Is it safe to go outside in Denver today?
Denver, CO’s air changes day to day. BreathCount checks the current air quality (AQI), pollen, and heat and turns it into one plain-language decision — instead of leaving you to interpret a raw number. Free, no account, no install.
What affects Denver’s air
Denver's Front Range regularly issues summer ozone alerts, and wildfire smoke and winter inversions add to the mix.
- Summer ozone (frequent Front Range Ozone Action Days)
- Wildfire smoke (PM2.5) in summer and fall
- Winter inversions that trap particles (the 'brown cloud')
Ozone is worst on hot, sunny afternoons from June through August; smoke can arrive any time in fire season.
From a number to a decision
Official sources give Denveran accurate AQI number. They don’t tell you whether to run this morning, send the kids to recess, or move practice indoors. BreathCount reads the current AQI, pollen, and heat together and gives you a plain-language answer for your situation — general, exercise, kids, or sensitive groups — plus a short note you can share.
Common questions
Is the air quality bad in Denver right now?
It changes hour to hour. Denver's Front Range regularly issues summer ozone alerts, and wildfire smoke and winter inversions add to the mix. Check Denver's current AQI, pollen, and heat for a plain-language read on whether to head out.
When is Denver's air most likely to be a problem?
Ozone is worst on hot, sunny afternoons from June through August; smoke can arrive any time in fire season.
What AQI is okay for outdoor exercise in Denver?
There's no single cutoff. As AQI rises, sensitive groups — kids, older adults, and people with asthma or heart conditions — may want to ease up first, and everyone may want to cut back on long, intense efforts on higher days. BreathCount turns the current number into activity-specific guidance. This isn't medical advice; always follow official alerts.
BreathCount does not declare conditions safe or unsafe and is not medical advice. Conditions can change quickly — always follow official alerts from AirNow (EPA) and local authorities.