Readings on 18 Jul 2015

View reading for:

Region	24-hr Sulphur dioxide (µg/m³)	24-hr PM₁₀ (µg/m³)	1-hr Nitrogen dioxide (µg/m³)^a	8-hr Ozone (µg/m³)	8-hr Carbon monoxide (mg/m³)	24-hr PM_2.5 (µg/m³)
North	8(5)	32(32)	33(-)	23(10)	0.5(5)	12(48)
South	9(6)	26(26)	23(-)	23(10)	0.5(5)	12(50)
East	11(7)	20(20)	13(-)	28(12)	1(10)	12(51)
West	20(12)	28(28)	28(-)	26(11)	0.3(3)	15(54)
Central	7(4)	24(24)	34(-)	25(11)	1.4(14)	10(43)

1-hr PM_2.5 (µg/m³)^b Readings on 17 Jul 2015

View reading for:

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	10	8	12	12	14	9	15	11	10	13	15	14
South	13	13	11	16	14	15	13	11	11	10	17	4
East	14	15	19	15	11	15	14	14	10	12	13	17
West	17	29	20	15	18	13	13	15	20	14	16	13
Central	8	15	9	14	9	11	11	6	11	8	5	11
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	19	9	6	17	9	11	9	9	16	10	10	10
South	1	3	3	12	21	7	6	14	17	20	19	15
East	8	8	11	16	11	14	7	7	7	13	11	14
West	21	9	11	12	20	21	2	3	9	15	21	17
Central	12	5	9	20	5	16	6	15	9	10	9	15

Note:
^a Sub-index for nitrogen dioxide is reported only when the 1-hour concentration exceeds 1130 µg/m³.
^b There is no sub-index for 1-h PM_2.5.

3-hr PSI Readings from 1am to 12am on 17 Jul 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	53	54	53	54	53	52	52	51	51	49	51	51
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	51	43	38	42	51	53	45	40	38	48	52	53

The real-time data is automatically published as soon as it is generated by our air monitoring stations. The data is subject to verification and correction subsequently if necessary.

Contact Us

Hotline	1800 CALL NEA (1800-225 5632)
Weather	6542 7788
Fax	6235 2611
Feedback

Our Location

Main Office
Customer Service Centre
Other Offices

National Environment Agency
40 Scotts Road, #13-00
Environment Building
Singapore 228231

Customer Service Centre
40 Scotts Road #02-00
Environment Building
Singapore 228231
Customer Service Centre (Hawkers)
HDB Hub, East Wing, #26-01
480 Lorong 6 Toa Payoh
Singapore 310480