Stack Health Score
Score = 30-day uptime − penaltiesLatency >500ms: −2 | >1000ms: −5
Outages this month: −2 each
Degradations this month: −1 each
Uptime · Latency · Incidents
ProbecastFreeKnow when your dependencies break. Before your users do.
Monitor Air Quality (AirNow) and 1,000+ APIs with Probecast and get alerted when something changes.
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98.32%
UptimePercentage of time the API was available.
Only DOWN status impacts this metric.
948ms
Avg Latency
1,000+
APIs monitored
7
Outages
9
Degradations
This Month
About Air Quality (AirNow)'s Air Quality (AirNow)
Air Quality (AirNow)'s Air Quality (AirNow) provides air quality index data and forecasts for US locations. AirNow is a US air quality reporting service run by the EPA and partner agencies. The Air Quality (AirNow) is used by developers worldwide for air quality data, AQI, pollution forecasts, public health.
Probecast monitors the Air Quality (AirNow) from 4 global regions (US West, US East, Europe, Asia Pacific) every 300 minutes, tracking uptime, latency and regional availability. Our real-time monitoring helps developers and teams understand the current health of Air Quality (AirNow)'s Air Quality (AirNow) and get alerted the moment service degrades.
Why monitor Air Quality (AirNow)?
If your product depends on Air Quality (AirNow) for critical features, an outage on Air Quality (AirNow)'s side is an outage on your product. Probecast detects Air Quality (AirNow) incidents as they start, giving you time to communicate with customers, fall back to alternative services or pause background jobs gracefully.
Current status
As of the latest check, Air Quality (AirNow) is operational. The 30-day uptime is 98.32%, with 16 incidents recorded this month. Average response latency across all regions is 948ms.
●Uptime History
Regional Status
US West
490ms
latency
US East
509ms
latency
Europe
939ms
latency
Asia Pacific
1.85s
latency
Latency (24h)
Air Quality (AirNow) is one of 1,000+ services Probecast watches for you
Checking a status page during an incident means your users already noticed. Probecast flips that: it tells you first — and shows what the outage costs.
Checked from 4 regions
US West & East, Europe and Asia — a regional outage never hides.
Alerted the moment it degrades
Slack, email, Teams or webhooks — the moment it happens.
Your whole stack, one screen
1,000+ catalog APIs plus your own endpoints, websites and cron jobs.
Your business view: traffic & revenue
Google Analytics, Probecast Pixel, Stripe, Polar, Lemon Squeezy & more — beside your uptime.
2-minute setup · no DevOps team needed
Frequently Asked Questions
Recent Incidents
API Information
Monitored Endpoint
https://www.airnowapi.org/observation/latLong/currentProvider
Category
United States
Health Check
GET request
Check Interval
Every 5 minutes