AQI PM2.5 PM10 CO SO2 NO2 O3

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Saint John Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-06-08 08:40:59 PM (Local Time)

Live AQI

Air Quality is

Moderate

pm10 : 17 µg/m³

PM2.5 : 11 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

21 °C

Last Updated: 2025-06-08 08:40:59 PM (Local Time)

Map

Saint John

Major Air Pollutants
Saint John

Particulate Matter(PM2.5)

11µg/m³

Particulate Matter(PM10)

17µg/m³

Carbon Monoxide(CO)

165ppb

Sulfur Dioxide(SO2)

0ppb

Nitrogen Dioxide(NO2)

2ppb

Ozone(O3)

27ppb

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AQI Graph

Historical Air Quality Data
Saint John

24 Hours

AQI

Saint John

Want air quality data?

AQI Trends - Annual Air Quality Changes
Saint John, New Brunswick, Canada

AQI

Year

AQI

Annual AQI Trends

2020

24AQI

2021

28AQI

17%

Rise

2022

29AQI

Rise

2023

30AQI

Rise

2024

26AQI

-13%

Fall

2025

23AQI

-12%

Fall

Overall Annual Percentage (%) change of AQI in (2020 to 2025)

No Change

Most & Least Polluted Months

Most PollutedFebruary, 202234AQI

Least PollutedApril, 202516AQI

* This data analysis is from year 2020 - 2025

Saint John's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

Castle Street

Moderate

Castle Street

Moderate

Forest Hills

Moderate

Lancaster Avenue

Moderate

Mountain Road

Moderate

Sipayik Me

Moderate

West Side

Moderate

Canada's Metro Cities
Air Quality Index

Calgary

Edmonton

Halifax

Montreal

Ottawa

Toronto

West Vancouver

Windsor

113

temp.23°C

hum.64%

Air Quality Calendar 2025
Saint John

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 26	2 Jan 22	3 Jan 26	4 Jan 23
5 Jan 23	6 Jan 24	7 Jan 22	8 Jan 22	9 Jan 26	10 Jan 25	11 Jan 23
12 Jan 24	13 Jan 29	14 Jan 32	15 Jan 24	16 Jan 25	17 Jan 37	18 Jan 33
19 Jan 24	20 Jan 23	21 Jan 26	22 Jan 28	23 Jan 36	24 Jan 31	25 Jan 26
26 Jan 31	27 Jan 25	28 Jan 28	29 Jan 25	30 Jan 28	31 Jan 27	1 Feb 26

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 31	27 Jan 25	28 Jan 28	29 Jan 25	30 Jan 28	31 Jan 27	1 Feb 26
2 Feb 25	3 Feb 26	4 Feb 23	5 Feb 26	6 Feb 29	7 Feb 24	8 Feb 26
9 Feb 26	10 Feb 30	11 Feb 30	12 Feb 27	13 Feb 25	14 Feb 26	15 Feb 27
16 Feb 26	17 Feb 26	18 Feb 23	19 Feb 22	20 Feb 22	21 Feb 26	22 Feb 28
23 Feb 29	24 Feb 35	25 Feb 45	26 Feb 31	27 Feb 29	28 Feb 31	1 Mar 32

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 29	24 Feb 35	25 Feb 45	26 Feb 31	27 Feb 29	28 Feb 31	1 Mar 32
2 Mar 29	3 Mar 28	4 Mar 35	5 Mar 45	6 Mar 28	7 Mar 24	8 Mar 29
9 Mar 28	10 Mar 28	11 Mar 27	12 Mar 30	13 Mar 23	14 Mar 22	15 Mar 23
16 Mar 19	17 Mar 28	18 Mar 16	19 Mar 23	20 Mar 18	21 Mar 14	22 Mar 20
23 Mar 30	24 Mar 18	25 Mar 19	26 Mar 27	27 Mar 21	28 Mar 19	29 Mar 16
30 Mar 18	31 Mar 17	1 Apr 22	2 Apr 22	3 Apr 19	4 Apr 21	5 Apr 15

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 18	31 Mar 17	1 Apr 22	2 Apr 22	3 Apr 19	4 Apr 21	5 Apr 15
6 Apr 16	7 Apr 17	8 Apr 18	9 Apr 16	10 Apr 16	11 Apr 11	12 Apr 12
13 Apr 10	14 Apr 11	15 Apr 10	16 Apr 10	17 Apr 11	18 Apr 11	19 Apr 13
20 Apr 13	21 Apr 13	22 Apr 16	23 Apr 14	24 Apr 15	25 Apr 18	26 Apr 20
27 Apr 15	28 Apr 15	29 Apr 25	30 Apr 26	1 May 16	2 May 21	3 May 22

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 15	28 Apr 15	29 Apr 25	30 Apr 26	1 May 16	2 May 21	3 May 22
4 May 24	5 May 17	6 May 18	7 May 16	8 May 19	9 May 15	10 May 14
11 May 16	12 May 17	13 May 20	14 May 21	15 May 27	16 May 27	17 May 23
18 May 16	19 May 15	20 May 12	21 May 15	22 May 18	23 May 16	24 May 14
25 May 13	26 May 15	27 May 22	28 May 28	29 May 30	30 May 23	31 May 19

June

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
1 Jun 27	2 Jun 28	3 Jun 27	4 Jun 35	5 Jun 37	6 Jun 46	7 Jun -
8 Jun -	9 Jun -	10 Jun -	11 Jun -	12 Jun -	13 Jun -	14 Jun -
15 Jun -	16 Jun -	17 Jun -	18 Jun -	19 Jun -	20 Jun -	21 Jun -
22 Jun -	23 Jun -	24 Jun -	25 Jun -	26 Jun -	27 Jun -	28 Jun -
29 Jun -	30 Jun -	1 Jul -	2 Jul -	3 Jul -	4 Jul -	5 Jul -

Health Advice For People Living In
Saint John

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

Solutions for Current AQI

Air PurifierTurn On
Car FilterMust
N95 MaskMust
Stay IndoorMust

Must turn on the air purifier to enjoy fresh air.

