B737-700
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
General None Reported / Taken
Human Factors; Weather
We departed San Diego Runway 9 below minimums of 400' and 1 3/4 visibility. At pushback the ATIS reported weather 400' and 1 3/4 visibility. We were number seven or eight for departure. Visibility from the cockpit was not considered an issue. I was not concerned the weather might be below takeoff mins. Our push to takeoff was 33 minutes. The ATIS changed to 400' and 1 1/4 Visibility. We followed other aircraft in takeoff sequence with the weather unknowingly below mins. I failed to check the airport takeoff minimums page. After takeoff I heard another aircraft challenge the Tower about the minimums for takeoff. I later checked the takeoff minimums chart and recognized my error.Crew must verify takeoff minimums regardless of perceived adequte conditions and not rely on Tower Controller. The Company should add a safety alert on San Diego's unusually high takeoff minimums.
[Report narrative contained no additional information.]
B737-700 flight crew unknowingly departed SAN to the east with the weather below takeoff minimums.