Most published references give orders of battles and strengths for a few dates, expanding that to a 5 month period really requires archive documents or a page by page read of books like Mighty Eighth War Diary noting things like first missions.
Bomber Command on 1 January 1944 it had 70 squadrons on strength of which 57.5 were operational, 1,175 aircraft, of which 927 were serviceable, of which 843 had crews, on 31 May it was 80 squadrons, 72.5 operational, 1,604 aircraft, 1,285 serviceable of which 1,267 had crews, a 50% increase in effective numbers. At the start of January 1944, 1 or at most 2 were Halifax III squadrons, the rest were earlier models, end May 20 Halifax III squadrons, Lancaster 33 to 40 operational squadrons, Mosquito Bomber 5 to 6, Mosquito fighter 0 to 4, Stirling 6 Bomber to 2 Radio Counter Measures, Wellington 0.5 to 0. Plus of course its weather and photographic reconnaissance Mosquitoes.
Fighter Command/2nd TAF pulled in squadrons from Canada and the Mediterranean in the first half of 1944, Fighter Command had 60.5 operational squadrons on 1 January 1944, 28 Spitfire, 11 Typhoon, 3 Mustang reconnaissance, 5 Beaufighter, 13 Mosquito, 1,175 aircraft of which 915 were serviceable of which 789 had crews, then add 5 Air Sea Rescue Squadrons strength 101/78/53. 2nd TAF had 58 operational squadrons, 20 Spitfire fighter and 1 reconnaissance, 7 Typhoon, 2 Hurricane, 9 Mustang reconnaissance, 4 Mosquito fighter bomber and 1 reconnaissance, 3 Boston, 4 Mitchell, 7 Auster, 1,016 aircraft, 824 serviceable of which 806 had crews. As well as 1 Halifax and 3 Albemarle transports.
As of 31 May Fighter Command had 53.5 operational squadrons, 1.5 Hurricane, 30 Spitfire, 2 Tempest, 1 Mustang fighter, 2 Typhoon, 2 Beaufighter, 15 Mosquito, 1,094 aircraft, 846 serviceable, 767 with crews, plus 4 Air Sea Rescue squadrons, the overall strength remained about the same. 2nd TAF had 77 operational squadrons, 27 Spitfire fighter and 3 reconnaissance, 17 Typhoon, 5 Mustang fighter and 5 reconnaissance, 6 Mosquito fighter bomber and 1 reconnaissance, 2 Boston, 4 Mitchell, 7 Auster, 1,425 aircraft, 1,145 serviceable of which 1,062 had crews. As well as 2 Halifax, 4 Stirling and 4 Albemarle transports.
From 118.5 operational squadrons to 130.5 effective strength from around 1,600 in January to 1,800 in May.
The USAAF was increasing the number of groups in Britain and also the number of aircraft per group.
On 1 January 1944 the 8th Air Force had operational 18 B-17, 7 B-24, 2 P-38, 9 P-47, 1 Reconnaissance and 1 Pathfinder group, on 31 May that had become 21 B-17, 17 B-24, 4 P-38, 4 P-47, 7 P-51, 1 Reconnaissance group, 1 Pathfinder group, 1 Carpetbagger group, 1 Weather Reconnaissance Group, in both cases plus some independent squadrons.
On 1 January 1944 the 9th Air Force had operational 4 B-26 and 1 P-51 groups, giving an average strength for January of 221 bomber and 58 fighter aircraft with crews, on 31 May it was 8 B-26, 3 A-20, 3 P-38, 14 P-47 and 2 P-51 groups, giving an average strength for May of 545 bomber and 955 fighter aircraft with crews. In both cases again plus some independent squadrons. Not counting transport aircraft groups.
8th Air force on 31 December 1943, serviceable 547 B-17, 153 B-24, 86 P-38, 584 P-47, 12 F-5, 2 Spitfire total 1,384, on 30 May, 974 B-17, 881 B-24, 221 P-38, 246 P-47, 23 P-38 and 12 Spitfire reconnaissance, total 2,719. 9th Air Force on 31 December 1943 223 B-26, 52 P-51, 24 F-6, 20 Spitfire, 13 L-4B, 101 transports, total 433, on 30 May, 389 B-26, 109 A-20, 121 P-38, 733 P-47, 118 P-51, 4 P-61, 33 F-5, 87 F-6, 1,126 transports, total 2,720.
Daily figures fluctuate according to activity, using say weekly or longer gaps runs into that day could be exceptional either up or down. How much detail is really required? Just operational groups for the US and squadrons for the RAF?