Current air quality in Philadelphia remains dominated by fine particulate matter (PM2.5) transported from extensive Canadian wildfires, primarily in Ontario, pushing real-time AQI readings into the Unhealthy (151–200) and Very Unhealthy (201–300) ranges on July 16–17, 2026, per EPA AirNow and Pennsylvania DEP monitors. Ground-level ozone formation adds secondary pressure during hot, sunny summer conditions. Trader sentiment hinges on smoke-plume forecasts and wind patterns that control dispersion, with clearing dependent on shifts in atmospheric transport and any precipitation. Official NHC/NOAA and state alerts, plus updated AirNow NowCast data, provide the key near-term signals for when levels may drop into the Moderate category (AQI 51–100).
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedPhiladelphia Air Quality Index below 100 by...?
Philadelphia Air Quality Index below 100 by...?
$7,591 Vol.
Jul 18, 2026
July 18
No
July 19
Yes
July 20
Yes
July 21
Yes
$7,591 Vol.
July 18
$3,087 Vol.
No
July 19
$1,811 Vol.
Yes
July 20
$1,866 Vol.
Yes
July 21
$827 Vol.
Yes
This market will resolve to "Yes" if "Philadelphia" has a PM2.5 Air Quality Index of below 100 between July 17, 2026 and the specified date. Otherwise, this market will resolve to "No".
This market's resolution source will be https://www.airnow.gov/state/?name=pennsylvania. To get to the figures used to resolve this market, select the "Historical Air Quality" tab, then find the finalized figure in the "Philadelphia" row under the "Daily AQI for PM2.5" column.
This market may remain open for two days after the specified date to confirm the daily AQI figures for the specified timeframe. If the figures remain unavailable, another credible resolution source will be chosen.Current air quality in Philadelphia remains dominated by fine particulate matter (PM2.5) transported from extensive Canadian wildfires, primarily in Ontario, pushing real-time AQI readings into the Unhealthy (151–200) and Very Unhealthy (201–300) ranges on July 16–17, 2026, per EPA AirNow and Pennsylvania DEP monitors. Ground-level ozone formation adds secondary pressure during hot, sunny summer conditions. Trader sentiment hinges on smoke-plume forecasts and wind patterns that control dispersion, with clearing dependent on shifts in atmospheric transport and any precipitation. Official NHC/NOAA and state alerts, plus updated AirNow NowCast data, provide the key near-term signals for when levels may drop into the Moderate category (AQI 51–100).
This market will resolve to "Yes" if "Philadelphia" has a PM2.5 Air Quality Index of below 100 between July 17, 2026 and the specified date. Otherwise, this market will resolve to "No".
This market's resolution source will be https://www.airnow.gov/state/?name=pennsylvania. To get to the figures used to resolve this market, select the "Historical Air Quality" tab, then find the finalized figure in the "Philadelphia" row under the "Daily AQI for PM2.5" column.
This market may remain open for two days after the specified date to confirm the daily AQI figures for the specified timeframe. If the figures remain unavailable, another credible resolution source will be chosen.
This market's resolution source will be https://www.airnow.gov/state/?name=pennsylvania. To get to the figures used to resolve this market, select the "Historical Air Quality" tab, then find the finalized figure in the "Philadelphia" row under the "Daily AQI for PM2.5" column.
This market may remain open for two days after the specified date to confirm the daily AQI figures for the specified timeframe. If the figures remain unavailable, another credible resolution source will be chosen.
Market Opened: Jul 17, 2026, 12:36 PM ET
Volume
$7,591End Date
Jul 21, 2026Market Opened
Jul 17, 2026, 12:36 PM ETResolution Source
https://www.airnow.gov/state/?name=pennsylvaniaResolver
0x65070BE91...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to "Yes" if "Philadelphia" has a PM2.5 Air Quality Index of below 100 between July 17, 2026 and the specified date. Otherwise, this market will resolve to "No".
This market's resolution source will be https://www.airnow.gov/state/?name=pennsylvania. To get to the figures used to resolve this market, select the "Historical Air Quality" tab, then find the finalized figure in the "Philadelphia" row under the "Daily AQI for PM2.5" column.
This market may remain open for two days after the specified date to confirm the daily AQI figures for the specified timeframe. If the figures remain unavailable, another credible resolution source will be chosen.Current air quality in Philadelphia remains dominated by fine particulate matter (PM2.5) transported from extensive Canadian wildfires, primarily in Ontario, pushing real-time AQI readings into the Unhealthy (151–200) and Very Unhealthy (201–300) ranges on July 16–17, 2026, per EPA AirNow and Pennsylvania DEP monitors. Ground-level ozone formation adds secondary pressure during hot, sunny summer conditions. Trader sentiment hinges on smoke-plume forecasts and wind patterns that control dispersion, with clearing dependent on shifts in atmospheric transport and any precipitation. Official NHC/NOAA and state alerts, plus updated AirNow NowCast data, provide the key near-term signals for when levels may drop into the Moderate category (AQI 51–100).
This market will resolve to "Yes" if "Philadelphia" has a PM2.5 Air Quality Index of below 100 between July 17, 2026 and the specified date. Otherwise, this market will resolve to "No".
This market's resolution source will be https://www.airnow.gov/state/?name=pennsylvania. To get to the figures used to resolve this market, select the "Historical Air Quality" tab, then find the finalized figure in the "Philadelphia" row under the "Daily AQI for PM2.5" column.
This market may remain open for two days after the specified date to confirm the daily AQI figures for the specified timeframe. If the figures remain unavailable, another credible resolution source will be chosen.
This market's resolution source will be https://www.airnow.gov/state/?name=pennsylvania. To get to the figures used to resolve this market, select the "Historical Air Quality" tab, then find the finalized figure in the "Philadelphia" row under the "Daily AQI for PM2.5" column.
This market may remain open for two days after the specified date to confirm the daily AQI figures for the specified timeframe. If the figures remain unavailable, another credible resolution source will be chosen.
Volume
$7,591End Date
Jul 21, 2026Market Opened
Jul 17, 2026, 12:36 PM ETResolution Source
https://www.airnow.gov/state/?name=pennsylvaniaResolver
0x65070BE91...Outcome proposed: No
No dispute
Final outcome: No
Current air quality in Philadelphia remains dominated by fine particulate matter (PM2.5) transported from extensive Canadian wildfires, primarily in Ontario, pushing real-time AQI readings into the Unhealthy (151–200) and Very Unhealthy (201–300) ranges on July 16–17, 2026, per EPA AirNow and Pennsylvania DEP monitors. Ground-level ozone formation adds secondary pressure during hot, sunny summer conditions. Trader sentiment hinges on smoke-plume forecasts and wind patterns that control dispersion, with clearing dependent on shifts in atmospheric transport and any precipitation. Official NHC/NOAA and state alerts, plus updated AirNow NowCast data, provide the key near-term signals for when levels may drop into the Moderate category (AQI 51–100).
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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