Prevent Health Problems: Understand Your Risks

Saint John

Asthma
Heart Issues
Allergies
Sinus
Cold/Flu
Chronic (COPD)

Mid. Chances of Asthma

Asthma

Risk of Asthma symptoms is Mid. when AQI is Moderate (50-150)

Moderate symptoms including frequent wheezing, noticeable shortness of breath, chest tightness, and persistent cough.

Do's :

Limit outdoor activities when AQI is poor.
Clean indoor air with an air purifier to reduce exposure.
Soothe the respiratory tract with herbal teas or warm water to help alleviate symptoms.

Don'ts :

Exercise outdoors without a mask.
Stay in smoky areas with strong fumes.

Most Polluted Cities 2025
Canada

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

Most Polluted Cities Live Ranking 2025

World's Most PollutedCity Rankings (2024)

World's Most PollutedCountry Rankings(2024)

RankCityAQIAQI Status

Standard Value

Windsor, Canada

Sarnia, Canada

Chatham, Canada

Bluewater, Canada

Grand Bend, Canada

Central Elgin, Canada

London, Canada

Newmarket, Canada

St Thomas, Canada

10.

Brantford, Canada

Moderate

5xabove Standard

Last Updated: 09 Jun 2025, 12:14 AM

AQI City Rankings

Air Quality Solutions For Saint John
Explore the solutions of air quality monitoring & clean air.

Here are some applications that you can go through to find out the solutions.

Air Quality Monitor

Monitor the air quality

Air Quality Sensors

Sensors to measure the air quality

Fresh Air Machine

Clean the air you breathe

Car Cabin Filter

Purify the air in your car

N95 Mask

Shield yourself from pollution

air quality solutions for offices for Saint John

Air Quality Solution For Offices

A complete solution for air quality monitoring, data analysis, and fresh air solutions in workplaces prioritizing employee's health and productivity.

Air Quality Solutions For Smart City

Prana Air smart city project provides air quality monitors, drones, outdoor air purifiers, and data dashboards solution to improve air quality.

air quality solutions for institutes for Saint John

Air Quality Solutions for Schools | Institutes

Prana Air provides the air quality solutions for schools by air monitoring & fresh air machine that help the students to breather clean air.

Air Quality Solutions For Hotels

Prana Air air quality solutions are suited for hotel businesses. The occupancy of hotels is the main reasons for bad air quality.

Air Quality Solutions for Restaurants

Prana Air has the air quality solutions for restaurant, cafes, and gives you the power to know what your customers and staff breathe.

Air Quality Solutions for RMC Plants

Prana Air provides air quality monitoring solutions for RMC plants. Improve compliance, protect workers and community, and reduce emissions.

Air Quality Solutions for Fitness Center

Prana Air provides the air quality solutions of pollution monitoring and fresh air for fitness center - gym.

Air Quality Solutions for Parking Lot

A complete solution for air monitoring, data analysis, and fresh air solutions for enclosed car parking areas and car lots.

Air Quality Solutions for Retail Stores

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets.

air quality solutions for airport for Saint John

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets

Prana Air provides the air quality solutions for airport. Gathering of many passengers is the main reasons of bad air quality in airport.

Air Quality Solutions For Construction Sites

Prana Air offers air quality monitoring solutions for construction sites with data cloud storage, web-dashboard, mobile apps, TV display.

Air Quality Solutions For Hospitals

Prana Air provides air quality monitoring and fresh air solutions for hospitals to ensure clean and healthy indoor air.

air quality solutions for bathroom for Saint John

Air Quality Solutions For Washroom | Bathroom

Improve washroom and bathroom air quality with Prana Air air quality monitoring devices and fresh air machine. Breathe easy and stay healthy.

Air Quality Solutions for Banks

Prana Air provides air quality solutions of pollution monitoring and fresh air for banks and financial institutions.

Air Quality Solutions for Cinema

Air quality solutions for cinema halls or theatres will help the customers to get the good experience, comfort and breathe clean air.

Air Quality Solutions For Real Estates

Prana Air provides the air quality solutions of pollution monitoring and fresh air for real estates - residential and commercial.

Saint John's AQI Data Analytics Solutions
Air quality data monitoring platforms

Mobile App

Smart TV App

Web Dashboard

API

Widgets

Mobile App

Empower Your Decisions with Reliable Data

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

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Air Quality FAQs
at Saint John

Frequently Asked Questions About Air Quality

What is the current AQI level in Saint John?

The current real-time AQI level in Saint John is 54 (Moderate). This was last updated 2025-06-08 08:40:59 PM (Local Time).

When was the best AQI level in Saint John in the last 24 hours?

The best AQI level was 21 (Good) at 11:11 PM, Jun 7, 2025 (Local Time) during the last 24 hours.

When was the worst AQI level in Saint John in the last 24 hours?

The worst AQI level was 60 (Moderate) at 8:11 AM, Jun 8, 2025 (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Saint John during last 24 hours?

The AQI levels in Saint John have been fluctuating throughout the last 24 hours. The levels have increased by highest 60 at 8:11 AM, Jun 8, 2025 (Local Time), lowest 21 at 11:11 PM, Jun 7, 2025 (Local Time).

What actions are recommended as per the current AQI level in Saint John?

Current AQI levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.