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- Napa County’s air quality index was as high as 168 in the valley (unhealthy) and in the mid 200s (very unhealthy) in the mountains to the west. Levels in the 151-200 range — indicate amounts of pollution can cause health problems for most people after 24 hours of exposure.
www.sonomanews.com › article › newsSmoke chokes Napa and Sonoma air quality: What to do to stay ...
Air Quality Impacts. In general, if you smell or see smoke, protect your health by following the measures listed below. Children, the elderly and those with respiratory conditions such as asthma, lung disease and heart disease are most at risk for harmful impacts and are considered sensitive groups. The most important protective action is to ...
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Apr 21, 2017 · Air Quality in Napa County. Ozone and fine particle pollution, or PM2.5, are the major regional air pollutants of concern in the San Francisco Bay Area. Ozone is primarily a problem in the summer, and fine particle pollution in the winter. In Napa County, ozone rarely exceeds health standards, but PM2.5 occasionally does reach unhealthy ...
Jun 18, 2024 · Air quality in Napa County was significantly worse for much of Tuesday than in Sonoma County, according to the monitoring site Purpleair.com. Napa County’s air quality index was as high as 168...
- How Is The Air Quality in Napa?
- Is Today A Spare The Air Day in Napa?
- Is There Smoke in Napa Valley?
- What Is Causing Air Pollution in Napa?
- Is Air Quality in Napa Getting Worse?
Napa, the seat of Napa County, is located in Northern California, approximately 48 miles north of San Francisco. Napa County is part of a wider region known as Wine Country, named after its globally recognized wine exports. Napa features a generally warm and temperate Mediterranean climate, with winters tending to be rainier than the summer months....
Spare the Air days occur when PM2.5 particle concentrations rise to unhealthy levels. This can happen in Napa County due to several interdependent factors: 1. Wildfires often cause a rapid rise in air pollution, which occurred in late summer 2020 when the Hennessey, Walbridge, and other wildfires triggered a Spare the Air alert.5 2. Winter months b...
There are two primary causes of smoke in Napa Valley and other parts of the Bay Area: 1. natural wildfires:Common during summer when daylight hours are long and temperatures soar 2. household woodburning:Common during winter when cold temperatures increase demand for fireplace heat Woodburning is relatively controlled, while wildfires are unpredict...
Unlike some regions in the southern Bay Area, Napa County only rarely sees ozone rise to unhealthy levels. When this does occur, it’s usually in the summertime when sunlight and heat can cause nitrogen oxides (NOx) and volatile organic compounds (VOCs) to react and form ozone. Since there is less vehicle traffic in Napa Valley than in much of the B...
Napa County’s relatively good rating for ground-level ozone shows that smog is not as prevalent in this region as in other parts of the Bay Area, and this has been the case for many years. The annual weighted average number of High Ozone Days decreased from 3.7 in 1997-1999 to 0.7 in 2000-2002 and has stayed at or near that 0.7 average for nearly e...
- 53%
- Clear sky
- 73.4°F
- 3 mp/h
Localized Air Quality Index and forecast for Napa, CA. Track air pollution now to help plan your day and make healthier lifestyle decisions.
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. Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
An index above 200 indicates air pollution with serious health effects on most people, not just seniors or those with respiratory issues, according to the regional district.
