Cessna 210 Centurion / Turbo Centurion 210C; 210D
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 4
Distraction; Communication Breakdown; Confusion
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance
ATC Equipment / Nav Facility / Buildings; Procedure; Weather
Aircraft X approached ADW from the northeast. Upon initial contact I informed Aircraft X of the weather at DCA as the ATIS code for ADW was showing 'SW' on my IDS and the METAR information for ADW had expired. I called ADW Tower to advise them of the inbound and the mistake on the IDS. Aircraft X advised me of a layer at 2;500 feet that was not shown on the ADW ATIS and requested the ILS 19L. Prior to switching Aircraft X to ADW Tower; I called ADW Tower again and asked them to verify the ATIS with Aircraft X on initial contact as 5-6 minutes had passed since my initial call and request to update the ATIS on the IDS and it was still showing 'SW' as the current ATIS.  I reported this issue the OM on duty and asked that he add it to the log. The lackadaisical approach ADW Tower consistently takes to updating both the METAR and ATIS codes on the midst continues to be an ongoing problem. This is my second ATSAP report on the issue in 6 months. ADW Tower called after the fact to inform me that due to the way their weather reporting system is designed; the METAR info was in fact correct and current. The Tower Controller stated that the METAR information pushes to the TRACON every hour on the hour. Hopefully this is the case and I'm just confused.If I am confused about the specific process that takes place at ADW to push weather info to PCT then I am sure I am not the only person. I would recommend a briefing to the MTV area focusing on the specific nuances of the weather reporting process at ADW Tower and how they differ from how weather gets pushed from DCA to PCT. If this is a case of ADW Tower falling behind in updating the weather information; then I would continue to push that they be held accountable to do their job and push the pertinent weather in a timely manner. During the [Stated] crash; 4 people lost their lives and the weather pushed to PCT by ADW was 4+ hours old. Current weather may have made a difference in the outcome. My last ATSAP on the mid shift operations at ADW involved an ATIS and IDS that advertised an approach to a runway closed for maintenance. Tonight's report may be an over reaction based on past experience with ADW Tower but I do believe this report and its outcome are worth the trouble.
Reporting Controller states there is a problem with the way the Andrews AFB weather gets disseminated.