What is the air quality in St. Johns today?

The current Air Quality Index (AQI) in St. Johns is 26 (Good). PM2.5 concentration is 6.3 µg/m³.

What is the temperature in St. Johns right now?

The current temperature in St. Johns is 26.0°C (feels like 26.0°C). Humidity is 79.8% and wind speed is 24.5 km/h.

Is it safe to go outside in St. Johns?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in St. Johns, United States

Cloudy

26.0°C · 79.8% humidity

26.0°

Feels 26.0°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

18 5pm

26 8pm

23 11pm

24 2am

23 5am

23 8am

21 11am

21 2pm

Station readings

CAMS model adj -4

Air Quality Index Trend

25h · 2 stn

View full history →

St. Johns's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

79.8%

Humidity

24.5 km/h

Wind E

1014.9 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.3 µg/m³

PM10

20.55 µg/m³

050100150200300500

What is the weather forecast for St. Johns?

Temperature & Precipitation

PM2.5 Trend

25h · 2 stations

PM2.56.3 µg/m³ ✓ WHO

Good

PM1020.55 µg/m³

Good

UV INDEX0.7

Low

Station readings (2 stations within 25 km)

6.3

Median

6.45

Average

6.2

Low

6.7

High

PM2.5 µg/m³ · Model: 9.75 · Bias: +3.5

What is the 7-day forecast for St. Johns?

09-24

26.7° 23.3°

4.44 mm

09-25

25.8° 23.4°

1.13 mm

09-26

29.7° 22.0°

09-27

29.8° 22.0°

0.06 mm

09-28

29.8° 24.1°

0.88 mm

09-29

27.3° 22.4°

2.94 mm

09-30

35.4° 22.3°

9.19 mm

Both models agree Avg diff: 2.5°C

Where are air quality stations near St. Johns?

Mandarin Rd Site, Duval, Florida, USA

10.3 km PM2.5: 6.2 µg/m³

Pepsi Place (PP-PPL), Duval, Florida, USA

20.9 km PM2.5: 6.7 µg/m³

What cities are near St. Johns?

26 Fruit Cove 26 Fleming Island 27 Palm Valley 26 Lakeside 28 Ponte Vedra Beach 29 Jacksonville Beach 27 Oakleaf Plantation 29 Jacksonville 25 Palm Coast 28 St. Marys

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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 2026-09-24T00:11 UTC.