air quality index

within 25 miles

Oct 4, 2025

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Kids Friendly Only

21+ Only

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100

Participant Age Range Maximum

100

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Any Cost Free Only

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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 Marineappusadataautumncommunity-based monitoringcarbon dioxidesummerexperimentsmartphone applicationmobile applicationenvironmenthikingnaturebicyclingequityandroidclimateglobal warmingec2020air quality indexwinterstemair pollutionclimate changeiphoneparticulate matterair pollution monitoringair qualityoutdoorsinvestigationweather datacarbon monoxidespringgirl scoutsenvironmental justicedatabasescienceaircitizen scienceweatherclimate monitoring

Astronomers of Humboldt

Regular Monthly Observing at Kneeland Airport

Kneeland Airport CA

October 19, 2025 at 2:30 AM through 2:30 AM

CommunityAstronomy & Space

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