Looking at your RSSI values they are all inside the """blockbusting""", (strong), area.
I am used to working below -120dBm on BWs less the 3KHz wide, often down -130dBm on SSB for...
25dBm for WIFI? That's around 300mW from the PA, (Power Amplifier).
I thought the limit inside the ISM band(s) was 20dBm, 100mW for low powered gear.
However...
That antenna IS...