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on a hike
within 25 miles
May 3, 2026
75 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 Marineair pollutionmobile applicationair pollution monitoringgirl scoutsweather datacommunity-based monitoringequityclimate monitoringcarbon monoxideandroidclimatewinterdataexperimentiphoneautumnusadatabasesmartphone applicationec2020bicyclingsteminvestigationair quality indexsummerparticulate matternatureair qualityspringglobal warmingscienceoutdoorsweatherhikingappcitizen scienceenvironmental justiceairenvironmentclimate changecarbon dioxide
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