Air Quality in San Luis Obispo, United States
Partly Cloudy
25.4°C · 66.9% humidity
25.4°
Feels 25.4°
13
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
San Luis Obispo's air quality — share it
AQI Forecast
83
7am
83
83
13
10am
33
47
57
1pm
65
70
74
4pm
76
61
63
7pm
81
81
82
10pm
82
82
83
1am
84
84
84
4am
84
83
Air Quality Index Trend
26h · 1 stnSan 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.
66.9%
Humidity
37.1 km/h
Wind SW
1016.1 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
3.1 µg/m³
PM10▲
48.05 µg/m³
050100150200300500
What is the weather forecast for San Luis Obispo?
Temperature & Precipitation
PM2.5 Trend
26h · 1 stationPM2.53.1 µg/m³
✓ WHO
Good
PM1048.05 µg/m³
Good
UV INDEX9.4
Very High
Station readings (1 station within 25 km)
3.1
Median
3.1
Average
3.1
Low
3.1
High
PM2.5 µg/m³ · Model: 20.3 · Bias: +17.2
What is the 7-day forecast for San Luis Obispo?
09-05
25.4° 15.5°
09-06
26.6° 15.1°
09-07
25.3° 14.3°
09-08
25.6° 13.2°
09-09
23.5° 15.9°
09-10
22.1° 13.1°
09-11
26.3° 16.2°
Both models agree
Avg diff: 5.2°C
Where are air quality stations near San Luis Obispo?
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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 2026-09-05T17:31 UTC.