Air Quality in San Luis Obispo, United States

Windy
20.5°C · 58.7% humidity
20.5°
Feels 20.5°
61
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Calibrated model

Nearby Monitoring Stations

AQI Forecast
54 5pm
54
54
61 8pm
59
58
57 11pm
56
55
55 2am
55
54
54 5am
54
54
54 8am
54
54
54 11am
54
54
54 2pm
54
54
AD 728×90

Air Quality Index Trend

24h · 1 stn

San Luis Obispo's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in San Luis Obispo is 1.1× the WHO 24-hour guideline of 15 µg/m³.

58.7%
Humidity
40.2 km/h
Wind W
1011.6 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
61
16.75 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

24h · 1 station
PM2.516.75 µg/m³ ×1.1 WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
08-03
20.5° 12.7°
0.06 mm
08-04
21.5° 16.6°
08-05
25.1° 13.6°
08-06
22.1° 12.7°
08-07
21.6° 13.5°
08-08
21.7° 13.8°
0.06 mm
08-09
23.1° 12.6°
0.06 mm
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T03:53 UTC.