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Current air quality index in Monroe, Washington today

Stay updated with real-time air quality in Monroe, Washington featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

25

Good

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Monroe, Washington

Last updated: ... (Local time)

Major air pollutants in Monroe, Washington

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter2.5 (PM2.5)

3.98 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

22.38 μg/m³

0

55

155

255

425

605+

Ozone (O3)

27.38 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

0.60 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

8.70 ppb

0

54

101

361

1250

2050+

Carbon Monoxide (CO)

0.14 ppm

0

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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Track live Monroe, Washington air quality forecast and history

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Real-time air quality map: Monitor AQI near Monroe, Washington




How accurate is Washington, USA air quality data?

The air quality data for Washington, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.


Frequently asked questions

How frequently does the air quality data for Monroe, Washington get updated?

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Air quality updates for Monroe, Washington are available every hour.


What time in the past 24 hours saw the poorest air quality in Monroe, Washington?

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Monroe, Washington experienced its worst air quality at 07:00:00, 2025-06-06.


When was air quality in Monroe, Washington the best over the past 24 hours?

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The best air quality in Monroe, Washington was observed at 03:00:00 on 2025-06-06.


What is the air quality in Monroe, Washington right now?

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The air quality in Monroe, Washington right now is Good, with an AQI of 25.


What pollutant is most frequently found in Monroe, Washington?

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In Monroe, Washington, O3 is the most frequently found pollutant.


What can I do if the air quality in Monroe, Washington is poor?

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When air quality in Monroe, Washington is compromised, staying indoors and wearing a mask can reduce health risks.


What is the PM2.5 concentration in Monroe, Washington right now?

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Monroe, Washington currently has a PM2.5 concentration of 3.983 μg/m3.


What is the current level of PM10 in Monroe, Washington?

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Monroe, Washington currently has a PM10 concentration of 22.381 μg/m3.


What is the current level of carbon monoxide (CO) in Monroe, Washington?

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The current carbon monoxide (CO) level in Monroe, Washington is 0.142 ppm.


What is the current level of sulfur dioxide (SO2) in Monroe, Washington?

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The current sulfur dioxide (SO2) concentration in Monroe, Washington is 0.6 ppb.


What is the current level of ozone (O3) in Monroe, Washington?

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Monroe, Washington currently has an ozone (O3) concentration of 27.383 ppm.


What is the current level of nitrogen dioxide (NO2) in Monroe, Washington?

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The current level of nitrogen dioxide (NO2) in Monroe, Washington is 8.704 ppb.


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