**Recent heat wave conditions and Pakistan Meteorological Department forecasts around 38°C are anchoring trader sentiment for Karachi’s September 22 maximum, with 38°C and 39°C outcomes nearly tied at 35.5% and 34.0% implied probability.** Persistent circulation over the Arabian Sea has weakened the typical southwesterly sea breeze that normally moderates coastal temperatures, allowing stronger daytime heating under mostly sunny skies and west-to-southwest winds of 10–15 mph. High humidity near 50–65% during peak hours elevates the heat index several degrees above air temperature, while model consensus points to a narrow afternoon peak near 38°C before gradual easing. Historical September extremes (prior high of 40.5°C in 2017) and station variations across the city add uncertainty, with traders closely watching updated PMD guidance and real-time observations for any late-day surge or breeze strengthening that could tip the daily high between 38°C and 39°C.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Karachi on September 22?
38°C 34%
39°C 34%
37°C 21%
40°C 12%
$18,447 Vol.
$18,447 Vol.
31°C or below
<1%
32°C
<1%
33°C
<1%
34°C
<1%
35°C
1%
36°C
1%
37°C
21%
38°C
34%
39°C
34%
40°C
12%
41°C or higher
2%
38°C 34%
39°C 34%
37°C 21%
40°C 12%
$18,447 Vol.
$18,447 Vol.
31°C or below
<1%
32°C
<1%
33°C
<1%
34°C
<1%
35°C
1%
36°C
1%
37°C
21%
38°C
34%
39°C
34%
40°C
12%
41°C or higher
2%
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=opkc
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Sep 20, 2026, 12:59 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=opkcResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=opkc
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=opkcResolver
0x69c47De9D...**Recent heat wave conditions and Pakistan Meteorological Department forecasts around 38°C are anchoring trader sentiment for Karachi’s September 22 maximum, with 38°C and 39°C outcomes nearly tied at 35.5% and 34.0% implied probability.** Persistent circulation over the Arabian Sea has weakened the typical southwesterly sea breeze that normally moderates coastal temperatures, allowing stronger daytime heating under mostly sunny skies and west-to-southwest winds of 10–15 mph. High humidity near 50–65% during peak hours elevates the heat index several degrees above air temperature, while model consensus points to a narrow afternoon peak near 38°C before gradual easing. Historical September extremes (prior high of 40.5°C in 2017) and station variations across the city add uncertainty, with traders closely watching updated PMD guidance and real-time observations for any late-day surge or breeze strengthening that could tip the daily high between 38°C and 39°C.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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