Severe Center
Central Iowa Warnings, Watches, And Advisories Air Quality Alert
Air Quality Alert
In effect:
Sunday, May 10 2026 8:45 AM MST – Monday, May 11 2026 9:00 PM MST
Issued by NWS Phoenix AZ
AIR QUALITY ALERT FOR HARMFUL LEVELS OF OZONE (SMOG) AIR POLLUTION
What:
The Imperial County APCD has extended an air quality alert
due to harmful levels of ozone pollution. Visit
https://www.aqmd.gov/alertinfo to check current and forecasted air
quality levels.
The Imperial County APCD has extended an air quality alert
due to harmful levels of ozone pollution. Visit
https://www.aqmd.gov/alertinfo to check current and forecasted air
quality levels.
Where:
the Imperial Valley. Levels of ozone pollution can vary by
time and location depending on emissions and air pollution transport.
the Imperial Valley. Levels of ozone pollution can vary by
time and location depending on emissions and air pollution transport.
When:
from 11:00 a.m. Sunday, May 10, 2026 through 9:00 p.m.
Monday, May 11, 2026. The highest ozone levels typically occur in
the afternoon and early-evening hours.
from 11:00 a.m. Sunday, May 10, 2026 through 9:00 p.m.
Monday, May 11, 2026. The highest ozone levels typically occur in
the afternoon and early-evening hours.
Impacts:
Ozone air pollution can cause serious health problems,
including trouble breathing, asthma attacks, and lung damage.
Everyone can be affected, but sensitive groups such as people with
lung disease, older adults, people who are pregnant, children, and
those who spend a lot of time outdoors are at greater risk.
Ozone air pollution can cause serious health problems,
including trouble breathing, asthma attacks, and lung damage.
Everyone can be affected, but sensitive groups such as people with
lung disease, older adults, people who are pregnant, children, and
those who spend a lot of time outdoors are at greater risk.
Instructions:
To protect your health, check air quality levels and act as needed:
* When Air Quality Index (AQI) levels are "Unhealthy for Sensitive
Groups" (orange), sensitive groups as specified above should limit
extended or intense outdoor activity.
* When AQI is "Unhealthy" (red), everyone may experience health impacts.
Sensitive groups should avoid extended time outdoors.
* When AQI is "Very Unhealthy" (purple), sensitive groups should avoid
all outdoor physical activity. Everyone else should avoid extended
or intense outdoor activity.
* When AQI is "Hazardous" (maroon), everyone should avoid all outdoor
physical activity.
* ADDITIONAL DETAILS...
To help keep indoor air clean when air quality is poor:
* Keep windows and doors closed
* Run your air conditioner and/or an air purifier
* Do not use whole house fans or swamp coolers that bring in outside
air if you have other methods to stay cool
* Avoid other sources of pollution such as fireplaces, candles, incense,
and grilling
To help minimize outdoor ozone air pollution levels:
* Limit the use of gasoline powered lawn and garden equipment until
evening hours
* Try to delay trips to the gas station and the use of household chemicals
until the evening
To protect your health, check air quality levels and act as needed:
* When Air Quality Index (AQI) levels are "Unhealthy for Sensitive
Groups" (orange), sensitive groups as specified above should limit
extended or intense outdoor activity.
* When AQI is "Unhealthy" (red), everyone may experience health impacts.
Sensitive groups should avoid extended time outdoors.
* When AQI is "Very Unhealthy" (purple), sensitive groups should avoid
all outdoor physical activity. Everyone else should avoid extended
or intense outdoor activity.
* When AQI is "Hazardous" (maroon), everyone should avoid all outdoor
physical activity.
* ADDITIONAL DETAILS...
To help keep indoor air clean when air quality is poor:
* Keep windows and doors closed
* Run your air conditioner and/or an air purifier
* Do not use whole house fans or swamp coolers that bring in outside
air if you have other methods to stay cool
* Avoid other sources of pollution such as fireplaces, candles, incense,
and grilling
To help minimize outdoor ozone air pollution levels:
* Limit the use of gasoline powered lawn and garden equipment until
evening hours
* Try to delay trips to the gas station and the use of household chemicals
until the evening
Areas Impacted:
Imperial Valley
Air Quality Alert
In effect:
Saturday, May 09 2026 10:01 AM MST – Sunday, May 10 2026 9:00 PM MST
Issued by NWS Phoenix AZ
AIR QUALITY ALERT FOR HARMFUL LEVELS OF OZONE (SMOG) AIR POLLUTION
What:
The Imperial County APCD has extended an air quality alert
due to harmful levels of ozone pollution.
