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Boise air right now

GoodAQI 17

Boise’s five-day smoke forecast shows the current index and the clearest time ahead.

17
AQI now
3
PM2.5 · µg/m³
Look farther for cleaner air

Where are you?

Search covers Canada and the United States.

The better move within a 3-hour drive

Dates

Dates follow you into hotel searches. Live inventory is confirmed by the provider.

You may already have the cleanest nearby air.No meaningfully cleaner place has a verified road route within 3 hours. Widen the range or show worse air for context.

Every town is also available in the ranked list.
Boise Clean · PM2.5 0–5 Good · 5–9 Elevated · 9–15 Polluted · 15–35 Unhealthy · 35–55 Severe · 55+
Top pick
Nampa
Cel-shaded illustration of Nampa
AQI 22
#1NampaChecking road route

Idaho· Good

Idaho community with lodging and a separate live air reading for regional smoke comparisons.

Worse air than home. Don't bother.

PM2.5 is 4 µg/m³ here vs 3 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 4/22 × 7 = 1.3 here; 3/22 × 7 = 1.0 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
33% worse airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 5:00 p.m. EDT

PM2.5 from the Nampa Ridgecrest monitor.

Directions
Still smoky
Mountain Home
Cel-shaded illustration of Mountain Home
AQI 43
#2Mountain HomeChecking road route

Idaho· Good

Idaho community with lodging and a separate live air reading for regional smoke comparisons.

Worse air than home. Don't bother.

PM2.5 is 7.7 µg/m³ here vs 3 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 7.7/22 × 7 = 2.5 here; 3/22 × 7 = 1.0 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

Air is currently worse here than in Boise

157% worse airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:27 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Eagle
Cel-shaded illustration of Eagle
AQI unavailable
#3EagleChecking road route

Idaho

Idaho community with a separate live air reading for regional smoke comparisons.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
Meridian
Cel-shaded illustration of Meridian
AQI unavailable
#4MeridianChecking road route

Idaho

Idaho community with a separate live air reading for regional smoke comparisons.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
Kuna
Cel-shaded illustration of Kuna
AQI unavailable
#5KunaChecking road route

Idaho

Idaho community with a separate live air reading for regional smoke comparisons.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
Star
Cel-shaded illustration of Star
AQI unavailable
#6StarChecking road route

Idaho

Idaho community with a separate live air reading for regional smoke comparisons.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
Middleton
Cel-shaded illustration of Middleton
AQI unavailable
#7MiddletonChecking road route

Idaho

Idaho community with a cached air reading available when it appears in a nearby escape search.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
Emmett
Cel-shaded illustration of Emmett
AQI unavailable
#8EmmettChecking road route

Idaho

Idaho community with a separate live air reading for regional smoke comparisons.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
Caldwell
Cel-shaded illustration of Caldwell
AQI unavailable
#9CaldwellChecking road route

Idaho

Idaho community with a separate live air reading for regional smoke comparisons.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
Marsing
Cel-shaded illustration of Marsing
AQI unavailable
#10MarsingChecking road route

Idaho

Idaho community with a separate live air reading for regional smoke comparisons.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
Homedale
Cel-shaded illustration of Homedale
AQI unavailable
#11HomedaleChecking road route

Idaho

Idaho community with a separate live air reading for regional smoke comparisons.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
Parma
Cel-shaded illustration of Parma
AQI unavailable
#12ParmaChecking road route

Idaho

Idaho community with a separate live air reading for regional smoke comparisons.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
McCall
Cel-shaded illustration of McCall
AQI 18
#13McCall~2 h 35 min drive

Idaho· Good

Mountain town on Payette Lake near 5,000 feet in central Idaho, where alpine air and open water pair well, with lodges and cabins.

Worse air than home. Don't bother.

PM2.5 is 3.3 µg/m³ here vs 3 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 3.3/22 × 7 = 1.1 here; 3/22 × 7 = 1.0 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
10% worse airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 5:00 p.m. EDT

PM2.5 from the McCall monitor.

Directions
Still smoky
Hailey
Cel-shaded illustration of Hailey
AQI 52
#14HaileyChecking road route

Idaho· Moderate

Wood River Valley town south of Ketchum near 5,300 feet, with dry mountain-valley air.

Worse air than home. Don't bother.

PM2.5 is 9.5 µg/m³ here vs 3 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 9.5/22 × 7 = 3.0 here; 3/22 × 7 = 1.0 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

Air is currently worse here than in Boise

217% worse airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 5:00 p.m. EDT

PM2.5 from the Ketchum monitor.

