When Can I Be Outside?

Hour-by-hour windows for outdoor time — heat and air quality read together on the NWS and EPA scales, framed for practices, runs and Parkway rides.

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Town Tools builds free, public tools for Bakersfield and towns around the world. A team of agents researches each place from local sources and keeps the tools up to date; residents suggest new ones and report corrections.

Today, Monday, October 12

Best windows today: all day.

Air in those windows is Moderate, not Good — acceptable for most people by the EPA’s scale, but anyone unusually sensitive to air pollution may want to take it easier.

As of October 12 at 4:50 AM. Modelled forecast for the area around central Bakersfield, refreshed about every half hour.

Day

Best windows

Peak feels-like

Peak air

Tuesday, October 13

all day

70°F

65 · Moderate

Wednesday, October 14

all day

76°F

55 · Moderate

How this page decides

Heat uses the National Weather Service’s heat-index categories, applied to the modelled feels-like temperature: Caution 80°F–90°F, Extreme Caution 90°F–103°F, Danger 103°F–124°F, Extreme Danger 125°F and up.

Air uses the US EPA air quality index: Good 0–50, Moderate 51–100, Unhealthy for Sensitive Groups 101–150, Unhealthy 151–200, Very Unhealthy 201–300, Hazardous above that. The number here is that same EPA index, computed by Open-Meteo from the Copernicus CAMS model.

Each hour takes the harder of the two constraints, and the strip says which one. A “best window” means hours where the feels-like temperature stays below 80°F (below the NWS Caution band) and the air is no worse than Moderate — the EPA’s general-population activity cautions start at 101. No thresholds on this page are ours.

Reading it for your plans

Kids' sports and school runs

Practice times don't move, but the windows do. In summer the morning hours are usually the easiest ones; by mid-afternoon the feels-like temperature is typically the binding constraint, with ozone building alongside it.

Runners and cyclists

Heat builds fast after sunrise — a run that starts an hour later can finish a band or two harder. Evenings shed heat slowly here, and the feels-like number often holds the Caution band well after sunset, which is why the answer is so often early morning rather than tonight.

Kern River Parkway rides

The most consistent complaint in Parkway trail reviews is limited shade. Out on the trail at midday, treat the area-wide number on this page as a floor, not a ceiling — and read the strip against the whole length of the ride, not just the start.

Worth knowing

Why families here plan around this

About 1 in 6 children in Kern County has an asthma diagnosis, and the county logged 2,845 emergency-department visits for asthma in 2023. "People don't want to go outside" is how one researcher who studies the region summed up bad-air days. Most days still have easier hours; this page exists to find them.

Source: Deseret News, November 2025, checked June 12, 2026

Why the worst heat and the worst air arrive together

Ground-level ozone isn't emitted directly — it forms when exhaust and other pollution react in sunlight, and the EPA notes it is most likely to reach unhealthy levels on hot sunny days. In a Bakersfield summer that means the hottest afternoons usually carry the day's harder air too, so the early-morning window tends to win twice. Winter flips the problem to fine particles under fog — Air Today covers that side.

Source: US EPA, ground-level ozone basics, checked June 12, 2026

The official channels

NWS Hanford forecast for BakersfieldThe official hour-by-hour forecast, including any heat advisories and extreme-heat warnings.

AirNow — BakersfieldThe official US AQI from local monitors — the number quoted on the news.

Valley Air District real-time air qualityThe district's own real-time picture of the San Joaquin Valley.

myRAAN (Real-time Air Advisory Network)Neighborhood-level advisories — the system local schools use for recess calls. Requires a free account.