Outdoor
Current values look suitable for ordinary outdoor activity for most people.
Why: Low AQI and low pollutant levels support this guidance.
Phoenix, Arizona, United States
Phoenix air quality today
Current values look suitable for ordinary outdoor activity for most people.
Data: Hourly Open-Meteo model estimateThe latest update is older than expected, so this page is showing an estimate for the current hour.Detailed metrics and guidance use the latest available detailed data.
Practical guidance
Running
Current values look suitable for an easy outdoor run.
Why: Low AQI and low pollutant levels support this guidance.
Ventilation
Current values support brief ventilation.
Why: Low AQI and low pollutant levels support brief ventilation.
Air quality and outdoor metrics
US AQI
Air Quality Index
36
Good
PM2.5
Fine particulate matter
7.3µg/m³
Low
PM10
Coarse particulate matter
7.6µg/m³
Low
NO₂
Nitrogen dioxide
11µg/m³
Low
O₃
Ozone
45µg/m³
Low
UV index
Sun exposure level
3
Moderate
Temperature
Air temperature
23°C
Comfortable
Feels like
Apparent temperature
24°C
Comfortable
Wind
Wind speed
10km/h
Light
Humidity
Relative humidity
69%
Comfortable
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Disclaimer
This information is a general estimate only and is not medical advice.
Location
Phoenix, United States
Coordinates: 33.4484, -112.0740 · America/Phoenix
Interpret AQI for outdoor activity
Calculic's European AQI calculator assesses the value using your population group and planned activity intensity.
Interpret AQI in CalculicThis page's European AQI value, city and timestamp are passed to the calculator through the link.
What affects air quality in Phoenix
Maricopa County identifies construction, vacant lots, dirt roads and tracked-out soil as dust sources, and says winter wood burning is a recurring PM2.5 source in greater Phoenix.
This is county and greater-Phoenix source context, not a statement that dust or wood smoke is affecting Phoenix now.
Local monitoring and context
Maricopa County's ambient monitoring network samples pollution in varied settings and uses representative sites because monitoring every location in and around Phoenix is not feasible.
County monitors are representative samples with differing objectives; no one site is treated as all of Phoenix or as this page's current-data source.
City air quality FAQ
How should I read the AQI for Phoenix?
US AQI condenses air quality into one value. On this page, it helps you quickly judge whether conditions look good, moderate or more polluted than usual.
Is the air quality good for going outside?
Check the outdoor and running cards first. They combine AQI, particles, ozone, weather and other factors that can affect outdoor comfort.
Should I ventilate right now?
The ventilation card considers AQI and pollutants such as particles, nitrogen dioxide and ozone. If values are elevated, a shorter opening or a later moment may be better.
Why can air quality change during the day?
Weather, emissions, ozone formation, particles and air flow can shift local conditions, so the next hours can differ from the current reading.
Sources and methodology
Current data
This page uses US AQI.
Current and hourly air-quality values are CAMS-based model estimates, not measurements from a local monitoring station. They may not reflect street-level conditions.
- Displayed state
- This hour's model estimate
- Data time
- 31 Oct 2026, 10:00 am
- Weather data
- Open-Meteo
- Air-quality model data
- Copernicus Atmosphere Monitoring Service (CAMS). Open-Meteo selects data suited to this location. Possible CAMS datasets: CAMS European air quality forecasts, ENSEMBLE data; CAMS global atmospheric composition forecasts.
- Licence
- CC BY 4.0
City Air Quality selects the active data package, combines weather and air-quality data, chooses the current or latest usable model value, and formats it for this page.
The latest update is older than expected, so this page is showing an estimate for the current hour.
Detailed metrics and guidance use the latest available detailed data.
Evergreen city statements
Each local statement is linked to a checked primary-authority source. A source check is editorial provenance and does not describe current-data freshness.
Local sources support the background claims below; they are not the source of the current data shown above unless explicitly stated otherwise.
Authoritative sources for local statements
Air Quality Outreach
Maricopa County Air Quality Department
- Scope
- Maricopa County
- Source checked
- 22 Aug 2026
The Causes section identifies regulated dust sources and recurring winter wood-burning PM2.5 context in greater Phoenix.
Applicability: County source education with a specific greater-Phoenix wood-burning statement; it does not report today's conditions.
Based on this source: Maricopa County identifies construction, vacant lots, dirt roads and tracked-out soil as dust sources, and says winter wood burning is a recurring PM2.5 source in greater Phoenix.
Monitoring Network
Maricopa County Air Quality Department
- Scope
- Maricopa County
- Source checked
- 22 Aug 2026
Explains the network's varied settings, monitoring objectives and representative-sample limitation.
Applicability: County network design overview; representative samples do not imply uniform conditions across Phoenix.
Based on this source: Maricopa County's ambient monitoring network samples pollution in varied settings and uses representative sites because monitoring every location in and around Phoenix is not feasible.