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within 25 miles

Feb 9, 2026

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2B Technologies, Inc.

AQTreks (AirQualityTreks)

Monitor air pollution levels and map air pollution around the US

Multiple locations, including yours!

Ongoing

Citizen ScienceNature & OutdoorsGeographyEducationCrowd FundingTransportationEcology & EnvironmentComputers & TechnologyClimate & WeatherChemistryOcean Water Marineairparticulate matterweather datamobile applicationclimate monitoringnaturecitizen sciencecarbon dioxideequityautumnscienceoutdoorsinvestigationcarbon monoxideec2020springweatherbicyclingair quality indexandroidgirl scoutsdatacommunity-based monitoringenvironmentsummerair pollution monitoringiphonestemclimate changeappclimateair qualityhikingglobal warmingair pollutionwintersmartphone applicationdatabaseexperimentenvironmental justiceusa

NC State University | ecoipm.org | YourWildLife.org

A Tree's Life

To learn how climate & urbanization affect tree growth & health

Multiple locations, including yours!

Ongoing

Citizen ScienceBiologyEducationClimate & WeatherNature & OutdoorsEcology & Environmenttreesurban ecologycarbon sequestrationclimate change

Dr. Kevin Gurney

Hestia Traffic App

To improve the data of on-road CO2 emissions

Multiple locations, including yours!

Ongoing

Citizen ScienceClimate & WeatherEcology & EnvironmentTransportationpollutionemmisionclimate

TreeMama.org

iSeaTree

Help resource managers study and record the benefits of urban trees!

Multiple locations, including yours!

Ongoing

Citizen ScienceEcology & EnvironmentNature & OutdoorsGeographyco2leafcarbonurban treesplantipadurbancanopymapscitieswoodsiphoneandroidchangeidentificationparkartificial intelligencetreeappcityh2otreesclimateforestclimate changeai

It's TreeTime Tempe!

Record location and details of local trees

Multiple locations, including yours!

Ongoing

Citizen ScienceNature & OutdoorsEcology & Environmentarboristurban foresttreesmappingneighbourhood

IQAir AirVisual

PM2.5 air pollution monitoring

Better understand air pollution and its sources, indoors and out

Anywhere

Ongoing

Citizen ScienceHealth & MedicinePolicyClimate & WeatherNature & OutdoorsCrowd FundingTransportationEducationventilationburn bancarbonindoordustair pollutantsdataairmonitoringenvironmentwood burningair qualityco2asthmaair pollutiontraffichighwayshealthemissionssmogcarspm2.5outdoor