Current AQI at John Muir Wilderness is 23, rated Good. PM2.5 concentration 4.2 micrograms per cubic meter. 5 active fires within 75 miles.
Wilderness Area / CA
Open, but check conditions first. A fire is burning about 46 miles away. Easy outings are fine; save the big push for a clearer day.
Why: 5 fires within 50 mi
Wind from the WSW at 14 mph, 49°F — carrying smoke from the nearby fire toward you
PM2.5: 4.2 µg/m³ from the nearest monitor
Conditions change fast and this data can be delayed or estimated. Treat this as guidance, not a guarantee, and check official sources and agency and AirNow alerts before you go.
Clear air nearby
John Muir Wilderness isn't a clear pick right now. These are good to go and within reach:
5 named incidents within 75 miles
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About this data
AQI from EPA AirNow monitors, and where none is close, the nearest EPA-corrected PurpleAir community sensor (labeled as an estimate). Refreshed through the day. Managed by U.S. Forest Service. Wind from Open-Meteo. Fire data from NIFC WFIGS. Smoke analysis from NOAA HMS. Boundaries from USGS PAD-US 4.0. Where no sensor is anywhere near, we say so rather than guess.
Important
More Than Just Parks aggregates third-party data from EPA AirNow, NOAA, NASA FIRMS, and NIFC/WFIGS. Readings can be delayed, estimated, incomplete, or wrong, and conditions on the ground change quickly. This tool is for general information only and is not a substitute for official air quality alerts, fire and evacuation orders, land manager closures, or emergency services. Verify with the managing agency and local authorities before making any travel, health, or safety decision. We make no warranty as to accuracy and accept no liability for decisions made using this information. This is not a medical tool. If you have a health emergency, call 911 or your doctor. Terms of Service.