Hourly Weather Forecast for Mesa, Arizona

Hourly Weather | Today › Tuesday, August 4, 2026

Active Weather Warnings

Extreme Heat Warning
Air Quality Alert

Mesa, Arizona

5 PM

108°

Feels Like 106°

Humidity: 20%

UV Index: 2

Wind: 8 mph

6 PM

108°

Feels Like 106°

Humidity: 20%

UV Index: 1

Wind: 9 mph

7 PM

108°

Feels Like 104°

Humidity: 20%

UV Index: 0

Wind: 10 mph

8 PM

104°

Feels Like 100°

Humidity: 21%

UV Index: 0

Wind: 13 mph

9 PM

100°

Feels Like 93°

Humidity: 26%

UV Index: 0

Wind: 10 mph

10 PM

99°

Feels Like 95°

Humidity: 28%

UV Index: 0

Wind: 9 mph

11 PM

95°

Feels Like 93°

Humidity: 31%

UV Index: 0

Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 PM

36 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.56 µg/m³
PM₁₀: 17.42 µg/m³
O₃: 0.039 ppm
NO₂: 0.1 ppb
SO₂: 0.1 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM

36 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.4 µg/m³
PM₁₀: 16.49 µg/m³
O₃: 0.039 ppm
NO₂: 0.1 ppb
SO₂: 0.1 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM

35 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.69 µg/m³
PM₁₀: 17.91 µg/m³
O₃: 0.038 ppm
NO₂: 0.2 ppb
SO₂: 0.1 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM

34 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 6.51 µg/m³
PM₁₀: 21.54 µg/m³
O₃: 0.037 ppm
NO₂: 0.3 ppb
SO₂: 0.1 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM

34 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 7.22 µg/m³
PM₁₀: 24.87 µg/m³
O₃: 0.036 ppm
NO₂: 0.3 ppb
SO₂: 0.1 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM

33 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 7.68 µg/m³
PM₁₀: 27.32 µg/m³
O₃: 0.036 ppm
NO₂: 0.3 ppb
SO₂: 0.1 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM

34 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 8.16 µg/m³
PM₁₀: 30.39 µg/m³
O₃: 0.035 ppm
NO₂: 0.3 ppb
SO₂: 0.1 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Mesa

Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued August 4 at 12:56PM MST until August 7 at 8:00PM MST by NWS Phoenix AZ

Aug 4, 1:56 PM → Aug 7, 9:00 PM

WHAT: Dangerously hot conditions. Afternoon temperatures 105 to
113 degrees. Major Heat Risk.

WHERE: The Phoenix metropolitan area.

WHEN: Until 8 PM MST Friday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.

ADDITIONAL DETAILS: In Maricopa County, Call 2-1-1 to find a free
cooling center, transportation, water and more.
https://www.maricopa.gov/heat

+ Read More

An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details.

Updated: Aug 4, 4:36 PM Source: NWS Alert

Air Quality Alert

Air Quality Alert issued August 4 at 10:03AM MST by NWS Phoenix AZ

Aug 4, 11:03 AM → Aug 4, 10:00 PM

AQAPSR

The Arizona Department of Environmental Quality (ADEQ) has issued a
PM-10 High Pollution Advisory for the Phoenix Metro Area on Tuesday.

An episode of strong and gusty winds is forecast to generate
widespread blowing dust that may result in local PM-10 concentrations
that pose a health risk. Adverse health effects increase as air
quality deteriorates.

Coarse particulate matter - also known as PM-10 - is an air
contaminant that can aggravate heart and lung disease conditions,
especially in older adults, children, and those with asthma. A
decrease in physical activity is recommended.

Consolidate your travel, stabilize loose soils, slow down or avoid
travel on dirt roads, reduce or eliminate fireplace use, and avoid
using gas-powered lawn equipment.

For details on this High Pollution Advisory, visit the ADEQ internet
site at www.azdeq.gov/forecast/phoenix or call 602-771-2300.

Updated: Aug 4, 4:36 PM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Mesa

Extreme Heat Warning

Air Quality Alert

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