Day?
	No
Political
Considerations?
(Holiday, Weekend, etc)
	No
Mixing
Height
Stays below 3000'?
	No
Agricultural			No Agricultural Burning
Burning Allowed
Start latest of
3000' mixing height reached
RH ≤ 60%
End earliest of
Mixing height goes below 3000'
RH goes above 60%
1/2 hour before sunset