Pakistan Meteorological Department forecasts for June 8–12 project maximum temperatures of 40–43°C across Karachi amid persistent heatwave conditions driven by high-pressure systems and above-normal seasonal baselines. Model consensus and historical June climatology, with typical daytime peaks near 36–38°C but elevated this year by several degrees, underpin the market's near-certain positioning at 40°C. Recent observational trends, including current afternoon readings climbing toward the upper 30s Celsius with high humidity amplifying feels-like values, reinforce trader alignment around this threshold. Only substantial late-day cooling from unexpected cloud cover, wind shifts, or measurement revisions at official stations could realistically shift the recorded high outside the 40°C bin.