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Fort Collins Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in Colorado

Last Updated: 2025-08-27 10:40:50 AM (Local Time)

location image
Live AQI
49(AQI-US)
Air Quality is
Good
pm10 :  17 µg/m³
PM2.5 :  9 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level.webp in Fort Collins
mist

17 °C

Mist
Humidity
Humidity96 %

Wind Speed
Wind Speed7 km/h

UV Index
UV Index1
Last Updated: 2025-08-27 10:40:50 AM (Local Time)


Map

Fort Collins

Major Air Pollutants

Fort Collins

AQI Graph

Historical Air Quality Data

Fort Collins

Fort Collins
AQI
.
26-08-2025Time27-08-2025
36
Min.at 12:09 AM on 27th Aug
56
Max.at 2:09 PM on 26th Aug

Download 2024 Annual Data

World Air Quality Report

Globe

AQI Trends - Annual Air Quality Changes

Fort Collins, Colorado, United States

Year
.
AQI


Annual AQI Trends

2020
39AQI
2021
35AQI
-10%
Fall
2022
28AQI
-20%
Fall
2023
26AQI
-7%
Fall
2024
27AQI
4%
Rise
2025
31AQI
15%
Rise
Overall Annual Percentage (%) change of AQI in (2020 to 2025)
-4%
Fall (Improved AQI)

Most & Least Polluted Months

Most PollutedSeptember, 202063AQI

Least PollutedMay, 202415AQI

* This data analysis is from year 2020 - 2025

Fort Collins's Locations

Real-time Air Pollution Level

Location
Status
AQI
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Moderate
53
10
18
20
56
Moderate
53
10
18
20
56
Moderate
54
11
18
20
56
Good
48
9
16
20
56
Good
39
7
13
21
59

United States's Metro Cities

Air Quality Index

Health Advice For People Living In

Fort Collins

0Cigarettes per day

Weekly 0 Cigarettes
Monthly 0 Cigarettes

Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI

  • Air Purifier
    Air PurifierTurn Off
  • Car Filter
    Car FilterAdvisable
  • N95 Mask
    N95 MaskAdvisable
  • Stay Indoor
    Stay IndoorAdvisable


As per the current AQI, turn off the air purifier.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Fort Collins

  • asthma due to air pollution in Fort CollinsAsthma
  • heart due to air pollution in Fort CollinsHeart Issues
  • allergy due to air pollution in Fort CollinsAllergies
  • sinus due to air pollution in Fort CollinsSinus
  • flu due to air pollution in Fort CollinsCold/Flu
  • copd due to air pollution in Fort CollinsChronic (COPD)
asthma due to air pollution in Fort Collins

Low Chances of Asthma

Asthma

Risk of Asthma symptoms is Low when AQI is Good (0-50)

Mild symptoms such as slight wheezing, occasional cough, and minor shortness of breath

Do's :

  • Keep track of air quality to plan outdoor activities safely.

  • Drink water to keep airways moist and reduce irritation.

  • Include non-allergenic fruits and vegetables that support overall lung health, like apples, pears, and spinach.

Don'ts :

  • Skip medications that is prescribed by your doctor.

  • Engage in outdoor activities in early morning during high pollen hours.

Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2025

United States

Analyze the real-time most air polluted cities in the country.

Fort Collins's AQI Data Analytics Solutions

Air quality data monitoring platforms

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aqi air quality app for Fort Collins
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Empower Your Decisions with Reliable Data

Your area’s real-time data with detailed parameters.

Your area’s real-time data with detailed parameters.


Personalized health advice as per current AQI.

Personalized health advice as per current AQI.


Analytical data to identify trends and conditions.

Analytical data to identify trends and conditions.


Connect and control your air quality devices.

Connect and control your air quality devices.


Air Quality FAQs

at Fort Collins

Frequently Asked Questions About Air Quality

What is the current AQI level in Fort Collins?

The current real-time AQI level in Fort Collins is 49 (Good). This was last updated 2025-08-27 10:40:50 AM (Local Time).

When was the best AQI level in Fort Collins in the last 24 hours?

The best AQI level was 36 (Good) at 12:09 AM (Local Time) during the last 24 hours.

When was the worst AQI level in Fort Collins in the last 24 hours?

The worst AQI level was 56 (Moderate) at 2:09 PM, Aug 26, 2025 (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Fort Collins during last 24 hours?

The AQI levels in Fort Collins have been fluctuating throughout the last 24 hours. The levels have increased by highest 56 at 2:09 PM, Aug 26, 2025 (Local Time), lowest 36 at 12:09 AM (Local Time).

What actions are recommended as per the current AQI level in Fort Collins?

The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.