The Metropolitan Washington Council of Governments (COG) has forecast a Code Orange air day for the metropolitan Washington region tomorrow: Tuesday, July 18. Smoke coming from wildfires in Canada will contribute to the increased levels of fine particle pollution. The Code Orange levels mean the air is unhealthy for sensitive groups, including older adults, children, and people with heart or lung disease.

Residents can check current air quality conditions on COG’s website or the Clean Air Partners website.


The Metropolitan Washington Council of Governments (COG) has forecast Code Orange air quality for sensitive groups for the metropolitan Washington region tomorrow, Wednesday, July 12, due to ground-level ozone pollution (not Canada wildfire smoke).  The Code Orange levels mean the air is unhealthy for sensitive groups, including older adults, children, and people with heart or lung disease. COG advises the following health precautions:

Residents can check current air quality conditions on COG’s website or the Clean Air Partners website. On unhealthy air days, COG advises the following actions to improve the air:


The Metropolitan Washington Council of Governments (COG) has forecast Code Orange air quality for the metropolitan Washington region tomorrow: Tuesday, July 4 through Thursday, July 6. On Tuesday, Fourth of July fireworks are expected to contribute to increased levels of fine particle pollution. On Wednesday and Thursday, a different pollutant, ground-level ozone, is expected to cause the unhealthy air quality. The Code Orange levels mean the air is unhealthy for sensitive groups, including older adults, children, and people with heart or lung disease. COG advises the following health precautions:

Residents can check current air quality conditions on COG’s website or the Clean Air Partners website. On unhealthy air days, COG advises the following actions to improve the air:


A Severe Thunderstorm Watch is in effect until 10pm for all locations along & east of I-81 (including all of Montgomery County). According to the National Weather Service this afternoon, “Wind & hail are the primary threats along with an isolated tornado. Mariners on the bay & tidal Potomac beware as these storms push east over the next 2-4 hours.”

Earlier today the National Weather Service stated, “Numerous showers and thunderstorms today, with some becoming severe, mainly along and east of the Blue Ridge. Damaging winds and large hail are possible with storms today and an isolated tornado can’t be ruled out.”


The Metropolitan Washington Council of Governments (COG) has forecast a Code Red air day for the metropolitan Washington region on Thursday, June 29. Code Red levels mean the air is unhealthy for everyone. Smoke coming from wildfires in Canada is contributing to the increased levels of fine particle pollution. COG advises the following health precautions:

Residents can check current air quality conditions on COG’s website or the Clean Air Partners website. The U.S Environmental Protection Agency also recommends the following during wildfire events:


The Metropolitan Washington Council of Governments (COG) has forecast a Code Orange air day for the metropolitan Washington region today: Wednesday, June 28. Smoke coming from wildfires in Canada will contribute to the increased levels of fine particle pollution.

The Code Orange levels mean the air is unhealthy for sensitive groups, including older adults, children, and people with heart or lung disease. On unhealthy air days, COG advises the following health precautions:


According to the National Weather Service (NWS), there is increased confidence in severe thunderstorms with large hail and damaging winds on Monday afternoon. Latest update from the National Weather Service Storm Prediction Center (NWSSPC) has brought an Enhanced Risk for severe storms along/east of the I-95 corridor. Per the NWS, we “have multiple ways to get warnings tomorrow.”

The Capital Weather Gang tweeted that there is an “ENHANCED (level 3 out of 5) risk of severe storms in DC area Monday afternoon-evening — not too common. Damaging winds, large hail and a tornado or two cannot be ruled out. Stay weather aware Monday…”


The Maryland Department of the Environment has issued a Code ORANGE Air Quality Alert on Monday, June 19th for the Maryland suburban DC region, which includes all of Montgomery County. Additional information below per the Maryland Department of the Environment:

Unhealthy for Sensitive Groups (USG) ozone concentrations remain possible Monday, compounded by persistent, though diffuse, wildfire smoke. Winds turn from the south on Monday. This will cause a recirculation of the regional airmass bringing pollution from Sunday back northward. Despite the anticipated lower emissions due to the state holiday Monday, ozone development leading to potential USG conditions for a wider area along and north of I-95 from DC to Baltimore remains possible outside of thunderstorms. As flow turns towards the east on Tuesday into Wednesday and increased chances for rain develop, air quality improves, with generally categorical Good AQI air quality expected. For current air quality conditions please check this website.


The Maryland Department of the Environment has issued a Code ORANGE Air Quality Alert Sunday for the Maryland suburban DC region, which includes central and SE portions of Montgomery County (Gaithersburg, Rockville, Bethesda, Potomac, Silver Spring, etc.).

A Code Orange Air Quality Alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Sensitive groups include children, people suffering from asthma, heart disease or other lung diseases and the elderly. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. Additional info below.


Per MCPS: All MCPS schools and offices are open on time. Before and After school childcare programs and Community Use occur as scheduled.

From 7pm, Wednesday, June 7th: Due to unhealthy air conditions as a result of wildfires in Canada, all outdoor recess will be canceled for Thursday, June 8. Athletics will operate under guidelines similar to heat index warnings, which include primarily indoor activities and increased monitoring of athletes. Field trips may need to be rescheduled or modified depending on the location and extent of outdoor activity. Adjustments could be made to outdoor graduations and will be communicated by individual schools. Any modifications to this guidance will be communicated as conditions continue to be monitored.


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