Visit https://www.aqmd.gov/alertinfo to check current and forecasted
air quality levels.
The Imperial County APCD has extended an air quality alert
due to harmful levels of ozone pollution.
Visit https://www.aqmd.gov/alertinfo to check current and forecasted
air quality levels.
Where:
the Imperial Valley. Levels of ozone pollution can vary by
time and location depending on emissions and air pollution
transport.
the Imperial Valley. Levels of ozone pollution can vary by
time and location depending on emissions and air pollution
transport.
When:
from 11 a.m. Saturday, May 9, 2026 to 9:00 p.m. Sunday, May
10, 2026. The highest ozone levels typically occur in the afternoon
and early-evening hours.
from 11 a.m. Saturday, May 9, 2026 to 9:00 p.m. Sunday, May
10, 2026. The highest ozone levels typically occur in the afternoon
and early-evening hours.
Impacts:
Ozone air pollution can cause serious health problems,
including trouble breathing, asthma attacks, and lung damage.
Everyone can be affected, but sensitive groups such as people with
lung disease, older adults, people who are pregnant, children, and
those who spend a lot of time outdoors are at greater risk.
Ozone air pollution can cause serious health problems,
including trouble breathing, asthma attacks, and lung damage.
Everyone can be affected, but sensitive groups such as people with
lung disease, older adults, people who are pregnant, children, and
those who spend a lot of time outdoors are at greater risk.
Instructions:
To protect your health, check air quality levels and act as needed:
* When Air Quality Index (AQI) levels are "Unhealthy for
Sensitive Groups" (orange), sensitive groups as specified
above should limit extended or intense outdoor activity.
* When AQI is "Unhealthy" (red), everyone may experience health
impacts. Sensitive groups should avoid extended time outdoors.
* When AQI is "Very Unhealthy" (purple), sensitive groups should
avoid all outdoor physical activity. Everyone else should
avoid extended or intense outdoor activity.
* When AQI is "Hazardous" (maroon), everyone should avoid all
outdoor physical activity.
* ADDITIONAL DETAILS...
To help keep indoor air clean when air quality is poor:
* Keep windows and doors closed
* Run your air conditioner and/or an air purifier
* Do not use whole house fans or swamp coolers that bring in
outside air if you have other methods to stay cool
* Avoid other sources of pollution such as fireplaces, candles,
incense, and grilling
To help minimize outdoor ozone air pollution levels:
* Limit the use of gasoline powered lawn and garden equipment
until evening hours
* Try to delay trips to the gas station and the use of household
chemicals until the evening
To protect your health, check air quality levels and act as needed:
* When Air Quality Index (AQI) levels are "Unhealthy for
Sensitive Groups" (orange), sensitive groups as specified
above should limit extended or intense outdoor activity.
* When AQI is "Unhealthy" (red), everyone may experience health
impacts. Sensitive groups should avoid extended time outdoors.
* When AQI is "Very Unhealthy" (purple), sensitive groups should
avoid all outdoor physical activity. Everyone else should
avoid extended or intense outdoor activity.
* When AQI is "Hazardous" (maroon), everyone should avoid all
outdoor physical activity.
* ADDITIONAL DETAILS...
To help keep indoor air clean when air quality is poor:
* Keep windows and doors closed
* Run your air conditioner and/or an air purifier
* Do not use whole house fans or swamp coolers that bring in
outside air if you have other methods to stay cool
* Avoid other sources of pollution such as fireplaces, candles,
incense, and grilling
To help minimize outdoor ozone air pollution levels:
* Limit the use of gasoline powered lawn and garden equipment
until evening hours
* Try to delay trips to the gas station and the use of household
chemicals until the evening
Areas Impacted:
Imperial Valley
Air Quality Alert
In effect:
Friday, May 08 2026 9:20 AM MST – Sunday, May 10 2026 9:00 PM MST
Issued by NWS Phoenix AZ
OZONE HIGH POLLUTION ADVISORY FOR MARICOPA COUNTY INCLUDING THE PHOENIX METRO AREA THROUGH SUNDAY
AQAPSR
The Arizona Department of Environmental Quality (ADEQ) has issued an
Ozone High Pollution Advisory for the Phoenix Metro Area today through
Sunday.
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.
The Arizona Department of Environmental Quality (ADEQ) has issued an
Ozone High Pollution Advisory for the Phoenix Metro Area today through
Sunday.
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.
Areas Impacted:
Maricopa, AZ