| Category | Ceiling | Visibility | |
|---|---|---|---|
| Low Instrument Flight Rules LIFR* (magenta sky symbol) |
below 500 feet AGL | and/or | less than 1 mile |
| Instrument Flight Rules IFR (red sky symbol) |
500 to below 1,000 feet AGL | and/or | 1 mile to less than 3 miles |
| Marginal Visual Flight Rules MVFR (blue sky symbol) |
1,000 to 3,000 feet AGL | and/or | 3 to 5 miles |
| Visual Flight Rules VFR+ (green sky symbol) |
greater than 3,000 feet AGL | and | greater than 5 miles |
| *By
definition, IFR is ceiling less than 1,000 feet AGL and/or
visibility less than 3 miles while LIFR is a sub-category of IFR. +By definition, VFR is ceiling greater than or equal to 3,000 feet AGL and visibility greater than or equal to 5 miles while MVFR is a sub-category of VFR. |
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