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on a hike
within 25 miles
Dec 28, 2025
59 opportunities found! use fewer search filter criteria to find more opportunities

2B Technologies, Inc.

AQTreks (AirQualityTreks)

Monitor air pollution levels and map air pollution around the US

Multiple locations, including yours!

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Citizen ScienceNature & OutdoorsGeographyEducationCrowd FundingTransportationEcology & EnvironmentComputers & TechnologyClimate & WeatherChemistryOcean Water Marineautumncommunity-based monitoringstemoutdoorsglobal warmingwinterandroidclimateusaairenvironmentweatherair pollutionscienceair qualitybicyclingsummerhikingcarbon monoxidespringiphoneclimate changegirl scoutscarbon dioxidedatabaseclimate monitoringparticulate mattersmartphone applicationweather dataenvironmental justicecitizen scienceec2020equityair pollution monitoringinvestigationexperimentdataair quality indexappmobile applicationnature
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