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What is the Air Quality Index (AQI)?
The Air Quality Index (AQI) is a national uniform system to report air pollution levels and provide citizens with information about the general health effects associated with different pollution levels. The AQI converts the highest measured pollutant concentration in a community’s air to a number on a scale of 0 to 500. The data is updated hourly and reported here.
The intervals and terms describing the AQI are as follows:
| AQI Category |
Health - Cautionary Statement |
| From 0 to 50...Good/Green |
none |
| From 51 to 100...Moderate/Yellow |
Unusually sensitive people should consider reducing prolonged and heavy exertion
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From 101 to 150...Unhealthy for Sensitive Groups/Orange
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People with heart or lung disease, older adults, and children should reduce prolonged or heavy exertion. |
From 151 to 200...Unhealthy/Red
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People with heart or lung disease, older adults, and children should avoid prolonged or heavy exertion. Everyone else should reduce prolonged or heavy exertion. |
From 201 to 300...Very Unhealthy
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People with heart or lung disease, older adults, and children should avoid all physical activity outdoors. Everyone else should avoid prolonged or heavy exertion. |
| Above 300...Hazardous |
People with heart or lung disease, older adults, and children should remain indoors and keep activity levels low. Everyone else should avoid all physical activity outdoors. |
| AQI for Spokane, days in each category |
2012 |
2011 |
2010 |
2009 |
2008 |
| Good/Green |
314 |
318 |
323 |
324 |
309 |
| Moderate/Yellow |
49 |
47 |
39 |
39 |
56 |
| Unhealthy for Sensitive Groups/Orange |
3 |
0 |
3 |
2 |
1 |
| Unhealthy/Red |
0 |
0 |
0 |
0 |
0 |
Email Notifications of Daily Air Quality Throughout the year, the Spokane Clean Air monitors daily air quality and reports pollution levels via its website and email. You can get emails at home of daily air quality, wood burning bans, etc. You select which list you want to subscribe to, for free! Click here.
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