Today | Weather | Friday, May 1, 2026

Active Weather Warnings

Air Quality Alert

Weather in Phoenix, Arizona

03:59 PM

Now

90° F

Feels Like 91°

Precipitation 0 %

Wind 8 mph

UV Index (0 - 11+) 3

Humidity 16 %

Today

Day 91°

Night 70°

Precipitation 0 %

Wind 6 mph

UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Phoenix Weather Forecast Updated

48 minutes ago

Last updated on May 01, 2026 at 3:11 PM

Weather Forecast History

Last Year's Weather on This Day (May 1, 2025)

Day

93°

Night

66°

Wind

6 mph

UV Index

Precipitation

0 %

Air Quality in Phoenix

NOW

77 AQI

Moderate air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 7.98 µg/m³

PM₁₀ 36.78 µg/m³

O₃ 0.063 ppm

NO₂ 0.1 ppb

SO₂ 0.1 ppb

CO 0.10 ppm

NH₃ 1.16 µg/m³

NO 0.04 µg/m³

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

NH₃ – Ammonia

NO – Nitric oxide

Health Recommendations:

Air quality is acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 7.98 µg/m³

PM₁₀ – 36.78 µg/m³

O₃ – 123.21 µg/m³

NO₂ – 0.24 µg/m³

SO₂ – 0.28 µg/m³

CO – 109.66 µg/m³

NH₃ – 1.16 µg/m³

NO – 0.04 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Phoenix

Air Quality Alert

Air Quality Alert issued May 1 at 9:28AM MST by NWS Phoenix AZ

May 1, 10:28 AM → May 2, 10:00 PM

AQAPSR

The Arizona Department of Environmental Quality (ADEQ) has issued an
Ozone High Pollution Advisory for the Phoenix Metro Area today and
Saturday.

This means that forecast weather conditions combined with existing
ozone levels are expected to result in local maximum 8-hour ozone
concentrations that pose a health risk. Adverse health effects
increase as air quality deteriorates.

Ozone is an air contaminant which can cause breathing difficulties
for children, older adults, as well as persons with respiratory
problems. A decrease in physical activity is recommended.

You are urged to car pool, telecommute or use mass transit.
The use of gasoline-powered equipment should be reduced or done late
in the day.

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

Updated: May 1, 4:11 PM Source: NWS Alert