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Weather: Temp RH and Dew Point Tables

  1. Full Set PDF
  2. Elevation 0-500 feet (0-300 feet in Alaska), 30 in.
  3. Elevation 501-1,900 feet (301-1,700 feet in Alaska), 29 in.
  4. Elevation 1,901-3,900 feet (1,701-3,600 feet in Alaska), 27 in.
  5. Elevation 3,901-6,100 feet (3,601-5,700 feet in Alaska), 25 in.
  6. Elevation 6,101-8,500 feet (5,701-7,900 feet in Alaska), 23 in.
  7. Elevation 8,501-11,000 feet (above 7,900 feet in Alaska), 21 in.

The following tables calculate Dew Point and Relative Humidity based on the observed wet bulb and dry bulb temperatures and the elevation at the site of the observation. These can be calculated automatically using Wildland Fire RH Calculator Apps for iOS and Android available for free.

 

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Full Set PDF

Click here to obtain a full set of tables in PDF form. Another available tool is an online Dew Point calculator.

 

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Elevation 0-500 feet (0-300 feet in Alaska), 30 in.

 

Dry Bulb Temp 41-60

Psychometric Tables Pressure 30 in, DB Temp 41-60

 

Dry Bulb Temp 61-80

Psychometric Tables Pressure 30 In Mercury, DB Temp 61-80

 

Dry Bulb Temp 81-100

Psychometric Table, Pressure 30 in, DB Temp 81-100

 

Dry Bulb Temp 101-119

Psychometric Table, Pressure 30 in, DB Temp 81-100

 

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Elevation 501-1,900 feet (301-1,700 feet in Alaska), 29 in.

 

Dry Bulb Temp 41-60

Psychometric Table, Pressure 29 in, DB Temp 41-60

 

Dry Bulb Temp 61-80

Psychometric Table, Pressure 29 in, DB Temp 61-80

 

Dry Bulb Temp 81-100

Psychometric Table, Pressure 29 in, DB Temp 81-100

 

Dry Bulb Temp 101-119

Psychometric Table, Pressure 29 in, DB Temp 101-119

 

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Elevation 1,901-3,900 feet (1,701-3,600 feet in Alaska), 27 in.

 

Dry Bulb Temp 41-60

Psychometric Table, Pressure 27 in, DB Temp 41-60

 

Dry Bulb Temp 61-80

Psychometric Table, Pressure 27 in, DB Temp 61-80

 

Dry Bulb Temp 81-100

Psychometric Table, Pressure 27 in, DB Temp 81-100

 

Dry Bulb Temp 101-119

Psychometric Table, Pressure 27 in, DB Temp 101-119

 

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Elevation 3,901-6,100 feet (3,601-5,700 feet in Alaska), 25 in.

 

Dry Bulb Temp 41-60

Psychometric Table, Pressure 25 in, DB Temp 41-60

 

Dry Bulb Temp 61-80

Psychometric Table, Pressure 25 in, DB Temp 61-80

 

Dry Bulb Temp 81-100

Psychometric Table, Pressure 25 in, DB Temp 81-100

 

Dry Bulb Temp 101-119

Psychometric Tables Pressure 25 in, DB Temp 101-119

 

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Elevation 6,101-8,500 feet (5,701-7,900 feet in Alaska), 23 in.

 

Dry Bulb Temp 31-50

Psychometric Table, Pressure 23 in, DB Temp 31-50

 

Dry Bulb Temp 51-70

Psychometric Table, Pressure 23 in, DB Temp 51-70

 

Dry Bulb Temp 71-90

Psychometric Table, Pressure 23 in, DB Temp 71-90

 

Dry Bulb Temp 91-110

Psychometric Table, Pressure 23 in, DB Temp 91-109

 

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Elevation 8,501-11,000 feet (above 7,900 feet in Alaska), 21 in.

 

Dry Bulb Temp 31-50

Psychometric Table, Pressure 21 in, DB Temp 31-50

 

Dry Bulb Temp 51-70

Psychometric Table, Pressure 21 in, DB Temp 51-70

 

Dry Bulb Temp 71-90

Psychometric Table, Pressure 21 in, DB Temp 71-90

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Questions? 
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NWCG is excited to announce that the Quarter Two materials for the 2025/2026 Wildland Fire Leadership Campaign are now available! This annual initiative invites all leadership and wildland fire management students to engage with essential skills and knowledge needed to lead effectively in dynamic environments.

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NWCG is seeking experienced wildland firefighters and support personnel to serve as Subject Matter Experts (SMEs) for the Incident Performance and Training Modernization (IPTM) initiative. The intent of IPTM is to transition NWCG’s training and qualification system to a performance-based model through updated position descriptions, Incident Position Standards, Next Generation Position Task Books (Next Gen PTBs), and updates to training where needed.

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NWCG is pleased to announce the new M-280, Resource Advisor, Fireline (Instructor-Led) course is now available. This training supports individuals working towards Resource Advisor, Fireline (REAF) incident qualifications.

M-280, Resource Advisor, Fireline (Instructor-Led) training prepares students to serve as a Resource Advisor, Fireline (REAF) as defined in NWCG Incident Position Standards for Resource Advisor, Fireline, PMS 350-112. This course presents scenarios that reflect the diverse challenges a REAF may encounter during an incident. Through these scenarios, participants gain hands-on experience and an understanding of REAF responsibilities in a controlled learning environment.

References:

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The Incident and Position Standards Committee has updated the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1.

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The NWCG Wildland Fire Position Qualification Flowchart, PMS 308 has also been updated to reflect the recent changes.

References:

NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1

NWCG Wildland Fire Position Qualification Flowchart, PMS 308

IPSC Memo 26-01: January 2026 Updates to the NWCG Standards for Wildland Fire Positions Qualifications, PMS 310-1