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EPA AirNow vs RadarScope

EPA AirNow logo

EPA AirNow

Weather

Official U.S. government air quality information

From
Free
Rated
-
Full reviewWebsite
RadarScope logo

RadarScope

Weather

Professional-grade NEXRAD radar for storm chasers

From
$9.99/one-time
Rated
-
Full reviewWebsite

The short version

  • Only EPA AirNow has a free tier, so it costs nothing to try first.
  • Each has a real cost: EPA AirNow air quality data availability depends on nearby monitoring stations, can show no data found near a location when no monitor is close enough; RadarScope aggressive paywall restricts basic radar features behind $9.99-$109.99 annual subscriptions after initial purchase
  • They diverge on capability: EPA AirNow covers Official AQI data, RadarScope covers NEXRAD Level 2/3.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which EPA AirNow and RadarScope actually diverge.

Attributes where EPA AirNow and RadarScope differ
AttributeEPA AirNowRadarScope
Starting priceFree$9.99/one-time
Pricing modelfreeUnknown
Free tierYesNo
PlatformsiOS, Android, WebiOS, Android, Apple Watch, Apple TV
Founded19702010

Identical on both: user rating (Not yet rated), category (Weather).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in EPA AirNow

  • Official AQI data
  • Air quality forecasts
  • Fire & smoke data
  • Health recommendations
  • API access
  • Data feeds
  • Widgets
  • API

Only in RadarScope

  • NEXRAD Level 2/3
  • Super-resolution data
  • Dual-polarization
  • Storm tracking
  • Lightning data
  • GPS tracking
  • Apple Watch
  • TV apps

What people use each for

The jobs each tool is most often brought in to do.

EPA AirNow

  • Checking current Air Quality Index (AQI) for a location or any searched areanot RadarScope
  • Viewing next-day AQI forecasts to plan outdoor activitiesnot RadarScope
  • Monitoring wildfire smoke via the Fire and Smoke Map (built with the U.S. Forest Service)not RadarScope
  • Saving multiple locations for quick referencenot RadarScope
  • Receiving optional push notifications for local AQI forecastsnot RadarScope

RadarScope

  • Professional Worknot EPA AirNow
  • Content Creationnot EPA AirNow

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

EPA AirNow

  • Air quality data availability depends on nearby monitoring stations, can show no data found near a location when no monitor is close enough
  • Interactive monitor map (PM2.5, PM10, ozone) coverage documented on the primary source is U.S.-focused
  • As a government-run service it offers no paid tiers, proprietary data sources, or customization options found in commercial weather/air-quality apps

RadarScope

  • Aggressive paywall restricts basic radar features behind $9.99-$109.99 annual subscriptions after initial purchase
  • No CarPlay support, limiting usability while driving for storm chasers and weather professionals
  • App requires constant internet connectivity with no offline viewing capability
  • Missing road maps and some geographic areas do not display correctly

Pricing, plan by plan

EPA AirNow

Free

No published plan breakdown. See the EPA AirNow review.

RadarScope

$9.99/one-time
  • Base App$9.99/one-time
    • Full suite single-site radar products
    • 6-frame radar loops
    • Severe weather warnings
  • Pro Tier 1$9.99/year
    • 30-frame radar loops
    • Real-time lightning data
    • Cloud-to-ground detection
  • Pro Tier 2$109.99/year
    • 50-frame radar loops
    • Satellite imagery (GOES)
    • MRMS products

Which should you pick?

Choose EPA AirNow if

  • You need official aqi data.
  • You want to start without paying.
  • You work on iOS, Android, Web.
  • You also want air quality forecasts.
EPA AirNow review

Choose RadarScope if

  • You need nexrad level 2/3.
  • You work on iOS, Android, Apple Watch, Apple TV.
  • You also want super-resolution data.
RadarScope review

Questions people ask

Is EPA AirNow or RadarScope better?
Neither clearly leads. EPA AirNow starts at Free and RadarScope at $9.99/one-time, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, EPA AirNow or RadarScope?
EPA AirNow has a free tier; the other does not. Paid plans start at Free for EPA AirNow and $9.99/one-time for RadarScope.
Does EPA AirNow or RadarScope run on more platforms?
EPA AirNow runs on iOS, Android, Web. RadarScope runs on iOS, Android, Apple Watch, Apple TV.
Can I use EPA AirNow for free?
Yes. EPA AirNow has a free tier, so you can try it without paying. RadarScope starts at $9.99/one-time.
What is EPA AirNow best used for?
EPA AirNow is most often used for checking current air quality index (aqi) for a location or any searched area, viewing next-day aqi forecasts to plan outdoor activities, monitoring wildfire smoke via the fire and smoke map (built with the u.s. forest service), saving multiple locations for quick reference. Of those, checking current air quality index (aqi) for a location or any searched area and viewing next-day aqi forecasts to plan outdoor activities are not what RadarScope is typically brought in for.
What can EPA AirNow do that RadarScope cannot?
EPA AirNow covers Official AQI data, Air quality forecasts, Fire & smoke data, Health recommendations. RadarScope covers NEXRAD Level 2/3, Super-resolution data, Dual-polarization, Storm tracking.

Answered from the vendors’ own pages

EPA AirNow: Is AirNow.gov free to use?

Yes. AirNow.gov is a free service operated by the EPA and its partners that provides air quality data, forecasts, maps, and educational resources at no cost to users.

Source
RadarScope: What is the base price for RadarScope?

RadarScope costs $9.99 as a one-time purchase on iOS. This includes full suite radar products, 6-frame loops, severe weather warnings, and access to US, Canada, Guam, Denmark, Finland, and Germany.

Source
EPA AirNow: Are there any subscription costs or fees associated with AirNow.gov?

No. AirNow.gov offers all services, data access, and tools completely free. There are no subscription tiers, fees, or payment options of any kind.

Source
RadarScope: What subscription tiers does RadarScope offer?

RadarScope Pro Tier 1 costs $9.99 per year and includes 30-frame loops, real-time lightning, cloud-to-ground data, and dual pane display. Pro Tier 2 adds satellite imagery (GOES), MRMS products, forecast models (GFS, ECMWF, HRRR, NAM), and 30-year NEXRAD archive access.

Source
RadarScope: What platforms does RadarScope support?

RadarScope is available on iOS for iPhone and iPad. It supports Apple Watch and Apple TV widgets and complications. Android version is available via Google Play.

Source
RadarScope: Does RadarScope work offline?

No, RadarScope requires an active internet connection to download and display radar data. The app cannot function offline.

Source
RadarScope: What geographic coverage does RadarScope provide?

RadarScope covers the US, Canada, Guam, Denmark, Finland, and Germany with full suite single-site radar products. Pro Tier 2 provides 30-year NEXRAD archive access for historical analysis.

Source
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