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hiking
within 25 miles
Apr 4, 2026
149 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 Marineparticulate matteriphoneclimate monitoringweather datanaturehikingautumnequitysummerstemclimate changeair quality indexusacarbon dioxideoutdoorssciencespringexperimentglobal warmingandroidec2020datasmartphone applicationinvestigationcitizen scienceair pollutionweatherwinterenvironmental justiceclimatedatabaseappcarbon monoxidegirl scoutsbicyclingenvironmentcommunity-based monitoringairair qualitymobile applicationair pollution monitoring
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