Directions
Still smoky
Gooding
Cel-shaded illustration of Gooding
AQI unavailable
#15GoodingChecking road route

Idaho

Idaho community with a cached air reading available when it appears in a nearby escape search.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
Wendell
Cel-shaded illustration of Wendell
AQI unavailable
#16WendellChecking road route

Idaho

Idaho community with a cached air reading available when it appears in a nearby escape search.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
Still smoky
Bellevue
Cel-shaded illustration of Bellevue
AQI unavailable
#17BellevueChecking road route

Idaho

Idaho community with a cached air reading available when it appears in a nearby escape search.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town.

Directions
West Yellowstone
Cel-shaded illustration of West Yellowstone
AQI 0
#18West Yellowstone~6 h 35 min drive

Montana· Good

Park-gateway town near 6,700 feet at Yellowstone's west entrance, high and dry on the Continental Divide, with plentiful motels.

100% cleaner than home — pack the car.

PM2.5 is 0 µg/m³ here vs 3 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0/22 × 7 = 0 here; 3/22 × 7 = 1.0 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

3 µg/m³ less fine-particle pollution than Boise right now

100% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 5:00 p.m. EDT

PM2.5 from the Yellowstone- Old Faithful Snow Lodge monitor.

Directions
Still smoky
Pinedale
Cel-shaded illustration of Pinedale
AQI 3
#19PinedaleChecking road route

Wyoming· Good

Wind River Range gateway near 7,200 feet, a wilderness-trailhead base with cool high-country air.

About the same air — still smoky.

PM2.5 is 0.6 µg/m³ here vs 3 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.6/22 × 7 = 0.2 here; 3/22 × 7 = 1.0 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.4 µg/m³ less fine-particle pollution than Boise right now

80% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 4:00 p.m. EDT

PM2.5 from the Pinedale Gaseous monitor.

Directions
Still smoky
Portland
Cel-shaded illustration of Portland
AQI 8
#20PortlandChecking road route

Oregon· Good

A major Oregon city with broad lodging options and live air-quality readings for comparison when smoke shifts across the region.

About the same air — still smoky.

PM2.5 is 1.5 µg/m³ here vs 3 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 1.5/22 × 7 = 0.5 here; 3/22 × 7 = 1.0 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
50% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 5:00 p.m. EDT

PM2.5 from the Portland Benson High School monitor.

Directions
Bad week ahead? Check the 7-day outlook — if it won’t clear, book the trip

7-day outlook

Plan the next seven days

Pick a day, or compare the whole week. Weather is forecast; air quality is the latest available reading.

Loading the week…

Finding the nicest days and reachable cities.

Observed Aug 23, 5:00 p.m. EDTLast scan Aug 23, 6:27 p.m. EDT · 49 min ago

Why live rankings? Smoke plumes are patchy and shift with the wind, so no direction is reliably cleaner. This list is recalculated from live PM2.5 every hour — and if everything nearby is smoky, it says so.

How we work this out →

Browse all 200 cities by province & state →

Air quality in nearby cities →
Missoula air qualityBend air qualityOgden air qualitySpokane air qualityBozeman air qualityYakima air qualitySalt Lake City air qualityProvo air qualityReno air qualityEugene air qualityPortland air qualityMedford air quality

What this means · Boise

Good

AQI 17

AQI = Air Quality Index

Typical person. Air quality is satisfactory for most outdoor plans.

Kids, seniors, heart or lung conditions. Unusually sensitive people can still enjoy the outdoors.

The AQI on this page follows fine particles (PM2.5). Particles here are 3 µg/m³ (Clean), so the headline and the particle scale below tell the same story.

Act two · Fine particles only

Where PM2.5 lands

This bar is smoke and fine particles (PM2.5) only. Left is cleaner air; right is heavier particle pollution. Today's particles sit in Clean.

3 µg/m³
Clean · 0Smoky · 40Severe · 80+

Act three · Particle ladder

What each PM2.5 rung feels like

  • 0–3µg/m³Natural. About as clean as outdoor air realistically gets.
  • 3–5µg/m³Clean. Crisp, destination-worthy air.
  • 5–9µg/m³Good. Clean city air; most people will not notice anything today.
  • 9–15µg/m³Elevated. Usually no big deal today; sensitive lungs may notice hard exercise.
  • 15–35µg/m³Polluted. Smoke or traffic pollution is now worth acting on.
  • 35–55µg/m³Unhealthy. Symptoms become more likely, especially with asthma or heart disease.
  • 55+µg/m³Severe. Everyone should reduce exposure and clean the indoor air.

Act four · Felt number

Cigarettes a week

A secondary feel for the particle load only — not a medical claim, and not a substitute for AQI.

1.0/wk

What is PM2.5?

Fine particles about 30× thinner than a human hair — small enough to slip through your lungs and into your bloodstream. We measure them inµg/m³: micrograms of particle mass in a cubic metre of air.

The math

PM2.5 here is 3 µg/m³.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at this level: 3/22 × 7 = 1.0 cigarettes.A long-term health-risk equivalence, not literal smoking.See how we work it out →
See the full method →